1 /*
2 * Copyright (C) 2010 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
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 GOOGLE 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 GOOGLE 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 "HTMLFormattingElementList.h"
28
29 #include "Element.h"
30 #include "NotImplemented.h"
31
32 namespace WebCore {
33
HTMLFormattingElementList()34 HTMLFormattingElementList::HTMLFormattingElementList()
35 {
36 }
37
~HTMLFormattingElementList()38 HTMLFormattingElementList::~HTMLFormattingElementList()
39 {
40 }
41
closestElementInScopeWithName(const AtomicString & targetName)42 Element* HTMLFormattingElementList::closestElementInScopeWithName(const AtomicString& targetName)
43 {
44 for (unsigned i = 1; i <= m_entries.size(); ++i) {
45 const Entry& entry = m_entries[m_entries.size() - i];
46 if (entry.isMarker())
47 return 0;
48 if (entry.element()->hasLocalName(targetName))
49 return entry.element();
50 }
51 return 0;
52 }
53
contains(Element * element)54 bool HTMLFormattingElementList::contains(Element* element)
55 {
56 return !!find(element);
57 }
58
find(Element * element)59 HTMLFormattingElementList::Entry* HTMLFormattingElementList::find(Element* element)
60 {
61 size_t index = m_entries.reverseFind(element);
62 if (index != notFound) {
63 // This is somewhat of a hack, and is why this method can't be const.
64 return &m_entries[index];
65 }
66 return 0;
67 }
68
bookmarkFor(Element * element)69 HTMLFormattingElementList::Bookmark HTMLFormattingElementList::bookmarkFor(Element* element)
70 {
71 size_t index = m_entries.reverseFind(element);
72 ASSERT(index != notFound);
73 return Bookmark(&at(index));
74 }
75
swapTo(Element * oldElement,Element * newElement,const Bookmark & bookmark)76 void HTMLFormattingElementList::swapTo(Element* oldElement, Element* newElement, const Bookmark& bookmark)
77 {
78 ASSERT(contains(oldElement));
79 ASSERT(!contains(newElement));
80 if (!bookmark.hasBeenMoved()) {
81 ASSERT(bookmark.mark()->element() == oldElement);
82 bookmark.mark()->replaceElement(newElement);
83 return;
84 }
85 size_t index = bookmark.mark() - first();
86 ASSERT(index < size());
87 m_entries.insert(index + 1, newElement);
88 remove(oldElement);
89 }
90
append(Element * element)91 void HTMLFormattingElementList::append(Element* element)
92 {
93 m_entries.append(element);
94 }
95
remove(Element * element)96 void HTMLFormattingElementList::remove(Element* element)
97 {
98 size_t index = m_entries.reverseFind(element);
99 if (index != notFound)
100 m_entries.remove(index);
101 }
102
appendMarker()103 void HTMLFormattingElementList::appendMarker()
104 {
105 m_entries.append(Entry::MarkerEntry);
106 }
107
clearToLastMarker()108 void HTMLFormattingElementList::clearToLastMarker()
109 {
110 // http://www.whatwg.org/specs/web-apps/current-work/multipage/parsing.html#clear-the-list-of-active-formatting-elements-up-to-the-last-marker
111 while (m_entries.size()) {
112 bool shouldStop = m_entries.last().isMarker();
113 m_entries.removeLast();
114 if (shouldStop)
115 break;
116 }
117 }
118
119 #ifndef NDEBUG
120
show()121 void HTMLFormattingElementList::show()
122 {
123 for (unsigned i = 1; i <= m_entries.size(); ++i) {
124 const Entry& entry = m_entries[m_entries.size() - i];
125 if (entry.isMarker())
126 fprintf(stderr, "marker\n");
127 else
128 entry.element()->showNode();
129 }
130 }
131
132 #endif
133
134 }
135