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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_COREWM_TOOLTIP_CONTROLLER_H_
#define UI_VIEWS_COREWM_TOOLTIP_CONTROLLER_H_
#include <map>
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
#include "base/timer/timer.h"
#include "ui/aura/window_observer.h"
#include "ui/events/event_handler.h"
#include "ui/gfx/point.h"
#include "ui/views/views_export.h"
#include "ui/wm/public/tooltip_client.h"
namespace aura {
class Window;
}
namespace views {
namespace corewm {
class Tooltip;
namespace test {
class TooltipControllerTestHelper;
} // namespace test
// TooltipController provides tooltip functionality for aura.
class VIEWS_EXPORT TooltipController : public aura::client::TooltipClient,
public ui::EventHandler,
public aura::WindowObserver {
public:
explicit TooltipController(scoped_ptr<Tooltip> tooltip);
virtual ~TooltipController();
// Overridden from aura::client::TooltipClient.
virtual void UpdateTooltip(aura::Window* target) OVERRIDE;
virtual void SetTooltipShownTimeout(aura::Window* target,
int timeout_in_ms) OVERRIDE;
virtual void SetTooltipsEnabled(bool enable) OVERRIDE;
// Overridden from ui::EventHandler.
virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
virtual void OnCancelMode(ui::CancelModeEvent* event) OVERRIDE;
// Overridden from aura::WindowObserver.
virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
const gfx::Point& mouse_location() const { return curr_mouse_loc_; }
private:
friend class test::TooltipControllerTestHelper;
void TooltipTimerFired();
void TooltipShownTimerFired();
// Updates the tooltip if required (if there is any change in the tooltip
// text, tooltip id or the aura::Window).
void UpdateIfRequired();
// Only used in tests.
bool IsTooltipVisible();
bool IsDragDropInProgress();
// Returns true if the cursor is visible.
bool IsCursorVisible();
int GetTooltipShownTimeout();
// Sets tooltip window to |target| if it is different from existing window.
// Calls RemoveObserver on the existing window if it is not NULL.
// Calls AddObserver on the new window if it is not NULL.
void SetTooltipWindow(aura::Window* target);
aura::Window* tooltip_window_;
base::string16 tooltip_text_;
const void* tooltip_id_;
// These fields are for tracking state when the user presses a mouse button.
aura::Window* tooltip_window_at_mouse_press_;
base::string16 tooltip_text_at_mouse_press_;
scoped_ptr<Tooltip> tooltip_;
base::RepeatingTimer<TooltipController> tooltip_timer_;
// Timer to timeout the life of an on-screen tooltip. We hide the tooltip when
// this timer fires.
base::OneShotTimer<TooltipController> tooltip_shown_timer_;
// Location of the last event in |tooltip_window_|'s coordinates.
gfx::Point curr_mouse_loc_;
bool tooltips_enabled_;
std::map<aura::Window*, int> tooltip_shown_timeout_map_;
DISALLOW_COPY_AND_ASSIGN(TooltipController);
};
} // namespace corewm
} // namespace views
#endif // UI_VIEWS_COREWM_TOOLTIP_CONTROLLER_H_
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