Refactor EventHandler

Refactor EventHandler to be a Q_GADGET and create from a constructor

src/models/messageeventmodel.cpp

@@ -481,9 +481,7 @@ QVariant MessageEventModel::data(const QModelIndex &idx, int role) const
     const auto pendingIt = m_currentRoom->pendingEvents().crbegin() + std::min(row, timelineBaseIndex());
     const auto &evt = isPending ? **pendingIt : **timelineIt;
 
-    EventHandler eventHandler;
-    eventHandler.setRoom(m_currentRoom);
-    eventHandler.setEvent(&evt);
+    EventHandler eventHandler(m_currentRoom, &evt);
 
     if (role == Qt::DisplayRole) {
         if (evt.isRedacted()) {

src/models/notificationsmodel.cpp

@@ -122,9 +122,7 @@ void NotificationsModel::loadData()
                 const auto &authorAvatar = avatar.isValid() && avatar.scheme() == QStringLiteral("mxc") ? avatar : QUrl();
 
                 const auto &roomEvent = eventCast<const RoomEvent>(notification.event.get());
-                EventHandler eventHandler;
-                eventHandler.setRoom(dynamic_cast<NeoChatRoom *>(room));
-                eventHandler.setEvent(roomEvent);
+                EventHandler eventHandler(dynamic_cast<NeoChatRoom *>(room), roomEvent);
                 beginInsertRows({}, m_notifications.length(), m_notifications.length());
                 m_notifications += Notification{
                     .roomId = notification.roomId,

src/models/roomlistmodel.cpp

@@ -348,9 +348,7 @@ QVariant RoomListModel::data(const QModelIndex &index, int role) const
         if (room->lastEvent() == nullptr || room->lastEventIsSpoiler()) {
             return QString();
         }
-        EventHandler eventHandler;
-        eventHandler.setRoom(room);
-        eventHandler.setEvent(room->lastEvent());
+        EventHandler eventHandler(room, room->lastEvent());
         return eventHandler.subtitleText();
     }
     if (role == AvatarImageRole) {

src/models/searchmodel.cpp

@@ -79,9 +79,7 @@ QVariant SearchModel::data(const QModelIndex &index, int role) const
     auto row = index.row();
     const auto &event = *m_result->results[row].result;
 
-    EventHandler eventHandler;
-    eventHandler.setRoom(m_room);
-    eventHandler.setEvent(&event);
+    EventHandler eventHandler(m_room, &event);
 
     switch (role) {
     case DisplayRole: