1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4 *           (C) 2001 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
6 *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB.  If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25#include "config.h"
26#include "core/html/HTMLOptGroupElement.h"
27
28#include "core/HTMLNames.h"
29#include "core/dom/NodeRenderStyle.h"
30#include "core/dom/Text.h"
31#include "core/editing/htmlediting.h"
32#include "core/html/HTMLContentElement.h"
33#include "core/html/HTMLDivElement.h"
34#include "core/html/HTMLSelectElement.h"
35#include "core/html/shadow/ShadowElementNames.h"
36#include "wtf/StdLibExtras.h"
37#include "wtf/unicode/CharacterNames.h"
38
39namespace blink {
40
41using namespace HTMLNames;
42
43inline HTMLOptGroupElement::HTMLOptGroupElement(Document& document)
44    : HTMLElement(optgroupTag, document)
45{
46    setHasCustomStyleCallbacks();
47}
48
49PassRefPtrWillBeRawPtr<HTMLOptGroupElement> HTMLOptGroupElement::create(Document& document)
50{
51    RefPtrWillBeRawPtr<HTMLOptGroupElement> optGroupElement = adoptRefWillBeNoop(new HTMLOptGroupElement(document));
52    optGroupElement->ensureUserAgentShadowRoot();
53    return optGroupElement.release();
54}
55
56bool HTMLOptGroupElement::isDisabledFormControl() const
57{
58    return fastHasAttribute(disabledAttr);
59}
60
61void HTMLOptGroupElement::childrenChanged(const ChildrenChange& change)
62{
63    recalcSelectOptions();
64    HTMLElement::childrenChanged(change);
65}
66
67void HTMLOptGroupElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
68{
69    HTMLElement::parseAttribute(name, value);
70    recalcSelectOptions();
71
72    if (name == disabledAttr) {
73        pseudoStateChanged(CSSSelector::PseudoDisabled);
74        pseudoStateChanged(CSSSelector::PseudoEnabled);
75    } else if (name == labelAttr) {
76        updateGroupLabel();
77    }
78}
79
80void HTMLOptGroupElement::recalcSelectOptions()
81{
82    if (HTMLSelectElement* select = Traversal<HTMLSelectElement>::firstAncestor(*this))
83        select->setRecalcListItems();
84}
85
86void HTMLOptGroupElement::attach(const AttachContext& context)
87{
88    if (context.resolvedStyle) {
89        ASSERT(!m_style || m_style == context.resolvedStyle);
90        m_style = context.resolvedStyle;
91    }
92    HTMLElement::attach(context);
93}
94
95void HTMLOptGroupElement::detach(const AttachContext& context)
96{
97    m_style.clear();
98    HTMLElement::detach(context);
99}
100
101void HTMLOptGroupElement::updateNonRenderStyle()
102{
103    m_style = originalStyleForRenderer();
104    if (renderer()) {
105        if (HTMLSelectElement* select = ownerSelectElement())
106            select->updateListOnRenderer();
107    }
108}
109
110RenderStyle* HTMLOptGroupElement::nonRendererStyle() const
111{
112    return m_style.get();
113}
114
115PassRefPtr<RenderStyle> HTMLOptGroupElement::customStyleForRenderer()
116{
117    updateNonRenderStyle();
118    return m_style;
119}
120
121String HTMLOptGroupElement::groupLabelText() const
122{
123    String itemText = getAttribute(labelAttr);
124
125    // In WinIE, leading and trailing whitespace is ignored in options and optgroups. We match this behavior.
126    itemText = itemText.stripWhiteSpace();
127    // We want to collapse our whitespace too.  This will match other browsers.
128    itemText = itemText.simplifyWhiteSpace();
129
130    return itemText;
131}
132
133HTMLSelectElement* HTMLOptGroupElement::ownerSelectElement() const
134{
135    return Traversal<HTMLSelectElement>::firstAncestor(*this);
136}
137
138void HTMLOptGroupElement::accessKeyAction(bool)
139{
140    HTMLSelectElement* select = ownerSelectElement();
141    // send to the parent to bring focus to the list box
142    if (select && !select->focused())
143        select->accessKeyAction(false);
144}
145
146void HTMLOptGroupElement::didAddUserAgentShadowRoot(ShadowRoot& root)
147{
148    DEFINE_STATIC_LOCAL(AtomicString, labelPadding, ("0 2px 1px 2px", AtomicString::ConstructFromLiteral));
149    DEFINE_STATIC_LOCAL(AtomicString, labelMinHeight, ("1.2em", AtomicString::ConstructFromLiteral));
150    RefPtrWillBeRawPtr<HTMLDivElement> label = HTMLDivElement::create(document());
151    label->setAttribute(roleAttr, AtomicString("group", AtomicString::ConstructFromLiteral));
152    label->setAttribute(aria_labelAttr, AtomicString());
153    label->setInlineStyleProperty(CSSPropertyPadding, labelPadding);
154    label->setInlineStyleProperty(CSSPropertyMinHeight, labelMinHeight);
155    label->setIdAttribute(ShadowElementNames::optGroupLabel());
156    root.appendChild(label);
157
158    RefPtrWillBeRawPtr<HTMLContentElement> content = HTMLContentElement::create(document());
159    content->setAttribute(selectAttr, "option,optgroup");
160    root.appendChild(content);
161}
162
163void HTMLOptGroupElement::updateGroupLabel()
164{
165    const String& labelText = groupLabelText();
166    HTMLDivElement& label = optGroupLabelElement();
167    label.setTextContent(labelText);
168    label.setAttribute(aria_labelAttr, AtomicString(labelText));
169}
170
171HTMLDivElement& HTMLOptGroupElement::optGroupLabelElement() const
172{
173    return *toHTMLDivElement(userAgentShadowRoot()->getElementById(ShadowElementNames::optGroupLabel()));
174}
175
176} // namespace
177