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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 VIEWS_WIDGET_WINDOW_MANAGER_H_
#define VIEWS_WIDGET_WINDOW_MANAGER_H_
#pragma once
#include "base/basictypes.h"
#include "ui/base/events.h"
#include "views/views_export.h"
namespace gfx {
class Point;
}
namespace views {
class KeyEvent;
class MouseEvent;
class TouchEvent;
class Widget;
// A interface to WindowManager.
class VIEWS_EXPORT WindowManager {
public:
WindowManager();
virtual ~WindowManager();
// Starts moving window given by |widget|. |point| represents the
// initial location of the mouse pointer.
virtual void StartMoveDrag(Widget* widget, const gfx::Point& point) = 0;
// Starts resizing window give by |widget|. |point| represents the
// initial location of the mouse pointer and |hittest_code| represents
// the edge of the window a user selected to resize the window. See
// views/window/hit_test.h for the hittest_code definition.
virtual void StartResizeDrag(
Widget* widget, const gfx::Point& point, int hittest_code) = 0;
// Sets mouse capture on |widget|. Returns false if other widget
// already has mouse capture.
virtual bool SetMouseCapture(Widget* widget) = 0;
// Releases the mouse capture on |widget|. Returns false if |widget|
// haven't capture the mouse.
virtual bool ReleaseMouseCapture(Widget* widget) = 0;
// Checks if the |widget| has mouse capture.
virtual bool HasMouseCapture(const Widget* widget) const = 0;
// WindowManager handles mouse event first. It may reisze/move window,
// or send the event to widget that has mouse capture.
virtual bool HandleKeyEvent(Widget* widget, const KeyEvent& event) = 0;
// WindowManager handles mouse event first. It may resize/move window,
// or send the event to widget that has mouse capture.
virtual bool HandleMouseEvent(Widget* widget, const MouseEvent& event) = 0;
// WindowManager handles touch event first. It is currently used only to
// activate windows. But it can also be used to move/resize windows.
virtual ui::TouchStatus HandleTouchEvent(Widget* widget,
const TouchEvent& event) = 0;
// Register widget to the window manager.
virtual void Register(Widget* widget) = 0;
// Installs window manager.
static void Install(WindowManager* wm);
// Returns installed WindowManager.
static WindowManager* Get();
private:
DISALLOW_COPY_AND_ASSIGN(WindowManager);
};
} // namespace views
#endif // VIEWS_WIDGET_WINDOW_MANAGER_H_
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