chrome/browser/task_manager/panel_resource_provider.h

   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
  17 class Panel;
  18 class TaskManager;
  19
  20 namespace task_manager {
  21
  22 class PanelResource;
  23
  24 class 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 child_id,
  32                                 int route_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_