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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2001 Dirk Mueller (mueller (at) kde.org)
      5  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
      6  *           (C) 2006 Alexey Proskuryakov (ap (at) 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/Document.h"
     30 #include "core/dom/NodeRenderStyle.h"
     31 #include "core/html/HTMLSelectElement.h"
     32 #include "wtf/StdLibExtras.h"
     33 
     34 namespace WebCore {
     35 
     36 using namespace HTMLNames;
     37 
     38 inline HTMLOptGroupElement::HTMLOptGroupElement(Document& document)
     39     : HTMLElement(optgroupTag, document)
     40 {
     41     setHasCustomStyleCallbacks();
     42     ScriptWrappable::init(this);
     43 }
     44 
     45 DEFINE_NODE_FACTORY(HTMLOptGroupElement)
     46 
     47 bool HTMLOptGroupElement::isDisabledFormControl() const
     48 {
     49     return fastHasAttribute(disabledAttr);
     50 }
     51 
     52 bool HTMLOptGroupElement::rendererIsFocusable() const
     53 {
     54     // Optgroup elements do not have a renderer so we check the renderStyle instead.
     55     return renderStyle() && renderStyle()->display() != NONE;
     56 }
     57 
     58 void HTMLOptGroupElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
     59 {
     60     recalcSelectOptions();
     61     HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
     62 }
     63 
     64 void HTMLOptGroupElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
     65 {
     66     HTMLElement::parseAttribute(name, value);
     67     recalcSelectOptions();
     68 
     69     if (name == disabledAttr)
     70         didAffectSelector(AffectedSelectorDisabled | AffectedSelectorEnabled);
     71 }
     72 
     73 void HTMLOptGroupElement::recalcSelectOptions()
     74 {
     75     if (HTMLSelectElement* select = Traversal<HTMLSelectElement>::firstAncestor(*this))
     76         select->setRecalcListItems();
     77 }
     78 
     79 void HTMLOptGroupElement::attach(const AttachContext& context)
     80 {
     81     if (context.resolvedStyle) {
     82         ASSERT(!m_style || m_style == context.resolvedStyle);
     83         m_style = context.resolvedStyle;
     84     }
     85     HTMLElement::attach(context);
     86 }
     87 
     88 void HTMLOptGroupElement::detach(const AttachContext& context)
     89 {
     90     m_style.clear();
     91     HTMLElement::detach(context);
     92 }
     93 
     94 void HTMLOptGroupElement::updateNonRenderStyle()
     95 {
     96     bool oldDisplayNoneStatus = isDisplayNone();
     97     m_style = originalStyleForRenderer();
     98     if (oldDisplayNoneStatus != isDisplayNone()) {
     99         if (HTMLSelectElement* select = ownerSelectElement())
    100             select->updateListOnRenderer();
    101     }
    102 }
    103 
    104 RenderStyle* HTMLOptGroupElement::nonRendererStyle() const
    105 {
    106     return m_style.get();
    107 }
    108 
    109 PassRefPtr<RenderStyle> HTMLOptGroupElement::customStyleForRenderer()
    110 {
    111     updateNonRenderStyle();
    112     return m_style;
    113 }
    114 
    115 String HTMLOptGroupElement::groupLabelText() const
    116 {
    117     String itemText = getAttribute(labelAttr);
    118 
    119     // In WinIE, leading and trailing whitespace is ignored in options and optgroups. We match this behavior.
    120     itemText = itemText.stripWhiteSpace();
    121     // We want to collapse our whitespace too.  This will match other browsers.
    122     itemText = itemText.simplifyWhiteSpace();
    123 
    124     return itemText;
    125 }
    126 
    127 HTMLSelectElement* HTMLOptGroupElement::ownerSelectElement() const
    128 {
    129     return Traversal<HTMLSelectElement>::firstAncestor(*this);
    130 }
    131 
    132 void HTMLOptGroupElement::accessKeyAction(bool)
    133 {
    134     HTMLSelectElement* select = ownerSelectElement();
    135     // send to the parent to bring focus to the list box
    136     if (select && !select->focused())
    137         select->accessKeyAction(false);
    138 }
    139 
    140 bool HTMLOptGroupElement::isDisplayNone() const
    141 {
    142     RenderStyle* style = nonRendererStyle();
    143     return style && style->display() == NONE;
    144 }
    145 
    146 } // namespace
    147