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
40namespace WebCore {
41
42using namespace HTMLNames;
43
44ReplaceNodeWithSpanCommand::ReplaceNodeWithSpanCommand(PassRefPtr<HTMLElement> element)
45    : SimpleEditCommand(element->document())
46    , m_elementToReplace(element)
47{
48    ASSERT(m_elementToReplace);
49}
50
51static 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
72void 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
81void ReplaceNodeWithSpanCommand::doUnapply()
82{
83    if (!m_spanElement->inDocument())
84        return;
85    swapInNodePreservingAttributesAndChildren(m_elementToReplace.get(), m_spanElement.get());
86}
87
88} // namespace WebCore
89