Alter code structure && change room list filtering mechanics && add

sorting && init categoriy for rooms.

src/roomlistmodel.cpp

@@ -0,0 +1,107 @@
+#include "roomlistmodel.h"
+
+#include <QtCore/QDebug>
+#include <QtGui/QBrush>
+#include <QtGui/QColor>
+
+RoomListModel::RoomListModel(QObject* parent) : QAbstractListModel(parent) {}
+
+RoomListModel::~RoomListModel() {}
+
+void RoomListModel::setConnection(QMatrixClient::Connection* connection) {
+  Q_ASSERT(connection);
+
+  using QMatrixClient::Connection;
+  using QMatrixClient::Room;
+  beginResetModel();
+  m_connection = connection;
+  connect(connection, &Connection::loggedOut, this,
+          [=] { setConnection(connection); });
+  //  connect(connection, &Connection::invitedRoom, this,
+  //          &RoomListModel::updateRoom);
+  //  connect(connection, &Connection::joinedRoom, this,
+  //          &RoomListModel::updateRoom);
+  //  connect(connection, &Connection::leftRoom, this,
+  //  &RoomListModel::updateRoom);
+  connect(connection, &Connection::aboutToDeleteRoom, this,
+          &RoomListModel::deleteRoom);
+
+  for (auto r : connection->roomMap()) addRoom(r);
+  endResetModel();
+}
+
+QMatrixClient::Room* RoomListModel::roomAt(int row) { return m_rooms.at(row); }
+
+void RoomListModel::addRoom(QMatrixClient::Room* room) {
+  beginInsertRows(QModelIndex(), m_rooms.count(), m_rooms.count());
+  connect(room, &QMatrixClient::Room::namesChanged, this,
+          &RoomListModel::namesChanged);
+  m_rooms.append(room);
+  endInsertRows();
+}
+
+void RoomListModel::deleteRoom(QMatrixClient::Room* room) {
+  const auto it = std::find(m_rooms.begin(), m_rooms.end(), room);
+  if (it == m_rooms.end()) return;  // Already deleted, nothing to do
+  const int row = it - m_rooms.begin();
+  beginRemoveRows(QModelIndex(), row, row);
+  m_rooms.erase(it);
+  endRemoveRows();
+}
+
+int RoomListModel::rowCount(const QModelIndex& parent) const {
+  if (parent.isValid()) return 0;
+  return m_rooms.count();
+}
+
+QVariant RoomListModel::data(const QModelIndex& index, int role) const {
+  if (!index.isValid()) return QVariant();
+
+  if (index.row() >= m_rooms.count()) {
+    qDebug() << "UserListModel: something wrong here...";
+    return QVariant();
+  }
+  QMatrixClient::Room* room = m_rooms.at(index.row());
+  if (role == NameRole) {
+    return room->displayName();
+  }
+  if (role == AvatarRole) {
+    if (room->avatarUrl().toString() != "") {
+      return room->avatarUrl();
+    }
+    return QVariant();
+  }
+  if (role == TopicRole) {
+    return room->topic();
+  }
+  if (role == CategoryRole) {
+    if (room->isFavourite()) return "Favorites";
+    if (room->isLowPriority()) return "Low Priorities";
+    return "Rooms";
+  }
+  if (role == HighlightRole) {
+    if (room->highlightCount() > 0) return QBrush(QColor("orange"));
+    return QVariant();
+  }
+  return QVariant();
+}
+
+void RoomListModel::namesChanged(QMatrixClient::Room* room) {
+  int row = m_rooms.indexOf(room);
+  emit dataChanged(index(row), index(row));
+}
+
+void RoomListModel::unreadMessagesChanged(QMatrixClient::Room* room) {
+  int row = m_rooms.indexOf(room);
+  emit dataChanged(index(row), index(row));
+}
+
+QHash<int, QByteArray> RoomListModel::roleNames() const {
+  QHash<int, QByteArray> roles;
+  roles[NameRole] = "name";
+  roles[AvatarRole] = "avatar";
+  roles[TopicRole] = "topic";
+  roles[CategoryRole] = "category";
+  roles[HighlightRole] = "highlight";
+  return roles;
+}