void SVGResourcesCache::clientWillBeRemovedFromTree(LayoutObject* layoutObject)
{
if (!layoutObject->node())
return;
LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(layoutObject, false);
if (!layoutObjectCanHaveResources(layoutObject))
return;
SVGResourcesCache* cache = resourcesCacheFromLayoutObject(layoutObject);
cache->removeResourcesFromLayoutObject(layoutObject);
}
void SVGResourcesCache::clientDestroyed(LayoutObject* layoutObject)
{
ASSERT(layoutObject);
SVGResources* resources = SVGResourcesCache::cachedResourcesForLayoutObject(layoutObject);
if (resources)
resources->removeClientFromCache(layoutObject);
SVGResourcesCache* cache = resourcesCacheFromLayoutObject(layoutObject);
cache->removeResourcesFromLayoutObject(layoutObject);
}
void SVGResourcesCache::resourceDestroyed(LayoutSVGResourceContainer* resource)
{
ASSERT(resource);
SVGResourcesCache* cache = resourcesCacheFromLayoutObject(resource);
// The resource itself may have clients, that need to be notified.
cache->removeResourcesFromLayoutObject(resource);
for (auto& objectResources : cache->m_cache) {
objectResources.value->resourceDestroyed(resource);
// Mark users of destroyed resources as pending resolution based on the id of the old resource.
Element* resourceElement = resource->element();
Element* clientElement = toElement(objectResources.key->node());
SVGDocumentExtensions& extensions = clientElement->document().accessSVGExtensions();
extensions.addPendingResource(resourceElement->fastGetAttribute(HTMLNames::idAttr), clientElement);
}
}
void SVGResourcesCache::clientStyleChanged(LayoutObject* layoutObject, StyleDifference diff, const ComputedStyle& newStyle)
{
ASSERT(layoutObject);
ASSERT(layoutObject->node());
ASSERT(layoutObject->node()->isSVGElement());
if (!diff.hasDifference() || !layoutObject->parent())
return;
// In this case the proper SVGFE*Element will decide whether the modified CSS properties require a relayout or paintInvalidation.
if (layoutObject->isSVGResourceFilterPrimitive() && !diff.needsLayout())
return;
// Dynamic changes of CSS properties like 'clip-path' may require us to recompute the associated resources for a layoutObject.
// FIXME: Avoid passing in a useless StyleDifference, but instead compare oldStyle/newStyle to see which resources changed
// to be able to selectively rebuild individual resources, instead of all of them.
if (layoutObjectCanHaveResources(layoutObject)) {
SVGResourcesCache* cache = resourcesCacheFromLayoutObject(layoutObject);
cache->removeResourcesFromLayoutObject(layoutObject);
cache->addResourcesFromLayoutObject(layoutObject, newStyle);
}
LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(layoutObject, false);
}
