| // Copyright (c) 2012 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 "ui/base/x/work_area_watcher_x.h" |
| |
| #include "base/memory/singleton.h" |
| #include "ui/base/work_area_watcher_observer.h" |
| #include "ui/base/x/root_window_property_watcher_x.h" |
| #include "ui/base/x/x11_util.h" |
| |
| namespace ui { |
| |
| static const char* const kNetWorkArea = "_NET_WORKAREA"; |
| |
| // static |
| WorkAreaWatcherX* WorkAreaWatcherX::GetInstance() { |
| return Singleton<WorkAreaWatcherX>::get(); |
| } |
| |
| // static |
| void WorkAreaWatcherX::AddObserver(WorkAreaWatcherObserver* observer) { |
| // Ensure that RootWindowPropertyWatcherX exists. |
| internal::RootWindowPropertyWatcherX::GetInstance(); |
| GetInstance()->observers_.AddObserver(observer); |
| } |
| |
| // static |
| void WorkAreaWatcherX::RemoveObserver(WorkAreaWatcherObserver* observer) { |
| GetInstance()->observers_.RemoveObserver(observer); |
| } |
| |
| // static |
| void WorkAreaWatcherX::Notify() { |
| GetInstance()->NotifyWorkAreaChanged(); |
| } |
| |
| // static |
| Atom WorkAreaWatcherX::GetPropertyAtom() { |
| return GetAtom(kNetWorkArea); |
| } |
| |
| WorkAreaWatcherX::WorkAreaWatcherX() { |
| } |
| |
| WorkAreaWatcherX::~WorkAreaWatcherX() { |
| } |
| |
| void WorkAreaWatcherX::NotifyWorkAreaChanged() { |
| FOR_EACH_OBSERVER(WorkAreaWatcherObserver, observers_, WorkAreaChanged()); |
| } |
| |
| } // namespace ui |