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// 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.
#ifndef UI_BASE_X_ROOT_WINDOW_PROPERTY_WATCHER_X_H_
#define UI_BASE_X_ROOT_WINDOW_PROPERTY_WATCHER_X_H_
#include <gdk/gdk.h>
#include "base/basictypes.h"
#include "ui/base/gtk/gtk_signal.h"
#include "ui/base/ui_export.h"
template <typename T> struct DefaultSingletonTraits;
namespace ui {
namespace internal {
// This class keeps track of changes to properties on the root window. This is
// not to be used directly. Implement a watcher for the specific property you're
// interested in.
class RootWindowPropertyWatcherX {
public:
static RootWindowPropertyWatcherX* GetInstance();
private:
friend struct DefaultSingletonTraits<RootWindowPropertyWatcherX>;
RootWindowPropertyWatcherX();
~RootWindowPropertyWatcherX();
// Callback for PropertyChange XEvents.
CHROMEG_CALLBACK_1(RootWindowPropertyWatcherX, GdkFilterReturn,
OnWindowXEvent, GdkXEvent*, GdkEvent*);
DISALLOW_COPY_AND_ASSIGN(RootWindowPropertyWatcherX);
};
} // namespace internal
} // namespace ui
#endif // UI_BASE_X_ROOT_WINDOW_PROPERTY_WATCHER_X_H_
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