chrome/browser/ui/webui/theme_handler.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_WEBUI_THEME_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_THEME_HANDLER_H_
   7
   8 #include "content/public/browser/notification_observer.h"
   9 #include "content/public/browser/notification_registrar.h"
  10 #include "content/public/browser/web_ui_message_handler.h"
  11
  12 class Profile;
  13
  14 namespace content {
  15 class WebUI;
  16 }
  17
  18 // A class to keep the ThemeSource up to date when theme changes.
  19 class ThemeHandler : public content::WebUIMessageHandler,
  20                      public content::NotificationObserver {
  21  public:
  22   explicit ThemeHandler();
  23   ~ThemeHandler() override;
  24
  25  private:
  26   // content::WebUIMessageHandler implementation.
  27   void RegisterMessages() override;
  28
  29   // Re/set the CSS caches.
  30   void InitializeCSSCaches();
  31
  32   // content::NotificationObserver implementation.
  33   void Observe(int type,
  34                const content::NotificationSource& source,
  35                const content::NotificationDetails& details) override;
  36
  37   Profile* GetProfile() const;
  38
  39   content::NotificationRegistrar registrar_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(ThemeHandler);
  42 };
  43
  44 #endif  // CHROME_BROWSER_UI_WEBUI_THEME_HANDLER_H_