SVGURIReference.cpp [plain text]
#include "config.h"
#if ENABLE(SVG)
#include "SVGURIReference.h"
#include "Attribute.h"
#include "Document.h"
#include "Element.h"
#include "KURL.h"
namespace WebCore {
bool SVGURIReference::parseAttribute(Attribute* attr)
{
if (attr->name().matches(XLinkNames::hrefAttr)) {
setHrefBaseValue(attr->value());
return true;
}
return false;
}
bool SVGURIReference::isKnownAttribute(const QualifiedName& attrName)
{
return attrName.matches(XLinkNames::hrefAttr);
}
String SVGURIReference::fragmentIdentifierFromIRIString(const String& url, Document* document)
{
ASSERT(document);
size_t start = url.find('#');
if (start == notFound)
return emptyString();
KURL base = start ? KURL(document->baseURI(), url.substring(0, start)) : document->baseURI();
String fragmentIdentifier = url.substring(start);
KURL kurl(base, fragmentIdentifier);
if (equalIgnoringFragmentIdentifier(kurl, document->url()))
return fragmentIdentifier.substring(1);
return emptyString();
}
static inline KURL urlFromIRIStringWithFragmentIdentifier(const String& url, Document* document, String& fragmentIdentifier)
{
ASSERT(document);
size_t startOfFragmentIdentifier = url.find('#');
if (startOfFragmentIdentifier == notFound)
return KURL();
fragmentIdentifier = 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, Document* document, String* fragmentIdentifier, Document* externalDocument)
{
String id;
KURL url = urlFromIRIStringWithFragmentIdentifier(iri, document, id);
if (url == KURL())
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);
}
}
#endif // ENABLE(SVG)