chrome/browser/ui/webui/app_launcher_login_handler.h

   1 // Copyright (c) 2011 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_APP_LAUNCHER_LOGIN_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_APP_LAUNCHER_LOGIN_HANDLER_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "content/public/browser/web_ui_message_handler.h"
  11
  12 class Profile;
  13 class ProfileInfoWatcher;
  14
  15 // The login handler currently simply displays the current logged in
  16 // username at the top of the NTP (and update itself when that changes).
  17 // In the future it may expand to allow users to login from the NTP.
  18 class AppLauncherLoginHandler : public content::WebUIMessageHandler {
  19  public:
  20   AppLauncherLoginHandler();
  21   ~AppLauncherLoginHandler() override;
  22
  23   // WebUIMessageHandler implementation:
  24   void RegisterMessages() override;
  25
  26   // Returns true if the login handler should be shown in a new tab page
  27   // for the given |profile|. |profile| must not be NULL.
  28   static bool ShouldShow(Profile* profile);
  29
  30   // Registers values (strings etc.) for the page.
  31   static void GetLocalizedValues(Profile* profile,
  32                                  base::DictionaryValue* values);
  33
  34  private:
  35   // User actions while on the NTP when clicking on or viewing the sync promo.
  36   enum NTPSignInPromoBuckets {
  37     NTP_SIGN_IN_PROMO_VIEWED,
  38     NTP_SIGN_IN_PROMO_CLICKED,
  39     NTP_SIGN_IN_PROMO_BUCKET_BOUNDARY,
  40   };
  41
  42   // Called from JS when the NTP is loaded. |args| is the list of arguments
  43   // passed from JS and should be an empty list.
  44   void HandleInitializeSyncLogin(const base::ListValue* args);
  45
  46   // Called from JS when the user clicks the login container. It shows the
  47   // appropriate UI based on the current sync state. |args| is the list of
  48   // arguments passed from JS and should be an empty list.
  49   void HandleShowSyncLoginUI(const base::ListValue* args);
  50
  51   // Records actions in SyncPromo.NTPPromo histogram.
  52   void RecordInHistogram(int type);
  53
  54   // Called from JS when the sync promo NTP bubble has been displayed. |args| is
  55   // the list of arguments passed from JS and should be an empty list.
  56   void HandleLoginMessageSeen(const base::ListValue* args);
  57
  58   // Called from JS when the user clicks on the advanced link the sync promo NTP
  59   // bubble. Use use this to navigate to the sync settings page. |args| is the
  60   // list of arguments passed from JS and should be an empty list.
  61   void HandleShowAdvancedLoginUI(const base::ListValue* args);
  62
  63   // Internal helper method
  64   void UpdateLogin();
  65
  66   // Watches this web UI's profile for info changes (e.g. authenticated username
  67   // changes).
  68   scoped_ptr<ProfileInfoWatcher> profile_info_watcher_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(AppLauncherLoginHandler);
  71 };
  72
  73 #endif  // CHROME_BROWSER_UI_WEBUI_APP_LAUNCHER_LOGIN_HANDLER_H_