WebCore/IndentOutdentCommand.h

   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();
  50     void outdentRegion();
  51     void outdentParagraph();
  52     PassRefPtr<Element> prepareBlockquoteLevelForInsertion(VisiblePosition&, RefPtr<Element>&);
  53
  54     EIndentType m_typeOfAction;
  55     int m_marginInPixels;
  56 };
  57
  58 } // namespace WebCore
  59
  60 #endif // IndentOutdentCommand_h