CheatsManager: Create ARCodeWidget and GeckoCodeWidget only once.

Create ARCodeWidget and GeckoCodeWidget once on startup rather than
every time a game is launched or shutdown.

In addition to losing focus on the tab (since the previous widget and
tab no longer existed), the behavior prior to this commit could cause a
crash if the user initiated a game shutdown and then opened a code edit
window since the AR/GeckoCodeWidget would get deleted in the meantime.

Source/Core/DolphinQt/CheatsManager.cpp

@@ -36,8 +36,6 @@ CheatsManager::CheatsManager(Core::System& system, QWidget* parent)
   CreateWidgets();
   ConnectWidgets();
 
-  RefreshCodeTabs(Core::GetState(m_system), true);
-
   auto& settings = Settings::GetQSettings();
   restoreGeometry(settings.value(QStringLiteral("cheatsmanager/geometry")).toByteArray());
 }
@@ -50,7 +48,7 @@ CheatsManager::~CheatsManager()
 
 void CheatsManager::OnStateChanged(Core::State state)
 {
-  RefreshCodeTabs(state, false);
+  RefreshCodeTabs(state);
   if (state == Core::State::Paused)
     UpdateAllCheatSearchWidgetCurrentValues();
 }
@@ -99,67 +97,45 @@ void CheatsManager::showEvent(QShowEvent* event)
   RegisterAfterFrameEventCallback();
 }
 
-void CheatsManager::RefreshCodeTabs(Core::State state, bool force)
+void CheatsManager::RefreshCodeTabs(Core::State state)
 {
-  if (!force && (state == Core::State::Starting || state == Core::State::Stopping))
+  if (state == Core::State::Starting || state == Core::State::Stopping)
     return;
 
   const auto& game_id =
       state != Core::State::Uninitialized ? SConfig::GetInstance().GetGameID() : std::string();
   const auto& game_tdb_id = SConfig::GetInstance().GetGameTDBID();
   const u16 revision = SConfig::GetInstance().GetRevision();
 
-  if (!force && m_game_id == game_id && m_game_tdb_id == game_tdb_id && m_revision == revision)
+  if (m_game_id == game_id && m_game_tdb_id == game_tdb_id && m_revision == revision)
     return;
 
   m_game_id = game_id;
   m_game_tdb_id = game_tdb_id;
   m_revision = revision;
 
-  if (m_ar_code)
-  {
-    const int tab_index = m_tab_widget->indexOf(m_ar_code);
-    if (tab_index != -1)
-      m_tab_widget->removeTab(tab_index);
-    m_ar_code->deleteLater();
-    m_ar_code = nullptr;
-  }
-
-  if (m_gecko_code)
-  {
-    const int tab_index = m_tab_widget->indexOf(m_gecko_code);
-    if (tab_index != -1)
-      m_tab_widget->removeTab(tab_index);
-    m_gecko_code->deleteLater();
-    m_gecko_code = nullptr;
-  }
-
-  m_ar_code = new ARCodeWidget(m_game_id, m_revision, false);
-  m_gecko_code = new GeckoCodeWidget(m_game_id, m_game_tdb_id, m_revision, false);
-  m_tab_widget->insertTab(0, m_ar_code, tr("AR Code"));
-  m_tab_widget->insertTab(1, m_gecko_code, tr("Gecko Codes"));
-  m_tab_widget->setTabUnclosable(0);
-  m_tab_widget->setTabUnclosable(1);
-
-  connect(m_ar_code, &ARCodeWidget::OpenGeneralSettings, this, &CheatsManager::OpenGeneralSettings);
-  connect(m_gecko_code, &GeckoCodeWidget::OpenGeneralSettings, this,
-          &CheatsManager::OpenGeneralSettings);
-#ifdef USE_RETRO_ACHIEVEMENTS
-  connect(m_ar_code, &ARCodeWidget::OpenAchievementSettings, this,
-          &CheatsManager::OpenAchievementSettings);
-  connect(m_gecko_code, &GeckoCodeWidget::OpenAchievementSettings, this,
-          &CheatsManager::OpenAchievementSettings);
-#endif  // USE_RETRO_ACHIEVEMENTS
+  m_ar_code->ChangeGame(m_game_id, m_revision);
+  m_gecko_code->ChangeGame(m_game_id, m_game_tdb_id, m_revision);
 }
 
 void CheatsManager::CreateWidgets()
 {
   m_tab_widget = new PartiallyClosableTabWidget;
   m_button_box = new QDialogButtonBox(QDialogButtonBox::Close);
 
+  int tab_index;
+
+  m_ar_code = new ARCodeWidget(m_game_id, m_revision, false);
+  tab_index = m_tab_widget->addTab(m_ar_code, tr("AR Code"));
+  m_tab_widget->setTabUnclosable(tab_index);
+
+  m_gecko_code = new GeckoCodeWidget(m_game_id, m_game_tdb_id, m_revision, false);
+  tab_index = m_tab_widget->addTab(m_gecko_code, tr("Gecko Codes"));
+  m_tab_widget->setTabUnclosable(tab_index);
+
   m_cheat_search_new = new CheatSearchFactoryWidget();
-  m_tab_widget->addTab(m_cheat_search_new, tr("Start New Cheat Search"));
-  m_tab_widget->setTabUnclosable(0);
+  tab_index = m_tab_widget->addTab(m_cheat_search_new, tr("Start New Cheat Search"));
+  m_tab_widget->setTabUnclosable(tab_index);
 
   auto* layout = new QVBoxLayout;
   layout->addWidget(m_tab_widget);
@@ -172,14 +148,9 @@ void CheatsManager::OnNewSessionCreated(const Cheats::CheatSearchSessionBase& se
 {
   auto* w = new CheatSearchWidget(m_system, session.Clone());
   const int tab_index = m_tab_widget->addTab(w, tr("Cheat Search"));
-  w->connect(w, &CheatSearchWidget::ActionReplayCodeGenerated, this,
-             [this](const ActionReplay::ARCode& ar_code) {
-               if (m_ar_code)
-                 m_ar_code->AddCode(ar_code);
-             });
-  w->connect(w, &CheatSearchWidget::ShowMemory, [this](u32 address) { emit ShowMemory(address); });
-  w->connect(w, &CheatSearchWidget::RequestWatch,
-             [this](QString name, u32 address) { emit RequestWatch(name, address); });
+  connect(w, &CheatSearchWidget::ActionReplayCodeGenerated, m_ar_code, &ARCodeWidget::AddCode);
+  connect(w, &CheatSearchWidget::ShowMemory, this, &CheatsManager::ShowMemory);
+  connect(w, &CheatSearchWidget::RequestWatch, this, &CheatsManager::RequestWatch);
   m_tab_widget->setCurrentIndex(tab_index);
 }
 
@@ -196,4 +167,13 @@ void CheatsManager::ConnectWidgets()
   connect(m_cheat_search_new, &CheatSearchFactoryWidget::NewSessionCreated, this,
           &CheatsManager::OnNewSessionCreated);
   connect(m_tab_widget, &QTabWidget::tabCloseRequested, this, &CheatsManager::OnTabCloseRequested);
+  connect(m_ar_code, &ARCodeWidget::OpenGeneralSettings, this, &CheatsManager::OpenGeneralSettings);
+  connect(m_gecko_code, &GeckoCodeWidget::OpenGeneralSettings, this,
+          &CheatsManager::OpenGeneralSettings);
+#ifdef USE_RETRO_ACHIEVEMENTS
+  connect(m_ar_code, &ARCodeWidget::OpenAchievementSettings, this,
+          &CheatsManager::OpenAchievementSettings);
+  connect(m_gecko_code, &GeckoCodeWidget::OpenAchievementSettings, this,
+          &CheatsManager::OpenAchievementSettings);
+#endif  // USE_RETRO_ACHIEVEMENTS
 }

Source/Core/DolphinQt/CheatsManager.h

@@ -58,7 +58,7 @@ class CheatsManager : public QDialog
   void OnNewSessionCreated(const Cheats::CheatSearchSessionBase& session);
   void OnTabCloseRequested(int index);
 
-  void RefreshCodeTabs(Core::State state, bool force);
+  void RefreshCodeTabs(Core::State state);
   void UpdateAllCheatSearchWidgetCurrentValues();
 
   std::string m_game_id;

Source/Core/DolphinQt/Config/ARCodeWidget.cpp

@@ -40,6 +40,17 @@ ARCodeWidget::ARCodeWidget(std::string game_id, u16 game_revision, bool restart_
 
 ARCodeWidget::~ARCodeWidget() = default;
 
+void ARCodeWidget::ChangeGame(std::string game_id, const u16 game_revision)
+{
+  m_game_id = std::move(game_id);
+  m_game_revision = game_revision;
+  m_restart_required = false;
+
+  m_ar_codes.clear();
+
+  LoadCodes();
+}
+
 void ARCodeWidget::CreateWidgets()
 {
   m_warning = new CheatWarningWidget(m_game_id, m_restart_required, this);

Source/Core/DolphinQt/Config/ARCodeWidget.h

@@ -31,6 +31,7 @@ class ARCodeWidget : public QWidget
   explicit ARCodeWidget(std::string game_id, u16 game_revision, bool restart_required = true);
   ~ARCodeWidget() override;
 
+  void ChangeGame(std::string game_id, u16 game_revision);
   void AddCode(ActionReplay::ARCode code);
 
 signals:

Source/Core/DolphinQt/Config/GeckoCodeWidget.cpp

@@ -45,6 +45,24 @@ GeckoCodeWidget::GeckoCodeWidget(std::string game_id, std::string gametdb_id, u1
   LoadCodes();
 }
 
+void GeckoCodeWidget::ChangeGame(std::string game_id, std::string gametdb_id,
+                                 const u16 game_revision)
+{
+  m_game_id = std::move(game_id);
+  m_gametdb_id = std::move(gametdb_id);
+  m_game_revision = game_revision;
+  m_restart_required = false;
+
+  m_gecko_codes.clear();
+  m_code_list->clear();
+  m_name_label->clear();
+  m_creator_label->clear();
+  m_code_description->clear();
+  m_code_view->clear();
+
+  LoadCodes();
+}
+
 GeckoCodeWidget::~GeckoCodeWidget() = default;
 
 void GeckoCodeWidget::CreateWidgets()

Source/Core/DolphinQt/Config/GeckoCodeWidget.h

@@ -33,6 +33,8 @@ class GeckoCodeWidget : public QWidget
                            bool restart_required = true);
   ~GeckoCodeWidget() override;
 
+  void ChangeGame(std::string game_id, std::string gametdb_id, u16 game_revision);
+
 signals:
   void OpenGeneralSettings();
 #ifdef USE_RETRO_ACHIEVEMENTS