feat: suporte a tabelas markdown nas legendas, remoção de borda de imagens e separação de comentários no mural

lib/pages/chat/chat.dart

@@ -10,11 +10,14 @@ import 'package:collection/collection.dart';
 import 'package:desktop_drop/desktop_drop.dart';
 import 'package:emoji_picker_flutter/emoji_picker_flutter.dart';
 import 'package:file_picker/file_picker.dart';
+import 'package:html/parser.dart' show parseFragment;
+import 'package:markdown/markdown.dart' show ExtensionSet, markdownToHtml;
 import 'package:tatchat/config/setting_keys.dart';
 import 'package:tatchat/config/themes.dart';
 import 'package:tatchat/l10n/l10n.dart';
 import 'package:tatchat/pages/chat/chat_view.dart';
 import 'package:tatchat/pages/chat/event_info_dialog.dart';
+import 'package:tatchat/pages/chat/edit_media_caption_dialog.dart';
 import 'package:tatchat/pages/chat/start_poll_bottom_sheet.dart';
 import 'package:tatchat/pages/chat/trust_user_key_dialog.dart';
 import 'package:tatchat/pages/chat/utils/web_file_to_x_file.dart';
@@ -1314,6 +1317,16 @@ class ChatController extends State<ChatPageWithRoom>
     final timeline = this.timeline;
     if (timeline == null) return;
 
+    if (const {
+      MessageTypes.Image,
+      MessageTypes.Video,
+      MessageTypes.Audio,
+      MessageTypes.File,
+    }.contains(event.messageType)) {
+      _startEditingMediaCaption(event, clearSelection: clearSelection);
+      return;
+    }
+
     final client = currentRoomBundle.firstWhere(
       (c) => c?.userID == event.senderId,
       orElse: () => null,
@@ -1336,6 +1349,33 @@ class ChatController extends State<ChatPageWithRoom>
     inputFocus.requestFocus();
   }
 
+  Future<void> _startEditingMediaCaption(
+    Event event, {
+    bool clearSelection = false,
+  }) async {
+    final timeline = this.timeline;
+    if (timeline == null) return;
+    if (clearSelection) setState(() => selectedEvents.clear());
+    final caption = event.getDisplayEvent(timeline).body;
+    final result = await showEditMediaCaptionDialog(
+      context,
+      initialCaption: caption,
+    );
+    if (result == null) return;
+    final html = markdownToHtml(
+      result,
+      extensionSet: ExtensionSet.gitHubFlavored,
+    );
+    final content = Map<String, Object?>.of(event.content)
+      ..remove('m.relates_to')
+      ..['body'] = result;
+    if (parseFragment(html).text != result) {
+      content['format'] = 'org.matrix.custom.html';
+      content['formatted_body'] = html;
+    }
+    await room.sendEvent(content, editEventId: event.eventId);
+  }
+
   void editSelectedEventAction() {
     _startEditingEvent(selectedEvents.first, clearSelection: true);
   }