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      1 /*
      2  * Copyright (C) 2006, 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 IndentOutdentCommand_h
     27 #define IndentOutdentCommand_h
     28 
     29 #include "CompositeEditCommand.h"
     30 
     31 namespace WebCore {
     32 
     33 class IndentOutdentCommand : public CompositeEditCommand {
     34 public:
     35     enum EIndentType { Indent, Outdent };
     36     static PassRefPtr<IndentOutdentCommand> create(Document* document, EIndentType type, int marginInPixels = 0)
     37     {
     38         return adoptRef(new IndentOutdentCommand(document, type, marginInPixels));
     39     }
     40 
     41     virtual bool preservesTypingStyle() const { return true; }
     42 
     43 private:
     44     IndentOutdentCommand(Document*, EIndentType, int marginInPixels);
     45 
     46     virtual void doApply();
     47     virtual EditAction editingAction() const { return m_typeOfAction == Indent ? EditActionIndent : EditActionOutdent; }
     48 
     49     void indentRegion(const VisiblePosition&, const VisiblePosition&);
     50     void outdentRegion(const VisiblePosition&, const VisiblePosition&);
     51     void outdentParagraph();
     52     bool tryIndentingAsListItem(const VisiblePosition&);
     53     void indentIntoBlockquote(const VisiblePosition&, const VisiblePosition&, RefPtr<Element>&);
     54 
     55     EIndentType m_typeOfAction;
     56     int m_marginInPixels;
     57 };
     58 
     59 } // namespace WebCore
     60 
     61 #endif // IndentOutdentCommand_h
     62