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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Peter Kelly (pmk@post.com)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* (C) 2007 Eric Seidel (eric@webkit.org)
*
* 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 "NamedNodeMap.h"
#include "Attr.h"
#include "Document.h"
#include "Element.h"
#include "ExceptionCode.h"
#include "HTMLNames.h"
namespace WebCore {
using namespace HTMLNames;
static inline bool shouldIgnoreAttributeCase(const Element* e)
{
return e && e->document()->isHTMLDocument() && e->isHTMLElement();
}
void NamedNodeMap::ref()
{
ASSERT(m_element);
m_element->ref();
}
void NamedNodeMap::deref()
{
ASSERT(m_element);
m_element->deref();
}
PassRefPtr<Node> NamedNodeMap::getNamedItem(const String& name) const
{
Attribute* a = m_attributeData.getAttributeItem(name, shouldIgnoreAttributeCase(m_element));
if (!a)
return 0;
return a->createAttrIfNeeded(m_element);
}
PassRefPtr<Node> NamedNodeMap::getNamedItemNS(const String& namespaceURI, const String& localName) const
{
return getNamedItem(QualifiedName(nullAtom, localName, namespaceURI));
}
PassRefPtr<Node> NamedNodeMap::removeNamedItem(const String& name, ExceptionCode& ec)
{
Attribute* a = m_attributeData.getAttributeItem(name, shouldIgnoreAttributeCase(m_element));
if (!a) {
ec = NOT_FOUND_ERR;
return 0;
}
return removeNamedItem(a->name(), ec);
}
PassRefPtr<Node> NamedNodeMap::removeNamedItemNS(const String& namespaceURI, const String& localName, ExceptionCode& ec)
{
return removeNamedItem(QualifiedName(nullAtom, localName, namespaceURI), ec);
}
PassRefPtr<Node> NamedNodeMap::getNamedItem(const QualifiedName& name) const
{
Attribute* a = getAttributeItem(name);
if (!a)
return 0;
return a->createAttrIfNeeded(m_element);
}
PassRefPtr<Node> NamedNodeMap::setNamedItem(Node* node, ExceptionCode& ec)
{
if (!m_element || !node) {
ec = NOT_FOUND_ERR;
return 0;
}
// Not mentioned in spec: throw a HIERARCHY_REQUEST_ERROR if the user passes in a non-attribute node
if (!node->isAttributeNode()) {
ec = HIERARCHY_REQUEST_ERR;
return 0;
}
Attr* attr = static_cast<Attr*>(node);
Attribute* attribute = attr->attr();
size_t index = getAttributeItemIndex(attribute->name());
Attribute* oldAttribute = index != notFound ? attributeItem(index) : 0;
if (oldAttribute == attribute)
return node; // we know about it already
// INUSE_ATTRIBUTE_ERR: Raised if node is an Attr that is already an attribute of another Element object.
// The DOM user must explicitly clone Attr nodes to re-use them in other elements.
if (attr->ownerElement()) {
ec = INUSE_ATTRIBUTE_ERR;
return 0;
}
RefPtr<Attr> oldAttr;
if (oldAttribute) {
oldAttr = oldAttribute->createAttrIfNeeded(m_element);
m_attributeData.replaceAttribute(index, attribute, m_element);
} else
m_attributeData.addAttribute(attribute, m_element);
return oldAttr.release();
}
PassRefPtr<Node> NamedNodeMap::setNamedItemNS(Node* node, ExceptionCode& ec)
{
return setNamedItem(node, ec);
}
PassRefPtr<Node> NamedNodeMap::removeNamedItem(const QualifiedName& name, ExceptionCode& ec)
{
ASSERT(m_element);
size_t index = getAttributeItemIndex(name);
if (index == notFound) {
ec = NOT_FOUND_ERR;
return 0;
}
RefPtr<Attr> attr = m_attributeData.m_attributes[index]->createAttrIfNeeded(m_element);
removeAttribute(index);
return attr.release();
}
PassRefPtr<Node> NamedNodeMap::item(unsigned index) const
{
if (index >= length())
return 0;
return m_attributeData.m_attributes[index]->createAttrIfNeeded(m_element);
}
void NamedNodeMap::detachFromElement()
{
// This can't happen if the holder of the map is JavaScript, because we mark the
// element if the map is alive. So it has no impact on web page behavior. Because
// of that, we can simply clear all the attributes to avoid accessing stale
// pointers to do things like create Attr objects.
m_element = 0;
m_attributeData.clearAttributes();
}
bool NamedNodeMap::mapsEquivalent(const NamedNodeMap* otherMap) const
{
if (!otherMap)
return isEmpty();
unsigned len = length();
if (len != otherMap->length())
return false;
for (unsigned i = 0; i < len; i++) {
Attribute* attr = attributeItem(i);
Attribute* otherAttr = otherMap->getAttributeItem(attr->name());
if (!otherAttr || attr->value() != otherAttr->value())
return false;
}
return true;
}
} // namespace WebCore
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