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 "MergeIdenticalElementsCommand.h"
28
29 #include "Element.h"
30
31 namespace WebCore {
32
MergeIdenticalElementsCommand(PassRefPtr<Element> first,PassRefPtr<Element> second)33 MergeIdenticalElementsCommand::MergeIdenticalElementsCommand(PassRefPtr<Element> first, PassRefPtr<Element> second)
34 : SimpleEditCommand(first->document())
35 , m_element1(first)
36 , m_element2(second)
37 {
38 ASSERT(m_element1);
39 ASSERT(m_element2);
40 ASSERT(m_element1->nextSibling() == m_element2);
41 }
42
doApply()43 void MergeIdenticalElementsCommand::doApply()
44 {
45 if (m_element1->nextSibling() != m_element2 || !m_element1->rendererIsEditable() || !m_element2->rendererIsEditable())
46 return;
47
48 m_atChild = m_element2->firstChild();
49
50 ExceptionCode ec = 0;
51
52 Vector<RefPtr<Node> > children;
53 for (Node* child = m_element1->firstChild(); child; child = child->nextSibling())
54 children.append(child);
55
56 size_t size = children.size();
57 for (size_t i = 0; i < size; ++i)
58 m_element2->insertBefore(children[i].release(), m_atChild.get(), ec);
59
60 m_element1->remove(ec);
61 }
62
doUnapply()63 void MergeIdenticalElementsCommand::doUnapply()
64 {
65 ASSERT(m_element1);
66 ASSERT(m_element2);
67
68 RefPtr<Node> atChild = m_atChild.release();
69
70 ContainerNode* parent = m_element2->parentNode();
71 if (!parent || !parent->rendererIsEditable())
72 return;
73
74 ExceptionCode ec = 0;
75
76 parent->insertBefore(m_element1.get(), m_element2.get(), ec);
77 if (ec)
78 return;
79
80 Vector<RefPtr<Node> > children;
81 for (Node* child = m_element2->firstChild(); child && child != atChild; child = child->nextSibling())
82 children.append(child);
83
84 size_t size = children.size();
85 for (size_t i = 0; i < size; ++i)
86 m_element1->appendChild(children[i].release(), ec);
87 }
88
89 } // namespace WebCore
90