• Home
  • History
  • Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 "bindings/core/v8/ExceptionState.h"
30 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
31 #include "core/HTMLNames.h"
32 #include "core/dom/Element.h"
33 #include "wtf/Assertions.h"
34 
35 namespace blink {
36 
SplitElementCommand(PassRefPtrWillBeRawPtr<Element> element,PassRefPtrWillBeRawPtr<Node> atChild)37 SplitElementCommand::SplitElementCommand(PassRefPtrWillBeRawPtr<Element> element, PassRefPtrWillBeRawPtr<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     WillBeHeapVector<RefPtrWillBeMember<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->hasEditableStyle())
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->hasEditableStyle() || !m_element2->hasEditableStyle())
83         return;
84 
85     NodeVector children;
86     getChildNodes(*m_element1, children);
87 
88     RefPtrWillBeRawPtr<Node> refChild = m_element2->firstChild();
89 
90     size_t size = children.size();
91     for (size_t i = 0; i < size; ++i)
92         m_element2->insertBefore(children[i].get(), refChild.get(), IGNORE_EXCEPTION);
93 
94     // Recover the id attribute of the original element.
95     const AtomicString& id = m_element1->getAttribute(HTMLNames::idAttr);
96     if (!id.isNull())
97         m_element2->setAttribute(HTMLNames::idAttr, id);
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 
trace(Visitor * visitor)110 void SplitElementCommand::trace(Visitor* visitor)
111 {
112     visitor->trace(m_element1);
113     visitor->trace(m_element2);
114     visitor->trace(m_atChild);
115     SimpleEditCommand::trace(visitor);
116 }
117 
118 } // namespace blink
119