Show dialog when group call is full.

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

@@ -61,6 +61,7 @@ import org.signal.core.util.concurrent.LifecycleDisposable;
 import org.signal.core.util.concurrent.SignalExecutors;
 import org.signal.core.util.logging.Log;
 import org.signal.libsignal.protocol.IdentityKey;
+import org.signal.ringrtc.GroupCall;
 import org.thoughtcrime.securesms.components.TooltipPopup;
 import org.thoughtcrime.securesms.components.sensors.Orientation;
 import org.thoughtcrime.securesms.components.webrtc.CallLinkProfileKeySender;
@@ -780,6 +781,13 @@ public class WebRtcCallActivity extends BaseActivity implements SafetyNumberChan
     }
   }
 
+  private void handleGroupCallHasMaxDevices(@NonNull Recipient recipient) {
+    new MaterialAlertDialogBuilder(this)
+        .setMessage(R.string.WebRtcCallView__call_is_full)
+        .setPositiveButton(android.R.string.ok, (d, w) -> handleTerminate(recipient, HangupMessage.Type.NORMAL))
+        .show();
+  }
+
   private void handleTerminate(@NonNull Recipient recipient, @NonNull HangupMessage.Type hangupType) {
     Log.i(TAG, "handleTerminate called: " + hangupType.name());
 
@@ -964,7 +972,13 @@ public class WebRtcCallActivity extends BaseActivity implements SafetyNumberChan
       case CALL_RINGING:
         handleCallRinging(); break;
       case CALL_DISCONNECTED:
-        handleTerminate(event.getRecipient(), HangupMessage.Type.NORMAL); break;
+        if (event.getGroupCallEndReason() == GroupCall.GroupCallEndReason.HAS_MAX_DEVICES) {
+          handleGroupCallHasMaxDevices(event.getRecipient());
+        } else {
+          handleTerminate(event.getRecipient(), HangupMessage.Type.NORMAL);
+        }
+
+        break;
       case CALL_DISCONNECTED_GLARE:
         handleGlare(event.getRecipient()); break;
       case CALL_ACCEPTED_ELSEWHERE:

app/src/main/java/org/thoughtcrime/securesms/events/WebRtcViewModel.kt

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.events
 
 import com.annimon.stream.OptionalLong
+import org.signal.ringrtc.GroupCall.GroupCallEndReason
 import org.thoughtcrime.securesms.components.webrtc.BroadcastVideoSink
 import org.thoughtcrime.securesms.events.CallParticipant.Companion.createLocal
 import org.thoughtcrime.securesms.recipients.Recipient
@@ -104,6 +105,7 @@ class WebRtcViewModel(state: WebRtcServiceState) {
   val pendingParticipants: PendingParticipantCollection = state.callInfoState.pendingParticipants
   val isCallLink: Boolean = state.callInfoState.callRecipient.isCallLink
   val callLinkDisconnectReason: CallLinkDisconnectReason? = state.callInfoState.callLinkDisconnectReason
+  val groupCallEndReason: GroupCallEndReason? = state.callInfoState.groupCallEndReason
 
   @get:JvmName("hasAtLeastOneRemote")
   val hasAtLeastOneRemote = if (state.callInfoState.callRecipient.isIndividual) {

app/src/main/java/org/thoughtcrime/securesms/service/webrtc/GroupActionProcessor.java

@@ -325,6 +325,7 @@ public class GroupActionProcessor extends DeviceAwareActionProcessor {
                                .changeCallInfoState()
                                .callState(WebRtcViewModel.State.CALL_DISCONNECTED)
                                .groupCallState(WebRtcViewModel.GroupCallState.DISCONNECTED)
+                               .setGroupCallEndReason(groupCallEndReason)
                                .build();
 
     webRtcInteractor.postStateUpdate(currentState);

app/src/main/java/org/thoughtcrime/securesms/service/webrtc/state/CallInfoState.kt

@@ -3,6 +3,7 @@ package org.thoughtcrime.securesms.service.webrtc.state
 import com.annimon.stream.OptionalLong
 import org.signal.ringrtc.CallId
 import org.signal.ringrtc.GroupCall
+import org.signal.ringrtc.GroupCall.GroupCallEndReason
 import org.thoughtcrime.securesms.events.CallParticipant
 import org.thoughtcrime.securesms.events.CallParticipantId
 import org.thoughtcrime.securesms.events.WebRtcViewModel
@@ -30,7 +31,8 @@ data class CallInfoState(
   var remoteDevicesCount: OptionalLong = OptionalLong.empty(),
   var participantLimit: Long? = null,
   var pendingParticipants: PendingParticipantCollection = PendingParticipantCollection(),
-  var callLinkDisconnectReason: CallLinkDisconnectReason? = null
+  var callLinkDisconnectReason: CallLinkDisconnectReason? = null,
+  var groupCallEndReason: GroupCallEndReason? = null
 ) {
 
   val remoteCallParticipants: List<CallParticipant>

app/src/main/java/org/thoughtcrime/securesms/service/webrtc/state/WebRtcServiceStateBuilder.java

@@ -369,5 +369,10 @@ public class WebRtcServiceStateBuilder {
       toBuild.setCallLinkDisconnectReason(callLinkDisconnectReason);
       return this;
     }
+
+    public @NonNull CallInfoStateBuilder setGroupCallEndReason(@Nullable GroupCall.GroupCallEndReason groupCallEndReason) {
+      toBuild.setGroupCallEndReason(groupCallEndReason);
+      return this;
+    }
   }
 }