NTP Zombie Code Slayer III, The Saga Continues: Foreign Sessions

chrome/browser/ui/webui/ntp/foreign_session_handler.h

-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_UI_WEBUI_NTP_FOREIGN_SESSION_HANDLER_H_
-#define CHROME_BROWSER_UI_WEBUI_NTP_FOREIGN_SESSION_HANDLER_H_
-
-#include <vector>
-
-#include "base/time/time.h"
-#include "chrome/browser/sessions/session_service.h"
-#include "chrome/browser/sync/open_tabs_ui_delegate.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "content/public/browser/web_ui.h"
-#include "content/public/browser/web_ui_message_handler.h"
-
-namespace sessions {
-struct SessionTab;
-struct SessionWindow;
-}
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}
-
-namespace browser_sync {
-
-class ForeignSessionHandler : public content::WebUIMessageHandler,
-                              public content::NotificationObserver {
- public:
-  // Invalid value, used to note that we don't have a tab or window number.
-  static const int kInvalidId = -1;
-
-  // WebUIMessageHandler implementation.
-  void RegisterMessages() override;
-
-  ForeignSessionHandler();
-  ~ForeignSessionHandler() override {}
-
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
-  static void OpenForeignSessionTab(content::WebUI* web_ui,
-                                    const std::string& session_string_value,
-                                    SessionID::id_type window_num,
-                                    SessionID::id_type tab_id,
-                                    const WindowOpenDisposition& disposition);
-
-  static void OpenForeignSessionWindows(content::WebUI* web_ui,
-                                        const std::string& session_string_value,
-                                        SessionID::id_type window_num);
-
-  // Helper method to create JSON compatible objects from Session objects.
-  static bool SessionTabToValue(const ::sessions::SessionTab& tab,
-                                base::DictionaryValue* dictionary);
-
-  // Returns a pointer to the current session model associator or NULL.
-  static OpenTabsUIDelegate* GetOpenTabsUIDelegate(content::WebUI* web_ui);
-
- private:
-  // Used to register ForeignSessionHandler for notifications.
-  void Init();
-
-  // Determines how ForeignSessionHandler will interact with the new tab page.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
-  // Returns true if tab sync is enabled for this profile, otherwise false.
-  bool IsTabSyncEnabled();
-
-  // Returns a string used to show the user when a session was last modified.
-  base::string16 FormatSessionTime(const base::Time& time);
-
-  // Determines which session is to be opened, and then calls
-  // OpenForeignSession, to begin the process of opening a new browser window.
-  // This is a javascript callback handler.
-  void HandleOpenForeignSession(const base::ListValue* args);
-
-  // Determines whether foreign sessions should be obtained from the sync model.
-  // This is a javascript callback handler, and it is also called when the sync
-  // model has changed and the new tab page needs to reflect the changes.
-  void HandleGetForeignSessions(const base::ListValue* args);
-
-  // Delete a foreign session. This will remove it from the list of foreign
-  // sessions on all devices. It will reappear if the session is re-activated
-  // on the original device.
-  // This is a javascript callback handler.
-  void HandleDeleteForeignSession(const base::ListValue* args);
-
-  void HandleSetForeignSessionCollapsed(const base::ListValue* args);
-
-  // Helper method to create JSON compatible objects from Session objects.
-  bool SessionWindowToValue(const ::sessions::SessionWindow& window,
-                            base::DictionaryValue* dictionary);
-
-  // The Registrar used to register ForeignSessionHandler for notifications.
-  content::NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(ForeignSessionHandler);
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_UI_WEBUI_NTP_FOREIGN_SESSION_HANDLER_H_