Add paneTitle to compose SDK screens for TalkBack pane announcements

paneTitle is the Compose semantic that drives TalkBack's pane-change announcement (TYPE_WINDOW_STATE_CHANGED) when a screen appears via FullscreenDialog, adaptive-layout pane swap, or Compose Navigation route change inside an existing Activity. Without it, TalkBack only announces the host Activity's android:label on entry and stays silent on subsequent in-Activity pane changes.

- AddMembersScreen, GroupChannelEditScreen: announce 'Add Members' / 'Edit' when shown via FullscreenDialog from GroupChannelInfoScreen.
- DirectChannelInfoScreen, GroupChannelInfoScreen, ChannelsScreen, ChatsScreen, ThreadsScreen: announce their title when used as a pane in an adaptive layout or routed-to via Compose Navigation. All reuse existing strings or the screen's existing title parameter; no new public API.

Author: andremion

stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/channel/info/AddMembersScreen.kt

@@ -40,6 +40,8 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.paneTitle
+import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
@@ -101,11 +103,13 @@ internal fun AddMembersScreen(
     onDismiss: () -> Unit,
     onConfirm: () -> Unit,
 ) {
+    val paneTitleText = stringResource(id = R.string.stream_compose_add_members_title)
     Column(
         modifier = Modifier
             .fillMaxSize()
             .background(ChatTheme.colors.backgroundCoreApp)
-            .systemBarsPadding(),
+            .systemBarsPadding()
+            .semantics { paneTitle = paneTitleText },
     ) {
         AddMembersHeader(
             hasSelection = state.selectedUserIds.isNotEmpty(),

stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/channel/info/DirectChannelInfoScreen.kt

@@ -42,6 +42,8 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.paneTitle
+import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -113,8 +115,9 @@ private fun DirectChannelInfoScaffold(
     onViewAction: (action: ChannelInfoViewAction) -> Unit = {},
 ) {
     val listState = rememberLazyListState()
+    val paneTitleText = stringResource(id = UiCommonR.string.stream_ui_channel_info_contact_title)
     Scaffold(
-        modifier = modifier,
+        modifier = modifier.semantics { paneTitle = paneTitleText },
         topBar = {
             ChatTheme.componentFactory.DirectChannelInfoTopBar(
                 params = DirectChannelInfoTopBarParams(

stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/channel/info/GroupChannelEditScreen.kt

@@ -54,6 +54,8 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.paneTitle
+import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.TextRange
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.text.style.TextOverflow
@@ -206,7 +208,9 @@ private fun GroupChannelEditContent(
     onSaveActionClick: () -> Unit = {},
     onUploadPictureClick: () -> Unit = {},
 ) {
+    val paneTitleText = stringResource(id = UiCommonR.string.stream_ui_channel_info_edit_title)
     Scaffold(
+        modifier = Modifier.semantics { paneTitle = paneTitleText },
         topBar = {
             GroupChannelEditTopBar(
                 isBusy = isBusy,

stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/channel/info/GroupChannelInfoScreen.kt

@@ -50,6 +50,8 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.paneTitle
+import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -174,8 +176,9 @@ private fun GroupChannelInfoScaffold(
     onViewAction: (action: ChannelInfoViewAction) -> Unit = {},
 ) {
     val listState = rememberLazyListState()
+    val paneTitleText = stringResource(id = UiCommonR.string.stream_ui_channel_info_group_title)
     Scaffold(
-        modifier = modifier,
+        modifier = modifier.semantics { paneTitle = paneTitleText },
         topBar = {
             ChatTheme.componentFactory.GroupChannelInfoTopBar(
                 params = GroupChannelInfoTopBarParams(

stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/channels/ChannelsScreen.kt

@@ -41,6 +41,8 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.testTag
+import androidx.compose.ui.semantics.paneTitle
+import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import io.getstream.chat.android.compose.state.channels.list.SearchQuery
@@ -123,7 +125,9 @@ public fun ChannelsScreen(
             .testTag("Stream_ChannelsScreen"),
     ) {
         Scaffold(
-            modifier = Modifier.fillMaxSize(),
+            modifier = Modifier
+                .fillMaxSize()
+                .semantics { paneTitle = title },
             topBar = {
                 if (isShowingHeader) {
                     ChatTheme.componentFactory.ChannelListHeader(

stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/chats/ChatsScreen.kt

@@ -44,6 +44,8 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.layout.onSizeChanged
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.semantics.paneTitle
+import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.IntSize
 import androidx.lifecycle.viewmodel.compose.viewModel
@@ -179,10 +181,12 @@ public fun ChatsScreen(
         onDispose { navigator.popUpTo(ThreePaneRole.List) }
     }
 
-    val listPane = remember(listContentMode) {
+    val listPane = remember(listContentMode, title) {
         movableContentOf { modifier: Modifier ->
             Scaffold(
-                modifier = modifier.safeDrawingPadding(),
+                modifier = modifier
+                    .safeDrawingPadding()
+                    .semantics { paneTitle = title },
                 containerColor = ChatTheme.colors.backgroundCoreApp,
                 topBar = { listTopBarContent() },
                 bottomBar = { listBottomBarContent() },

stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/threads/ThreadsScreen.kt

@@ -23,6 +23,8 @@ import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.paneTitle
+import androidx.compose.ui.semantics.semantics
 import androidx.lifecycle.viewmodel.compose.viewModel
 import io.getstream.chat.android.client.api.models.QueryThreadsRequest
 import io.getstream.chat.android.compose.R
@@ -54,7 +56,7 @@ public fun ThreadsScreen(
     val user by listViewModel.user.collectAsState()
     val connectionState by listViewModel.connectionState.collectAsState()
 
-    Column(modifier = Modifier.fillMaxSize()) {
+    Column(modifier = Modifier.fillMaxSize().semantics { paneTitle = title }) {
         ChatTheme.componentFactory.ThreadListHeader(
             params = ThreadListHeaderParams(
                 title = title,