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// Copyright 2013 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 ASH_SHELF_SHELF_BUTTON_HOST_H_
#define ASH_SHELF_SHELF_BUTTON_HOST_H_
#include "ash/ash_export.h"
#include "base/strings/string16.h"
namespace ui {
class LocatedEvent;
}
namespace views {
class View;
}
namespace ash {
namespace internal {
// The shelf buttons communicate back to the host by way of this interface.
// This interface is used to enable reordering the items on the shelf.
class ASH_EXPORT ShelfButtonHost {
public:
enum Pointer {
NONE,
DRAG_AND_DROP,
MOUSE,
TOUCH,
};
// Invoked when a pointer device is pressed on a view.
virtual void PointerPressedOnButton(views::View* view,
Pointer pointer,
const ui::LocatedEvent& event) = 0;
// Invoked when a pointer device is dragged over a view.
virtual void PointerDraggedOnButton(views::View* view,
Pointer pointer,
const ui::LocatedEvent& event) = 0;
// Invoked either if a pointer device is released or mouse capture canceled.
virtual void PointerReleasedOnButton(views::View* view,
Pointer pointer,
bool canceled) = 0;
// Invoked when the mouse moves on the item.
virtual void MouseMovedOverButton(views::View* view) = 0;
// Invoked when the mouse enters the item.
virtual void MouseEnteredButton(views::View* view) = 0;
// Invoked when the mouse exits the item.
virtual void MouseExitedButton(views::View* view) = 0;
// Invoked to get the accessible name of the item.
virtual base::string16 GetAccessibleName(const views::View* view) = 0;
protected:
virtual ~ShelfButtonHost() {}
};
} // namespace internal
} // namespace ash
#endif // ASH_SHELF_SHELF_BUTTON_HOST_H_
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