SVGURIReference.cpp [plain text]
#include "config.h"
#include "SVGURIReference.h"
#include "Attribute.h"
#include "Document.h"
#include "Element.h"
#include "URL.h"
#include "XLinkNames.h"
namespace WebCore {
bool SVGURIReference::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name.matches(XLinkNames::hrefAttr)) {
setHrefBaseValue(value);
return true;
}
return false;
}
bool SVGURIReference::isKnownAttribute(const QualifiedName& attrName)
{
return attrName.matches(XLinkNames::hrefAttr);
}
String SVGURIReference::fragmentIdentifierFromIRIString(const String& url, Document& document)
{
size_t start = url.find('#');
if (start == notFound)
return emptyString();
URL base = start ? URL(document.baseURI(), url.substring(0, start)) : document.baseURI();
String fragmentIdentifier = url.substring(start);
URL kurl(base, fragmentIdentifier);
if (equalIgnoringFragmentIdentifier(kurl, document.url()))
return fragmentIdentifier.substring(1);
return emptyString();
}
static inline URL urlFromIRIStringWithFragmentIdentifier(const String& url, Document& document, String& fragmentIdentifier)
{
size_t startOfFragmentIdentifier = url.find('#');
if (startOfFragmentIdentifier == notFound)
return URL();
fragmentIdentifier = url.substring(startOfFragmentIdentifier + 1);
if (startOfFragmentIdentifier) {
URL base(document.baseURI(), url.substring(0, startOfFragmentIdentifier));
return URL(base, url.substring(startOfFragmentIdentifier));
}
return URL(document.baseURI(), url.substring(startOfFragmentIdentifier));
}
Element* SVGURIReference::targetElementFromIRIString(const String& iri, Document& document, String* fragmentIdentifier, Document* externalDocument)
{
String id;
URL url = urlFromIRIStringWithFragmentIdentifier(iri, document, id);
if (url == URL())
return 0;
if (fragmentIdentifier)
*fragmentIdentifier = id;
if (id.isEmpty())
return 0;
if (externalDocument) {
ASSERT(equalIgnoringFragmentIdentifier(url, externalDocument->url()));
return externalDocument->getElementById(id);
}
if (isExternalURIReference(iri, document))
return 0;
return document.getElementById(id);
}
void SVGURIReference::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
{
supportedAttributes.add(XLinkNames::hrefAttr);
}
}