Added a utility to the menu for rescanning the ROM directory

Also added a new Utilities menu to the main menu

es-app/src/CollectionSystemsManager.cpp

@@ -88,29 +88,36 @@ CollectionSystemsManager* CollectionSystemsManager::getInstance()
     return &instance;
 }
 
-void CollectionSystemsManager::deinit()
+void CollectionSystemsManager::deinit(const bool shutdown)
 {
     // Don't attempt to remove any collections if no systems exist.
     if (SystemData::sSystemVector.size() > 0) {
         removeCollectionsFromDisplayedSystems();
 
         // Delete all custom collections.
-        for (std::map<std::string, CollectionSystemData, StringComparator>::const_iterator it =
-                 mCustomCollectionSystemsData.cbegin();
-             it != mCustomCollectionSystemsData.cend(); ++it)
+        for (std::map<std::string, CollectionSystemData, StringComparator>::iterator it =
+                 mCustomCollectionSystemsData.begin();
+             it != mCustomCollectionSystemsData.end(); ++it) {
             delete it->second.system;
+            it->second.system = nullptr;
+        }
 
         // Delete the custom collections bundle.
-        if (mCustomCollectionsBundle)
+        if (mCustomCollectionsBundle) {
             delete mCustomCollectionsBundle;
+            mCustomCollectionsBundle = nullptr;
+        }
 
         // Delete the auto collections systems.
-        for (auto it = mAutoCollectionSystemsData.cbegin(); // Line break.
-             it != mAutoCollectionSystemsData.cend(); ++it)
+        for (auto it = mAutoCollectionSystemsData.begin(); // Line break.
+             it != mAutoCollectionSystemsData.end(); ++it) {
             delete (*it).second.system;
+            (*it).second.system = nullptr;
+        }
     }
 
-    delete mCollectionEnvData;
+    if (shutdown)
+        delete mCollectionEnvData;
 }
 
 void CollectionSystemsManager::saveCustomCollection(SystemData* sys)

es-app/src/CollectionSystemsManager.h

@@ -78,8 +78,8 @@ public:
     static CollectionSystemsManager* getInstance();
     void saveCustomCollection(SystemData* sys);
 
-    // Clean up all systems, called during application shutdown.
-    void deinit();
+    // Clean up all systems, called during application shutdown and ROM directory rescan.
+    void deinit(const bool shutdown);
 
     // Functions to load all collections into memory, and enable the active ones:
     // Load all collection systems.
@@ -137,7 +137,7 @@ public:
     const bool isEditing() const { return mIsEditingCustom; }
     const std::string& getEditingCollection() const { return mEditingCollection; }
 
-    static inline std::string myCollectionsName = "collections";
+    static inline std::string myCollectionsName {"collections"};
 
 protected:
     void trimCollectionCount(FileData* rootFolder, int limit);

es-app/src/guis/GuiMenu.cpp

@@ -65,6 +65,9 @@ GuiMenu::GuiMenu()
     if (isFullUI)
         addEntry("OTHER SETTINGS", mMenuColorPrimary, true, [this] { openOtherOptions(); });
 
+    if (isFullUI)
+        addEntry("UTILITIES", mMenuColorPrimary, true, [this] { openUtilities(); });
+
     if (!Settings::getInstance()->getBool("ForceKiosk") &&
         Settings::getInstance()->getString("UIMode") != "kiosk") {
 #if defined(__APPLE__)
@@ -1727,6 +1730,72 @@ void GuiMenu::openOtherOptions()
     mWindow->pushGui(s);
 }
 
+void GuiMenu::openUtilities()
+{
+    auto s = new GuiSettings("UTILITIES");
+
+    Window* window {mWindow};
+    HelpStyle style {getHelpStyle()};
+
+    ComponentListRow row;
+
+    row.makeAcceptInputHandler([s, window, this] {
+        window->pushGui(new GuiMsgBox(
+            this->getHelpStyle(),
+            "THIS WILL RESCAN YOUR ROM DIRECTORY\n"
+            "FOR CHANGES SUCH AS ADDED OR REMOVED\n"
+            "GAMES AND SYSTEMS, PROCEED?",
+            "YES",
+            [this, window] {
+                if (CollectionSystemsManager::getInstance()->isEditing())
+                    CollectionSystemsManager::getInstance()->exitEditMode();
+                window->stopInfoPopup();
+                GuiMenu::close(true);
+                // Write any gamelist.xml changes before proceeding with the reload.
+                if (Settings::getInstance()->getString("SaveGamelistsMode") != "never") {
+                    for (auto system : SystemData::sSystemVector)
+                        system->writeMetaData();
+                }
+                window->renderSplashScreen(Window::SplashScreenState::SCANNING, 0.0f);
+                ViewController::getInstance()->resetAll();
+                CollectionSystemsManager::getInstance()->deinit(false);
+                SystemData::loadConfig();
+                if (SystemData::sStartupExitSignal) {
+                    SDL_Event quit;
+                    quit.type = SDL_QUIT;
+                    SDL_PushEvent(&quit);
+                    return;
+                }
+                if (SystemData::sSystemVector.empty()) {
+                    // It's possible that there are no longer any games.
+                    window->invalidateCachedBackground();
+                    ViewController::getInstance()->noGamesDialog();
+                }
+                else {
+                    ViewController::getInstance()->preload();
+                    if (SystemData::sStartupExitSignal) {
+                        SDL_Event quit;
+                        quit.type = SDL_QUIT;
+                        SDL_PushEvent(&quit);
+                        return;
+                    }
+                    ViewController::getInstance()->goToStart(false);
+                }
+            },
+            "NO", nullptr));
+    });
+    auto rescanROMDirectory = std::make_shared<TextComponent>(
+        "RESCAN ROM DIRECTORY", Font::get(FONT_SIZE_MEDIUM), mMenuColorPrimary);
+    rescanROMDirectory->setSelectable(true);
+    row.addElement(rescanROMDirectory, true);
+    s->addRow(row);
+
+    row.elements.clear();
+
+    s->setSize(mSize);
+    mWindow->pushGui(s);
+}
+
 void GuiMenu::openQuitMenu()
 {
     if (!Settings::getInstance()->getBool("ShowQuitMenu")) {

es-app/src/guis/GuiMenu.h

@@ -44,6 +44,7 @@ private:
     void openConfigInput(GuiSettings* settings);
     void openCollectionSystemOptions();
     void openOtherOptions();
+    void openUtilities();
     void openQuitMenu();
 
     Renderer* mRenderer;

es-app/src/main.cpp

@@ -855,7 +855,7 @@ int main(int argc, char* argv[])
         delete window->peekGui();
     window->deinit();
 
-    CollectionSystemsManager::getInstance()->deinit();
+    CollectionSystemsManager::getInstance()->deinit(true);
     SystemData::deleteSystems();
     NavigationSounds::getInstance().deinit();
 

es-app/src/views/ViewController.cpp

@@ -1209,8 +1209,7 @@ void ViewController::render(const glm::mat4& parentTrans)
 
 void ViewController::preload()
 {
-    unsigned int systemCount {static_cast<unsigned int>(SystemData::sSystemVector.size())};
-
+    const unsigned int systemCount {static_cast<unsigned int>(SystemData::sSystemVector.size())};
     // This reduces the amount of texture pop-in when loading theme extras.
     if (!SystemData::sSystemVector.empty())
         getSystemListView();
@@ -1409,6 +1408,15 @@ void ViewController::reloadAll()
     updateHelpPrompts();
 }
 
+void ViewController::resetAll()
+{
+    mGamelistViews.clear();
+    mSystemListView.reset();
+    mCurrentView.reset();
+    mPreviousView.reset();
+    mSkipView.reset();
+}
+
 std::vector<HelpPrompt> ViewController::getHelpPrompts()
 {
     std::vector<HelpPrompt> prompts;

es-app/src/views/ViewController.h

@@ -54,6 +54,9 @@ public:
     // Used when the "ThemeSet" setting changes.
     void reloadAll();
 
+    // Reset all views, which is needed when rescanning the ROM directory.
+    void resetAll();
+
     // Navigation.
     void goToNextGamelist();
     void goToPrevGamelist();