Add various missing things for appearance customization

src/ui/mainwindow.cpp

@@ -688,10 +688,10 @@ MainWindow::MainWindow(
   NowPlayingWidgetPositionChanged(ui_->now_playing->show_above_status_bar());
 
   // Load theme
+  appearance_ = new Appearance(this);
+  appearance_->LoadUserTheme();
   StyleSheetLoader* css_loader = new StyleSheetLoader(this);
   css_loader->SetStyleSheet(this, ":mainwindow.css");
-  appearance_ = new Appearance(this);
-  appearance_->Load();
 
   // Load playlists
   playlists_->Init(library_->backend(), playlist_backend_,
@@ -1944,6 +1944,7 @@ void MainWindow::EnsureSettingsDialogCreated() {
   settings_dialog_->SetGlobalShortcutManager(global_shortcuts_);
   settings_dialog_->SetGlobalSearch(global_search_);
   settings_dialog_->SetSongInfoView(song_info_view_);
+  settings_dialog_->SetAppearance(appearance_);
 
   // Settings
   connect(settings_dialog_.get(), SIGNAL(accepted()), SLOT(ReloadAllSettings()));

src/ui/settingsdialog.cpp

@@ -227,6 +227,15 @@ void SettingsDialog::accept() {
   QDialog::accept();
 }
 
+void SettingsDialog::reject() {
+  // Notify each page that user clicks on Cancel
+  foreach (const PageData& data, pages_.values()) {
+    data.page_->Cancel();
+  }
+
+  QDialog::reject();
+}
+
 void SettingsDialog::showEvent(QShowEvent* e) {
   // Load settings
   loading_settings_ = true;

src/ui/settingsdialog.h

@@ -27,6 +27,7 @@
 class QScrollArea;
 class QTreeWidgetItem;
 
+class Appearance;
 class BackgroundStreams;
 class GlobalSearch;
 class GlobalShortcuts;
@@ -85,6 +86,7 @@ public:
   void SetGstEngine(const GstEngine* engine) { gst_engine_ = engine; }
   void SetSongInfoView(SongInfoView* view) { song_info_view_ = view; }
   void SetGlobalSearch(GlobalSearch* global_search) { global_search_ = global_search; }
+  void SetAppearance(Appearance* appearance) { appearance_ = appearance; }
 
   bool is_loading_settings() const { return loading_settings_; }
 
@@ -94,11 +96,13 @@ public:
   SongInfoView* song_info_view() const { return song_info_view_; }
   BackgroundStreams* background_streams() const { return streams_; }
   GlobalSearch* global_search() const { return global_search_; }
+  Appearance* appearance() const { return appearance_; }
 
   void OpenAtPage(Page page);
 
   // QDialog
   void accept();
+  void reject();
 
   // QWidget
   void showEvent(QShowEvent* e);
@@ -127,6 +131,7 @@ private:
   SongInfoView* song_info_view_;
   BackgroundStreams* streams_;
   GlobalSearch* global_search_;
+  Appearance* appearance_;
 
   Ui_SettingsDialog* ui_;
   bool loading_settings_;

src/ui/settingspage.h

@@ -33,9 +33,11 @@ public:
   // Return false to grey out the page's item in the list.
   virtual bool IsEnabled() const { return true; }
 
-  // Load is called when the dialog is shown, Save when the user clicks OK.
+  // Load is called when the dialog is shown, Save when the user clicks OK, and
+  // Cancel when the user clicks on Cancel
   virtual void Load() = 0;
   virtual void Save() = 0;
+  virtual void Cancel() {}
 
   // The dialog that this page belongs to.
   SettingsDialog* dialog() const { return dialog_; }