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();
}
Пример #4
0
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);
}