C++ (Cpp) SVGElement::eventTargetData示例

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);
}

示例#2

显示文件

void SVGUseElement::transferEventListenersToShadowTree(SVGElementInstance* target)
{
    if (!target)
        return;

    SVGElement* originalElement = target->correspondingElement();
    ASSERT(originalElement);

    if (SVGElement* shadowTreeElement = target->shadowTreeElement()) {
        if (EventTargetData* data = originalElement->eventTargetData())
            data->eventListenerMap.copyEventListenersNotCreatedFromMarkupToTarget(shadowTreeElement);
    }

    for (SVGElementInstance* instance = target->firstChild(); instance; instance = instance->nextSibling())
        transferEventListenersToShadowTree(instance);
}