citra_qt: Update the multiplayer dialogs when game list is repopulated

The multiplayer state object and dialogs hold a (modified) game list model, but it isn't updated when the actual game list changes. This updates the multiplayer dialogs with the new game list when it got repopulated.

src/citra_qt/game_list.cpp

@@ -421,6 +421,8 @@ void GameList::DonePopulating(QStringList watch_list) {
     if (childrenTotal > 0) {
         search_field->setFocus();
     }
+
+    emit PopulatingCompleted();
 }
 
 void GameList::PopupContextMenu(const QPoint& menu_location) {

src/citra_qt/game_list.h

@@ -76,6 +76,7 @@ signals:
     void OpenDirectory(QString directory);
     void AddDirectory();
     void ShowList(bool show);
+    void PopulatingCompleted();
 
 private slots:
     void onItemExpanded(const QModelIndex& item);

src/citra_qt/main.cpp

@@ -506,6 +506,8 @@ void GMainWindow::ConnectWidgetEvents() {
     connect(game_list_placeholder, &GameListPlaceholder::AddDirectory, this,
             &GMainWindow::OnGameListAddDirectory);
     connect(game_list, &GameList::ShowList, this, &GMainWindow::OnGameListShowList);
+    connect(game_list, &GameList::PopulatingCompleted,
+            [this] { multiplayer_state->UpdateGameList(game_list->GetModel()); });
 
     connect(this, &GMainWindow::EmulationStarting, render_window,
             &GRenderWindow::OnEmulationStarting);

src/citra_qt/multiplayer/host_room.cpp

@@ -41,13 +41,7 @@ HostRoomWindow::HostRoomWindow(QWidget* parent, QStandardItemModel* list,
 
     // Create a proxy to the game list to display the list of preferred games
     game_list = new QStandardItemModel;
-
-    for (int i = 0; i < list->rowCount(); i++) {
-        auto parent = list->item(i, 0);
-        for (int j = 0; j < parent->rowCount(); j++) {
-            game_list->appendRow(parent->child(j)->clone());
-        }
-    }
+    UpdateGameList(list);
 
     proxy = new ComboBoxProxyModel;
     proxy->setSourceModel(game_list);
@@ -79,6 +73,16 @@ HostRoomWindow::HostRoomWindow(QWidget* parent, QStandardItemModel* list,
 
 HostRoomWindow::~HostRoomWindow() = default;
 
+void HostRoomWindow::UpdateGameList(QStandardItemModel* list) {
+    game_list->clear();
+    for (int i = 0; i < list->rowCount(); i++) {
+        auto parent = list->item(i, 0);
+        for (int j = 0; j < parent->rowCount(); j++) {
+            game_list->appendRow(parent->child(j)->clone());
+        }
+    }
+}
+
 void HostRoomWindow::RetranslateUi() {
     ui->retranslateUi(this);
 }

src/citra_qt/multiplayer/host_room.h

@@ -38,6 +38,11 @@ public:
                             std::shared_ptr<Core::AnnounceMultiplayerSession> session);
     ~HostRoomWindow();
 
+    /**
+     * Updates the dialog with a new game list model.
+     * This model should be the original model of the game list.
+     */
+    void UpdateGameList(QStandardItemModel* list);
     void RetranslateUi();
 
 private:

src/citra_qt/multiplayer/lobby.cpp

@@ -35,13 +35,7 @@ Lobby::Lobby(QWidget* parent, QStandardItemModel* list,
 
     // Create a proxy to the game list to get the list of games owned
     game_list = new QStandardItemModel;
-
-    for (int i = 0; i < list->rowCount(); i++) {
-        auto parent = list->item(i, 0);
-        for (int j = 0; j < parent->rowCount(); j++) {
-            game_list->appendRow(parent->child(j)->clone());
-        }
-    }
+    UpdateGameList(list);
 
     proxy = new LobbyFilterProxyModel(this, game_list);
     proxy->setSourceModel(model);
@@ -88,6 +82,18 @@ Lobby::Lobby(QWidget* parent, QStandardItemModel* list,
     RefreshLobby();
 }
 
+void Lobby::UpdateGameList(QStandardItemModel* list) {
+    game_list->clear();
+    for (int i = 0; i < list->rowCount(); i++) {
+        auto parent = list->item(i, 0);
+        for (int j = 0; j < parent->rowCount(); j++) {
+            game_list->appendRow(parent->child(j)->clone());
+        }
+    }
+    if (proxy)
+        proxy->UpdateGameList(game_list);
+}
+
 void Lobby::RetranslateUi() {
     ui->retranslateUi(this);
 }
@@ -260,6 +266,10 @@ void Lobby::OnRefreshLobby() {
 LobbyFilterProxyModel::LobbyFilterProxyModel(QWidget* parent, QStandardItemModel* list)
     : QSortFilterProxyModel(parent), game_list(list) {}
 
+void LobbyFilterProxyModel::UpdateGameList(QStandardItemModel* list) {
+    game_list = list;
+}
+
 bool LobbyFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex& sourceParent) const {
     // Prioritize filters by fastest to compute
 

src/citra_qt/multiplayer/lobby.h

@@ -30,6 +30,11 @@ public:
                    std::shared_ptr<Core::AnnounceMultiplayerSession> session);
     ~Lobby() = default;
 
+    /**
+     * Updates the lobby with a new game list model.
+     * This model should be the original model of the game list.
+     */
+    void UpdateGameList(QStandardItemModel* list);
     void RetranslateUi();
 
 public slots:
@@ -76,9 +81,9 @@ private:
      */
     QString PasswordPrompt();
 
-    QStandardItemModel* model;
-    QStandardItemModel* game_list;
-    LobbyFilterProxyModel* proxy;
+    QStandardItemModel* model{};
+    QStandardItemModel* game_list{};
+    LobbyFilterProxyModel* proxy{};
 
     QFutureWatcher<AnnounceMultiplayerRoom::RoomList> room_list_watcher;
     std::weak_ptr<Core::AnnounceMultiplayerSession> announce_multiplayer_session;
@@ -95,6 +100,13 @@ class LobbyFilterProxyModel : public QSortFilterProxyModel {
 
 public:
     explicit LobbyFilterProxyModel(QWidget* parent, QStandardItemModel* list);
+
+    /**
+     * Updates the filter with a new game list model.
+     * This model should be the processed one created by the Lobby.
+     */
+    void UpdateGameList(QStandardItemModel* list);
+
     bool filterAcceptsRow(int sourceRow, const QModelIndex& sourceParent) const override;
     void sort(int column, Qt::SortOrder order) override;
 

src/citra_qt/multiplayer/state.cpp

@@ -286,3 +286,13 @@ bool MultiplayerState::IsHostingPublicRoom() const {
 void MultiplayerState::UpdateCredentials() {
     announce_multiplayer_session->UpdateCredentials();
 }
+
+void MultiplayerState::UpdateGameList(QStandardItemModel* game_list) {
+    game_list_model = game_list;
+    if (lobby) {
+        lobby->UpdateGameList(game_list);
+    }
+    if (host_room) {
+        host_room->UpdateGameList(game_list);
+    }
+}

src/citra_qt/multiplayer/state.h

@@ -46,6 +46,12 @@ public:
 
     void UpdateCredentials();
 
+    /**
+     * Updates the multiplayer dialogs with a new game list model.
+     * This model should be the original model of the game list.
+     */
+    void UpdateGameList(QStandardItemModel* game_list);
+
 public slots:
     void OnNetworkStateChanged(const Network::RoomMember::State& state);
     void OnNetworkError(const Network::RoomMember::Error& error);