void SVGUseElement::transferEventListenersToShadowTree(SVGElementInstance* target)
{
if (!target)
return;
SVGElement* originalElement = target->correspondingElement();
ASSERT(originalElement);
if (SVGElement* shadowTreeElement = target->shadowTreeElement()) {
if (EventTargetData* d = originalElement->eventTargetData()) {
EventListenerMap& map = d->eventListenerMap;
EventListenerMap::iterator end = map.end();
for (EventListenerMap::iterator it = map.begin(); it != end; ++it) {
EventListenerVector& entry = *it->second;
for (size_t i = 0; i < entry.size(); ++i) {
// Event listeners created from markup have already been transfered to the shadow tree during cloning.
if (entry[i].listener->wasCreatedFromMarkup())
continue;
shadowTreeElement->addEventListener(it->first, entry[i].listener, entry[i].useCapture);
}
}
}
}
for (SVGElementInstance* instance = target->firstChild(); instance; instance = instance->nextSibling())
transferEventListenersToShadowTree(instance);
}
static void associateReplacementCloneWithOriginal(SVGElement& replacementClone, SVGElement& originalClone)
{
auto* correspondingElement = originalClone.correspondingElement();
ASSERT(correspondingElement);
originalClone.setCorrespondingElement(nullptr);
replacementClone.setCorrespondingElement(correspondingElement);
}
void SVGUseElement::transferSizeAttributesToTargetClone(SVGElement& shadowElement) const
{
// FIXME: The check for valueInSpecifiedUnits being non-zero below is a workaround for the fact
// that we currently have no good way to tell whether a particular animatable attribute is a value
// indicating it was unspecified, or specified but could not be parsed. Would be nice to fix that some day.
if (is<SVGSymbolElement>(shadowElement)) {
// Spec (<use> on <symbol>): This generated 'svg' will always have explicit values for attributes width and height.
// If attributes width and/or height are provided on the 'use' element, then these attributes
// will be transferred to the generated 'svg'. If attributes width and/or height are not specified,
// the generated 'svg' element will use values of 100% for these attributes.
shadowElement.setAttribute(SVGNames::widthAttr, (widthIsValid() && width().valueInSpecifiedUnits()) ? AtomicString(width().valueAsString()) : "100%");
shadowElement.setAttribute(SVGNames::heightAttr, (heightIsValid() && height().valueInSpecifiedUnits()) ? AtomicString(height().valueAsString()) : "100%");
} else if (is<SVGSVGElement>(shadowElement)) {
// Spec (<use> on <svg>): If attributes width and/or height are provided on the 'use' element, then these
// values will override the corresponding attributes on the 'svg' in the generated tree.
SVGElement* correspondingElement = shadowElement.correspondingElement();
shadowElement.setAttribute(SVGNames::widthAttr, (widthIsValid() && width().valueInSpecifiedUnits()) ? AtomicString(width().valueAsString()) : (correspondingElement ? correspondingElement->getAttribute(SVGNames::widthAttr) : nullAtom));
shadowElement.setAttribute(SVGNames::heightAttr, (heightIsValid() && height().valueInSpecifiedUnits()) ? AtomicString(height().valueAsString()) : (correspondingElement ? correspondingElement->getAttribute(SVGNames::heightAttr) : nullAtom));
}
}