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#if ENABLE(DETAILS_ELEMENT)
25#include "HTMLContentElement.h"
26#include "HTMLNames.h"
27#include "HTMLSummaryElement.h"
28#include "LocalizedStrings.h"
29#include "MouseEvent.h"
30#include "NodeRenderingContext.h"
31#include "RenderBlock.h"
32#include "ShadowRoot.h"
33#include "Text.h"
34
35namespace WebCore {
36
37using namespace HTMLNames;
38
39static const AtomicString& summaryQuerySelector()
40{
41    DEFINE_STATIC_LOCAL(AtomicString, selector, ("summary:first-of-type", AtomicString::ConstructFromLiteral));
42    return selector;
43};
44
45class DetailsContentElement : public InsertionPoint {
46public:
47    static PassRefPtr<DetailsContentElement> create(Document*);
48
49private:
50    DetailsContentElement(Document* document)
51        : InsertionPoint(HTMLNames::webkitShadowContentTag, document)
52    {
53    }
54
55    virtual MatchType matchTypeFor(Node* node) const OVERRIDE
56    {
57        if (node->isElementNode() && node == node->parentNode()->querySelector(summaryQuerySelector(), ASSERT_NO_EXCEPTION))
58            return NeverMatches;
59        return AlwaysMatches;
60    }
61};
62
63PassRefPtr<DetailsContentElement> DetailsContentElement::create(Document* document)
64{
65    return adoptRef(new DetailsContentElement(document));
66}
67
68class DetailsSummaryElement : public InsertionPoint {
69public:
70    static PassRefPtr<DetailsSummaryElement> create(Document*);
71
72    Element* fallbackSummary()
73    {
74        ASSERT(firstChild() && firstChild()->hasTagName(summaryTag));
75        return toElement(firstChild());
76    }
77
78private:
79    DetailsSummaryElement(Document* document)
80        : InsertionPoint(HTMLNames::webkitShadowContentTag, document)
81    { }
82
83    virtual MatchType matchTypeFor(Node* node) const OVERRIDE
84    {
85        if (node->isElementNode() && node == node->parentNode()->querySelector(summaryQuerySelector(), ASSERT_NO_EXCEPTION))
86            return AlwaysMatches;
87        return NeverMatches;
88    }
89};
90
91PassRefPtr<DetailsSummaryElement> DetailsSummaryElement::create(Document* document)
92{
93    RefPtr<HTMLSummaryElement> summary = HTMLSummaryElement::create(summaryTag, document);
94    summary->appendChild(Text::create(document, defaultDetailsSummaryText()), ASSERT_NO_EXCEPTION);
95
96    RefPtr<DetailsSummaryElement> detailsSummary = adoptRef(new DetailsSummaryElement(document));
97    detailsSummary->appendChild(summary);
98    return detailsSummary.release();
99}
100
101PassRefPtr<HTMLDetailsElement> HTMLDetailsElement::create(const QualifiedName& tagName, Document* document)
102{
103    RefPtr<HTMLDetailsElement> details = adoptRef(new HTMLDetailsElement(tagName, document));
104    details->ensureUserAgentShadowRoot();
105    return details.release();
106}
107
108HTMLDetailsElement::HTMLDetailsElement(const QualifiedName& tagName, Document* document)
109    : HTMLElement(tagName, document)
110    , m_isOpen(false)
111{
112    ASSERT(hasTagName(detailsTag));
113}
114
115RenderObject* HTMLDetailsElement::createRenderer(RenderArena* arena, RenderStyle*)
116{
117    return new (arena) RenderBlock(this);
118}
119
120void HTMLDetailsElement::didAddUserAgentShadowRoot(ShadowRoot* root)
121{
122    root->appendChild(DetailsSummaryElement::create(document()), ASSERT_NO_EXCEPTION, AttachLazily);
123    root->appendChild(DetailsContentElement::create(document()), ASSERT_NO_EXCEPTION, AttachLazily);
124}
125
126Element* HTMLDetailsElement::findMainSummary() const
127{
128    for (Node* child = firstChild(); child; child = child->nextSibling()) {
129        if (child->hasTagName(summaryTag))
130            return toElement(child);
131    }
132
133    return static_cast<DetailsSummaryElement*>(userAgentShadowRoot()->firstChild())->fallbackSummary();
134}
135
136void HTMLDetailsElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
137{
138    if (name == openAttr) {
139        bool oldValue = m_isOpen;
140        m_isOpen = !value.isNull();
141        if (oldValue != m_isOpen)
142            reattachIfAttached();
143    } else
144        HTMLElement::parseAttribute(name, value);
145}
146
147bool HTMLDetailsElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
148{
149    if (childContext.node()->isPseudoElement())
150        return HTMLElement::childShouldCreateRenderer(childContext);
151
152    if (!childContext.isOnEncapsulationBoundary())
153        return false;
154
155    if (m_isOpen)
156        return HTMLElement::childShouldCreateRenderer(childContext);
157
158    if (!childContext.node()->hasTagName(summaryTag))
159        return false;
160
161    return childContext.node() == findMainSummary() && HTMLElement::childShouldCreateRenderer(childContext);
162}
163
164void HTMLDetailsElement::toggleOpen()
165{
166    setAttribute(openAttr, m_isOpen ? nullAtom : emptyAtom);
167}
168
169}
170
171#endif
172