1// Copyright 2013 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_TASK_MANAGER_PANEL_RESOURCE_PROVIDER_H_
6#define CHROME_BROWSER_TASK_MANAGER_PANEL_RESOURCE_PROVIDER_H_
7
8#include <map>
9
10#include "base/basictypes.h"
11#include "base/strings/string16.h"
12#include "chrome/browser/task_manager/resource_provider.h"
13#include "content/public/browser/notification_observer.h"
14#include "content/public/browser/notification_registrar.h"
15#include "ui/gfx/image/image_skia.h"
16
17class Panel;
18class TaskManager;
19
20namespace task_manager {
21
22class PanelResource;
23
24class PanelResourceProvider : public ResourceProvider,
25                              public content::NotificationObserver {
26 public:
27  explicit PanelResourceProvider(TaskManager* task_manager);
28
29  // ResourceProvider methods:
30  virtual Resource* GetResource(int origin_pid,
31                                int render_process_host_id,
32                                int routing_id) OVERRIDE;
33  virtual void StartUpdating() OVERRIDE;
34  virtual void StopUpdating() OVERRIDE;
35
36  // content::NotificationObserver method:
37  virtual void Observe(int type,
38                       const content::NotificationSource& source,
39                       const content::NotificationDetails& details) OVERRIDE;
40
41 private:
42  virtual ~PanelResourceProvider();
43
44  void Add(Panel* panel);
45  void Remove(Panel* panel);
46
47  // Whether we are currently reporting to the task manager. Used to ignore
48  // notifications sent after StopUpdating().
49  bool updating_;
50
51  TaskManager* task_manager_;
52
53  // Maps the actual resources (the Panels) to the Task Manager resources.
54  typedef std::map<Panel*, PanelResource*> PanelResourceMap;
55  PanelResourceMap resources_;
56
57  // A scoped container for notification registries.
58  content::NotificationRegistrar registrar_;
59
60  DISALLOW_COPY_AND_ASSIGN(PanelResourceProvider);
61};
62
63}  // namespace task_manager
64
65#endif  // CHROME_BROWSER_TASK_MANAGER_PANEL_RESOURCE_PROVIDER_H_
66