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// Copyright (c) 2011 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_AURA_SHELL_TOOLTIP_CONTROLLER_H_
#define UI_AURA_SHELL_TOOLTIP_CONTROLLER_H_
#pragma once
#include "base/memory/scoped_ptr.h"
#include "base/string16.h"
#include "base/timer.h"
#include "ui/aura/client/tooltip_client.h"
#include "ui/aura/event_filter.h"
#include "ui/aura/window_observer.h"
#include "ui/aura_shell/aura_shell_export.h"
#include "ui/gfx/point.h"
namespace aura {
class KeyEvent;
class MouseEvent;
class TouchEvent;
class Window;
}
namespace aura_shell {
namespace internal {
// TooltipController provides tooltip functionality for aura shell.
class AURA_SHELL_EXPORT TooltipController : public aura::client::TooltipClient,
public aura::EventFilter,
public aura::WindowObserver {
public:
TooltipController();
virtual ~TooltipController();
// Overridden from aura::client::TooltipClient.
void UpdateTooltip(aura::Window* target);
// Overridden from aura::EventFilter.
virtual bool PreHandleKeyEvent(aura::Window* target,
aura::KeyEvent* event) OVERRIDE;
virtual bool PreHandleMouseEvent(aura::Window* target,
aura::MouseEvent* event) OVERRIDE;
virtual ui::TouchStatus PreHandleTouchEvent(aura::Window* target,
aura::TouchEvent* event) OVERRIDE;
// Overridden from aura::WindowObserver.
virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
private:
class Tooltip;
void TooltipTimerFired();
// Updates the tooltip if required (if there is any change in the tooltip
// text or the aura::Window.
void UpdateIfRequired();
aura::Window* tooltip_window_;
string16 tooltip_text_;
scoped_ptr<Tooltip> tooltip_;
base::RepeatingTimer<TooltipController> tooltip_timer_;
gfx::Point curr_mouse_loc_;
DISALLOW_COPY_AND_ASSIGN(TooltipController);
};
} // namespace internal
} // namespace aura_shell
#endif // UI_AURA_SHELL_TOOLTIP_CONTROLLER_H_
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