/*
 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
 *
 * 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 ClipboardWin_h
#define ClipboardWin_h

#include "COMPtr.h"
#include "CachedResourceClient.h"
#include "Clipboard.h"

struct IDataObject;

namespace WebCore {

class CachedImage;
class IntPoint;
class WCDataObject;

// State available during IE's events for drag and drop and copy/paste
class ClipboardWin : public Clipboard, public CachedResourceClient {
public:
    static PassRefPtr<ClipboardWin> create(bool isForDragging, IDataObject* dataObject, ClipboardAccessPolicy policy)
    {
        return adoptRef(new ClipboardWin(isForDragging, dataObject, policy));
    }
    static PassRefPtr<ClipboardWin> create(bool isForDragging, WCDataObject* dataObject, ClipboardAccessPolicy policy)
    {
        return adoptRef(new ClipboardWin(isForDragging, dataObject, policy));
    }
    ~ClipboardWin();

    void clearData(const String& type);
    void clearAllData();
    String getData(const String& type, bool& success) const;
    bool setData(const String& type, const String& data);

    // extensions beyond IE's API
    virtual HashSet<String> types() const;
    virtual PassRefPtr<FileList> files() const;

    void setDragImage(CachedImage*, const IntPoint&);
    void setDragImageElement(Node*, const IntPoint&);

    virtual DragImageRef createDragImage(IntPoint& dragLoc) const;
    virtual void declareAndWriteDragImage(Element*, const KURL&, const String& title, Frame*);
    virtual void writeURL(const KURL&, const String&, Frame*);
    virtual void writeRange(Range*, Frame*);
    virtual void writePlainText(const String&);

    virtual bool hasData();

    COMPtr<IDataObject> dataObject() { return m_dataObject; }

    void setExternalDataObject(IDataObject *dataObject);

private:
    ClipboardWin(bool isForDragging, IDataObject*, ClipboardAccessPolicy);
    ClipboardWin(bool isForDragging, WCDataObject*, ClipboardAccessPolicy);

    void resetFromClipboard();
    void setDragImage(CachedImage*, Node*, const IntPoint&);

    COMPtr<IDataObject> m_dataObject;
    COMPtr<WCDataObject> m_writableDataObject;
    Frame* m_frame;
};

} // namespace WebCore

#endif // ClipboardWin_h
