Create NeochatRoomMember as a shim for RoomMember

The intention is that NeochatRoomMember can be created passed to QML and then be fully managed by it. It effectively just grabs the current RoomMember, calls the correct function then discards it so that we don't end up trying to access an already deleted state event.

src/models/messagecontentmodel.cpp

@@ -3,6 +3,7 @@
 
 #include "messagecontentmodel.h"
 #include "neochatconfig.h"
+#include "neochatroommember.h"
 
 #include <QImageReader>
 
@@ -35,10 +36,10 @@ MessageContentModel::MessageContentModel(NeoChatRoom *room, const Quotient::Room
     , m_room(room)
     , m_eventId(event != nullptr ? event->id() : QString())
     , m_eventSenderId(event != nullptr ? event->senderId() : QString())
-    , m_event(loadEvent<RoomEvent>(event->fullJson()))
     , m_isPending(isPending)
     , m_isReply(isReply)
 {
+    intiializeEvent(event);
     initializeModel();
 }
 
@@ -81,8 +82,7 @@ void MessageContentModel::initializeModel()
             if (m_eventId == serverEvent->id()) {
                 beginResetModel();
                 m_isPending = false;
-                m_event = loadEvent<RoomEvent>(serverEvent->fullJson());
-                Q_EMIT eventUpdated();
+                intiializeEvent(serverEvent);
                 endResetModel();
             }
         }
@@ -91,8 +91,7 @@ void MessageContentModel::initializeModel()
         if (m_room != nullptr && m_event != nullptr) {
             if (m_eventId == newEvent->id()) {
                 beginResetModel();
-                m_event = loadEvent<RoomEvent>(newEvent->fullJson());
-                Q_EMIT eventUpdated();
+                intiializeEvent(newEvent);
                 endResetModel();
             }
         }
@@ -154,6 +153,29 @@ void MessageContentModel::initializeModel()
     resetModel();
 }
 
+void MessageContentModel::intiializeEvent(const QString &eventId)
+{
+    const auto newEvent = m_room->getEvent(eventId);
+    if (newEvent != nullptr) {
+        intiializeEvent(newEvent);
+    }
+}
+
+void MessageContentModel::intiializeEvent(const Quotient::RoomEvent *event)
+{
+    m_event = loadEvent<RoomEvent>(event->fullJson());
+    auto senderId = event->senderId();
+    // A pending event might not have a sender ID set yet but in that case it must
+    // be the local member.
+    if (senderId.isEmpty()) {
+        senderId = m_room->localMember().id();
+    }
+    if (m_eventSenderObject == nullptr) {
+        m_eventSenderObject = std::unique_ptr<NeochatRoomMember>(new NeochatRoomMember(m_room, senderId));
+    }
+    Q_EMIT eventUpdated();
+}
+
 bool MessageContentModel::showAuthor() const
 {
     return m_showAuthor;
@@ -239,7 +261,7 @@ QVariant MessageContentModel::data(const QModelIndex &index, int role) const
         return eventHandler.getTimeString(false, QLocale::ShortFormat, m_isPending, lastUpdated);
     }
     if (role == AuthorRole) {
-        return QVariant::fromValue(eventHandler.getAuthor(m_isPending));
+        return QVariant::fromValue<NeochatRoomMember *>(m_eventSenderObject.get());
     }
     if (role == MediaInfoRole) {
         return eventHandler.getMediaInfo();