Bump version to 4.74.2

Fixes #10083

.github/workflows/android.yml

@@ -6,6 +6,7 @@ on:
     branches:
     - 'master'
     - '4.**'
+    - '5.**'
 
 jobs:
   build:

.github/workflows/docker.yml

@@ -0,0 +1,18 @@
+name: Reproducible Build Check
+
+on:
+  schedule:
+    - cron: '0 5 * * *'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build image
+      run: cd reproducible-builds && docker build -t signal-android . && cd ..
+
+    - name: Test build
+      run: docker run --rm -v $(pwd):/project -w /project signal-android ./gradlew clean assembleRelease

.gitignore

@@ -23,5 +23,5 @@ ffpr
 test/androidTestEspresso/res/values/arrays.xml
 obj/
 jni/libspeex/.deps/
-*.sh
 pkcs11.password
+dev.keystore

Dockerfile

@@ -1,25 +0,0 @@
-FROM ubuntu:17.10
-
-RUN dpkg --add-architecture i386 && \
-    apt-get update -y && \
-    apt-get install -y software-properties-common && \
-    apt-get update -y && \
-    apt-get install -y libc6:i386=2.26-0ubuntu2.1 libncurses5:i386=6.0+20160625-1ubuntu1 libstdc++6:i386=7.2.0-8ubuntu3.2 lib32z1=1:1.2.11.dfsg-0ubuntu2 wget openjdk-8-jdk=8u171-b11-0ubuntu0.17.10.1 git unzip opensc pcscd && \
-    rm -rf /var/lib/apt/lists/* && \
-    apt-get autoremove -y && \
-    apt-get clean
-
-ENV ANDROID_SDK_FILENAME android-sdk_r24.4.1-linux.tgz
-ENV ANDROID_SDK_URL https://dl.google.com/android/${ANDROID_SDK_FILENAME}
-ENV ANDROID_API_LEVELS android-28
-ENV ANDROID_BUILD_TOOLS_VERSION 28.0.3
-ENV ANDROID_HOME /usr/local/android-sdk-linux
-ENV PATH ${PATH}:${ANDROID_HOME}/tools:${ANDROID_HOME}/platform-tools
-RUN cd /usr/local/ && \
-    wget -q ${ANDROID_SDK_URL} && \
-    tar -xzf ${ANDROID_SDK_FILENAME} && \
-    rm ${ANDROID_SDK_FILENAME} 
-RUN echo y | android update sdk --no-ui -a --filter ${ANDROID_API_LEVELS}
-RUN echo y | android update sdk --no-ui -a --filter extra-android-m2repository,extra-android-support,extra-google-google_play_services,extra-google-m2repository
-RUN echo y | android update sdk --no-ui -a --filter tools,platform-tools,build-tools-${ANDROID_BUILD_TOOLS_VERSION}
-RUN rm -rf ${ANDROID_HOME}/tools && unzip ${ANDROID_HOME}/temp/*.zip -d ${ANDROID_HOME}

app/build.gradle

@@ -80,8 +80,8 @@ protobuf {
     }
 }
 
-def canonicalVersionCode = 705
-def canonicalVersionName = "4.71.2"
+def canonicalVersionCode = 723
+def canonicalVersionName = "4.74.2"
 
 def postFixSize = 10
 def abiPostFix = ['universal'   : 0,
@@ -92,20 +92,29 @@ def abiPostFix = ['universal'   : 0,
 
 android {
     flavorDimensions "none"
-    compileSdkVersion 28
-    buildToolsVersion '28.0.3'
+    compileSdkVersion 29
+    buildToolsVersion '29.0.3'
     useLibrary 'org.apache.http.legacy'
 
     dexOptions {
         javaMaxHeapSize "4g"
     }
 
+    signingConfigs {
+        staging {
+            storeFile file("${project.rootDir}/dev.keystore")
+            storePassword 'android'
+            keyAlias 'staging'
+            keyPassword 'android'
+        }
+    }
+
     defaultConfig {
         versionCode canonicalVersionCode * postFixSize
         versionName canonicalVersionName
 
         minSdkVersion 19
-        targetSdkVersion 28
+        targetSdkVersion 29
         multiDexEnabled true
 
         vectorDrawables.useSupportLibrary = true
@@ -123,9 +132,10 @@ android {
         buildConfigField "int", "CONTENT_PROXY_PORT", "443"
         buildConfigField "String", "SIGNAL_AGENT", "\"OWA\""
         buildConfigField "String", "CDS_MRENCLAVE", "\"c98e00a4e3ff977a56afefe7362a27e4961e4f19e211febfbb19b897e6b80b15\""
-        buildConfigField "String", "KBS_ENCLAVE_NAME", "\"fe7c1bfae98f9b073d220366ea31163ee82f6d04bead774f71ca8e5c40847bfe\""
-        buildConfigField "String", "KBS_SERVICE_ID", "\"fe7c1bfae98f9b073d220366ea31163ee82f6d04bead774f71ca8e5c40847bfe\""
-        buildConfigField "String", "KBS_MRENCLAVE", "\"a3baab19ef6ce6f34ab9ebb25ba722725ae44a8872dc0ff08ad6d83a9489de87\""
+        buildConfigField "KbsEnclave", "KBS_ENCLAVE", "new KbsEnclave(\"fe7c1bfae98f9b073d220366ea31163ee82f6d04bead774f71ca8e5c40847bfe\"," +
+                                                                     "\"fe7c1bfae98f9b073d220366ea31163ee82f6d04bead774f71ca8e5c40847bfe\", " +
+                                                                     "\"a3baab19ef6ce6f34ab9ebb25ba722725ae44a8872dc0ff08ad6d83a9489de87\")";
+        buildConfigField "KbsEnclave[]", "KBS_FALLBACKS", "new KbsEnclave[0]"
         buildConfigField "String", "UNIDENTIFIED_SENDER_TRUST_ROOT", "\"BXu6QIKVz5MA8gstzfOgRQGqyLqOwNKHL6INkv3IHWMF\""
         buildConfigField "String", "ZKGROUP_SERVER_PUBLIC_PARAMS", "\"AMhf5ywVwITZMsff/eCyudZx9JDmkkkbV6PInzG4p8x3VqVJSFiMvnvlEKWuRob/1eaIetR31IYeAbm0NdOuHH8Qi+Rexi1wLlpzIo1gstHWBfZzy1+qHRV5A4TqPp15YzBPm0WSggW6PbSn+F4lf57VCnHF7p8SvzAA2ZZJPYJURt8X7bbg+H3i+PEjH9DXItNEqs2sNcug37xZQDLm7X0=\""
         buildConfigField "String[]", "LANGUAGES", "new String[]{\"" + autoResConfig().collect { s -> s.replace('-r', '_') }.join('", "') + '"}'
@@ -165,7 +175,7 @@ android {
     }
 
     aaptOptions {
-        ignoreAssetsPattern '!contours.tfl:!LMprec_600.emd:!fssd_25_8bit_gray_v1.tflite:!fssd_25_8bit_v1.tflite:!blazeface.tfl'
+        ignoreAssetsPattern '!contours.tfl:!LMprec_600.emd:!blazeface.tfl'
     }
 
     buildTypes {
@@ -195,6 +205,8 @@ android {
         }
         staging {
             initWith debug
+            applicationIdSuffix ".staging"
+            signingConfig signingConfigs.staging
 
             buildConfigField "String", "SIGNAL_URL", "\"https://textsecure-service-staging.whispersystems.org\""
             buildConfigField "String", "STORAGE_URL", "\"https://storage-staging.signal.org\""
@@ -203,8 +215,10 @@ android {
             buildConfigField "String", "SIGNAL_CONTACT_DISCOVERY_URL", "\"https://api-staging.directory.signal.org\""
             buildConfigField "String", "SIGNAL_KEY_BACKUP_URL", "\"https://api-staging.backup.signal.org\""
             buildConfigField "String", "CDS_MRENCLAVE", "\"bd123560b01c8fa92935bc5ae15cd2064e5c45215f23f0bd40364d521329d2ad\""
-            buildConfigField "String", "KBS_ENCLAVE_NAME", "\"823a3b2c037ff0cbe305cc48928cfcc97c9ed4a8ca6d49af6f7d6981fb60a4e9\""
-            buildConfigField "String", "KBS_SERVICE_ID", "\"038c40bbbacdc873caa81ac793bb75afde6dfe436a99ab1f15e3f0cbb7434ced\""
+            buildConfigField "KbsEnclave", "KBS_ENCLAVE", "new KbsEnclave(\"823a3b2c037ff0cbe305cc48928cfcc97c9ed4a8ca6d49af6f7d6981fb60a4e9\", " +
+                                                                         "\"038c40bbbacdc873caa81ac793bb75afde6dfe436a99ab1f15e3f0cbb7434ced\", " +
+                                                                         "\"a3baab19ef6ce6f34ab9ebb25ba722725ae44a8872dc0ff08ad6d83a9489de87\")"
+            buildConfigField "KbsEnclave[]", "KBS_FALLBACKS", "new KbsEnclave[0]"
             buildConfigField "String", "UNIDENTIFIED_SENDER_TRUST_ROOT", "\"BbqY1DzohE4NUZoVF+L18oUPrK3kILllLEJh2UnPSsEx\""
             buildConfigField "String", "ZKGROUP_SERVER_PUBLIC_PARAMS", "\"ABSY21VckQcbSXVNCGRYJcfWHiAMZmpTtTELcDmxgdFbtp/bWsSxZdMKzfCp8rvIs8ocCU3B37fT3r4Mi5qAemeGeR2X+/YmOGR5ofui7tD5mDQfstAI9i+4WpMtIe8KC3wU5w3Inq3uNWVmoGtpKndsNfwJrCg0Hd9zmObhypUnSkfYn2ooMOOnBpfdanRtrvetZUayDMSC5iSRcXKpdls=\""
         }
@@ -301,6 +315,7 @@ dependencies {
 
     implementation 'com.google.android.exoplayer:exoplayer-core:2.9.1'
     implementation 'com.google.android.exoplayer:exoplayer-ui:2.9.1'
+    implementation 'com.google.android.exoplayer:extension-mediasession:2.9.1'
 
     implementation 'org.conscrypt:conscrypt-android:2.0.0'
     implementation 'org.signal:aesgcmprovider:0.0.3'
@@ -310,7 +325,7 @@ dependencies {
 
     implementation 'org.signal:argon2:13.1@aar'
 
-    implementation 'org.signal:ringrtc-android:2.5.1'
+    implementation 'org.signal:ringrtc-android:2.7.0'
 
     implementation "me.leolin:ShortcutBadger:1.1.16"
     implementation 'se.emilsjolander:stickylistheaders:2.7.0'
@@ -371,10 +386,11 @@ dependencies {
     testImplementation 'org.powermock:powermock-classloading-xstream:1.7.4'
 
     testImplementation 'androidx.test:core:1.2.0'
-    testImplementation ('org.robolectric:robolectric:4.2') {
+    testImplementation ('org.robolectric:robolectric:4.4') {
         exclude group: 'com.google.protobuf', module: 'protobuf-java'
     }
-    testImplementation 'org.robolectric:shadows-multidex:4.2'
+    testImplementation 'org.robolectric:shadows-multidex:4.4'
+    testImplementation 'org.hamcrest:hamcrest:2.2'
 
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
@@ -440,16 +456,6 @@ task signProductionWebsiteRelease {
     }
 }
 
-tasks.whenTaskAdded { task ->
-    if (task.name.equals("assemblePlayRelease")) {
-        task.finalizedBy signProductionPlayRelease
-    }
-
-    if (task.name.equals("assembleWebsiteRelease")) {
-        task.finalizedBy signProductionWebsiteRelease
-    }
-}
-
 def getLastCommitTimestamp() {
     new ByteArrayOutputStream().withStream { os ->
         def result = exec {

app/src/flipper/AndroidManifest.xml

@@ -5,5 +5,12 @@
 
     <application
         android:name=".FlipperApplicationContext"
-        tools:replace="android:name"/>
+        tools:replace="android:name">
+
+        <activity
+            android:name="com.facebook.flipper.android.diagnostics.FlipperDiagnosticActivity"
+            android:exported="true" />
+
+    </application>
+
 </manifest>

app/src/main/AndroidManifest.xml

@@ -5,7 +5,7 @@
 
     <uses-sdk tools:overrideLibrary="androidx.camera.core,androidx.camera.camera2,androidx.camera.lifecycle" />
 
-    <permission android:name="org.thoughtcrime.securesms.ACCESS_SECRETS"
+    <permission android:name="${applicationId}.ACCESS_SECRETS"
                 android:label="Access to TextSecure Secrets"
                 android:protectionLevel="signature" />
 
@@ -36,7 +36,8 @@
     <uses-permission android:name="android.permission.WRITE_SMS"/>
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+                     android:maxSdkVersion="28" />
 
     <uses-permission android:name="android.permission.CAMERA" />
 
@@ -113,7 +114,7 @@
     <meta-data android:name="google_analytics_adid_collection_enabled" android:value="false" />
     <meta-data android:name="firebase_messaging_auto_init_enabled" android:value="false" />
 
-    <activity android:name="org.thoughtcrime.securesms.WebRtcCallActivity"
+    <activity android:name=".WebRtcCallActivity"
               android:theme="@style/TextSecure.LightTheme.WebRTCCall"
               android:excludeFromRecents="true"
               android:screenOrientation="portrait"
@@ -127,25 +128,25 @@
               android:theme="@style/TextSecure.DarkNoActionBar"
               android:screenOrientation="portrait"
               android:noHistory="true"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".InviteActivity"
               android:theme="@style/Signal.Light.NoActionBar.Invite"
               android:windowSoftInputMode="stateHidden"
               android:parentActivityName=".MainActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         <meta-data
             android:name="android.support.PARENT_ACTIVITY"
-            android:value="org.thoughtcrime.securesms.MainActivity" />
+            android:value=".MainActivity" />
     </activity>
 
     <activity android:name=".PromptMmsActivity"
               android:label="Configure MMS Settings"
               android:windowSoftInputMode="stateUnchanged"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".DeviceProvisioningActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         <intent-filter>
             <action android:name="android.intent.action.VIEW" />
             <category android:name="android.intent.category.DEFAULT" />
@@ -155,7 +156,7 @@
     </activity>
 
     <activity android:name=".preferences.MmsPreferencesActivity"
-               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".sharing.ShareActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
@@ -164,7 +165,7 @@
               android:taskAffinity=""
               android:noHistory="true"
               android:windowSoftInputMode="stateHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         <intent-filter>
             <action android:name="android.intent.action.SEND" />
             <category android:name="android.intent.category.DEFAULT"/>
@@ -195,7 +196,7 @@
               android:launchMode="singleTask"
               android:noHistory="true"
               android:windowSoftInputMode="stateHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         <intent-filter>
             <action android:name="android.intent.action.VIEW" />
             <category android:name="android.intent.category.DEFAULT" />
@@ -223,6 +224,14 @@
             <category android:name="android.intent.category.MULTIWINDOW_LAUNCHER" />
         </intent-filter>
 
+        <intent-filter>
+            <action android:name="android.intent.action.VIEW" />
+            <category android:name="android.intent.category.DEFAULT" />
+            <category android:name="android.intent.category.BROWSABLE" />
+            <data android:scheme="sgnl"
+                  android:host="signal.group" />
+        </intent-filter>
+
         <intent-filter android:autoVerify="true"
                        tools:targetApi="23">
             <action android:name="android.intent.action.VIEW" />
@@ -242,7 +251,7 @@
     <activity android:name=".conversation.ConversationActivity"
               android:windowSoftInputMode="stateUnchanged"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
               android:parentActivityName=".MainActivity">
         <meta-data
                 android:name="android.support.PARENT_ACTIVITY"
@@ -257,16 +266,16 @@
               android:taskAffinity=""
               android:excludeFromRecents="true"
               android:theme="@style/TextSecure.LightTheme.Popup"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode" />
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
     <activity android:name=".messagedetails.MessageDetailsActivity"
               android:label="@string/AndroidManifest__message_details"
               android:windowSoftInputMode="stateHidden"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".groups.ui.pendingmemberinvites.PendingMemberInvitesActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
 
     <activity android:name=".groups.ui.invitesandrequests.ManagePendingAndRequestingMembersActivity"
@@ -275,64 +284,64 @@
 
     <activity android:name=".groups.ui.managegroup.ManageGroupActivity"
               android:windowSoftInputMode="stateAlwaysHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".recipients.ui.managerecipient.ManageRecipientActivity"
               android:windowSoftInputMode="stateAlwaysHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".DatabaseMigrationActivity"
               android:theme="@style/NoAnimation.Theme.AppCompat.Light.DarkActionBar"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".migrations.ApplicationMigrationActivity"
               android:theme="@style/NoAnimation.Theme.AppCompat.Light.DarkActionBar"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
       <activity android:name=".PassphraseCreateActivity"
               android:label="@string/AndroidManifest__create_passphrase"
               android:windowSoftInputMode="stateUnchanged"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".PassphrasePromptActivity"
               android:launchMode="singleTask"
               android:theme="@style/TextSecure.LightIntroTheme"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".NewConversationActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:windowSoftInputMode="stateAlwaysVisible"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".PushContactSelectionActivity"
           android:label="@string/AndroidManifest__select_contacts"
           android:windowSoftInputMode="stateHidden"
-          android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+          android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".giph.ui.GiphyActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:windowSoftInputMode="stateHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".mediasend.MediaSendActivity"
               android:theme="@style/TextSecure.FullScreenMedia"
               android:windowSoftInputMode="stateHidden"
               android:launchMode="singleTop"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".PassphraseChangeActivity"
               android:label="@string/AndroidManifest__change_passphrase"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".VerifyIdentityActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".ApplicationPreferencesActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         <intent-filter>
             <action android:name="android.intent.action.MAIN" />
             <category android:name="android.intent.category.NOTIFICATION_PREFERENCES" />
@@ -343,45 +352,45 @@
               android:launchMode="singleTask"
               android:theme="@style/TextSecure.LightRegistrationTheme"
               android:windowSoftInputMode="stateUnchanged"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".revealable.ViewOnceMessageActivity"
               android:launchMode="singleTask"
               android:theme="@style/TextSecure.FullScreenMedia"
               android:windowSoftInputMode="stateHidden"
               android:excludeFromRecents="true"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".stickers.StickerManagementActivity"
               android:launchMode="singleTask"
               android:theme="@style/TextSecure.LightTheme"
               android:windowSoftInputMode="stateUnchanged"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
      <activity android:name=".DeviceActivity"
                android:label="@string/AndroidManifest__linked_devices"
-               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".logsubmit.SubmitDebugLogActivity"
               android:label="@string/AndroidManifest__log_submit"
               android:windowSoftInputMode="stateHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".MediaPreviewActivity"
               android:label="@string/AndroidManifest__media_preview"
               android:windowSoftInputMode="stateHidden"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".AvatarPreviewActivity"
               android:label="@string/AndroidManifest__media_preview"
               android:windowSoftInputMode="stateHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".mediaoverview.MediaOverviewActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:windowSoftInputMode="stateHidden"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".DummyActivity"
               android:theme="@android:style/Theme.NoDisplay"
@@ -396,7 +405,7 @@
 
     <activity android:name=".PlayServicesProblemActivity"
               android:theme="@style/TextSecure.DialogActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".SmsSendtoActivity">
         <intent-filter>
@@ -420,7 +429,7 @@
               android:excludeFromRecents="true"
               android:theme="@style/NoAnimation.Theme.BlackScreen"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
 
         <intent-filter>
             <action android:name="android.intent.action.VIEW" />
@@ -432,15 +441,15 @@
 
     <activity android:name=".mediasend.AvatarSelectionActivity"
               android:theme="@style/TextSecure.FullScreenMedia"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".BlockedContactsActivity"
               android:theme="@style/TextSecure.LightTheme"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".scribbles.ImageEditorStickerSelectActivity"
               android:theme="@style/TextSecure.DarkTheme"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".profiles.edit.EditProfileActivity"
               android:theme="@style/TextSecure.LightRegistrationTheme"
@@ -449,16 +458,16 @@
     <activity android:name=".lock.v2.CreateKbsPinActivity"
             android:theme="@style/TextSecure.LightRegistrationTheme"
             android:windowSoftInputMode="adjustResize"
-            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".lock.v2.KbsMigrationActivity"
             android:theme="@style/TextSecure.LightRegistrationTheme"
             android:windowSoftInputMode="adjustResize"
-            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".ClearProfileAvatarActivity"
             android:theme="@style/Theme.AppCompat.Dialog.Alert"
-            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
             android:icon="@drawable/clear_profile_avatar"
             android:label="@string/AndroidManifest_remove_photo">
 
@@ -474,39 +483,39 @@
     <activity android:name=".messagerequests.MessageRequestMegaphoneActivity"
               android:theme="@style/TextSecure.LightRegistrationTheme"
               android:windowSoftInputMode="adjustResize"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".contactshare.ContactShareEditActivity"
               android:theme="@style/TextSecure.LightTheme"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".contactshare.ContactNameEditActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".contactshare.SharedContactDetailsActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".ShortcutLauncherActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:exported="true"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity
             android:name=".maps.PlacePickerActivity"
             android:label="@string/PlacePickerActivity_title"
             android:theme="@style/Theme.Signal.DayNight.NoActionBar"
-            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".MainActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:launchMode="singleTask"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
     <activity android:name=".pin.PinRestoreActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
     <activity android:name=".groups.ui.creategroup.CreateGroupActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
@@ -521,18 +530,30 @@
               android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
 
     <activity android:name=".groups.ui.chooseadmin.ChooseNewAdminActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"/>
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
     <activity android:name=".megaphone.ClientDeprecatedActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"
               android:launchMode="singleTask" />
 
-    <service android:enabled="true" android:name="org.thoughtcrime.securesms.service.WebRtcCallService"/>
+    <service android:enabled="true" android:name=".service.WebRtcCallService"/>
     <service android:enabled="true" android:name=".service.ApplicationMigrationService"/>
     <service android:enabled="true" android:exported="false" android:name=".service.KeyCachingService"/>
     <service android:enabled="true" android:name=".messages.IncomingMessageObserver$ForegroundService"/>
 
+    <service android:name=".components.voice.VoiceNotePlaybackService">
+        <intent-filter>
+            <action android:name="android.media.browse.MediaBrowserService" />
+        </intent-filter>
+    </service>
+
+    <receiver android:name="androidx.media.session.MediaButtonReceiver" >
+        <intent-filter>
+            <action android:name="android.intent.action.MEDIA_BUTTON" />
+        </intent-filter>
+    </receiver>
+
     <service android:name=".service.QuickResponseService"
              android:permission="android.permission.SEND_RESPOND_VIA_MESSAGE"
              android:exported="true" >
@@ -650,15 +671,15 @@
     <provider android:name=".providers.PartProvider"
               android:grantUriPermissions="true"
               android:exported="false"
-              android:authorities="org.thoughtcrime.provider.securesms" />
+              android:authorities="${applicationId}.part" />
 
     <provider android:name=".providers.MmsBodyProvider"
               android:grantUriPermissions="true"
               android:exported="false"
-              android:authorities="org.thoughtcrime.provider.securesms.mms" />
+              android:authorities="${applicationId}.mms" />
 
     <provider android:name="androidx.core.content.FileProvider"
-              android:authorities="org.thoughtcrime.securesms.fileprovider"
+              android:authorities="${applicationId}.fileprovider"
               android:exported="false"
               android:grantUriPermissions="true">
 
@@ -667,23 +688,23 @@
     </provider>
 
     <provider android:name=".database.DatabaseContentProviders$Conversation"
-              android:authorities="org.thoughtcrime.securesms.database.conversation"
+              android:authorities="${applicationId}.database.conversation"
               android:exported="false" />
 
     <provider android:name=".database.DatabaseContentProviders$ConversationList"
-              android:authorities="org.thoughtcrime.securesms.database.conversationlist"
+              android:authorities="${applicationId}.database.conversationlist"
               android:exported="false" />
 
     <provider android:name=".database.DatabaseContentProviders$Attachment"
-              android:authorities="org.thoughtcrime.securesms.database.attachment"
+              android:authorities="${applicationId}.database.attachment"
               android:exported="false" />
 
     <provider android:name=".database.DatabaseContentProviders$Sticker"
-              android:authorities="org.thoughtcrime.securesms.database.sticker"
+              android:authorities="${applicationId}.database.sticker"
               android:exported="false" />
 
     <provider android:name=".database.DatabaseContentProviders$StickerPack"
-              android:authorities="org.thoughtcrime.securesms.database.stickerpack"
+              android:authorities="${applicationId}.database.stickerpack"
               android:exported="false" />
 
     <receiver android:name=".service.BootReceiver">

app/src/main/java/org/thoughtcrime/securesms/AppCapabilities.java

@@ -1,7 +1,6 @@
 package org.thoughtcrime.securesms;
 
-import org.thoughtcrime.securesms.util.FeatureFlags;
-import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
+import org.whispersystems.signalservice.api.account.AccountAttributes;
 
 public final class AppCapabilities {
 
@@ -9,12 +8,13 @@ public final class AppCapabilities {
   }
 
   private static final boolean UUID_CAPABLE = false;
+  private static final boolean GV2_CAPABLE  = true;
 
   /**
    * @param storageCapable Whether or not the user can use storage service. This is another way of
    *                       asking if the user has set a Signal PIN or not.
    */
-  public static SignalServiceProfile.Capabilities getCapabilities(boolean storageCapable) {
-    return new SignalServiceProfile.Capabilities(UUID_CAPABLE, FeatureFlags.groupsV2(), storageCapable);
+  public static AccountAttributes.Capabilities getCapabilities(boolean storageCapable) {
+    return new AccountAttributes.Capabilities(UUID_CAPABLE, GV2_CAPABLE, storageCapable);
   }
 }

app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java

@@ -137,7 +137,6 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
     NotificationChannels.create(this);
     RefreshPreKeysJob.scheduleIfNecessary();
     StorageSyncHelper.scheduleRoutineSync();
-    RetrieveProfileJob.enqueueRoutineFetchIfNecessary(this);
     RegistrationUtil.maybeMarkRegistrationComplete(this);
     ProcessLifecycleOwner.get().getLifecycle().addObserver(this);
 
@@ -155,6 +154,7 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
     Log.i(TAG, "App is now visible.");
     FeatureFlags.refreshIfNecessary();
     ApplicationDependencies.getRecipientCache().warmUp();
+    RetrieveProfileJob.enqueueRoutineFetchIfNecessary(this);
     executePendingContactSync();
     KeyCachingService.onAppForegrounded(this);
     ApplicationDependencies.getFrameRateTracker().begin();

app/src/main/java/org/thoughtcrime/securesms/ApplicationPreferencesActivity.java

@@ -37,6 +37,7 @@ import org.thoughtcrime.securesms.keyvalue.SignalStore;
 import org.thoughtcrime.securesms.preferences.AdvancedPreferenceFragment;
 import org.thoughtcrime.securesms.preferences.AppProtectionPreferenceFragment;
 import org.thoughtcrime.securesms.preferences.AppearancePreferenceFragment;
+import org.thoughtcrime.securesms.preferences.BackupsPreferenceFragment;
 import org.thoughtcrime.securesms.preferences.ChatsPreferenceFragment;
 import org.thoughtcrime.securesms.preferences.CorrectedPreferenceFragment;
 import org.thoughtcrime.securesms.preferences.NotificationsPreferenceFragment;
@@ -64,6 +65,8 @@ import org.thoughtcrime.securesms.util.ThemeUtil;
 public class ApplicationPreferencesActivity extends PassphraseRequiredActivity
     implements SharedPreferences.OnSharedPreferenceChangeListener
 {
+  public static final String LAUNCH_TO_BACKUPS_FRAGMENT = "launch.to.backups.fragment";
+
   @SuppressWarnings("unused")
   private static final String TAG = ApplicationPreferencesActivity.class.getSimpleName();
 
@@ -96,6 +99,8 @@ public class ApplicationPreferencesActivity extends PassphraseRequiredActivity
 
     if (getIntent() != null && getIntent().getCategories() != null && getIntent().getCategories().contains("android.intent.category.NOTIFICATION_PREFERENCES")) {
       initFragment(android.R.id.content, new NotificationsPreferenceFragment());
+    } else if (getIntent() != null && getIntent().getBooleanExtra(LAUNCH_TO_BACKUPS_FRAGMENT, false)) {
+      initFragment(android.R.id.content, new BackupsPreferenceFragment());
     } else if (icicle == null) {
       initFragment(android.R.id.content, new ApplicationPreferenceFragment());
     }

app/src/main/java/org/thoughtcrime/securesms/AvatarPreviewActivity.java

@@ -1,6 +1,5 @@
 package org.thoughtcrime.securesms;
 
-import android.annotation.TargetApi;
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
@@ -10,12 +9,7 @@ import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Bundle;
 import android.transition.TransitionInflater;
-import android.view.DisplayCutout;
 import android.view.View;
-import android.view.ViewGroup;
-import android.view.ViewTreeObserver;
-import android.view.Window;
-import android.view.WindowManager;
 import android.widget.ImageView;
 
 import androidx.annotation.NonNull;
@@ -40,6 +34,7 @@ import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.mms.GlideApp;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
+import org.thoughtcrime.securesms.util.FullscreenHelper;
 
 /**
  * Activity for displaying avatars full screen.
@@ -81,17 +76,7 @@ public final class AvatarPreviewActivity extends PassphraseRequiredActivity {
 
     setSupportActionBar(toolbar);
 
-    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                         WindowManager.LayoutParams.FLAG_FULLSCREEN);
-
-    if (Build.VERSION.SDK_INT >= 28) {
-      getWindow().getAttributes().layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
-      toolbar.getViewTreeObserver().addOnGlobalLayoutListener(new DisplayCutoutAdjuster(toolbar, findViewById(R.id.toolbar_cutout_spacer)));
-    }
-
-    showSystemUI();
-
-    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+    requireSupportActionBar().setDisplayHomeAsUpEnabled(true);
 
     Context     context     = getApplicationContext();
     RecipientId recipientId = RecipientId.from(getIntent().getStringExtra(RECIPIENT_ID_EXTRA));
@@ -140,47 +125,13 @@ public final class AvatarPreviewActivity extends PassphraseRequiredActivity {
       toolbar.setTitle(recipient.getDisplayName(context));
     });
 
-    avatar.setOnClickListener(v -> toggleUiVisibility());
+    FullscreenHelper fullscreenHelper = new FullscreenHelper(this);
 
-    showAndHideWithSystemUI(getWindow(), findViewById(R.id.toolbar_layout));
-  }
+    findViewById(android.R.id.content).setOnClickListener(v -> fullscreenHelper.toggleUiVisibility());
 
-  private static void showAndHideWithSystemUI(@NonNull Window window, @NonNull View... views) {
-    window.getDecorView().setOnSystemUiVisibilityChangeListener(visibility -> {
-      boolean hide = (visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0;
+    fullscreenHelper.configureToolbarSpacer(findViewById(R.id.toolbar_cutout_spacer));
 
-      for (View view : views) {
-        view.animate()
-            .alpha(hide ? 0 : 1)
-            .start();
-      }
-    });
-  }
-
-  private void toggleUiVisibility() {
-    int systemUiVisibility = getWindow().getDecorView().getSystemUiVisibility();
-    if ((systemUiVisibility & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0) {
-      showSystemUI();
-    } else {
-      hideSystemUI();
-    }
-  }
-
-  private void hideSystemUI() {
-    getWindow().getDecorView().setSystemUiVisibility(
-        View.SYSTEM_UI_FLAG_IMMERSIVE              |
-        View.SYSTEM_UI_FLAG_LAYOUT_STABLE          |
-        View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
-        View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN      |
-        View.SYSTEM_UI_FLAG_HIDE_NAVIGATION        |
-        View.SYSTEM_UI_FLAG_FULLSCREEN              );
-  }
-
-  private void showSystemUI() {
-    getWindow().getDecorView().setSystemUiVisibility(
-        View.SYSTEM_UI_FLAG_LAYOUT_STABLE          |
-        View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
-        View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN       );
+    fullscreenHelper.showAndHideWithSystemUI(getWindow(), findViewById(R.id.toolbar_layout));
   }
 
   @Override
@@ -188,36 +139,4 @@ public final class AvatarPreviewActivity extends PassphraseRequiredActivity {
     onBackPressed();
     return true;
   }
-
-  /**
-   * Adjust a spacer for the toolbar when a display cutout is detected. Runs within
-   * a layout listener because the activity delays view attachment due to the transitions
-   * and needs to update on device rotation.
-   */
-  @TargetApi(28)
-  private static class DisplayCutoutAdjuster implements ViewTreeObserver.OnGlobalLayoutListener {
-
-    private final View view;
-    private final View spacer;
-
-    private DisplayCutoutAdjuster(@NonNull View view, @NonNull View spacer) {
-      this.view   = view;
-      this.spacer = spacer;
-    }
-
-    @Override
-    public void onGlobalLayout() {
-      if (view.getRootWindowInsets() == null) {
-        return;
-      }
-
-      DisplayCutout cutout = view.getRootWindowInsets().getDisplayCutout();
-      if (cutout != null) {
-        ViewGroup.LayoutParams params = spacer.getLayoutParams();
-        params.height = cutout.getSafeInsetTop();
-        spacer.setLayoutParams(params);
-        spacer.setVisibility(View.VISIBLE);
-      }
-    }
-  }
 }

app/src/main/java/org/thoughtcrime/securesms/BindableConversationItem.java

@@ -1,10 +1,14 @@
 package org.thoughtcrime.securesms;
 
+import android.net.Uri;
 import android.view.View;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.Observer;
 
+import org.thoughtcrime.securesms.components.voice.VoiceNotePlaybackState;
 import org.thoughtcrime.securesms.contactshare.Contact;
 import org.thoughtcrime.securesms.conversation.ConversationMessage;
 import org.thoughtcrime.securesms.database.model.MessageRecord;
@@ -22,7 +26,8 @@ import java.util.Locale;
 import java.util.Set;
 
 public interface BindableConversationItem extends Unbindable {
-  void bind(@NonNull ConversationMessage messageRecord,
+  void bind(@NonNull LifecycleOwner lifecycleOwner,
+            @NonNull ConversationMessage messageRecord,
             @NonNull Optional<MessageRecord> previousMessageRecord,
             @NonNull Optional<MessageRecord> nextMessageRecord,
             @NonNull GlideRequests glideRequests,
@@ -49,6 +54,11 @@ public interface BindableConversationItem extends Unbindable {
     void onReactionClicked(@NonNull View reactionTarget, long messageId, boolean isMms);
     void onGroupMemberClicked(@NonNull RecipientId recipientId, @NonNull GroupId groupId);
     void onMessageWithErrorClicked(@NonNull MessageRecord messageRecord);
+    void onRegisterVoiceNoteCallbacks(@NonNull Observer<VoiceNotePlaybackState> onPlaybackStartObserver);
+    void onUnregisterVoiceNoteCallbacks(@NonNull Observer<VoiceNotePlaybackState> onPlaybackStartObserver);
+    void onVoiceNotePause(@NonNull Uri uri);
+    void onVoiceNotePlay(@NonNull Uri uri, long messageId, double position);
+    void onVoiceNoteSeekTo(@NonNull Uri uri, double position);
 
     /** @return true if handled, false if you want to let the normal url handling continue */
     boolean onUrlClicked(@NonNull String url);

app/src/main/java/org/thoughtcrime/securesms/ContactSelectionListFragment.java

@@ -106,7 +106,7 @@ public final class ContactSelectionListFragment extends LoggingFragment
   public static final String MULTI_SELECT      = "multi_select";
   public static final String REFRESHABLE       = "refreshable";
   public static final String RECENTS           = "recents";
-  public static final String TOTAL_CAPACITY    = "total_capacity";
+  public static final String SELECTION_LIMIT   = "selection_limit";
   public static final String CURRENT_SELECTION = "current_selection";
 
   private ConstraintLayout            constraintLayout;
@@ -208,7 +208,7 @@ public final class ContactSelectionListFragment extends LoggingFragment
 
     swipeRefresh.setEnabled(requireActivity().getIntent().getBooleanExtra(REFRESHABLE, true));
 
-    selectionLimit   = requireActivity().getIntent().getIntExtra(TOTAL_CAPACITY, NO_LIMIT);
+    selectionLimit   = requireActivity().getIntent().getIntExtra(SELECTION_LIMIT, NO_LIMIT);
     currentSelection = getCurrentSelection();
 
     updateGroupLimit(getChipCount());

app/src/main/java/org/thoughtcrime/securesms/KbsEnclave.java

@@ -0,0 +1,49 @@
+package org.thoughtcrime.securesms;
+
+import androidx.annotation.NonNull;
+
+import java.util.Objects;
+
+/**
+ * Used in our {@link BuildConfig} to tie together the various attributes of a KBS instance. This
+ * is sitting in the root directory so it can be accessed by the build config.
+ */
+public final class KbsEnclave {
+
+  private final String enclaveName;
+  private final String serviceId;
+  private final String mrEnclave;
+
+  public KbsEnclave(@NonNull String enclaveName, @NonNull String serviceId, @NonNull String mrEnclave) {
+    this.enclaveName = enclaveName;
+    this.serviceId   = serviceId;
+    this.mrEnclave   = mrEnclave;
+  }
+
+  public @NonNull String getMrEnclave() {
+    return mrEnclave;
+  }
+
+  public @NonNull String getEnclaveName() {
+    return enclaveName;
+  }
+
+  public @NonNull String getServiceId() {
+    return serviceId;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    KbsEnclave enclave = (KbsEnclave) o;
+    return enclaveName.equals(enclave.enclaveName) &&
+           serviceId.equals(enclave.serviceId)     &&
+           mrEnclave.equals(enclave.mrEnclave);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(enclaveName, serviceId, mrEnclave);
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/MediaPreviewActivity.java

@@ -31,8 +31,6 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.Window;
-import android.view.WindowManager;
 import android.widget.TextView;
 import android.widget.Toast;
 
@@ -69,8 +67,10 @@ import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.sharing.ShareActivity;
 import org.thoughtcrime.securesms.util.AttachmentUtil;
 import org.thoughtcrime.securesms.util.DateUtils;
+import org.thoughtcrime.securesms.util.FullscreenHelper;
 import org.thoughtcrime.securesms.util.SaveAttachmentTask;
 import org.thoughtcrime.securesms.util.SaveAttachmentTask.Attachment;
+import org.thoughtcrime.securesms.util.StorageUtil;
 
 import java.util.HashMap;
 import java.util.Locale;
@@ -119,6 +119,7 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
   private boolean               cameFromAllMedia;
   private boolean               showThread;
   private MediaDatabase.Sorting sorting;
+  private FullscreenHelper      fullscreenHelper;
 
   private @Nullable Cursor cursor = null;
 
@@ -133,7 +134,7 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
     intent.putExtra(MediaPreviewActivity.SIZE_EXTRA, attachment.getSize());
     intent.putExtra(MediaPreviewActivity.CAPTION_EXTRA, attachment.getCaption());
     intent.putExtra(MediaPreviewActivity.LEFT_IS_RECENT_EXTRA, leftIsRecent);
-    intent.setDataAndType(attachment.getDataUri(), mediaRecord.getContentType());
+    intent.setDataAndType(attachment.getUri(), mediaRecord.getContentType());
     return intent;
   }
 
@@ -147,10 +148,7 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
 
     viewModel = ViewModelProviders.of(this).get(MediaPreviewViewModel.class);
 
-    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                         WindowManager.LayoutParams.FLAG_FULLSCREEN);
-
-    showSystemUI();
+    fullscreenHelper = new FullscreenHelper(this);
 
     getSupportActionBar().setDisplayHomeAsUpEnabled(true);
 
@@ -261,6 +259,7 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
     albumRail        = findViewById(R.id.media_preview_album_rail);
     albumRailAdapter = new MediaRailAdapter(GlideApp.with(this), this, false);
 
+    albumRail.setItemAnimator(null); // Or can crash when set to INVISIBLE while animating by FullscreenHelper https://issuetracker.google.com/issues/148720682
     albumRail.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
     albumRail.setAdapter(albumRailAdapter);
 
@@ -273,9 +272,9 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
 
     anchorMarginsToBottomInsets(detailsContainer);
 
-    anchorMarginsToTopInsets(toolbarLayout);
+    fullscreenHelper.configureToolbarSpacer(findViewById(R.id.toolbar_cutout_spacer));
 
-    showAndHideWithSystemUI(getWindow(), detailsContainer, toolbarLayout);
+    fullscreenHelper.showAndHideWithSystemUI(getWindow(), detailsContainer, toolbarLayout);
   }
 
   private void initializeResources() {
@@ -386,21 +385,30 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
 
     if (mediaItem != null) {
       SaveAttachmentTask.showWarningDialog(this, (dialogInterface, i) -> {
+        if (StorageUtil.canWriteToMediaStore()) {
+          performSavetoDisk(mediaItem);
+          return;
+        }
+
         Permissions.with(this)
-                   .request(Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE)
+                   .request(Manifest.permission.WRITE_EXTERNAL_STORAGE)
                    .ifNecessary()
                    .withPermanentDenialDialog(getString(R.string.MediaPreviewActivity_signal_needs_the_storage_permission_in_order_to_write_to_external_storage_but_it_has_been_permanently_denied))
                    .onAnyDenied(() -> Toast.makeText(this, R.string.MediaPreviewActivity_unable_to_write_to_external_storage_without_permission, Toast.LENGTH_LONG).show())
                    .onAllGranted(() -> {
-                     SaveAttachmentTask saveTask = new SaveAttachmentTask(MediaPreviewActivity.this);
-                     long saveDate = (mediaItem.date > 0) ? mediaItem.date : System.currentTimeMillis();
-                     saveTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, new Attachment(mediaItem.uri, mediaItem.type, saveDate, null));
+                     performSavetoDisk(mediaItem);
                    })
                    .execute();
       });
     }
   }
 
+  private void performSavetoDisk(@NonNull MediaItem mediaItem) {
+    SaveAttachmentTask saveTask = new SaveAttachmentTask(MediaPreviewActivity.this);
+    long               saveDate = (mediaItem.date > 0) ? mediaItem.date : System.currentTimeMillis();
+    saveTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, new Attachment(mediaItem.uri, mediaItem.type, saveDate, null));
+  }
+
   @SuppressLint("StaticFieldLeak")
   private void deleteMedia() {
     MediaItem mediaItem = getCurrentMediaItem();
@@ -546,7 +554,7 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
 
   @Override
   public boolean singleTapOnMedia() {
-    toggleUiVisibility();
+    fullscreenHelper.toggleUiVisibility();
     return true;
   }
 
@@ -556,32 +564,6 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
     finish();
   }
 
-  private void toggleUiVisibility() {
-    int systemUiVisibility = getWindow().getDecorView().getSystemUiVisibility();
-    if ((systemUiVisibility & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0) {
-      showSystemUI();
-    } else {
-      hideSystemUI();
-    }
-  }
-
-  private void hideSystemUI() {
-    getWindow().getDecorView().setSystemUiVisibility(
-        View.SYSTEM_UI_FLAG_IMMERSIVE              |
-        View.SYSTEM_UI_FLAG_LAYOUT_STABLE          |
-        View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
-        View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN      |
-        View.SYSTEM_UI_FLAG_HIDE_NAVIGATION        |
-        View.SYSTEM_UI_FLAG_FULLSCREEN              );
-  }
-
-  private void showSystemUI() {
-    getWindow().getDecorView().setSystemUiVisibility(
-        View.SYSTEM_UI_FLAG_LAYOUT_STABLE          |
-        View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
-        View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN       );
-  }
-
   private class ViewPagerListener extends ExtendedOnPageChangedListener {
 
     @Override
@@ -697,33 +679,6 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
     });
   }
 
-  private static void anchorMarginsToTopInsets(@NonNull View viewToAnchor) {
-    ViewCompat.setOnApplyWindowInsetsListener(viewToAnchor, (view, insets) -> {
-      ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) view.getLayoutParams();
-
-      layoutParams.setMargins(insets.getSystemWindowInsetLeft(),
-                              insets.getSystemWindowInsetTop(),
-                              insets.getSystemWindowInsetRight(),
-                              layoutParams.bottomMargin);
-
-      view.setLayoutParams(layoutParams);
-
-      return insets;
-    });
-  }
-
-  private static void showAndHideWithSystemUI(@NonNull Window window, @NonNull View... views) {
-    window.getDecorView().setOnSystemUiVisibilityChangeListener(visibility -> {
-      boolean hide = (visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0;
-
-      for (View view : views) {
-        view.animate()
-            .alpha(hide ? 0 : 1)
-            .start();
-      }
-    });
-  }
-
   private static class CursorPagerAdapter extends FragmentStatePagerAdapter implements MediaItemAdapter {
 
     @SuppressLint("UseSparseArrays")
@@ -801,7 +756,7 @@ public final class MediaPreviewActivity extends PassphraseRequiredActivity
       return new MediaItem(Recipient.live(recipientId).get(),
                            Recipient.live(threadRecipientId).get(),
                            attachment,
-                           Objects.requireNonNull(attachment.getDataUri()),
+                           Objects.requireNonNull(attachment.getUri()),
                            mediaRecord.getContentType(),
                            mediaRecord.getDate(),
                            mediaRecord.isOutgoing());

app/src/main/java/org/thoughtcrime/securesms/NewConversationActivity.java

@@ -33,6 +33,7 @@ import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.util.FeatureFlags;
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
 import org.thoughtcrime.securesms.util.views.SimpleProgressDialog;
 import org.whispersystems.libsignal.util.guava.Optional;
@@ -65,16 +66,17 @@ public class NewConversationActivity extends ContactSelectionActivity
       launch(Recipient.resolved(recipientId.get()));
     } else {
       Log.i(TAG, "[onContactSelected] Maybe creating a new recipient.");
-      if (FeatureFlags.cds() && NetworkConstraint.isMet(this)) {
-        Log.i(TAG, "[onContactSelected] CDS enabled. Doing contact refresh.");
+
+      if (TextSecurePreferences.isPushRegistered(this) && NetworkConstraint.isMet(this)) {
+        Log.i(TAG, "[onContactSelected] Doing contact refresh.");
 
         AlertDialog progress = SimpleProgressDialog.show(this);
 
         SimpleTask.run(getLifecycle(), () -> {
           Recipient resolved = Recipient.external(this, number);
 
-          if (!resolved.isRegistered()) {
-            Log.i(TAG, "[onContactSelected] Not registered. Doing a directory refresh.");
+          if (!resolved.isRegistered() || !resolved.hasUuid()) {
+            Log.i(TAG, "[onContactSelected] Not registered or no UUID. Doing a directory refresh.");
             try {
               DirectoryHelper.refreshDirectoryFor(this, resolved, false);
               resolved = Recipient.resolved(resolved.getId());
@@ -102,7 +104,7 @@ public class NewConversationActivity extends ContactSelectionActivity
     intent.putExtra(ConversationActivity.TEXT_EXTRA, getIntent().getStringExtra(ConversationActivity.TEXT_EXTRA));
     intent.setDataAndType(getIntent().getData(), getIntent().getType());
 
-    long existingThread = DatabaseFactory.getThreadDatabase(this).getThreadIdIfExistsFor(recipient);
+    long existingThread = DatabaseFactory.getThreadDatabase(this).getThreadIdIfExistsFor(recipient.getId());
 
     intent.putExtra(ConversationActivity.THREAD_ID_EXTRA, existingThread);
     intent.putExtra(ConversationActivity.DISTRIBUTION_TYPE_EXTRA, ThreadDatabase.DistributionTypes.DEFAULT);

app/src/main/java/org/thoughtcrime/securesms/SmsSendtoActivity.java

@@ -48,7 +48,7 @@ public class SmsSendtoActivity extends Activity {
       Toast.makeText(this, R.string.ConversationActivity_specify_recipient, Toast.LENGTH_LONG).show();
     } else {
       Recipient recipient = Recipient.external(this, destination.getDestination());
-      long      threadId  = DatabaseFactory.getThreadDatabase(this).getThreadIdIfExistsFor(recipient);
+      long      threadId  = DatabaseFactory.getThreadDatabase(this).getThreadIdIfExistsFor(recipient.getId());
 
       nextIntent = new Intent(this, ConversationActivity.class);
       nextIntent.putExtra(ConversationActivity.TEXT_EXTRA, destination.getBody());

app/src/main/java/org/thoughtcrime/securesms/VerifyIdentityActivity.java

@@ -22,6 +22,7 @@ import android.animation.ValueAnimator;
 import android.annotation.SuppressLint;
 import android.content.ActivityNotFoundException;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
@@ -56,6 +57,7 @@ import android.widget.Toast;
 
 import androidx.annotation.DrawableRes;
 import androidx.annotation.NonNull;
+import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.widget.SwitchCompat;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentTransaction;
@@ -90,11 +92,13 @@ import org.whispersystems.libsignal.fingerprint.Fingerprint;
 import org.whispersystems.libsignal.fingerprint.FingerprintParsingException;
 import org.whispersystems.libsignal.fingerprint.FingerprintVersionMismatchException;
 import org.whispersystems.libsignal.fingerprint.NumericFingerprintGenerator;
+import org.whispersystems.libsignal.util.guava.Optional;
 import org.whispersystems.signalservice.api.util.UuidUtil;
 
 import java.io.UnsupportedEncodingException;
 import java.nio.charset.Charset;
 import java.util.Locale;
+import java.util.UUID;
 
 import static org.whispersystems.libsignal.SessionCipher.SESSION_LOCK;
 
@@ -307,16 +311,26 @@ public class VerifyIdentityActivity extends PassphraseRequiredActivity implement
       byte[] localId;
       byte[] remoteId;
 
-      if (FeatureFlags.verifyV2() && recipient.resolve().getUuid().isPresent()) {
+      Recipient resolved = recipient.resolve();
+
+      if (FeatureFlags.verifyV2() && resolved.getUuid().isPresent()) {
         Log.i(TAG, "Using UUID (version 2).");
         version  = 2;
         localId  = UuidUtil.toByteArray(TextSecurePreferences.getLocalUuid(requireContext()));
-        remoteId = UuidUtil.toByteArray(recipient.resolve().getUuid().get());
-      } else {
+        remoteId = UuidUtil.toByteArray(resolved.getUuid().get());
+      } else if (!FeatureFlags.verifyV2() && resolved.getE164().isPresent()) {
         Log.i(TAG, "Using E164 (version 1).");
         version  = 1;
         localId  = TextSecurePreferences.getLocalNumber(requireContext()).getBytes();
-        remoteId = recipient.resolve().requireE164().getBytes();
+        remoteId = resolved.requireE164().getBytes();
+      } else {
+        Log.w(TAG, String.format(Locale.ENGLISH, "Could not show proper verification! verifyV2: %s, hasUuid: %s, hasE164: %s", FeatureFlags.verifyV2(), resolved.getUuid().isPresent(), resolved.getE164().isPresent()));
+        new AlertDialog.Builder(requireContext())
+                       .setMessage(getString(R.string.VerifyIdentityActivity_you_must_first_exchange_messages_in_order_to_view, resolved.getDisplayName(requireContext())))
+                       .setPositiveButton(android.R.string.ok, (dialog, which) -> requireActivity().finish())
+                       .setOnDismissListener(dialog -> requireActivity().finish())
+                       .show();
+        return;
       }
 
       this.recipient.observe(this, this::setRecipientText);

app/src/main/java/org/thoughtcrime/securesms/WebRtcCallActivity.java

@@ -19,8 +19,6 @@ package org.thoughtcrime.securesms;
 
 import android.Manifest;
 import android.app.PictureInPictureParams;
-import android.content.DialogInterface;
-import android.content.DialogInterface.OnClickListener;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.res.Configuration;
@@ -41,9 +39,11 @@ import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
 import org.greenrobot.eventbus.ThreadMode;
 import org.thoughtcrime.securesms.components.TooltipPopup;
+import org.thoughtcrime.securesms.components.webrtc.CallParticipantsState;
 import org.thoughtcrime.securesms.components.webrtc.WebRtcAudioOutput;
 import org.thoughtcrime.securesms.components.webrtc.WebRtcCallView;
 import org.thoughtcrime.securesms.components.webrtc.WebRtcCallViewModel;
+import org.thoughtcrime.securesms.components.webrtc.participantslist.CallParticipantsListDialog;
 import org.thoughtcrime.securesms.conversation.ui.error.SafetyNumberChangeDialog;
 import org.thoughtcrime.securesms.events.WebRtcViewModel;
 import org.thoughtcrime.securesms.logging.Log;
@@ -52,11 +52,12 @@ import org.thoughtcrime.securesms.permissions.Permissions;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.ringrtc.RemotePeer;
 import org.thoughtcrime.securesms.service.WebRtcCallService;
+import org.thoughtcrime.securesms.sms.MessageSender;
 import org.thoughtcrime.securesms.util.EllapsedTimeFormatter;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.ViewUtil;
 import org.whispersystems.libsignal.IdentityKey;
 import org.whispersystems.signalservice.api.messages.calls.HangupMessage;
+import org.whispersystems.signalservice.api.messages.calls.OfferMessage;
 
 public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumberChangeDialog.Callback {
 
@@ -85,6 +86,7 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
 
     requestWindowFeature(Window.FEATURE_NO_TITLE);
     setContentView(R.layout.webrtc_call_activity);
+    //noinspection ConstantConditions
     getSupportActionBar().hide();
 
     setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);
@@ -124,6 +126,11 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     if (!isInPipMode()) {
       EventBus.getDefault().unregister(this);
     }
+
+    CallParticipantsState state = viewModel.getCallParticipantsState().getValue();
+    if (state != null && state.getCallState() == WebRtcViewModel.State.CALL_PRE_JOIN) {
+      finish();
+    }
   }
 
   @Override
@@ -132,11 +139,13 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     super.onStop();
 
     EventBus.getDefault().unregister(this);
-  }
 
-  @Override
-  public void onConfigurationChanged(Configuration newConfiguration) {
-    super.onConfigurationChanged(newConfiguration);
+    CallParticipantsState state = viewModel.getCallParticipantsState().getValue();
+    if (state != null && state.getCallState() == WebRtcViewModel.State.CALL_PRE_JOIN) {
+      Intent intent = new Intent(this, WebRtcCallService.class);
+      intent.setAction(WebRtcCallService.ACTION_CANCEL_PRE_JOIN_CALL);
+      startService(intent);
+    }
   }
 
   @Override
@@ -162,7 +171,7 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
   }
 
   private boolean enterPipModeIfPossible() {
-    if (isSystemPipEnabledAndAvailable()) {
+    if (viewModel.canEnterPipMode() && isSystemPipEnabledAndAvailable()) {
       PictureInPictureParams params = new PictureInPictureParams.Builder()
               .setAspectRatio(new Rational(9, 16))
               .build();
@@ -196,21 +205,18 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
   }
 
   private void initializeResources() {
-    callScreen = ViewUtil.findById(this, R.id.callScreen);
+    callScreen = findViewById(R.id.callScreen);
     callScreen.setControlsListener(new ControlsListener());
   }
 
   private void initializeViewModel() {
     viewModel = ViewModelProviders.of(this).get(WebRtcCallViewModel.class);
     viewModel.setIsInPipMode(isInPipMode());
-    viewModel.getRemoteVideoEnabled().observe(this,callScreen::setRemoteVideoEnabled);
     viewModel.getMicrophoneEnabled().observe(this, callScreen::setMicEnabled);
-    viewModel.getCameraDirection().observe(this, callScreen::setCameraDirection);
-    viewModel.getLocalRenderState().observe(this, callScreen::setLocalRenderState);
     viewModel.getWebRtcControls().observe(this, callScreen::setWebRtcControls);
     viewModel.getEvents().observe(this, this::handleViewModelEvent);
     viewModel.getCallTime().observe(this, this::handleCallTime);
-    viewModel.displaySquareCallCard().observe(this, callScreen::showCallCard);
+    viewModel.getCallParticipantsState().observe(this, callScreen::updateCallParticipants);
   }
 
   private void handleViewModelEvent(@NonNull WebRtcCallViewModel.Event event) {
@@ -375,19 +381,13 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     startService(intent);
   }
 
-  private void handleIncomingCall(@NonNull WebRtcViewModel event) {
-    callScreen.setRecipient(event.getRecipient());
-  }
-
-  private void handleOutgoingCall(@NonNull WebRtcViewModel event) {
-    callScreen.setRecipient(event.getRecipient());
+  private void handleOutgoingCall() {
     callScreen.setStatus(getString(R.string.WebRtcCallActivity__calling));
   }
 
   private void handleTerminate(@NonNull Recipient recipient, @NonNull HangupMessage.Type hangupType) {
     Log.i(TAG, "handleTerminate called: " + hangupType.name());
 
-    callScreen.setRecipient(recipient);
     callScreen.setStatusFromHangupType(hangupType);
 
     EventBus.getDefault().removeStickyEvent(WebRtcViewModel.class);
@@ -398,62 +398,47 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     delayedFinish();
   }
 
-  private void handleCallRinging(@NonNull WebRtcViewModel event) {
-    callScreen.setRecipient(event.getRecipient());
+  private void handleCallRinging() {
     callScreen.setStatus(getString(R.string.RedPhone_ringing));
   }
 
-  private void handleCallBusy(@NonNull WebRtcViewModel event) {
+  private void handleCallBusy() {
     EventBus.getDefault().removeStickyEvent(WebRtcViewModel.class);
-    callScreen.setRecipient(event.getRecipient());
     callScreen.setStatus(getString(R.string.RedPhone_busy));
     delayedFinish(WebRtcCallService.BUSY_TONE_LENGTH);
   }
 
-  private void handleCallConnected(@NonNull WebRtcViewModel event) {
+  private void handleCallConnected() {
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_IGNORE_CHEEK_PRESSES);
-    callScreen.setRecipient(event.getRecipient());
   }
 
-  private void handleRecipientUnavailable(@NonNull WebRtcViewModel event) {
+  private void handleRecipientUnavailable() {
     EventBus.getDefault().removeStickyEvent(WebRtcViewModel.class);
-    callScreen.setRecipient(event.getRecipient());
     callScreen.setStatus(getString(R.string.RedPhone_recipient_unavailable));
     delayedFinish();
   }
 
-  private void handleServerFailure(@NonNull WebRtcViewModel event) {
+  private void handleServerFailure() {
     EventBus.getDefault().removeStickyEvent(WebRtcViewModel.class);
-    callScreen.setRecipient(event.getRecipient());
     callScreen.setStatus(getString(R.string.RedPhone_network_failed));
     delayedFinish();
   }
 
   private void handleNoSuchUser(final @NonNull WebRtcViewModel event) {
     if (isFinishing()) return; // XXX Stuart added this check above, not sure why, so I'm repeating in ignorance. - moxie
-    AlertDialog.Builder dialog = new AlertDialog.Builder(this);
-    dialog.setTitle(R.string.RedPhone_number_not_registered);
-    dialog.setIconAttribute(R.attr.dialog_alert_icon);
-    dialog.setMessage(R.string.RedPhone_the_number_you_dialed_does_not_support_secure_voice);
-    dialog.setCancelable(true);
-    dialog.setPositiveButton(R.string.RedPhone_got_it, new OnClickListener() {
-      @Override
-      public void onClick(DialogInterface dialog, int which) {
-        WebRtcCallActivity.this.handleTerminate(event.getRecipient(), HangupMessage.Type.NORMAL);
-      }
-    });
-    dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
-      @Override
-      public void onCancel(DialogInterface dialog) {
-        WebRtcCallActivity.this.handleTerminate(event.getRecipient(), HangupMessage.Type.NORMAL);
-      }
-    });
-    dialog.show();
+    new AlertDialog.Builder(this)
+                   .setTitle(R.string.RedPhone_number_not_registered)
+                   .setIconAttribute(R.attr.dialog_alert_icon)
+                   .setMessage(R.string.RedPhone_the_number_you_dialed_does_not_support_secure_voice)
+                   .setCancelable(true)
+                   .setPositiveButton(R.string.RedPhone_got_it, (d, w) -> handleTerminate(event.getRecipient(), HangupMessage.Type.NORMAL))
+                   .setOnCancelListener(d -> handleTerminate(event.getRecipient(), HangupMessage.Type.NORMAL))
+                   .show();
   }
 
   private void handleUntrustedIdentity(@NonNull WebRtcViewModel event) {
-    final IdentityKey theirKey  = event.getIdentityKey();
-    final Recipient   recipient = event.getRecipient();
+    final IdentityKey theirKey  = event.getRemoteParticipants().get(0).getIdentityKey();
+    final Recipient   recipient = event.getRemoteParticipants().get(0).getRecipient();
 
     if (theirKey == null) {
       handleTerminate(recipient, HangupMessage.Type.NORMAL);
@@ -493,32 +478,29 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
   }
 
   @Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
-  public void onEventMainThread(final WebRtcViewModel event) {
+  public void onEventMainThread(@NonNull WebRtcViewModel event) {
     Log.i(TAG, "Got message from service: " + event);
 
     viewModel.setRecipient(event.getRecipient());
+    callScreen.setRecipient(event.getRecipient());
 
     switch (event.getState()) {
-      case CALL_CONNECTED:          handleCallConnected(event);                                                break;
-      case NETWORK_FAILURE:         handleServerFailure(event);                                                break;
-      case CALL_RINGING:            handleCallRinging(event);                                                  break;
+      case CALL_CONNECTED:          handleCallConnected();                                                     break;
+      case NETWORK_FAILURE:         handleServerFailure();                                                     break;
+      case CALL_RINGING:            handleCallRinging();                                                       break;
       case CALL_DISCONNECTED:       handleTerminate(event.getRecipient(), HangupMessage.Type.NORMAL);          break;
       case CALL_ACCEPTED_ELSEWHERE: handleTerminate(event.getRecipient(), HangupMessage.Type.ACCEPTED);        break;
       case CALL_DECLINED_ELSEWHERE: handleTerminate(event.getRecipient(), HangupMessage.Type.DECLINED);        break;
       case CALL_ONGOING_ELSEWHERE:  handleTerminate(event.getRecipient(), HangupMessage.Type.BUSY);            break;
       case CALL_NEEDS_PERMISSION:   handleTerminate(event.getRecipient(), HangupMessage.Type.NEED_PERMISSION); break;
       case NO_SUCH_USER:            handleNoSuchUser(event);                                                   break;
-      case RECIPIENT_UNAVAILABLE:   handleRecipientUnavailable(event);                                         break;
-      case CALL_INCOMING:           handleIncomingCall(event);                                                 break;
-      case CALL_OUTGOING:           handleOutgoingCall(event);                                                 break;
-      case CALL_BUSY:               handleCallBusy(event);                                                     break;
+      case RECIPIENT_UNAVAILABLE:   handleRecipientUnavailable();                                              break;
+      case CALL_OUTGOING:           handleOutgoingCall();                                                      break;
+      case CALL_BUSY:               handleCallBusy();                                                          break;
       case UNTRUSTED_IDENTITY:      handleUntrustedIdentity(event);                                            break;
     }
 
-    callScreen.setLocalRenderer(event.getLocalRenderer());
-    callScreen.setRemoteRenderer(event.getRemoteRenderer());
-
-    boolean enableVideo = event.getLocalCameraState().getCameraCount() > 0 && enableVideoIfAvailable;
+    boolean enableVideo = event.getLocalParticipant().getCameraState().getCameraCount() > 0 && enableVideoIfAvailable;
 
     viewModel.updateFromWebRtcViewModel(event, enableVideo);
 
@@ -530,6 +512,24 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
 
   private final class ControlsListener implements WebRtcCallView.ControlsListener {
 
+    @Override
+    public void onStartCall(boolean isVideoCall) {
+      enableVideoIfAvailable = isVideoCall;
+
+      Intent intent = new Intent(WebRtcCallActivity.this, WebRtcCallService.class);
+      intent.setAction(WebRtcCallService.ACTION_OUTGOING_CALL)
+            .putExtra(WebRtcCallService.EXTRA_REMOTE_PEER, new RemotePeer(viewModel.getRecipient().getId()))
+            .putExtra(WebRtcCallService.EXTRA_OFFER_TYPE, (isVideoCall ? OfferMessage.Type.VIDEO_CALL : OfferMessage.Type.AUDIO_CALL).getCode());
+      startService(intent);
+
+      MessageSender.onMessageSent();
+    }
+
+    @Override
+    public void onCancelStartCall() {
+      finish();
+    }
+
     @Override
     public void onControlsFadeOut() {
       if (videoTooltip != null) {
@@ -594,8 +594,13 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     }
 
     @Override
-    public void onDownCaretPressed() {
+    public void onShowParticipantsList() {
+      CallParticipantsListDialog.show(getSupportFragmentManager());
+    }
 
+    @Override
+    public void onPageChanged(@NonNull CallParticipantsState.SelectedPage page) {
+      viewModel.setIsViewingFocusedParticipant(page);
     }
   }
 

app/src/main/java/org/thoughtcrime/securesms/animation/ResizeAnimation.java

@@ -0,0 +1,50 @@
+package org.thoughtcrime.securesms.animation;
+
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.animation.Animation;
+import android.view.animation.Transformation;
+
+import androidx.annotation.NonNull;
+
+public class ResizeAnimation extends Animation {
+
+  private final View target;
+  private final int  targetWidthPx;
+  private final int  targetHeightPx;
+
+  private int startWidth;
+  private int startHeight;
+
+  public ResizeAnimation(@NonNull View target, int targetWidthPx, int targetHeightPx) {
+    this.target         = target;
+    this.targetWidthPx  = targetWidthPx;
+    this.targetHeightPx = targetHeightPx;
+  }
+
+  @Override
+  protected void applyTransformation(float interpolatedTime, Transformation t) {
+    int newWidth  = (int) (startWidth + (targetWidthPx - startWidth) * interpolatedTime);
+    int newHeight = (int) (startHeight + (targetHeightPx - startHeight) * interpolatedTime);
+
+    ViewGroup.LayoutParams params = target.getLayoutParams();
+
+    params.width  = newWidth;
+    params.height = newHeight;
+
+    target.setLayoutParams(params);
+  }
+
+  @Override
+  public void initialize(int width, int height, int parentWidth, int parentHeight) {
+    super.initialize(width, height, parentWidth, parentHeight);
+
+    this.startWidth  = width;
+    this.startHeight = height;
+  }
+
+  @Override
+  public boolean willChangeBounds() {
+    return true;
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/attachments/Attachment.java

@@ -106,10 +106,7 @@ public abstract class Attachment {
   }
 
   @Nullable
-  public abstract Uri getDataUri();
-
-  @Nullable
-  public abstract Uri getThumbnailUri();
+  public abstract Uri getUri();
 
   public int getTransferState() {
     return transferState;

app/src/main/java/org/thoughtcrime/securesms/attachments/DatabaseAttachment.java

@@ -57,7 +57,7 @@ public class DatabaseAttachment extends Attachment {
 
   @Override
   @Nullable
-  public Uri getDataUri() {
+  public Uri getUri() {
     if (hasData) {
       return PartAuthority.getAttachmentDataUri(attachmentId);
     } else {
@@ -65,16 +65,6 @@ public class DatabaseAttachment extends Attachment {
     }
   }
 
-  @Override
-  @Nullable
-  public Uri getThumbnailUri() {
-    if (hasThumbnail) {
-      return PartAuthority.getAttachmentThumbnailUri(attachmentId);
-    } else {
-      return null;
-    }
-  }
-
   public AttachmentId getAttachmentId() {
     return attachmentId;
   }

app/src/main/java/org/thoughtcrime/securesms/attachments/MmsNotificationAttachment.java

@@ -15,13 +15,7 @@ public class MmsNotificationAttachment extends Attachment {
 
   @Nullable
   @Override
-  public Uri getDataUri() {
-    return null;
-  }
-
-  @Nullable
-  @Override
-  public Uri getThumbnailUri() {
+  public Uri getUri() {
     return null;
   }
 

app/src/main/java/org/thoughtcrime/securesms/attachments/PointerAttachment.java

@@ -42,17 +42,10 @@ public class PointerAttachment extends Attachment {
 
   @Nullable
   @Override
-  public Uri getDataUri() {
+  public Uri getUri() {
     return null;
   }
 
-  @Nullable
-  @Override
-  public Uri getThumbnailUri() {
-    return null;
-  }
-
-
   public static List<Attachment> forPointers(Optional<List<SignalServiceAttachment>> pointers) {
     List<Attachment> results = new LinkedList<>();
 

app/src/main/java/org/thoughtcrime/securesms/attachments/TombstoneAttachment.java

@@ -20,12 +20,7 @@ public class TombstoneAttachment extends Attachment {
   }
 
   @Override
-  public @Nullable Uri getDataUri() {
-    return null;
-  }
-
-  @Override
-  public @Nullable Uri getThumbnailUri() {
+  public @Nullable Uri getUri() {
     return null;
   }
 }

app/src/main/java/org/thoughtcrime/securesms/attachments/UriAttachment.java

@@ -13,7 +13,6 @@ import org.thoughtcrime.securesms.stickers.StickerLocator;
 public class UriAttachment extends Attachment {
 
   private final @NonNull  Uri dataUri;
-  private final @Nullable Uri thumbnailUri;
 
   public UriAttachment(@NonNull Uri uri,
                        @NonNull String contentType,
@@ -29,11 +28,10 @@ public class UriAttachment extends Attachment {
                        @Nullable AudioHash audioHash,
                        @Nullable TransformProperties transformProperties)
   {
-    this(uri, uri, contentType, transferState, size, 0, 0, fileName, null, voiceNote, borderless, quote, caption, stickerLocator, blurHash, audioHash, transformProperties);
+    this(uri, contentType, transferState, size, 0, 0, fileName, null, voiceNote, borderless, quote, caption, stickerLocator, blurHash, audioHash, transformProperties);
   }
 
   public UriAttachment(@NonNull Uri dataUri,
-                       @Nullable Uri thumbnailUri,
                        @NonNull String contentType,
                        int transferState,
                        long size,
@@ -51,22 +49,15 @@ public class UriAttachment extends Attachment {
                        @Nullable TransformProperties transformProperties)
   {
     super(contentType, transferState, size, fileName, 0, null, null, null, null, fastPreflightId, voiceNote, borderless, width, height, quote, 0, caption, stickerLocator, blurHash, audioHash, transformProperties);
-    this.dataUri      = dataUri;
-    this.thumbnailUri = thumbnailUri;
+    this.dataUri = dataUri;
   }
 
   @Override
   @NonNull
-  public Uri getDataUri() {
+  public Uri getUri() {
     return dataUri;
   }
 
-  @Override
-  @Nullable
-  public Uri getThumbnailUri() {
-    return thumbnailUri;
-  }
-
   @Override
   public boolean equals(Object other) {
     return other != null && other instanceof UriAttachment && ((UriAttachment) other).dataUri.equals(this.dataUri);

app/src/main/java/org/thoughtcrime/securesms/audio/AudioSlidePlayer.java

@@ -1,378 +0,0 @@
-package org.thoughtcrime.securesms.audio;
-
-import android.content.Context;
-import android.hardware.Sensor;
-import android.hardware.SensorEvent;
-import android.hardware.SensorEventListener;
-import android.hardware.SensorManager;
-import android.media.AudioManager;
-import android.net.Uri;
-import android.os.Build;
-import android.os.Handler;
-import android.os.Message;
-import android.os.PowerManager;
-import android.os.PowerManager.WakeLock;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import android.util.Pair;
-import android.widget.Toast;
-
-import com.google.android.exoplayer2.C;
-import com.google.android.exoplayer2.DefaultLoadControl;
-import com.google.android.exoplayer2.DefaultRenderersFactory;
-import com.google.android.exoplayer2.ExoPlaybackException;
-import com.google.android.exoplayer2.ExoPlayerFactory;
-import com.google.android.exoplayer2.LoadControl;
-import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
-import com.google.android.exoplayer2.audio.AudioAttributes;
-import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory;
-import com.google.android.exoplayer2.extractor.ExtractorsFactory;
-import com.google.android.exoplayer2.source.ExtractorMediaSource;
-import com.google.android.exoplayer2.source.MediaSource;
-import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
-import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
-
-import org.thoughtcrime.securesms.R;
-import org.thoughtcrime.securesms.logging.Log;
-import org.thoughtcrime.securesms.mms.AudioSlide;
-import org.thoughtcrime.securesms.util.ServiceUtil;
-import org.thoughtcrime.securesms.util.Util;
-import org.thoughtcrime.securesms.video.exo.AttachmentDataSourceFactory;
-import org.whispersystems.libsignal.util.guava.Optional;
-
-import java.io.IOException;
-import java.lang.ref.WeakReference;
-
-public class AudioSlidePlayer implements SensorEventListener {
-
-  private static final String TAG = AudioSlidePlayer.class.getSimpleName();
-
-  private static @NonNull Optional<AudioSlidePlayer> playing = Optional.absent();
-
-  private final @NonNull  Context           context;
-  private final @NonNull  AudioSlide        slide;
-  private final @NonNull  Handler           progressEventHandler;
-  private final @NonNull  AudioManager      audioManager;
-  private final @NonNull  SensorManager     sensorManager;
-  private final @NonNull  Sensor            proximitySensor;
-  private final @Nullable WakeLock          wakeLock;
-
-  private @NonNull  WeakReference<Listener> listener;
-  private @Nullable SimpleExoPlayer         mediaPlayer;
-  private           long                    startTime;
-
-  public synchronized static AudioSlidePlayer createFor(@NonNull Context context,
-                                                        @NonNull AudioSlide slide,
-                                                        @NonNull Listener listener)
-  {
-    if (playing.isPresent() && playing.get().getAudioSlide().equals(slide)) {
-      playing.get().setListener(listener);
-      return playing.get();
-    } else {
-      return new AudioSlidePlayer(context, slide, listener);
-    }
-  }
-
-  private AudioSlidePlayer(@NonNull Context context,
-                           @NonNull AudioSlide slide,
-                           @NonNull Listener listener)
-  {
-    this.context              = context;
-    this.slide                = slide;
-    this.listener             = new WeakReference<>(listener);
-    this.progressEventHandler = new ProgressEventHandler(this);
-    this.audioManager         = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
-    this.sensorManager        = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
-    this.proximitySensor      = sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
-
-    if (Build.VERSION.SDK_INT >= 21) {
-      this.wakeLock = ServiceUtil.getPowerManager(context).newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, TAG);
-    } else {
-      this.wakeLock = null;
-    }
-  }
-
-  public void play(final double progress) throws IOException {
-    play(progress, false);
-  }
-
-  private void play(final double progress, boolean earpiece) throws IOException {
-    if (this.mediaPlayer != null) {
-      return;
-    }
-
-    if (slide.getUri() == null) {
-      throw new IOException("Slide has no URI!");
-    }
-
-    LoadControl loadControl = new DefaultLoadControl.Builder().setBufferDurationsMs(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE).createDefaultLoadControl();
-    this.mediaPlayer           = ExoPlayerFactory.newSimpleInstance(context, new DefaultRenderersFactory(context), new DefaultTrackSelector(), loadControl);
-    this.startTime             = System.currentTimeMillis();
-
-    mediaPlayer.prepare(createMediaSource(slide.getUri()));
-    mediaPlayer.setPlayWhenReady(true);
-    mediaPlayer.setAudioAttributes(new AudioAttributes.Builder()
-                                                      .setContentType(earpiece ? C.CONTENT_TYPE_SPEECH : C.CONTENT_TYPE_MUSIC)
-                                                      .setUsage(earpiece ? C.USAGE_VOICE_COMMUNICATION : C.USAGE_MEDIA)
-                                                      .build());
-    mediaPlayer.addListener(new Player.EventListener() {
-
-      boolean started = false;
-
-      @Override
-      public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
-        Log.d(TAG, "onPlayerStateChanged(" + playWhenReady + ", " + playbackState + ")");
-        switch (playbackState) {
-          case Player.STATE_READY:
-            Log.i(TAG, "onPrepared() " + mediaPlayer.getBufferedPercentage() + "% buffered");
-            synchronized (AudioSlidePlayer.this) {
-              if (mediaPlayer == null) return;
-
-              if (started) {
-                Log.d(TAG, "Already started. Ignoring.");
-                return;
-              }
-
-              started = true;
-
-              if (progress > 0) {
-                mediaPlayer.seekTo((long) (mediaPlayer.getDuration() * progress));
-              }
-
-              sensorManager.registerListener(AudioSlidePlayer.this, proximitySensor, SensorManager.SENSOR_DELAY_NORMAL);
-
-              setPlaying(AudioSlidePlayer.this);
-            }
-
-            notifyOnStart();
-            progressEventHandler.sendEmptyMessage(0);
-            break;
-
-          case Player.STATE_ENDED:
-            Log.i(TAG, "onComplete");
-            synchronized (AudioSlidePlayer.this) {
-              mediaPlayer = null;
-
-              sensorManager.unregisterListener(AudioSlidePlayer.this);
-
-              if (wakeLock != null && wakeLock.isHeld()) {
-                if (Build.VERSION.SDK_INT >= 21) {
-                  wakeLock.release(PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
-                }
-              }
-            }
-
-            notifyOnStop();
-            progressEventHandler.removeMessages(0);
-        }
-      }
-
-      @Override
-      public void onPlayerError(ExoPlaybackException error) {
-        Log.w(TAG, "MediaPlayer Error: " + error);
-
-        Toast.makeText(context, R.string.AudioSlidePlayer_error_playing_audio, Toast.LENGTH_SHORT).show();
-
-        synchronized (AudioSlidePlayer.this) {
-          mediaPlayer = null;
-
-          sensorManager.unregisterListener(AudioSlidePlayer.this);
-
-          if (wakeLock != null && wakeLock.isHeld()) {
-            if (Build.VERSION.SDK_INT >= 21) {
-              wakeLock.release(PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
-            }
-          }
-        }
-
-        notifyOnStop();
-        progressEventHandler.removeMessages(0);
-      }
-    });
-  }
-
-  private MediaSource createMediaSource(@NonNull Uri uri) {
-    DefaultDataSourceFactory    defaultDataSourceFactory    = new DefaultDataSourceFactory(context, "GenericUserAgent", null);
-    AttachmentDataSourceFactory attachmentDataSourceFactory = new AttachmentDataSourceFactory(context, defaultDataSourceFactory, null);
-    ExtractorsFactory           extractorsFactory           = new DefaultExtractorsFactory().setConstantBitrateSeekingEnabled(true);
-
-    return new ExtractorMediaSource.Factory(attachmentDataSourceFactory)
-                                   .setExtractorsFactory(extractorsFactory)
-                                   .createMediaSource(uri);
-  }
-
-  public synchronized void stop() {
-    Log.i(TAG, "Stop called!");
-
-    removePlaying(this);
-
-    if (this.mediaPlayer != null) {
-      this.mediaPlayer.stop();
-      this.mediaPlayer.release();
-    }
-
-    sensorManager.unregisterListener(AudioSlidePlayer.this);
-
-    this.mediaPlayer = null;
-  }
-
-  public synchronized static void stopAll() {
-    if (playing.isPresent()) {
-      playing.get().stop();
-    }
-  }
-
-  public void setListener(@NonNull Listener listener) {
-    this.listener = new WeakReference<>(listener);
-
-    if (this.mediaPlayer != null && this.mediaPlayer.getPlaybackState() == Player.STATE_READY) {
-      notifyOnStart();
-    }
-  }
-
-  public @NonNull AudioSlide getAudioSlide() {
-    return slide;
-  }
-
-
-  private Pair<Double, Integer> getProgress() {
-    if (mediaPlayer == null || mediaPlayer.getCurrentPosition() <= 0 || mediaPlayer.getDuration() <= 0) {
-      return new Pair<>(0D, 0);
-    } else {
-      return new Pair<>((double) mediaPlayer.getCurrentPosition() / (double) mediaPlayer.getDuration(),
-                        (int) mediaPlayer.getCurrentPosition());
-    }
-  }
-
-  private void notifyOnStart() {
-    Util.runOnMain(new Runnable() {
-      @Override
-      public void run() {
-        getListener().onStart();
-      }
-    });
-  }
-
-  private void notifyOnStop() {
-    Util.runOnMain(new Runnable() {
-      @Override
-      public void run() {
-        getListener().onStop();
-      }
-    });
-  }
-
-  private void notifyOnProgress(final double progress, final long millis) {
-    Util.runOnMain(new Runnable() {
-      @Override
-      public void run() {
-        getListener().onProgress(progress, millis);
-      }
-    });
-  }
-
-  private @NonNull Listener getListener() {
-    Listener listener = this.listener.get();
-
-    if (listener != null) return listener;
-    else                  return new Listener() {
-      @Override
-      public void onStart() {}
-      @Override
-      public void onStop() {}
-      @Override
-      public void onProgress(double progress, long millis) {}
-    };
-  }
-
-  private synchronized static void setPlaying(@NonNull AudioSlidePlayer player) {
-    if (playing.isPresent() && playing.get() != player) {
-      playing.get().notifyOnStop();
-      playing.get().stop();
-    }
-
-    playing = Optional.of(player);
-  }
-
-  private synchronized static void removePlaying(@NonNull AudioSlidePlayer player) {
-    if (playing.isPresent() && playing.get() == player) {
-      playing = Optional.absent();
-    }
-  }
-
-  @Override
-  public void onSensorChanged(SensorEvent event) {
-    if (event.sensor.getType() != Sensor.TYPE_PROXIMITY) return;
-    if (mediaPlayer == null || mediaPlayer.getPlaybackState() != Player.STATE_READY) return;
-
-    int streamType;
-
-    if (event.values[0] < 5f && event.values[0] != proximitySensor.getMaximumRange()) {
-      streamType = AudioManager.STREAM_VOICE_CALL;
-    } else {
-      streamType = AudioManager.STREAM_MUSIC;
-    }
-
-    if (streamType == AudioManager.STREAM_VOICE_CALL &&
-        mediaPlayer.getAudioStreamType() != streamType &&
-        !audioManager.isWiredHeadsetOn())
-    {
-      double position = mediaPlayer.getCurrentPosition();
-      double duration = mediaPlayer.getDuration();
-      double progress = position / duration;
-
-      if (wakeLock != null) wakeLock.acquire();
-      stop();
-      try {
-        play(progress, true);
-      } catch (IOException e) {
-        Log.w(TAG, e);
-      }
-    } else if (streamType == AudioManager.STREAM_MUSIC &&
-               mediaPlayer.getAudioStreamType() != streamType &&
-               System.currentTimeMillis() - startTime > 500)
-    {
-      if (wakeLock != null) wakeLock.release();
-      stop();
-      notifyOnStop();
-    }
-  }
-
-  @Override
-  public void onAccuracyChanged(Sensor sensor, int accuracy) {
-
-  }
-
-  public interface Listener {
-    void onStart();
-    void onStop();
-    void onProgress(double progress, long millis);
-  }
-
-  private static class ProgressEventHandler extends Handler {
-
-    private final WeakReference<AudioSlidePlayer> playerReference;
-
-    private ProgressEventHandler(@NonNull AudioSlidePlayer player) {
-      this.playerReference = new WeakReference<>(player);
-    }
-
-    @Override
-    public void handleMessage(Message msg) {
-      AudioSlidePlayer player = playerReference.get();
-
-      if (player == null || player.mediaPlayer == null || !isPlayerActive(player.mediaPlayer)) {
-        return;
-      }
-
-      Pair<Double, Integer> progress = player.getProgress();
-      player.notifyOnProgress(progress.first, progress.second);
-      sendEmptyMessageDelayed(0, 50);
-    }
-
-    private boolean isPlayerActive(@NonNull SimpleExoPlayer player) {
-      return player.getPlaybackState() == Player.STATE_READY || player.getPlaybackState() == Player.STATE_BUFFERING;
-    }
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/backup/BackupDialog.java

@@ -4,6 +4,8 @@ package org.thoughtcrime.securesms.backup;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.Button;
@@ -13,10 +15,15 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AlertDialog;
+import androidx.fragment.app.Fragment;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.components.SwitchPreferenceCompat;
+import org.thoughtcrime.securesms.keyvalue.SignalStore;
+import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.registration.fragments.RestoreBackupFragment;
 import org.thoughtcrime.securesms.service.LocalBackupListener;
 import org.thoughtcrime.securesms.util.BackupUtil;
@@ -24,27 +31,53 @@ import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.text.AfterTextChanged;
 
+import java.util.Objects;
+
 public class BackupDialog {
 
-  public static void showEnableBackupDialog(@NonNull Context context, @NonNull SwitchPreferenceCompat preference) {
+  private static final String TAG = Log.tag(BackupDialog.class);
+
+  public static void showEnableBackupDialog(@NonNull Context context,
+                                            @Nullable Intent backupDirectorySelectionIntent,
+                                            @Nullable String backupDirectoryDisplayName,
+                                            @NonNull Runnable onBackupsEnabled)
+  {
     String[]    password = BackupUtil.generateBackupPassphrase();
     AlertDialog dialog   = new AlertDialog.Builder(context)
                                           .setTitle(R.string.BackupDialog_enable_local_backups)
-                                          .setView(R.layout.backup_enable_dialog)
+                                          .setView(backupDirectorySelectionIntent != null ? R.layout.backup_enable_dialog_v29 : R.layout.backup_enable_dialog)
                                           .setPositiveButton(R.string.BackupDialog_enable_backups, null)
                                           .setNegativeButton(android.R.string.cancel, null)
                                           .create();
 
     dialog.setOnShowListener(created -> {
+      if (backupDirectoryDisplayName != null) {
+        TextView folderName = dialog.findViewById(R.id.backup_enable_dialog_folder_name);
+        if (folderName != null) {
+          folderName.setText(backupDirectoryDisplayName);
+        }
+      }
+
       Button button = ((AlertDialog) created).getButton(AlertDialog.BUTTON_POSITIVE);
       button.setOnClickListener(v -> {
         CheckBox confirmationCheckBox = dialog.findViewById(R.id.confirmation_check);
         if (confirmationCheckBox.isChecked()) {
+          if (backupDirectorySelectionIntent != null && backupDirectorySelectionIntent.getData() != null) {
+            Uri backupDirectoryUri = backupDirectorySelectionIntent.getData();
+            int takeFlags          = Intent.FLAG_GRANT_READ_URI_PERMISSION |
+                                     Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
+
+            SignalStore.settings().setSignalBackupDirectory(backupDirectoryUri);
+            context.getContentResolver()
+                   .takePersistableUriPermission(backupDirectoryUri, takeFlags);
+          }
+
           BackupPassphrase.set(context, Util.join(password, " "));
+          TextSecurePreferences.setNextBackupTime(context, 0);
           TextSecurePreferences.setBackupEnabled(context, true);
           LocalBackupListener.schedule(context);
 
-          preference.setChecked(true);
+          onBackupsEnabled.run();
           created.dismiss();
         } else {
           Toast.makeText(context, R.string.BackupDialog_please_acknowledge_your_understanding_by_marking_the_confirmation_check_box, Toast.LENGTH_LONG).show();
@@ -75,16 +108,38 @@ public class BackupDialog {
 
   }
 
-  public static void showDisableBackupDialog(@NonNull Context context, @NonNull SwitchPreferenceCompat preference) {
+  @RequiresApi(29)
+  public static void showChooseBackupLocationDialog(@NonNull Fragment fragment, int requestCode) {
+    new AlertDialog.Builder(fragment.requireContext())
+                   .setView(R.layout.backup_choose_location_dialog)
+                   .setCancelable(true)
+                   .setNegativeButton(android.R.string.cancel, (dialog, which) -> {
+                     dialog.dismiss();
+                   })
+                   .setPositiveButton(R.string.BackupDialog_choose_folder, ((dialog, which) -> {
+                     Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
+
+                     intent.addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION |
+                                     Intent.FLAG_GRANT_WRITE_URI_PERMISSION       |
+                                     Intent.FLAG_GRANT_READ_URI_PERMISSION);
+
+                     fragment.startActivityForResult(intent, requestCode);
+
+                     dialog.dismiss();
+                   }))
+                   .create()
+                   .show();
+  }
+
+  public static void showDisableBackupDialog(@NonNull Context context, @NonNull Runnable onBackupsDisabled) {
     new AlertDialog.Builder(context)
                    .setTitle(R.string.BackupDialog_delete_backups)
                    .setMessage(R.string.BackupDialog_disable_and_delete_all_local_backups)
                    .setNegativeButton(android.R.string.cancel, null)
                    .setPositiveButton(R.string.BackupDialog_delete_backups_statement, (dialog, which) -> {
-                     BackupPassphrase.set(context, null);
-                     TextSecurePreferences.setBackupEnabled(context, false);
-                     BackupUtil.deleteAllBackups();
-                     preference.setChecked(false);
+                     BackupUtil.disableBackups(context);
+
+                     onBackupsDisabled.run();
                    })
                    .create()
                    .show();

app/src/main/java/org/thoughtcrime/securesms/backup/FullBackupExporter.java

@@ -3,9 +3,12 @@ package org.thoughtcrime.securesms.backup;
 
 import android.content.Context;
 import android.database.Cursor;
+import android.text.TextUtils;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import android.text.TextUtils;
+import androidx.annotation.RequiresApi;
+import androidx.documentfile.provider.DocumentFile;
 
 import com.annimon.stream.function.Consumer;
 import com.annimon.stream.function.Predicate;
@@ -50,6 +53,7 @@ import java.security.InvalidKeyException;
 import java.security.NoSuchAlgorithmException;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Objects;
 import java.util.Set;
 
 import javax.crypto.BadPaddingException;
@@ -84,7 +88,32 @@ public class FullBackupExporter extends FullBackupBase {
                             @NonNull String passphrase)
       throws IOException
   {
-    BackupFrameOutputStream outputStream = new BackupFrameOutputStream(output, passphrase);
+    try (OutputStream outputStream = new FileOutputStream(output)) {
+      internalExport(context, attachmentSecret, input, outputStream, passphrase);
+    }
+  }
+
+  @RequiresApi(29)
+  public static void export(@NonNull Context context,
+                            @NonNull AttachmentSecret attachmentSecret,
+                            @NonNull SQLiteDatabase input,
+                            @NonNull DocumentFile output,
+                            @NonNull String passphrase)
+      throws IOException
+  {
+    try (OutputStream outputStream = Objects.requireNonNull(context.getContentResolver().openOutputStream(output.getUri()))) {
+      internalExport(context, attachmentSecret, input, outputStream, passphrase);
+    }
+  }
+
+  private static void internalExport(@NonNull Context context,
+                                     @NonNull AttachmentSecret attachmentSecret,
+                                     @NonNull SQLiteDatabase input,
+                                     @NonNull OutputStream fileOutputStream,
+                                     @NonNull String passphrase)
+      throws IOException
+  {
+    BackupFrameOutputStream outputStream = new BackupFrameOutputStream(fileOutputStream, passphrase);
     int                     count        = 0;
 
     try {
@@ -322,7 +351,7 @@ public class FullBackupExporter extends FullBackupBase {
     private byte[] iv;
     private int    counter;
 
-    private BackupFrameOutputStream(@NonNull File output, @NonNull String passphrase) throws IOException {
+    private BackupFrameOutputStream(@NonNull OutputStream output, @NonNull String passphrase) throws IOException {
       try {
         byte[]   salt    = Util.getSecretBytes(32);
         byte[]   key     = getBackupKey(passphrase, salt);
@@ -334,7 +363,7 @@ public class FullBackupExporter extends FullBackupBase {
 
         this.cipher       = Cipher.getInstance("AES/CTR/NoPadding");
         this.mac          = Mac.getInstance("HmacSHA256");
-        this.outputStream = new FileOutputStream(output);
+        this.outputStream = output;
         this.iv           = Util.getSecretBytes(16);
         this.counter      = Conversions.byteArrayToInt(iv);
 

app/src/main/java/org/thoughtcrime/securesms/backup/FullBackupImporter.java

@@ -6,9 +6,11 @@ import android.content.ContentValues;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.database.Cursor;
-import androidx.annotation.NonNull;
+import android.net.Uri;
 import android.util.Pair;
 
+import androidx.annotation.NonNull;
+
 import net.sqlcipher.database.SQLiteDatabase;
 
 import org.greenrobot.eventbus.EventBus;
@@ -25,8 +27,8 @@ import org.thoughtcrime.securesms.database.SearchDatabase;
 import org.thoughtcrime.securesms.database.StickerDatabase;
 import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.profiles.AvatarHelper;
-import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
+import org.thoughtcrime.securesms.util.BackupUtil;
 import org.thoughtcrime.securesms.util.Conversions;
 import org.thoughtcrime.securesms.util.SqlUtil;
 import org.thoughtcrime.securesms.util.Util;
@@ -36,7 +38,6 @@ import org.whispersystems.libsignal.util.ByteUtil;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -46,6 +47,7 @@ import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Objects;
 
 import javax.crypto.BadPaddingException;
 import javax.crypto.Cipher;
@@ -61,13 +63,14 @@ public class FullBackupImporter extends FullBackupBase {
   private static final String TAG = FullBackupImporter.class.getSimpleName();
 
   public static void importFile(@NonNull Context context, @NonNull AttachmentSecret attachmentSecret,
-                                @NonNull SQLiteDatabase db, @NonNull File file, @NonNull String passphrase)
+                                @NonNull SQLiteDatabase db, @NonNull Uri uri, @NonNull String passphrase)
       throws IOException
   {
-    BackupRecordInputStream inputStream = new BackupRecordInputStream(file, passphrase);
-    int                     count       = 0;
+    int count = 0;
+
+    try (InputStream is = getInputStream(context, uri)) {
+      BackupRecordInputStream inputStream = new BackupRecordInputStream(is, passphrase);
 
-    try {
       db.beginTransaction();
 
       dropAllTables(db);
@@ -93,6 +96,14 @@ public class FullBackupImporter extends FullBackupBase {
     EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.FINISHED, count));
   }
 
+  private static @NonNull InputStream getInputStream(@NonNull Context context, @NonNull Uri uri) throws IOException{
+    if (BackupUtil.isUserSelectionRequired(context)) {
+      return Objects.requireNonNull(context.getContentResolver().openInputStream(uri));
+    } else {
+      return new FileInputStream(new File(Objects.requireNonNull(uri.getPath())));
+    }
+  }
+
   private static void processVersion(@NonNull SQLiteDatabase db, DatabaseVersion version) throws IOException {
     if (version.getVersion() > db.getVersion()) {
       throw new DatabaseDowngradeException(db.getVersion(), version.getVersion());
@@ -138,13 +149,11 @@ public class FullBackupImporter extends FullBackupBase {
       inputStream.readAttachmentTo(output.second, attachment.getLength());
 
       contentValues.put(AttachmentDatabase.DATA, dataFile.getAbsolutePath());
-      contentValues.put(AttachmentDatabase.THUMBNAIL, (String)null);
       contentValues.put(AttachmentDatabase.DATA_RANDOM, output.first);
     } catch (BadMacException e) {
       Log.w(TAG, "Bad MAC for attachment " + attachment.getAttachmentId() + "! Can't restore it.", e);
       dataFile.delete();
       contentValues.put(AttachmentDatabase.DATA, (String) null);
-      contentValues.put(AttachmentDatabase.THUMBNAIL, (String) null);
       contentValues.put(AttachmentDatabase.DATA_RANDOM, (String) null);
     }
 
@@ -223,9 +232,9 @@ public class FullBackupImporter extends FullBackupBase {
     private byte[] iv;
     private int    counter;
 
-    private BackupRecordInputStream(@NonNull File file, @NonNull String passphrase) throws IOException {
+    private BackupRecordInputStream(@NonNull InputStream in, @NonNull String passphrase) throws IOException {
       try {
-        this.in     = new FileInputStream(file);
+        this.in = in;
 
         byte[] headerLengthBytes = new byte[4];
         Util.readFully(in, headerLengthBytes);

app/src/main/java/org/thoughtcrime/securesms/color/MaterialColor.java

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.color;
 
 import android.content.Context;
+import android.content.res.Configuration;
 import android.graphics.Color;
 
 import androidx.annotation.ColorInt;
@@ -8,6 +9,7 @@ import androidx.annotation.ColorRes;
 import androidx.annotation.NonNull;
 
 import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.util.ThemeUtil;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -68,6 +70,11 @@ public enum MaterialColor {
     this.serialized = serialized;
   }
 
+  public @ColorInt int toNotificationColor(@NonNull Context context) {
+    final boolean isDark = ThemeUtil.isDarkNotificationTheme(context);
+    return context.getResources().getColor(isDark ? shadeColor : mainColor);
+  }
+
   public @ColorInt int toConversationColor(@NonNull Context context) {
     return context.getResources().getColor(mainColor);
   }

app/src/main/java/org/thoughtcrime/securesms/components/AudioView.java

@@ -5,6 +5,7 @@ import android.content.res.TypedArray;
 import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.graphics.Rect;
+import android.net.Uri;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
@@ -16,6 +17,8 @@ import android.widget.TextView;
 import androidx.annotation.ColorInt;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.core.util.Consumer;
+import androidx.lifecycle.Observer;
 
 import com.airbnb.lottie.LottieAnimationView;
 import com.airbnb.lottie.LottieProperty;
@@ -28,19 +31,17 @@ import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
 import org.greenrobot.eventbus.ThreadMode;
 import org.thoughtcrime.securesms.R;
-import org.thoughtcrime.securesms.audio.AudioSlidePlayer;
 import org.thoughtcrime.securesms.audio.AudioWaveForm;
+import org.thoughtcrime.securesms.components.voice.VoiceNotePlaybackState;
 import org.thoughtcrime.securesms.database.AttachmentDatabase;
 import org.thoughtcrime.securesms.events.PartProgressEvent;
-import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.mms.AudioSlide;
 import org.thoughtcrime.securesms.mms.SlideClickListener;
 
-import java.io.IOException;
 import java.util.Objects;
 import java.util.concurrent.TimeUnit;
 
-public final class AudioView extends FrameLayout implements AudioSlidePlayer.Listener {
+public final class AudioView extends FrameLayout {
 
   private static final String TAG = AudioView.class.getSimpleName();
 
@@ -62,11 +63,14 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
   @ColorInt private final int waveFormUnplayedBarsColor;
 
   @Nullable private SlideClickListener downloadListener;
-  @Nullable private AudioSlidePlayer   audioSlidePlayer;
             private int                backwardsCounter;
             private int                lottieDirection;
             private boolean            isPlaying;
             private long               durationMillis;
+            private AudioSlide         audioSlide;
+            private Callbacks          callbacks;
+
+  private final Observer<VoiceNotePlaybackState> playbackStateObserver = this::onPlaybackState;
 
   public AudioView(Context context) {
     this(context, null);
@@ -122,11 +126,18 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
     EventBus.getDefault().unregister(this);
   }
 
+  public Observer<VoiceNotePlaybackState> getPlaybackStateObserver() {
+    return playbackStateObserver;
+  }
+
   public void setAudio(final @NonNull AudioSlide audio,
+                       final @Nullable Callbacks callbacks,
                        final boolean showControls)
   {
+    this.callbacks = callbacks;
+
     if (seekBar instanceof WaveFormSeekBarView) {
-      if (audioSlidePlayer != null && !Objects.equals(audioSlidePlayer.getAudioSlide().getUri(), audio.getUri())) {
+      if (audioSlide != null && !Objects.equals(audioSlide.getUri(), audio.getUri())) {
        WaveFormSeekBarView waveFormView = (WaveFormSeekBarView) seekBar;
        waveFormView.setWaveMode(false);
        seekBar.setProgress(0);
@@ -147,12 +158,9 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
       seekBar.setEnabled(true);
       if (circleProgress.isSpinning()) circleProgress.stopSpinning();
       showPlayButton();
-      lottieDirection = REVERSE;
-      playPauseButton.cancelAnimation();
-      playPauseButton.setFrame(0);
     }
 
-    this.audioSlidePlayer = AudioSlidePlayer.createFor(getContext(), audio, this);
+    this.audioSlide = audio;
 
     if (seekBar instanceof WaveFormSeekBarView) {
       WaveFormSeekBarView waveFormView = (WaveFormSeekBarView) seekBar;
@@ -177,28 +185,47 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
     }
   }
 
-  public void cleanup() {
-    if (this.audioSlidePlayer != null && isPlaying) {
-      this.audioSlidePlayer.stop();
-    }
-  }
-
   public void setDownloadClickListener(@Nullable SlideClickListener listener) {
     this.downloadListener = listener;
   }
 
-  @Override
-  public void onStart() {
+  private void onPlaybackState(@NonNull VoiceNotePlaybackState voiceNotePlaybackState) {
+    onStart(voiceNotePlaybackState.getUri(), voiceNotePlaybackState.isAutoReset());
+    onProgress(voiceNotePlaybackState.getUri(),
+               (double) voiceNotePlaybackState.getPlayheadPositionMillis() / voiceNotePlaybackState.getTrackDuration(),
+               voiceNotePlaybackState.getPlayheadPositionMillis());
+  }
+
+  private void onStart(@NonNull Uri uri, boolean autoReset) {
+    if (!Objects.equals(uri, audioSlide.getUri())) {
+      if (audioSlide != null && audioSlide.getUri() != null) {
+        onStop(audioSlide.getUri(), autoReset);
+      }
+
+      return;
+    }
+
+    if (isPlaying) {
+      return;
+    }
+
     isPlaying = true;
     togglePlayToPause();
   }
 
-  @Override
-  public void onStop() {
+  private void onStop(@NonNull Uri uri, boolean autoReset) {
+    if (!Objects.equals(uri, audioSlide.getUri())) {
+      return;
+    }
+
+    if (!isPlaying) {
+      return;
+    }
+
     isPlaying = false;
     togglePauseToPlay();
 
-    if (autoRewind || seekBar.getProgress() + 5 >= seekBar.getMax()) {
+    if (autoReset || autoRewind || seekBar.getProgress() + 5 >= seekBar.getMax()) {
       backwardsCounter = 4;
       rewind();
     }
@@ -230,8 +257,11 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
     this.downloadButton.setEnabled(enabled);
   }
 
-  @Override
-  public void onProgress(double progress, long millis) {
+  private void onProgress(@NonNull Uri uri, double progress, long millis) {
+    if (audioSlide == null || !Objects.equals(uri, audioSlide.getUri())) {
+      return;
+    }
+
     int seekProgress = (int) Math.floor(progress * seekBar.getMax());
 
     if (seekProgress > seekBar.getProgress() || backwardsCounter > 3) {
@@ -312,37 +342,27 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
   }
 
   public void stopPlaybackAndReset() {
-    if (this.audioSlidePlayer != null && isPlaying) {
-      this.audioSlidePlayer.stop();
-      togglePauseToPlay();
+    if (audioSlide == null || audioSlide.getUri() == null) return;
+
+    if (callbacks != null) {
+      callbacks.onStopAndReset(audioSlide.getUri());
+      rewind();
     }
-    rewind();
   }
 
   private class PlayPauseClickedListener implements View.OnClickListener {
 
     @Override
     public void onClick(View v) {
-      if (lottieDirection == REVERSE) {
-        try {
-          Log.d(TAG, "playbutton onClick");
-          if (audioSlidePlayer != null) {
-            togglePlayToPause();
-            audioSlidePlayer.play(getProgress());
-          }
-        } catch (IOException e) {
-          Log.w(TAG, e);
+      if (audioSlide == null || audioSlide.getUri() == null) return;
+
+      if (callbacks != null) {
+        if (lottieDirection == REVERSE) {
+          callbacks.onPlay(audioSlide.getUri(), getProgress());
+        } else {
+          callbacks.onPause(audioSlide.getUri());
         }
-      } else {
-        Log.d(TAG, "pausebutton onClick");
-        if (audioSlidePlayer != null) {
-          togglePauseToPlay();
-          audioSlidePlayer.stop();
-          if (autoRewind) {
-            rewind();
-          }
-        }
-      }
+      };
     }
   }
 
@@ -370,28 +390,28 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
 
     @Override
     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-      if (fromUser && durationMillis > 0) {
-        float progressFloat = progress / (float) seekBar.getMax();
-        updateProgress(progressFloat, (long) (durationMillis * progressFloat));
-      }
     }
 
     @Override
     public synchronized void onStartTrackingTouch(SeekBar seekBar) {
+      if (audioSlide == null || audioSlide.getUri() == null) return;
+
       wasPlaying = isPlaying;
-      if (audioSlidePlayer != null && isPlaying) {
-        audioSlidePlayer.stop();
+      if (isPlaying) {
+        if (callbacks != null) {
+          callbacks.onPause(audioSlide.getUri());
+        }
       }
     }
 
     @Override
     public synchronized void onStopTrackingTouch(SeekBar seekBar) {
-      try {
-        if (audioSlidePlayer != null && wasPlaying) {
-          audioSlidePlayer.play(getProgress());
+      if (audioSlide == null || audioSlide.getUri() == null) return;
+
+      if (callbacks != null) {
+        if (wasPlaying) {
+          callbacks.onSeekTo(audioSlide.getUri(), getProgress());
         }
-      } catch (IOException e) {
-        Log.w(TAG, e);
       }
     }
   }
@@ -405,9 +425,15 @@ public final class AudioView extends FrameLayout implements AudioSlidePlayer.Lis
 
   @Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
   public void onEventAsync(final PartProgressEvent event) {
-    if (audioSlidePlayer != null && event.attachment.equals(audioSlidePlayer.getAudioSlide().asAttachment())) {
+    if (audioSlide != null && event.attachment.equals(audioSlide.asAttachment())) {
       circleProgress.setInstantProgress(((float) event.progress) / event.total);
     }
   }
 
+  public interface Callbacks {
+    void onPlay(@NonNull Uri audioUri, double progress);
+    void onPause(@NonNull Uri audioUri);
+    void onSeekTo(@NonNull Uri audioUri, double progress);
+    void onStopAndReset(@NonNull Uri audioUri);
+  }
 }

app/src/main/java/org/thoughtcrime/securesms/components/BorderlessImageView.java

@@ -54,7 +54,7 @@ public class BorderlessImageView extends FrameLayout {
   }
 
   public void setSlide(@NonNull GlideRequests glideRequests, @NonNull Slide slide) {
-    boolean showControls = slide.asAttachment().getDataUri() == null;
+    boolean showControls = slide.asAttachment().getUri() == null;
 
     if (slide.hasSticker()) {
       image.setFit(new CenterInside());

app/src/main/java/org/thoughtcrime/securesms/components/ComposeText.java

@@ -46,7 +46,8 @@ import static org.thoughtcrime.securesms.database.MentionUtil.MENTION_STARTER;
 
 public class ComposeText extends EmojiEditText {
 
-  private CharSequence            combinedHint;
+  private CharSequence            hint;
+  private SpannableString         subHint;
   private MentionRendererDelegate mentionRendererDelegate;
   private MentionValidatorWatcher mentionValidatorWatcher;
 
@@ -84,8 +85,14 @@ public class ComposeText extends EmojiEditText {
   protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
     super.onLayout(changed, left, top, right, bottom);
 
-    if (!TextUtils.isEmpty(combinedHint)) {
-      setHint(combinedHint);
+    if (!TextUtils.isEmpty(hint)) {
+      if (!TextUtils.isEmpty(subHint)) {
+        setHint(new SpannableStringBuilder().append(ellipsizeToWidth(hint))
+                                            .append("\n")
+                                            .append(ellipsizeToWidth(subHint)));
+      } else {
+        setHint(ellipsizeToWidth(hint));
+      }
     }
   }
 
@@ -93,7 +100,7 @@ public class ComposeText extends EmojiEditText {
   protected void onSelectionChanged(int selectionStart, int selectionEnd) {
     super.onSelectionChanged(selectionStart, selectionEnd);
 
-    if (FeatureFlags.mentions() && getText() != null) {
+    if (getText() != null) {
       boolean selectionChanged = changeSelectionForPartialMentions(getText(), selectionStart, selectionEnd);
       if (selectionChanged) {
         return;
@@ -143,18 +150,24 @@ public class ComposeText extends EmojiEditText {
   }
 
   public void setHint(@NonNull String hint, @Nullable CharSequence subHint) {
-    if (subHint != null) {
-      Spannable subHintSpannable = new SpannableString(subHint);
-      subHintSpannable.setSpan(new RelativeSizeSpan(0.5f), 0, subHintSpannable.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
+    this.hint = hint;
 
-      combinedHint = new SpannableStringBuilder().append(ellipsizeToWidth(hint))
-                                                 .append("\n")
-                                                 .append(ellipsizeToWidth(subHintSpannable));
+    if (subHint != null) {
+      this.subHint = new SpannableString(subHint);
+      this.subHint.setSpan(new RelativeSizeSpan(0.5f), 0, subHint.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
     } else {
-      combinedHint = ellipsizeToWidth(hint);
+      this.subHint = null;
     }
 
-    super.setHint(combinedHint);
+    if (this.subHint != null) {
+      super.setHint(new SpannableStringBuilder().append(ellipsizeToWidth(this.hint))
+                                                .append("\n")
+                                                .append(ellipsizeToWidth(this.subHint)));
+    } else {
+      super.setHint(ellipsizeToWidth(this.hint));
+    }
+
+    super.setHint(hint);
   }
 
   public void appendInvite(String invite) {
@@ -179,9 +192,7 @@ public class ComposeText extends EmojiEditText {
   }
 
   public void setMentionValidator(@Nullable MentionValidatorWatcher.MentionValidator mentionValidator) {
-    if (FeatureFlags.mentions()) {
-      mentionValidatorWatcher.setMentionValidator(mentionValidator);
-    }
+    mentionValidatorWatcher.setMentionValidator(mentionValidator);
   }
 
   private boolean isLandscape() {
@@ -248,11 +259,9 @@ public class ComposeText extends EmojiEditText {
 
     mentionRendererDelegate = new MentionRendererDelegate(getContext(), ThemeUtil.getThemedColor(getContext(), R.attr.conversation_mention_background_color));
 
-    if (FeatureFlags.mentions()) {
-      addTextChangedListener(new MentionDeleter());
-      mentionValidatorWatcher = new MentionValidatorWatcher();
-      addTextChangedListener(mentionValidatorWatcher);
-    }
+    addTextChangedListener(new MentionDeleter());
+    mentionValidatorWatcher = new MentionValidatorWatcher();
+    addTextChangedListener(mentionValidatorWatcher);
   }
 
   private boolean changeSelectionForPartialMentions(@NonNull Spanned spanned, int selectionStart, int selectionEnd) {

app/src/main/java/org/thoughtcrime/securesms/components/ConversationItemFooter.java

@@ -35,6 +35,7 @@ public class ConversationItemFooter extends LinearLayout {
   private ExpirationTimerView timerView;
   private ImageView           insecureIndicatorView;
   private DeliveryStatusView  deliveryStatusView;
+  private boolean             onlyShowSendingStatus;
 
   public ConversationItemFooter(Context context) {
     super(context);
@@ -93,6 +94,11 @@ public class ConversationItemFooter extends LinearLayout {
     deliveryStatusView.setTint(color);
   }
 
+  public void setOnlyShowSendingStatus(boolean onlyShowSending, MessageRecord messageRecord) {
+    this.onlyShowSendingStatus = onlyShowSending;
+    presentDeliveryStatus(messageRecord);
+  }
+
   private void presentDate(@NonNull MessageRecord messageRecord, @NonNull Locale locale) {
     dateView.forceLayout();
     if (messageRecord.isFailed()) {
@@ -173,14 +179,29 @@ public class ConversationItemFooter extends LinearLayout {
   }
 
   private void presentDeliveryStatus(@NonNull MessageRecord messageRecord) {
-    if (!messageRecord.isFailed() && !messageRecord.isPendingInsecureSmsFallback()) {
-      if      (!messageRecord.isOutgoing())  deliveryStatusView.setNone();
-      else if (messageRecord.isPending())    deliveryStatusView.setPending();
-      else if (messageRecord.isRemoteRead()) deliveryStatusView.setRead();
-      else if (messageRecord.isDelivered())  deliveryStatusView.setDelivered();
-      else                                   deliveryStatusView.setSent();
-    } else {
+    if (messageRecord.isFailed() || messageRecord.isPendingInsecureSmsFallback()) {
       deliveryStatusView.setNone();
+      return;
+    }
+
+    if (onlyShowSendingStatus) {
+      if (messageRecord.isOutgoing() && messageRecord.isPending()) {
+        deliveryStatusView.setPending();
+      } else {
+        deliveryStatusView.setNone();
+      }
+    } else {
+      if (!messageRecord.isOutgoing())  {
+        deliveryStatusView.setNone();
+      } else if (messageRecord.isPending()) {
+        deliveryStatusView.setPending();
+      } else if (messageRecord.isRemoteRead()) {
+        deliveryStatusView.setRead();
+      } else if (messageRecord.isDelivered()) {
+        deliveryStatusView.setDelivered();
+      } else {
+        deliveryStatusView.setSent();
+      }
     }
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/FullScreenDialogFragment.java

@@ -0,0 +1,51 @@
+package org.thoughtcrime.securesms.components;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.LayoutRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.StringRes;
+import androidx.appcompat.widget.Toolbar;
+import androidx.fragment.app.DialogFragment;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.util.ThemeUtil;
+
+/**
+ * Base dialog fragment for rendering as a full screen dialog with animation
+ * transitions.
+ */
+public abstract class FullScreenDialogFragment extends DialogFragment {
+
+  protected Toolbar toolbar;
+
+  @Override
+  public void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    
+    setStyle(STYLE_NO_FRAME, ThemeUtil.isDarkTheme(requireActivity()) ? R.style.TextSecure_DarkTheme_FullScreenDialog
+                                                                      : R.style.TextSecure_LightTheme_FullScreenDialog);
+  }
+
+  @Override
+  public @NonNull View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+    View view = inflater.inflate(R.layout.full_screen_dialog_fragment, container, false);
+    inflater.inflate(getDialogLayoutResource(), view.findViewById(R.id.full_screen_dialog_content), true);
+    toolbar = view.findViewById(R.id.full_screen_dialog_toolbar);
+    toolbar.setTitle(getTitle());
+    toolbar.setNavigationOnClickListener(v -> onNavigateUp());
+    return view;
+  }
+
+  protected void onNavigateUp() {
+    dismissAllowingStateLoss();
+  }
+
+  protected abstract @StringRes int getTitle();
+
+  protected abstract @LayoutRes int getDialogLayoutResource();
+}

app/src/main/java/org/thoughtcrime/securesms/components/QuoteView.java

@@ -242,14 +242,14 @@ public class QuoteView extends FrameLayout implements RecipientForeverObserver {
     if (!viewOnceSlides.isEmpty()) {
       thumbnailView.setVisibility(GONE);
       attachmentContainerView.setVisibility(GONE);
-    } else if (!imageVideoSlides.isEmpty() && imageVideoSlides.get(0).getThumbnailUri() != null) {
+    } else if (!imageVideoSlides.isEmpty() && imageVideoSlides.get(0).getUri() != null) {
       thumbnailView.setVisibility(VISIBLE);
       attachmentContainerView.setVisibility(GONE);
       dismissView.setBackgroundResource(R.drawable.dismiss_background);
       if (imageVideoSlides.get(0).hasVideo()) {
         attachmentVideoOverlayView.setVisibility(VISIBLE);
       }
-      glideRequests.load(new DecryptableUri(imageVideoSlides.get(0).getThumbnailUri()))
+      glideRequests.load(new DecryptableUri(imageVideoSlides.get(0).getUri()))
                    .centerCrop()
                    .override(getContext().getResources().getDimensionPixelSize(R.dimen.quote_thumb_size))
                    .diskCacheStrategy(DiskCacheStrategy.RESOURCE)

app/src/main/java/org/thoughtcrime/securesms/components/RecentPhotoViewRail.java

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.components;
 
 
 import android.annotation.TargetApi;
+import android.content.ContentUris;
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
@@ -106,7 +107,7 @@ public class RecentPhotoViewRail extends FrameLayout implements LoaderManager.Lo
     public void onBindItemViewHolder(RecentPhotoViewHolder viewHolder, @NonNull Cursor cursor) {
       viewHolder.imageView.setImageDrawable(null);
 
-      String path         = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.DATA));
+      long   rowId        = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns._ID));
       long   dateTaken    = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.DATE_TAKEN));
       long   dateModified = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.DATE_MODIFIED));
       String mimeType     = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.MIME_TYPE));
@@ -116,7 +117,7 @@ public class RecentPhotoViewRail extends FrameLayout implements LoaderManager.Lo
       int    width        = cursor.getInt(cursor.getColumnIndexOrThrow(getWidthColumn(orientation)));
       int    height       = cursor.getInt(cursor.getColumnIndexOrThrow(getHeightColumn(orientation)));
 
-      final Uri uri = Uri.fromFile(new File(path));
+      final Uri uri = ContentUris.withAppendedId(RecentPhotosLoader.BASE_URL, rowId);
 
       Key signature = new MediaStoreSignature(mimeType, dateModified, orientation);
 

app/src/main/java/org/thoughtcrime/securesms/components/SharedContactView.java

@@ -119,7 +119,7 @@ public class SharedContactView extends LinearLayout implements RecipientForeverO
     this.activeRecipients.clear();
 
     presentContact(contact);
-    presentAvatar(contact.getAvatarAttachment() != null ? contact.getAvatarAttachment().getDataUri() : null);
+    presentAvatar(contact.getAvatarAttachment() != null ? contact.getAvatarAttachment().getUri() : null);
     presentActionButtons(ContactUtil.getRecipients(getContext(), contact));
 
     for (LiveRecipient recipient : activeRecipients.values()) {

app/src/main/java/org/thoughtcrime/securesms/components/ThumbnailView.java

@@ -279,7 +279,7 @@ public class ThumbnailView extends FrameLayout {
       getTransferControls().setVisibility(View.GONE);
     }
 
-    if (slide.getThumbnailUri() != null && slide.hasPlayOverlay() &&
+    if (slide.getUri() != null && slide.hasPlayOverlay() &&
         (slide.getTransferState() == AttachmentDatabase.TRANSFER_PROGRESS_DONE || isPreview))
     {
       this.playOverlay.setVisibility(View.VISIBLE);
@@ -288,12 +288,12 @@ public class ThumbnailView extends FrameLayout {
     }
 
     if (Util.equals(slide, this.slide)) {
-      Log.i(TAG, "Not re-loading slide " + slide.asAttachment().getDataUri());
+      Log.i(TAG, "Not re-loading slide " + slide.asAttachment().getUri());
       return new SettableFuture<>(false);
     }
 
     if (this.slide != null && this.slide.getFastPreflightId() != null      &&
-        (!slide.hasVideo() || Util.equals(this.slide.getThumbnailUri(), slide.getThumbnailUri())) &&
+        (!slide.hasVideo() || Util.equals(this.slide.getUri(), slide.getUri())) &&
         Util.equals(this.slide.getFastPreflightId(), slide.getFastPreflightId()))
     {
       Log.i(TAG, "Not re-loading slide for fast preflight: " + slide.getFastPreflightId());
@@ -301,7 +301,7 @@ public class ThumbnailView extends FrameLayout {
       return new SettableFuture<>(false);
     }
 
-    Log.i(TAG, "loading part with id " + slide.asAttachment().getDataUri()
+    Log.i(TAG, "loading part with id " + slide.asAttachment().getUri()
                + ", progress " + slide.getTransferState() + ", fast preflight id: " +
                slide.asAttachment().getFastPreflightId());
 
@@ -327,7 +327,7 @@ public class ThumbnailView extends FrameLayout {
       blurhash.setImageDrawable(null);
     }
 
-    if (slide.getThumbnailUri() != null) {
+    if (slide.getUri() != null) {
       if (!MediaUtil.isJpegType(slide.getContentType()) && !MediaUtil.isVideoType(slide.getContentType())) {
         SettableFuture<Boolean> thumbnailFuture = new SettableFuture<>();
         thumbnailFuture.deferTo(result);
@@ -412,7 +412,7 @@ public class ThumbnailView extends FrameLayout {
   }
 
   private GlideRequest buildThumbnailGlideRequest(@NonNull GlideRequests glideRequests, @NonNull Slide slide) {
-    GlideRequest request = applySizing(glideRequests.load(new DecryptableUri(slide.getThumbnailUri()))
+    GlideRequest request = applySizing(glideRequests.load(new DecryptableUri(slide.getUri()))
                                           .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
                                           .transition(withCrossFade()), fit);
 
@@ -469,10 +469,10 @@ public class ThumbnailView extends FrameLayout {
   private class ThumbnailClickDispatcher implements View.OnClickListener {
     @Override
     public void onClick(View view) {
-      if (thumbnailClickListener            != null &&
-          slide                             != null &&
-          slide.asAttachment().getDataUri() != null &&
-          slide.getTransferState()          == AttachmentDatabase.TRANSFER_PROGRESS_DONE)
+      if (thumbnailClickListener        != null &&
+          slide                         != null &&
+          slide.asAttachment().getUri() != null &&
+          slide.getTransferState()      == AttachmentDatabase.TRANSFER_PROGRESS_DONE)
       {
         thumbnailClickListener.onClick(view, slide);
       } else if (parentClickListener != null) {

app/src/main/java/org/thoughtcrime/securesms/components/reminder/OutdatedBuildReminder.java

@@ -23,7 +23,12 @@ public class OutdatedBuildReminder extends Reminder {
 
   private static CharSequence getPluralsText(final Context context) {
     int days = getDaysUntilExpiry() - 1;
-    return context.getResources().getQuantityString(R.plurals.OutdatedBuildReminder_your_version_of_signal_will_expire_in_n_days, days, days);
+
+    if (days == 0) {
+      return context.getString(R.string.OutdatedBuildReminder_your_version_of_signal_will_expire_today);
+    } else {
+      return context.getResources().getQuantityString(R.plurals.OutdatedBuildReminder_your_version_of_signal_will_expire_in_n_days, days, days);
+    }
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/reminder/PendingGroupJoinRequestsReminder.java

@@ -0,0 +1,44 @@
+package org.thoughtcrime.securesms.components.reminder;
+
+import android.content.Context;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.database.GroupDatabase;
+import org.thoughtcrime.securesms.keyvalue.SignalStore;
+import org.thoughtcrime.securesms.util.PlayStoreUtil;
+
+import java.util.List;
+
+/**
+ * Shown to admins when there are pending group join requests.
+ */
+public final class PendingGroupJoinRequestsReminder extends Reminder {
+
+  private PendingGroupJoinRequestsReminder(@Nullable CharSequence title,
+                                           @NonNull CharSequence text)
+  {
+    super(title, text);
+  }
+
+  public static Reminder create(@NonNull Context context, int count) {
+    String   message  = context.getResources().getQuantityString(R.plurals.PendingGroupJoinRequestsReminder_d_pending_member_requests, count, count);
+    Reminder reminder = new PendingGroupJoinRequestsReminder(null, message);
+
+    reminder.addAction(new Action(context.getString(R.string.PendingGroupJoinRequestsReminder_view), R.id.reminder_action_review_join_requests));
+
+    return reminder;
+  }
+
+  @Override
+  public boolean isDismissable() {
+    return true;
+  }
+
+  @Override
+  public @NonNull Importance getImportance() {
+    return Importance.NORMAL;
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/reminder/Reminder.java

@@ -74,7 +74,7 @@ public abstract class Reminder {
     NORMAL, ERROR, TERMINAL
   }
 
-  public final class Action {
+  public static final class Action {
     private final CharSequence title;
     private final int          actionId;
 

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteMediaController.java

@@ -0,0 +1,253 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.content.ComponentName;
+import android.media.AudioManager;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.RemoteException;
+import android.support.v4.media.MediaBrowserCompat;
+import android.support.v4.media.MediaMetadataCompat;
+import android.support.v4.media.session.MediaControllerCompat;
+import android.support.v4.media.session.MediaSessionCompat;
+import android.support.v4.media.session.PlaybackStateCompat;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.DefaultLifecycleObserver;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import org.thoughtcrime.securesms.logging.Log;
+
+import java.util.Objects;
+
+/**
+ * Encapsulates control of voice note playback from an Activity component.
+ *
+ * This class assumes that it will be created within the scope of Activity#onCreate
+ *
+ * The workhorse of this repository is the ProgressEventHandler, which will supply a
+ * steady stream of update events to the set callback.
+ */
+public class VoiceNoteMediaController implements DefaultLifecycleObserver {
+
+  public static final String EXTRA_MESSAGE_ID = "voice.note.message_id";
+  public static final String EXTRA_PROGRESS = "voice.note.playhead";
+  public static final String EXTRA_PLAY_SINGLE = "voice.note.play.single";
+
+  private static final String TAG = Log.tag(VoiceNoteMediaController.class);
+
+  private MediaBrowserCompat                      mediaBrowser;
+  private AppCompatActivity                       activity;
+  private ProgressEventHandler                    progressEventHandler;
+  private MutableLiveData<VoiceNotePlaybackState> voiceNotePlaybackState = new MutableLiveData<>(VoiceNotePlaybackState.NONE);
+
+  private final MediaControllerCompatCallback mediaControllerCompatCallback = new MediaControllerCompatCallback();
+
+  public VoiceNoteMediaController(@NonNull AppCompatActivity activity) {
+    this.activity     = activity;
+    this.mediaBrowser = new MediaBrowserCompat(activity,
+                                               new ComponentName(activity, VoiceNotePlaybackService.class),
+                                               new ConnectionCallback(),
+                                               null);
+
+    activity.getLifecycle().addObserver(this);
+  }
+
+  public LiveData<VoiceNotePlaybackState> getVoiceNotePlaybackState() {
+    return voiceNotePlaybackState;
+  }
+
+  @Override
+  public void onStart(@NonNull LifecycleOwner owner) {
+    mediaBrowser.connect();
+  }
+
+  @Override
+  public void onResume(@NonNull LifecycleOwner owner) {
+    activity.setVolumeControlStream(AudioManager.STREAM_MUSIC);
+  }
+
+  @Override
+  public void onStop(@NonNull LifecycleOwner owner) {
+    clearProgressEventHandler();
+
+    if (MediaControllerCompat.getMediaController(activity) != null) {
+      MediaControllerCompat.getMediaController(activity).unregisterCallback(mediaControllerCompatCallback);
+    }
+    mediaBrowser.disconnect();
+  }
+
+  @Override
+  public void onDestroy(@NonNull LifecycleOwner owner) {
+    activity.getLifecycle().removeObserver(this);
+    activity = null;
+  }
+
+  private static boolean isPlayerActive(@NonNull PlaybackStateCompat playbackStateCompat) {
+    return playbackStateCompat.getState() == PlaybackStateCompat.STATE_BUFFERING ||
+           playbackStateCompat.getState() == PlaybackStateCompat.STATE_PLAYING;
+  }
+
+  private @NonNull MediaControllerCompat getMediaController() {
+    return MediaControllerCompat.getMediaController(activity);
+  }
+
+
+  public void startConsecutivePlayback(@NonNull Uri audioSlideUri, long messageId, double progress) {
+    startPlayback(audioSlideUri, messageId, progress, false);
+  }
+
+  public void startSinglePlayback(@NonNull Uri audioSlideUri, long messageId, double progress) {
+    startPlayback(audioSlideUri, messageId, progress, true);
+  }
+
+  /**
+   * Tells the Media service to begin playback of a given audio slide. If the audio
+   * slide is currently playing, we jump to the desired position and then begin playback.
+   *
+   * @param audioSlideUri  The Uri of the desired audio slide
+   * @param messageId      The Message id of the given audio slide
+   * @param progress       The desired progress % to seek to.
+   * @param singlePlayback The player will only play back the specified Uri, and not build a playlist.
+   */
+  private void startPlayback(@NonNull Uri audioSlideUri, long messageId, double progress, boolean singlePlayback) {
+    if (isCurrentTrack(audioSlideUri)) {
+      long duration = getMediaController().getMetadata().getLong(MediaMetadataCompat.METADATA_KEY_DURATION);
+
+      getMediaController().getTransportControls().seekTo((long) (duration * progress));
+      getMediaController().getTransportControls().play();
+    } else {
+      Bundle extras = new Bundle();
+      extras.putLong(EXTRA_MESSAGE_ID, messageId);
+      extras.putDouble(EXTRA_PROGRESS, progress);
+      extras.putBoolean(EXTRA_PLAY_SINGLE, singlePlayback);
+
+      getMediaController().getTransportControls().playFromUri(audioSlideUri, extras);
+    }
+  }
+
+  /**
+   * Pauses playback if the given audio slide is playing.
+   *
+   * @param audioSlideUri The Uri of the audio slide to pause.
+   */
+  public void pausePlayback(@NonNull Uri audioSlideUri) {
+    if (isCurrentTrack(audioSlideUri)) {
+      getMediaController().getTransportControls().pause();
+    }
+  }
+
+  /**
+   * Seeks to a given position if th given audio slide is playing. This call
+   * is ignored if the given audio slide is not currently playing.
+   *
+   * @param audioSlideUri The Uri of the audio slide to seek.
+   * @param progress      The progress percentage to seek to.
+   */
+  public void seekToPosition(@NonNull Uri audioSlideUri, double progress) {
+    if (isCurrentTrack(audioSlideUri)) {
+      long duration = getMediaController().getMetadata().getLong(MediaMetadataCompat.METADATA_KEY_DURATION);
+
+      getMediaController().getTransportControls().pause();
+      getMediaController().getTransportControls().seekTo((long) (duration * progress));
+      getMediaController().getTransportControls().play();
+    }
+  }
+
+  /**
+   * Stops playback if the given audio slide is playing
+   *
+   * @param audioSlideUri The Uri of the audio slide to stop
+   */
+  public void stopPlaybackAndReset(@NonNull Uri audioSlideUri) {
+    if (isCurrentTrack(audioSlideUri)) {
+      getMediaController().getTransportControls().stop();
+    }
+  }
+
+  private boolean isCurrentTrack(@NonNull Uri uri) {
+    MediaMetadataCompat metadataCompat = getMediaController().getMetadata();
+
+    return metadataCompat != null && Objects.equals(metadataCompat.getDescription().getMediaUri(), uri);
+  }
+
+  private void notifyProgressEventHandler() {
+    if (progressEventHandler == null) {
+      progressEventHandler = new ProgressEventHandler(getMediaController(), voiceNotePlaybackState);
+      progressEventHandler.sendEmptyMessage(0);
+    }
+  }
+
+  private void clearProgressEventHandler() {
+    if (progressEventHandler != null) {
+      progressEventHandler = null;
+    }
+  }
+
+  private final class ConnectionCallback extends MediaBrowserCompat.ConnectionCallback {
+    @Override
+    public void onConnected() {
+      try {
+        MediaSessionCompat.Token token           = mediaBrowser.getSessionToken();
+        MediaControllerCompat    mediaController = new MediaControllerCompat(activity, token);
+
+        MediaControllerCompat.setMediaController(activity, mediaController);
+
+        mediaController.registerCallback(mediaControllerCompatCallback);
+
+        mediaControllerCompatCallback.onPlaybackStateChanged(mediaController.getPlaybackState());
+      } catch (RemoteException e) {
+        Log.w(TAG, "onConnected: Failed to set media controller", e);
+      }
+    }
+  }
+
+  private static class ProgressEventHandler extends Handler {
+
+    private final MediaControllerCompat                    mediaController;
+    private final MutableLiveData<VoiceNotePlaybackState>  voiceNotePlaybackState;
+
+    private ProgressEventHandler(@NonNull MediaControllerCompat mediaController,
+                                 @NonNull MutableLiveData<VoiceNotePlaybackState> voiceNotePlaybackState) {
+      this.mediaController        = mediaController;
+      this.voiceNotePlaybackState = voiceNotePlaybackState;
+    }
+
+    @Override
+    public void handleMessage(Message msg) {
+      MediaMetadataCompat mediaMetadataCompat = mediaController.getMetadata();
+      if (isPlayerActive(mediaController.getPlaybackState()) &&
+          mediaMetadataCompat != null                        &&
+          mediaMetadataCompat.getDescription() != null)
+      {
+
+        Uri     mediaUri  = Objects.requireNonNull(mediaMetadataCompat.getDescription().getMediaUri());
+        boolean autoReset = Objects.equals(mediaUri, VoiceNotePlaybackPreparer.NEXT_URI) || Objects.equals(mediaUri, VoiceNotePlaybackPreparer.END_URI);
+
+        voiceNotePlaybackState.postValue(new VoiceNotePlaybackState(mediaUri,
+                                                                    mediaController.getPlaybackState().getPosition(),
+                                                                    mediaMetadataCompat.getLong(MediaMetadataCompat.METADATA_KEY_DURATION),
+                                                                    autoReset));
+
+        sendEmptyMessageDelayed(0, 50);
+      } else {
+        voiceNotePlaybackState.postValue(VoiceNotePlaybackState.NONE);
+      }
+    }
+  }
+
+  private final class MediaControllerCompatCallback extends MediaControllerCompat.Callback {
+    @Override
+    public void onPlaybackStateChanged(PlaybackStateCompat state) {
+      if (isPlayerActive(state)) {
+        notifyProgressEventHandler();
+      } else {
+        clearProgressEventHandler();
+      }
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteMediaDescriptionCompatFactory.java

@@ -0,0 +1,100 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.content.Context;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.media.MediaDescriptionCompat;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.WorkerThread;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.database.DatabaseFactory;
+import org.thoughtcrime.securesms.database.model.MessageRecord;
+import org.thoughtcrime.securesms.database.model.MmsMessageRecord;
+import org.thoughtcrime.securesms.logging.Log;
+import org.thoughtcrime.securesms.preferences.widgets.NotificationPrivacyPreference;
+import org.thoughtcrime.securesms.recipients.Recipient;
+import org.thoughtcrime.securesms.util.DateUtils;
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
+
+import java.util.Locale;
+import java.util.Objects;
+
+/**
+ * Factory responsible for building out MediaDescriptionCompat objects for voice notes.
+ */
+class VoiceNoteMediaDescriptionCompatFactory {
+
+  public static final String EXTRA_MESSAGE_POSITION    = "voice.note.extra.MESSAGE_POSITION";
+  public static final String EXTRA_THREAD_RECIPIENT_ID = "voice.note.extra.RECIPIENT_ID";
+  public static final String EXTRA_AVATAR_RECIPIENT_ID = "voice.note.extra.SENDER_ID";
+  public static final String EXTRA_THREAD_ID           = "voice.note.extra.THREAD_ID";
+  public static final String EXTRA_COLOR               = "voice.note.extra.COLOR";
+  public static final String EXTRA_MESSAGE_ID          = "voice.note.extra.MESSAGE_ID";
+
+  private static final String TAG = Log.tag(VoiceNoteMediaDescriptionCompatFactory.class);
+
+  private VoiceNoteMediaDescriptionCompatFactory() {}
+
+  /**
+   * Build out a MediaDescriptionCompat for a given voice note. Expects to be run
+   * on a background thread.
+   *
+   * @param context       Context.
+   * @param messageRecord The MessageRecord of the given voice note.
+   *
+   * @return A MediaDescriptionCompat with all the details the service expects.
+   */
+  @WorkerThread
+  static MediaDescriptionCompat buildMediaDescription(@NonNull Context context,
+                                                      @NonNull MessageRecord messageRecord)
+  {
+    int startingPosition = DatabaseFactory.getMmsSmsDatabase(context)
+                                          .getMessagePositionInConversation(messageRecord.getThreadId(),
+                                                                            messageRecord.getDateReceived());
+
+    Recipient threadRecipient = Objects.requireNonNull(DatabaseFactory.getThreadDatabase(context)
+                                                                      .getRecipientForThreadId(messageRecord.getThreadId()));
+    Recipient sender          = messageRecord.isOutgoing() ? Recipient.self() : messageRecord.getIndividualRecipient();
+    Recipient avatarRecipient = threadRecipient.isGroup() ? threadRecipient : sender;
+
+    Bundle extras = new Bundle();
+    extras.putString(EXTRA_THREAD_RECIPIENT_ID, threadRecipient.getId().serialize());
+    extras.putString(EXTRA_AVATAR_RECIPIENT_ID, avatarRecipient.getId().serialize());
+    extras.putLong(EXTRA_MESSAGE_POSITION, startingPosition);
+    extras.putLong(EXTRA_THREAD_ID, messageRecord.getThreadId());
+    extras.putString(EXTRA_COLOR, threadRecipient.getColor().serialize());
+    extras.putLong(EXTRA_MESSAGE_ID, messageRecord.getId());
+
+    NotificationPrivacyPreference preference = TextSecurePreferences.getNotificationPrivacy(context);
+
+    String title;
+    if (preference.isDisplayContact() && threadRecipient.isGroup()) {
+      title = context.getString(R.string.VoiceNoteMediaDescriptionCompatFactory__s_to_s,
+                                sender.getDisplayName(context),
+                                threadRecipient.getDisplayName(context));
+    } else if (preference.isDisplayContact()) {
+      title = sender.getDisplayName(context);
+    } else {
+      title = context.getString(R.string.MessageNotifier_signal_message);
+    }
+
+    String subtitle = null;
+    if (preference.isDisplayContact()) {
+      subtitle = context.getString(R.string.VoiceNoteMediaDescriptionCompatFactory__voice_message,
+                                   DateUtils.formatDateWithoutDayOfWeek(Locale.getDefault(),
+                                                                        messageRecord.getDateReceived()));
+    }
+
+    Uri uri = ((MmsMessageRecord) messageRecord).getSlideDeck().getAudioSlide().getUri();
+
+    return new MediaDescriptionCompat.Builder()
+                                     .setMediaUri(uri)
+                                     .setTitle(title)
+                                     .setSubtitle(subtitle)
+                                     .setExtras(extras)
+                                     .build();
+  }
+
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteMediaSourceFactory.java

@@ -0,0 +1,47 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.content.Context;
+import android.net.Uri;
+import android.support.v4.media.MediaDescriptionCompat;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.google.android.exoplayer2.ext.mediasession.TimelineQueueEditor;
+import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory;
+import com.google.android.exoplayer2.extractor.ExtractorsFactory;
+import com.google.android.exoplayer2.source.ExtractorMediaSource;
+import com.google.android.exoplayer2.source.MediaSource;
+import com.google.android.exoplayer2.upstream.AssetDataSource;
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
+
+import org.thoughtcrime.securesms.video.exo.AttachmentDataSourceFactory;
+
+/**
+ * This class is responsible for creating a MediaSource object for a given MediaDescriptionCompat
+ */
+final class VoiceNoteMediaSourceFactory {
+
+  private final Context context;
+
+  VoiceNoteMediaSourceFactory(Context context) {
+    this.context = context;
+  }
+
+  /**
+   * Creates a MediaSource for a given MediaDescriptionCompat
+   *
+   * @param description The description to build from
+   *
+   * @return A preparable MediaSource
+   */
+  public @Nullable MediaSource createMediaSource(MediaDescriptionCompat description) {
+    DefaultDataSourceFactory    defaultDataSourceFactory    = new DefaultDataSourceFactory(context, "GenericUserAgent", null);
+    AttachmentDataSourceFactory attachmentDataSourceFactory = new AttachmentDataSourceFactory(context, defaultDataSourceFactory, null);
+    ExtractorsFactory           extractorsFactory           = new DefaultExtractorsFactory().setConstantBitrateSeekingEnabled(true);
+
+    return new ExtractorMediaSource.Factory(attachmentDataSourceFactory)
+                                   .setExtractorsFactory(extractorsFactory)
+                                   .createMediaSource(description.getMediaUri());
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteNotificationControlDispatcher.java

@@ -0,0 +1,34 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import androidx.annotation.NonNull;
+
+import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.DefaultControlDispatcher;
+import com.google.android.exoplayer2.Player;
+
+public class VoiceNoteNotificationControlDispatcher extends DefaultControlDispatcher {
+
+  private final VoiceNoteQueueDataAdapter dataAdapter;
+
+  public VoiceNoteNotificationControlDispatcher(@NonNull VoiceNoteQueueDataAdapter dataAdapter) {
+    this.dataAdapter = dataAdapter;
+  }
+
+  @Override
+  public boolean dispatchSeekTo(Player player, int windowIndex, long positionMs) {
+    boolean isQueueToneIndex = windowIndex % 2 == 1;
+    boolean isSeekingToStart = positionMs == C.TIME_UNSET;
+
+    if (isQueueToneIndex && isSeekingToStart) {
+      int nextVoiceNoteWindowIndex = player.getCurrentWindowIndex() < windowIndex ? windowIndex + 1 : windowIndex - 1;
+
+      if (dataAdapter.size() <= nextVoiceNoteWindowIndex) {
+        return super.dispatchSeekTo(player, windowIndex, positionMs);
+      } else {
+        return super.dispatchSeekTo(player, nextVoiceNoteWindowIndex, positionMs);
+      }
+    } else {
+      return super.dispatchSeekTo(player, windowIndex, positionMs);
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteNotificationManager.java

@@ -0,0 +1,160 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.os.RemoteException;
+import android.support.v4.media.session.MediaControllerCompat;
+import android.support.v4.media.session.MediaSessionCompat;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.ui.PlayerNotificationManager;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.color.MaterialColor;
+import org.thoughtcrime.securesms.contacts.avatars.ContactColors;
+import org.thoughtcrime.securesms.conversation.ConversationActivity;
+import org.thoughtcrime.securesms.database.ThreadDatabase;
+import org.thoughtcrime.securesms.notifications.NotificationChannels;
+import org.thoughtcrime.securesms.recipients.Recipient;
+import org.thoughtcrime.securesms.recipients.RecipientId;
+import org.thoughtcrime.securesms.util.AvatarUtil;
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
+import org.thoughtcrime.securesms.util.concurrent.SignalExecutors;
+
+import java.util.Objects;
+
+class VoiceNoteNotificationManager {
+
+  private static final short NOW_PLAYING_NOTIFICATION_ID = 32221;
+
+  private final Context                   context;
+  private final MediaControllerCompat     controller;
+  private final PlayerNotificationManager notificationManager;
+
+  VoiceNoteNotificationManager(@NonNull Context context,
+                               @NonNull MediaSessionCompat.Token token,
+                               @NonNull PlayerNotificationManager.NotificationListener listener,
+                               @NonNull VoiceNoteQueueDataAdapter dataAdapter)
+  {
+    this.context  = context;
+
+    try {
+      controller = new MediaControllerCompat(context, token);
+    } catch (RemoteException e) {
+      throw new IllegalArgumentException("Could not create a controller with given token");
+    }
+
+    notificationManager = PlayerNotificationManager.createWithNotificationChannel(context,
+                                                                                  NotificationChannels.VOICE_NOTES,
+                                                                                  R.string.NotificationChannel_voice_notes,
+                                                                                  NOW_PLAYING_NOTIFICATION_ID,
+                                                                                  new DescriptionAdapter());
+
+    notificationManager.setMediaSessionToken(token);
+    notificationManager.setSmallIcon(R.drawable.ic_notification);
+    notificationManager.setRewindIncrementMs(0);
+    notificationManager.setFastForwardIncrementMs(0);
+    notificationManager.setNotificationListener(listener);
+    notificationManager.setColorized(true);
+    notificationManager.setControlDispatcher(new VoiceNoteNotificationControlDispatcher(dataAdapter));
+  }
+
+  public void hideNotification() {
+    notificationManager.setPlayer(null);
+  }
+
+  public void showNotification(@NonNull Player player) {
+    notificationManager.setPlayer(player);
+  }
+
+  private final class DescriptionAdapter implements PlayerNotificationManager.MediaDescriptionAdapter {
+
+    private RecipientId cachedRecipientId;
+    private Bitmap      cachedBitmap;
+
+    @Override
+    public String getCurrentContentTitle(Player player) {
+      if (hasMetadata()) {
+        return Objects.requireNonNull(controller.getMetadata().getDescription().getTitle()).toString();
+      } else {
+        return null;
+      }
+    }
+
+    @Override
+    public @Nullable PendingIntent createCurrentContentIntent(Player player) {
+      if (!hasMetadata()) return null;
+
+      RecipientId   recipientId      = RecipientId.from(Objects.requireNonNull(controller.getMetadata().getString(VoiceNoteMediaDescriptionCompatFactory.EXTRA_THREAD_RECIPIENT_ID)));
+      int           startingPosition = (int) controller.getMetadata().getLong(VoiceNoteMediaDescriptionCompatFactory.EXTRA_MESSAGE_POSITION);
+      long          threadId         = controller.getMetadata().getLong(VoiceNoteMediaDescriptionCompatFactory.EXTRA_THREAD_ID);
+
+      MaterialColor color;
+      try {
+        color = MaterialColor.fromSerialized(controller.getMetadata().getString(VoiceNoteMediaDescriptionCompatFactory.EXTRA_COLOR));
+      } catch (MaterialColor.UnknownColorException e) {
+        color = ContactColors.UNKNOWN_COLOR;
+      }
+
+      notificationManager.setColor(color.toNotificationColor(context));
+
+      Intent conversationActivity = ConversationActivity.buildIntent(context,
+                                                                     recipientId,
+                                                                     threadId,
+                                                                     ThreadDatabase.DistributionTypes.DEFAULT,
+                                                                     startingPosition);
+
+      conversationActivity.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+      return PendingIntent.getActivity(context,
+                                       0,
+                                       conversationActivity,
+                                       PendingIntent.FLAG_CANCEL_CURRENT);
+    }
+
+    @Override
+    public String getCurrentContentText(Player player) {
+      if (hasMetadata()) {
+        return Objects.toString(controller.getMetadata().getDescription().getSubtitle(), null);
+      } else {
+        return null;
+      }
+    }
+
+    @Override
+    public @Nullable Bitmap getCurrentLargeIcon(Player player, PlayerNotificationManager.BitmapCallback callback) {
+      if (!hasMetadata() || !TextSecurePreferences.getNotificationPrivacy(context).isDisplayContact()) {
+        cachedBitmap      = null;
+        cachedRecipientId = null;
+        return null;
+      }
+
+      RecipientId currentRecipientId = RecipientId.from(Objects.requireNonNull(controller.getMetadata().getString(VoiceNoteMediaDescriptionCompatFactory.EXTRA_AVATAR_RECIPIENT_ID)));
+
+      if (Objects.equals(currentRecipientId, cachedRecipientId) && cachedBitmap != null) {
+        return cachedBitmap;
+      } else {
+        cachedRecipientId = currentRecipientId;
+        SignalExecutors.BOUNDED.execute(() -> {
+          try {
+            cachedBitmap = AvatarUtil.getBitmapForNotification(context, Recipient.resolved(cachedRecipientId));
+            callback.onBitmap(cachedBitmap);
+          } catch (Exception e) {
+            cachedBitmap = null;
+          }
+        });
+
+        return null;
+      }
+    }
+
+    private boolean hasMetadata() {
+      return controller.getMetadata() != null && controller.getMetadata().getDescription() != null;
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNotePlaybackPreparer.java

@@ -0,0 +1,268 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.content.Context;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.ResultReceiver;
+import android.support.v4.media.MediaDescriptionCompat;
+import android.support.v4.media.session.PlaybackStateCompat;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
+import androidx.annotation.WorkerThread;
+
+import com.annimon.stream.Stream;
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.Timeline;
+import com.google.android.exoplayer2.ext.mediasession.MediaSessionConnector;
+import com.google.android.exoplayer2.source.ConcatenatingMediaSource;
+
+import org.thoughtcrime.securesms.database.DatabaseFactory;
+import org.thoughtcrime.securesms.database.NoSuchMessageException;
+import org.thoughtcrime.securesms.database.model.MessageRecord;
+import org.thoughtcrime.securesms.logging.Log;
+import org.thoughtcrime.securesms.util.MessageRecordUtil;
+import org.thoughtcrime.securesms.util.Util;
+import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+
+/**
+ * ExoPlayer Preparer for Voice Notes. This only supports ACTION_PLAY_FROM_URI
+ */
+final class VoiceNotePlaybackPreparer implements MediaSessionConnector.PlaybackPreparer {
+
+  private static final String   TAG      = Log.tag(VoiceNotePlaybackPreparer.class);
+  private static final Executor EXECUTOR = Executors.newSingleThreadExecutor();
+  private static final long     LIMIT    = 5;
+
+  public static final Uri NEXT_URI = Uri.parse("file:///android_asset/sounds/state-change_confirm-down.ogg");
+  public static final Uri END_URI  = Uri.parse("file:///android_asset/sounds/state-change_confirm-up.ogg");
+
+  private final Context                     context;
+  private final SimpleExoPlayer             player;
+  private final VoiceNoteQueueDataAdapter   queueDataAdapter;
+  private final VoiceNoteMediaSourceFactory mediaSourceFactory;
+  private final ConcatenatingMediaSource    dataSource;
+
+  private boolean canLoadMore;
+  private Uri     latestUri = Uri.EMPTY;
+
+  VoiceNotePlaybackPreparer(@NonNull Context context,
+                            @NonNull SimpleExoPlayer player,
+                            @NonNull VoiceNoteQueueDataAdapter queueDataAdapter,
+                            @NonNull VoiceNoteMediaSourceFactory mediaSourceFactory)
+  {
+    this.context            = context;
+    this.player             = player;
+    this.queueDataAdapter   = queueDataAdapter;
+    this.mediaSourceFactory = mediaSourceFactory;
+    this.dataSource         = new ConcatenatingMediaSource();
+  }
+
+  @Override
+  public long getSupportedPrepareActions() {
+    return PlaybackStateCompat.ACTION_PLAY_FROM_URI;
+  }
+
+  @Override
+  public void onPrepare() {
+    throw new UnsupportedOperationException("VoiceNotePlaybackPreparer does not support onPrepare");
+  }
+
+  @Override
+  public void onPrepareFromMediaId(String mediaId, Bundle extras) {
+    throw new UnsupportedOperationException("VoiceNotePlaybackPreparer does not support onPrepareFromMediaId");
+  }
+
+  @Override
+  public void onPrepareFromSearch(String query, Bundle extras) {
+    throw new UnsupportedOperationException("VoiceNotePlaybackPreparer does not support onPrepareFromSearch");
+  }
+
+  @Override
+  public void onPrepareFromUri(final Uri uri, Bundle extras) {
+    long    messageId      = extras.getLong(VoiceNoteMediaController.EXTRA_MESSAGE_ID);
+    double  progress       = extras.getDouble(VoiceNoteMediaController.EXTRA_PROGRESS, 0);
+    boolean singlePlayback = extras.getBoolean(VoiceNoteMediaController.EXTRA_PLAY_SINGLE, false);
+
+    canLoadMore = false;
+    latestUri   = uri;
+
+    queueDataAdapter.clear();
+    dataSource.clear();
+
+    SimpleTask.run(EXECUTOR,
+                   () -> {
+                     if (singlePlayback) {
+                       return loadMediaDescriptionForSinglePlayback(messageId);
+                     } else {
+                       return loadMediaDescriptionsForConsecutivePlayback(messageId);
+                     }
+                   },
+                   descriptions -> {
+                     if (Util.hasItems(descriptions) && Objects.equals(latestUri, uri)) {
+                       applyDescriptionsToQueue(descriptions);
+
+                       int window = Math.max(0, queueDataAdapter.indexOf(uri));
+
+                       player.addListener(new Player.EventListener() {
+                         @Override
+                         public void onTimelineChanged(Timeline timeline, @Nullable Object manifest, int reason) {
+                           if (timeline.getWindowCount() >= window) {
+                             player.seekTo(window, (long) (player.getDuration() * progress));
+                             player.removeListener(this);
+                           }
+                         }
+                       });
+
+                       player.prepare(dataSource);
+                       canLoadMore = !singlePlayback;
+                     }
+                   });
+  }
+
+  @Override
+  public String[] getCommands() {
+    return new String[0];
+  }
+
+  @Override
+  public void onCommand(Player player, String command, Bundle extras, ResultReceiver cb) {
+  }
+
+  private void applyDescriptionsToQueue(@NonNull List<MediaDescriptionCompat> descriptions) {
+    for (MediaDescriptionCompat description : descriptions) {
+      int                    holderIndex  = queueDataAdapter.indexOf(description.getMediaUri());
+      MediaDescriptionCompat next         = createNextClone(description);
+      int                    currentIndex = player.getCurrentWindowIndex();
+
+      if (holderIndex != -1) {
+        queueDataAdapter.remove(holderIndex);
+        queueDataAdapter.remove(holderIndex);
+        queueDataAdapter.add(holderIndex, createNextClone(description));
+        queueDataAdapter.add(holderIndex, description);
+
+        if (currentIndex != holderIndex) {
+          dataSource.removeMediaSource(holderIndex);
+          dataSource.addMediaSource(holderIndex, mediaSourceFactory.createMediaSource(description));
+        }
+
+        if (currentIndex != holderIndex + 1) {
+          dataSource.removeMediaSource(holderIndex + 1);
+          dataSource.addMediaSource(holderIndex + 1, mediaSourceFactory.createMediaSource(next));
+        }
+      } else {
+        int insertLocation = queueDataAdapter.indexAfter(description);
+
+        queueDataAdapter.add(insertLocation, next);
+        queueDataAdapter.add(insertLocation, description);
+
+        dataSource.addMediaSource(insertLocation, mediaSourceFactory.createMediaSource(next));
+        dataSource.addMediaSource(insertLocation, mediaSourceFactory.createMediaSource(description));
+      }
+    }
+
+    int                    lastIndex = queueDataAdapter.size() - 1;
+    MediaDescriptionCompat last      = queueDataAdapter.getMediaDescription(lastIndex);
+
+    if (Objects.equals(last.getMediaUri(), NEXT_URI)) {
+      MediaDescriptionCompat end = createEndClone(last);
+
+      queueDataAdapter.remove(lastIndex);
+      queueDataAdapter.add(lastIndex, end);
+      dataSource.removeMediaSource(lastIndex);
+      dataSource.addMediaSource(lastIndex, mediaSourceFactory.createMediaSource(end));
+    }
+  }
+
+  private @NonNull MediaDescriptionCompat createEndClone(@NonNull MediaDescriptionCompat source) {
+    return buildUpon(source).setMediaId("end").setMediaUri(END_URI).build();
+  }
+
+  private @NonNull MediaDescriptionCompat createNextClone(@NonNull MediaDescriptionCompat source) {
+    return buildUpon(source).setMediaId("next").setMediaUri(NEXT_URI).build();
+  }
+
+  private @NonNull MediaDescriptionCompat.Builder buildUpon(@NonNull MediaDescriptionCompat source) {
+    return new MediaDescriptionCompat.Builder()
+                                     .setSubtitle(source.getSubtitle())
+                                     .setDescription(source.getDescription())
+                                     .setTitle(source.getTitle())
+                                     .setIconUri(source.getIconUri())
+                                     .setIconBitmap(source.getIconBitmap())
+                                     .setMediaId(source.getMediaId())
+                                     .setExtras(source.getExtras());
+  }
+
+  public void loadMoreVoiceNotes() {
+    if (!canLoadMore) {
+      return;
+    }
+
+    MediaDescriptionCompat mediaDescriptionCompat = queueDataAdapter.getMediaDescription(player.getCurrentWindowIndex());
+    long                   messageId              = mediaDescriptionCompat.getExtras().getLong(VoiceNoteMediaDescriptionCompatFactory.EXTRA_MESSAGE_ID);
+
+    SimpleTask.run(EXECUTOR,
+                   () -> loadMediaDescriptionsForConsecutivePlayback(messageId),
+                   descriptions -> {
+                     if (Util.hasItems(descriptions) && canLoadMore) {
+                       applyDescriptionsToQueue(descriptions);
+                     }
+                   });
+  }
+
+  private @NonNull List<MediaDescriptionCompat> loadMediaDescriptionForSinglePlayback(long messageId) {
+    try {
+      MessageRecord messageRecord = DatabaseFactory.getMmsDatabase(context).getMessageRecord(messageId);
+
+      if (!MessageRecordUtil.hasAudio(messageRecord)) {
+        Log.w(TAG, "Message does not contain audio.");
+        return Collections.emptyList();
+      }
+
+      return Collections.singletonList(VoiceNoteMediaDescriptionCompatFactory.buildMediaDescription(context ,messageRecord));
+    } catch (NoSuchMessageException e) {
+      Log.w(TAG, "Could not find message.", e);
+      return Collections.emptyList();
+    }
+  }
+
+  @WorkerThread
+  private @NonNull List<MediaDescriptionCompat> loadMediaDescriptionsForConsecutivePlayback(long messageId) {
+    try {
+      List<MessageRecord> recordsBefore = DatabaseFactory.getMmsSmsDatabase(context).getMessagesBeforeVoiceNoteExclusive(messageId, LIMIT);
+      List<MessageRecord> recordsAfter  = DatabaseFactory.getMmsSmsDatabase(context).getMessagesAfterVoiceNoteInclusive(messageId, LIMIT);
+
+      return Stream.of(buildFilteredMessageRecordList(recordsBefore, recordsAfter))
+                   .map(record -> VoiceNoteMediaDescriptionCompatFactory.buildMediaDescription(context, record))
+                   .toList();
+    } catch (NoSuchMessageException e) {
+      Log.w(TAG, "Could not find message.", e);
+      return Collections.emptyList();
+    }
+  }
+
+  @VisibleForTesting
+  static @NonNull List<MessageRecord> buildFilteredMessageRecordList(@NonNull List<MessageRecord> recordsBefore, @NonNull List<MessageRecord> recordsAfter) {
+    Collections.reverse(recordsBefore);
+    List<MessageRecord> filteredBefore = Stream.of(recordsBefore)
+                                               .takeWhile(MessageRecordUtil::hasAudio)
+                                               .toList();
+    Collections.reverse(filteredBefore);
+
+    List<MessageRecord> filteredAfter = Stream.of(recordsAfter)
+                                              .takeWhile(MessageRecordUtil::hasAudio)
+                                              .toList();
+
+    filteredBefore.addAll(filteredAfter);
+
+    return filteredBefore;
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNotePlaybackService.java

@@ -0,0 +1,240 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.app.Notification;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.media.AudioManager;
+import android.os.Bundle;
+import android.os.Process;
+import android.os.RemoteException;
+import android.support.v4.media.MediaBrowserCompat;
+import android.support.v4.media.session.MediaControllerCompat;
+import android.support.v4.media.session.MediaSessionCompat;
+import android.support.v4.media.session.PlaybackStateCompat;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
+import androidx.media.MediaBrowserServiceCompat;
+
+import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.DefaultLoadControl;
+import com.google.android.exoplayer2.DefaultRenderersFactory;
+import com.google.android.exoplayer2.ExoPlaybackException;
+import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.LoadControl;
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.audio.AudioAttributes;
+import com.google.android.exoplayer2.ext.mediasession.MediaSessionConnector;
+import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
+import com.google.android.exoplayer2.ui.PlayerNotificationManager;
+
+import org.thoughtcrime.securesms.logging.Log;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Android Service responsible for playback of voice notes.
+ */
+public class VoiceNotePlaybackService extends MediaBrowserServiceCompat {
+
+  private static final String TAG                 = Log.tag(VoiceNotePlaybackService.class);
+  private static final String EMPTY_ROOT_ID       = "empty-root-id";
+  private static final int    LOAD_MORE_THRESHOLD = 2;
+
+  private static final long SUPPORTED_ACTIONS = PlaybackStateCompat.ACTION_PLAY             |
+                                                PlaybackStateCompat.ACTION_PAUSE            |
+                                                PlaybackStateCompat.ACTION_SEEK_TO          |
+                                                PlaybackStateCompat.ACTION_STOP             |
+                                                PlaybackStateCompat.ACTION_PLAY_PAUSE;
+
+  private MediaSessionCompat           mediaSession;
+  private MediaSessionConnector        mediaSessionConnector;
+  private PlaybackStateCompat.Builder  stateBuilder;
+  private SimpleExoPlayer              player;
+  private BecomingNoisyReceiver        becomingNoisyReceiver;
+  private VoiceNoteNotificationManager voiceNoteNotificationManager;
+  private VoiceNoteQueueDataAdapter    queueDataAdapter;
+  private VoiceNotePlaybackPreparer    voiceNotePlaybackPreparer;
+  private VoiceNoteProximityManager    voiceNoteProximityManager;
+  private boolean                      isForegroundService;
+
+  private final LoadControl loadControl = new DefaultLoadControl.Builder()
+                                                                .setBufferDurationsMs(Integer.MAX_VALUE,
+                                                                                      Integer.MAX_VALUE,
+                                                                                      Integer.MAX_VALUE,
+                                                                                      Integer.MAX_VALUE)
+                                                                .createDefaultLoadControl();
+
+  @Override
+  public void onCreate() {
+    super.onCreate();
+
+    mediaSession                 = new MediaSessionCompat(this, TAG);
+    stateBuilder                 = new PlaybackStateCompat.Builder()
+                                                          .setActions(SUPPORTED_ACTIONS);
+    mediaSessionConnector        = new MediaSessionConnector(mediaSession, null);
+    becomingNoisyReceiver        = new BecomingNoisyReceiver(this, mediaSession.getSessionToken());
+    player                       = ExoPlayerFactory.newSimpleInstance(this, new DefaultRenderersFactory(this), new DefaultTrackSelector(), loadControl);
+    queueDataAdapter             = new VoiceNoteQueueDataAdapter();
+    voiceNoteNotificationManager = new VoiceNoteNotificationManager(this,
+                                                                    mediaSession.getSessionToken(),
+                                                                    new VoiceNoteNotificationManagerListener(),
+                                                                    queueDataAdapter);
+
+    VoiceNoteMediaSourceFactory mediaSourceFactory = new VoiceNoteMediaSourceFactory(this);
+
+    voiceNotePlaybackPreparer = new VoiceNotePlaybackPreparer(this, player, queueDataAdapter, mediaSourceFactory);
+    voiceNoteProximityManager = new VoiceNoteProximityManager(this, player);
+
+    mediaSession.setPlaybackState(stateBuilder.build());
+
+    player.addListener(new VoiceNotePlayerEventListener());
+    player.setAudioAttributes(new AudioAttributes.Builder()
+                                                 .setContentType(C.CONTENT_TYPE_SPEECH)
+                                                 .setUsage(C.USAGE_MEDIA)
+                                                 .build(), true);
+
+    mediaSessionConnector.setPlayer(player, voiceNotePlaybackPreparer);
+    mediaSessionConnector.setQueueNavigator(new VoiceNoteQueueNavigator(mediaSession, queueDataAdapter));
+
+    setSessionToken(mediaSession.getSessionToken());
+
+    mediaSession.setActive(true);
+  }
+
+  @Override
+  public void onTaskRemoved(Intent rootIntent) {
+    super.onTaskRemoved(rootIntent);
+
+    player.stop(true);
+  }
+
+  @Override
+  public void onDestroy() {
+    super.onDestroy();
+    mediaSession.setActive(false);
+    mediaSession.release();
+    becomingNoisyReceiver.unregister();
+    player.release();
+  }
+
+  @Override
+  public @Nullable BrowserRoot onGetRoot(@NonNull String clientPackageName, int clientUid, @Nullable Bundle rootHints) {
+    if (clientUid == Process.myUid()) {
+      return new BrowserRoot(EMPTY_ROOT_ID, null);
+    } else {
+      return null;
+    }
+  }
+
+  @Override
+  public void onLoadChildren(@NonNull String parentId, @NonNull Result<List<MediaBrowserCompat.MediaItem>> result) {
+    result.sendResult(Collections.emptyList());
+  }
+
+  private class VoiceNotePlayerEventListener implements Player.EventListener {
+    @Override
+    public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
+      switch (playbackState) {
+        case Player.STATE_BUFFERING:
+        case Player.STATE_READY:
+          voiceNoteProximityManager.onPlayerReady();
+          voiceNoteNotificationManager.showNotification(player);
+
+          if (!playWhenReady) {
+            stopForeground(false);
+            becomingNoisyReceiver.unregister();
+          } else {
+            becomingNoisyReceiver.register();
+          }
+          break;
+        default:
+          voiceNoteProximityManager.onPlayerEnded();
+          becomingNoisyReceiver.unregister();
+          voiceNoteNotificationManager.hideNotification();
+      }
+    }
+
+    @Override
+    public void onPositionDiscontinuity(int reason) {
+      int     currentWindowIndex = player.getCurrentWindowIndex();
+      boolean isWithinThreshold  = currentWindowIndex < LOAD_MORE_THRESHOLD ||
+                                   currentWindowIndex + LOAD_MORE_THRESHOLD >= queueDataAdapter.size();
+
+      if (isWithinThreshold && currentWindowIndex % 2 == 0) {
+        voiceNotePlaybackPreparer.loadMoreVoiceNotes();
+      }
+    }
+
+    @Override
+    public void onPlayerError(ExoPlaybackException error) {
+      Log.w(TAG, "ExoPlayer error occurred:", error);
+      voiceNoteProximityManager.onPlayerError();
+    }
+  }
+
+  private class VoiceNoteNotificationManagerListener implements PlayerNotificationManager.NotificationListener {
+
+    @Override
+    public void onNotificationStarted(int notificationId, Notification notification) {
+      if (!isForegroundService) {
+        ContextCompat.startForegroundService(getApplicationContext(), new Intent(getApplicationContext(), VoiceNotePlaybackService.class));
+        startForeground(notificationId, notification);
+        isForegroundService = true;
+      }
+    }
+
+    @Override
+    public void onNotificationCancelled(int notificationId) {
+      stopForeground(true);
+      isForegroundService = false;
+      stopSelf();
+    }
+  }
+
+  /**
+   * Receiver to pause playback when things become noisy.
+   */
+  private static class BecomingNoisyReceiver extends BroadcastReceiver {
+    private static final IntentFilter NOISY_INTENT_FILTER = new IntentFilter(AudioManager.ACTION_AUDIO_BECOMING_NOISY);
+
+    private final Context               context;
+    private final MediaControllerCompat controller;
+
+    private boolean registered;
+
+    private BecomingNoisyReceiver(Context context, MediaSessionCompat.Token token) {
+      this.context = context;
+      try {
+        this.controller = new MediaControllerCompat(context, token);
+      } catch (RemoteException e) {
+        throw new IllegalArgumentException("Failed to create controller from token", e);
+      }
+    }
+
+    void register() {
+      if (!registered) {
+        context.registerReceiver(this, NOISY_INTENT_FILTER);
+        registered = true;
+      }
+    }
+
+    void unregister() {
+      if (registered) {
+        context.unregisterReceiver(this);
+        registered = false;
+      }
+    }
+
+    public void onReceive(Context context, @NonNull Intent intent) {
+      if (AudioManager.ACTION_AUDIO_BECOMING_NOISY.equals(intent.getAction())) {
+        controller.getTransportControls().pause();
+      }
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNotePlaybackState.java

@@ -0,0 +1,53 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.net.Uri;
+
+import androidx.annotation.NonNull;
+
+/**
+ * Domain-level state object representing the state of the currently playing voice note.
+ */
+public class VoiceNotePlaybackState {
+
+  public static final VoiceNotePlaybackState NONE = new VoiceNotePlaybackState(Uri.EMPTY, 0, 0, false);
+
+  private final Uri     uri;
+  private final long    playheadPositionMillis;
+  private final long    trackDuration;
+  private final boolean autoReset;
+
+  public VoiceNotePlaybackState(@NonNull Uri uri, long playheadPositionMillis, long trackDuration, boolean autoReset) {
+    this.uri                    = uri;
+    this.playheadPositionMillis = playheadPositionMillis;
+    this.trackDuration          = trackDuration;
+    this.autoReset              = autoReset;
+  }
+
+  /**
+   * @return Uri of the currently playing AudioSlide
+   */
+  public Uri getUri() {
+    return uri;
+  }
+
+  /**
+   * @return The last known playhead position
+   */
+  public long getPlayheadPositionMillis() {
+    return playheadPositionMillis;
+  }
+
+  /**
+   * @return The track duration in ms
+   */
+  public long getTrackDuration() {
+    return trackDuration;
+  }
+
+  /**
+   * @return true if we should reset the currently playing clip.
+   */
+  public boolean isAutoReset() {
+    return autoReset;
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteProximityManager.java

@@ -0,0 +1,119 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.content.Context;
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.media.AudioManager;
+import android.os.Build;
+import android.os.PowerManager;
+
+import androidx.annotation.NonNull;
+
+import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.audio.AudioAttributes;
+import com.google.android.exoplayer2.util.Util;
+
+import org.thoughtcrime.securesms.logging.Log;
+import org.thoughtcrime.securesms.util.ServiceUtil;
+
+import java.util.concurrent.TimeUnit;
+
+class VoiceNoteProximityManager implements SensorEventListener {
+
+  private static final String TAG = Log.tag(VoiceNoteProximityManager.class);
+
+  private static final float  PROXIMITY_THRESHOLD = 5f;
+
+  private final SimpleExoPlayer       player;
+  private final AudioManager          audioManager;
+  private final SensorManager         sensorManager;
+  private final Sensor                proximitySensor;
+  private final PowerManager.WakeLock wakeLock;
+
+  private long startTime;
+
+  VoiceNoteProximityManager(@NonNull Context context, @NonNull SimpleExoPlayer player) {
+    this.player          = player;
+    this.audioManager    = ServiceUtil.getAudioManager(context);
+    this.sensorManager   = ServiceUtil.getSensorManager(context);
+    this.proximitySensor = sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
+
+    if (Build.VERSION.SDK_INT >= 21) {
+      this.wakeLock = ServiceUtil.getPowerManager(context).newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, TAG);
+    } else {
+      this.wakeLock = null;
+    }
+  }
+
+  void onPlayerReady() {
+    startTime = System.currentTimeMillis();
+    sensorManager.registerListener(this, proximitySensor, SensorManager.SENSOR_DELAY_NORMAL);
+  }
+
+  void onPlayerEnded() {
+    sensorManager.unregisterListener(this);
+
+    if (wakeLock != null && wakeLock.isHeld() && Build.VERSION.SDK_INT >= 21) {
+      wakeLock.release(PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
+    }
+  }
+
+  void onPlayerError() {
+    onPlayerEnded();
+  }
+
+  @Override
+  public void onSensorChanged(SensorEvent event) {
+    if (event.sensor.getType() != Sensor.TYPE_PROXIMITY || player.getPlaybackState() != Player.STATE_READY) {
+      return;
+    }
+
+    final int desiredStreamType;
+    if (event.values[0] < PROXIMITY_THRESHOLD && event.values[0] != proximitySensor.getMaximumRange()) {
+      desiredStreamType = AudioManager.STREAM_VOICE_CALL;
+    } else {
+      desiredStreamType = AudioManager.STREAM_MUSIC;
+    }
+
+    final int currentStreamType = Util.getStreamTypeForAudioUsage(player.getAudioAttributes().usage);
+
+    if (desiredStreamType == AudioManager.STREAM_VOICE_CALL &&
+        desiredStreamType != currentStreamType              &&
+        !audioManager.isWiredHeadsetOn())
+    {
+      if (wakeLock != null) {
+        wakeLock.acquire(TimeUnit.MINUTES.toMillis(30));
+      }
+
+      player.setPlayWhenReady(false);
+      player.setAudioAttributes(new AudioAttributes.Builder()
+                                                   .setContentType(C.CONTENT_TYPE_SPEECH)
+                                                   .setUsage(C.USAGE_VOICE_COMMUNICATION)
+                                                   .build());
+      player.setPlayWhenReady(true);
+
+      startTime = System.currentTimeMillis();
+    } else if (desiredStreamType == AudioManager.STREAM_MUSIC &&
+               desiredStreamType != currentStreamType         &&
+               System.currentTimeMillis() - startTime > 500)
+    {
+      if (wakeLock != null) {
+        wakeLock.release();
+        player.setPlayWhenReady(false);
+        player.setAudioAttributes(new AudioAttributes.Builder()
+                                                     .setContentType(C.CONTENT_TYPE_MUSIC)
+                                                     .setUsage(C.USAGE_MEDIA)
+                                                     .build(),
+                                  true);
+      }
+    }
+  }
+
+  @Override
+  public void onAccuracyChanged(Sensor sensor, int accuracy) {
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteQueueDataAdapter.java

@@ -0,0 +1,81 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.net.Uri;
+import android.support.v4.media.MediaDescriptionCompat;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.google.android.exoplayer2.ext.mediasession.TimelineQueueEditor;
+
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * DataAdapter which maintains the current queue of MediaDescriptionCompat objects.
+ */
+final class VoiceNoteQueueDataAdapter implements TimelineQueueEditor.QueueDataAdapter {
+
+  private final List<MediaDescriptionCompat> descriptions = new LinkedList<>();
+
+  @Override
+  public MediaDescriptionCompat getMediaDescription(int position) {
+    return descriptions.get(position);
+  }
+
+  @Override
+  public void add(int position, MediaDescriptionCompat description) {
+    descriptions.add(position, description);
+  }
+
+  @Override
+  public void remove(int position) {
+    descriptions.remove(position);
+  }
+
+  @Override
+  public void move(int from, int to) {
+    MediaDescriptionCompat description = descriptions.remove(from);
+    descriptions.add(to, description);
+  }
+
+  int size() {
+    return descriptions.size();
+  }
+
+  int indexOf(@NonNull Uri uri) {
+    for (int i = 0; i < descriptions.size(); i++) {
+      if (Objects.equals(uri, descriptions.get(i).getMediaUri())) {
+        return i;
+      }
+    }
+
+    return -1;
+  }
+
+  int indexAfter(@NonNull MediaDescriptionCompat target) {
+    if (isEmpty()) {
+      return 0;
+    }
+
+    long targetMessageId = target.getExtras().getLong(VoiceNoteMediaDescriptionCompatFactory.EXTRA_MESSAGE_ID);
+    for (int i = 0; i < descriptions.size(); i++) {
+      long descriptionMessageId = descriptions.get(i).getExtras().getLong(VoiceNoteMediaDescriptionCompatFactory.EXTRA_MESSAGE_ID);
+
+      if (descriptionMessageId > targetMessageId) {
+        return i;
+      }
+    }
+
+    return descriptions.size();
+  }
+
+  boolean isEmpty() {
+    return descriptions.isEmpty();
+  }
+
+  void clear() {
+    descriptions.clear();
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteQueueNavigator.java

@@ -0,0 +1,28 @@
+package org.thoughtcrime.securesms.components.voice;
+
+import android.support.v4.media.MediaDescriptionCompat;
+import android.support.v4.media.session.MediaSessionCompat;
+
+import androidx.annotation.NonNull;
+
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.ext.mediasession.TimelineQueueEditor;
+import com.google.android.exoplayer2.ext.mediasession.TimelineQueueNavigator;
+
+/**
+ * Navigator to help support seek forward and back.
+ */
+final class VoiceNoteQueueNavigator extends TimelineQueueNavigator {
+
+  private final TimelineQueueEditor.QueueDataAdapter queueDataAdapter;
+
+  public VoiceNoteQueueNavigator(@NonNull MediaSessionCompat mediaSession, @NonNull TimelineQueueEditor.QueueDataAdapter queueDataAdapter) {
+    super(mediaSession);
+    this.queueDataAdapter = queueDataAdapter;
+  }
+
+  @Override
+  public MediaDescriptionCompat getMediaDescription(Player player, int windowIndex) {
+    return queueDataAdapter.getMediaDescription(windowIndex);
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/BroadcastVideoSink.java

@@ -0,0 +1,43 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.webrtc.EglBase;
+import org.webrtc.VideoFrame;
+import org.webrtc.VideoSink;
+
+import java.lang.ref.WeakReference;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.WeakHashMap;
+
+public class BroadcastVideoSink implements VideoSink {
+
+  private final EglBase                         eglBase;
+  private final WeakHashMap<VideoSink, Boolean> sinks;
+
+  public BroadcastVideoSink(@Nullable EglBase eglBase) {
+    this.eglBase = eglBase;
+    this.sinks   = new WeakHashMap<>();
+  }
+
+  public @Nullable EglBase getEglBase() {
+    return eglBase;
+  }
+
+  public void addSink(@NonNull VideoSink sink) {
+    sinks.put(sink, true);
+  }
+
+  public void removeSink(@NonNull VideoSink sink) {
+    sinks.remove(sink);
+  }
+
+  @Override
+  public void onFrame(@NonNull VideoFrame videoFrame) {
+    for (VideoSink sink : sinks.keySet()) {
+      sink.onFrame(videoFrame);
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantView.java

@@ -0,0 +1,115 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.ImageView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.constraintlayout.widget.ConstraintLayout;
+
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.components.AvatarImageView;
+import org.thoughtcrime.securesms.contacts.avatars.ContactPhoto;
+import org.thoughtcrime.securesms.contacts.avatars.FallbackContactPhoto;
+import org.thoughtcrime.securesms.contacts.avatars.ResourceContactPhoto;
+import org.thoughtcrime.securesms.events.CallParticipant;
+import org.thoughtcrime.securesms.mms.GlideApp;
+import org.thoughtcrime.securesms.recipients.Recipient;
+import org.thoughtcrime.securesms.recipients.RecipientId;
+import org.thoughtcrime.securesms.util.AvatarUtil;
+
+import java.util.Objects;
+
+/**
+ * Encapsulates views needed to show a call participant including their
+ * avatar in full screen or pip mode, and their video feed.
+ */
+public class CallParticipantView extends ConstraintLayout {
+
+  private static final FallbackPhotoProvider FALLBACK_PHOTO_PROVIDER = new FallbackPhotoProvider();
+
+  private RecipientId         recipientId;
+  private AvatarImageView     avatar;
+  private TextureViewRenderer renderer;
+  private ImageView           pipAvatar;
+  private ContactPhoto        contactPhoto;
+
+  public CallParticipantView(@NonNull Context context) {
+    super(context);
+    onFinishInflate();
+  }
+
+  public CallParticipantView(@NonNull Context context, @Nullable AttributeSet attrs) {
+    super(context, attrs);
+  }
+
+  public CallParticipantView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+  }
+
+  @Override
+  protected void onFinishInflate() {
+    super.onFinishInflate();
+    avatar    = findViewById(R.id.call_participant_item_avatar);
+    pipAvatar = findViewById(R.id.call_participant_item_pip_avatar);
+    renderer  = findViewById(R.id.call_participant_renderer);
+
+    avatar.setFallbackPhotoProvider(FALLBACK_PHOTO_PROVIDER);
+  }
+
+  void setCallParticipant(@NonNull CallParticipant participant) {
+    boolean participantChanged = recipientId == null || !recipientId.equals(participant.getRecipient().getId());
+    recipientId = participant.getRecipient().getId();
+
+    renderer.setVisibility(participant.isVideoEnabled() ? View.VISIBLE : View.GONE);
+
+    if (participant.isVideoEnabled()) {
+      if (participant.getVideoSink().getEglBase() != null) {
+        renderer.init(participant.getVideoSink().getEglBase());
+      }
+      renderer.attachBroadcastVideoSink(participant.getVideoSink());
+    } else {
+      renderer.attachBroadcastVideoSink(null);
+    }
+
+    if (participantChanged || !Objects.equals(contactPhoto, participant.getRecipient().getContactPhoto())) {
+      avatar.setAvatar(participant.getRecipient());
+      AvatarUtil.loadBlurredIconIntoViewBackground(participant.getRecipient(), this);
+      setPipAvatar(participant.getRecipient());
+      contactPhoto = participant.getRecipient().getContactPhoto();
+    }
+  }
+
+  void setRenderInPip(boolean shouldRenderInPip) {
+    avatar.setVisibility(shouldRenderInPip ? View.GONE : View.VISIBLE);
+    pipAvatar.setVisibility(shouldRenderInPip ? View.VISIBLE : View.GONE);
+  }
+
+  private void setPipAvatar(@NonNull Recipient recipient) {
+    ContactPhoto         contactPhoto  = recipient.getContactPhoto();
+    FallbackContactPhoto fallbackPhoto = recipient.getFallbackContactPhoto(FALLBACK_PHOTO_PROVIDER);
+
+    GlideApp.with(this)
+            .load(contactPhoto)
+            .fallback(fallbackPhoto.asCallCard(getContext()))
+            .error(fallbackPhoto.asCallCard(getContext()))
+            .diskCacheStrategy(DiskCacheStrategy.ALL)
+            .into(pipAvatar);
+
+    pipAvatar.setScaleType(contactPhoto == null ? ImageView.ScaleType.CENTER_INSIDE : ImageView.ScaleType.CENTER_CROP);
+    pipAvatar.setBackgroundColor(recipient.getColor().toActionBarColor(getContext()));
+  }
+
+  private static final class FallbackPhotoProvider extends Recipient.FallbackPhotoProvider {
+    @Override
+    public @NonNull FallbackContactPhoto getPhotoForRecipientWithoutName() {
+      ResourceContactPhoto photo = new ResourceContactPhoto(R.drawable.ic_profile_outline_120);
+      photo.setScaleType(ImageView.ScaleType.CENTER_CROP);
+      return photo;
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantsLayout.java

@@ -0,0 +1,104 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.google.android.flexbox.AlignItems;
+import com.google.android.flexbox.FlexboxLayout;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.events.CallParticipant;
+import org.thoughtcrime.securesms.util.Util;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Can dynamically render a collection of call participants, adjusting their
+ * sizing and layout depending on the total number of participants.
+ */
+public class CallParticipantsLayout extends FlexboxLayout {
+
+  private List<CallParticipant> callParticipants = Collections.emptyList();
+  private boolean               shouldRenderInPip;
+
+  public CallParticipantsLayout(@NonNull Context context) {
+    super(context);
+  }
+
+  public CallParticipantsLayout(@NonNull Context context, @Nullable AttributeSet attrs) {
+    super(context, attrs);
+  }
+
+  public CallParticipantsLayout(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+  }
+
+  void update(@NonNull List<CallParticipant> callParticipants, boolean shouldRenderInPip) {
+    this.callParticipants  = callParticipants;
+    this.shouldRenderInPip = shouldRenderInPip;
+    updateLayout();
+  }
+
+  private void updateLayout() {
+    if (shouldRenderInPip && Util.hasItems(callParticipants)) {
+      updateChildrenCount(1);
+      update(0, callParticipants.get(0));
+    } else {
+      int count = callParticipants.size();
+      updateChildrenCount(count);
+
+      for (int i = 0; i < callParticipants.size(); i++) {
+        update(i, callParticipants.get(i));
+      }
+    }
+  }
+
+  private void updateChildrenCount(int count) {
+    int childCount = getChildCount();
+    if (childCount < count) {
+      for (int i = childCount; i < count; i++) {
+        addCallParticipantView();
+      }
+    } else if (childCount > count) {
+      for (int i = count; i < childCount; i++) {
+        removeViewAt(count);
+      }
+    }
+  }
+
+  private void update(int index, @NonNull CallParticipant participant) {
+    CallParticipantView callParticipantView = (CallParticipantView) getChildAt(index);
+    callParticipantView.setCallParticipant(participant);
+    callParticipantView.setRenderInPip(shouldRenderInPip);
+    setChildLayoutParams(callParticipantView, index, getChildCount());
+  }
+
+  private void addCallParticipantView() {
+    View                       view   = LayoutInflater.from(getContext()).inflate(R.layout.call_participant_item, this, false);
+    FlexboxLayout.LayoutParams params = (FlexboxLayout.LayoutParams) view.getLayoutParams();
+
+    params.setAlignSelf(AlignItems.STRETCH);
+    view.setLayoutParams(params);
+    addView(view);
+  }
+
+  private void setChildLayoutParams(@NonNull View child, int childPosition, int childCount) {
+    FlexboxLayout.LayoutParams params = (FlexboxLayout.LayoutParams) child.getLayoutParams();
+    if (childCount < 3) {
+      params.setFlexBasisPercent(1f);
+    } else {
+      if ((childCount % 2) != 0 && childPosition == childCount - 1) {
+        params.setFlexBasisPercent(1f);
+      } else {
+        params.setFlexBasisPercent(0.5f);
+      }
+    }
+    child.setLayoutParams(params);
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantsState.java

@@ -0,0 +1,215 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.thoughtcrime.securesms.events.CallParticipant;
+import org.thoughtcrime.securesms.events.WebRtcViewModel;
+import org.thoughtcrime.securesms.ringrtc.CameraState;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Represents the state of all participants, remote and local, combined with view state
+ * needed to properly render the participants. The view state primarily consists of
+ * if we are in System PIP mode and if we should show our video for an outgoing call.
+ */
+public final class CallParticipantsState {
+
+  private static final int SMALL_GROUP_MAX = 6;
+
+  public static final CallParticipantsState STARTING_STATE  = new CallParticipantsState(WebRtcViewModel.State.CALL_DISCONNECTED,
+                                                                                       Collections.emptyList(),
+                                                                                       CallParticipant.createLocal(CameraState.UNKNOWN, new BroadcastVideoSink(null), false),
+                                                                                       null,
+                                                                                       WebRtcLocalRenderState.GONE,
+                                                                                       false,
+                                                                                       false,
+                                                                                       false);
+
+  private final WebRtcViewModel.State  callState;
+  private final List<CallParticipant>  remoteParticipants;
+  private final CallParticipant        localParticipant;
+  private final CallParticipant        focusedParticipant;
+  private final WebRtcLocalRenderState localRenderState;
+  private final boolean                isInPipMode;
+  private final boolean                showVideoForOutgoing;
+  private final boolean                isViewingFocusedParticipant;
+
+  public CallParticipantsState(@NonNull WebRtcViewModel.State callState,
+                               @NonNull List<CallParticipant> remoteParticipants,
+                               @NonNull CallParticipant localParticipant,
+                               @Nullable CallParticipant focusedParticipant,
+                               @NonNull WebRtcLocalRenderState localRenderState,
+                               boolean isInPipMode,
+                               boolean showVideoForOutgoing,
+                               boolean isViewingFocusedParticipant)
+  {
+    this.callState                   = callState;
+    this.remoteParticipants          = remoteParticipants;
+    this.localParticipant            = localParticipant;
+    this.localRenderState            = localRenderState;
+    this.focusedParticipant          = focusedParticipant;
+    this.isInPipMode                 = isInPipMode;
+    this.showVideoForOutgoing        = showVideoForOutgoing;
+    this.isViewingFocusedParticipant = isViewingFocusedParticipant;
+  }
+
+  public @NonNull WebRtcViewModel.State getCallState() {
+    return callState;
+  }
+
+  public @NonNull List<CallParticipant> getGridParticipants() {
+    if (getAllRemoteParticipants().size() > SMALL_GROUP_MAX) {
+      return getAllRemoteParticipants().subList(0, SMALL_GROUP_MAX);
+    } else {
+      return getAllRemoteParticipants();
+    }
+  }
+
+  public @NonNull List<CallParticipant> getListParticipants() {
+    List<CallParticipant> listParticipants = new ArrayList<>();
+
+    if (isViewingFocusedParticipant && getAllRemoteParticipants().size() > 1) {
+      listParticipants.addAll(getAllRemoteParticipants().subList(1, getAllRemoteParticipants().size()));
+    } else if (getAllRemoteParticipants().size() > SMALL_GROUP_MAX) {
+      listParticipants.addAll(getAllRemoteParticipants().subList(SMALL_GROUP_MAX, getAllRemoteParticipants().size()));
+    } else {
+      return Collections.emptyList();
+    }
+
+    listParticipants.add(CallParticipant.EMPTY);
+
+    Collections.reverse(listParticipants);
+
+    return listParticipants;
+  }
+
+  public @NonNull List<CallParticipant> getAllRemoteParticipants() {
+    return remoteParticipants;
+  }
+
+  public @NonNull CallParticipant getLocalParticipant() {
+    return localParticipant;
+  }
+
+  public @Nullable CallParticipant getFocusedParticipant() {
+    return focusedParticipant;
+  }
+
+  public @NonNull WebRtcLocalRenderState getLocalRenderState() {
+    return localRenderState;
+  }
+
+  public boolean isLargeVideoGroup() {
+    return getAllRemoteParticipants().size() > SMALL_GROUP_MAX;
+  }
+
+  public boolean isInPipMode() {
+    return isInPipMode;
+  }
+
+  public static @NonNull CallParticipantsState update(@NonNull CallParticipantsState oldState,
+                                                      @NonNull WebRtcViewModel webRtcViewModel,
+                                                      boolean enableVideo)
+  {
+    boolean newShowVideoForOutgoing = oldState.showVideoForOutgoing;
+    if (enableVideo) {
+      newShowVideoForOutgoing = webRtcViewModel.getState() == WebRtcViewModel.State.CALL_OUTGOING;
+    } else if (webRtcViewModel.getState() != WebRtcViewModel.State.CALL_OUTGOING) {
+      newShowVideoForOutgoing = false;
+    }
+
+    WebRtcLocalRenderState localRenderState = determineLocalRenderMode(webRtcViewModel.getLocalParticipant(),
+                                                                       oldState.isInPipMode,
+                                                                       newShowVideoForOutgoing,
+                                                                       webRtcViewModel.getState(),
+                                                                       oldState.getAllRemoteParticipants().size(),
+                                                                       oldState.isViewingFocusedParticipant);
+
+    CallParticipant focused = oldState.remoteParticipants.isEmpty() ? null : oldState.remoteParticipants.get(0);
+
+    return new CallParticipantsState(webRtcViewModel.getState(),
+                                     webRtcViewModel.getRemoteParticipants(),
+                                     webRtcViewModel.getLocalParticipant(),
+                                     focused,
+                                     localRenderState,
+                                     oldState.isInPipMode,
+                                     newShowVideoForOutgoing,
+                                     oldState.isViewingFocusedParticipant);
+  }
+
+  public static @NonNull CallParticipantsState update(@NonNull CallParticipantsState oldState, boolean isInPip) {
+    WebRtcLocalRenderState localRenderState = determineLocalRenderMode(oldState.localParticipant,
+                                                                       isInPip,
+                                                                       oldState.showVideoForOutgoing,
+                                                                       oldState.callState,
+                                                                       oldState.getAllRemoteParticipants().size(),
+                                                                       oldState.isViewingFocusedParticipant);
+
+    CallParticipant focused = oldState.remoteParticipants.isEmpty() ? null : oldState.remoteParticipants.get(0);
+
+    return new CallParticipantsState(oldState.callState,
+                                     oldState.remoteParticipants,
+                                     oldState.localParticipant,
+                                     focused,
+                                     localRenderState,
+                                     isInPip,
+                                     oldState.showVideoForOutgoing,
+                                     oldState.isViewingFocusedParticipant);
+  }
+
+  public static @NonNull CallParticipantsState update(@NonNull CallParticipantsState oldState, @NonNull SelectedPage selectedPage) {
+    CallParticipant focused = oldState.remoteParticipants.isEmpty() ? null : oldState.remoteParticipants.get(0);
+
+    WebRtcLocalRenderState localRenderState = determineLocalRenderMode(oldState.localParticipant,
+                                                                       oldState.isInPipMode,
+                                                                       oldState.showVideoForOutgoing,
+                                                                       oldState.callState,
+                                                                       oldState.getAllRemoteParticipants().size(),
+                                                                       selectedPage == SelectedPage.FOCUSED);
+
+    return new CallParticipantsState(oldState.callState,
+                                     oldState.remoteParticipants,
+                                     oldState.localParticipant,
+                                     focused,
+                                     localRenderState,
+                                     oldState.isInPipMode,
+                                     oldState.showVideoForOutgoing,
+                                     selectedPage == SelectedPage.FOCUSED);
+  }
+
+  private static @NonNull WebRtcLocalRenderState determineLocalRenderMode(@NonNull CallParticipant localParticipant,
+                                                                          boolean isInPip,
+                                                                          boolean showVideoForOutgoing,
+                                                                          @NonNull WebRtcViewModel.State callState,
+                                                                          int numberOfRemoteParticipants,
+                                                                          boolean isViewingFocusedParticipant)
+  {
+    boolean                displayLocal     = !isInPip && localParticipant.isVideoEnabled();
+    WebRtcLocalRenderState localRenderState = WebRtcLocalRenderState.GONE;
+
+    if (displayLocal || showVideoForOutgoing) {
+      if (callState == WebRtcViewModel.State.CALL_CONNECTED) {
+        if (isViewingFocusedParticipant || numberOfRemoteParticipants > 3) {
+          localRenderState = WebRtcLocalRenderState.SMALL_SQUARE;
+        } else {
+          localRenderState = WebRtcLocalRenderState.SMALL_RECTANGLE;
+        }
+      } else if (callState != WebRtcViewModel.State.CALL_DISCONNECTED) {
+        localRenderState = WebRtcLocalRenderState.LARGE;
+      }
+    } else if (callState == WebRtcViewModel.State.CALL_PRE_JOIN) {
+      localRenderState = WebRtcLocalRenderState.LARGE_NO_VIDEO;
+    }
+
+    return localRenderState;
+  }
+
+  public enum SelectedPage {
+    GRID,
+    FOCUSED
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/PictureInPictureGestureHelper.java

@@ -9,6 +9,7 @@ import android.view.VelocityTracker;
 import android.view.View;
 import android.view.ViewConfiguration;
 import android.view.ViewGroup;
+import android.view.animation.AccelerateDecelerateInterpolator;
 import android.view.animation.Interpolator;
 
 import androidx.annotation.NonNull;
@@ -16,21 +17,26 @@ import androidx.core.view.GestureDetectorCompat;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.animation.AnimationCompleteListener;
-import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.util.views.TouchInterceptingFrameLayout;
 
 import java.util.Arrays;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.Queue;
 
 public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestureListener {
 
-  private static final float DECELERATION_RATE = 0.99f;
+  private static final float        DECELERATION_RATE   = 0.99f;
+  private static final Interpolator FLING_INTERPOLATOR  = new ViscousFluidInterpolator();
+  private static final Interpolator ADJUST_INTERPOLATOR = new AccelerateDecelerateInterpolator();
 
-  private final ViewGroup parent;
-  private final View      child;
-  private final int       framePadding;
-  private final int       pipWidth;
-  private final int       pipHeight;
+  private final ViewGroup       parent;
+  private final View            child;
+  private final int             framePadding;
+  private final Queue<Runnable> runAfterFling;
 
+  private int             pipWidth;
+  private int             pipHeight;
   private int             activePointerId = MotionEvent.INVALID_POINTER_ID;
   private float           lastTouchX;
   private float           lastTouchY;
@@ -42,6 +48,8 @@ public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestu
   private double          projectionY;
   private VelocityTracker velocityTracker;
   private int             maximumFlingVelocity;
+  private boolean         isLockedToBottomEnd;
+  private Interpolator    interpolator;
 
   @SuppressLint("ClickableViewAccessibility")
   public static PictureInPictureGestureHelper applyTo(@NonNull View child) {
@@ -95,6 +103,8 @@ public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestu
     this.pipWidth             = child.getResources().getDimensionPixelSize(R.dimen.picture_in_picture_gesture_helper_pip_width);
     this.pipHeight            = child.getResources().getDimensionPixelSize(R.dimen.picture_in_picture_gesture_helper_pip_height);
     this.maximumFlingVelocity = ViewConfiguration.get(child.getContext()).getScaledMaximumFlingVelocity();
+    this.runAfterFling        = new LinkedList<>();
+    this.interpolator         = ADJUST_INTERPOLATOR;
   }
 
   public void clearVerticalBoundaries() {
@@ -105,11 +115,7 @@ public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestu
     extraPaddingTop    = topBoundary - parent.getTop();
     extraPaddingBottom = parent.getMeasuredHeight() + parent.getTop() - bottomBoundary;
 
-    if (isAnimating) {
-      fling();
-    } else if (!isDragging) {
-      onFling(null, null, 0, 0);
-    }
+    adjustPip();
   }
 
   private boolean onGestureFinished(MotionEvent e) {
@@ -123,12 +129,46 @@ public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestu
     return false;
   }
 
+  public void adjustPip() {
+    pipWidth  = child.getMeasuredWidth();
+    pipHeight = child.getMeasuredHeight();
+
+    if (isAnimating) {
+      interpolator = ADJUST_INTERPOLATOR;
+
+      fling();
+    } else if (!isDragging) {
+      interpolator = ADJUST_INTERPOLATOR;
+
+      onFling(null, null, 0, 0);
+    }
+  }
+
+  public void lockToBottomEnd() {
+    isLockedToBottomEnd = true;
+  }
+
+  public void enableCorners() {
+    isLockedToBottomEnd = false;
+  }
+
+  public void performAfterFling(@NonNull Runnable runnable) {
+    if (isAnimating) {
+      runAfterFling.add(runnable);
+    } else {
+      runnable.run();
+    }
+  }
+
   @Override
   public boolean onDown(MotionEvent e) {
     activePointerId = e.getPointerId(0);
     lastTouchX      = e.getX(activePointerId) + child.getX();
     lastTouchY      = e.getY(activePointerId) + child.getY();
     isDragging      = true;
+    pipWidth        = child.getMeasuredWidth();
+    pipHeight       = child.getMeasuredHeight();
+    interpolator    = FLING_INTERPOLATOR;
 
     return true;
   }
@@ -167,6 +207,13 @@ public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestu
     return true;
   }
 
+  @Override
+  public boolean onSingleTapUp(MotionEvent e) {
+    child.performClick();
+
+    return true;
+  }
+
   private void fling() {
     Point  projection            = new Point((int) projectionX, (int) projectionY);
     Point  nearestCornerPosition = findNearestCornerPosition(projection);
@@ -178,17 +225,30 @@ public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestu
          .translationX(getTranslationXForPoint(nearestCornerPosition))
          .translationY(getTranslationYForPoint(nearestCornerPosition))
          .setDuration(250)
-         .setInterpolator(new ViscousFluidInterpolator())
+         .setInterpolator(interpolator)
          .setListener(new AnimationCompleteListener() {
            @Override
            public void onAnimationEnd(Animator animation) {
              isAnimating = false;
+
+             Iterator<Runnable> afterFlingRunnables = runAfterFling.iterator();
+             while (afterFlingRunnables.hasNext()) {
+               Runnable runnable = afterFlingRunnables.next();
+
+               runnable.run();
+               afterFlingRunnables.remove();
+             }
            }
          })
          .start();
   }
 
   private Point findNearestCornerPosition(Point projection) {
+    if (isLockedToBottomEnd) {
+      return parent.getLayoutDirection() == View.LAYOUT_DIRECTION_LTR ? calculateBottomRightCoordinates(parent)
+                                                                      : calculateBottomLeftCoordinates(parent);
+    }
+
     Point  maxPoint     = null;
     double maxDistance  = Double.MAX_VALUE;
 

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/TextureViewRenderer.java

@@ -36,6 +36,8 @@ public class TextureViewRenderer extends TextureView implements TextureView.Surf
   private boolean                       enableFixedSize;
   private int                           surfaceWidth;
   private int                           surfaceHeight;
+  private boolean                       isInitialized;
+  private BroadcastVideoSink            attachedVideoSink;
 
   public TextureViewRenderer(@NonNull Context context) {
     super(context);
@@ -49,8 +51,12 @@ public class TextureViewRenderer extends TextureView implements TextureView.Surf
     this.setSurfaceTextureListener(this);
   }
 
-  public void init(@NonNull EglBase.Context sharedContext, @NonNull RendererCommon.RendererEvents rendererEvents) {
-    this.init(sharedContext, rendererEvents, EglBase.CONFIG_PLAIN, new GlRectDrawer());
+  public void init(@NonNull EglBase eglBase) {
+    if (isInitialized) return;
+
+    isInitialized = true;
+
+    this.init(eglBase.getEglBaseContext(), null, EglBase.CONFIG_PLAIN, new GlRectDrawer());
   }
 
   public void init(@NonNull EglBase.Context sharedContext, @NonNull RendererCommon.RendererEvents rendererEvents, @NonNull int[] configAttributes, @NonNull RendererCommon.GlDrawer drawer) {
@@ -63,6 +69,30 @@ public class TextureViewRenderer extends TextureView implements TextureView.Surf
     this.eglRenderer.init(sharedContext, this, configAttributes, drawer);
   }
 
+  public void attachBroadcastVideoSink(@Nullable BroadcastVideoSink videoSink) {
+    if (attachedVideoSink == videoSink) {
+      return;
+    }
+
+    if (attachedVideoSink != null) {
+      attachedVideoSink.removeSink(this);
+    }
+
+    if (videoSink != null) {
+      videoSink.addSink(this);
+    } else {
+      clearImage();
+    }
+
+    attachedVideoSink = videoSink;
+  }
+
+  @Override
+  protected void onDetachedFromWindow() {
+    super.onDetachedFromWindow();
+    release();
+  }
+
   public void release() {
     eglRenderer.release();
   }
@@ -125,6 +155,9 @@ public class TextureViewRenderer extends TextureView implements TextureView.Surf
   protected void onMeasure(int widthSpec, int heightSpec) {
     ThreadUtils.checkIsOnMainThread();
 
+    widthSpec  = MeasureSpec.makeMeasureSpec(resolveSizeAndState(0, widthSpec, 0), MeasureSpec.AT_MOST);
+    heightSpec = MeasureSpec.makeMeasureSpec(resolveSizeAndState(0, heightSpec, 0), MeasureSpec.AT_MOST);
+
     Point size = videoLayoutMeasure.measure(widthSpec, heightSpec, this.rotatedFrameWidth, this.rotatedFrameHeight);
 
     setMeasuredDimension(size.x, size.y);

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallParticipantsPage.java

@@ -0,0 +1,64 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import androidx.annotation.NonNull;
+
+import org.thoughtcrime.securesms.events.CallParticipant;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+class WebRtcCallParticipantsPage {
+
+  private final List<CallParticipant> callParticipants;
+  private final boolean               isSpeaker;
+  private final boolean               isRenderInPip;
+  
+  static WebRtcCallParticipantsPage forMultipleParticipants(@NonNull List<CallParticipant> callParticipants,
+                                                            boolean isRenderInPip) 
+  {
+    return new WebRtcCallParticipantsPage(callParticipants, false, isRenderInPip);
+  }
+  
+  static WebRtcCallParticipantsPage forSingleParticipant(@NonNull CallParticipant singleParticipant,
+                                                         boolean isRenderInPip)
+  {
+    return new WebRtcCallParticipantsPage(Collections.singletonList(singleParticipant), true, isRenderInPip);
+  }
+
+  private WebRtcCallParticipantsPage(@NonNull List<CallParticipant> callParticipants,
+                                     boolean isSpeaker,
+                                     boolean isRenderInPip) 
+  {
+    this.callParticipants = callParticipants;
+    this.isSpeaker        = isSpeaker;
+    this.isRenderInPip    = isRenderInPip;
+  }
+
+  public @NonNull List<CallParticipant> getCallParticipants() {
+    return callParticipants;
+  }
+
+  public boolean isRenderInPip() {
+    return isRenderInPip;
+  }
+
+  public boolean isSpeaker() {
+    return isSpeaker;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    WebRtcCallParticipantsPage that = (WebRtcCallParticipantsPage) o;
+    return isSpeaker == that.isSpeaker &&
+        isRenderInPip == that.isRenderInPip &&
+        callParticipants.equals(that.callParticipants);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(callParticipants, isSpeaker);
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallParticipantsPagerAdapter.java

@@ -0,0 +1,127 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListAdapter;
+import androidx.recyclerview.widget.RecyclerView;
+
+import org.thoughtcrime.securesms.R;
+
+class WebRtcCallParticipantsPagerAdapter extends ListAdapter<WebRtcCallParticipantsPage, WebRtcCallParticipantsPagerAdapter.ViewHolder> {
+
+  private static final int VIEW_TYPE_MULTI  = 0;
+  private static final int VIEW_TYPE_SINGLE = 1;
+
+  private final Runnable onPageClicked;
+
+  WebRtcCallParticipantsPagerAdapter(@NonNull Runnable onPageClicked) {
+    super(new DiffCallback());
+    this.onPageClicked = onPageClicked;
+  }
+
+  @Override
+  public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
+    super.onAttachedToRecyclerView(recyclerView);
+    recyclerView.setOverScrollMode(View.OVER_SCROLL_NEVER);
+  }
+
+  @Override
+  public @NonNull ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+    final ViewHolder viewHolder;
+
+    switch (viewType) {
+      case VIEW_TYPE_SINGLE:
+        viewHolder = new SingleParticipantViewHolder((CallParticipantView) LayoutInflater.from(parent.getContext())
+            .inflate(R.layout.call_participant_item,
+                parent,
+                false));
+        break;
+      case VIEW_TYPE_MULTI:
+        viewHolder = new MultipleParticipantViewHolder((CallParticipantsLayout) LayoutInflater.from(parent.getContext())
+            .inflate(R.layout.webrtc_call_participants_layout,
+                parent,
+                false));
+        break;
+      default:
+        throw new IllegalArgumentException("Unsupported viewType: " + viewType);
+    }
+
+    viewHolder.itemView.setOnClickListener(unused -> onPageClicked.run());
+
+    return viewHolder;
+  }
+
+  @Override
+  public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+    holder.bind(getItem(position));
+  }
+
+  @Override
+  public int getItemViewType(int position) {
+    return getItem(position).isSpeaker() ? VIEW_TYPE_SINGLE : VIEW_TYPE_MULTI;
+  }
+
+  static abstract class ViewHolder extends RecyclerView.ViewHolder {
+    public ViewHolder(@NonNull View itemView) {
+      super(itemView);
+    }
+
+    abstract void bind(WebRtcCallParticipantsPage page);
+  }
+
+  private static class MultipleParticipantViewHolder extends ViewHolder {
+
+    private final CallParticipantsLayout callParticipantsLayout;
+
+    private MultipleParticipantViewHolder(@NonNull CallParticipantsLayout callParticipantsLayout) {
+      super(callParticipantsLayout);
+      this.callParticipantsLayout = callParticipantsLayout;
+    }
+
+    @Override
+    void bind(WebRtcCallParticipantsPage page) {
+      callParticipantsLayout.update(page.getCallParticipants(), page.isRenderInPip());
+    }
+  }
+
+  private static class SingleParticipantViewHolder extends ViewHolder {
+
+    private final CallParticipantView callParticipantView;
+
+    private SingleParticipantViewHolder(CallParticipantView callParticipantView) {
+      super(callParticipantView);
+      this.callParticipantView = callParticipantView;
+
+      ViewGroup.LayoutParams params = callParticipantView.getLayoutParams();
+
+      params.height = ViewGroup.LayoutParams.MATCH_PARENT;
+      params.width  = ViewGroup.LayoutParams.MATCH_PARENT;
+
+      callParticipantView.setLayoutParams(params);
+    }
+
+
+    @Override
+    void bind(WebRtcCallParticipantsPage page) {
+      callParticipantView.setCallParticipant(page.getCallParticipants().get(0));
+      callParticipantView.setRenderInPip(page.isRenderInPip());
+    }
+  }
+
+  private static final class DiffCallback extends DiffUtil.ItemCallback<WebRtcCallParticipantsPage> {
+    @Override
+    public boolean areItemsTheSame(@NonNull WebRtcCallParticipantsPage oldItem, @NonNull WebRtcCallParticipantsPage newItem) {
+      return oldItem.isSpeaker() == newItem.isSpeaker();
+    }
+
+    @Override
+    public boolean areContentsTheSame(@NonNull WebRtcCallParticipantsPage oldItem, @NonNull WebRtcCallParticipantsPage newItem) {
+      return oldItem.equals(newItem);
+    }
+  }
+
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallParticipantsRecyclerAdapter.java

@@ -0,0 +1,79 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListAdapter;
+import androidx.recyclerview.widget.RecyclerView;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.events.CallParticipant;
+
+class WebRtcCallParticipantsRecyclerAdapter extends ListAdapter<CallParticipant, WebRtcCallParticipantsRecyclerAdapter.ViewHolder> {
+
+  private static final int PARTICIPANT = 0;
+  private static final int EMPTY       = 1;
+
+  protected WebRtcCallParticipantsRecyclerAdapter() {
+    super(new DiffCallback());
+  }
+
+  @Override
+  public @NonNull ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+    if (viewType == PARTICIPANT) {
+      return new ParticipantViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.webrtc_call_participant_recycler_item, parent, false));
+    } else {
+      return new ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.webrtc_call_participant_recycler_empty_item, parent, false));
+    }
+  }
+
+  @Override
+  public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+    holder.bind(getItem(position));
+  }
+
+  @Override
+  public int getItemViewType(int position) {
+    return getItem(position) == CallParticipant.EMPTY ? EMPTY : PARTICIPANT;
+  }
+
+  static class ViewHolder extends RecyclerView.ViewHolder {
+    ViewHolder(@NonNull View itemView) {
+      super(itemView);
+    }
+
+    void bind(@NonNull CallParticipant callParticipant) {}
+  }
+
+  private static class ParticipantViewHolder extends ViewHolder {
+
+    private final CallParticipantView callParticipantView;
+
+    ParticipantViewHolder(@NonNull View itemView) {
+      super(itemView);
+      callParticipantView = itemView.findViewById(R.id.call_participant);
+    }
+
+    @Override
+    void bind(@NonNull CallParticipant callParticipant) {
+      callParticipantView.setCallParticipant(callParticipant);
+    }
+  }
+
+  private static class DiffCallback extends DiffUtil.ItemCallback<CallParticipant> {
+
+    @Override
+    public boolean areItemsTheSame(@NonNull CallParticipant oldItem, @NonNull CallParticipant newItem) {
+      return oldItem.getRecipient().equals(newItem.getRecipient());
+    }
+
+    @Override
+    public boolean areContentsTheSame(@NonNull CallParticipant oldItem, @NonNull CallParticipant newItem) {
+      return oldItem.equals(newItem);
+    }
+  }
+
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallView.java

@@ -1,11 +1,13 @@
 package org.thoughtcrime.securesms.components.webrtc;
 
 import android.content.Context;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.ViewParent;
+import android.view.animation.Animation;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.TextView;
@@ -13,67 +15,85 @@ import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.content.res.AppCompatResources;
+import androidx.appcompat.widget.Toolbar;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.constraintlayout.widget.ConstraintSet;
 import androidx.constraintlayout.widget.Guideline;
 import androidx.core.util.Consumer;
+import androidx.recyclerview.widget.RecyclerView;
 import androidx.transition.AutoTransition;
+import androidx.transition.ChangeBounds;
 import androidx.transition.Transition;
 import androidx.transition.TransitionManager;
+import androidx.transition.TransitionSet;
+import androidx.viewpager2.widget.MarginPageTransformer;
+import androidx.viewpager2.widget.ViewPager2;
 
 import com.bumptech.glide.load.engine.DiskCacheStrategy;
+import com.bumptech.glide.load.resource.bitmap.CenterCrop;
 
 import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.animation.ResizeAnimation;
 import org.thoughtcrime.securesms.components.AccessibleToggleButton;
-import org.thoughtcrime.securesms.components.AvatarImageView;
-import org.thoughtcrime.securesms.contacts.avatars.ContactPhoto;
-import org.thoughtcrime.securesms.contacts.avatars.FallbackContactPhoto;
-import org.thoughtcrime.securesms.contacts.avatars.ResourceContactPhoto;
+import org.thoughtcrime.securesms.contacts.avatars.ProfileContactPhoto;
+import org.thoughtcrime.securesms.events.CallParticipant;
+import org.thoughtcrime.securesms.mediasend.SimpleAnimationListener;
 import org.thoughtcrime.securesms.mms.GlideApp;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.ringrtc.CameraState;
-import org.thoughtcrime.securesms.util.AvatarUtil;
+import org.thoughtcrime.securesms.util.BlurTransformation;
 import org.thoughtcrime.securesms.util.SetUtil;
 import org.thoughtcrime.securesms.util.ViewUtil;
 import org.webrtc.RendererCommon;
 import org.whispersystems.signalservice.api.messages.calls.HangupMessage;
 
+import java.util.ArrayList;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
 
 public class WebRtcCallView extends FrameLayout {
 
-  private static final long                  TRANSITION_DURATION_MILLIS          = 250;
-  private static final int                   SMALL_ONGOING_CALL_BUTTON_MARGIN_DP = 8;
-  private static final int                   LARGE_ONGOING_CALL_BUTTON_MARGIN_DP = 16;
-  private static final FallbackPhotoProvider FALLBACK_PHOTO_PROVIDER    = new FallbackPhotoProvider();
+  private static final long TRANSITION_DURATION_MILLIS          = 250;
+  private static final int  SMALL_ONGOING_CALL_BUTTON_MARGIN_DP = 8;
+  private static final int  LARGE_ONGOING_CALL_BUTTON_MARGIN_DP = 16;
 
-  public static final int FADE_OUT_DELAY = 5000;
+  public static final int FADE_OUT_DELAY      = 5000;
+  public static final int PIP_RESIZE_DURATION = 300;
+  public static final int CONTROLS_HEIGHT     = 98;
 
-  private TextureViewRenderer           localRenderer;
   private WebRtcAudioOutputToggleButton audioToggle;
   private AccessibleToggleButton        videoToggle;
   private AccessibleToggleButton        micToggle;
-  private ViewGroup                     largeLocalRenderContainer;
-  private ViewGroup                     localRenderPipFrame;
-  private ViewGroup                     smallLocalRenderContainer;
-  private ViewGroup                     remoteRenderContainer;
+  private ViewGroup                     smallLocalRenderFrame;
+  private TextureViewRenderer           smallLocalRender;
+  private View                          largeLocalRenderFrame;
+  private TextureViewRenderer           largeLocalRender;
+  private View                          largeLocalRenderNoVideo;
+  private ImageView                     largeLocalRenderNoVideoAvatar;
   private TextView                      recipientName;
   private TextView                      status;
   private ConstraintLayout              parent;
-  private AvatarImageView               avatar;
-  private ImageView                     avatarCard;
+  private ConstraintLayout              participantsParent;
   private ControlsListener              controlsListener;
   private RecipientId                   recipientId;
-  private CameraState.Direction         cameraDirection;
   private ImageView                     answer;
   private ImageView                     cameraDirectionToggle;
   private PictureInPictureGestureHelper pictureInPictureGestureHelper;
   private ImageView                     hangup;
   private View                          answerWithAudio;
   private View                          answerWithAudioLabel;
-  private View                          ongoingFooterGradient;
+  private View                          footerGradient;
+  private View                          startCallControls;
+  private ViewPager2                    callParticipantsPager;
+  private RecyclerView                  callParticipantsRecycler;
+  private Toolbar                       toolbar;
+  private int                           pagerBottomMarginDp;
+  private boolean                       controlsVisible = true;
+
+  private WebRtcCallParticipantsPagerAdapter    pagerAdapter;
+  private WebRtcCallParticipantsRecyclerAdapter recyclerAdapter;
 
   private final Set<View> incomingCallViews    = new HashSet<>();
   private final Set<View> topViews             = new HashSet<>();
@@ -82,7 +102,8 @@ public class WebRtcCallView extends FrameLayout {
 
   private       WebRtcControls controls        = WebRtcControls.NONE;
   private final Runnable       fadeOutRunnable = () -> {
-    if (isAttachedToWindow() && controls.isFadeOutEnabled()) fadeOutControls(); };
+    if (isAttachedToWindow() && controls.isFadeOutEnabled()) fadeOutControls();
+  };
 
   public WebRtcCallView(@NonNull Context context) {
     this(context, null);
@@ -99,42 +120,61 @@ public class WebRtcCallView extends FrameLayout {
   protected void onFinishInflate() {
     super.onFinishInflate();
 
-    audioToggle               = findViewById(R.id.call_screen_speaker_toggle);
-    videoToggle               = findViewById(R.id.call_screen_video_toggle);
-    micToggle                 = findViewById(R.id.call_screen_audio_mic_toggle);
-    localRenderPipFrame       = findViewById(R.id.call_screen_pip);
-    largeLocalRenderContainer = findViewById(R.id.call_screen_large_local_renderer_holder);
-    smallLocalRenderContainer = findViewById(R.id.call_screen_small_local_renderer_holder);
-    remoteRenderContainer     = findViewById(R.id.call_screen_remote_renderer_holder);
-    recipientName             = findViewById(R.id.call_screen_recipient_name);
-    status                    = findViewById(R.id.call_screen_status);
-    parent                    = findViewById(R.id.call_screen);
-    avatar                    = findViewById(R.id.call_screen_recipient_avatar);
-    avatarCard                = findViewById(R.id.call_screen_recipient_avatar_call_card);
-    answer                    = findViewById(R.id.call_screen_answer_call);
-    cameraDirectionToggle     = findViewById(R.id.call_screen_camera_direction_toggle);
-    hangup                    = findViewById(R.id.call_screen_end_call);
-    answerWithAudio           = findViewById(R.id.call_screen_answer_with_audio);
-    answerWithAudioLabel      = findViewById(R.id.call_screen_answer_with_audio_label);
-    ongoingFooterGradient     = findViewById(R.id.call_screen_ongoing_footer_gradient);
+    audioToggle                   = findViewById(R.id.call_screen_speaker_toggle);
+    videoToggle                   = findViewById(R.id.call_screen_video_toggle);
+    micToggle                     = findViewById(R.id.call_screen_audio_mic_toggle);
+    smallLocalRenderFrame         = findViewById(R.id.call_screen_pip);
+    smallLocalRender              = findViewById(R.id.call_screen_small_local_renderer);
+    largeLocalRenderFrame         = findViewById(R.id.call_screen_large_local_renderer_frame);
+    largeLocalRender              = findViewById(R.id.call_screen_large_local_renderer);
+    largeLocalRenderNoVideo       = findViewById(R.id.call_screen_large_local_video_off);
+    largeLocalRenderNoVideoAvatar = findViewById(R.id.call_screen_large_local_video_off_avatar);
+    recipientName                 = findViewById(R.id.call_screen_recipient_name);
+    status                        = findViewById(R.id.call_screen_status);
+    parent                        = findViewById(R.id.call_screen);
+    participantsParent            = findViewById(R.id.call_screen_participants_parent);
+    answer                        = findViewById(R.id.call_screen_answer_call);
+    cameraDirectionToggle         = findViewById(R.id.call_screen_camera_direction_toggle);
+    hangup                        = findViewById(R.id.call_screen_end_call);
+    answerWithAudio               = findViewById(R.id.call_screen_answer_with_audio);
+    answerWithAudioLabel          = findViewById(R.id.call_screen_answer_with_audio_label);
+    footerGradient                = findViewById(R.id.call_screen_footer_gradient);
+    startCallControls             = findViewById(R.id.call_screen_start_call_controls);
+    callParticipantsPager         = findViewById(R.id.call_screen_participants_pager);
+    callParticipantsRecycler      = findViewById(R.id.call_screen_participants_recycler);
+    toolbar                       = findViewById(R.id.call_screen_toolbar);
 
     View      topGradient            = findViewById(R.id.call_screen_header_gradient);
-    View      downCaret              = findViewById(R.id.call_screen_down_arrow);
     View      decline                = findViewById(R.id.call_screen_decline_call);
     View      answerLabel            = findViewById(R.id.call_screen_answer_call_label);
     View      declineLabel           = findViewById(R.id.call_screen_decline_call_label);
-    View      incomingFooterGradient = findViewById(R.id.call_screen_incoming_footer_gradient);
     Guideline statusBarGuideline     = findViewById(R.id.call_screen_status_bar_guideline);
+    View      startCall              = findViewById(R.id.call_screen_start_call_start_call);
+    View      cancelStartCall        = findViewById(R.id.call_screen_start_call_cancel);
 
-    topViews.add(status);
+    callParticipantsPager.setPageTransformer(new MarginPageTransformer(ViewUtil.dpToPx(4)));
+
+    pagerAdapter    = new WebRtcCallParticipantsPagerAdapter(this::toggleControls);
+    recyclerAdapter = new WebRtcCallParticipantsRecyclerAdapter();
+
+    callParticipantsPager.setAdapter(pagerAdapter);
+    callParticipantsRecycler.setAdapter(recyclerAdapter);
+
+    callParticipantsPager.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
+      @Override
+      public void onPageSelected(int position) {
+        runIfNonNull(controlsListener, listener -> listener.onPageChanged(position == 0 ? CallParticipantsState.SelectedPage.GRID : CallParticipantsState.SelectedPage.FOCUSED));
+      }
+    });
+
+    topViews.add(toolbar);
     topViews.add(topGradient);
-    topViews.add(recipientName);
 
     incomingCallViews.add(answer);
     incomingCallViews.add(answerLabel);
     incomingCallViews.add(decline);
     incomingCallViews.add(declineLabel);
-    incomingCallViews.add(incomingFooterGradient);
+    incomingCallViews.add(footerGradient);
 
     adjustableMarginsSet.add(micToggle);
     adjustableMarginsSet.add(cameraDirectionToggle);
@@ -158,15 +198,18 @@ public class WebRtcCallView extends FrameLayout {
     hangup.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onEndCallPressed));
     decline.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onDenyCallPressed));
 
-    downCaret.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onDownCaretPressed));
-
     answer.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onAcceptCallPressed));
     answerWithAudio.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onAcceptCallWithVoiceOnlyPressed));
 
-    setOnClickListener(v -> toggleControls());
-    avatar.setOnClickListener(v -> toggleControls());
+    pictureInPictureGestureHelper = PictureInPictureGestureHelper.applyTo(smallLocalRenderFrame);
 
-    pictureInPictureGestureHelper = PictureInPictureGestureHelper.applyTo(localRenderPipFrame);
+    startCall.setOnClickListener(v -> runIfNonNull(controlsListener, listener -> listener.onStartCall(videoToggle.isChecked())));
+    cancelStartCall.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onCancelStartCall));
+
+    ColorMatrix greyScaleMatrix = new ColorMatrix();
+    greyScaleMatrix.setSaturation(0);
+    largeLocalRenderNoVideoAvatar.setAlpha(0.6f);
+    largeLocalRenderNoVideoAvatar.setColorFilter(new ColorMatrixColorFilter(greyScaleMatrix));
 
     int statusBarHeight = ViewUtil.getStatusBarHeight(this);
     statusBarGuideline.setGuidelineBegin(statusBarHeight);
@@ -195,67 +238,99 @@ public class WebRtcCallView extends FrameLayout {
     micToggle.setChecked(isMicEnabled, false);
   }
 
-  public void setRemoteVideoEnabled(boolean isRemoteVideoEnabled) {
-    if (isRemoteVideoEnabled) {
-      remoteRenderContainer.setVisibility(View.VISIBLE);
+  public void updateCallParticipants(@NonNull CallParticipantsState state) {
+    List<WebRtcCallParticipantsPage> pages = new ArrayList<>(2);
+
+    if (!state.getGridParticipants().isEmpty()) {
+      pages.add(WebRtcCallParticipantsPage.forMultipleParticipants(state.getGridParticipants(), state.isInPipMode()));
+    }
+
+    if (state.getFocusedParticipant() != null && state.getAllRemoteParticipants().size() > 1) {
+      pages.add(WebRtcCallParticipantsPage.forSingleParticipant(state.getFocusedParticipant(), state.isInPipMode()));
+    }
+
+    pagerAdapter.submitList(pages);
+    recyclerAdapter.submitList(state.getListParticipants());
+    updateLocalCallParticipant(state.getLocalRenderState(), state.getLocalParticipant());
+
+    if (state.isLargeVideoGroup()) {
+      layoutParticipantsForLargeCount();
     } else {
-      remoteRenderContainer.setVisibility(View.GONE);
+      layoutParticipantsForSmallCount();
     }
   }
 
-  public void setLocalRenderer(@Nullable TextureViewRenderer surfaceViewRenderer) {
-    if (localRenderer == surfaceViewRenderer) {
-      return;
+  public void updateLocalCallParticipant(@NonNull WebRtcLocalRenderState state, @NonNull CallParticipant localCallParticipant) {
+    smallLocalRender.setMirror(localCallParticipant.getCameraDirection() == CameraState.Direction.FRONT);
+    largeLocalRender.setMirror(localCallParticipant.getCameraDirection() == CameraState.Direction.FRONT);
+
+    smallLocalRender.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FILL);
+    largeLocalRender.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FILL);
+
+    if (localCallParticipant.getVideoSink().getEglBase() != null) {
+      smallLocalRender.init(localCallParticipant.getVideoSink().getEglBase());
+      largeLocalRender.init(localCallParticipant.getVideoSink().getEglBase());
     }
 
-    localRenderer = surfaceViewRenderer;
-
-    if (surfaceViewRenderer == null) {
-      setRenderer(largeLocalRenderContainer, null);
-      setRenderer(smallLocalRenderContainer, null);
-    } else {
-      localRenderer.setMirror(cameraDirection == CameraState.Direction.FRONT);
-      localRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT);
-    }
-  }
-
-  public void setRemoteRenderer(@Nullable TextureViewRenderer remoteRenderer) {
-    setRenderer(remoteRenderContainer, remoteRenderer);
-  }
-
-  public void setLocalRenderState(WebRtcLocalRenderState localRenderState) {
-
-    videoToggle.setChecked(localRenderState != WebRtcLocalRenderState.GONE, false);
-
-    switch (localRenderState) {
+    switch (state) {
       case GONE:
-        localRenderPipFrame.setVisibility(View.GONE);
-        largeLocalRenderContainer.setVisibility(View.GONE);
-        setRenderer(largeLocalRenderContainer, null);
-        setRenderer(smallLocalRenderContainer, null);
+        largeLocalRender.attachBroadcastVideoSink(null);
+        largeLocalRenderFrame.setVisibility(View.GONE);
+        smallLocalRender.attachBroadcastVideoSink(null);
+        smallLocalRenderFrame.setVisibility(View.GONE);
+
+        videoToggle.setChecked(false, false);
+        break;
+      case SMALL_RECTANGLE:
+        smallLocalRenderFrame.setVisibility(View.VISIBLE);
+        smallLocalRender.attachBroadcastVideoSink(localCallParticipant.getVideoSink());
+        animatePipToRectangle();
+
+        largeLocalRender.attachBroadcastVideoSink(null);
+        largeLocalRenderFrame.setVisibility(View.GONE);
+
+        videoToggle.setChecked(true, false);
+        break;
+      case SMALL_SQUARE:
+        smallLocalRenderFrame.setVisibility(View.VISIBLE);
+        smallLocalRender.attachBroadcastVideoSink(localCallParticipant.getVideoSink());
+        animatePipToSquare();
+
+        largeLocalRender.attachBroadcastVideoSink(null);
+        largeLocalRenderFrame.setVisibility(View.GONE);
+
+        videoToggle.setChecked(true, false);
         break;
       case LARGE:
-        localRenderPipFrame.setVisibility(View.GONE);
-        largeLocalRenderContainer.setVisibility(View.VISIBLE);
-        if (largeLocalRenderContainer.getChildCount() == 0) {
-          setRenderer(largeLocalRenderContainer, localRenderer);
-        }
+        largeLocalRender.attachBroadcastVideoSink(localCallParticipant.getVideoSink());
+        largeLocalRenderFrame.setVisibility(View.VISIBLE);
+
+        largeLocalRenderNoVideo.setVisibility(View.GONE);
+        largeLocalRenderNoVideoAvatar.setVisibility(View.GONE);
+
+        smallLocalRender.attachBroadcastVideoSink(null);
+        smallLocalRenderFrame.setVisibility(View.GONE);
+
+        videoToggle.setChecked(true, false);
         break;
-      case SMALL:
-        localRenderPipFrame.setVisibility(View.VISIBLE);
-        largeLocalRenderContainer.setVisibility(View.GONE);
+      case LARGE_NO_VIDEO:
+        largeLocalRender.attachBroadcastVideoSink(null);
+        largeLocalRenderFrame.setVisibility(View.VISIBLE);
 
-        if (smallLocalRenderContainer.getChildCount() == 0) {
-          setRenderer(smallLocalRenderContainer, localRenderer);
-        }
-    }
-  }
+        largeLocalRenderNoVideo.setVisibility(View.VISIBLE);
+        largeLocalRenderNoVideoAvatar.setVisibility(View.VISIBLE);
 
-  public void setCameraDirection(@NonNull CameraState.Direction cameraDirection) {
-    this.cameraDirection = cameraDirection;
+        GlideApp.with(getContext().getApplicationContext())
+                .load(new ProfileContactPhoto(localCallParticipant.getRecipient(), localCallParticipant.getRecipient().getProfileAvatar()))
+                .transform(new CenterCrop(), new BlurTransformation(getContext(), 0.25f, BlurTransformation.MAX_RADIUS))
+                .diskCacheStrategy(DiskCacheStrategy.ALL)
+                .into(largeLocalRenderNoVideoAvatar);
 
-    if (localRenderer != null) {
-      localRenderer.setMirror(cameraDirection == CameraState.Direction.FRONT);
+        smallLocalRender.attachBroadcastVideoSink(null);
+        smallLocalRenderFrame.setVisibility(View.GONE);
+
+        videoToggle.setChecked(false, false);
+        break;
     }
   }
 
@@ -265,17 +340,16 @@ public class WebRtcCallView extends FrameLayout {
     }
 
     recipientId = recipient.getId();
-    recipientName.setText(recipient.getDisplayName(getContext()));
-    avatar.setFallbackPhotoProvider(FALLBACK_PHOTO_PROVIDER);
-    avatar.setAvatar(GlideApp.with(this), recipient, false);
-    AvatarUtil.loadBlurredIconIntoViewBackground(recipient, this);
 
-    setRecipientCallCard(recipient);
-  }
-
-  public void showCallCard(boolean showCallCard) {
-    avatarCard.setVisibility(showCallCard ? VISIBLE : GONE);
-    avatar.setVisibility(showCallCard ? GONE : VISIBLE);
+    if (recipient.isGroup()) {
+      recipientName.setText(R.string.WebRtcCallView__group_call);
+      if (toolbar.getMenu().findItem(R.id.menu_group_call_participants_list) == null) {
+        toolbar.inflateMenu(R.menu.group_call);
+        toolbar.setOnMenuItemClickListener(unused -> showParticipantsList());
+      }
+    } else {
+      recipientName.setText(recipient.getDisplayName(getContext()));
+    }
   }
 
   public void setStatus(@NonNull String status) {
@@ -302,11 +376,16 @@ public class WebRtcCallView extends FrameLayout {
     }
   }
 
-  public void setWebRtcControls(WebRtcControls webRtcControls) {
+  public void setWebRtcControls(@NonNull WebRtcControls webRtcControls) {
     Set<View> lastVisibleSet = new HashSet<>(visibleViewSet);
 
     visibleViewSet.clear();
 
+    if (webRtcControls.displayStartCallControls()) {
+      visibleViewSet.add(footerGradient);
+      visibleViewSet.add(startCallControls);
+    }
+
     if (webRtcControls.displayTopViews()) {
       visibleViewSet.addAll(topViews);
     }
@@ -341,7 +420,7 @@ public class WebRtcCallView extends FrameLayout {
 
     if (webRtcControls.displayEndCall()) {
       visibleViewSet.add(hangup);
-      visibleViewSet.add(ongoingFooterGradient);
+      visibleViewSet.add(footerGradient);
     }
 
     if (webRtcControls.displayMuteAudio()) {
@@ -358,6 +437,12 @@ public class WebRtcCallView extends FrameLayout {
       updateButtonStateForLargeButtons();
     }
 
+    if (webRtcControls.displayRemoteVideoRecycler()) {
+      callParticipantsRecycler.setVisibility(View.VISIBLE);
+    } else {
+      callParticipantsRecycler.setVisibility(View.GONE);
+    }
+
     if (webRtcControls.isFadeOutEnabled()) {
       if (!controls.isFadeOutEnabled()) {
         scheduleFadeOut();
@@ -370,7 +455,7 @@ public class WebRtcCallView extends FrameLayout {
 
     if (!visibleViewSet.equals(lastVisibleSet) || !controls.isFadeOutEnabled()) {
       fadeInNewUiState(lastVisibleSet, webRtcControls.displaySmallOngoingCallButtons());
-      post(() -> pictureInPictureGestureHelper.setVerticalBoundaries(status.getBottom(), videoToggle.getTop()));
+      post(() -> pictureInPictureGestureHelper.setVerticalBoundaries(toolbar.getBottom(), videoToggle.getTop()));
     }
   }
 
@@ -378,8 +463,39 @@ public class WebRtcCallView extends FrameLayout {
     return videoToggle;
   }
 
+  private void animatePipToRectangle() {
+    ResizeAnimation animation = new ResizeAnimation(smallLocalRenderFrame, ViewUtil.dpToPx(90), ViewUtil.dpToPx(160));
+    animation.setDuration(PIP_RESIZE_DURATION);
+    animation.setAnimationListener(new SimpleAnimationListener() {
+      @Override
+      public void onAnimationEnd(Animation animation) {
+        pictureInPictureGestureHelper.enableCorners();
+        pictureInPictureGestureHelper.adjustPip();
+      }
+    });
+
+    smallLocalRenderFrame.startAnimation(animation);
+  }
+
+  private void animatePipToSquare() {
+    pictureInPictureGestureHelper.lockToBottomEnd();
+
+    pictureInPictureGestureHelper.performAfterFling(() -> {
+      ResizeAnimation animation = new ResizeAnimation(smallLocalRenderFrame, ViewUtil.dpToPx(72), ViewUtil.dpToPx(72));
+      animation.setDuration(PIP_RESIZE_DURATION);
+      animation.setAnimationListener(new SimpleAnimationListener() {
+        @Override
+        public void onAnimationEnd(Animation animation) {
+          pictureInPictureGestureHelper.adjustPip();
+        }
+      });
+
+      smallLocalRenderFrame.startAnimation(animation);
+    });
+  }
+
   private void toggleControls() {
-    if (controls.isFadeOutEnabled() && status.getVisibility() == VISIBLE) {
+    if (controls.isFadeOutEnabled() && toolbar.getVisibility() == VISIBLE) {
       fadeOutControls();
     } else {
       fadeInControls();
@@ -394,14 +510,49 @@ public class WebRtcCallView extends FrameLayout {
 
   private void fadeInControls() {
     fadeControls(ConstraintSet.VISIBLE);
-    pictureInPictureGestureHelper.setVerticalBoundaries(status.getBottom(), videoToggle.getTop());
+    pictureInPictureGestureHelper.setVerticalBoundaries(toolbar.getBottom(), videoToggle.getTop());
 
     scheduleFadeOut();
   }
 
-  private void fadeControls(int visibility) {
+  private void layoutParticipantsForSmallCount() {
+    pagerBottomMarginDp = 0;
+
+    layoutParticipants();
+  }
+
+  private void layoutParticipantsForLargeCount() {
+    pagerBottomMarginDp = 104;
+
+    layoutParticipants();
+  }
+
+  private int withControlsHeight(int margin) {
+    if (margin == 0) {
+      return 0;
+    }
+
+    return controlsVisible ? margin + CONTROLS_HEIGHT : margin;
+  }
+
+  private void layoutParticipants() {
     Transition transition = new AutoTransition().setDuration(TRANSITION_DURATION_MILLIS);
 
+    TransitionManager.beginDelayedTransition(participantsParent, transition);
+
+    ConstraintSet constraintSet = new ConstraintSet();
+    constraintSet.clone(participantsParent);
+
+    constraintSet.setMargin(R.id.call_screen_participants_pager, ConstraintSet.BOTTOM, ViewUtil.dpToPx(withControlsHeight(pagerBottomMarginDp)));
+    constraintSet.applyTo(participantsParent);
+  }
+
+  private void fadeControls(int visibility) {
+    controlsVisible = visibility == VISIBLE;
+
+    Transition transition = new AutoTransition().setOrdering(TransitionSet.ORDERING_TOGETHER)
+                                                .setDuration(TRANSITION_DURATION_MILLIS);
+
     TransitionManager.beginDelayedTransition(parent, transition);
 
     ConstraintSet constraintSet = new ConstraintSet();
@@ -412,6 +563,8 @@ public class WebRtcCallView extends FrameLayout {
     }
 
     constraintSet.applyTo(parent);
+
+    layoutParticipants();
   }
 
   private void fadeInNewUiState(@NonNull Set<View> previouslyVisibleViewSet, boolean useSmallMargins) {
@@ -458,40 +611,6 @@ public class WebRtcCallView extends FrameLayout {
     }
   }
 
-  private static void setRenderer(@NonNull ViewGroup container, @Nullable View renderer) {
-    if (renderer == null) {
-      container.removeAllViews();
-      return;
-    }
-
-    ViewParent parent = renderer.getParent();
-    if (parent != null && parent != container) {
-      ((ViewGroup) parent).removeAllViews();
-    }
-
-    if (parent == container) {
-      return;
-    }
-
-    container.addView(renderer);
-  }
-
-  private void setRecipientCallCard(@NonNull Recipient recipient) {
-    ContactPhoto         contactPhoto  = recipient.getContactPhoto();
-    FallbackContactPhoto fallbackPhoto = recipient.getFallbackContactPhoto(FALLBACK_PHOTO_PROVIDER);
-
-    GlideApp.with(this).load(contactPhoto)
-                       .fallback(fallbackPhoto.asCallCard(getContext()))
-                       .error(fallbackPhoto.asCallCard(getContext()))
-                       .diskCacheStrategy(DiskCacheStrategy.ALL)
-                       .into(this.avatarCard);
-
-    if (contactPhoto == null) this.avatarCard.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
-    else                      this.avatarCard.setScaleType(ImageView.ScaleType.CENTER_CROP);
-
-    this.avatarCard.setBackgroundColor(recipient.getColor().toActionBarColor(getContext()));
-  }
-
   private void updateButtonStateForLargeButtons() {
     cameraDirectionToggle.setImageResource(R.drawable.webrtc_call_screen_camera_toggle);
     hangup.setImageResource(R.drawable.webrtc_call_screen_hangup);
@@ -508,14 +627,14 @@ public class WebRtcCallView extends FrameLayout {
     audioToggle.setImageResource(R.drawable.webrtc_call_screen_speaker_toggle_small);
   }
 
-  private static final class FallbackPhotoProvider extends Recipient.FallbackPhotoProvider {
-    @Override
-    public @NonNull FallbackContactPhoto getPhotoForRecipientWithoutName() {
-      return new ResourceContactPhoto(R.drawable.ic_profile_outline_120);
-    }
+  private boolean showParticipantsList() {
+    controlsListener.onShowParticipantsList();
+    return true;
   }
 
   public interface ControlsListener {
+    void onStartCall(boolean isVideoCall);
+    void onCancelStartCall();
     void onControlsFadeOut();
     void onAudioOutputChanged(@NonNull WebRtcAudioOutput audioOutput);
     void onVideoChanged(boolean isVideoEnabled);
@@ -525,6 +644,7 @@ public class WebRtcCallView extends FrameLayout {
     void onDenyCallPressed();
     void onAcceptCallWithVoiceOnlyPressed();
     void onAcceptCallPressed();
-    void onDownCaretPressed();
+    void onShowParticipantsList();
+    void onPageChanged(@NonNull CallParticipantsState.SelectedPage page);
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallViewModel.java

@@ -10,60 +10,38 @@ import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.Transformations;
 import androidx.lifecycle.ViewModel;
 
+import org.thoughtcrime.securesms.events.CallParticipant;
 import org.thoughtcrime.securesms.events.WebRtcViewModel;
 import org.thoughtcrime.securesms.recipients.LiveRecipient;
 import org.thoughtcrime.securesms.recipients.Recipient;
-import org.thoughtcrime.securesms.ringrtc.CameraState;
 import org.thoughtcrime.securesms.util.SingleLiveEvent;
 import org.thoughtcrime.securesms.util.livedata.LiveDataUtil;
 
 public class WebRtcCallViewModel extends ViewModel {
 
-  private final MutableLiveData<Boolean>                remoteVideoEnabled   = new MutableLiveData<>(false);
-  private final MutableLiveData<Boolean>                microphoneEnabled    = new MutableLiveData<>(true);
-  private final MutableLiveData<WebRtcLocalRenderState> localRenderState     = new MutableLiveData<>(WebRtcLocalRenderState.GONE);
-  private final MutableLiveData<Boolean>                isInPipMode          = new MutableLiveData<>(false);
-  private final MutableLiveData<Boolean>                localVideoEnabled    = new MutableLiveData<>(false);
-  private final MutableLiveData<CameraState.Direction>  cameraDirection      = new MutableLiveData<>(CameraState.Direction.FRONT);
-  private final LiveData<Boolean>                       shouldDisplayLocal   = LiveDataUtil.combineLatest(isInPipMode, localVideoEnabled, (a, b) -> !a && b);
-  private final LiveData<WebRtcLocalRenderState>        realLocalRenderState = LiveDataUtil.combineLatest(shouldDisplayLocal, localRenderState, this::getRealLocalRenderState);
-  private final MutableLiveData<WebRtcControls>         webRtcControls       = new MutableLiveData<>(WebRtcControls.NONE);
-  private final LiveData<WebRtcControls>                realWebRtcControls   = LiveDataUtil.combineLatest(isInPipMode, webRtcControls, this::getRealWebRtcControls);
-  private final SingleLiveEvent<Event>                  events               = new SingleLiveEvent<Event>();
-  private final MutableLiveData<Long>                   ellapsed             = new MutableLiveData<>(-1L);
-  private final MutableLiveData<LiveRecipient>          liveRecipient        = new MutableLiveData<>(Recipient.UNKNOWN.live());
-
-  private boolean       canDisplayTooltipIfNeeded = true;
-  private boolean       hasEnabledLocalVideo      = false;
-  private boolean       showVideoForOutgoing      = false;
-  private long          callConnectedTime         = -1;
-  private Handler       ellapsedTimeHandler       = new Handler(Looper.getMainLooper());
-  private boolean       answerWithVideoAvailable  = false;
-  private Runnable      ellapsedTimeRunnable      = this::handleTick;
+  private final MutableLiveData<Boolean>               microphoneEnabled  = new MutableLiveData<>(true);
+  private final MutableLiveData<Boolean>               isInPipMode        = new MutableLiveData<>(false);
+  private final MutableLiveData<WebRtcControls>        webRtcControls     = new MutableLiveData<>(WebRtcControls.NONE);
+  private final LiveData<WebRtcControls>               realWebRtcControls = LiveDataUtil.combineLatest(isInPipMode, webRtcControls, this::getRealWebRtcControls);
+  private final SingleLiveEvent<Event>                 events             = new SingleLiveEvent<Event>();
+  private final MutableLiveData<Long>                  elapsed            = new MutableLiveData<>(-1L);
+  private final MutableLiveData<LiveRecipient>         liveRecipient      = new MutableLiveData<>(Recipient.UNKNOWN.live());
+  private final MutableLiveData<CallParticipantsState> participantsState  = new MutableLiveData<>(CallParticipantsState.STARTING_STATE);
 
+  private boolean  canDisplayTooltipIfNeeded = true;
+  private boolean  hasEnabledLocalVideo      = false;
+  private long     callConnectedTime         = -1;
+  private Handler  elapsedTimeHandler        = new Handler(Looper.getMainLooper());
+  private boolean  answerWithVideoAvailable  = false;
+  private Runnable elapsedTimeRunnable       = this::handleTick;
+  private boolean  canEnterPipMode           = false;
 
   private final WebRtcCallRepository repository = new WebRtcCallRepository();
 
-  public LiveData<Boolean> getRemoteVideoEnabled() {
-    return Transformations.distinctUntilChanged(remoteVideoEnabled);
-  }
-
   public LiveData<Boolean> getMicrophoneEnabled() {
     return Transformations.distinctUntilChanged(microphoneEnabled);
   }
 
-  public LiveData<CameraState.Direction> getCameraDirection() {
-    return Transformations.distinctUntilChanged(cameraDirection);
-  }
-
-  public LiveData<Boolean> displaySquareCallCard() {
-    return isInPipMode;
-  }
-
-  public LiveData<WebRtcLocalRenderState> getLocalRenderState() {
-    return realLocalRenderState;
-  }
-
   public LiveData<WebRtcControls> getWebRtcControls() {
     return realWebRtcControls;
   }
@@ -81,7 +59,15 @@ public class WebRtcCallViewModel extends ViewModel {
   }
 
   public LiveData<Long> getCallTime() {
-    return Transformations.map(ellapsed, timeInCall -> callConnectedTime == -1 ? -1 : timeInCall);
+    return Transformations.map(elapsed, timeInCall -> callConnectedTime == -1 ? -1 : timeInCall);
+  }
+
+  public LiveData<CallParticipantsState> getCallParticipantsState() {
+    return participantsState;
+  }
+
+  public boolean canEnterPipMode() {
+    return canEnterPipMode;
   }
 
   public boolean isAnswerWithVideoAvailable() {
@@ -91,6 +77,15 @@ public class WebRtcCallViewModel extends ViewModel {
   @MainThread
   public void setIsInPipMode(boolean isInPipMode) {
     this.isInPipMode.setValue(isInPipMode);
+
+    //noinspection ConstantConditions
+    participantsState.setValue(CallParticipantsState.update(participantsState.getValue(), isInPipMode));
+  }
+
+  @MainThread
+  public void setIsViewingFocusedParticipant(@NonNull CallParticipantsState.SelectedPage page) {
+    //noinspection ConstantConditions
+    participantsState.setValue(CallParticipantsState.update(participantsState.getValue(), page));
   }
 
   public void onDismissedVideoTooltip() {
@@ -99,27 +94,20 @@ public class WebRtcCallViewModel extends ViewModel {
 
   @MainThread
   public void updateFromWebRtcViewModel(@NonNull WebRtcViewModel webRtcViewModel, boolean enableVideo) {
-    remoteVideoEnabled.setValue(webRtcViewModel.isRemoteVideoEnabled());
-    microphoneEnabled.setValue(webRtcViewModel.isMicrophoneEnabled());
+    canEnterPipMode = webRtcViewModel.getState() != WebRtcViewModel.State.CALL_PRE_JOIN;
 
-    if (isValidCameraDirectionForUi(webRtcViewModel.getLocalCameraState().getActiveDirection())) {
-      cameraDirection.setValue(webRtcViewModel.getLocalCameraState().getActiveDirection());
-    }
+    CallParticipant localParticipant = webRtcViewModel.getLocalParticipant();
 
-    localVideoEnabled.setValue(webRtcViewModel.getLocalCameraState().isEnabled());
+    microphoneEnabled.setValue(localParticipant.isMicrophoneEnabled());
 
-    if (enableVideo) {
-      showVideoForOutgoing = webRtcViewModel.getState() == WebRtcViewModel.State.CALL_OUTGOING;
-    } else if (webRtcViewModel.getState() != WebRtcViewModel.State.CALL_OUTGOING) {
-      showVideoForOutgoing = false;
-    }
+    //noinspection ConstantConditions
+    participantsState.setValue(CallParticipantsState.update(participantsState.getValue(), webRtcViewModel, enableVideo));
 
-    updateLocalRenderState(webRtcViewModel.getState());
     updateWebRtcControls(webRtcViewModel.getState(),
-                         webRtcViewModel.getLocalCameraState().isEnabled(),
+                         localParticipant.getCameraState().isEnabled(),
                          webRtcViewModel.isRemoteVideoEnabled(),
                          webRtcViewModel.isRemoteVideoOffer(),
-                         webRtcViewModel.getLocalCameraState().getCameraCount() > 1,
+                         localParticipant.isMoreThanOneCameraAvailable(),
                          webRtcViewModel.isBluetoothAvailable(),
                          repository.getAudioOutput());
 
@@ -131,9 +119,9 @@ public class WebRtcCallViewModel extends ViewModel {
       callConnectedTime = -1;
     }
 
-    if (webRtcViewModel.getLocalCameraState().isEnabled()) {
+    if (localParticipant.getCameraState().isEnabled()) {
       canDisplayTooltipIfNeeded = false;
-      hasEnabledLocalVideo = true;
+      hasEnabledLocalVideo      = true;
       events.setValue(Event.DISMISS_VIDEO_TOOLTIP);
     }
 
@@ -144,34 +132,36 @@ public class WebRtcCallViewModel extends ViewModel {
     }
   }
 
-  private boolean isValidCameraDirectionForUi(CameraState.Direction direction) {
-    return direction == CameraState.Direction.FRONT || direction == CameraState.Direction.BACK;
-  }
-
-  private void updateLocalRenderState(WebRtcViewModel.State state) {
-    if (state == WebRtcViewModel.State.CALL_CONNECTED) {
-      localRenderState.setValue(WebRtcLocalRenderState.SMALL);
-    } else {
-      localRenderState.setValue(WebRtcLocalRenderState.LARGE);
-    }
-  }
-
-  private void updateWebRtcControls(WebRtcViewModel.State state,
+  private void updateWebRtcControls(@NonNull WebRtcViewModel.State state,
                                     boolean isLocalVideoEnabled,
                                     boolean isRemoteVideoEnabled,
                                     boolean isRemoteVideoOffer,
                                     boolean isMoreThanOneCameraAvailable,
                                     boolean isBluetoothAvailable,
-                                    WebRtcAudioOutput audioOutput)
+                                    @NonNull WebRtcAudioOutput audioOutput)
   {
-
     final WebRtcControls.CallState callState;
 
     switch (state) {
+      case CALL_PRE_JOIN:
+        callState = WebRtcControls.CallState.PRE_JOIN;
+        break;
       case CALL_INCOMING:
         callState = WebRtcControls.CallState.INCOMING;
         answerWithVideoAvailable = isRemoteVideoOffer;
         break;
+      case CALL_OUTGOING:
+      case CALL_RINGING:
+        callState = WebRtcControls.CallState.OUTGOING;
+        break;
+      case CALL_ACCEPTED_ELSEWHERE:
+      case CALL_DECLINED_ELSEWHERE:
+      case CALL_ONGOING_ELSEWHERE:
+      case CALL_NEEDS_PERMISSION:
+      case CALL_BUSY:
+      case CALL_DISCONNECTED:
+        callState = WebRtcControls.CallState.ENDING;
+        break;
       default:
         callState = WebRtcControls.CallState.ONGOING;
     }
@@ -180,25 +170,19 @@ public class WebRtcCallViewModel extends ViewModel {
                                                isRemoteVideoEnabled || isRemoteVideoOffer,
                                                isMoreThanOneCameraAvailable,
                                                isBluetoothAvailable,
-                                               isInPipMode.getValue() == Boolean.TRUE,
+                                               Boolean.TRUE.equals(isInPipMode.getValue()),
                                                callState,
                                                audioOutput));
   }
 
-  private @NonNull WebRtcLocalRenderState getRealLocalRenderState(boolean shouldDisplayLocalVideo, @NonNull WebRtcLocalRenderState state) {
-    if (shouldDisplayLocalVideo || showVideoForOutgoing) return state;
-    else                                                 return WebRtcLocalRenderState.GONE;
-  }
-
   private @NonNull WebRtcControls getRealWebRtcControls(boolean isInPipMode, @NonNull WebRtcControls controls) {
-    if (isInPipMode) return WebRtcControls.PIP;
-    else             return controls;
+    return isInPipMode ? WebRtcControls.PIP : controls;
   }
 
   private void startTimer() {
     cancelTimer();
 
-    ellapsedTimeHandler.post(ellapsedTimeRunnable);
+    elapsedTimeHandler.post(elapsedTimeRunnable);
   }
 
   private void handleTick() {
@@ -208,13 +192,13 @@ public class WebRtcCallViewModel extends ViewModel {
 
     long newValue = (System.currentTimeMillis() - callConnectedTime) / 1000;
 
-    ellapsed.postValue(newValue);
+    elapsed.postValue(newValue);
 
-    ellapsedTimeHandler.postDelayed(ellapsedTimeRunnable, 1000);
+    elapsedTimeHandler.postDelayed(elapsedTimeRunnable, 1000);
   }
 
   private void cancelTimer() {
-    ellapsedTimeHandler.removeCallbacks(ellapsedTimeRunnable);
+    elapsedTimeHandler.removeCallbacks(elapsedTimeRunnable);
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcControls.java

@@ -36,24 +36,32 @@ public final class WebRtcControls {
     this.audioOutput                  = audioOutput;
   }
 
+  boolean displayStartCallControls() {
+    return isPreJoin();
+  }
+
   boolean displayEndCall() {
-    return isOngoing();
+    return isAtLeastOutgoing();
   }
 
   boolean displayMuteAudio() {
-    return isOngoing();
+    return isPreJoin() || isAtLeastOutgoing();
   }
 
   boolean displayVideoToggle() {
-    return isOngoing();
+    return isPreJoin() || isAtLeastOutgoing();
   }
 
   boolean displayAudioToggle() {
-    return isOngoing() && (!isLocalVideoEnabled || isBluetoothAvailable);
+    return (isPreJoin() || isAtLeastOutgoing()) && (!isLocalVideoEnabled || isBluetoothAvailable);
   }
 
   boolean displayCameraToggle() {
-    return isOngoing() && isLocalVideoEnabled && isMoreThanOneCameraAvailable;
+    return (isPreJoin() || isAtLeastOutgoing()) && isLocalVideoEnabled && isMoreThanOneCameraAvailable;
+  }
+
+  boolean displayRemoteVideoRecycler() {
+    return isOngoing();
   }
 
   boolean displayAnswerWithAudio() {
@@ -73,25 +81,29 @@ public final class WebRtcControls {
   }
 
   boolean isFadeOutEnabled() {
-    return isOngoing() && isRemoteVideoEnabled;
+    return isAtLeastOutgoing() && isRemoteVideoEnabled;
   }
 
   boolean displaySmallOngoingCallButtons() {
-    return isOngoing() && displayAudioToggle() && displayCameraToggle();
+    return isAtLeastOutgoing() && displayAudioToggle() && displayCameraToggle();
   }
 
   boolean displayLargeOngoingCallButtons() {
-    return isOngoing() && !(displayAudioToggle() && displayCameraToggle());
+    return isAtLeastOutgoing() && !(displayAudioToggle() && displayCameraToggle());
   }
 
   boolean displayTopViews() {
     return !isInPipMode;
   }
 
-  WebRtcAudioOutput getAudioOutput() {
+  @NonNull WebRtcAudioOutput getAudioOutput() {
     return audioOutput;
   }
 
+  private boolean isPreJoin() {
+    return callState == CallState.PRE_JOIN;
+  }
+
   private boolean isOngoing() {
     return callState == CallState.ONGOING;
   }
@@ -100,9 +112,20 @@ public final class WebRtcControls {
     return callState == CallState.INCOMING;
   }
 
+  private boolean isAtLeastOutgoing() {
+    return callState.isAtLeast(CallState.OUTGOING);
+  }
+
   public enum CallState {
     NONE,
+    PRE_JOIN,
     INCOMING,
-    ONGOING
+    OUTGOING,
+    ONGOING,
+    ENDING;
+
+    boolean isAtLeast(@NonNull CallState other) {
+      return compareTo(other) >= 0;
+    }
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcLocalRenderState.java

@@ -2,6 +2,8 @@ package org.thoughtcrime.securesms.components.webrtc;
 
 public enum WebRtcLocalRenderState {
   GONE,
-  SMALL,
-  LARGE
+  SMALL_RECTANGLE,
+  SMALL_SQUARE,
+  LARGE,
+  LARGE_NO_VIDEO
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantViewHolder.java

@@ -0,0 +1,18 @@
+package org.thoughtcrime.securesms.components.webrtc.participantslist;
+
+import android.view.View;
+
+import androidx.annotation.NonNull;
+
+import org.thoughtcrime.securesms.util.viewholders.RecipientViewHolder;
+
+public class CallParticipantViewHolder extends RecipientViewHolder<CallParticipantViewState> {
+  public CallParticipantViewHolder(@NonNull View itemView) {
+    super(itemView, null);
+  }
+
+  @Override
+  public void bind(@NonNull CallParticipantViewState model) {
+    super.bind(model);
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantViewState.java

@@ -0,0 +1,21 @@
+package org.thoughtcrime.securesms.components.webrtc.participantslist;
+
+import androidx.annotation.NonNull;
+
+import org.thoughtcrime.securesms.events.CallParticipant;
+import org.thoughtcrime.securesms.recipients.Recipient;
+import org.thoughtcrime.securesms.util.viewholders.RecipientMappingModel;
+
+public final class CallParticipantViewState extends RecipientMappingModel<CallParticipantViewState> {
+
+  private final CallParticipant callParticipant;
+
+  CallParticipantViewState(@NonNull CallParticipant callParticipant) {
+    this.callParticipant = callParticipant;
+  }
+
+  @Override
+  public @NonNull Recipient getRecipient() {
+    return callParticipant.getRecipient();
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantsListAdapter.java

@@ -0,0 +1,13 @@
+package org.thoughtcrime.securesms.components.webrtc.participantslist;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.util.MappingAdapter;
+
+public class CallParticipantsListAdapter extends MappingAdapter {
+
+  CallParticipantsListAdapter() {
+    registerFactory(CallParticipantsListHeader.class, new LayoutFactory<>(CallParticipantsListHeaderViewHolder::new, R.layout.call_participants_list_header));
+    registerFactory(CallParticipantViewState.class, new LayoutFactory<>(CallParticipantViewHolder::new, R.layout.call_participants_list_item));
+  }
+
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantsListDialog.java

@@ -0,0 +1,92 @@
+package org.thoughtcrime.securesms.components.webrtc.participantslist;
+
+import android.os.Bundle;
+import android.view.ContextThemeWrapper;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.lifecycle.ViewModelProviders;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.components.webrtc.CallParticipantsState;
+import org.thoughtcrime.securesms.components.webrtc.WebRtcCallViewModel;
+import org.thoughtcrime.securesms.events.CallParticipant;
+import org.thoughtcrime.securesms.util.BottomSheetUtil;
+import org.thoughtcrime.securesms.util.MappingModel;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class CallParticipantsListDialog extends BottomSheetDialogFragment {
+
+  private RecyclerView                participantList;
+  private CallParticipantsListAdapter adapter;
+
+  public static void show(@NonNull FragmentManager manager) {
+    CallParticipantsListDialog fragment = new CallParticipantsListDialog();
+
+    fragment.show(manager, BottomSheetUtil.STANDARD_BOTTOM_SHEET_FRAGMENT_TAG);
+  }
+
+  @Override
+  public void show(@NonNull FragmentManager manager, @Nullable String tag) {
+    BottomSheetUtil.show(manager, tag, this);
+  }
+
+  @Override
+  public void onCreate(@Nullable Bundle savedInstanceState) {
+    setStyle(DialogFragment.STYLE_NORMAL, R.style.Theme_Signal_RoundedBottomSheet);
+    super.onCreate(savedInstanceState);
+  }
+
+  @Override
+  public @NonNull View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+    ContextThemeWrapper contextThemeWrapper = new ContextThemeWrapper(inflater.getContext(), R.style.TextSecure_DarkTheme);
+    LayoutInflater      themedInflater      = LayoutInflater.from(contextThemeWrapper);
+
+    participantList = (RecyclerView) themedInflater.inflate(R.layout.call_participants_list_dialog, container, false);
+
+    return participantList;
+  }
+
+  @Override
+  public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+    super.onActivityCreated(savedInstanceState);
+
+    final WebRtcCallViewModel viewModel = ViewModelProviders.of(requireActivity()).get(WebRtcCallViewModel.class);
+
+    initializeList();
+
+    viewModel.getCallParticipantsState().observe(getViewLifecycleOwner(), this::updateList);
+  }
+
+  private void initializeList() {
+    adapter = new CallParticipantsListAdapter();
+
+    participantList.setLayoutManager(new LinearLayoutManager(requireContext()));
+    participantList.setAdapter(adapter);
+  }
+
+  private void updateList(@NonNull CallParticipantsState callParticipantsState) {
+    List<MappingModel<?>> items = new ArrayList<>();
+
+    items.add(new CallParticipantsListHeader(callParticipantsState.getAllRemoteParticipants().size() + 1));
+
+    items.add(new CallParticipantViewState(callParticipantsState.getLocalParticipant()));
+    for (CallParticipant callParticipant : callParticipantsState.getAllRemoteParticipants()) {
+      items.add(new CallParticipantViewState(callParticipant));
+    }
+
+    adapter.submitList(items);
+  }
+
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantsListHeader.java

@@ -0,0 +1,31 @@
+package org.thoughtcrime.securesms.components.webrtc.participantslist;
+
+import android.content.Context;
+
+import androidx.annotation.NonNull;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.util.MappingModel;
+
+public class CallParticipantsListHeader implements MappingModel<CallParticipantsListHeader> {
+
+  private int participantCount;
+
+  public CallParticipantsListHeader(int participantCount) {
+    this.participantCount = participantCount;
+  }
+
+  @NonNull String getHeader(@NonNull Context context) {
+    return context.getResources().getQuantityString(R.plurals.CallParticipantsListDialog_in_this_call_d_people, participantCount, participantCount);
+  }
+
+  @Override
+  public boolean areItemsTheSame(@NonNull CallParticipantsListHeader newItem) {
+    return true;
+  }
+
+  @Override
+  public boolean areContentsTheSame(@NonNull CallParticipantsListHeader newItem) {
+    return participantCount == newItem.participantCount;
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantsListHeaderViewHolder.java

@@ -0,0 +1,24 @@
+package org.thoughtcrime.securesms.components.webrtc.participantslist;
+
+import android.view.View;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.util.MappingViewHolder;
+
+public class CallParticipantsListHeaderViewHolder extends MappingViewHolder<CallParticipantsListHeader> {
+
+  private final TextView headerText;
+
+  public CallParticipantsListHeaderViewHolder(@NonNull View itemView) {
+    super(itemView);
+    headerText = findViewById(R.id.call_participants_list_header);
+  }
+
+  @Override
+  public void bind(@NonNull CallParticipantsListHeader model) {
+    headerText.setText(model.getHeader(getContext()));
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/contacts/avatars/ResourceContactPhoto.java

@@ -8,6 +8,8 @@ import android.graphics.drawable.LayerDrawable;
 import android.widget.ImageView;
 
 import androidx.annotation.DrawableRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.appcompat.content.res.AppCompatResources;
 
 import com.amulyakhare.textdrawable.TextDrawable;
@@ -22,6 +24,8 @@ public class ResourceContactPhoto implements FallbackContactPhoto {
   private final int smallResourceId;
   private final int callCardResourceId;
 
+  private ImageView.ScaleType scaleType = ImageView.ScaleType.CENTER;
+
   public ResourceContactPhoto(@DrawableRes int resourceId) {
     this(resourceId, resourceId, resourceId);
   }
@@ -36,26 +40,31 @@ public class ResourceContactPhoto implements FallbackContactPhoto {
     this.smallResourceId    = smallResourceId;
   }
 
+  public void setScaleType(@NonNull ImageView.ScaleType scaleType) {
+    this.scaleType = scaleType;
+  }
+
   @Override
-  public Drawable asDrawable(Context context, int color) {
+  public @NonNull Drawable asDrawable(@NonNull Context context, int color) {
     return asDrawable(context, color, false);
   }
 
   @Override
-  public Drawable asDrawable(Context context, int color, boolean inverted) {
+  public @NonNull Drawable asDrawable(@NonNull Context context, int color, boolean inverted) {
     return buildDrawable(context, resourceId, color, inverted);
   }
 
   @Override
-  public Drawable asSmallDrawable(Context context, int color, boolean inverted) {
+  public @NonNull Drawable asSmallDrawable(@NonNull Context context, int color, boolean inverted) {
     return buildDrawable(context, smallResourceId, color, inverted);
   }
 
-  private Drawable buildDrawable(Context context, int resourceId, int color, boolean inverted) {
+  private @NonNull Drawable buildDrawable(@NonNull Context context, int resourceId, int color, boolean inverted) {
     Drawable        background = TextDrawable.builder().buildRound(" ", inverted ? Color.WHITE : color);
     RoundedDrawable foreground = (RoundedDrawable) RoundedDrawable.fromDrawable(AppCompatResources.getDrawable(context, resourceId));
 
-    foreground.setScaleType(ImageView.ScaleType.CENTER);
+    //noinspection ConstantConditions
+    foreground.setScaleType(scaleType);
 
     if (inverted) {
       foreground.setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
@@ -68,12 +77,12 @@ public class ResourceContactPhoto implements FallbackContactPhoto {
   }
 
   @Override
-  public Drawable asCallCard(Context context) {
+  public @Nullable Drawable asCallCard(@NonNull Context context) {
     return AppCompatResources.getDrawable(context, callCardResourceId);
   }
 
   private static class ExpandingLayerDrawable extends LayerDrawable {
-    public ExpandingLayerDrawable(Drawable[] layers) {
+    public ExpandingLayerDrawable(@NonNull Drawable[] layers) {
       super(layers);
     }
 

app/src/main/java/org/thoughtcrime/securesms/contacts/sync/ContactDiscoveryV1.java

@@ -1,58 +0,0 @@
-package org.thoughtcrime.securesms.contacts.sync;
-
-import androidx.annotation.NonNull;
-
-import com.annimon.stream.Collectors;
-import com.annimon.stream.Stream;
-
-import org.thoughtcrime.securesms.contacts.sync.DirectoryHelper.DirectoryResult;
-import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
-import org.thoughtcrime.securesms.util.SetUtil;
-import org.whispersystems.libsignal.util.guava.Optional;
-import org.whispersystems.signalservice.api.SignalServiceAccountManager;
-import org.whispersystems.signalservice.api.push.ContactTokenDetails;
-
-import java.io.IOException;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Set;
-import java.util.UUID;
-
-class ContactDiscoveryV1 {
-
-  private static final String TAG = ContactDiscoveryV1.class.getSimpleName();
-
-  static @NonNull DirectoryResult getDirectoryResult(@NonNull Set<String> databaseNumbers,
-                                                     @NonNull Set<String> systemNumbers)
-      throws IOException
-  {
-    Set<String>                         allNumbers    = SetUtil.union(databaseNumbers, systemNumbers);
-    FuzzyPhoneNumberHelper.InputResult  inputResult   = FuzzyPhoneNumberHelper.generateInput(allNumbers, databaseNumbers);
-    List<ContactTokenDetails>           activeTokens  = getTokens(inputResult.getNumbers());
-    Set<String>                         activeNumbers = Stream.of(activeTokens).map(ContactTokenDetails::getNumber).collect(Collectors.toSet());
-    FuzzyPhoneNumberHelper.OutputResult outputResult  = FuzzyPhoneNumberHelper.generateOutput(activeNumbers, inputResult);
-    HashMap<String, UUID>               uuids         = new HashMap<>();
-
-    for (String number : outputResult.getNumbers()) {
-      uuids.put(number, null);
-    }
-
-    return new DirectoryResult(uuids, outputResult.getRewrites());
-  }
-
-  static @NonNull DirectoryResult getDirectoryResult(@NonNull String number) throws  IOException {
-    return getDirectoryResult(Collections.singleton(number), Collections.singleton(number));
-  }
-
-  private static @NonNull List<ContactTokenDetails> getTokens(@NonNull Set<String> numbers) throws IOException {
-    SignalServiceAccountManager accountManager = ApplicationDependencies.getSignalServiceAccountManager();
-
-    if (numbers.size() == 1) {
-      Optional<ContactTokenDetails> details = accountManager.getContact(numbers.iterator().next());
-      return details.isPresent() ? Collections.singletonList(details.get()) : Collections.emptyList();
-    } else {
-      return accountManager.getContacts(numbers);
-    }
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/contacts/sync/ContactDiscoveryV2.java

@@ -31,6 +31,9 @@ import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
 
+/**
+ * Uses CDS to map E164's to UUIDs.
+ */
 class ContactDiscoveryV2 {
 
   private static final String TAG = Log.tag(ContactDiscoveryV2.class);

app/src/main/java/org/thoughtcrime/securesms/contacts/sync/DirectoryHelper.java

@@ -25,20 +25,21 @@ import org.thoughtcrime.securesms.contacts.ContactAccessor;
 import org.thoughtcrime.securesms.contacts.ContactsDatabase;
 import org.thoughtcrime.securesms.crypto.SessionUtil;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
-import org.thoughtcrime.securesms.database.MessageDatabase;
 import org.thoughtcrime.securesms.database.MessageDatabase.InsertResult;
 import org.thoughtcrime.securesms.database.RecipientDatabase;
 import org.thoughtcrime.securesms.database.RecipientDatabase.BulkOperationsHandle;
 import org.thoughtcrime.securesms.database.RecipientDatabase.RegisteredState;
+import org.thoughtcrime.securesms.database.SessionDatabase;
+import org.thoughtcrime.securesms.database.ThreadDatabase;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.jobs.MultiDeviceContactUpdateJob;
+import org.thoughtcrime.securesms.jobs.RetrieveProfileJob;
 import org.thoughtcrime.securesms.jobs.StorageSyncJob;
 import org.thoughtcrime.securesms.keyvalue.SignalStore;
 import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.notifications.NotificationChannels;
 import org.thoughtcrime.securesms.permissions.Permissions;
 import org.thoughtcrime.securesms.phonenumbers.PhoneNumberFormatter;
-import org.thoughtcrime.securesms.recipients.RecipientDetails;
 import org.thoughtcrime.securesms.registration.RegistrationUtil;
 import org.thoughtcrime.securesms.storage.StorageSyncHelper;
 import org.thoughtcrime.securesms.recipients.Recipient;
@@ -50,10 +51,13 @@ import org.thoughtcrime.securesms.util.SetUtil;
 import org.thoughtcrime.securesms.util.Stopwatch;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.thoughtcrime.securesms.util.Util;
+import org.whispersystems.libsignal.util.Pair;
 import org.whispersystems.libsignal.util.guava.Optional;
+import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 import org.whispersystems.signalservice.api.push.exceptions.NotFoundException;
 import org.whispersystems.signalservice.api.util.UuidUtil;
+import org.whispersystems.signalservice.internal.util.concurrent.ListenableFuture;
 
 import java.io.IOException;
 import java.util.Calendar;
@@ -154,13 +158,7 @@ public class DirectoryHelper {
       return RegisteredState.NOT_REGISTERED;
     }
 
-    DirectoryResult result;
-
-    if (FeatureFlags.cds()) {
-      result = ContactDiscoveryV2.getDirectoryResult(context, recipient.getE164().get());
-    } else {
-      result = ContactDiscoveryV1.getDirectoryResult(recipient.getE164().get());
-    }
+    DirectoryResult result = ContactDiscoveryV2.getDirectoryResult(context, recipient.getE164().get());
 
     stopwatch.split("e164-network");
 
@@ -179,6 +177,13 @@ public class DirectoryHelper {
       } else {
         recipientDatabase.markRegistered(recipient.getId());
       }
+    } else if (recipient.hasUuid() && recipient.isRegistered() && hasCommunicatedWith(context, recipient)) {
+      if (isUuidRegistered(context, recipient)) {
+        recipientDatabase.markRegistered(recipient.getId(), recipient.requireUuid());
+      } else {
+        recipientDatabase.markUnregistered(recipient.getId());
+      }
+      stopwatch.split("e164-unlisted-network");
     } else {
       recipientDatabase.markUnregistered(recipient.getId());
     }
@@ -218,13 +223,7 @@ public class DirectoryHelper {
 
     Stopwatch stopwatch = new Stopwatch("refresh");
 
-    DirectoryResult result;
-
-    if (FeatureFlags.cds()) {
-      result = ContactDiscoveryV2.getDirectoryResult(context, databaseNumbers, systemNumbers);
-    } else {
-      result = ContactDiscoveryV1.getDirectoryResult(databaseNumbers, systemNumbers);
-    }
+    DirectoryResult result = ContactDiscoveryV2.getDirectoryResult(context, databaseNumbers, systemNumbers);
 
     stopwatch.split("network");
 
@@ -244,6 +243,17 @@ public class DirectoryHelper {
 
     stopwatch.split("process-cds");
 
+    UnlistedResult unlistedResult = filterForUnlistedUsers(context, inactiveIds);
+
+    inactiveIds.removeAll(unlistedResult.getPossiblyActive());
+
+    if (unlistedResult.getRetries().size() > 0) {
+      Log.i(TAG, "Some profile fetches failed to resolve. Assuming not-inactive for now and scheduling a retry.");
+      RetrieveProfileJob.enqueue(unlistedResult.getRetries());
+    }
+
+    stopwatch.split("handle-unlisted");
+
     recipientDatabase.bulkUpdatedRegisteredStatus(uuidMap, inactiveIds);
 
     stopwatch.split("update-registered");
@@ -275,16 +285,10 @@ public class DirectoryHelper {
 
   private static boolean isUuidRegistered(@NonNull Context context, @NonNull Recipient recipient) throws IOException {
     try {
-      ProfileUtil.retrieveProfile(context, recipient, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS);
+      ProfileUtil.retrieveProfileSync(context, recipient, SignalServiceProfile.RequestType.PROFILE);
       return true;
-    } catch (ExecutionException e) {
-      if (e.getCause() instanceof NotFoundException) {
-        return false;
-      } else {
-        throw new IOException(e);
-      }
-    } catch (InterruptedException | TimeoutException e) {
-      throw new IOException(e);
+    } catch (NotFoundException e) {
+      return false;
     }
   }
 
@@ -420,6 +424,50 @@ public class DirectoryHelper {
     }).collect(Collectors.toSet());
   }
 
+  /**
+   * Users can mark themselves as 'unlisted' in CDS, meaning that even if CDS says they're
+   * unregistered, they might actually be registered. We need to double-check users who we already
+   * have UUIDs for. Also, we only want to bother doing this for users we have conversations for,
+   * so we will also only check for users that have a thread.
+   */
+  private static UnlistedResult filterForUnlistedUsers(@NonNull Context context, @NonNull Set<RecipientId> inactiveIds) {
+    List<Recipient> possiblyUnlisted = Stream.of(inactiveIds)
+                                             .map(Recipient::resolved)
+                                             .filter(Recipient::isRegistered)
+                                             .filter(Recipient::hasUuid)
+                                             .filter(r -> hasCommunicatedWith(context, r))
+                                             .toList();
+
+    List<Pair<Recipient, ListenableFuture<ProfileAndCredential>>> futures = Stream.of(possiblyUnlisted)
+                                                                                  .map(r -> new Pair<>(r, ProfileUtil.retrieveProfile(context, r, SignalServiceProfile.RequestType.PROFILE)))
+                                                                                  .toList();
+    Set<RecipientId> potentiallyActiveIds = new HashSet<>();
+    Set<RecipientId> retries              = new HashSet<>();
+
+    Stream.of(futures)
+          .forEach(pair -> {
+            try {
+              pair.second().get(5, TimeUnit.SECONDS);
+              potentiallyActiveIds.add(pair.first().getId());
+            } catch (InterruptedException | TimeoutException e) {
+              retries.add(pair.first().getId());
+              potentiallyActiveIds.add(pair.first().getId());
+            } catch (ExecutionException e) {
+              if (!(e.getCause() instanceof NotFoundException)) {
+                retries.add(pair.first().getId());
+                potentiallyActiveIds.add(pair.first().getId());
+              }
+            }
+          });
+
+    return new UnlistedResult(potentiallyActiveIds, retries);
+  }
+
+  private static boolean hasCommunicatedWith(@NonNull Context context, @NonNull Recipient recipient) {
+    return DatabaseFactory.getThreadDatabase(context).hasThread(recipient.getId()) ||
+           DatabaseFactory.getSessionDatabase(context).hasSessionFor(recipient.getId());
+  }
+
   static class DirectoryResult {
     private final Map<String, UUID>   registeredNumbers;
     private final Map<String, String> numberRewrites;
@@ -441,6 +489,24 @@ public class DirectoryHelper {
     }
   }
 
+  private static class UnlistedResult {
+    private final Set<RecipientId> possiblyActive;
+    private final Set<RecipientId> retries;
+
+    private UnlistedResult(@NonNull Set<RecipientId> possiblyActive, @NonNull Set<RecipientId> retries) {
+      this.possiblyActive = possiblyActive;
+      this.retries        = retries;
+    }
+
+    @NonNull Set<RecipientId> getPossiblyActive() {
+      return possiblyActive;
+    }
+
+    @NonNull Set<RecipientId> getRetries() {
+      return retries;
+    }
+  }
+
   private static class AccountHolder {
     private final boolean fresh;
     private final Account account;

app/src/main/java/org/thoughtcrime/securesms/contactshare/Contact.java

@@ -14,7 +14,6 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import org.thoughtcrime.securesms.attachments.Attachment;
 import org.thoughtcrime.securesms.attachments.AttachmentId;
 import org.thoughtcrime.securesms.attachments.UriAttachment;
-import org.thoughtcrime.securesms.blurhash.BlurHash;
 import org.thoughtcrime.securesms.database.AttachmentDatabase;
 import org.thoughtcrime.securesms.util.JsonUtils;
 import org.thoughtcrime.securesms.util.MediaUtil;
@@ -648,7 +647,7 @@ public class Contact implements Parcelable {
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
-      dest.writeParcelable(attachment != null ? attachment.getDataUri() : null, flags);
+      dest.writeParcelable(attachment != null ? attachment.getUri() : null, flags);
       dest.writeByte((byte) (isProfile ? 1 : 0));
     }
 

app/src/main/java/org/thoughtcrime/securesms/contactshare/ContactFieldAdapter.java

@@ -215,7 +215,7 @@ class ContactFieldAdapter extends RecyclerView.Adapter<ContactFieldAdapter.Conta
     Field(@NonNull Avatar avatar) {
       this.value      = "";
       this.iconResId  = R.drawable.baseline_account_circle_white_24;
-      this.iconUri    = avatar.getAttachment() != null ? avatar.getAttachment().getDataUri() : null;
+      this.iconUri    = avatar.getAttachment() != null ? avatar.getAttachment().getUri() : null;
       this.maxLines   = 1;
       this.selectable = avatar;
       this.label      = "";

app/src/main/java/org/thoughtcrime/securesms/contactshare/ContactUtil.java

@@ -186,11 +186,11 @@ public final class ContactUtil {
       intent.putExtra(ContactsContract.Intents.Insert.POSTAL_TYPE, getSystemType(contact.getPostalAddresses().get(0).getType()));
     }
 
-    if (contact.getAvatarAttachment() != null && contact.getAvatarAttachment().getDataUri() != null) {
+    if (contact.getAvatarAttachment() != null && contact.getAvatarAttachment().getUri() != null) {
       try {
         ContentValues values = new ContentValues();
         values.put(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE);
-        values.put(ContactsContract.CommonDataKinds.Photo.PHOTO, Util.readFully(PartAuthority.getAttachmentStream(context, contact.getAvatarAttachment().getDataUri())));
+        values.put(ContactsContract.CommonDataKinds.Photo.PHOTO, Util.readFully(PartAuthority.getAttachmentStream(context, contact.getAvatarAttachment().getUri())));
 
         ArrayList<ContentValues> valuesArray = new ArrayList<>(1);
         valuesArray.add(values);

app/src/main/java/org/thoughtcrime/securesms/contactshare/SharedContactDetailsActivity.java

@@ -96,7 +96,7 @@ public class SharedContactDetailsActivity extends PassphraseRequiredActivity {
 
     presentContact(contact);
     presentActionButtons(ContactUtil.getRecipients(this, contact));
-    presentAvatar(contact.getAvatarAttachment() != null ? contact.getAvatarAttachment().getDataUri() : null);
+    presentAvatar(contact.getAvatarAttachment() != null ? contact.getAvatarAttachment().getUri() : null);
 
     for (LiveRecipient recipient : activeRecipients.values()) {
       recipient.observe(this, r -> presentActionButtons(Collections.singletonList(r.getId())));

app/src/main/java/org/thoughtcrime/securesms/contactshare/SharedContactRepository.java

@@ -93,66 +93,7 @@ public class SharedContactRepository {
 
     try (InputStream stream = PartAuthority.getAttachmentStream(context, uri)) {
       VCard vcard = Ezvcard.parse(stream).first();
-
-      ezvcard.property.StructuredName  vName            = vcard.getStructuredName();
-      List<ezvcard.property.Telephone> vPhones          = vcard.getTelephoneNumbers();
-      List<ezvcard.property.Email>     vEmails          = vcard.getEmails();
-      List<ezvcard.property.Address>   vPostalAddresses = vcard.getAddresses();
-
-      String organization = vcard.getOrganization() != null && !vcard.getOrganization().getValues().isEmpty() ? vcard.getOrganization().getValues().get(0) : null;
-      String displayName  = vcard.getFormattedName() != null ? vcard.getFormattedName().getValue() : null;
-
-      if (displayName == null && vName != null) {
-        displayName = vName.getGiven();
-      }
-
-      if (displayName == null && vcard.getOrganization() != null) {
-        displayName = organization;
-      }
-
-      if (displayName == null) {
-        throw new IOException("No valid name.");
-      }
-
-      Name name = new Name(displayName,
-                           vName != null ? vName.getGiven() : null,
-                           vName != null ? vName.getFamily() : null,
-                           vName != null && !vName.getPrefixes().isEmpty() ? vName.getPrefixes().get(0) : null,
-                           vName != null && !vName.getSuffixes().isEmpty() ? vName.getSuffixes().get(0) : null,
-                           null);
-
-
-      List<Phone> phoneNumbers = new ArrayList<>(vPhones.size());
-      for (ezvcard.property.Telephone vEmail : vPhones) {
-        String label = !vEmail.getTypes().isEmpty() ? getCleanedVcardType(vEmail.getTypes().get(0).getValue()) : null;
-
-        // Phone number is stored in the uri field in v4.0 only. In other versions, it is in the text field.
-        String phoneNumberFromText  = vEmail.getText();
-        String extractedPhoneNumber = phoneNumberFromText == null ? vEmail.getUri().getNumber() : phoneNumberFromText;
-        phoneNumbers.add(new Phone(extractedPhoneNumber, phoneTypeFromVcardType(label), label));
-      }
-
-      List<Email> emails = new ArrayList<>(vEmails.size());
-      for (ezvcard.property.Email vEmail : vEmails) {
-        String label = !vEmail.getTypes().isEmpty() ? getCleanedVcardType(vEmail.getTypes().get(0).getValue()) : null;
-        emails.add(new Email(vEmail.getValue(), emailTypeFromVcardType(label), label));
-      }
-
-      List<PostalAddress> postalAddresses = new ArrayList<>(vPostalAddresses.size());
-      for (ezvcard.property.Address vPostalAddress : vPostalAddresses) {
-        String label = !vPostalAddress.getTypes().isEmpty() ? getCleanedVcardType(vPostalAddress.getTypes().get(0).getValue()) : null;
-        postalAddresses.add(new PostalAddress(postalAddressTypeFromVcardType(label),
-                                              label,
-                                              vPostalAddress.getStreetAddress(),
-                                              vPostalAddress.getPoBox(),
-                                              null,
-                                              vPostalAddress.getLocality(),
-                                              vPostalAddress.getRegion(),
-                                              vPostalAddress.getPostalCode(),
-                                              vPostalAddress.getCountry()));
-      }
-
-      contact = new Contact(name, organization, phoneNumbers, emails, postalAddresses, null);
+      contact = VCardUtil.getContactFromVcard(vcard);
     } catch (IOException e) {
       Log.w(TAG, "Failed to parse the vcard.", e);
     }
@@ -201,7 +142,7 @@ public class SharedContactRepository {
 
         String number    = ContactUtil.getNormalizedPhoneNumber(context, cursorNumber);
         Phone  existing  = numberMap.get(number);
-        Phone  candidate = new Phone(number, phoneTypeFromContactType(cursorType), cursorLabel);
+        Phone  candidate = new Phone(number, VCardUtil.phoneTypeFromContactType(cursorType), cursorLabel);
 
         if (existing == null || (existing.getType() == Phone.Type.CUSTOM && existing.getLabel() == null)) {
           numberMap.put(number, candidate);
@@ -224,7 +165,7 @@ public class SharedContactRepository {
         int    cursorType  = cursor.getInt(cursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Email.TYPE));
         String cursorLabel = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Email.LABEL));
 
-        emails.add(new Email(cursorEmail, emailTypeFromContactType(cursorType), cursorLabel));
+        emails.add(new Email(cursorEmail, VCardUtil.emailTypeFromContactType(cursorType), cursorLabel));
       }
     }
 
@@ -247,7 +188,7 @@ public class SharedContactRepository {
         String cursorPostal       = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.StructuredPostal.POSTCODE));
         String cursorCountry      = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.StructuredPostal.COUNTRY));
 
-        postalAddresses.add(new PostalAddress(postalAddressTypeFromContactType(cursorType),
+        postalAddresses.add(new PostalAddress(VCardUtil.postalAddressTypeFromContactType(cursorType),
                                               cursorLabel,
                                               cursorStreet,
                                               cursorPoBox,
@@ -304,70 +245,6 @@ public class SharedContactRepository {
     return null;
   }
 
-  private Phone.Type phoneTypeFromContactType(int type) {
-    switch (type) {
-      case ContactsContract.CommonDataKinds.Phone.TYPE_HOME:
-        return Phone.Type.HOME;
-      case ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE:
-        return Phone.Type.MOBILE;
-      case ContactsContract.CommonDataKinds.Phone.TYPE_WORK:
-        return Phone.Type.WORK;
-    }
-    return Phone.Type.CUSTOM;
-  }
-
-  private Phone.Type phoneTypeFromVcardType(@Nullable String type) {
-    if      ("home".equalsIgnoreCase(type)) return Phone.Type.HOME;
-    else if ("cell".equalsIgnoreCase(type)) return Phone.Type.MOBILE;
-    else if ("work".equalsIgnoreCase(type)) return Phone.Type.WORK;
-    else                                    return Phone.Type.CUSTOM;
-  }
-
-  private Email.Type emailTypeFromContactType(int type) {
-    switch (type) {
-      case ContactsContract.CommonDataKinds.Email.TYPE_HOME:
-        return Email.Type.HOME;
-      case ContactsContract.CommonDataKinds.Email.TYPE_MOBILE:
-        return Email.Type.MOBILE;
-      case ContactsContract.CommonDataKinds.Email.TYPE_WORK:
-        return Email.Type.WORK;
-    }
-    return Email.Type.CUSTOM;
-  }
-
-  private Email.Type emailTypeFromVcardType(@Nullable String type) {
-    if      ("home".equalsIgnoreCase(type)) return Email.Type.HOME;
-    else if ("cell".equalsIgnoreCase(type)) return Email.Type.MOBILE;
-    else if ("work".equalsIgnoreCase(type)) return Email.Type.WORK;
-    else                                    return Email.Type.CUSTOM;
-  }
-
-  private PostalAddress.Type postalAddressTypeFromContactType(int type) {
-    switch (type) {
-      case ContactsContract.CommonDataKinds.StructuredPostal.TYPE_HOME:
-        return PostalAddress.Type.HOME;
-      case ContactsContract.CommonDataKinds.StructuredPostal.TYPE_WORK:
-        return PostalAddress.Type.WORK;
-    }
-    return PostalAddress.Type.CUSTOM;
-  }
-
-  private PostalAddress.Type postalAddressTypeFromVcardType(@Nullable String type) {
-    if      ("home".equalsIgnoreCase(type)) return PostalAddress.Type.HOME;
-    else if ("work".equalsIgnoreCase(type)) return PostalAddress.Type.WORK;
-    else                                    return PostalAddress.Type.CUSTOM;
-  }
-
-  private String getCleanedVcardType(@Nullable String type) {
-    if (TextUtils.isEmpty(type)) return "";
-
-    if (type.startsWith("x-") && type.length() > 2) {
-      return type.substring(2);
-    }
-
-    return type;
-  }
-
   interface ValueCallback<T> {
     void onComplete(@NonNull T value);
   }

app/src/main/java/org/thoughtcrime/securesms/contactshare/VCardUtil.java

@@ -0,0 +1,160 @@
+package org.thoughtcrime.securesms.contactshare;
+
+import android.provider.ContactsContract;
+import android.text.TextUtils;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.thoughtcrime.securesms.logging.Log;
+
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
+
+import ezvcard.Ezvcard;
+import ezvcard.VCard;
+
+public final class VCardUtil {
+
+    private VCardUtil(){}
+
+    private static final String TAG = VCardUtil.class.getSimpleName();
+
+    public static List<Contact> parseContacts(@NonNull String vCardData) {
+        List<VCard> vContacts = Ezvcard.parse(vCardData).all();
+        List<Contact> contacts = new LinkedList<>();
+        for (VCard vCard: vContacts){
+            contacts.add(getContactFromVcard(vCard));
+        }
+        return contacts;
+    }
+
+    static @Nullable Contact getContactFromVcard(@NonNull VCard vcard) {
+        ezvcard.property.StructuredName  vName            = vcard.getStructuredName();
+        List<ezvcard.property.Telephone> vPhones          = vcard.getTelephoneNumbers();
+        List<ezvcard.property.Email>     vEmails          = vcard.getEmails();
+        List<ezvcard.property.Address>   vPostalAddresses = vcard.getAddresses();
+
+        String organization = vcard.getOrganization() != null && !vcard.getOrganization().getValues().isEmpty() ? vcard.getOrganization().getValues().get(0) : null;
+        String displayName  = vcard.getFormattedName() != null ? vcard.getFormattedName().getValue() : null;
+
+        if (displayName == null && vName != null) {
+            displayName = vName.getGiven();
+        }
+
+        if (displayName == null && vcard.getOrganization() != null) {
+            displayName = organization;
+        }
+
+        if (displayName == null) {
+            Log.w(TAG, "Failed to parse the vcard: No valid name.");
+            return null;
+        }
+
+        Contact.Name name = new Contact.Name(displayName,
+                vName != null ? vName.getGiven() : null,
+                vName != null ? vName.getFamily() : null,
+                vName != null && !vName.getPrefixes().isEmpty() ? vName.getPrefixes().get(0) : null,
+                vName != null && !vName.getSuffixes().isEmpty() ? vName.getSuffixes().get(0) : null,
+                null);
+
+
+        List<Contact.Phone> phoneNumbers = new ArrayList<>(vPhones.size());
+        for (ezvcard.property.Telephone vEmail : vPhones) {
+            String label = !vEmail.getTypes().isEmpty() ? getCleanedVcardType(vEmail.getTypes().get(0).getValue()) : null;
+
+            // Phone number is stored in the uri field in v4.0 only. In other versions, it is in the text field.
+            String phoneNumberFromText  = vEmail.getText();
+            String extractedPhoneNumber = phoneNumberFromText == null ? vEmail.getUri().getNumber() : phoneNumberFromText;
+            phoneNumbers.add(new Contact.Phone(extractedPhoneNumber, phoneTypeFromVcardType(label), label));
+        }
+
+        List<Contact.Email> emails = new ArrayList<>(vEmails.size());
+        for (ezvcard.property.Email vEmail : vEmails) {
+            String label = !vEmail.getTypes().isEmpty() ? getCleanedVcardType(vEmail.getTypes().get(0).getValue()) : null;
+            emails.add(new Contact.Email(vEmail.getValue(), emailTypeFromVcardType(label), label));
+        }
+
+        List<Contact.PostalAddress> postalAddresses = new ArrayList<>(vPostalAddresses.size());
+        for (ezvcard.property.Address vPostalAddress : vPostalAddresses) {
+            String label = !vPostalAddress.getTypes().isEmpty() ? getCleanedVcardType(vPostalAddress.getTypes().get(0).getValue()) : null;
+            postalAddresses.add(new Contact.PostalAddress(postalAddressTypeFromVcardType(label),
+                    label,
+                    vPostalAddress.getStreetAddress(),
+                    vPostalAddress.getPoBox(),
+                    null,
+                    vPostalAddress.getLocality(),
+                    vPostalAddress.getRegion(),
+                    vPostalAddress.getPostalCode(),
+                    vPostalAddress.getCountry()));
+        }
+
+        return new Contact(name, organization, phoneNumbers, emails, postalAddresses, null);
+    }
+
+    static Contact.Phone.Type phoneTypeFromContactType(int type) {
+        switch (type) {
+            case ContactsContract.CommonDataKinds.Phone.TYPE_HOME:
+                return Contact.Phone.Type.HOME;
+            case ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE:
+                return Contact.Phone.Type.MOBILE;
+            case ContactsContract.CommonDataKinds.Phone.TYPE_WORK:
+                return Contact.Phone.Type.WORK;
+        }
+        return Contact.Phone.Type.CUSTOM;
+    }
+
+    private static Contact.Phone.Type phoneTypeFromVcardType(@Nullable String type) {
+        if      ("home".equalsIgnoreCase(type)) return Contact.Phone.Type.HOME;
+        else if ("cell".equalsIgnoreCase(type)) return Contact.Phone.Type.MOBILE;
+        else if ("work".equalsIgnoreCase(type)) return Contact.Phone.Type.WORK;
+        else                                    return Contact.Phone.Type.CUSTOM;
+    }
+
+    static Contact.Email.Type emailTypeFromContactType(int type) {
+        switch (type) {
+            case ContactsContract.CommonDataKinds.Email.TYPE_HOME:
+                return Contact.Email.Type.HOME;
+            case ContactsContract.CommonDataKinds.Email.TYPE_MOBILE:
+                return Contact.Email.Type.MOBILE;
+            case ContactsContract.CommonDataKinds.Email.TYPE_WORK:
+                return Contact.Email.Type.WORK;
+        }
+        return Contact.Email.Type.CUSTOM;
+    }
+
+    private static Contact.Email.Type emailTypeFromVcardType(@Nullable String type) {
+        if      ("home".equalsIgnoreCase(type)) return Contact.Email.Type.HOME;
+        else if ("cell".equalsIgnoreCase(type)) return Contact.Email.Type.MOBILE;
+        else if ("work".equalsIgnoreCase(type)) return Contact.Email.Type.WORK;
+        else                                    return Contact.Email.Type.CUSTOM;
+    }
+
+    static Contact.PostalAddress.Type postalAddressTypeFromContactType(int type) {
+        switch (type) {
+            case ContactsContract.CommonDataKinds.StructuredPostal.TYPE_HOME:
+                return Contact.PostalAddress.Type.HOME;
+            case ContactsContract.CommonDataKinds.StructuredPostal.TYPE_WORK:
+                return Contact.PostalAddress.Type.WORK;
+        }
+        return Contact.PostalAddress.Type.CUSTOM;
+    }
+
+    private static Contact.PostalAddress.Type postalAddressTypeFromVcardType(@Nullable String type) {
+        if      ("home".equalsIgnoreCase(type)) return Contact.PostalAddress.Type.HOME;
+        else if ("work".equalsIgnoreCase(type)) return Contact.PostalAddress.Type.WORK;
+        else                                    return Contact.PostalAddress.Type.CUSTOM;
+    }
+
+    private static String getCleanedVcardType(@Nullable String type) {
+        if (TextUtils.isEmpty(type)) return "";
+
+        if (type.startsWith("x-") && type.length() > 2) {
+            return type.substring(2);
+        }
+
+        return type;
+    }
+
+}

app/src/main/java/org/thoughtcrime/securesms/conversation/AttachmentKeyboard.java

@@ -1,8 +1,6 @@
 package org.thoughtcrime.securesms.conversation;
 
-import android.Manifest;
 import android.content.Context;
-import android.content.pm.PackageManager;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
@@ -10,7 +8,6 @@ import android.widget.FrameLayout;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.core.content.ContextCompat;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
@@ -19,6 +16,7 @@ import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.components.InputAwareLayout;
 import org.thoughtcrime.securesms.mediasend.Media;
 import org.thoughtcrime.securesms.mms.GlideApp;
+import org.thoughtcrime.securesms.util.StorageUtil;
 
 import java.util.Arrays;
 import java.util.List;
@@ -84,7 +82,7 @@ public class AttachmentKeyboard extends FrameLayout implements InputAwareLayout.
   }
 
   public void onMediaChanged(@NonNull List<Media> media) {
-    if (ContextCompat.checkSelfPermission(getContext(), Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+    if (StorageUtil.canReadFromMediaStore()) {
       mediaAdapter.setMedia(media);
       permissionButton.setVisibility(GONE);
       permissionText.setVisibility(GONE);

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationActivity.java

@@ -98,7 +98,6 @@ import org.thoughtcrime.securesms.VerifyIdentityActivity;
 import org.thoughtcrime.securesms.attachments.Attachment;
 import org.thoughtcrime.securesms.attachments.TombstoneAttachment;
 import org.thoughtcrime.securesms.audio.AudioRecorder;
-import org.thoughtcrime.securesms.audio.AudioSlidePlayer;
 import org.thoughtcrime.securesms.color.MaterialColor;
 import org.thoughtcrime.securesms.components.AnimatingToggle;
 import org.thoughtcrime.securesms.components.ComposeText;
@@ -116,6 +115,7 @@ import org.thoughtcrime.securesms.components.identity.UnverifiedBannerView;
 import org.thoughtcrime.securesms.components.location.SignalPlace;
 import org.thoughtcrime.securesms.components.mention.MentionAnnotation;
 import org.thoughtcrime.securesms.components.reminder.ExpiredBuildReminder;
+import org.thoughtcrime.securesms.components.reminder.PendingGroupJoinRequestsReminder;
 import org.thoughtcrime.securesms.components.reminder.Reminder;
 import org.thoughtcrime.securesms.components.reminder.ReminderView;
 import org.thoughtcrime.securesms.components.reminder.ServiceOutageReminder;
@@ -163,6 +163,7 @@ import org.thoughtcrime.securesms.groups.ui.GroupChangeFailureReason;
 import org.thoughtcrime.securesms.groups.ui.GroupChangeResult;
 import org.thoughtcrime.securesms.groups.ui.GroupErrors;
 import org.thoughtcrime.securesms.groups.ui.LeaveGroupDialog;
+import org.thoughtcrime.securesms.groups.ui.invitesandrequests.ManagePendingAndRequestingMembersActivity;
 import org.thoughtcrime.securesms.groups.ui.managegroup.ManageGroupActivity;
 import org.thoughtcrime.securesms.insights.InsightsLauncher;
 import org.thoughtcrime.securesms.invites.InviteReminderModel;
@@ -366,6 +367,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
   private ConversationViewModel        viewModel;
   private InviteReminderModel          inviteReminderModel;
   private ConversationGroupViewModel   groupViewModel;
+  private MentionsPickerViewModel      mentionsViewModel;
 
   private LiveRecipient recipient;
   private long          threadId;
@@ -442,8 +444,9 @@ public class ConversationActivity extends PassphraseRequiredActivity
     initializeStickerObserver();
     initializeViewModel();
     initializeGroupViewModel();
-    if (FeatureFlags.mentions()) initializeMentionsViewModel();
+    initializeMentionsViewModel();
     initializeEnabledCheck();
+    initializePendingRequestsBanner();
     initializeSecurity(recipient.get().isRegistered(), isDefaultSms).addListener(new AssertedSuccessListener<Boolean>() {
       @Override
       public void onSuccess(Boolean result) {
@@ -556,7 +559,6 @@ public class ConversationActivity extends PassphraseRequiredActivity
 
     fragment.setLastSeen(System.currentTimeMillis());
     markLastSeen();
-    AudioSlidePlayer.stopAll();
     EventBus.getDefault().unregister(this);
   }
 
@@ -676,11 +678,11 @@ public class ConversationActivity extends PassphraseRequiredActivity
 
       for (Media mediaItem : result.getNonUploadedMedia()) {
         if (MediaUtil.isVideoType(mediaItem.getMimeType())) {
-          slideDeck.addSlide(new VideoSlide(this, mediaItem.getUri(), 0, mediaItem.getCaption().orNull(), mediaItem.getTransformProperties().orNull()));
+          slideDeck.addSlide(new VideoSlide(this, mediaItem.getUri(), mediaItem.getSize(), mediaItem.getWidth(), mediaItem.getHeight(), mediaItem.getCaption().orNull(), mediaItem.getTransformProperties().orNull()));
         } else if (MediaUtil.isGif(mediaItem.getMimeType())) {
-          slideDeck.addSlide(new GifSlide(this, mediaItem.getUri(), 0, mediaItem.getWidth(), mediaItem.getHeight(), mediaItem.isBorderless(), mediaItem.getCaption().orNull()));
+          slideDeck.addSlide(new GifSlide(this, mediaItem.getUri(), mediaItem.getSize(), mediaItem.getWidth(), mediaItem.getHeight(), mediaItem.isBorderless(), mediaItem.getCaption().orNull()));
         } else if (MediaUtil.isImageType(mediaItem.getMimeType())) {
-          slideDeck.addSlide(new ImageSlide(this, mediaItem.getUri(), mediaItem.getMimeType(), 0, mediaItem.getWidth(), mediaItem.getHeight(), mediaItem.isBorderless(), mediaItem.getCaption().orNull(), null));
+          slideDeck.addSlide(new ImageSlide(this, mediaItem.getUri(), mediaItem.getMimeType(), mediaItem.getSize(), mediaItem.getWidth(), mediaItem.getHeight(), mediaItem.isBorderless(), mediaItem.getCaption().orNull(), null));
         } else {
           Log.w(TAG, "Asked to send an unexpected mimeType: '" + mediaItem.getMimeType() + "'. Skipping.");
         }
@@ -815,10 +817,9 @@ public class ConversationActivity extends PassphraseRequiredActivity
         } else {
           menu.findItem(R.id.menu_distribution_conversation).setChecked(true);
         }
-        inflater.inflate(R.menu.conversation_active_group_options, menu);
-      } else if (isActiveV2Group || isActiveGroup) {
-        inflater.inflate(R.menu.conversation_active_group_options, menu);
       }
+
+      inflater.inflate(R.menu.conversation_active_group_options, menu);
     }
 
     inflater.inflate(R.menu.conversation, menu);
@@ -865,7 +866,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     if (isActiveV2Group) {
       hideMenuItem(menu, R.id.menu_mute_notifications);
       hideMenuItem(menu, R.id.menu_conversation_settings);
-    } else if (isActiveGroup) {
+    } else if (isGroupConversation()) {
       hideMenuItem(menu, R.id.menu_conversation_settings);
     }
 
@@ -1033,6 +1034,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     Permissions.with(this)
                .request(Manifest.permission.READ_EXTERNAL_STORAGE)
                .onAllGranted(() -> viewModel.onAttachmentKeyboardOpen())
+               .withPermanentDenialDialog(getString(R.string.AttachmentManager_signal_requires_the_external_storage_permission_in_order_to_attach_photos_videos_or_audio))
                .execute();
   }
 
@@ -1527,6 +1529,11 @@ public class ConversationActivity extends PassphraseRequiredActivity
     });
   }
 
+  private void initializePendingRequestsBanner() {
+    groupViewModel.getActionableRequestingMembers()
+                  .observe(this, actionablePendingGroupRequests -> updateReminders());
+  }
+
   private ListenableFuture<Boolean> initializeDraftFromDatabase() {
     SettableFuture<Boolean> future = new SettableFuture<>();
 
@@ -1680,7 +1687,8 @@ public class ConversationActivity extends PassphraseRequiredActivity
   }
 
   protected void updateReminders() {
-    Optional<Reminder> inviteReminder = inviteReminderModel.getReminder();
+    Optional<Reminder> inviteReminder              = inviteReminderModel.getReminder();
+    Integer            actionableRequestingMembers = groupViewModel.getActionableRequestingMembers().getValue();
 
     if (UnauthorizedReminder.isEligible(this)) {
       reminderView.get().showReminder(new UnauthorizedReminder(this));
@@ -1698,6 +1706,13 @@ public class ConversationActivity extends PassphraseRequiredActivity
       reminderView.get().setOnActionClickListener(this::handleReminderAction);
       reminderView.get().setOnDismissListener(() -> inviteReminderModel.dismissReminder());
       reminderView.get().showReminder(inviteReminder.get());
+    } else if (actionableRequestingMembers != null && actionableRequestingMembers > 0 && FeatureFlags.groupsV2manageGroupLinks()) {
+      reminderView.get().showReminder(PendingGroupJoinRequestsReminder.create(this, actionableRequestingMembers));
+      reminderView.get().setOnActionClickListener(id -> {
+        if (id == R.id.reminder_action_review_join_requests) {
+          startActivity(ManagePendingAndRequestingMembersActivity.newIntent(this, getRecipient().getGroupId().get().requireV2()));
+        }
+      });
     } else if (reminderView.resolved()) {
       reminderView.get().hide();
     }
@@ -1913,13 +1928,10 @@ public class ConversationActivity extends PassphraseRequiredActivity
       if (previewState == null) return;
 
       if (previewState.isLoading()) {
-        Log.d(TAG, "Loading link preview.");
         inputPanel.setLinkPreviewLoading();
       } else if (previewState.hasLinks() && !previewState.getLinkPreview().isPresent()) {
-        Log.d(TAG, "No preview found.");
         inputPanel.setLinkPreviewNoPreview(previewState.getError());
       } else {
-        Log.d(TAG, "Setting link preview: " + previewState.getLinkPreview().isPresent());
         inputPanel.setLinkPreview(glideRequests, previewState.getLinkPreview());
       }
 
@@ -1984,7 +1996,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
   }
 
   private void initializeMentionsViewModel() {
-    MentionsPickerViewModel mentionsViewModel = ViewModelProviders.of(this, new MentionsPickerViewModel.Factory()).get(MentionsPickerViewModel.class);
+    mentionsViewModel = ViewModelProviders.of(this, new MentionsPickerViewModel.Factory()).get(MentionsPickerViewModel.class);
 
     recipient.observe(this, r -> {
       if (r.isPushV2Group() && !mentionsSuggestions.resolved()) {
@@ -1994,7 +2006,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     });
 
     composeText.setMentionQueryChangedListener(query -> {
-      if (getRecipient().isPushV2Group()) {
+      if (getRecipient().isPushV2Group() && getRecipient().isActiveGroup()) {
         if (!mentionsSuggestions.resolved()) {
           mentionsSuggestions.get();
         }
@@ -2003,7 +2015,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     });
 
     composeText.setMentionValidator(annotations -> {
-      if (!getRecipient().isPushV2Group()) {
+      if (!getRecipient().isPushV2Group() || !getRecipient().isActiveGroup()) {
         return annotations;
       }
 
@@ -2126,6 +2138,10 @@ public class ConversationActivity extends PassphraseRequiredActivity
     if (groupViewModel != null) {
       groupViewModel.onRecipientChange(recipient);
     }
+
+    if (mentionsViewModel != null) {
+      mentionsViewModel.onRecipientChange(recipient);
+    }
   }
 
   @Subscribe(threadMode = ThreadMode.MAIN)
@@ -2230,6 +2246,10 @@ public class ConversationActivity extends PassphraseRequiredActivity
   private Drafts getDraftsForCurrentState() {
     Drafts drafts = new Drafts();
 
+    if (recipient.get().isGroup() && !recipient.get().isActiveGroup()) {
+      return drafts;
+    }
+
     if (!Util.isEmpty(composeText)) {
       drafts.add(new Draft(Draft.TEXT, composeText.getTextTrimmed().toString()));
       List<Mention> draftMentions = composeText.getMentions();
@@ -3039,7 +3059,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     messageRequestBottomView.setBlockOnClickListener(v -> onMessageRequestBlockClicked(viewModel));
     messageRequestBottomView.setUnblockOnClickListener(v -> onMessageRequestUnblockClicked(viewModel));
 
-    viewModel.getRecipient().observe(this, this::presentMessageRequestBottomViewTo);
+    viewModel.getMessageData().observe(this, this::presentMessageRequestBottomViewTo);
     viewModel.getMessageRequestDisplayState().observe(this, this::presentMessageRequestDisplayState);
     viewModel.getFailures().observe(this, this::showGroupChangeErrorToast);
     viewModel.getMessageRequestStatus().observe(this, status -> {
@@ -3084,7 +3104,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
   {
     reactionOverlay.setOnToolbarItemClickedListener(toolbarListener);
     reactionOverlay.setOnHideListener(onHideListener);
-    reactionOverlay.show(this, maskTarget, messageRecord, inputAreaHeight());
+    reactionOverlay.show(this, maskTarget, recipient.get(), messageRecord, inputAreaHeight());
   }
 
   @Override
@@ -3272,7 +3292,10 @@ public class ConversationActivity extends PassphraseRequiredActivity
   }
 
   private void presentMessageRequestDisplayState(@NonNull MessageRequestViewModel.DisplayState displayState) {
-    if (getIntent().hasExtra(TEXT_EXTRA) || getIntent().hasExtra(MEDIA_EXTRA) || getIntent().hasExtra(STICKER_EXTRA)) {
+    if ((getIntent().hasExtra(TEXT_EXTRA) && !Util.isEmpty(getIntent().getStringExtra(TEXT_EXTRA))) ||
+         getIntent().hasExtra(MEDIA_EXTRA)                                                          ||
+         getIntent().hasExtra(STICKER_EXTRA))
+    {
       Log.d(TAG, "[presentMessageRequestDisplayState] Have extra, so ignoring provided state.");
       messageRequestBottomView.setVisibility(View.GONE);
     } else if (isPushGroupV1Conversation() && !isActiveGroup()) {
@@ -3287,7 +3310,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
             groupShareProfileView.get().setVisibility(View.GONE);
           }
           break;
-        case DISPLAY_LEGACY:
+        case DISPLAY_PRE_MESSAGE_REQUEST:
           if (recipient.get().isGroup()) {
             groupShareProfileView.get().setRecipient(recipient.get());
             groupShareProfileView.get().setVisibility(View.VISIBLE);
@@ -3337,7 +3360,6 @@ public class ConversationActivity extends PassphraseRequiredActivity
     long       expiresIn      = recipient.get().getExpireMessages() * 1000L;
     int        subscriptionId = sendButton.getSelectedTransport().getSimSubscriptionId().or(-1);
     boolean    initiating     = threadId == -1;
-    QuoteModel quote          = inputPanel.getQuote().orNull();
     SlideDeck  slideDeck      = new SlideDeck();
 
     if (MediaUtil.isGif(contentType)) {
@@ -3351,7 +3373,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     sendMediaMessage(isSmsForced(),
                      "",
                      slideDeck,
-                     quote,
+                     null,
                      Collections.emptyList(),
                      Collections.emptyList(),
                      composeText.getMentions(),
@@ -3359,7 +3381,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
                      false,
                      subscriptionId,
                      initiating,
-                     true);
+                     false);
   }
 
   private class UnverifiedDismissedListener implements UnverifiedBannerView.DismissListener {
@@ -3453,10 +3475,10 @@ public class ConversationActivity extends PassphraseRequiredActivity
     }
   }
 
-  private void presentMessageRequestBottomViewTo(@Nullable Recipient recipient) {
-    if (recipient == null) return;
+  private void presentMessageRequestBottomViewTo(@Nullable MessageRequestViewModel.MessageData messageData) {
+    if (messageData == null) return;
 
-    messageRequestBottomView.setRecipient(recipient);
+    messageRequestBottomView.setMessageData(messageData);
   }
 
   private static class KeyboardImageDetails {

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationAdapter.java

@@ -27,6 +27,7 @@ import androidx.annotation.LayoutRes;
 import androidx.annotation.MainThread;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.lifecycle.LifecycleOwner;
 import androidx.paging.PagedList;
 import androidx.paging.PagedListAdapter;
 import androidx.recyclerview.widget.DiffUtil;
@@ -84,6 +85,7 @@ public class ConversationAdapter
   private static final long FOOTER_ID = Long.MIN_VALUE + 1;
 
   private final ItemClickListener clickListener;
+  private final LifecycleOwner    lifecycleOwner;
   private final GlideRequests     glideRequests;
   private final Locale            locale;
   private final Recipient         recipient;
@@ -99,12 +101,14 @@ public class ConversationAdapter
   private View                headerView;
   private View                footerView;
 
-  ConversationAdapter(@NonNull GlideRequests glideRequests,
+  ConversationAdapter(@NonNull LifecycleOwner lifecycleOwner,
+                      @NonNull GlideRequests glideRequests,
                       @NonNull Locale locale,
                       @Nullable ItemClickListener clickListener,
                       @NonNull Recipient recipient)
   {
     super(new DiffCallback());
+    this.lifecycleOwner = lifecycleOwner;
 
     this.glideRequests       = glideRequests;
     this.locale              = locale;
@@ -170,8 +174,6 @@ public class ConversationAdapter
       case MESSAGE_TYPE_OUTGOING_TEXT:
       case MESSAGE_TYPE_OUTGOING_MULTIMEDIA:
       case MESSAGE_TYPE_UPDATE:
-        long start = System.currentTimeMillis();
-
         View                     itemView = CachedInflater.from(parent.getContext()).inflate(getLayoutForViewType(viewType), parent, false);
         BindableConversationItem bindable = (BindableConversationItem) itemView;
 
@@ -190,7 +192,6 @@ public class ConversationAdapter
 
         bindable.setEventListener(clickListener);
 
-        Log.d(TAG, String.format(Locale.US, "Inflate time: %d ms for View type: %d", System.currentTimeMillis() - start, viewType));
         return new ConversationViewHolder(itemView);
       case MESSAGE_TYPE_PLACEHOLDER:
         View v = new FrameLayout(parent.getContext());
@@ -219,7 +220,8 @@ public class ConversationAdapter
         ConversationMessage previousMessage = adapterPosition < getItemCount() - 1  && !isFooterPosition(adapterPosition + 1) ? getItem(adapterPosition + 1) : null;
         ConversationMessage nextMessage     = adapterPosition > 0                   && !isHeaderPosition(adapterPosition - 1) ? getItem(adapterPosition - 1) : null;
 
-        conversationViewHolder.getBindable().bind(conversationMessage,
+        conversationViewHolder.getBindable().bind(lifecycleOwner,
+                                                  conversationMessage,
                                                   Optional.fromNullable(previousMessage != null ? previousMessage.getMessageRecord() : null),
                                                   Optional.fromNullable(nextMessage != null ? nextMessage.getMessageRecord() : null),
                                                   glideRequests,

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationDataSource.java

@@ -84,6 +84,8 @@ class ConversationDataSource extends PositionalDataSource<ConversationMessage> {
       }
     }
 
+    long mentionStart = System.currentTimeMillis();
+
     mentionHelper.fetchMentions(context);
 
     if (!isInvalid()) {
@@ -94,7 +96,7 @@ class ConversationDataSource extends PositionalDataSource<ConversationMessage> {
                                               .toList();
 
       callback.onResult(items, params.requestedStartPosition, result.getTotal());
-      Log.d(TAG, "[Initial Load] " + (System.currentTimeMillis() - start) + " ms | thread: " + threadId + ", start: " + params.requestedStartPosition + ", requestedSize: " + params.requestedLoadSize + ", actualSize: " + result.getItems().size() + ", totalCount: " + result.getTotal());
+      Log.d(TAG, "[Initial Load] " + (System.currentTimeMillis() - start) + " ms (mentions: " + (System.currentTimeMillis() - mentionStart) + " ms) | thread: " + threadId + ", start: " + params.requestedStartPosition + ", requestedSize: " + params.requestedLoadSize + ", actualSize: " + result.getItems().size() + ", totalCount: " + result.getTotal());
     } else {
       Log.d(TAG, "[Initial Load] " + (System.currentTimeMillis() - start) + " ms | thread: " + threadId + ", start: " + params.requestedStartPosition + ", requestedSize: " + params.requestedLoadSize + ", totalCount: " + totalCount + " -- invalidated");
     }
@@ -116,6 +118,8 @@ class ConversationDataSource extends PositionalDataSource<ConversationMessage> {
       }
     }
 
+    long mentionStart = System.currentTimeMillis();
+
     mentionHelper.fetchMentions(context);
 
     List<ConversationMessage> items = Stream.of(records)
@@ -123,7 +127,7 @@ class ConversationDataSource extends PositionalDataSource<ConversationMessage> {
                                             .toList();
     callback.onResult(items);
 
-    Log.d(TAG, "[Update] " + (System.currentTimeMillis() - start) + " ms | thread: " + threadId + ", start: " + params.startPosition + ", size: " + params.loadSize + (isInvalid() ? " -- invalidated" : ""));
+    Log.d(TAG, "[Update] " + (System.currentTimeMillis() - start) + " ms (mentions: " + (System.currentTimeMillis() - mentionStart) + " ms) | thread: " + threadId + ", start: " + params.startPosition + ", size: " + params.loadSize + (isInvalid() ? " -- invalidated" : ""));
   }
 
   private static class MentionHelper {

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationFragment.java

@@ -16,6 +16,7 @@
  */
 package org.thoughtcrime.securesms.conversation;
 
+import android.Manifest;
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.ClipData;
@@ -52,6 +53,7 @@ import androidx.appcompat.widget.Toolbar;
 import androidx.core.app.ActivityCompat;
 import androidx.core.app.ActivityOptionsCompat;
 import androidx.core.text.HtmlCompat;
+import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProviders;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
@@ -70,6 +72,8 @@ import org.thoughtcrime.securesms.components.ConversationScrollToView;
 import org.thoughtcrime.securesms.components.ConversationTypingView;
 import org.thoughtcrime.securesms.components.TooltipPopup;
 import org.thoughtcrime.securesms.components.recyclerview.SmoothScrollingLinearLayoutManager;
+import org.thoughtcrime.securesms.components.voice.VoiceNoteMediaController;
+import org.thoughtcrime.securesms.components.voice.VoiceNotePlaybackState;
 import org.thoughtcrime.securesms.contactshare.Contact;
 import org.thoughtcrime.securesms.contactshare.ContactUtil;
 import org.thoughtcrime.securesms.contactshare.SharedContactDetailsActivity;
@@ -99,6 +103,7 @@ import org.thoughtcrime.securesms.mms.GlideApp;
 import org.thoughtcrime.securesms.mms.OutgoingMediaMessage;
 import org.thoughtcrime.securesms.mms.PartAuthority;
 import org.thoughtcrime.securesms.mms.Slide;
+import org.thoughtcrime.securesms.permissions.Permissions;
 import org.thoughtcrime.securesms.profiles.UnknownSenderView;
 import org.thoughtcrime.securesms.providers.BlobProvider;
 import org.thoughtcrime.securesms.reactions.ReactionsBottomSheetDialogFragment;
@@ -115,12 +120,12 @@ import org.thoughtcrime.securesms.stickers.StickerLocator;
 import org.thoughtcrime.securesms.stickers.StickerPackPreviewActivity;
 import org.thoughtcrime.securesms.util.CachedInflater;
 import org.thoughtcrime.securesms.util.CommunicationActions;
-import org.thoughtcrime.securesms.util.FeatureFlags;
 import org.thoughtcrime.securesms.util.HtmlUtil;
 import org.thoughtcrime.securesms.util.RemoteDeleteUtil;
 import org.thoughtcrime.securesms.util.SaveAttachmentTask;
 import org.thoughtcrime.securesms.util.SnapToTopDataObserver;
 import org.thoughtcrime.securesms.util.StickyHeaderDecoration;
+import org.thoughtcrime.securesms.util.StorageUtil;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.ViewUtil;
@@ -179,6 +184,7 @@ public class ConversationFragment extends LoggingFragment {
   private Animation                   mentionButtonOutAnimation;
   private OnScrollListener            conversationScrollListener;
   private int                         pulsePosition = -1;
+  private VoiceNoteMediaController    voiceNoteMediaController;
 
   public static void prepare(@NonNull Context context) {
     FrameLayout parent = new FrameLayout(context);
@@ -226,7 +232,10 @@ public class ConversationFragment extends LoggingFragment {
 
     new ConversationItemSwipeCallback(
             conversationMessage -> actionMode == null &&
-                                   MenuState.canReplyToMessage(MenuState.isActionMessage(conversationMessage.getMessageRecord()), conversationMessage.getMessageRecord(), messageRequestViewModel.shouldShowMessageRequest()),
+                                   MenuState.canReplyToMessage(recipient.get(),
+                                                               MenuState.isActionMessage(conversationMessage.getMessageRecord()),
+                                                               conversationMessage.getMessageRecord(),
+                                                               messageRequestViewModel.shouldShowMessageRequest()),
             this::handleReplyMessage
     ).attachToRecyclerView(list);
 
@@ -303,6 +312,7 @@ public class ConversationFragment extends LoggingFragment {
     initializeResources();
     initializeMessageRequestViewModel();
     initializeListAdapter();
+    voiceNoteMediaController = new VoiceNoteMediaController((AppCompatActivity) requireActivity());
   }
 
   @Override
@@ -345,9 +355,17 @@ public class ConversationFragment extends LoggingFragment {
       actionMode.finish();
     }
 
+    long oldThreadId = threadId;
+
     initializeResources();
     messageRequestViewModel.setConversationInfo(recipient.getId(), threadId);
-    initializeListAdapter();
+
+    int startingPosition = getStartPosition();
+    if (startingPosition != -1 && oldThreadId == threadId) {
+      list.post(() -> moveToPosition(startingPosition, () -> Log.w(TAG, "Could not scroll to requested message.")));
+    } else {
+      initializeListAdapter();
+    }
   }
 
   public void moveToLastSeen() {
@@ -365,6 +383,10 @@ public class ConversationFragment extends LoggingFragment {
     snapToTopDataObserver.requestScrollPosition(position);
   }
 
+  private int getStartPosition() {
+    return requireActivity().getIntent().getIntExtra(ConversationActivity.STARTING_POSITION_EXTRA, -1);
+  }
+
   private void initializeMessageRequestViewModel() {
     MessageRequestViewModel.Factory factory = new MessageRequestViewModel.Factory(requireContext());
 
@@ -452,7 +474,7 @@ public class ConversationFragment extends LoggingFragment {
   private void initializeResources() {
     long oldThreadId = threadId;
 
-    int startingPosition  = this.getActivity().getIntent().getIntExtra(ConversationActivity.STARTING_POSITION_EXTRA, -1);
+    int startingPosition  = getStartPosition();
 
     this.recipient         = Recipient.live(getActivity().getIntent().getParcelableExtra(ConversationActivity.RECIPIENT_EXTRA));
     this.threadId          = this.getActivity().getIntent().getLongExtra(ConversationActivity.THREAD_ID_EXTRA, -1);
@@ -479,7 +501,7 @@ public class ConversationFragment extends LoggingFragment {
   private void initializeListAdapter() {
     if (this.recipient != null && this.threadId != -1) {
       Log.d(TAG, "Initializing adapter for " + recipient.getId());
-      ConversationAdapter adapter = new ConversationAdapter(GlideApp.with(this), locale, selectionClickListener, this.recipient.get());
+      ConversationAdapter adapter = new ConversationAdapter(this, GlideApp.with(this), locale, selectionClickListener, this.recipient.get());
       list.setAdapter(adapter);
       setStickyHeaderDecoration(adapter);
       ConversationAdapter.initializePool(list.getRecycledViewPool());
@@ -573,7 +595,7 @@ public class ConversationFragment extends LoggingFragment {
       return;
     }
 
-    MenuState menuState = MenuState.getMenuState(Stream.of(messages).map(ConversationMessage::getMessageRecord).collect(Collectors.toSet()), messageRequestViewModel.shouldShowMessageRequest());
+    MenuState menuState = MenuState.getMenuState(recipient.get(), Stream.of(messages).map(ConversationMessage::getMessageRecord).collect(Collectors.toSet()), messageRequestViewModel.shouldShowMessageRequest());
 
     menu.findItem(R.id.menu_context_forward).setVisible(menuState.shouldShowForwardAction());
     menu.findItem(R.id.menu_context_reply).setVisible(menuState.shouldShowReplyAction());
@@ -662,53 +684,7 @@ public class ConversationFragment extends LoggingFragment {
 
   private void handleDeleteMessages(final Set<ConversationMessage> conversationMessages) {
     Set<MessageRecord> messageRecords = Stream.of(conversationMessages).map(ConversationMessage::getMessageRecord).collect(Collectors.toSet());
-    if (FeatureFlags.remoteDelete()) {
-      buildRemoteDeleteConfirmationDialog(messageRecords).show();
-    } else {
-      buildLegacyDeleteConfirmationDialog(messageRecords).show();
-    }
-  }
-
-  private AlertDialog.Builder buildLegacyDeleteConfirmationDialog(Set<MessageRecord> messageRecords) {
-    int                 messagesCount = messageRecords.size();
-    AlertDialog.Builder builder       = new AlertDialog.Builder(getActivity());
-
-    builder.setIconAttribute(R.attr.dialog_alert_icon);
-    builder.setTitle(getActivity().getResources().getQuantityString(R.plurals.ConversationFragment_delete_selected_messages, messagesCount, messagesCount));
-    builder.setMessage(getActivity().getResources().getQuantityString(R.plurals.ConversationFragment_this_will_permanently_delete_all_n_selected_messages, messagesCount, messagesCount));
-    builder.setCancelable(true);
-
-    builder.setPositiveButton(R.string.delete, (dialog, which) -> {
-      new ProgressDialogAsyncTask<Void, Void, Void>(getActivity(),
-                                                    R.string.ConversationFragment_deleting,
-                                                    R.string.ConversationFragment_deleting_messages)
-      {
-        @Override
-        protected Void doInBackground(Void... voids) {
-          for (MessageRecord messageRecord : messageRecords) {
-            boolean threadDeleted;
-
-            if (messageRecord.isMms()) {
-              threadDeleted = DatabaseFactory.getMmsDatabase(getActivity()).deleteMessage(messageRecord.getId());
-            } else {
-              threadDeleted = DatabaseFactory.getSmsDatabase(getActivity()).deleteMessage(messageRecord.getId());
-            }
-
-            if (threadDeleted) {
-              threadId = -1;
-              conversationViewModel.clearThreadId();
-              messageCountsViewModel.clearThreadId();
-              listener.setThreadId(threadId);
-            }
-          }
-
-          return null;
-        }
-      }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-    });
-
-    builder.setNegativeButton(android.R.string.cancel, null);
-    return builder;
+    buildRemoteDeleteConfirmationDialog(messageRecords).show();
   }
 
   private AlertDialog.Builder buildRemoteDeleteConfirmationDialog(Set<MessageRecord> messageRecords) {
@@ -769,7 +745,7 @@ public class ConversationFragment extends LoggingFragment {
       deleteForEveryone.run();
     } else {
       new AlertDialog.Builder(requireActivity())
-                     .setMessage(R.string.ConversationFragment_this_message_will_be_permanently_deleted_for_everyone)
+                     .setMessage(R.string.ConversationFragment_this_message_will_be_deleted_for_everyone_in_the_conversation)
                      .setPositiveButton(R.string.ConversationFragment_delete_for_everyone, (dialog, which) -> {
                        SignalStore.uiHints().markHasConfirmedDeleteForEveryoneOnce();
                        deleteForEveryone.run();
@@ -810,7 +786,7 @@ public class ConversationFragment extends LoggingFragment {
                                                .toList();
 
           for (Attachment attachment : attachments) {
-            Uri uri = attachment.getDataUri() != null ? attachment.getDataUri() : attachment.getThumbnailUri();
+            Uri uri = attachment.getUri();
 
             if (uri != null) {
               mediaList.add(new Media(uri,
@@ -881,26 +857,40 @@ public class ConversationFragment extends LoggingFragment {
       throw new AssertionError("Cannot save a view-once message.");
     }
 
-    SaveAttachmentTask.showWarningDialog(getActivity(), new DialogInterface.OnClickListener() {
-      public void onClick(DialogInterface dialog, int which) {
-        List<SaveAttachmentTask.Attachment> attachments = Stream.of(message.getSlideDeck().getSlides())
-                                                                .filter(s -> s.getUri() != null && (s.hasImage() || s.hasVideo() || s.hasAudio() || s.hasDocument()))
-                                                                .map(s -> new SaveAttachmentTask.Attachment(s.getUri(), s.getContentType(), message.getDateReceived(), s.getFileName().orNull()))
-                                                                .toList();
-        if (!Util.isEmpty(attachments)) {
-          SaveAttachmentTask saveTask = new SaveAttachmentTask(getActivity());
-          saveTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, attachments.toArray(new SaveAttachmentTask.Attachment[0]));
-          return;
-        }
-
-        Log.w(TAG, "No slide with attachable media found, failing nicely.");
-        Toast.makeText(getActivity(),
-                       getResources().getQuantityString(R.plurals.ConversationFragment_error_while_saving_attachments_to_sd_card, 1),
-                       Toast.LENGTH_LONG).show();
+    SaveAttachmentTask.showWarningDialog(getActivity(), (dialog, which) -> {
+      if (StorageUtil.canWriteToMediaStore()) {
+        performSave(message);
+        return;
       }
+
+      Permissions.with(this)
+                 .request(Manifest.permission.WRITE_EXTERNAL_STORAGE)
+                 .ifNecessary()
+                 .withPermanentDenialDialog(getString(R.string.MediaPreviewActivity_signal_needs_the_storage_permission_in_order_to_write_to_external_storage_but_it_has_been_permanently_denied))
+                 .onAnyDenied(() -> Toast.makeText(requireContext(), R.string.MediaPreviewActivity_unable_to_write_to_external_storage_without_permission, Toast.LENGTH_LONG).show())
+                 .onAllGranted(() -> performSave(message))
+                 .execute();
     });
   }
 
+  private void performSave(final MediaMmsMessageRecord message) {
+    List<SaveAttachmentTask.Attachment> attachments = Stream.of(message.getSlideDeck().getSlides())
+                                                            .filter(s -> s.getUri() != null && (s.hasImage() || s.hasVideo() || s.hasAudio() || s.hasDocument()))
+                                                            .map(s -> new SaveAttachmentTask.Attachment(s.getUri(), s.getContentType(), message.getDateReceived(), s.getFileName().orNull()))
+                                                            .toList();
+
+    if (!Util.isEmpty(attachments)) {
+      SaveAttachmentTask saveTask = new SaveAttachmentTask(getActivity());
+      saveTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, attachments.toArray(new SaveAttachmentTask.Attachment[0]));
+      return;
+    }
+
+    Log.w(TAG, "No slide with attachable media found, failing nicely.");
+    Toast.makeText(getActivity(),
+                   getResources().getQuantityString(R.plurals.ConversationFragment_error_while_saving_attachments_to_sd_card, 1),
+                   Toast.LENGTH_LONG).show();
+  }
+
   private void clearHeaderIfNotTyping(ConversationAdapter adapter) {
     if (adapter.getHeaderView() != typingView) {
       adapter.setHeaderView(null);
@@ -1223,11 +1213,12 @@ public class ConversationFragment extends LoggingFragment {
 
       MessageRecord messageRecord = conversationMessage.getMessageRecord();
 
-      if (messageRecord.isSecure()                            &&
-          !messageRecord.isRemoteDelete()                     &&
-          !messageRecord.isUpdate()                           &&
-          !recipient.get().isBlocked()                        &&
-          !messageRequestViewModel.shouldShowMessageRequest() &&
+      if (messageRecord.isSecure()                                        &&
+          !messageRecord.isRemoteDelete()                                 &&
+          !messageRecord.isUpdate()                                       &&
+          !recipient.get().isBlocked()                                    &&
+          !messageRequestViewModel.shouldShowMessageRequest()             &&
+          (!recipient.get().isGroup() || recipient.get().isActiveGroup()) &&
           ((ConversationAdapter) list.getAdapter()).getSelectedItems().isEmpty())
       {
         isReacting = true;
@@ -1397,6 +1388,31 @@ public class ConversationFragment extends LoggingFragment {
       listener.onMessageWithErrorClicked(messageRecord);
     }
 
+    @Override
+    public void onVoiceNotePause(@NonNull Uri uri) {
+      voiceNoteMediaController.pausePlayback(uri);
+    }
+
+    @Override
+    public void onVoiceNotePlay(@NonNull Uri uri, long messageId, double progress) {
+      voiceNoteMediaController.startConsecutivePlayback(uri, messageId, progress);
+    }
+
+    @Override
+    public void onVoiceNoteSeekTo(@NonNull Uri uri, double progress) {
+      voiceNoteMediaController.seekToPosition(uri, progress);
+    }
+
+    @Override
+    public void onRegisterVoiceNoteCallbacks(@NonNull Observer<VoiceNotePlaybackState> onPlaybackStartObserver) {
+      voiceNoteMediaController.getVoiceNotePlaybackState().observe(getViewLifecycleOwner(), onPlaybackStartObserver);
+    }
+
+    @Override
+    public void onUnregisterVoiceNoteCallbacks(@NonNull Observer<VoiceNotePlaybackState> onPlaybackStartObserver) {
+      voiceNoteMediaController.getVoiceNotePlaybackState().removeObserver(onPlaybackStartObserver);
+    }
+
     @Override
     public boolean onUrlClicked(@NonNull String url) {
       return CommunicationActions.handlePotentialGroupLinkUrl(requireActivity(), url);
@@ -1424,7 +1440,10 @@ public class ConversationFragment extends LoggingFragment {
     public ConversationSnapToTopDataObserver(@NonNull RecyclerView recyclerView,
                                              @Nullable ScrollRequestValidator scrollRequestValidator)
     {
-      super(recyclerView, scrollRequestValidator);
+      super(recyclerView, scrollRequestValidator, () -> {
+        list.scrollToPosition(0);
+        list.post(ConversationFragment.this::postMarkAsReadRequest);
+      });
     }
 
     @Override

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationGroupViewModel.java

@@ -20,6 +20,7 @@ import org.thoughtcrime.securesms.groups.GroupManager;
 import org.thoughtcrime.securesms.groups.ui.GroupChangeFailureReason;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.util.AsynchronousCallback;
+import org.thoughtcrime.securesms.util.FeatureFlags;
 import org.thoughtcrime.securesms.util.concurrent.SignalExecutors;
 import org.thoughtcrime.securesms.util.livedata.LiveDataUtil;
 
@@ -30,20 +31,29 @@ final class ConversationGroupViewModel extends ViewModel {
   private final MutableLiveData<Recipient>          liveRecipient;
   private final LiveData<GroupActiveState>          groupActiveState;
   private final LiveData<GroupDatabase.MemberLevel> selfMembershipLevel;
+  private final LiveData<Integer>                   actionableRequestingMembers;
 
   private ConversationGroupViewModel() {
     this.liveRecipient = new MutableLiveData<>();
 
     LiveData<GroupRecord> groupRecord = LiveDataUtil.mapAsync(liveRecipient, ConversationGroupViewModel::getGroupRecordForRecipient);
 
-    this.groupActiveState    = Transformations.distinctUntilChanged(Transformations.map(groupRecord, ConversationGroupViewModel::mapToGroupActiveState));
-    this.selfMembershipLevel = Transformations.distinctUntilChanged(Transformations.map(groupRecord, ConversationGroupViewModel::mapToSelfMembershipLevel));
+    this.groupActiveState            = Transformations.distinctUntilChanged(Transformations.map(groupRecord, ConversationGroupViewModel::mapToGroupActiveState));
+    this.selfMembershipLevel         = Transformations.distinctUntilChanged(Transformations.map(groupRecord, ConversationGroupViewModel::mapToSelfMembershipLevel));
+    this.actionableRequestingMembers = Transformations.distinctUntilChanged(Transformations.map(groupRecord, ConversationGroupViewModel::mapToActionableRequestingMemberCount));
   }
 
   void onRecipientChange(Recipient recipient) {
     liveRecipient.setValue(recipient);
   }
 
+  /**
+   * The number of pending group join requests that can be actioned by this client.
+   */
+  LiveData<Integer> getActionableRequestingMembers() {
+    return actionableRequestingMembers;
+  }
+
   LiveData<GroupActiveState> getGroupActiveState() {
     return groupActiveState;
   }
@@ -62,6 +72,20 @@ final class ConversationGroupViewModel extends ViewModel {
     }
   }
 
+  private static int mapToActionableRequestingMemberCount(@Nullable GroupRecord record) {
+    if (record != null                          &&
+        FeatureFlags.groupsV2manageGroupLinks() &&
+        record.isV2Group()                      &&
+        record.memberLevel(Recipient.self()) == GroupDatabase.MemberLevel.ADMINISTRATOR)
+    {
+      return record.requireV2GroupProperties()
+                   .getDecryptedGroup()
+                   .getRequestingMembersCount();
+    } else {
+      return 0;
+    }
+  }
+
   private static GroupActiveState mapToGroupActiveState(@Nullable GroupRecord record) {
     if (record == null) {
       return null;

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationItem.java

@@ -54,6 +54,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.core.content.ContextCompat;
+import androidx.lifecycle.LifecycleOwner;
 
 import com.annimon.stream.Stream;
 
@@ -79,8 +80,6 @@ import org.thoughtcrime.securesms.contactshare.Contact;
 import org.thoughtcrime.securesms.database.AttachmentDatabase;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.database.MessageDatabase;
-import org.thoughtcrime.securesms.database.MmsDatabase;
-import org.thoughtcrime.securesms.database.SmsDatabase;
 import org.thoughtcrime.securesms.database.documents.IdentityKeyMismatch;
 import org.thoughtcrime.securesms.database.model.MediaMmsMessageRecord;
 import org.thoughtcrime.securesms.database.model.MessageRecord;
@@ -116,9 +115,9 @@ import org.thoughtcrime.securesms.util.LongClickMovementMethod;
 import org.thoughtcrime.securesms.util.SearchUtil;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.thoughtcrime.securesms.util.ThemeUtil;
+import org.thoughtcrime.securesms.util.UrlClickHandler;
 import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.VibrateUtil;
-import org.thoughtcrime.securesms.util.UrlClickHandler;
 import org.thoughtcrime.securesms.util.ViewUtil;
 import org.thoughtcrime.securesms.util.views.Stub;
 import org.whispersystems.libsignal.util.guava.Optional;
@@ -250,7 +249,8 @@ public class ConversationItem extends LinearLayout implements BindableConversati
   }
 
   @Override
-  public void bind(@NonNull ConversationMessage conversationMessage,
+  public void bind(@NonNull LifecycleOwner lifecycleOwner,
+                   @NonNull ConversationMessage conversationMessage,
                    @NonNull Optional<MessageRecord> previousMessageRecord,
                    @NonNull Optional<MessageRecord> nextMessageRecord,
                    @NonNull GlideRequests glideRequests,
@@ -336,6 +336,16 @@ public class ConversationItem extends LinearLayout implements BindableConversati
       }
     }
 
+    if (hasSharedContact(messageRecord)) {
+      int contactWidth   = sharedContactStub.get().getMeasuredWidth();
+      int availableWidth = getAvailableMessageBubbleWidth(sharedContactStub.get());
+
+      if (contactWidth != availableWidth) {
+        sharedContactStub.get().getLayoutParams().width = availableWidth;
+        needsMeasure = true;
+      }
+    }
+
     ConversationItemFooter activeFooter   = getActiveFooter(messageRecord);
     int                    availableWidth = getAvailableMessageBubbleWidth(footer);
 
@@ -397,6 +407,9 @@ public class ConversationItem extends LinearLayout implements BindableConversati
       conversationRecipient.removeForeverObserver(this);
     }
     cancelPulseOutlinerAnimation();
+    if (eventListener != null && audioViewStub.resolved()) {
+      eventListener.onUnregisterVoiceNoteCallbacks(audioViewStub.get().getPlaybackStateObserver());
+    }
   }
 
   public ConversationMessage getConversationMessage() {
@@ -410,14 +423,17 @@ public class ConversationItem extends LinearLayout implements BindableConversati
       bodyBubble.getBackground().setColorFilter(defaultBubbleColor, PorterDuff.Mode.MULTIPLY);
       footer.setTextColor(ThemeUtil.getThemedColor(context, R.attr.conversation_item_sent_text_secondary_color));
       footer.setIconColor(ThemeUtil.getThemedColor(context, R.attr.conversation_item_sent_icon_color));
+      footer.setOnlyShowSendingStatus(false, messageRecord);
     } else if (messageRecord.isRemoteDelete() || (isViewOnceMessage(messageRecord) && ViewOnceUtil.isViewed((MmsMessageRecord) messageRecord))) {
       bodyBubble.getBackground().setColorFilter(ThemeUtil.getThemedColor(context, R.attr.conversation_item_reveal_viewed_background_color), PorterDuff.Mode.MULTIPLY);
       footer.setTextColor(ThemeUtil.getThemedColor(context, R.attr.conversation_item_sent_text_secondary_color));
       footer.setIconColor(ThemeUtil.getThemedColor(context, R.attr.conversation_item_sent_icon_color));
+      footer.setOnlyShowSendingStatus(messageRecord.isRemoteDelete(), messageRecord);
     } else {
       bodyBubble.getBackground().setColorFilter(messageRecord.getRecipient().getColor().toConversationColor(context), PorterDuff.Mode.MULTIPLY);
       footer.setTextColor(ThemeUtil.getThemedColor(context, R.attr.conversation_item_received_text_secondary_color));
       footer.setIconColor(ThemeUtil.getThemedColor(context, R.attr.conversation_item_received_text_secondary_color));
+      footer.setOnlyShowSendingStatus(false, messageRecord);
     }
 
     outliner.setColor(ThemeUtil.getThemedColor(getContext(), R.attr.conversation_item_sent_text_secondary_color));
@@ -642,7 +658,11 @@ public class ConversationItem extends LinearLayout implements BindableConversati
   {
     boolean showControls = !messageRecord.isFailed();
 
-    if (isViewOnceMessage(messageRecord)) {
+    if (eventListener != null && audioViewStub.resolved()) {
+      eventListener.onUnregisterVoiceNoteCallbacks(audioViewStub.get().getPlaybackStateObserver());
+    }
+
+    if (isViewOnceMessage(messageRecord) && !messageRecord.isRemoteDelete()) {
       revealableStub.get().setVisibility(VISIBLE);
       if (mediaThumbnailStub.resolved()) mediaThumbnailStub.get().setVisibility(View.GONE);
       if (audioViewStub.resolved())      audioViewStub.get().setVisibility(View.GONE);
@@ -725,10 +745,14 @@ public class ConversationItem extends LinearLayout implements BindableConversati
       if (revealableStub.resolved())     revealableStub.get().setVisibility(View.GONE);
 
       //noinspection ConstantConditions
-      audioViewStub.get().setAudio(((MediaMmsMessageRecord) messageRecord).getSlideDeck().getAudioSlide(), showControls);
+      audioViewStub.get().setAudio(((MediaMmsMessageRecord) messageRecord).getSlideDeck().getAudioSlide(), new AudioViewCallbacks(), showControls);
       audioViewStub.get().setDownloadClickListener(singleDownloadClickListener);
       audioViewStub.get().setOnLongClickListener(passthroughClickListener);
 
+      if (eventListener != null) {
+        eventListener.onRegisterVoiceNoteCallbacks(audioViewStub.get().getPlaybackStateObserver());
+      }
+
       ViewUtil.updateLayoutParams(bodyText, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
       ViewUtil.updateLayoutParamsIfNonNull(groupSenderHolder, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
 
@@ -892,12 +916,14 @@ public class ConversationItem extends LinearLayout implements BindableConversati
   }
 
   private void setSharedContactCorners(@NonNull MessageRecord current, @NonNull Optional<MessageRecord> previous, @NonNull Optional<MessageRecord> next, boolean isGroupThread) {
-    if (isSingularMessage(current, previous, next, isGroupThread) || isEndOfMessageCluster(current, next, isGroupThread)) {
-      sharedContactStub.get().setSingularStyle();
-    } else if (current.isOutgoing()) {
-      sharedContactStub.get().setClusteredOutgoingStyle();
-    } else {
-      sharedContactStub.get().setClusteredIncomingStyle();
+    if (TextUtils.isEmpty(messageRecord.getDisplayBody(getContext()))){
+      if (isSingularMessage(current, previous, next, isGroupThread) || isEndOfMessageCluster(current, next, isGroupThread)) {
+          sharedContactStub.get().setSingularStyle();
+      } else if (current.isOutgoing()) {
+          sharedContactStub.get().setClusteredOutgoingStyle();
+      } else {
+          sharedContactStub.get().setClusteredIncomingStyle();
+      }
     }
   }
 
@@ -1075,7 +1101,7 @@ public class ConversationItem extends LinearLayout implements BindableConversati
   private ConversationItemFooter getActiveFooter(@NonNull MessageRecord messageRecord) {
     if (hasSticker(messageRecord) || isBorderless(messageRecord)) {
       return stickerFooter;
-    } else if (hasSharedContact(messageRecord)) {
+    } else if (hasSharedContact(messageRecord) && TextUtils.isEmpty(messageRecord.getDisplayBody(getContext()))) {
       return sharedContactStub.get().getFooter();
     } else if (hasOnlyThumbnail(messageRecord) && TextUtils.isEmpty(messageRecord.getDisplayBody(getContext()))) {
       return mediaThumbnailStub.get().getFooter();
@@ -1442,7 +1468,7 @@ public class ConversationItem extends LinearLayout implements BindableConversati
         Log.i(TAG, "Public URI: " + publicUri);
         Intent intent = new Intent(Intent.ACTION_VIEW);
         intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
-        intent.setDataAndType(PartAuthority.getAttachmentPublicUri(slide.getUri()), slide.getContentType());
+        intent.setDataAndType(PartAuthority.getAttachmentPublicUri(slide.getUri()), Intent.normalizeMimeType(slide.getContentType()));
         try {
           context.startActivity(intent);
         } catch (ActivityNotFoundException anfe) {
@@ -1509,7 +1535,7 @@ public class ConversationItem extends LinearLayout implements BindableConversati
 
     @Override
     public void onClick(@NonNull View widget) {
-      if (eventListener != null && !Recipient.resolved(mentionedRecipientId).isLocalNumber()) {
+      if (eventListener != null && batchSelected.isEmpty()) {
         VibrateUtil.vibrateTick(context);
         eventListener.onGroupMemberClicked(mentionedRecipientId, conversationRecipient.get().requireGroupId());
       }
@@ -1519,6 +1545,35 @@ public class ConversationItem extends LinearLayout implements BindableConversati
     public void updateDrawState(@NonNull TextPaint ds) { }
   }
 
+  private final class AudioViewCallbacks implements AudioView.Callbacks {
+
+    @Override
+    public void onPlay(@NonNull Uri audioUri, double progress) {
+      if (eventListener == null) return;
+
+      eventListener.onVoiceNotePlay(audioUri, messageRecord.getId(), progress);
+    }
+
+    @Override
+    public void onPause(@NonNull Uri audioUri) {
+      if (eventListener == null) return;
+
+      eventListener.onVoiceNotePause(audioUri);
+    }
+
+    @Override
+    public void onSeekTo(@NonNull Uri audioUri, double progress) {
+      if (eventListener == null) return;
+
+      eventListener.onVoiceNoteSeekTo(audioUri, progress);
+    }
+
+    @Override
+    public void onStopAndReset(@NonNull Uri audioUri) {
+      throw new UnsupportedOperationException();
+    }
+  }
+
   private void handleMessageApproval() {
     final int title;
     final int message;

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationReactionOverlay.java

@@ -5,9 +5,7 @@ import android.animation.AnimatorSet;
 import android.app.Activity;
 import android.content.Context;
 import android.graphics.PointF;
-import android.graphics.PorterDuff;
 import android.graphics.Rect;
-import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.util.AttributeSet;
 import android.view.HapticFeedbackConstants;
@@ -24,7 +22,6 @@ import androidx.annotation.Nullable;
 import androidx.appcompat.widget.Toolbar;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.constraintlayout.widget.ConstraintSet;
-import androidx.core.content.ContextCompat;
 import androidx.vectordrawable.graphics.drawable.AnimatorInflaterCompat;
 
 import com.annimon.stream.Stream;
@@ -60,6 +57,7 @@ public final class ConversationReactionOverlay extends RelativeLayout {
   private final PointF   lastSeenDownPoint       = new PointF();
 
   private Activity      activity;
+  private Recipient     conversationRecipient;
   private MessageRecord messageRecord;
   private OverlayState  overlayState = OverlayState.HIDDEN;
 
@@ -145,15 +143,21 @@ public final class ConversationReactionOverlay extends RelativeLayout {
     maskView.setTargetParentTranslationY(translationY);
   }
 
-  public void show(@NonNull Activity activity, @NonNull View maskTarget, @NonNull MessageRecord messageRecord, int maskPaddingBottom) {
+  public void show(@NonNull Activity activity,
+                   @NonNull View maskTarget,
+                   @NonNull Recipient conversationRecipient,
+                   @NonNull MessageRecord messageRecord,
+                   int maskPaddingBottom)
+  {
 
     if (overlayState != OverlayState.HIDDEN) {
       return;
     }
 
-    this.messageRecord = messageRecord;
-    overlayState       = OverlayState.UNINITAILIZED;
-    selected           = -1;
+    this.messageRecord         = messageRecord;
+    this.conversationRecipient = conversationRecipient;
+    overlayState               = OverlayState.UNINITAILIZED;
+    selected                   = -1;
 
     setupToolbarMenuItems();
     setupSelectedEmoji();
@@ -498,7 +502,7 @@ public final class ConversationReactionOverlay extends RelativeLayout {
   }
 
   private void setupToolbarMenuItems() {
-    MenuState menuState = MenuState.getMenuState(Collections.singleton(messageRecord), false);
+    MenuState menuState = MenuState.getMenuState(conversationRecipient, Collections.singleton(messageRecord), false);
 
     toolbar.getMenu().findItem(R.id.action_copy).setVisible(menuState.shouldShowCopyAction());
     toolbar.getMenu().findItem(R.id.action_download).setVisible(menuState.shouldShowSaveAttachmentAction());

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationUpdateItem.java

@@ -14,6 +14,7 @@ import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.content.ContextCompat;
+import androidx.lifecycle.LifecycleOwner;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.Transformations;
@@ -29,13 +30,12 @@ import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.mms.GlideRequests;
 import org.thoughtcrime.securesms.recipients.LiveRecipient;
 import org.thoughtcrime.securesms.recipients.Recipient;
-import org.thoughtcrime.securesms.recipients.RecipientForeverObserver;
 import org.thoughtcrime.securesms.util.DateUtils;
-import org.thoughtcrime.securesms.util.Debouncer;
 import org.thoughtcrime.securesms.util.ExpirationUtil;
 import org.thoughtcrime.securesms.util.IdentityUtil;
 import org.thoughtcrime.securesms.util.ThemeUtil;
 import org.thoughtcrime.securesms.util.concurrent.ListenableFuture;
+import org.thoughtcrime.securesms.util.livedata.LiveDataUtil;
 import org.whispersystems.libsignal.util.guava.Optional;
 
 import java.util.Locale;
@@ -44,9 +44,7 @@ import java.util.Set;
 import java.util.concurrent.ExecutionException;
 
 public final class ConversationUpdateItem extends LinearLayout
-                                          implements RecipientForeverObserver,
-                                                     BindableConversationItem,
-                                                     Observer<SpannableString>
+                                          implements BindableConversationItem
 {
   private static final String TAG = ConversationUpdateItem.class.getSimpleName();
 
@@ -62,7 +60,8 @@ public final class ConversationUpdateItem extends LinearLayout
   private Locale                    locale;
   private LiveData<SpannableString> displayBody;
 
-  private final Debouncer bodyClearDebouncer = new Debouncer(150);
+  private final UpdateObserver updateObserver = new UpdateObserver();
+  private final SenderObserver senderObserver = new SenderObserver();
 
   public ConversationUpdateItem(Context context) {
     super(context);
@@ -85,7 +84,8 @@ public final class ConversationUpdateItem extends LinearLayout
   }
 
   @Override
-  public void bind(@NonNull ConversationMessage conversationMessage,
+  public void bind(@NonNull LifecycleOwner lifecycleOwner,
+                   @NonNull ConversationMessage conversationMessage,
                    @NonNull Optional<MessageRecord> previousMessageRecord,
                    @NonNull Optional<MessageRecord> nextMessageRecord,
                    @NonNull GlideRequests glideRequests,
@@ -97,13 +97,7 @@ public final class ConversationUpdateItem extends LinearLayout
   {
     this.batchSelected = batchSelected;
 
-    bind(conversationMessage, locale);
-  }
-
-  @Override
-  protected void onDetachedFromWindow() {
-    unbind();
-    super.onDetachedFromWindow();
+    bind(lifecycleOwner, conversationMessage, locale);
   }
 
   @Override
@@ -116,49 +110,66 @@ public final class ConversationUpdateItem extends LinearLayout
     return conversationMessage;
   }
 
-  private void bind(@NonNull ConversationMessage conversationMessage, @NonNull Locale locale) {
-    if (this.sender != null) {
-      this.sender.removeForeverObserver(this);
-    }
-
-    observeDisplayBody(null);
-    setBodyText(null);
-
+  private void bind(@NonNull LifecycleOwner lifecycleOwner, @NonNull ConversationMessage conversationMessage, @NonNull Locale locale) {
     this.conversationMessage = conversationMessage;
     this.messageRecord       = conversationMessage.getMessageRecord();
-    this.sender              = messageRecord.getIndividualRecipient().live();
     this.locale              = locale;
 
-    this.sender.observeForever(this);
+    observeSender(lifecycleOwner, messageRecord.getIndividualRecipient());
 
     UpdateDescription         updateDescription      = Objects.requireNonNull(messageRecord.getUpdateDisplayBody(getContext()));
     LiveData<String>          liveUpdateMessage      = LiveUpdateMessage.fromMessageDescription(updateDescription);
-    LiveData<SpannableString> spannableStringMessage = Transformations.map(liveUpdateMessage, SpannableString::new);
+    LiveData<SpannableString> spannableStringMessage = toSpannable(loading(liveUpdateMessage));
 
     present(conversationMessage);
 
-    observeDisplayBody(spannableStringMessage);
+    observeDisplayBody(lifecycleOwner, spannableStringMessage);
   }
 
-  private void observeDisplayBody(@Nullable LiveData<SpannableString> displayBody) {
+  /** After a short delay, if the main data hasn't shown yet, then a loading message is displayed. */
+  private @NonNull LiveData<String> loading(@NonNull LiveData<String> string) {
+    return LiveDataUtil.until(string, LiveDataUtil.delay(250, getContext().getString(R.string.ConversationUpdateItem_loading)));
+  }
+
+  private static LiveData<SpannableString> toSpannable(LiveData<String> loading) {
+    return Transformations.map(loading, source -> source == null ? null : new SpannableString(source));
+  }
+
+  @Override
+  public void unbind() {
+  }
+
+  private void observeSender(@NonNull LifecycleOwner lifecycleOwner, @Nullable Recipient recipient) {
+    if (sender != null) {
+      sender.getLiveData().removeObserver(senderObserver);
+    }
+
+    if (recipient != null) {
+      sender = recipient.live();
+      sender.getLiveData().observe(lifecycleOwner, senderObserver);
+    } else {
+      sender = null;
+    }
+  }
+
+  private void observeDisplayBody(@NonNull LifecycleOwner lifecycleOwner, @Nullable LiveData<SpannableString> displayBody) {
     if (this.displayBody != displayBody) {
       if (this.displayBody != null) {
-        this.displayBody.removeObserver(this);
+        this.displayBody.removeObserver(updateObserver);
       }
 
       this.displayBody = displayBody;
 
       if (this.displayBody != null) {
-        this.displayBody.observeForever(this);
+        this.displayBody.observe(lifecycleOwner, updateObserver);
       }
     }
   }
 
   private void setBodyText(@Nullable CharSequence text) {
     if (text == null) {
-      bodyClearDebouncer.publish(() -> body.setText(null));
+      body.setVisibility(INVISIBLE);
     } else {
-      bodyClearDebouncer.clear();
       body.setText(text);
       body.setVisibility(VISIBLE);
     }
@@ -186,7 +197,7 @@ public final class ConversationUpdateItem extends LinearLayout
     else if (messageRecord.isOutgoingCall()) icon.setImageResource(R.drawable.ic_call_made_grey600_24dp);
     else                                     icon.setImageResource(R.drawable.ic_call_missed_grey600_24dp);
 
-    date.setText(DateUtils.getExtendedRelativeTimeSpanString(getContext(), locale, messageRecord.getDateReceived()));
+    date.setText(DateUtils.getExtendedRelativeTimeSpanString(getContext(), locale, messageRecord.getDateSent()));
 
     title.setVisibility(GONE);
     date.setVisibility(View.VISIBLE);
@@ -257,28 +268,25 @@ public final class ConversationUpdateItem extends LinearLayout
     icon.setColorFilter(getIconTintFilter());
   }
 
-  @Override
-  public void onRecipientChanged(@NonNull Recipient recipient) {
-    present(conversationMessage);
-  }
-
   @Override
   public void setOnClickListener(View.OnClickListener l) {
     super.setOnClickListener(new InternalClickListener(l));
   }
 
-  @Override
-  public void unbind() {
-    if (sender != null) {
-      sender.removeForeverObserver(this);
-    }
+  private final class SenderObserver implements Observer<Recipient> {
 
-    observeDisplayBody(null);
+    @Override
+    public void onChanged(Recipient recipient) {
+      present(conversationMessage);
+    }
   }
 
-  @Override
-  public void onChanged(SpannableString update) {
-    setBodyText(update);
+  private final class UpdateObserver implements Observer<SpannableString> {
+
+    @Override
+    public void onChanged(SpannableString update) {
+      setBodyText(update);
+    }
   }
 
   private class InternalClickListener implements View.OnClickListener {

app/src/main/java/org/thoughtcrime/securesms/conversation/MenuState.java

@@ -5,6 +5,7 @@ import androidx.annotation.NonNull;
 import org.thoughtcrime.securesms.database.model.MediaMmsMessageRecord;
 import org.thoughtcrime.securesms.database.model.MessageRecord;
 import org.thoughtcrime.securesms.database.model.MmsMessageRecord;
+import org.thoughtcrime.securesms.recipients.Recipient;
 
 import java.util.Set;
 
@@ -50,7 +51,8 @@ final class MenuState {
     return copy;
   }
 
-  static MenuState getMenuState(@NonNull Set<MessageRecord> messageRecords,
+  static MenuState getMenuState(@NonNull Recipient conversationRecipient,
+                                @NonNull Set<MessageRecord> messageRecords,
                                 boolean shouldShowMessageRequest)
   {
     
@@ -102,20 +104,21 @@ final class MenuState {
                                              ((MediaMmsMessageRecord)messageRecord).getSlideDeck().getStickerSlide() == null)
              .shouldShowForwardAction(!actionMessage && !sharedContact && !viewOnce && !remoteDelete)
              .shouldShowDetailsAction(!actionMessage)
-             .shouldShowReplyAction(canReplyToMessage(actionMessage, messageRecord, shouldShowMessageRequest));
+             .shouldShowReplyAction(canReplyToMessage(conversationRecipient, actionMessage, messageRecord, shouldShowMessageRequest));
     }
 
     return builder.shouldShowCopyAction(!actionMessage && !remoteDelete && hasText)
                   .build();
   }
 
-  static boolean canReplyToMessage(boolean actionMessage, @NonNull MessageRecord messageRecord, boolean isDisplayingMessageRequest) {
-    return !actionMessage                  &&
-           !messageRecord.isRemoteDelete() &&
-           !messageRecord.isPending()      &&
-           !messageRecord.isFailed()       &&
-           !isDisplayingMessageRequest     &&
-           messageRecord.isSecure()        &&
+  static boolean canReplyToMessage(@NonNull Recipient conversationRecipient, boolean actionMessage, @NonNull MessageRecord messageRecord, boolean isDisplayingMessageRequest) {
+    return !actionMessage                                                              &&
+           !messageRecord.isRemoteDelete()                                             &&
+           !messageRecord.isPending()                                                  &&
+           !messageRecord.isFailed()                                                   &&
+           !isDisplayingMessageRequest                                                 &&
+           messageRecord.isSecure()                                                    &&
+           (!conversationRecipient.isGroup() || conversationRecipient.isActiveGroup()) &&
            !messageRecord.getRecipient().isBlocked();
   }
 

app/src/main/java/org/thoughtcrime/securesms/conversation/ui/mentions/MentionViewHolder.java

@@ -1,48 +0,0 @@
-package org.thoughtcrime.securesms.conversation.ui.mentions;
-
-import android.view.View;
-import android.widget.TextView;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import org.thoughtcrime.securesms.R;
-import org.thoughtcrime.securesms.components.AvatarImageView;
-import org.thoughtcrime.securesms.recipients.Recipient;
-import org.thoughtcrime.securesms.util.MappingAdapter;
-import org.thoughtcrime.securesms.util.MappingViewHolder;
-
-public class MentionViewHolder extends MappingViewHolder<MentionViewState> {
-
-  private final AvatarImageView avatar;
-  private final TextView        name;
-
-  @Nullable private final MentionEventsListener mentionEventsListener;
-
-  public MentionViewHolder(@NonNull View itemView, @Nullable MentionEventsListener mentionEventsListener) {
-    super(itemView);
-    this.mentionEventsListener = mentionEventsListener;
-
-    avatar   = findViewById(R.id.mention_recipient_avatar);
-    name     = findViewById(R.id.mention_recipient_name);
-  }
-
-  @Override
-  public void bind(@NonNull MentionViewState model) {
-    avatar.setRecipient(model.getRecipient());
-    name.setText(model.getName(context));
-    itemView.setOnClickListener(v -> {
-      if (mentionEventsListener != null) {
-        mentionEventsListener.onMentionClicked(model.getRecipient());
-      }
-    });
-  }
-
-  public interface MentionEventsListener {
-    void onMentionClicked(@NonNull Recipient recipient);
-  }
-
-  public static MappingAdapter.Factory<MentionViewState> createFactory(@Nullable MentionEventsListener mentionEventsListener) {
-    return new MappingAdapter.LayoutFactory<>(view -> new MentionViewHolder(view, mentionEventsListener), R.layout.mentions_picker_recipient_list_item);
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/conversation/ui/mentions/MentionViewState.java

@@ -1,17 +1,11 @@
 package org.thoughtcrime.securesms.conversation.ui.mentions;
 
-import android.content.Context;
-
 import androidx.annotation.NonNull;
 
-import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.recipients.Recipient;
-import org.thoughtcrime.securesms.util.MappingModel;
-import org.thoughtcrime.securesms.util.Util;
+import org.thoughtcrime.securesms.util.viewholders.RecipientMappingModel;
 
-import java.util.Objects;
-
-public final class MentionViewState implements MappingModel<MentionViewState> {
+public final class MentionViewState extends RecipientMappingModel<MentionViewState> {
 
   private final Recipient recipient;
 
@@ -19,23 +13,8 @@ public final class MentionViewState implements MappingModel<MentionViewState> {
     this.recipient = recipient;
   }
 
-  @NonNull String getName(@NonNull Context context) {
-    return recipient.getDisplayName(context);
-  }
-
-  @NonNull Recipient getRecipient() {
+  @Override
+  public @NonNull Recipient getRecipient() {
     return recipient;
   }
-
-  @Override
-  public boolean areItemsTheSame(@NonNull MentionViewState newItem) {
-    return recipient.getId().equals(newItem.recipient.getId());
-  }
-
-  @Override
-  public boolean areContentsTheSame(@NonNull MentionViewState newItem) {
-    Context context = ApplicationDependencies.getApplication();
-    return recipient.getDisplayName(context).equals(newItem.recipient.getDisplayName(context)) &&
-           Objects.equals(recipient.getProfileAvatar(), newItem.recipient.getProfileAvatar());
-  }
 }

app/src/main/java/org/thoughtcrime/securesms/conversation/ui/mentions/MentionsPickerAdapter.java

@@ -3,18 +3,20 @@ package org.thoughtcrime.securesms.conversation.ui.mentions;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-import org.thoughtcrime.securesms.conversation.ui.mentions.MentionViewHolder.MentionEventsListener;
+import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.util.MappingAdapter;
 import org.thoughtcrime.securesms.util.MappingModel;
+import org.thoughtcrime.securesms.util.viewholders.RecipientViewHolder;
+import org.thoughtcrime.securesms.util.viewholders.RecipientViewHolder.EventListener;
 
 import java.util.List;
 
 public class MentionsPickerAdapter extends MappingAdapter {
   private final Runnable currentListChangedListener;
 
-  public MentionsPickerAdapter(@Nullable MentionEventsListener mentionEventsListener, @NonNull Runnable currentListChangedListener) {
+  public MentionsPickerAdapter(@Nullable EventListener<MentionViewState> listener, @NonNull Runnable currentListChangedListener) {
     this.currentListChangedListener = currentListChangedListener;
-    registerFactory(MentionViewState.class, MentionViewHolder.createFactory(mentionEventsListener));
+    registerFactory(MentionViewState.class, RecipientViewHolder.createFactory(R.layout.mentions_picker_recipient_list_item, listener));
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/conversation/ui/mentions/MentionsPickerFragment.java

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.conversation.ui.mentions;
 
 import android.os.Bundle;
+import android.os.Handler;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -24,12 +25,14 @@ import java.util.List;
 
 public class MentionsPickerFragment extends LoggingFragment {
 
-  private MentionsPickerAdapter     adapter;
-  private RecyclerView              list;
-  private View                      topDivider;
-  private View                      bottomDivider;
-  private BottomSheetBehavior<View> behavior;
-  private MentionsPickerViewModel   viewModel;
+  private       MentionsPickerAdapter     adapter;
+  private       RecyclerView              list;
+  private       View                      topDivider;
+  private       View                      bottomDivider;
+  private       BottomSheetBehavior<View> behavior;
+  private       MentionsPickerViewModel   viewModel;
+  private final Runnable                  lockSheetAfterListUpdate = () -> behavior.setHideable(false);
+  private final Handler                   handler                  = new Handler();
 
   @Override
   public @Nullable View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
@@ -62,6 +65,7 @@ public class MentionsPickerFragment extends LoggingFragment {
   }
 
   private void initializeBehavior() {
+    behavior.setHideable(true);
     behavior.setState(BottomSheetBehavior.STATE_HIDDEN);
 
     behavior.addBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
@@ -69,6 +73,7 @@ public class MentionsPickerFragment extends LoggingFragment {
       public void onStateChanged(@NonNull View bottomSheet, int newState) {
         if (newState == BottomSheetBehavior.STATE_HIDDEN) {
           adapter.submitList(Collections.emptyList());
+          showDividers(false);
         } else {
           showDividers(true);
         }
@@ -109,9 +114,10 @@ public class MentionsPickerFragment extends LoggingFragment {
     if (isShowing) {
       list.scrollToPosition(0);
       behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
-      list.post(() -> behavior.setHideable(false));
+      handler.post(lockSheetAfterListUpdate);
       showDividers(true);
     } else {
+      handler.removeCallbacks(lockSheetAfterListUpdate);
       behavior.setHideable(true);
       behavior.setState(BottomSheetBehavior.STATE_HIDDEN);
     }

app/src/main/java/org/thoughtcrime/securesms/conversation/ui/mentions/MentionsPickerViewModel.java

@@ -12,8 +12,6 @@ import com.annimon.stream.Stream;
 
 import org.thoughtcrime.securesms.conversation.ui.mentions.MentionsPickerRepository.MentionQuery;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
-import org.thoughtcrime.securesms.megaphone.MegaphoneRepository;
-import org.thoughtcrime.securesms.megaphone.Megaphones;
 import org.thoughtcrime.securesms.recipients.LiveRecipient;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
@@ -31,12 +29,8 @@ public class MentionsPickerViewModel extends ViewModel {
   private final MutableLiveData<LiveRecipient>  liveRecipient;
   private final MutableLiveData<Query>          liveQuery;
   private final MutableLiveData<Boolean>        isShowing;
-  private final MegaphoneRepository             megaphoneRepository;
 
-  MentionsPickerViewModel(@NonNull MentionsPickerRepository mentionsPickerRepository,
-                          @NonNull MegaphoneRepository megaphoneRepository)
-  {
-    this.megaphoneRepository = megaphoneRepository;
+  MentionsPickerViewModel(@NonNull MentionsPickerRepository mentionsPickerRepository) {
     this.liveRecipient       = new MutableLiveData<>();
     this.liveQuery           = new MutableLiveData<>();
     this.selectedRecipient   = new SingleLiveEvent<>();
@@ -44,8 +38,8 @@ public class MentionsPickerViewModel extends ViewModel {
 
     LiveData<Recipient>         recipient    = Transformations.switchMap(liveRecipient, LiveRecipient::getLiveData);
     LiveData<List<RecipientId>> fullMembers  = Transformations.distinctUntilChanged(LiveDataUtil.mapAsync(recipient, mentionsPickerRepository::getMembers));
-    LiveData<Query>             query        = Transformations.distinctUntilChanged(liveQuery);
-    LiveData<MentionQuery>      mentionQuery = LiveDataUtil.combineLatest(query, fullMembers, (q, m) -> new MentionQuery(q.query, m));
+
+    LiveData<MentionQuery>      mentionQuery = LiveDataUtil.combineLatest(liveQuery, fullMembers, (q, m) -> new MentionQuery(q.query, m));
 
     this.mentionList = LiveDataUtil.mapAsync(mentionQuery, q -> Stream.of(mentionsPickerRepository.search(q)).<MappingModel<?>>map(MentionViewState::new).toList());
   }
@@ -56,7 +50,6 @@ public class MentionsPickerViewModel extends ViewModel {
 
   void onSelectionChange(@NonNull Recipient recipient) {
     selectedRecipient.setValue(recipient);
-    megaphoneRepository.markFinished(Megaphones.Event.MENTIONS);
   }
 
   void setIsShowing(boolean isShowing) {
@@ -119,8 +112,7 @@ public class MentionsPickerViewModel extends ViewModel {
     @Override
     public @NonNull <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
       //noinspection ConstantConditions
-      return modelClass.cast(new MentionsPickerViewModel(new MentionsPickerRepository(ApplicationDependencies.getApplication()),
-                                                         ApplicationDependencies.getMegaphoneRepository()));
+      return modelClass.cast(new MentionsPickerViewModel(new MentionsPickerRepository(ApplicationDependencies.getApplication())));
     }
   }
 }