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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_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_
#define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_
#include <X11/Xlib.h>
// Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
#undef RootWindow
#include "base/message_loop/message_loop.h"
#include "ui/aura/env_observer.h"
#include "ui/base/x/x11_atom_cache.h"
#include "ui/gfx/x/x11_types.h"
#include "ui/views/views_export.h"
template <typename T> struct DefaultSingletonTraits;
namespace views {
// A singleton that owns global objects related to the desktop and listens for
// X11 events on the X11 root window. Destroys itself when aura::Env is
// deleted.
class VIEWS_EXPORT X11DesktopHandler : public base::MessageLoop::Dispatcher,
public aura::EnvObserver {
public:
// Returns the singleton handler.
static X11DesktopHandler* get();
// Sends a request to the window manager to activate |window|.
void ActivateWindow(::Window window);
// Checks if the current active window is |window|.
bool IsActiveWindow(::Window window) const;
// Overridden from MessageLoop::Dispatcher:
virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
// Overridden from aura::EnvObserver:
virtual void OnWindowInitialized(aura::Window* window) OVERRIDE;
virtual void OnWillDestroyEnv() OVERRIDE;
private:
explicit X11DesktopHandler();
virtual ~X11DesktopHandler();
// Handles changes in activation.
void OnActiveWindowChanged(::Window window);
// The display and the native X window hosting the root window.
XDisplay* xdisplay_;
// The native root window.
::Window x_root_window_;
// The activated window.
::Window current_window_;
ui::X11AtomCache atom_cache_;
DISALLOW_COPY_AND_ASSIGN(X11DesktopHandler);
};
} // namespace views
#endif // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_
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