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// Copyright (c) 2010 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_CONTROLS_MENU_MENU_HOST_H_
#define VIEWS_CONTROLS_MENU_MENU_HOST_H_
#include "gfx/native_widget_types.h"
#include "gfx/rect.h"
namespace views {
class SubmenuView;
class View;
// SubmenuView uses a MenuHost to house the SubmenuView. MenuHost typically
// extends the native Widget type, but is defined here for clarity of what
// methods SubmenuView uses.
//
// SubmenuView owns the MenuHost. When SubmenuView is done with the MenuHost
// |DestroyMenuHost| is invoked. The one exception to this is if the native
// OS destroys the widget out from under us, in which case |MenuHostDestroyed|
// is invoked back on the SubmenuView and the SubmenuView then drops references
// to the MenuHost.
class MenuHost {
public:
// Creates the platform specific MenuHost. Ownership passes to the caller.
static MenuHost* Create(SubmenuView* submenu_view);
// Initializes and shows the MenuHost.
virtual void Init(gfx::NativeWindow parent,
const gfx::Rect& bounds,
View* contents_view,
bool do_capture) = 0;
// Returns true if the menu host is visible.
virtual bool IsMenuHostVisible() = 0;
// Shows the menu host. If |do_capture| is true the menu host should do a
// mouse grab.
virtual void ShowMenuHost(bool do_capture) = 0;
// Hides the menu host.
virtual void HideMenuHost() = 0;
// Destroys and deletes the menu host.
virtual void DestroyMenuHost() = 0;
// Sets the bounds of the menu host.
virtual void SetMenuHostBounds(const gfx::Rect& bounds) = 0;
// Releases a mouse grab installed by |ShowMenuHost|.
virtual void ReleaseMenuHostCapture() = 0;
// Returns the native window of the MenuHost.
virtual gfx::NativeWindow GetMenuHostWindow() = 0;
protected:
virtual ~MenuHost() {}
};
} // namespace views
#endif // VIEWS_CONTROLS_MENU_MENU_HOST_H_
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