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      1 /*
      2  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef ClipboardQt_h
     27 #define ClipboardQt_h
     28 
     29 #include "CachedResourceClient.h"
     30 #include "Clipboard.h"
     31 
     32 QT_BEGIN_NAMESPACE
     33 class QMimeData;
     34 QT_END_NAMESPACE
     35 
     36 namespace WebCore {
     37 
     38 class CachedImage;
     39 
     40 // State available during IE's events for drag and drop and copy/paste
     41 class ClipboardQt : public Clipboard, public CachedResourceClient {
     42     WTF_MAKE_FAST_ALLOCATED;
     43 public:
     44     static PassRefPtr<ClipboardQt> create(ClipboardAccessPolicy policy, const QMimeData* readableClipboard)
     45     {
     46         return adoptRef(new ClipboardQt(policy, readableClipboard));
     47     }
     48     static PassRefPtr<ClipboardQt> create(ClipboardAccessPolicy policy, ClipboardType clipboardType = CopyAndPaste)
     49     {
     50         return adoptRef(new ClipboardQt(policy, clipboardType));
     51     }
     52     virtual ~ClipboardQt();
     53 
     54     void clearData(const String& type);
     55     void clearAllData();
     56     String getData(const String& type, bool& success) const;
     57     bool setData(const String& type, const String& data);
     58 
     59     // extensions beyond IE's API
     60     virtual HashSet<String> types() const;
     61     virtual PassRefPtr<FileList> files() const;
     62 
     63     void setDragImage(CachedImage*, const IntPoint&);
     64     void setDragImageElement(Node*, const IntPoint&);
     65 
     66     virtual DragImageRef createDragImage(IntPoint& dragLoc) const;
     67     virtual void declareAndWriteDragImage(Element*, const KURL&, const String& title, Frame*);
     68     virtual void writeURL(const KURL&, const String&, Frame*);
     69     virtual void writeRange(Range*, Frame*);
     70     virtual void writePlainText(const String&);
     71 
     72     virtual bool hasData();
     73 
     74     QMimeData* clipboardData() const { return m_writableData; }
     75     void invalidateWritableData() { m_writableData = 0; }
     76 
     77 private:
     78     ClipboardQt(ClipboardAccessPolicy, const QMimeData* readableClipboard);
     79 
     80     // Clipboard is writable so it will create its own QMimeData object
     81     ClipboardQt(ClipboardAccessPolicy, ClipboardType);
     82 
     83     void setDragImage(CachedImage*, Node*, const IntPoint& loc);
     84 
     85     const QMimeData* m_readableData;
     86     QMimeData* m_writableData;
     87 };
     88 }
     89 
     90 #endif // ClipboardQt_h
     91