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/*
* Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.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 "core/svg/SVGURIReference.h"
#include "core/XLinkNames.h"
#include "core/svg/SVGElement.h"
#include "platform/weborigin/KURL.h"
namespace WebCore {
SVGURIReference::SVGURIReference(SVGElement* element)
: m_href(SVGAnimatedString::create(element, XLinkNames::hrefAttr, SVGString::create()))
{
ASSERT(element);
element->addToPropertyMap(m_href);
}
bool SVGURIReference::isKnownAttribute(const QualifiedName& attrName)
{
return attrName.matches(XLinkNames::hrefAttr);
}
AtomicString SVGURIReference::fragmentIdentifierFromIRIString(const String& url, const TreeScope& treeScope)
{
size_t start = url.find('#');
if (start == kNotFound)
return emptyAtom;
const Document& document = treeScope.document();
KURL base = start ? KURL(document.baseURI(), url.substring(0, start)) : document.baseURI();
if (equalIgnoringFragmentIdentifier(base, document.url()))
return AtomicString(url.substring(start + 1));
return emptyAtom;
}
static inline KURL urlFromIRIStringWithFragmentIdentifier(const String& url, const TreeScope& treeScope, AtomicString& fragmentIdentifier)
{
size_t startOfFragmentIdentifier = url.find('#');
if (startOfFragmentIdentifier == kNotFound)
return KURL();
const Document& document = treeScope.document();
// Exclude the '#' character when determining the fragmentIdentifier.
fragmentIdentifier = AtomicString(url.substring(startOfFragmentIdentifier + 1));
if (startOfFragmentIdentifier) {
KURL base(document.baseURI(), url.substring(0, startOfFragmentIdentifier));
return KURL(base, url.substring(startOfFragmentIdentifier));
}
return KURL(document.baseURI(), url.substring(startOfFragmentIdentifier));
}
Element* SVGURIReference::targetElementFromIRIString(const String& iri, const TreeScope& treeScope, AtomicString* fragmentIdentifier, Document* externalDocument)
{
const Document& document = treeScope.document();
// If there's no fragment identifier contained within the IRI string, we can't lookup an element.
AtomicString id;
KURL url = urlFromIRIStringWithFragmentIdentifier(iri, document, id);
if (url == KURL())
return 0;
if (fragmentIdentifier)
*fragmentIdentifier = id;
if (id.isEmpty())
return 0;
if (externalDocument) {
// Enforce that the referenced url matches the url of the document that we've loaded for it!
ASSERT(equalIgnoringFragmentIdentifier(url, externalDocument->url()));
return externalDocument->getElementById(id);
}
// Exit early if the referenced url is external, and we have no externalDocument given.
if (isExternalURIReference(iri, document))
return 0;
return treeScope.getElementById(id);
}
void SVGURIReference::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
{
supportedAttributes.add(XLinkNames::hrefAttr);
}
bool SVGURIReference::parseAttribute(const QualifiedName& name, const AtomicString& value, SVGParsingError& parseError)
{
if (name.matches(XLinkNames::hrefAttr)) {
m_href->setBaseValueAsString(value, parseError);
return true;
}
return false;
}
}
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