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_NTP_NTP_LOGIN_HANDLER_H_ 6 #define CHROME_BROWSER_UI_WEBUI_NTP_NTP_LOGIN_HANDLER_H_ 7 8 #include "base/prefs/pref_member.h" 9 #include "content/public/browser/notification_observer.h" 10 #include "content/public/browser/notification_registrar.h" 11 #include "content/public/browser/web_ui_message_handler.h" 12 13 class Profile; 14 15 // The NTP 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 NTPLoginHandler : public content::WebUIMessageHandler, 19 public content::NotificationObserver { 20 public: 21 NTPLoginHandler(); 22 virtual ~NTPLoginHandler(); 23 24 // WebUIMessageHandler interface 25 virtual void RegisterMessages() OVERRIDE; 26 27 // content::NotificationObserver interface 28 virtual void Observe(int type, 29 const content::NotificationSource& source, 30 const content::NotificationDetails& details) OVERRIDE; 31 32 // Returns true if the login handler should be shown in a new tab page 33 // for the given |profile|. |profile| must not be NULL. 34 static bool ShouldShow(Profile* profile); 35 36 // Registers values (strings etc.) for the page. 37 static void GetLocalizedValues(Profile* profile, 38 base::DictionaryValue* values); 39 40 private: 41 // User actions while on the NTP when clicking on or viewing the sync promo. 42 enum NTPSignInPromoBuckets { 43 NTP_SIGN_IN_PROMO_VIEWED, 44 NTP_SIGN_IN_PROMO_CLICKED, 45 NTP_SIGN_IN_PROMO_BUCKET_BOUNDARY, 46 }; 47 48 // Called from JS when the NTP is loaded. |args| is the list of arguments 49 // passed from JS and should be an empty list. 50 void HandleInitializeSyncLogin(const base::ListValue* args); 51 52 // Called from JS when the user clicks the login container. It shows the 53 // appropriate UI based on the current sync state. |args| is the list of 54 // arguments passed from JS and should be an empty list. 55 void HandleShowSyncLoginUI(const base::ListValue* args); 56 57 // Records actions in SyncPromo.NTPPromo histogram. 58 void RecordInHistogram(int type); 59 60 // Called from JS when the sync promo NTP bubble has been displayed. |args| is 61 // the list of arguments passed from JS and should be an empty list. 62 void HandleLoginMessageSeen(const base::ListValue* args); 63 64 // Called from JS when the user clicks on the advanced link the sync promo NTP 65 // bubble. Use use this to navigate to the sync settings page. |args| is the 66 // list of arguments passed from JS and should be an empty list. 67 void HandleShowAdvancedLoginUI(const base::ListValue* args); 68 69 // Internal helper method 70 void UpdateLogin(); 71 72 StringPrefMember username_pref_; 73 BooleanPrefMember signin_allowed_pref_; 74 content::NotificationRegistrar registrar_; 75 }; 76 77 #endif // CHROME_BROWSER_UI_WEBUI_NTP_NTP_LOGIN_HANDLER_H_ 78