chrome/browser/ui/webui/settings/appearance_handler.h

   1 // Copyright (c) 2015 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_SETTINGS_APPEARANCE_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_SETTINGS_APPEARANCE_HANDLER_H_
   7
   8 #include "base/macros.h"
   9 #include "chrome/browser/ui/webui/settings/md_settings_ui.h"
  10 #include "content/public/browser/notification_observer.h"
  11 #include "content/public/browser/notification_registrar.h"
  12
  13 namespace base {
  14 class ListValue;
  15 }
  16
  17 namespace content {
  18 class WebUI;
  19 }
  20
  21 class Profile;
  22
  23 namespace settings {
  24
  25 // Chrome "Appearance" settings page UI handler.
  26 class AppearanceHandler : public SettingsPageUIHandler,
  27                           public content::NotificationObserver {
  28  public:
  29   explicit AppearanceHandler(content::WebUI* webui);
  30   ~AppearanceHandler() override;
  31
  32   // SettingsPageUIHandler implementation.
  33   void RegisterMessages() override;
  34
  35  private:
  36   // content::NotificationObserver implementation.
  37   void Observe(int type,
  38                const content::NotificationSource& source,
  39                const content::NotificationDetails& details) override;
  40
  41   // Queries the enabled state of the reset-theme control.
  42   base::FundamentalValue QueryResetThemeEnabledState();
  43
  44   // Resets the UI theme of the browser to the default theme.
  45   void ResetTheme(const base::ListValue*);
  46
  47   // Sends the enabled state of the reset-theme control to the JS.
  48   void GetResetThemeEnabled(const base::ListValue* args);
  49
  50   Profile* profile_;  // Weak pointer.
  51
  52   // Used to register for relevant notifications.
  53   content::NotificationRegistrar registrar_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(AppearanceHandler);
  56 };
  57
  58 }  // namespace settings
  59
  60 #endif  // CHROME_BROWSER_UI_WEBUI_SETTINGS_APPEARANCE_HANDLER_H_