fix: add back button to chatOverviewScreen when onExit is not null

Author: JacquesDIconica

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## 6.0.1
 - Added proper implementation for getAllUsersForChat in Firebase repository
 - Removed cast which throws an error in ChatProfileScreen
+- Added BackButton to ChatOverviewScreen when onExit is not null
 
 ## 6.0.0
 - Added pending message repository to temporarily store messages that are not yet received by the backend

packages/flutter_chat/lib/src/flutter_chat_navigator_userstories.dart

@@ -78,6 +78,8 @@ abstract class _BaseChatNavigatorUserstory extends HookWidget {
   final ChatOptions options;
 
   /// Callback for when the user wants to navigate back.
+  ///
+  /// This will also show the back button in the appbar when not null
   final VoidCallback? onExit;
 
   /// Implemented by subclasses to provide the initial route of the userstory.
@@ -108,7 +110,7 @@ abstract class _BaseChatNavigatorUserstory extends HookWidget {
       service: service,
       popHandler: popHandler,
       child: NavigatorPopHandler(
-        onPop: () => popHandler.handlePop(),
+        onPop: popHandler.handlePop,
         child: Navigator(
           key: nestedNavigatorKey,
           onGenerateInitialRoutes: (_, __) => [

packages/flutter_chat/lib/src/screens/chat_screen.dart

@@ -46,7 +46,7 @@ class ChatScreen extends HookWidget {
 
     if (options.builders.baseScreenBuilder == null) {
       return Scaffold(
-        appBar: const _AppBar(),
+        appBar: _AppBar(onExit),
         body: _Body(
           onPressChat: onPressChat,
           onPressStartChat: onPressStartChat,
@@ -58,7 +58,7 @@ class ChatScreen extends HookWidget {
     return options.builders.baseScreenBuilder!.call(
       context,
       mapScreenType,
-      const _AppBar(),
+      _AppBar(onExit),
       translations.chatsTitle,
       _Body(
         onPressChat: onPressChat,
@@ -70,7 +70,9 @@ class ChatScreen extends HookWidget {
 }
 
 class _AppBar extends StatelessWidget implements PreferredSizeWidget {
-  const _AppBar();
+  const _AppBar(this.onExit);
+
+  final VoidCallback? onExit;
 
   @override
   Widget build(BuildContext context) {
@@ -81,6 +83,11 @@ class _AppBar extends StatelessWidget implements PreferredSizeWidget {
     var theme = Theme.of(context);
 
     return AppBar(
+      leading: onExit != null
+          ? BackButton(
+              onPressed: () => onExit?.call(),
+            )
+          : null,
       title: Text(
         translations.chatsTitle,
       ),