show forward menu item only for relevant events, changes to ui

src/timeline/TimelineModel.cpp

@@ -832,6 +832,17 @@ TimelineModel::forwardMessage(QString eventId, QString roomId)
         emit forwardToRoom(e, roomId, cache::isRoomEncrypted(room_id_.toStdString()));
 }
 
+QString
+TimelineModel::messageContent(QString eventId)
+{
+        auto e = events.get(eventId.toStdString(), "");
+        if (!e)
+                return "";
+
+        auto content = mtx::accessors::body(*e);
+        return QString::fromStdString(content);
+}
+
 void
 TimelineModel::viewDecryptedRawMessage(QString id) const
 {