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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2006, 2007, 2008, 2010 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 "LiveNodeList.h"
#include "Document.h"
#include "Element.h"
#include "HTMLCollection.h"
#include "HTMLPropertiesCollection.h"
#include "PropertyNodeList.h"
namespace WebCore {
Node* LiveNodeListBase::rootNode() const
{
if (isRootedAtDocument() && m_ownerNode->inDocument())
return m_ownerNode->document();
#if ENABLE(MICRODATA)
if (m_rootType == NodeListIsRootedAtDocumentIfOwnerHasItemrefAttr && toElement(ownerNode())->fastHasAttribute(HTMLNames::itemrefAttr)) {
if (m_ownerNode->inDocument())
return m_ownerNode->document();
Node* root = m_ownerNode.get();
while (Node* parent = root->parentNode())
root = parent;
return root;
}
#endif
return m_ownerNode.get();
}
ContainerNode* LiveNodeListBase::rootContainerNode() const
{
Node* rootNode = this->rootNode();
if (!rootNode->isContainerNode())
return 0;
return toContainerNode(rootNode);
}
void LiveNodeListBase::invalidateCache() const
{
m_cachedItem = 0;
m_isLengthCacheValid = false;
m_isItemCacheValid = false;
m_isNameCacheValid = false;
m_isItemRefElementsCacheValid = false;
if (isNodeList(type()))
return;
const HTMLCollection* cacheBase = static_cast<const HTMLCollection*>(this);
cacheBase->m_idCache.clear();
cacheBase->m_nameCache.clear();
cacheBase->m_cachedElementsArrayOffset = 0;
#if ENABLE(MICRODATA)
// FIXME: There should be more generic mechanism to clear caches in subclasses.
if (type() == ItemProperties)
static_cast<const HTMLPropertiesCollection*>(this)->invalidateCache();
#endif
}
void LiveNodeListBase::invalidateIdNameCacheMaps() const
{
ASSERT(hasIdNameCache());
const HTMLCollection* cacheBase = static_cast<const HTMLCollection*>(this);
cacheBase->m_idCache.clear();
cacheBase->m_nameCache.clear();
}
Node* LiveNodeList::namedItem(const AtomicString& elementId) const
{
Node* rootNode = this->rootNode();
if (rootNode->inDocument()) {
#if ENABLE(MICRODATA)
if (type() == PropertyNodeListType)
static_cast<const PropertyNodeList*>(this)->updateRefElements();
#endif
Element* element = rootNode->treeScope()->getElementById(elementId);
if (element && nodeMatches(element) && element->isDescendantOf(rootNode))
return element;
if (!element)
return 0;
// In the case of multiple nodes with the same name, just fall through.
}
unsigned length = this->length();
for (unsigned i = 0; i < length; i++) {
Node* node = item(i);
if (!node->isElementNode())
continue;
Element* element = toElement(node);
// FIXME: This should probably be using getIdAttribute instead of idForStyleResolution.
if (element->hasID() && element->idForStyleResolution() == elementId)
return node;
}
return 0;
}
} // namespace WebCore
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