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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 CONTENT_PUBLIC_BROWSER_WEB_DRAG_DEST_DELEGATE_H_
#define CONTENT_PUBLIC_BROWSER_WEB_DRAG_DEST_DELEGATE_H_
#include "base/strings/string16.h"
class GURL;
namespace ui {
class OSExchangeData;
}
namespace content {
class WebContents;
struct DropData;
// An optional delegate that listens for drags of bookmark data.
class WebDragDestDelegate {
public:
// Announces that a drag has started. It's valid that a drag starts, along
// with over/enter/leave/drop notifications without receiving any bookmark
// data.
virtual void DragInitialize(WebContents* contents) = 0;
// Notifications of drag progression.
virtual void OnDragOver() = 0;
virtual void OnDragEnter() = 0;
virtual void OnDrop() = 0;
// This should also clear any state kept about this drag.
virtual void OnDragLeave() = 0;
#if defined(USE_AURA)
// Called at the start of every drag to supply the data associated with the
// drag.
virtual void OnReceiveDragData(const ui::OSExchangeData& data) = 0;
#endif // USE_AURA
virtual ~WebDragDestDelegate() {}
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_WEB_DRAG_DEST_DELEGATE_H_
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