Implement forwarding messages

lib/components/list_items/chat_list_item.dart

@@ -6,6 +6,7 @@ import 'package:fluffychat/utils/room_name_calculator.dart';
 import 'package:fluffychat/views/chat.dart';
 import 'package:flutter/material.dart';
 import 'package:toast/toast.dart';
+import 'package:pedantic/pedantic.dart';
 
 import '../avatar.dart';
 import '../matrix.dart';
@@ -67,6 +68,10 @@ class ChatListItem extends StatelessWidget {
       }
 
       if (room.membership == Membership.join) {
+        if (Matrix.of(context).shareContent != null) {
+          unawaited(room.sendEvent(Matrix.of(context).shareContent));
+          Matrix.of(context).shareContent = null;
+        }
         await Navigator.pushAndRemoveUntil(
           context,
           AppRoute.defaultRoute(context, Chat(room.id)),

lib/components/list_items/message.dart

@@ -72,6 +72,15 @@ class Message extends StatelessWidget {
       );
     }
 
+    if (!event.redacted) {
+      popupMenuList.add(
+        const PopupMenuItem<String>(
+          value: "forward",
+          child: Text('Forward'),
+        ),
+      );
+    }
+
     if (ownMessage && event.status == -1) {
       popupMenuList.add(
         const PopupMenuItem<String>(
@@ -108,6 +117,10 @@ class Message extends StatelessWidget {
               case "copy":
                 await Clipboard.setData(ClipboardData(text: event.body));
                 break;
+              case "forward":
+                Matrix.of(context).shareContent = event.content;
+                Navigator.of(context).popUntil((r) => r.isFirst);
+                break;
             }
           },
           itemBuilder: (BuildContext context) => popupMenuList,

lib/components/matrix.dart

@@ -42,6 +42,7 @@ class MatrixState extends State<Matrix> {
   FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
   FlutterLocalNotificationsPlugin _flutterLocalNotificationsPlugin =
       FlutterLocalNotificationsPlugin();
+  Map<String, dynamic> shareContent;
 
   String activeRoomId;