void SVGExternalResourcesRequired::insertedIntoDocument(SVGElement* targetElement)
{
if (isParserInserted())
return;
// Eventually send SVGLoad event now for the dynamically inserted script element.
if (externalResourcesRequiredBaseValue())
return;
setHaveFiredLoadEvent(true);
targetElement->sendSVGLoadEventIfPossible();
}
bool SVGExternalResourcesRequired::handleAttributeChange(SVGElement* targetElement, const QualifiedName& attrName)
{
ASSERT(targetElement);
if (!isKnownAttribute(attrName))
return false;
if (!targetElement->inDocument())
return true;
// Handle dynamic updates of the 'externalResourcesRequired' attribute. Only possible case: changing from 'true' to 'false'
// causes an immediate dispatch of the SVGLoad event. If the attribute value was 'false' before inserting the script element
// in the document, the SVGLoad event has already been dispatched.
if (!externalResourcesRequiredBaseValue() && !haveFiredLoadEvent() && !isParserInserted()) {
setHaveFiredLoadEvent(true);
ASSERT(targetElement->haveLoadedRequiredResources());
targetElement->sendSVGLoadEventIfPossible();
}
return true;
}
void SVGExternalResourcesRequired::dispatchLoadEvent(SVGElement* targetElement)
{
bool externalResourcesRequired = externalResourcesRequiredBaseValue();
if (isParserInserted())
ASSERT(externalResourcesRequired != haveFiredLoadEvent());
else if (haveFiredLoadEvent())
return;
// HTML and SVG differ completely in the 'onload' event handling of <script> elements.
// HTML fires the 'load' event after it sucessfully loaded a remote resource, otherwise an error event.
// SVG fires the SVGLoad event immediately after parsing the <script> element, if externalResourcesRequired
// is set to 'false', otherwise it dispatches the 'SVGLoad' event just after loading the remote resource.
if (!externalResourcesRequired)
return;
ASSERT(!haveFiredLoadEvent());
// Dispatch SVGLoad event
setHaveFiredLoadEvent(true);
ASSERT(targetElement->haveLoadedRequiredResources());
targetElement->sendSVGLoadEventIfPossible();
}
void ScriptLoader::dispatchLoadEvent()
{
if (ScriptLoaderClient* client = this->client())
client->dispatchLoadEvent();
setHaveFiredLoadEvent(true);
}
void SVGExternalResourcesRequired::finishParsingChildren()
{
// A SVGLoad event has been fired by SVGElement::finishParsingChildren.
if (!externalResourcesRequiredBaseValue())
setHaveFiredLoadEvent(true);
}