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      1 /*
      2  * Copyright (c) 2009 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "ReplaceNodeWithSpanCommand.h"
     33 
     34 #include "htmlediting.h"
     35 #include "HTMLElement.h"
     36 #include "HTMLNames.h"
     37 
     38 #include <wtf/Assertions.h>
     39 
     40 namespace WebCore {
     41 
     42 using namespace HTMLNames;
     43 
     44 ReplaceNodeWithSpanCommand::ReplaceNodeWithSpanCommand(PassRefPtr<HTMLElement> element)
     45     : SimpleEditCommand(element->document())
     46     , m_elementToReplace(element)
     47 {
     48     ASSERT(m_elementToReplace);
     49 }
     50 
     51 static void swapInNodePreservingAttributesAndChildren(HTMLElement* newNode, HTMLElement* nodeToReplace)
     52 {
     53     ASSERT(nodeToReplace->inDocument());
     54     ExceptionCode ec = 0;
     55     ContainerNode* parentNode = nodeToReplace->parentNode();
     56     parentNode->insertBefore(newNode, nodeToReplace, ec);
     57     ASSERT(!ec);
     58 
     59     RefPtr<Node> nextChild;
     60     for (Node* child = nodeToReplace->firstChild(); child; child = nextChild.get()) {
     61         nextChild = child->nextSibling();
     62         newNode->appendChild(child, ec);
     63         ASSERT(!ec);
     64     }
     65 
     66     newNode->attributes()->setAttributes(*nodeToReplace->attributes());
     67 
     68     parentNode->removeChild(nodeToReplace, ec);
     69     ASSERT(!ec);
     70 }
     71 
     72 void ReplaceNodeWithSpanCommand::doApply()
     73 {
     74     if (!m_elementToReplace->inDocument())
     75         return;
     76     if (!m_spanElement)
     77         m_spanElement = createHTMLElement(m_elementToReplace->document(), spanTag);
     78     swapInNodePreservingAttributesAndChildren(m_spanElement.get(), m_elementToReplace.get());
     79 }
     80 
     81 void ReplaceNodeWithSpanCommand::doUnapply()
     82 {
     83     if (!m_spanElement->inDocument())
     84         return;
     85     swapInNodePreservingAttributesAndChildren(m_elementToReplace.get(), m_spanElement.get());
     86 }
     87 
     88 } // namespace WebCore
     89