athena/activity/activity_manager_impl.h

   1 // Copyright 2014 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 #include "athena/activity/public/activity_manager.h"
   6
   7 #include <vector>
   8
   9 #include "base/macros.h"
  10 #include "base/observer_list.h"
  11 #include "ui/aura/window_observer.h"
  12 #include "ui/wm/public/activation_change_observer.h"
  13
  14 namespace athena {
  15
  16 class ActivityManagerObserver;
  17
  18 class ActivityManagerImpl : public ActivityManager,
  19                             public aura::WindowObserver,
  20                             public aura::client::ActivationChangeObserver {
  21  public:
  22   ActivityManagerImpl();
  23   ~ActivityManagerImpl() override;
  24
  25   int num_activities() const { return activities_.size(); }
  26
  27   // ActivityManager:
  28   void AddActivity(Activity* activity) override;
  29   void RemoveActivity(Activity* activity) override;
  30   const ActivityList& GetActivityList() override;
  31   Activity* GetActivityForWindow(aura::Window* window) override;
  32   void AddObserver(ActivityManagerObserver* observer) override;
  33   void RemoveObserver(ActivityManagerObserver* observer) override;
  34
  35  private:
  36   // aura::WindowObserver:
  37   void OnWindowDestroying(aura::Window* window) override;
  38
  39   // aura::client::ActivationChangeObserver:
  40   void OnWindowActivated(aura::Window* gained_active,
  41                          aura::Window* lost_active) override;
  42
  43   std::vector<Activity*> activities_;
  44
  45   ObserverList<ActivityManagerObserver> observers_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(ActivityManagerImpl);
  48 };
  49
  50 }  // namespace athena