JSValue* jsNodePrototypeFunctionAppendChild(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSNode::s_info))
return throwError(exec, TypeError);
JSNode* castedThisObj = static_cast<JSNode*>(thisValue);
return castedThisObj->appendChild(exec, args);
}
void JSNodeOwner::finalize(JSC::Handle<JSC::Unknown> handle, void* context)
{
JSNode* jsNode = jsCast<JSNode*>(handle.get().asCell());
DOMWrapperWorld* world = static_cast<DOMWrapperWorld*>(context);
uncacheWrapper(world, jsNode->impl(), jsNode);
jsNode->releaseImpl();
}
void markDOMNodesForDocument(Document* doc)
{
// If a node's JS wrapper holds custom properties, those properties must
// persist every time the node is fetched from the DOM. So, we keep JS
// wrappers like that from being garbage collected.
JSWrapperCache& nodeDict = doc->wrapperCache();
JSWrapperCache::iterator nodeEnd = nodeDict.end();
for (JSWrapperCache::iterator nodeIt = nodeDict.begin(); nodeIt != nodeEnd; ++nodeIt) {
JSNode* jsNode = nodeIt->second;
Node* node = jsNode->impl();
if (jsNode->marked())
continue;
// No need to preserve a wrapper that has no custom properties or is no
// longer fetchable through the DOM.
if (!jsNode->hasCustomProperties() || !node->inDocument()) {
//... unless the wrapper wraps a loading image, since the "new Image"
// syntax allows an orphan image wrapper to be the last reference
// to a loading image, whose load event might have important side-effects.
if (!node->hasTagName(imgTag) || static_cast<HTMLImageElement*>(node)->haveFiredLoadEvent())
continue;
}
jsNode->mark();
}
}
JSValue* jsNodePrototypeFunctionNormalize(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSNode::s_info))
return throwError(exec, TypeError);
JSNode* castedThisObj = static_cast<JSNode*>(thisValue);
Node* imp = static_cast<Node*>(castedThisObj->impl());
imp->normalize();
return jsUndefined();
}
void markDOMNodesForDocument(Document* doc)
{
JSWrapperCache& nodeDict = doc->wrapperCache();
JSWrapperCache::iterator nodeEnd = nodeDict.end();
for (JSWrapperCache::iterator nodeIt = nodeDict.begin(); nodeIt != nodeEnd; ++nodeIt) {
JSNode* jsNode = nodeIt->second;
if (!jsNode->marked() && isObservableThroughDOM(jsNode))
jsNode->mark();
}
}
JSValue* jsNodePrototypeFunctionHasAttributes(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSNode::s_info))
return throwError(exec, TypeError);
JSNode* castedThisObj = static_cast<JSNode*>(thisValue);
Node* imp = static_cast<Node*>(castedThisObj->impl());
KJS::JSValue* result = jsBoolean(imp->hasAttributes());
return result;
}
JSValue JSXSLTProcessor::importStylesheet(ExecState* exec)
{
JSValue nodeVal = exec->argument(0);
if (nodeVal.inherits(&JSNode::s_info)) {
JSNode* node = static_cast<JSNode*>(asObject(nodeVal));
impl()->importStylesheet(node->impl());
return jsUndefined();
}
// Throw exception?
return jsUndefined();
}
void JSNode::mark()
{
ASSERT(!marked());
Node* node = m_impl.get();
// Nodes in the document are kept alive by JSDocument::mark,
// so we have no special responsibilities and can just call the base class here.
if (node->inDocument()) {
// But if the document isn't marked we have to mark it to ensure that
// nodes reachable from this one are also marked
if (Document* doc = node->ownerDocument())
if (DOMObject* docWrapper = getCachedDOMObjectWrapper(*Heap::heap(this)->globalData(), doc))
if (!docWrapper->marked())
docWrapper->mark();
DOMObject::mark();
return;
}
// This is a node outside the document, so find the root of the tree it is in,
// and start marking from there.
Node* root = node;
for (Node* current = m_impl.get(); current; current = current->parentNode())
root = current;
// If we're already marking this tree, then we can simply mark this wrapper
// by calling the base class; our caller is iterating the tree.
if (root->inSubtreeMark()) {
DOMObject::mark();
return;
}
// Mark the whole tree; use the global set of roots to avoid reentering.
root->setInSubtreeMark(true);
for (Node* nodeToMark = root; nodeToMark; nodeToMark = nodeToMark->traverseNextNode()) {
JSNode* wrapper = getCachedDOMNodeWrapper(m_impl->document(), nodeToMark);
if (wrapper) {
if (!wrapper->marked())
wrapper->mark();
} else if (nodeToMark == node) {
// This is the case where the map from the document to wrappers has
// been cleared out, but a wrapper is being marked. For now, we'll
// let the rest of the tree of wrappers get collected, because we have
// no good way of finding them. Later we should test behavior of other
// browsers and see if we need to preserve other wrappers in this case.
if (!marked())
mark();
}
}
root->setInSubtreeMark(false);
// Double check that we actually ended up marked. This assert caught problems in the past.
ASSERT(marked());
}
JSValue* jsNodePrototypeFunctionLookupNamespaceURI(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSNode::s_info))
return throwError(exec, TypeError);
JSNode* castedThisObj = static_cast<JSNode*>(thisValue);
Node* imp = static_cast<Node*>(castedThisObj->impl());
const UString& prefix = valueToStringWithNullCheck(exec, args[0]);
KJS::JSValue* result = jsStringOrNull(exec, imp->lookupNamespaceURI(prefix));
return result;
}
JSValue* jsNodePrototypeFunctionIsDefaultNamespace(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSNode::s_info))
return throwError(exec, TypeError);
JSNode* castedThisObj = static_cast<JSNode*>(thisValue);
Node* imp = static_cast<Node*>(castedThisObj->impl());
const UString& namespaceURI = valueToStringWithNullCheck(exec, args[0]);
KJS::JSValue* result = jsBoolean(imp->isDefaultNamespace(namespaceURI));
return result;
}
JSValue* jsNodePrototypeFunctionCloneNode(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSNode::s_info))
return throwError(exec, TypeError);
JSNode* castedThisObj = static_cast<JSNode*>(thisValue);
Node* imp = static_cast<Node*>(castedThisObj->impl());
bool deep = args[0]->toBoolean(exec);
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->cloneNode(deep)));
return result;
}
JSValue* jsNodePrototypeFunctionIsSupported(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSNode::s_info))
return throwError(exec, TypeError);
JSNode* castedThisObj = static_cast<JSNode*>(thisValue);
Node* imp = static_cast<Node*>(castedThisObj->impl());
const UString& feature = args[0]->toString(exec);
const UString& version = valueToStringWithNullCheck(exec, args[1]);
KJS::JSValue* result = jsBoolean(imp->isSupported(feature, version));
return result;
}
void JSNode::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
JSNode* thisObject = jsCast<JSNode*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
Base::visitChildren(thisObject, visitor);
Node* node = thisObject->impl();
node->visitJSEventListeners(visitor);
visitor.addOpaqueRoot(root(node));
}
JSValue JSXSLTProcessor::transformToDocument(ExecState* exec)
{
JSValue nodeVal = exec->argument(0);
if (nodeVal.inherits(&JSNode::s_info)) {
JSNode* node = static_cast<JSNode*>(asObject(nodeVal));
RefPtr<Document> resultDocument = impl()->transformToDocument(node->impl());
if (resultDocument)
return toJS(exec, globalObject(), resultDocument.get());
return jsUndefined();
}
// Throw exception?
return jsUndefined();
}
bool JSNodeOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor)
{
JSNode* jsNode = jsCast<JSNode*>(handle.get().asCell());
return isReachableFromDOM(jsNode, jsNode->impl(), visitor);
}
bool JSNodeOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor)
{
JSNode* jsNode = jsCast<JSNode*>(handle.slot()->asCell());
return isReachableFromDOM(&jsNode->wrapped(), visitor);
}