Show conversation settings in the detail pane on large screens.

app/src/main/java/org/thoughtcrime/securesms/components/settings/conversation/ConversationSettingsFragment.kt

@@ -30,6 +30,8 @@ import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import io.reactivex.rxjava3.kotlin.subscribeBy
 import kotlinx.coroutines.launch
+import org.signal.core.ui.getWindowSizeClass
+import org.signal.core.ui.isSplitPane
 import org.signal.core.ui.permissions.Permissions
 import org.signal.core.util.DimensionUnit
 import org.signal.core.util.Result
@@ -117,6 +119,7 @@ import org.thoughtcrime.securesms.util.ExpirationUtil
 import org.thoughtcrime.securesms.util.Material3OnScrollHelper
 import org.thoughtcrime.securesms.util.RemoteConfig
 import org.thoughtcrime.securesms.util.ViewUtil
+import org.thoughtcrime.securesms.util.WindowUtil
 import org.thoughtcrime.securesms.util.adapter.mapping.MappingAdapter
 import org.thoughtcrime.securesms.util.navigation.safeNavigate
 import org.thoughtcrime.securesms.util.views.SimpleProgressDialog
@@ -261,8 +264,25 @@ class ConversationSettingsFragment :
     }
   }
 
+  private fun goToConversationList() {
+    if (mainNavRouter != null) {
+      mainNavRouter?.goTo(MainNavigationDetailLocation.Empty)
+    } else {
+      startActivity(MainActivity.clearTopAndOpenDetail(requireContext(), MainNavigationDetailLocation.Empty))
+    }
+  }
+
   override fun getMaterial3OnScrollHelper(toolbar: Toolbar?): Material3OnScrollHelper {
-    return object : Material3OnScrollHelper(activity = requireActivity(), views = listOf(toolbar!!), lifecycleOwner = viewLifecycleOwner) {
+    return object : Material3OnScrollHelper(
+      activity = requireActivity(),
+      views = listOf(toolbar!!),
+      lifecycleOwner = viewLifecycleOwner,
+      setStatusBarColor = { color ->
+        if (!resources.getWindowSizeClass().isSplitPane() || activity is ConversationSettingsActivity) {
+          WindowUtil.setStatusBarColor(requireActivity().window, color)
+        }
+      }
+    ) {
       override val inactiveColorSet = ColorSet(
         toolbarColorRes = CoreUiR.color.signal_colorBackground_0,
         statusBarColorRes = CoreUiR.color.signal_colorBackground
@@ -972,7 +992,7 @@ class ConversationSettingsFragment :
               icon = DSLSettingsIcon.from(R.drawable.symbol_archive_24),
               onClick = {
                 viewModel.toggleArchive()
-                onToolbarNavigationClicked()
+                goToConversationList()
               }
             )
           }
@@ -986,11 +1006,7 @@ class ConversationSettingsFragment :
               lifecycleScope.launch {
                 viewModel.deleteChat()
                 progressDialog.dismissAllowingStateLoss()
-                if (mainNavRouter != null) {
-                  mainNavRouter?.goTo(MainNavigationDetailLocation.Empty)
-                } else {
-                  startActivity(MainActivity.clearTopAndOpenDetail(requireContext(), MainNavigationDetailLocation.Empty))
-                }
+                goToConversationList()
               }
             }
           )
@@ -1059,7 +1075,7 @@ class ConversationSettingsFragment :
                     .onReportSpam()
                     .subscribeBy {
                       Toast.makeText(requireContext(), R.string.ConversationFragment_reported_as_spam, Toast.LENGTH_SHORT).show()
-                      onToolbarNavigationClicked()
+                      goToConversationList()
                     }
                     .addTo(lifecycleDisposable)
                 },
@@ -1073,7 +1089,7 @@ class ConversationSettingsFragment :
                         when (result) {
                           is Result.Success -> {
                             Toast.makeText(requireContext(), R.string.ConversationFragment_reported_as_spam_and_blocked, Toast.LENGTH_SHORT).show()
-                            onToolbarNavigationClicked()
+                            goToConversationList()
                           }
 
                           is Result.Failure -> {
@@ -1108,7 +1124,7 @@ class ConversationSettingsFragment :
                     .onReportSpam()
                     .subscribeBy {
                       Toast.makeText(requireContext(), R.string.ConversationFragment_reported_as_spam, Toast.LENGTH_SHORT).show()
-                      onToolbarNavigationClicked()
+                      goToConversationList()
                     }
                     .addTo(lifecycleDisposable)
                 },

app/src/main/java/org/thoughtcrime/securesms/components/settings/conversation/ConversationSettingsNavHostFragment.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2026 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.settings.conversation
+
+import android.os.Bundle
+import androidx.core.os.bundleOf
+import androidx.navigation.fragment.NavHostFragment
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.thoughtcrime.securesms.R
+import org.thoughtcrime.securesms.components.settings.DSLSettingsActivity
+import org.thoughtcrime.securesms.recipients.Recipient
+import org.thoughtcrime.securesms.recipients.RecipientId
+
+class ConversationSettingsNavHostFragment : NavHostFragment() {
+
+  companion object {
+    suspend fun createArgs(recipientId: RecipientId): Bundle {
+      val recipient = withContext(Dispatchers.IO) { Recipient.resolved(recipientId) }
+
+      val args = if (recipient.isGroup) {
+        ConversationSettingsFragmentArgs.Builder(null, recipient.requireGroupId(), null)
+      } else {
+        ConversationSettingsFragmentArgs.Builder(recipientId, null, null)
+      }.build()
+
+      return bundleOf(DSLSettingsActivity.ARG_START_BUNDLE to args.toBundle())
+    }
+  }
+
+  override fun onCreate(savedInstanceState: Bundle?) {
+    val args = requireArguments().getBundle(DSLSettingsActivity.ARG_START_BUNDLE)
+    navController.setGraph(R.navigation.conversation_settings, args)
+    super.onCreate(savedInstanceState)
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationFragment.kt

@@ -4129,7 +4129,7 @@ class ConversationFragment :
 
     override fun handleManageGroup() {
       viewModel.recipientSnapshot?.let { recipient ->
-        navigateToConversationSettingsStandalone(recipient)
+        navigateTo(MainNavigationDetailLocation.Chats.ConversationSettings(recipient.id))
       }
     }
 
@@ -4166,7 +4166,7 @@ class ConversationFragment :
     override fun handleConversationSettings() {
       viewModel.recipientSnapshot?.let { recipient ->
         if (!viewModel.hasMessageRequestState || recipient.isBlocked) {
-          navigateToConversationSettingsStandalone(recipient)
+          navigateTo(MainNavigationDetailLocation.Chats.ConversationSettings(recipient.id))
         }
       }
     }
@@ -4235,6 +4235,7 @@ class ConversationFragment :
     } else {
       when (location) {
         is MainNavigationDetailLocation.Chats.MessageDetails -> navigateToMessageDetailsStandalone(location)
+        is MainNavigationDetailLocation.Chats.ConversationSettings -> navigateToConversationSettingsStandalone(viewModel.recipientSnapshot!!)
         is MainNavigationDetailLocation.Chats.Conversation -> error("ConversationFragment shouldn't navigate to another conversation - use the main navigation infrastructure instead.")
       }
     }

app/src/main/java/org/thoughtcrime/securesms/main/ChatsNavHost.kt

@@ -6,6 +6,7 @@
 package org.thoughtcrime.securesms.main
 
 import android.os.Build
+import android.os.Bundle
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateDp
 import androidx.compose.animation.core.animateFloat
@@ -22,6 +23,7 @@ import androidx.compose.runtime.Stable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.key
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.produceState
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
@@ -47,6 +49,7 @@ import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
 import org.signal.core.ui.isSplitPane
 import org.thoughtcrime.securesms.MainNavigator
+import org.thoughtcrime.securesms.components.settings.conversation.ConversationSettingsNavHostFragment
 import org.thoughtcrime.securesms.compose.FragmentBackHandler
 import org.thoughtcrime.securesms.compose.FragmentBackPressedState
 import org.thoughtcrime.securesms.conversation.ConversationArgs
@@ -162,12 +165,44 @@ fun NavGraphBuilder.chatNavGraphBuilder(
       clazz = MessageDetailsFragment::class.java,
       fragmentState = fragmentState,
       arguments = MessageDetailsFragment.args(route.recipientId, route.messageId),
-      modifier = Modifier.fillMaxSize()
+      modifier = Modifier
+        .fillMaxSize()
         .background(MaterialTheme.colorScheme.background)
         .statusBarsPadding()
         .navigationBarsPadding()
     )
   }
+
+  composable<MainNavigationDetailLocation.Chats.ConversationSettings>(
+    typeMap = mapOf(
+      typeOf<RecipientId>() to JsonSerializableNavType(RecipientId.serializer())
+    )
+  ) { navBackStackEntry ->
+
+    val navigatorProvider = LocalContext.current as? MainNavigator.NavigatorProvider
+    val fragmentState = key(route) { rememberFragmentState() }
+    val route = navBackStackEntry.toRoute<MainNavigationDetailLocation.Chats.ConversationSettings>()
+    val arguments: Bundle? by produceState(null, route.recipientId) {
+      value = ConversationSettingsNavHostFragment.createArgs(route.recipientId)
+    }
+
+    LaunchedEffect(Unit) {
+      navigatorProvider?.onFirstRender()
+    }
+
+    arguments?.let { args ->
+      AndroidFragment(
+        clazz = ConversationSettingsNavHostFragment::class.java,
+        fragmentState = fragmentState,
+        arguments = args,
+        modifier = Modifier
+          .fillMaxSize()
+          .background(MaterialTheme.colorScheme.background)
+          .statusBarsPadding()
+          .navigationBarsPadding()
+      )
+    }
+  }
 }
 
 @Composable

app/src/main/java/org/thoughtcrime/securesms/main/MainNavigationDetailLocation.kt

@@ -73,6 +73,13 @@ sealed class MainNavigationDetailLocation : Parcelable {
       @IgnoredOnParcel
       override val controllerKey: RecipientId = recipientId
     }
+
+    @Serializable
+    data class ConversationSettings(val recipientId: RecipientId) : Chats() {
+      @Transient
+      @IgnoredOnParcel
+      override val controllerKey: RecipientId = recipientId
+    }
   }
 
   /**