chrome/browser/ui/webui/welcome_handler_android.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_WELCOME_HANDLER_ANDROID_H_
   6 #define CHROME_BROWSER_UI_WEBUI_WELCOME_HANDLER_ANDROID_H_
   7
   8 #include "base/scoped_observer.h"
   9 #include "chrome/browser/sync/profile_sync_service.h"
  10 #include "chrome/browser/sync/profile_sync_service_observer.h"
  11 #include "content/public/browser/web_ui_message_handler.h"
  12
  13 namespace base {
  14 class ListValue;
  15 }
  16
  17 // Handler class for chrome://welcome page.
  18 class WelcomeHandler : public content::WebUIMessageHandler,
  19                        public ProfileSyncServiceObserver {
  20  public:
  21   WelcomeHandler();
  22   virtual ~WelcomeHandler();
  23
  24   // content::WebUIMessageHandler implementation.
  25   virtual void RegisterMessages() OVERRIDE;
  26
  27   // Callback for the "updateSyncFooterVisibility" message. This makes the sync
  28   // footer in the page visible if sync is enabled.
  29   void HandleUpdateSyncFooterVisibility(const base::ListValue* args);
  30
  31   // Callback for the "showSyncSettings" message. This opens the sync settings
  32   // menu fragment.
  33   void HandleShowSyncSettings(const base::ListValue* args);
  34
  35   // Callback for the "showTermsOfService" message. This opens the terms of
  36   // service popup.
  37   void HandleShowTermsOfService(const base::ListValue* args);
  38
  39   // ProfileSyncServiceObserver implementation
  40   virtual void OnStateChanged() OVERRIDE;
  41
  42  private:
  43   // Update the sync footer visibility. Set |forced| if you want to force to
  44   // send an update to the renderer regardless of whether we assume the state
  45   // is up to date or not.
  46   void UpdateSyncFooterVisibility(bool forced);
  47
  48   // Cached pointer to the sync service for this profile.
  49   ProfileSyncService* sync_service_;
  50
  51   ScopedObserver<ProfileSyncService, WelcomeHandler> observer_manager_;
  52
  53   // Whether the sync footer is visible on the page.
  54   bool is_sync_footer_visible_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(WelcomeHandler);
  57 };
  58
  59 #endif  // CHROME_BROWSER_UI_WEBUI_WELCOME_HANDLER_ANDROID_H_