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 "core/editing/SplitElementCommand.h"
28
29 #include "HTMLNames.h"
30 #include "bindings/v8/ExceptionState.h"
31 #include "bindings/v8/ExceptionStatePlaceholder.h"
32 #include "core/dom/Element.h"
33 #include "wtf/Assertions.h"
34
35 namespace WebCore {
36
SplitElementCommand(PassRefPtr<Element> element,PassRefPtr<Node> atChild)37 SplitElementCommand::SplitElementCommand(PassRefPtr<Element> element, PassRefPtr<Node> atChild)
38 : SimpleEditCommand(element->document())
39 , m_element2(element)
40 , m_atChild(atChild)
41 {
42 ASSERT(m_element2);
43 ASSERT(m_atChild);
44 ASSERT(m_atChild->parentNode() == m_element2);
45 }
46
executeApply()47 void SplitElementCommand::executeApply()
48 {
49 if (m_atChild->parentNode() != m_element2)
50 return;
51
52 Vector<RefPtr<Node> > children;
53 for (Node* node = m_element2->firstChild(); node != m_atChild; node = node->nextSibling())
54 children.append(node);
55
56 TrackExceptionState exceptionState;
57
58 ContainerNode* parent = m_element2->parentNode();
59 if (!parent || !parent->rendererIsEditable())
60 return;
61 parent->insertBefore(m_element1.get(), m_element2.get(), exceptionState);
62 if (exceptionState.hadException())
63 return;
64
65 // Delete id attribute from the second element because the same id cannot be used for more than one element
66 m_element2->removeAttribute(HTMLNames::idAttr);
67
68 size_t size = children.size();
69 for (size_t i = 0; i < size; ++i)
70 m_element1->appendChild(children[i], exceptionState);
71 }
72
doApply()73 void SplitElementCommand::doApply()
74 {
75 m_element1 = m_element2->cloneElementWithoutChildren();
76
77 executeApply();
78 }
79
doUnapply()80 void SplitElementCommand::doUnapply()
81 {
82 if (!m_element1 || !m_element1->rendererIsEditable() || !m_element2->rendererIsEditable())
83 return;
84
85 Vector<RefPtr<Node> > children;
86 for (Node* node = m_element1->firstChild(); node; node = node->nextSibling())
87 children.append(node);
88
89 RefPtr<Node> refChild = m_element2->firstChild();
90
91 size_t size = children.size();
92 for (size_t i = 0; i < size; ++i)
93 m_element2->insertBefore(children[i].get(), refChild.get(), IGNORE_EXCEPTION);
94
95 // Recover the id attribute of the original element.
96 if (m_element1->hasAttribute(HTMLNames::idAttr))
97 m_element2->setAttribute(HTMLNames::idAttr, m_element1->getAttribute(HTMLNames::idAttr));
98
99 m_element1->remove(IGNORE_EXCEPTION);
100 }
101
doReapply()102 void SplitElementCommand::doReapply()
103 {
104 if (!m_element1)
105 return;
106
107 executeApply();
108 }
109
110 } // namespace WebCore
111