Пример #1
0
void SVGUseElement::buildPendingResource()
{
    if (inUseShadowTree())
        return;
    clearShadowTree();
    cancelShadowTreeRecreation();
    if (!referencedScope() || !inDocument())
        return;

    AtomicString id;
    Element* target = SVGURIReference::targetElementFromIRIString(hrefString(), treeScope(), &id, externalDocument());
    if (!target || !target->inDocument()) {
        // If we can't find the target of an external element, just give up.
        // We can't observe if the target somewhen enters the external document, nor should we do it.
        if (externalDocument())
            return;
        if (id.isEmpty())
            return;

        referencedScope()->document().accessSVGExtensions().addPendingResource(id, this);
        ASSERT(hasPendingResources());
        return;
    }

    if (target->isSVGElement()) {
        buildShadowAndInstanceTree(toSVGElement(target));
        invalidateDependentShadowTrees();
    }

    ASSERT(!m_needsShadowTreeRecreation);
}
Пример #2
0
void SVGUseElement::invalidateShadowTree()
{
    if (!inActiveDocument() || m_needsShadowTreeRecreation)
        return;
    clearInstanceRoot();
    scheduleShadowTreeRecreation();
    invalidateDependentShadowTrees();
}
Пример #3
0
void SVGUseElement::invalidateShadowTree()
{
    if (m_needsShadowTreeRecreation)
        return;
    m_needsShadowTreeRecreation = true;
    setNeedsStyleRecalc(ReconstructRenderTree);
    invalidateDependentShadowTrees();
}