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 Apple Computer, Inc.
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 "HTMLOptionElement.h"
27
28#include "CSSStyleSelector.h"
29#include "Document.h"
30#include "ExceptionCode.h"
31#include "HTMLNames.h"
32#include "HTMLSelectElement.h"
33#include "MappedAttribute.h"
34#include "NodeRenderStyle.h"
35#include "RenderMenuList.h"
36#include "Text.h"
37#include <wtf/StdLibExtras.h>
38#include <wtf/Vector.h>
39
40namespace WebCore {
41
42using namespace HTMLNames;
43
44HTMLOptionElement::HTMLOptionElement(const QualifiedName& tagName, Document* doc, HTMLFormElement* f)
45    : HTMLFormControlElement(tagName, doc, f)
46    , m_style(0)
47{
48    ASSERT(hasTagName(optionTag));
49}
50
51bool HTMLOptionElement::checkDTD(const Node* newChild)
52{
53    return newChild->isTextNode() || newChild->hasTagName(scriptTag);
54}
55
56void HTMLOptionElement::attach()
57{
58    if (parentNode()->renderStyle())
59        setRenderStyle(styleForRenderer());
60    HTMLFormControlElement::attach();
61}
62
63void HTMLOptionElement::detach()
64{
65    m_style.clear();
66    HTMLFormControlElement::detach();
67}
68
69bool HTMLOptionElement::supportsFocus() const
70{
71    return HTMLElement::supportsFocus();
72}
73
74bool HTMLOptionElement::isFocusable() const
75{
76    // Option elements do not have a renderer so we check the renderStyle instead.
77    return supportsFocus() && renderStyle() && renderStyle()->display() != NONE;
78}
79
80const AtomicString& HTMLOptionElement::formControlType() const
81{
82    DEFINE_STATIC_LOCAL(const AtomicString, option, ("option"));
83    return option;
84}
85
86String HTMLOptionElement::text() const
87{
88    return OptionElement::collectOptionLabelOrText(m_data, this);
89}
90
91void HTMLOptionElement::setText(const String &text, ExceptionCode& ec)
92{
93    // Handle the common special case where there's exactly 1 child node, and it's a text node.
94    Node* child = firstChild();
95    if (child && child->isTextNode() && !child->nextSibling()) {
96        static_cast<Text *>(child)->setData(text, ec);
97        return;
98    }
99
100    removeChildren();
101    appendChild(Text::create(document(), text), ec);
102}
103
104void HTMLOptionElement::accessKeyAction(bool)
105{
106    HTMLSelectElement* select = ownerSelectElement();
107    if (select)
108        select->accessKeySetSelectedIndex(index());
109}
110
111int HTMLOptionElement::index() const
112{
113    return OptionElement::optionIndex(ownerSelectElement(), this);
114}
115
116void HTMLOptionElement::parseMappedAttribute(MappedAttribute *attr)
117{
118    if (attr->name() == selectedAttr)
119        m_data.setSelected(!attr->isNull());
120    else if (attr->name() == valueAttr)
121        m_data.setValue(attr->value());
122    else if (attr->name() == labelAttr)
123        m_data.setLabel(attr->value());
124    else
125        HTMLFormControlElement::parseMappedAttribute(attr);
126}
127
128String HTMLOptionElement::value() const
129{
130    return OptionElement::collectOptionValue(m_data, this);
131}
132
133void HTMLOptionElement::setValue(const String& value)
134{
135    setAttribute(valueAttr, value);
136}
137
138bool HTMLOptionElement::selected() const
139{
140    if (HTMLSelectElement* select = ownerSelectElement())
141        select->recalcListItemsIfNeeded();
142    return m_data.selected();
143}
144
145void HTMLOptionElement::setSelected(bool selected)
146{
147    if (m_data.selected() == selected)
148        return;
149
150    OptionElement::setSelectedState(m_data, this, selected);
151
152    if (HTMLSelectElement* select = ownerSelectElement())
153        select->setSelectedIndex(selected ? index() : -1, false);
154}
155
156void HTMLOptionElement::setSelectedState(bool selected)
157{
158    OptionElement::setSelectedState(m_data, this, selected);
159}
160
161void HTMLOptionElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
162{
163    HTMLSelectElement* select = ownerSelectElement();
164    if (select)
165        select->childrenChanged(changedByParser);
166    HTMLFormControlElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
167}
168
169HTMLSelectElement* HTMLOptionElement::ownerSelectElement() const
170{
171    Node* select = parentNode();
172#ifdef ANDROID_FIX
173    while (select && !(select->hasTagName(selectTag) || select->hasTagName(keygenTag)))
174#else
175    while (select && !select->hasTagName(selectTag))
176#endif
177        select = select->parentNode();
178
179    if (!select)
180        return 0;
181
182    return static_cast<HTMLSelectElement*>(select);
183}
184
185bool HTMLOptionElement::defaultSelected() const
186{
187    return !getAttribute(selectedAttr).isNull();
188}
189
190void HTMLOptionElement::setDefaultSelected(bool b)
191{
192    setAttribute(selectedAttr, b ? "" : 0);
193}
194
195String HTMLOptionElement::label() const
196{
197    return m_data.label();
198}
199
200void HTMLOptionElement::setLabel(const String& value)
201{
202    setAttribute(labelAttr, value);
203}
204
205void HTMLOptionElement::setRenderStyle(PassRefPtr<RenderStyle> newStyle)
206{
207    m_style = newStyle;
208}
209
210RenderStyle* HTMLOptionElement::nonRendererRenderStyle() const
211{
212    return m_style.get();
213}
214
215String HTMLOptionElement::textIndentedToRespectGroupLabel() const
216{
217    return OptionElement::collectOptionTextRespectingGroupLabel(m_data, this);
218}
219
220bool HTMLOptionElement::disabled() const
221{
222    return ownElementDisabled() || (parentNode() && static_cast<HTMLFormControlElement*>(parentNode())->disabled());
223}
224
225void HTMLOptionElement::insertedIntoTree(bool deep)
226{
227    if (HTMLSelectElement* select = ownerSelectElement()) {
228        select->setRecalcListItems();
229        // Avoid our selected() getter since it will recalculate list items incorrectly for us.
230        if (m_data.selected())
231            select->setSelectedIndex(index(), false);
232        select->scrollToSelection();
233    }
234
235    HTMLFormControlElement::insertedIntoTree(deep);
236}
237
238} // namespace
239