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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010, 2011, 2012 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "HTMLFormControlsCollection.h"
#include "HTMLFieldSetElement.h"
#include "HTMLFormControlElement.h"
#include "HTMLFormElement.h"
#include "HTMLImageElement.h"
#include "HTMLNames.h"
namespace WebCore {
using namespace HTMLNames;
// Since the collections are to be "live", we have to do the
// calculation every time if anything has changed.
HTMLFormControlsCollection::HTMLFormControlsCollection(Node* ownerNode)
: HTMLCollection(ownerNode, FormControls, OverridesItemAfter)
{
ASSERT(isHTMLFormElement(ownerNode) || ownerNode->hasTagName(fieldsetTag));
}
PassRefPtr<HTMLFormControlsCollection> HTMLFormControlsCollection::create(Node* ownerNode, CollectionType)
{
return adoptRef(new HTMLFormControlsCollection(ownerNode));
}
HTMLFormControlsCollection::~HTMLFormControlsCollection()
{
}
const Vector<FormAssociatedElement*>& HTMLFormControlsCollection::formControlElements() const
{
ASSERT(ownerNode());
ASSERT(isHTMLFormElement(ownerNode()) || ownerNode()->hasTagName(fieldsetTag));
if (isHTMLFormElement(ownerNode()))
return toHTMLFormElement(ownerNode())->associatedElements();
return static_cast<HTMLFieldSetElement*>(ownerNode())->associatedElements();
}
const Vector<HTMLImageElement*>& HTMLFormControlsCollection::formImageElements() const
{
ASSERT(ownerNode());
ASSERT(isHTMLFormElement(ownerNode()));
return toHTMLFormElement(ownerNode())->imageElements();
}
Element* HTMLFormControlsCollection::virtualItemAfter(unsigned& offset, Element* previousItem) const
{
const Vector<FormAssociatedElement*>& elementsArray = formControlElements();
if (previousItem)
offset++;
while (offset < elementsArray.size()) {
FormAssociatedElement* element = elementsArray[offset];
if (element->isEnumeratable())
return toHTMLElement(element);
offset++;
}
return 0;
}
static HTMLElement* firstNamedItem(const Vector<FormAssociatedElement*>& elementsArray,
const Vector<HTMLImageElement*>* imageElementsArray, const QualifiedName& attrName, const String& name)
{
ASSERT(attrName == idAttr || attrName == nameAttr);
for (unsigned i = 0; i < elementsArray.size(); ++i) {
HTMLElement* element = toHTMLElement(elementsArray[i]);
if (elementsArray[i]->isEnumeratable() && element->fastGetAttribute(attrName) == name)
return element;
}
if (!imageElementsArray)
return 0;
for (unsigned i = 0; i < imageElementsArray->size(); ++i) {
HTMLImageElement* element = (*imageElementsArray)[i];
if (element->fastGetAttribute(attrName) == name)
return element;
}
return 0;
}
Node* HTMLFormControlsCollection::namedItem(const AtomicString& name) const
{
// http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/nameditem.asp
// This method first searches for an object with a matching id
// attribute. If a match is not found, the method then searches for an
// object with a matching name attribute, but only on those elements
// that are allowed a name attribute.
const Vector<HTMLImageElement*>* imagesElements = ownerNode()->hasTagName(fieldsetTag) ? 0 : &formImageElements();
if (HTMLElement* item = firstNamedItem(formControlElements(), imagesElements, idAttr, name))
return item;
return firstNamedItem(formControlElements(), imagesElements, nameAttr, name);
}
void HTMLFormControlsCollection::updateNameCache() const
{
if (hasNameCache())
return;
HashSet<AtomicStringImpl*> foundInputElements;
const Vector<FormAssociatedElement*>& elementsArray = formControlElements();
for (unsigned i = 0; i < elementsArray.size(); ++i) {
FormAssociatedElement* associatedElement = elementsArray[i];
if (associatedElement->isEnumeratable()) {
HTMLElement* element = toHTMLElement(associatedElement);
const AtomicString& idAttrVal = element->getIdAttribute();
const AtomicString& nameAttrVal = element->getNameAttribute();
if (!idAttrVal.isEmpty()) {
appendIdCache(idAttrVal, element);
foundInputElements.add(idAttrVal.impl());
}
if (!nameAttrVal.isEmpty() && idAttrVal != nameAttrVal) {
appendNameCache(nameAttrVal, element);
foundInputElements.add(nameAttrVal.impl());
}
}
}
if (isHTMLFormElement(ownerNode())) {
const Vector<HTMLImageElement*>& imageElementsArray = formImageElements();
for (unsigned i = 0; i < imageElementsArray.size(); ++i) {
HTMLImageElement* element = imageElementsArray[i];
const AtomicString& idAttrVal = element->getIdAttribute();
const AtomicString& nameAttrVal = element->getNameAttribute();
if (!idAttrVal.isEmpty() && !foundInputElements.contains(idAttrVal.impl()))
appendIdCache(idAttrVal, element);
if (!nameAttrVal.isEmpty() && idAttrVal != nameAttrVal && !foundInputElements.contains(nameAttrVal.impl()))
appendNameCache(nameAttrVal, element);
}
}
setHasNameCache();
}
}
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