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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_CLIENT_DRAG_DROP_CLIENT_H_
#define UI_AURA_CLIENT_DRAG_DROP_CLIENT_H_
#pragma once
#include "ui/aura/aura_export.h"
#include "ui/aura/event.h"
namespace ui {
class OSExchangeData;
}
namespace aura {
class Window;
namespace client {
// An interface implemented by an object that controls a drag and drop session.
class AURA_EXPORT DragDropClient {
public:
virtual ~DragDropClient() {}
// Initiates a drag and drop session. Returns the drag operation that was
// applied at the end of the drag drop session.
virtual int StartDragAndDrop(const ui::OSExchangeData& data,
int operation) = 0;
// Called when mouse is dragged during a drag and drop.
virtual void DragUpdate(aura::Window* target, const MouseEvent& event) = 0;
// Called when mouse is released during a drag and drop.
virtual void Drop(aura::Window* target, const MouseEvent& event) = 0;
// Called when a drag and drop session is cancelled.
virtual void DragCancel() = 0;
// Returns true if a drag and drop session is in progress.
virtual bool IsDragDropInProgress() = 0;
};
AURA_EXPORT void SetDragDropClient(DragDropClient* client);
AURA_EXPORT DragDropClient* GetDragDropClient();
} // namespace client
} // namespace aura
#endif // UI_AURA_CLIENT_DRAG_DROP_CLIENT_H_
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