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  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)

     6  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.

     7  * Copyright (C) 2010 Google Inc. All rights reserved.

     8  *

     9  * This library is free software; you can redistribute it and/or

    10  * modify it under the terms of the GNU Library General Public

    11  * License as published by the Free Software Foundation; either

    12  * version 2 of the License, or (at your option) any later version.

    13  *

    14  * This library is distributed in the hope that it will be useful,

    15  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    17  * Library General Public License for more details.

    18  *

    19  * You should have received a copy of the GNU Library General Public License

    20  * along with this library; see the file COPYING.LIB.  If not, write to

    21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    22  * Boston, MA 02110-1301, USA.

    23  *

    24  */

    25 

    26 #include "config.h"

    27 #include "HTMLOptionElement.h"

    28 

    29 #include "Attribute.h"

    30 #include "CSSStyleSelector.h"

    31 #include "Document.h"

    32 #include "ExceptionCode.h"

    33 #include "HTMLNames.h"

    34 #include "HTMLSelectElement.h"

    35 #include "NodeRenderStyle.h"

    36 #include "RenderMenuList.h"

    37 #include "Text.h"

    38 #include <wtf/StdLibExtras.h>

    39 #include <wtf/Vector.h>

    40 

    41 namespace WebCore {

    42 

    43 using namespace HTMLNames;

    44 

    45 HTMLOptionElement::HTMLOptionElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)

    46     : HTMLFormControlElement(tagName, document, form)

    47 {

    48     ASSERT(hasTagName(optionTag));

    49 }

    50 

    51 PassRefPtr<HTMLOptionElement> HTMLOptionElement::create(Document* document, HTMLFormElement* form)

    52 {

    53     return adoptRef(new HTMLOptionElement(optionTag, document, form));

    54 }

    55 

    56 PassRefPtr<HTMLOptionElement> HTMLOptionElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)

    57 {

    58     return adoptRef(new HTMLOptionElement(tagName, document, form));

    59 }

    60 

    61 PassRefPtr<HTMLOptionElement> HTMLOptionElement::createForJSConstructor(Document* document, const String& data, const String& value,

    62         bool defaultSelected, bool selected, ExceptionCode& ec)

    63 {

    64     RefPtr<HTMLOptionElement> element = adoptRef(new HTMLOptionElement(optionTag, document));

    65 

    66     RefPtr<Text> text = Text::create(document, data.isNull() ? "" : data);

    67 

    68     ec = 0;

    69     element->appendChild(text.release(), ec);

    70     if (ec)

    71         return 0;

    72 

    73     if (!value.isNull())

    74         element->setValue(value);

    75     element->setDefaultSelected(defaultSelected);

    76     element->setSelected(selected);

    77 

    78     return element.release();

    79 }

    80 

    81 bool HTMLOptionElement::checkDTD(const Node* newChild)

    82 {

    83     return newChild->isTextNode() || newChild->hasTagName(scriptTag);

    84 }

    85 

    86 void HTMLOptionElement::attach()

    87 {

    88     if (parentNode()->renderStyle())

    89         setRenderStyle(styleForRenderer());

    90     HTMLFormControlElement::attach();

    91 }

    92 

    93 void HTMLOptionElement::detach()

    94 {

    95     m_style.clear();

    96     HTMLFormControlElement::detach();

    97 }

    98 

    99 bool HTMLOptionElement::supportsFocus() const

   100 {

   101     return HTMLElement::supportsFocus();

   102 }

   103 

   104 bool HTMLOptionElement::isFocusable() const

   105 {

   106     // Option elements do not have a renderer so we check the renderStyle instead.

   107     return supportsFocus() && renderStyle() && renderStyle()->display() != NONE;

   108 }

   109 

   110 const AtomicString& HTMLOptionElement::formControlType() const

   111 {

   112     DEFINE_STATIC_LOCAL(const AtomicString, option, ("option"));

   113     return option;

   114 }

   115 

   116 String HTMLOptionElement::text() const

   117 {

   118     return OptionElement::collectOptionLabelOrText(m_data, this);

   119 }

   120 

   121 void HTMLOptionElement::setText(const String &text, ExceptionCode& ec)

   122 {

   123     // Handle the common special case where there's exactly 1 child node, and it's a text node.

   124     Node* child = firstChild();

   125     if (child && child->isTextNode() && !child->nextSibling()) {

   126         static_cast<Text *>(child)->setData(text, ec);

   127         return;

   128     }

   129 

   130     removeChildren();

   131     appendChild(Text::create(document(), text), ec);

   132 }

   133 

   134 void HTMLOptionElement::accessKeyAction(bool)

   135 {

   136     HTMLSelectElement* select = ownerSelectElement();

   137     if (select)

   138         select->accessKeySetSelectedIndex(index());

   139 }

   140 

   141 int HTMLOptionElement::index() const

   142 {

   143     return OptionElement::optionIndex(ownerSelectElement(), this);

   144 }

   145 

   146 void HTMLOptionElement::parseMappedAttribute(Attribute* attr)

   147 {

   148     if (attr->name() == selectedAttr)

   149         m_data.setSelected(!attr->isNull());

   150     else if (attr->name() == valueAttr)

   151         m_data.setValue(attr->value());

   152     else if (attr->name() == labelAttr)

   153         m_data.setLabel(attr->value());

   154     else

   155         HTMLFormControlElement::parseMappedAttribute(attr);

   156 }

   157 

   158 String HTMLOptionElement::value() const

   159 {

   160     return OptionElement::collectOptionValue(m_data, this);

   161 }

   162 

   163 void HTMLOptionElement::setValue(const String& value)

   164 {

   165     setAttribute(valueAttr, value);

   166 }

   167 

   168 bool HTMLOptionElement::selected() const

   169 {

   170     if (HTMLSelectElement* select = ownerSelectElement())

   171         select->recalcListItemsIfNeeded();

   172     return m_data.selected();

   173 }

   174 

   175 void HTMLOptionElement::setSelected(bool selected)

   176 {

   177     if (m_data.selected() == selected)

   178         return;

   179 

   180     OptionElement::setSelectedState(m_data, this, selected);

   181 

   182     if (HTMLSelectElement* select = ownerSelectElement())

   183         select->setSelectedIndex(selected ? index() : -1, false);

   184 }

   185 

   186 void HTMLOptionElement::setSelectedState(bool selected)

   187 {

   188     OptionElement::setSelectedState(m_data, this, selected);

   189 }

   190 

   191 void HTMLOptionElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)

   192 {

   193     HTMLSelectElement* select = ownerSelectElement();

   194     if (select)

   195         select->childrenChanged(changedByParser);

   196     HTMLFormControlElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);

   197 }

   198 

   199 HTMLSelectElement* HTMLOptionElement::ownerSelectElement() const

   200 {

   201     Node* select = parentNode();

   202     while (select && !(select->hasTagName(selectTag) || select->hasTagName(keygenTag)))

   203         select = select->parentNode();

   204 

   205     if (!select)

   206         return 0;

   207 

   208     return static_cast<HTMLSelectElement*>(select);

   209 }

   210 

   211 bool HTMLOptionElement::defaultSelected() const

   212 {

   213     return !getAttribute(selectedAttr).isNull();

   214 }

   215 

   216 void HTMLOptionElement::setDefaultSelected(bool b)

   217 {

   218     setAttribute(selectedAttr, b ? "" : 0);

   219 }

   220 

   221 String HTMLOptionElement::label() const

   222 {

   223     return m_data.label();

   224 }

   225 

   226 void HTMLOptionElement::setRenderStyle(PassRefPtr<RenderStyle> newStyle)

   227 {

   228     m_style = newStyle;

   229 }

   230 

   231 RenderStyle* HTMLOptionElement::nonRendererRenderStyle() const

   232 {

   233     return m_style.get();

   234 }

   235 

   236 String HTMLOptionElement::textIndentedToRespectGroupLabel() const

   237 {

   238     return OptionElement::collectOptionTextRespectingGroupLabel(m_data, this);

   239 }

   240 

   241 bool HTMLOptionElement::disabled() const

   242 {

   243     return ownElementDisabled() || (parentNode() && static_cast<HTMLFormControlElement*>(parentNode())->disabled());

   244 }

   245 

   246 void HTMLOptionElement::insertedIntoTree(bool deep)

   247 {

   248     if (HTMLSelectElement* select = ownerSelectElement()) {

   249         select->setRecalcListItems();

   250         // Avoid our selected() getter since it will recalculate list items incorrectly for us.

   251         if (m_data.selected())

   252             select->setSelectedIndex(index(), false);

   253         select->scrollToSelection();

   254     }

   255 

   256     HTMLFormControlElement::insertedIntoTree(deep);

   257 }

   258 

   259 } // namespace