feat(player): 评论发布成功提示

lib/pages/player/widgets/comment_composer_sheet.dart

@@ -129,6 +129,7 @@ class _CommentComposerSheetState extends State<CommentComposerSheet>
     );
     if (!mounted) return;
     if (result.isSuccess) {
+      _input.clear();
       _closing = true;
       Navigator.pop(context, true);
       return;

lib/pages/player/widgets/drama_comments_sheet.dart

@@ -41,6 +41,7 @@ class DramaCommentsSheet extends StatefulWidget {
 class _DramaCommentsSheetState extends State<DramaCommentsSheet> {
   late final CommentRepository _comments;
   late final CommentController _controller;
+  final _messengerKey = GlobalKey<ScaffoldMessengerState>();
   int? _serverCount;
   int _countRequest = 0;
 
@@ -91,65 +92,110 @@ class _DramaCommentsSheetState extends State<DramaCommentsSheet> {
       builder: (_) =>
           CommentComposerSheet(controller: _controller, replyTo: replyTo),
     );
-    if (published == true && mounted) await _refreshCount();
+    if (published == true && mounted) {
+      _showPostSuccess();
+      await _refreshCount();
+    }
   }
 
   void _handleDismissLayerTap() {
     Navigator.pop(context);
   }
 
-  @override
-  Widget build(BuildContext context) {
+  void _showPostSuccess() {
+    final messenger = _messengerKey.currentState;
+    if (messenger == null) return;
+    final l10n = AppLocalizations.of(context)!;
+    messenger
+      ..hideCurrentSnackBar()
+      ..showSnackBar(
+        SnackBar(
+          key: const Key('comment-post-success-snackbar'),
+          content: Text(
+            l10n.commentPostSuccess,
+            style: const TextStyle(
+              color: Colors.white,
+              fontSize: 14,
+              fontWeight: FontWeight.w500,
+            ),
+          ),
+          behavior: SnackBarBehavior.floating,
+          duration: const Duration(milliseconds: 1500),
+          backgroundColor: AppColors.ink,
+          elevation: 6,
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(10),
+          ),
+          margin: EdgeInsets.fromLTRB(16, 0, 16, _sheetHeight(context) + 12),
+        ),
+      );
+  }
+
+  double _sheetHeight(BuildContext context) {
     final screenHeight = MediaQuery.sizeOf(context).height;
     final topSafeArea = MediaQuery.paddingOf(context).top;
     final halfHeight = (screenHeight * 0.5).roundToDouble();
     final maxHeight = math.max(0.0, screenHeight - topSafeArea);
-    final sheetHeight = math.min(halfHeight, maxHeight);
-    return Stack(
-      fit: StackFit.expand,
-      children: [
-        Positioned.fill(
-          child: GestureDetector(
-            key: const Key('player-comments-dismiss-layer'),
-            behavior: HitTestBehavior.opaque,
-            onTap: _handleDismissLayerTap,
-          ),
-        ),
-        Align(
-          alignment: Alignment.bottomCenter,
-          child: GestureDetector(
-            behavior: HitTestBehavior.opaque,
-            onTap: () {},
-            child: KeyedSubtree(
-              key: const Key('player-comments-sheet'),
-              child: SizedBox(
-                key: const Key('comment-sheet-constraints'),
-                height: sheetHeight,
-                child: Container(
-                  decoration: const BoxDecoration(
-                    color: AppColors.card,
-                    borderRadius: BorderRadius.vertical(
-                      top: Radius.circular(_sheetRadius),
-                    ),
-                  ),
-                  child: SafeArea(
-                    top: false,
-                    child: ListenableBuilder(
-                      listenable: _controller,
-                      builder: (context, _) {
-                        return Padding(
-                          padding: const EdgeInsets.symmetric(horizontal: 16),
-                          child: _content(context),
-                        );
-                      },
+    return math.min(halfHeight, maxHeight);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final sheetHeight = _sheetHeight(context);
+    return ScaffoldMessenger(
+      key: _messengerKey,
+      child: Scaffold(
+        backgroundColor: Colors.transparent,
+        resizeToAvoidBottomInset: false,
+        body: Stack(
+          fit: StackFit.expand,
+          children: [
+            Positioned.fill(
+              child: GestureDetector(
+                key: const Key('player-comments-dismiss-layer'),
+                behavior: HitTestBehavior.opaque,
+                onTap: _handleDismissLayerTap,
+              ),
+            ),
+            Align(
+              alignment: Alignment.bottomCenter,
+              child: GestureDetector(
+                behavior: HitTestBehavior.opaque,
+                onTap: () {},
+                child: KeyedSubtree(
+                  key: const Key('player-comments-sheet'),
+                  child: SizedBox(
+                    key: const Key('comment-sheet-constraints'),
+                    height: sheetHeight,
+                    child: Container(
+                      decoration: const BoxDecoration(
+                        color: AppColors.card,
+                        borderRadius: BorderRadius.vertical(
+                          top: Radius.circular(_sheetRadius),
+                        ),
+                      ),
+                      child: SafeArea(
+                        top: false,
+                        child: ListenableBuilder(
+                          listenable: _controller,
+                          builder: (context, _) {
+                            return Padding(
+                              padding: const EdgeInsets.symmetric(
+                                horizontal: 16,
+                              ),
+                              child: _content(context),
+                            );
+                          },
+                        ),
+                      ),
                     ),
                   ),
                 ),
               ),
             ),
-          ),
+          ],
         ),
-      ],
+      ),
     );
   }