WebCore/editing/RemoveCSSPropertyCommand.cpp

   1 /*
   2  * Copyright (C) 2005, 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 #include "config.h"
  27 #include "RemoveCSSPropertyCommand.h"
  28
  29 #include "CSSMutableStyleDeclaration.h"
  30 #include <wtf/Assertions.h>
  31
  32 namespace WebCore {
  33
  34 RemoveCSSPropertyCommand::RemoveCSSPropertyCommand(Document* document, CSSStyleDeclaration* decl, int property)
  35     : SimpleEditCommand(document)
  36     , m_decl(decl->makeMutable())
  37     , m_property(property)
  38     , m_important(false)
  39 {
  40     ASSERT(m_decl);
  41 }
  42
  43 void RemoveCSSPropertyCommand::doApply()
  44 {
  45     ASSERT(m_decl);
  46
  47     m_oldValue = m_decl->getPropertyValue(m_property);
  48     ASSERT(!m_oldValue.isNull());
  49
  50     m_important = m_decl->getPropertyPriority(m_property);
  51     m_decl->removeProperty(m_property);
  52 }
  53
  54 void RemoveCSSPropertyCommand::doUnapply()
  55 {
  56     ASSERT(m_decl);
  57     ASSERT(!m_oldValue.isNull());
  58
  59     m_decl->setProperty(m_property, m_oldValue, m_important);
  60 }
  61
  62 } // namespace WebCore