void SVGScriptElement::dispatchLoadEvent()
{
bool externalResourcesRequired = externalResourcesRequiredBaseValue();
if (m_data.createdByParser())
ASSERT(externalResourcesRequired != m_data.haveFiredLoadEvent());
else if (m_data.haveFiredLoadEvent()) {
// If we've already fired an load event and externalResourcesRequired is set to 'true'
// externalResourcesRequired has been modified while loading the <script>. Don't dispatch twice.
if (externalResourcesRequired)
return;
}
// HTML and SVG differ completly in the 'onload' event handling of <script> elements.
// HTML fires the 'load' event after it sucessfully loaded a remote resource, otherwhise an error event.
// SVG fires the SVGLoad event immediately after parsing the <script> element, if externalResourcesRequired
// is set to 'false', otherwhise it dispatches the 'SVGLoad' event just after loading the remote resource.
if (externalResourcesRequired) {
ASSERT(!m_data.haveFiredLoadEvent());
// Dispatch SVGLoad event
m_data.setHaveFiredLoadEvent(true);
ASSERT(haveLoadedRequiredResources());
sendSVGLoadEventIfPossible();
}
}
void SVGScriptElement::finishParsingChildren()
{
ScriptElement::finishParsingChildren(m_data, sourceAttributeValue());
SVGElement::finishParsingChildren();
// A SVGLoad event has been fired by SVGElement::finishParsingChildren.
if (!externalResourcesRequiredBaseValue())
m_data.setHaveFiredLoadEvent(true);
}
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();
}
void SVGScriptElement::insertedIntoDocument()
{
SVGElement::insertedIntoDocument();
ScriptElement::insertedIntoDocument(m_data, sourceAttributeValue());
if (m_data.createdByParser())
return;
// Eventually send SVGLoad event now for the dynamically inserted script element
if (!externalResourcesRequiredBaseValue()) {
m_data.setHaveFiredLoadEvent(true);
sendSVGLoadEventIfPossible();
}
}
void SVGScriptElement::svgAttributeChanged(const QualifiedName& attrName)
{
SVGElement::svgAttributeChanged(attrName);
if (SVGURIReference::isKnownAttribute(attrName))
handleSourceAttribute(m_data, href());
else if (SVGExternalResourcesRequired::isKnownAttribute(attrName)) {
// 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() && !m_data.haveFiredLoadEvent() && !m_data.createdByParser()) {
m_data.setHaveFiredLoadEvent(true);
ASSERT(haveLoadedRequiredResources());
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();
}
bool SVGImageElement::haveLoadedRequiredResources()
{
return !externalResourcesRequiredBaseValue() || m_imageLoader.haveFiredLoadEvent();
}
bool SVGScriptElement::haveLoadedRequiredResources()
{
return !externalResourcesRequiredBaseValue() || m_data.haveFiredLoadEvent();
}
bool SVGImageElement::haveLoadedRequiredResources()
{
return !externalResourcesRequiredBaseValue() || !m_imageLoader.hasPendingActivity();
}
bool SVGExternalResourcesRequired::haveLoadedRequiredResources() const
{
return !externalResourcesRequiredBaseValue() || haveFiredLoadEvent();
}
void SVGExternalResourcesRequired::finishParsingChildren()
{
// A SVGLoad event has been fired by SVGElement::finishParsingChildren.
if (!externalResourcesRequiredBaseValue())
setHaveFiredLoadEvent(true);
}
