1 /*
2 * Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21 #include "config.h"
22 #include "HTMLDetailsElement.h"
23
24 #include "HTMLNames.h"
25 #include "HTMLSummaryElement.h"
26 #include "LocalizedStrings.h"
27 #include "MouseEvent.h"
28 #include "RenderDetails.h"
29 #include "Text.h"
30
31 namespace WebCore {
32
33 using namespace HTMLNames;
34
create(const QualifiedName & tagName,Document * document)35 PassRefPtr<HTMLDetailsElement> HTMLDetailsElement::create(const QualifiedName& tagName, Document* document)
36 {
37 return adoptRef(new HTMLDetailsElement(tagName, document));
38 }
39
HTMLDetailsElement(const QualifiedName & tagName,Document * document)40 HTMLDetailsElement::HTMLDetailsElement(const QualifiedName& tagName, Document* document)
41 : HTMLElement(tagName, document)
42 , m_mainSummary(0)
43 , m_isOpen(false)
44 {
45 ASSERT(hasTagName(detailsTag));
46 }
47
createRenderer(RenderArena * arena,RenderStyle *)48 RenderObject* HTMLDetailsElement::createRenderer(RenderArena* arena, RenderStyle*)
49 {
50 return new (arena) RenderDetails(this);
51 }
52
findSummaryFor(ContainerNode * container)53 Node* HTMLDetailsElement::findSummaryFor(ContainerNode* container)
54 {
55 for (Node* child = container->firstChild(); child; child = child->nextSibling()) {
56 if (child->hasTagName(summaryTag))
57 return child;
58 }
59
60 return 0;
61 }
62
findMainSummary()63 Node* HTMLDetailsElement::findMainSummary()
64 {
65 Node* found = findSummaryFor(this);
66 if (found) {
67 removeShadowRoot();
68 return found;
69 }
70
71 createShadowSubtree();
72 found = findSummaryFor(shadowRoot());
73 ASSERT(found);
74 return found;
75 }
76
refreshMainSummary(RefreshRenderer refreshRenderer)77 void HTMLDetailsElement::refreshMainSummary(RefreshRenderer refreshRenderer)
78 {
79 RefPtr<Node> oldSummary = m_mainSummary;
80 m_mainSummary = findMainSummary();
81
82 if (oldSummary == m_mainSummary || !attached())
83 return;
84
85 if (oldSummary && oldSummary->parentNodeForRenderingAndStyle()) {
86 oldSummary->detach();
87 oldSummary->attach();
88 }
89
90 if (refreshRenderer == RefreshRendererAllowed) {
91 m_mainSummary->detach();
92 m_mainSummary->attach();
93 }
94 }
95
createShadowSubtree()96 void HTMLDetailsElement::createShadowSubtree()
97 {
98 if (shadowRoot())
99 return;
100
101 RefPtr<HTMLSummaryElement> defaultSummary = HTMLSummaryElement::create(summaryTag, document());
102 ExceptionCode ec = 0;
103 defaultSummary->appendChild(Text::create(document(), defaultDetailsSummaryText()), ec);
104 ensureShadowRoot()->appendChild(defaultSummary, ec, true);
105 }
106
107
childrenChanged(bool changedByParser,Node * beforeChange,Node * afterChange,int childCountDelta)108 void HTMLDetailsElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
109 {
110 HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
111 // If childCountDelta is less then zero and the main summary has changed it must be because previous main
112 // summary was removed. The new main summary was then inside the unrevealed content and needs to be
113 // reattached to create its renderer. If childCountDelta is not less then zero then a new <summary> element
114 // has been added and it will be attached without our help.
115 if (!changedByParser)
116 refreshMainSummary(childCountDelta < 0 ? RefreshRendererAllowed : RefreshRendererSupressed);
117 }
118
finishParsingChildren()119 void HTMLDetailsElement::finishParsingChildren()
120 {
121 HTMLElement::finishParsingChildren();
122 refreshMainSummary(RefreshRendererAllowed);
123 }
124
parseMappedAttribute(Attribute * attr)125 void HTMLDetailsElement::parseMappedAttribute(Attribute* attr)
126 {
127 if (attr->name() == openAttr) {
128 bool oldValue = m_isOpen;
129 m_isOpen = !attr->value().isNull();
130 if (attached() && oldValue != m_isOpen) {
131 detach();
132 attach();
133 }
134 } else
135 HTMLElement::parseMappedAttribute(attr);
136 }
137
childShouldCreateRenderer(Node * child) const138 bool HTMLDetailsElement::childShouldCreateRenderer(Node* child) const
139 {
140 return m_isOpen || child == m_mainSummary;
141 }
142
toggleOpen()143 void HTMLDetailsElement::toggleOpen()
144 {
145 setAttribute(openAttr, m_isOpen ? nullAtom : emptyAtom);
146 }
147
148 }
149