blob: 3453fa96cb72e236bfe63db984bbafe44011d44c [file] [log] [blame]
// Copyright 2014 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.
#include <vector>
#include "athena/athena_export.h"
namespace aura {
class Window;
namespace athena {
class Activity;
class ActivityManagerObserver;
using ActivityList = std::vector<Activity*>;
// Manages a set of activities.
class ATHENA_EXPORT ActivityManager {
static ActivityManager* Create();
static ActivityManager* Get();
static void Shutdown();
virtual ~ActivityManager() {}
// Adds/Removes an activity. ActivityManager owns the activities.
virtual void AddActivity(Activity* activity) = 0;
virtual void RemoveActivity(Activity* activity) = 0;
// Returns a list of activities, sorted in their activation order (the most
// recently used activity is at the front of the returned list).
virtual const ActivityList& GetActivityList() = 0;
// Returns the activity that has a |window| as toplevel window, or
// nullptr if such activity does not exist.
virtual Activity* GetActivityForWindow(aura::Window* window) = 0;
virtual void AddObserver(ActivityManagerObserver* observer) = 0;
virtual void RemoveObserver(ActivityManagerObserver* observer) = 0;
} // namespace athena