GTK: disable theme buttons in options dialog when we are already using that t...

chrome/browser/gtk/options/content_page_gtk.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_GTK_OPTIONS_CONTENT_PAGE_GTK_H_
 #define CHROME_BROWSER_GTK_OPTIONS_CONTENT_PAGE_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "chrome/browser/options_page_base.h"
 #include "chrome/browser/profile.h"
 #include "chrome/common/pref_member.h"
 
 class ContentPageGtk : public OptionsPageBase {
  public:
   explicit ContentPageGtk(Profile* profile);
   ~ContentPageGtk();
 
   GtkWidget* get_page_widget() const {
     return page_;
   }
 
  private:
   // Overridden from OptionsPageBase.
   virtual void NotifyPrefChanged(const std::wstring* pref_name);
 
+  // Overridden from OptionsPageBase.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+  // Update content area after a theme changed.
+  void ObserveThemeChanged();
+
   // Initialize the option group widgets, return their container.
   GtkWidget* InitPasswordSavingGroup();
   GtkWidget* InitFormAutofillGroup();
   GtkWidget* InitBrowsingDataGroup();
   GtkWidget* InitThemesGroup();
 
   // Callback for import button.
   static void OnImportButtonClicked(GtkButton* widget, ContentPageGtk* page);
 
   // Callback for clear data button.
@@ skipping 32 matching lines @@
   GtkWidget* passwords_asktosave_radio_;
   GtkWidget* passwords_neversave_radio_;
 
   // Widgets for the Form Autofill group.
   GtkWidget* form_autofill_asktosave_radio_;
   GtkWidget* form_autofill_neversave_radio_;
 
   // Widgets for the Appearance group.
   GtkWidget* system_title_bar_show_radio_;
   GtkWidget* system_title_bar_hide_radio_;
+  GtkWidget* themes_reset_button_;
+#if defined(TOOLKIT_GTK)
+  GtkWidget* gtk_theme_button_;
+#endif
 
   // The parent GtkTable widget
   GtkWidget* page_;
 
   // Pref members.
   BooleanPrefMember ask_to_save_passwords_;
   BooleanPrefMember ask_to_save_form_autofill_;
   BooleanPrefMember use_custom_chrome_frame_;
 
   // Flag to ignore gtk callbacks while we are loading prefs, to avoid
   // then turning around and saving them again.
   bool initializing_;
 
+  NotificationRegistrar registrar_;
+
   DISALLOW_COPY_AND_ASSIGN(ContentPageGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_OPTIONS_CONTENT_PAGE_GTK_H_