1/*
2 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
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 "OptionElement.h"
23
24#include "Document.h"
25#include "Element.h"
26#include "HTMLNames.h"
27#include "HTMLOptionElement.h"
28#include "OptionGroupElement.h"
29#include "ScriptElement.h"
30#include "SelectElement.h"
31#include <wtf/Assertions.h>
32
33#if ENABLE(WML)
34#include "WMLOptionElement.h"
35#include "WMLNames.h"
36#endif
37
38namespace WebCore {
39
40void OptionElement::setSelectedState(OptionElementData& data, Element* element, bool selected)
41{
42    if (data.selected() == selected)
43        return;
44
45    data.setSelected(selected);
46    element->setNeedsStyleRecalc();
47}
48
49int OptionElement::optionIndex(SelectElement* selectElement, const Element* element)
50{
51    if (!selectElement)
52        return 0;
53
54    // Let's do this dynamically. Might be a bit slow, but we're sure
55    // we won't forget to update a member variable in some cases...
56    const Vector<Element*>& items = selectElement->listItems();
57    int length = items.size();
58    int optionIndex = 0;
59    for (int i = 0; i < length; ++i) {
60        if (!isOptionElement(items[i]))
61            continue;
62        if (items[i] == element)
63            return optionIndex;
64        ++optionIndex;
65    }
66
67    return 0;
68}
69
70String OptionElement::collectOptionLabelOrText(const OptionElementData& data, const Element* element)
71{
72    Document* document = element->document();
73    String text;
74
75    // WinIE does not use the label attribute, so as a quirk, we ignore it.
76    if (!document->inCompatMode())
77        text = data.label();
78    if (text.isEmpty())
79        text = collectOptionInnerText(element);
80    return normalizeText(document, text);
81}
82
83String OptionElement::collectOptionInnerText(const Element* element)
84{
85    String text;
86    Node* n = element->firstChild();
87    while (n) {
88        if (n->nodeType() == Node::TEXT_NODE || n->nodeType() == Node::CDATA_SECTION_NODE)
89            text += n->nodeValue();
90
91        // skip script content
92        if (n->isElementNode() && toScriptElement(static_cast<Element*>(n)))
93            n = n->traverseNextSibling(element);
94        else
95            n = n->traverseNextNode(element);
96    }
97    return text;
98}
99
100String OptionElement::normalizeText(const Document* document, const String& src)
101{
102    String text = document->displayStringModifiedByEncoding(src);
103
104    // In WinIE, leading and trailing whitespace is ignored in options and optgroups. We match this behavior.
105    text = text.stripWhiteSpace();
106
107    // We want to collapse our whitespace too.  This will match other browsers.
108    text = text.simplifyWhiteSpace();
109    return text;
110}
111
112String OptionElement::collectOptionTextRespectingGroupLabel(const OptionElementData& data, const Element* element)
113{
114    Element* parentElement = static_cast<Element*>(element->parentNode());
115    if (parentElement && toOptionGroupElement(parentElement))
116        return "    " + collectOptionLabelOrText(data, element);
117
118    return collectOptionLabelOrText(data, element);
119}
120
121String OptionElement::collectOptionValue(const OptionElementData& data, const Element* element)
122{
123    String value = data.value();
124    if (!value.isNull())
125        return value;
126
127    // Use the text if the value wasn't set.
128    return collectOptionInnerText(element).stripWhiteSpace();
129}
130
131// OptionElementData
132OptionElementData::OptionElementData()
133    : m_selected(false)
134{
135}
136
137OptionElement* toOptionElement(Element* element)
138{
139    if (element->isHTMLElement() && element->hasTagName(HTMLNames::optionTag))
140        return static_cast<HTMLOptionElement*>(element);
141
142#if ENABLE(WML)
143    if (element->isWMLElement() && element->hasTagName(WMLNames::optionTag))
144        return static_cast<WMLOptionElement*>(element);
145#endif
146
147    return 0;
148}
149
150bool isOptionElement(Element* element)
151{
152    return element->hasLocalName(HTMLNames::optionTag)
153#if ENABLE(WML)
154        || element->hasLocalName(WMLNames::optionTag)
155#endif
156        ;
157}
158
159}
160