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 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 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 "SplitElementCommand.h"
28
29#include "Element.h"
30#include "HTMLNames.h"
31#include <wtf/Assertions.h>
32
33namespace WebCore {
34
35SplitElementCommand::SplitElementCommand(Ref<Element>&& element, Ref<Node>&& atChild)
36 : SimpleEditCommand(element->document())
37 , m_element2(WTFMove(element))
38 , m_atChild(WTFMove(atChild))
39{
40 ASSERT(m_atChild->parentNode() == m_element2.ptr());
41}
42
43void SplitElementCommand::executeApply()
44{
45 if (m_atChild->parentNode() != m_element2.ptr())
46 return;
47
48 Vector<Ref<Node>> children;
49 for (Node* node = m_element2->firstChild(); node != m_atChild.ptr(); node = node->nextSibling())
50 children.append(*node);
51
52 auto* parent = m_element2->parentNode();
53 if (!parent || !parent->hasEditableStyle())
54 return;
55 if (parent->insertBefore(*m_element1, m_element2.ptr()).hasException())
56 return;
57
58 // Delete id attribute from the second element because the same id cannot be used for more than one element
59 m_element2->removeAttribute(HTMLNames::idAttr);
60
61 for (auto& child : children)
62 m_element1->appendChild(child);
63}
64
65void SplitElementCommand::doApply()
66{
67 m_element1 = m_element2->cloneElementWithoutChildren(document());
68
69 executeApply();
70}
71
72void SplitElementCommand::doUnapply()
73{
74 if (!m_element1 || !m_element1->hasEditableStyle() || !m_element2->hasEditableStyle())
75 return;
76
77 Vector<Ref<Node>> children;
78 for (Node* node = m_element1->firstChild(); node; node = node->nextSibling())
79 children.append(*node);
80
81 RefPtr<Node> refChild = m_element2->firstChild();
82
83 for (auto& child : children)
84 m_element2->insertBefore(child, refChild.get());
85
86 // Recover the id attribute of the original element.
87 const AtomicString& id = m_element1->getIdAttribute();
88 if (!id.isNull())
89 m_element2->setIdAttribute(id);
90
91 m_element1->remove();
92}
93
94void SplitElementCommand::doReapply()
95{
96 if (!m_element1)
97 return;
98
99 executeApply();
100}
101
102#ifndef NDEBUG
103void SplitElementCommand::getNodesInCommand(HashSet<Node*>& nodes)
104{
105 addNodeAndDescendants(m_element1.get(), nodes);
106 addNodeAndDescendants(m_element2.ptr(), nodes);
107 addNodeAndDescendants(m_atChild.ptr(), nodes);
108}
109#endif
110
111} // namespace WebCore
112