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_FOREIGN_SESSION_HANDLER_H_
6#define CHROME_BROWSER_UI_WEBUI_FOREIGN_SESSION_HANDLER_H_
7#pragma once
8
9#include <vector>
10
11#include "chrome/browser/sessions/session_service.h"
12#include "chrome/browser/sync/glue/session_model_associator.h"
13#include "content/browser/webui/web_ui.h"
14#include "content/common/notification_observer.h"
15#include "content/common/notification_registrar.h"
16
17namespace browser_sync {
18
19class ForeignSessionHandler : public WebUIMessageHandler,
20                              public NotificationObserver {
21 public:
22  // WebUIMessageHandler implementation.
23  virtual void RegisterMessages();
24
25  ForeignSessionHandler();
26  virtual ~ForeignSessionHandler() {}
27
28 private:
29  // Used to register ForeignSessionHandler for notifications.
30  void Init();
31
32  // Determines how ForeignSessionHandler will interact with the new tab page.
33  virtual void Observe(NotificationType type,
34                       const NotificationSource& source,
35                       const NotificationDetails& details);
36
37  // Returns a pointer to the current session model associator or NULL.
38  SessionModelAssociator* GetModelAssociator();
39
40  // Determines which session is to be opened, and then calls
41  // OpenForeignSession, to begin the process of opening a new browser window.
42  // This is a javascript callback handler.
43  void HandleOpenForeignSession(const ListValue* args);
44
45  // Determines whether foreign sessions should be obtained from the sync model.
46  // This is a javascript callback handler, and it is also called when the sync
47  // model has changed and the new tab page needs to reflect the changes.
48  void HandleGetForeignSessions(const ListValue* args);
49
50  // Helper methods to create JSON compatible objects from Session objects.
51  bool SessionTabToValue(const SessionTab& tab, DictionaryValue* dictionary);
52  bool SessionWindowToValue(const SessionWindow& window,
53                            DictionaryValue* dictionary);
54
55  // The Registrar used to register ForeignSessionHandler for notifications.
56  NotificationRegistrar registrar_;
57
58  DISALLOW_COPY_AND_ASSIGN(ForeignSessionHandler);
59};
60
61}  // namespace browser_sync
62
63#endif  // CHROME_BROWSER_UI_WEBUI_FOREIGN_SESSION_HANDLER_H_
64