DragState.h 2.08 KB
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/*
 * Copyright (C) 2011 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

#ifndef DragState_h
#define DragState_h

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#include "DragActions.h"
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#include <wtf/Forward.h>
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#include <wtf/Noncopyable.h>
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#include <wtf/RefPtr.h>

namespace WebCore {

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class Clipboard;
class Node;

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struct DragState {
    WTF_MAKE_NONCOPYABLE(DragState);
    WTF_MAKE_FAST_ALLOCATED;
public:
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    enum EventDispatchPolicy {
        DoNotDispatchEvents,
        DispatchEvents,
    };
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    DragState() { }
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    bool shouldDispatchEvents() const { return m_eventDispatchPolicy == DispatchEvents; }
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    RefPtr<Node> m_dragSrc; // element that may be a drag source, for the current mouse gesture
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    EventDispatchPolicy m_eventDispatchPolicy;
    DragSourceAction m_dragType;
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    RefPtr<Clipboard> m_dragClipboard; // used on only the source side of dragging
};

} // namespace WebCore

#endif // DragState_h