void dumpInstanceTree(unsigned int& depth, String& text, SVGElementInstance* targetInstance)
{
SVGElement* element = targetInstance->correspondingElement();
ASSERT(element);
SVGElement* shadowTreeElement = targetInstance->shadowTreeElement();
ASSERT(shadowTreeElement);
String elementId = element->getIDAttribute();
String elementNodeName = element->nodeName();
String shadowTreeElementNodeName = shadowTreeElement->nodeName();
String parentNodeName = element->parentNode() ? element->parentNode()->nodeName() : "null";
String firstChildNodeName = element->firstChild() ? element->firstChild()->nodeName() : "null";
for (unsigned int i = 0; i < depth; ++i)
text += " ";
text += String::format("SVGElementInstance this=%p, (parentNode=%s (%p), firstChild=%s (%p), correspondingElement=%s (%p), shadowTreeElement=%s (%p), id=%s)\n",
targetInstance, parentNodeName.latin1().data(), element->parentNode(), firstChildNodeName.latin1().data(), element->firstChild(),
elementNodeName.latin1().data(), element, shadowTreeElementNodeName.latin1().data(), shadowTreeElement, elementId.latin1().data());
for (unsigned int i = 0; i < depth; ++i)
text += " ";
const HashSet<SVGElementInstance*>& elementInstances = element->instancesForElement();
text += String::format("Corresponding element is associated with %i instance(s):\n", elementInstances.size());
const HashSet<SVGElementInstance*>::const_iterator end = elementInstances.end();
for (HashSet<SVGElementInstance*>::const_iterator it = elementInstances.begin(); it != end; ++it) {
for (unsigned int i = 0; i < depth; ++i)
text += " ";
text += String::format(" -> SVGElementInstance this=%p, (refCount: %i, shadowTreeElement in document? %i)\n",
*it, (*it)->refCount(), (*it)->shadowTreeElement()->inDocument());
}
++depth;
for (SVGElementInstance* instance = targetInstance->firstChild(); instance; instance = instance->nextSibling())
dumpInstanceTree(depth, text, instance);
--depth;
}
void SVGUseElement::handleDeepUseReferencing(SVGUseElement* use, SVGElementInstance* targetInstance, bool& foundProblem)
{
String id = SVGURIReference::getTarget(use->href());
Element* targetElement = document()->getElementById(id);
SVGElement* target = 0;
if (targetElement && targetElement->isSVGElement())
target = static_cast<SVGElement*>(targetElement);
if (!target)
return;
// Cycle detection first!
foundProblem = (target == this);
// Shortcut for self-references
if (foundProblem)
return;
SVGElementInstance* instance = targetInstance->parentNode();
while (instance) {
SVGElement* element = instance->correspondingElement();
if (element->getIDAttribute() == id) {
foundProblem = true;
return;
}
instance = instance->parentNode();
}
// Create an instance object, even if we're dealing with a cycle
RefPtr<SVGElementInstance> newInstance = SVGElementInstance::create(this, target);
SVGElementInstance* newInstancePtr = newInstance.get();
targetInstance->appendChild(newInstance.release());
// Eventually enter recursion to build SVGElementInstance objects for the sub-tree children
buildInstanceTree(target, newInstancePtr, foundProblem);
}
void dumpInstanceTree(unsigned int& depth, String& text, SVGElementInstance* targetInstance)
{
SVGElement* element = targetInstance->correspondingElement();
ASSERT(element);
String elementId = element->getIDAttribute();
String elementNodeName = element->nodeName();
String parentNodeName = element->parentNode() ? element->parentNode()->nodeName() : "null";
String firstChildNodeName = element->firstChild() ? element->firstChild()->nodeName() : "null";
for (unsigned int i = 0; i < depth; ++i)
text += " ";
text += String::format("SVGElementInstance (parentNode=%s, firstChild=%s, correspondingElement=%s, id=%s)\n",
parentNodeName.latin1().data(), firstChildNodeName.latin1().data(), elementNodeName.latin1().data(), elementId.latin1().data());
depth++;
for (SVGElementInstance* instance = targetInstance->firstChild(); instance; instance = instance->nextSibling())
dumpInstanceTree(depth, text, instance);
depth--;
}
