NTP5: Starting implementation of a native menu for showing other device sessions.

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

 // Copyright (c) 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.h"
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sync/glue/session_model_associator.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 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.
   virtual void RegisterMessages() OVERRIDE;
 
   ForeignSessionHandler();
   virtual ~ForeignSessionHandler() {}
 
   static void RegisterUserPrefs(PrefService* prefs);
 
+  static void OpenForeignSession(content::WebUI* web_ui,
+                                 const std::string& session_string_value,
+                                 SessionID::id_type window_num,
+                                 SessionID::id_type tab_id,
+                                 const WindowOpenDisposition& disposition);
+
+  // Helper method to create JSON compatible objects from Session objects.
+  static bool SessionTabToValue(const SessionTab& tab,
+                                DictionaryValue* dictionary);
+
+  // Returns a pointer to the current session model associator or NULL.
+  static SessionModelAssociator* GetModelAssociator(content::WebUI* web_ui);
+
  private:
   // Used to register ForeignSessionHandler for notifications.
   void Init();
 
   // Determines how ForeignSessionHandler will interact with the new tab page.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // Returns a pointer to the current session model associator or NULL.
-  SessionModelAssociator* GetModelAssociator();
-
   // 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.
   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 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 ListValue* args);
 
   void HandleSetForeignSessionCollapsed(const ListValue* args);
 
   // Show a popup listing the devices's tabs.
   // This handler was introduced for NTP5.
   void HandleShowOtherDeviceSessionPopup(const ListValue* args);
 
-  // Helper methods to create JSON compatible objects from Session objects.
-  bool SessionTabToValue(const SessionTab& tab, DictionaryValue* dictionary);
+  // Helper method to create JSON compatible objects from Session objects.
   bool SessionWindowToValue(const SessionWindow& window,
                             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_