WebCore/html/HTMLOptGroupElement.cpp

   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 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 "HTMLOptGroupElement.h"
  27
  28 #include "CSSStyleSelector.h"
  29 #include "Document.h"
  30 #include "HTMLNames.h"
  31 #include "HTMLSelectElement.h"
  32 #include "RenderMenuList.h"
  33 #include "NodeRenderStyle.h"
  34 #include <wtf/StdLibExtras.h>
  35
  36 namespace WebCore {
  37
  38 using namespace HTMLNames;
  39
  40 HTMLOptGroupElement::HTMLOptGroupElement(const QualifiedName& tagName, Document* doc, HTMLFormElement* f)
  41     : HTMLFormControlElement(tagName, doc, f)
  42     , m_style(0)
  43 {
  44     ASSERT(hasTagName(optgroupTag));
  45 }
  46
  47 bool HTMLOptGroupElement::supportsFocus() const
  48 {
  49     return HTMLElement::supportsFocus();
  50 }
  51
  52 bool HTMLOptGroupElement::isFocusable() const
  53 {
  54     // Optgroup elements do not have a renderer so we check the renderStyle instead.
  55     return supportsFocus() && renderStyle() && renderStyle()->display() != NONE;
  56 }
  57
  58 const AtomicString& HTMLOptGroupElement::formControlType() const
  59 {
  60     DEFINE_STATIC_LOCAL(const AtomicString, optgroup, ("optgroup"));
  61     return optgroup;
  62 }
  63
  64 bool HTMLOptGroupElement::insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode& ec, bool shouldLazyAttach)
  65 {
  66     bool result = HTMLFormControlElement::insertBefore(newChild, refChild, ec, shouldLazyAttach);
  67     return result;
  68 }
  69
  70 bool HTMLOptGroupElement::replaceChild(PassRefPtr<Node> newChild, Node* oldChild, ExceptionCode& ec, bool shouldLazyAttach)
  71 {
  72     bool result = HTMLFormControlElement::replaceChild(newChild, oldChild, ec, shouldLazyAttach);
  73     return result;
  74 }
  75
  76 bool HTMLOptGroupElement::removeChild(Node* oldChild, ExceptionCode& ec)
  77 {
  78     bool result = HTMLFormControlElement::removeChild(oldChild, ec);
  79     return result;
  80 }
  81
  82 bool HTMLOptGroupElement::appendChild(PassRefPtr<Node> newChild, ExceptionCode& ec, bool shouldLazyAttach)
  83 {
  84     bool result = HTMLFormControlElement::appendChild(newChild, ec, shouldLazyAttach);
  85     return result;
  86 }
  87
  88 bool HTMLOptGroupElement::removeChildren()
  89 {
  90     bool result = HTMLFormControlElement::removeChildren();
  91     return result;
  92 }
  93
  94 void HTMLOptGroupElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
  95 {
  96     recalcSelectOptions();
  97     HTMLFormControlElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
  98 }
  99
 100 void HTMLOptGroupElement::parseMappedAttribute(MappedAttribute* attr)
 101 {
 102     HTMLFormControlElement::parseMappedAttribute(attr);
 103     recalcSelectOptions();
 104 }
 105
 106 void HTMLOptGroupElement::recalcSelectOptions()
 107 {
 108     Node* select = parentNode();
 109     while (select && !select->hasTagName(selectTag))
 110         select = select->parentNode();
 111     if (select)
 112         static_cast<HTMLSelectElement*>(select)->setRecalcListItems();
 113 }
 114
 115 String HTMLOptGroupElement::label() const
 116 {
 117     return getAttribute(labelAttr);
 118 }
 119
 120 void HTMLOptGroupElement::setLabel(const String &value)
 121 {
 122     setAttribute(labelAttr, value);
 123 }
 124
 125 bool HTMLOptGroupElement::checkDTD(const Node* newChild)
 126 {
 127     // Make sure to keep this in sync with <select> (other than not allowing an optgroup).
 128     return newChild->isTextNode() || newChild->hasTagName(HTMLNames::optionTag) || newChild->hasTagName(HTMLNames::hrTag) || newChild->hasTagName(HTMLNames::scriptTag);
 129 }
 130
 131 void HTMLOptGroupElement::attach()
 132 {
 133     if (parentNode()->renderStyle())
 134         setRenderStyle(styleForRenderer());
 135     HTMLFormControlElement::attach();
 136 }
 137
 138 void HTMLOptGroupElement::detach()
 139 {
 140     m_style.clear();
 141     HTMLFormControlElement::detach();
 142 }
 143
 144 void HTMLOptGroupElement::setRenderStyle(PassRefPtr<RenderStyle> newStyle)
 145 {
 146     m_style = newStyle;
 147 }
 148
 149 RenderStyle* HTMLOptGroupElement::nonRendererRenderStyle() const
 150 {
 151     return m_style.get();
 152 }
 153
 154 String HTMLOptGroupElement::groupLabelText() const
 155 {
 156     String itemText = document()->displayStringModifiedByEncoding(getAttribute(labelAttr));
 157
 158     // In WinIE, leading and trailing whitespace is ignored in options and optgroups. We match this behavior.
 159     itemText = itemText.stripWhiteSpace();
 160     // We want to collapse our whitespace too.  This will match other browsers.
 161     itemText = itemText.simplifyWhiteSpace();
 162
 163     return itemText;
 164 }
 165
 166 HTMLSelectElement* HTMLOptGroupElement::ownerSelectElement() const
 167 {
 168     Node* select = parentNode();
 169     while (select && !select->hasTagName(selectTag))
 170         select = select->parentNode();
 171
 172     if (!select)
 173        return 0;
 174
 175     return static_cast<HTMLSelectElement*>(select);
 176 }
 177
 178 void HTMLOptGroupElement::accessKeyAction(bool)
 179 {
 180     HTMLSelectElement* select = ownerSelectElement();
 181     // send to the parent to bring focus to the list box
 182     if (select && !select->focused())
 183         select->accessKeyAction(false);
 184 }
 185
 186 } // namespace