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, 2010 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 "HTMLFieldSetElement.h" 27 28#include "HTMLCollection.h" 29#include "HTMLLegendElement.h" 30#include "HTMLNames.h" 31#include "HTMLObjectElement.h" 32#include "NodeTraversal.h" 33#include "RenderFieldset.h" 34#include <wtf/StdLibExtras.h> 35 36namespace WebCore { 37 38using namespace HTMLNames; 39 40inline HTMLFieldSetElement::HTMLFieldSetElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form) 41 : HTMLFormControlElement(tagName, document, form) 42 , m_documentVersion(0) 43{ 44 ASSERT(hasTagName(fieldsetTag)); 45} 46 47PassRefPtr<HTMLFieldSetElement> HTMLFieldSetElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form) 48{ 49 return adoptRef(new HTMLFieldSetElement(tagName, document, form)); 50} 51 52void HTMLFieldSetElement::invalidateDisabledStateUnder(Element* base) 53{ 54 for (Element* element = ElementTraversal::firstWithin(base); element; element = ElementTraversal::next(element, base)) { 55 if (element->isFormControlElement()) 56 static_cast<HTMLFormControlElement*>(element)->ancestorDisabledStateWasChanged(); 57 } 58} 59 60void HTMLFieldSetElement::disabledAttributeChanged() 61{ 62 // This element must be updated before the style of nodes in its subtree gets recalculated. 63 HTMLFormControlElement::disabledAttributeChanged(); 64 invalidateDisabledStateUnder(this); 65} 66 67void HTMLFieldSetElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) 68{ 69 HTMLFormControlElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta); 70 for (Element* element = ElementTraversal::firstWithin(this); element; element = ElementTraversal::nextSkippingChildren(element, this)) { 71 if (element->hasTagName(legendTag)) 72 invalidateDisabledStateUnder(element); 73 } 74} 75 76bool HTMLFieldSetElement::supportsFocus() const 77{ 78 return HTMLElement::supportsFocus(); 79} 80 81const AtomicString& HTMLFieldSetElement::formControlType() const 82{ 83 DEFINE_STATIC_LOCAL(const AtomicString, fieldset, ("fieldset", AtomicString::ConstructFromLiteral)); 84 return fieldset; 85} 86 87RenderObject* HTMLFieldSetElement::createRenderer(RenderArena* arena, RenderStyle*) 88{ 89 return new (arena) RenderFieldset(this); 90} 91 92HTMLLegendElement* HTMLFieldSetElement::legend() const 93{ 94 for (Element* child = ElementTraversal::firstWithin(this); child; child = ElementTraversal::nextSkippingChildren(child, this)) { 95 if (child->hasTagName(legendTag)) 96 return static_cast<HTMLLegendElement*>(child); 97 } 98 return 0; 99} 100 101PassRefPtr<HTMLCollection> HTMLFieldSetElement::elements() 102{ 103 return ensureCachedHTMLCollection(FormControls); 104} 105 106void HTMLFieldSetElement::refreshElementsIfNeeded() const 107{ 108 uint64_t docVersion = document()->domTreeVersion(); 109 if (m_documentVersion == docVersion) 110 return; 111 112 m_documentVersion = docVersion; 113 114 m_associatedElements.clear(); 115 116 for (Element* element = ElementTraversal::firstWithin(this); element; element = ElementTraversal::next(element, this)) { 117 if (element->hasTagName(objectTag)) { 118 m_associatedElements.append(static_cast<HTMLObjectElement*>(element)); 119 continue; 120 } 121 122 if (!element->isFormControlElement()) 123 continue; 124 125 m_associatedElements.append(static_cast<HTMLFormControlElement*>(element)); 126 } 127} 128 129const Vector<FormAssociatedElement*>& HTMLFieldSetElement::associatedElements() const 130{ 131 refreshElementsIfNeeded(); 132 return m_associatedElements; 133} 134 135unsigned HTMLFieldSetElement::length() const 136{ 137 refreshElementsIfNeeded(); 138 unsigned len = 0; 139 for (unsigned i = 0; i < m_associatedElements.size(); ++i) 140 if (m_associatedElements[i]->isEnumeratable()) 141 ++len; 142 return len; 143} 144 145} // namespace 146