1 // Copyright (c) 2012 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_FOREIGN_SESSION_HANDLER_H_ 6 #define CHROME_BROWSER_UI_WEBUI_NTP_FOREIGN_SESSION_HANDLER_H_ 7 8 #include <vector> 9 10 #include "base/time/time.h" 11 #include "chrome/browser/sessions/session_service.h" 12 #include "chrome/browser/sync/glue/session_model_associator.h" 13 #include "content/public/browser/notification_observer.h" 14 #include "content/public/browser/notification_registrar.h" 15 #include "content/public/browser/web_ui.h" 16 #include "content/public/browser/web_ui_message_handler.h" 17 18 namespace user_prefs { 19 class PrefRegistrySyncable; 20 } 21 22 namespace browser_sync { 23 24 class ForeignSessionHandler : public content::WebUIMessageHandler, 25 public content::NotificationObserver { 26 public: 27 // Invalid value, used to note that we don't have a tab or window number. 28 static const int kInvalidId = -1; 29 30 // WebUIMessageHandler implementation. 31 virtual void RegisterMessages() OVERRIDE; 32 33 ForeignSessionHandler(); 34 virtual ~ForeignSessionHandler() {} 35 36 static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry); 37 38 static void OpenForeignSessionTab(content::WebUI* web_ui, 39 const std::string& session_string_value, 40 SessionID::id_type window_num, 41 SessionID::id_type tab_id, 42 const WindowOpenDisposition& disposition); 43 44 static void OpenForeignSessionWindows(content::WebUI* web_ui, 45 const std::string& session_string_value, 46 SessionID::id_type window_num); 47 48 // Helper method to create JSON compatible objects from Session objects. 49 static bool SessionTabToValue(const SessionTab& tab, 50 DictionaryValue* dictionary); 51 52 // Returns a pointer to the current session model associator or NULL. 53 static SessionModelAssociator* GetModelAssociator(content::WebUI* web_ui); 54 55 private: 56 // Used to register ForeignSessionHandler for notifications. 57 void Init(); 58 59 // Determines how ForeignSessionHandler will interact with the new tab page. 60 virtual void Observe(int type, 61 const content::NotificationSource& source, 62 const content::NotificationDetails& details) OVERRIDE; 63 64 // Returns true if tab sync is enabled for this profile, otherwise false. 65 bool IsTabSyncEnabled(); 66 67 // Returns a string used to show the user when a session was last modified. 68 string16 FormatSessionTime(const base::Time& time); 69 70 // Determines which session is to be opened, and then calls 71 // OpenForeignSession, to begin the process of opening a new browser window. 72 // This is a javascript callback handler. 73 void HandleOpenForeignSession(const ListValue* args); 74 75 // Determines whether foreign sessions should be obtained from the sync model. 76 // This is a javascript callback handler, and it is also called when the sync 77 // model has changed and the new tab page needs to reflect the changes. 78 void HandleGetForeignSessions(const ListValue* args); 79 80 // Delete a foreign session. This will remove it from the list of foreign 81 // sessions on all devices. It will reappear if the session is re-activated 82 // on the original device. 83 // This is a javascript callback handler. 84 void HandleDeleteForeignSession(const ListValue* args); 85 86 void HandleSetForeignSessionCollapsed(const ListValue* args); 87 88 // Helper method to create JSON compatible objects from Session objects. 89 bool SessionWindowToValue(const SessionWindow& window, 90 DictionaryValue* dictionary); 91 92 // The Registrar used to register ForeignSessionHandler for notifications. 93 content::NotificationRegistrar registrar_; 94 95 DISALLOW_COPY_AND_ASSIGN(ForeignSessionHandler); 96 }; 97 98 } // namespace browser_sync 99 100 #endif // CHROME_BROWSER_UI_WEBUI_NTP_FOREIGN_SESSION_HANDLER_H_ 101
