forked from mirrors/gecko-dev
d2ed260822
Summary: Really sorry for the size of the patch. It's mostly automatic s/nsIDocument/Document/ but I had to fix up in a bunch of places manually to add the right namespacing and such. Overall it's not a very interesting patch I think. nsDocument.cpp turns into Document.cpp, nsIDocument.h into Document.h and nsIDocumentInlines.h into DocumentInlines.h. I also changed a bunch of nsCOMPtr usage to RefPtr, but not all of it. While fixing up some of the bits I also removed some unneeded OwnerDoc() null checks and such, but I didn't do anything riskier than that.
225 lines
6.8 KiB
C++
225 lines
6.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Implementation of DOM Core's Attr node.
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*/
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#include "mozilla/dom/Attr.h"
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#include "mozilla/dom/AttrBinding.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/InternalMutationEvent.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsError.h"
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#include "nsUnicharUtils.h"
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#include "nsDOMString.h"
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#include "nsIContentInlines.h"
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#include "mozilla/dom/Document.h"
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#include "nsGkAtoms.h"
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#include "nsCOMArray.h"
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#include "nsNameSpaceManager.h"
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#include "nsNodeUtils.h"
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#include "nsTextNode.h"
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#include "mozAutoDocUpdate.h"
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#include "nsWrapperCacheInlines.h"
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#include "NodeUbiReporting.h"
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namespace mozilla {
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namespace dom {
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//----------------------------------------------------------------------
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bool Attr::sInitialized;
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Attr::Attr(nsDOMAttributeMap* aAttrMap,
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already_AddRefed<dom::NodeInfo>&& aNodeInfo, const nsAString& aValue)
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: nsINode(std::move(aNodeInfo)), mAttrMap(aAttrMap), mValue(aValue) {
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MOZ_ASSERT(mNodeInfo, "We must get a nodeinfo here!");
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MOZ_ASSERT(mNodeInfo->NodeType() == ATTRIBUTE_NODE, "Wrong nodeType");
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// We don't add a reference to our content. It will tell us
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// to drop our reference when it goes away.
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(Attr)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Attr)
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if (!nsINode::Traverse(tmp, cb)) {
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return NS_SUCCESS_INTERRUPTED_TRAVERSE;
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAttrMap)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(Attr)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Attr)
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nsINode::Unlink(tmp);
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mAttrMap)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(Attr)
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Element* ownerElement = tmp->GetElement();
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if (tmp->HasKnownLiveWrapper()) {
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if (ownerElement) {
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// The attribute owns the element via attribute map so we can
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// mark it when the attribute is certainly alive.
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mozilla::dom::FragmentOrElement::MarkNodeChildren(ownerElement);
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}
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return true;
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}
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if (ownerElement &&
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mozilla::dom::FragmentOrElement::CanSkip(ownerElement, true)) {
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return true;
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}
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(Attr)
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return tmp->HasKnownLiveWrapperAndDoesNotNeedTracing(tmp);
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(Attr)
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return tmp->HasKnownLiveWrapper();
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
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// QueryInterface implementation for Attr
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NS_INTERFACE_TABLE_HEAD(Attr)
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NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
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NS_INTERFACE_TABLE(Attr, nsINode, EventTarget)
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NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(Attr)
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NS_INTERFACE_MAP_ENTRY_TEAROFF(nsISupportsWeakReference,
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new nsNodeSupportsWeakRefTearoff(this))
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(Attr)
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NS_IMPL_CYCLE_COLLECTING_RELEASE_WITH_LAST_RELEASE(
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Attr, nsNodeUtils::LastRelease(this))
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void Attr::SetMap(nsDOMAttributeMap* aMap) {
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if (mAttrMap && !aMap && sInitialized) {
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// We're breaking a relationship with content and not getting a new one,
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// need to locally cache value. GetValue() does that.
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GetValue(mValue);
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}
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mAttrMap = aMap;
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}
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Element* Attr::GetElement() const {
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if (!mAttrMap) {
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return nullptr;
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}
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nsIContent* content = mAttrMap->GetContent();
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return content ? content->AsElement() : nullptr;
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}
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nsresult Attr::SetOwnerDocument(Document* aDocument) {
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NS_ASSERTION(aDocument, "Missing document");
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Document* doc = OwnerDoc();
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NS_ASSERTION(doc != aDocument, "bad call to Attr::SetOwnerDocument");
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doc->DeleteAllPropertiesFor(this);
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RefPtr<dom::NodeInfo> newNodeInfo = aDocument->NodeInfoManager()->GetNodeInfo(
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mNodeInfo->NameAtom(), mNodeInfo->GetPrefixAtom(),
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mNodeInfo->NamespaceID(), ATTRIBUTE_NODE);
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NS_ASSERTION(newNodeInfo, "GetNodeInfo lies");
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mNodeInfo.swap(newNodeInfo);
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return NS_OK;
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}
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void Attr::GetName(nsAString& aName) { aName = NodeName(); }
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void Attr::GetValue(nsAString& aValue) {
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Element* element = GetElement();
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if (element) {
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RefPtr<nsAtom> nameAtom = mNodeInfo->NameAtom();
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element->GetAttr(mNodeInfo->NamespaceID(), nameAtom, aValue);
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} else {
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aValue = mValue;
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}
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}
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void Attr::SetValue(const nsAString& aValue, nsIPrincipal* aTriggeringPrincipal,
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ErrorResult& aRv) {
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Element* element = GetElement();
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if (!element) {
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mValue = aValue;
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return;
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}
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RefPtr<nsAtom> nameAtom = mNodeInfo->NameAtom();
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aRv = element->SetAttr(mNodeInfo->NamespaceID(), nameAtom,
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mNodeInfo->GetPrefixAtom(), aValue,
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aTriggeringPrincipal, true);
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}
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void Attr::SetValue(const nsAString& aValue, ErrorResult& aRv) {
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SetValue(aValue, nullptr, aRv);
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}
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bool Attr::Specified() const { return true; }
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Element* Attr::GetOwnerElement(ErrorResult& aRv) { return GetElement(); }
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void Attr::GetNodeValueInternal(nsAString& aNodeValue) { GetValue(aNodeValue); }
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void Attr::SetNodeValueInternal(const nsAString& aNodeValue,
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ErrorResult& aError) {
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SetValue(aNodeValue, nullptr, aError);
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}
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nsresult Attr::Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const {
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nsAutoString value;
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const_cast<Attr*>(this)->GetValue(value);
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*aResult = new Attr(nullptr, do_AddRef(aNodeInfo), value);
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if (!*aResult) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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already_AddRefed<nsIURI> Attr::GetBaseURI(bool aTryUseXHRDocBaseURI) const {
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Element* parent = GetElement();
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return parent ? parent->GetBaseURI(aTryUseXHRDocBaseURI) : nullptr;
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}
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void Attr::GetTextContentInternal(nsAString& aTextContent,
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OOMReporter& aError) {
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GetValue(aTextContent);
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}
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void Attr::SetTextContentInternal(const nsAString& aTextContent,
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nsIPrincipal* aSubjectPrincipal,
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ErrorResult& aError) {
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SetNodeValueInternal(aTextContent, aError);
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}
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bool Attr::IsNodeOfType(uint32_t aFlags) const { return false; }
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void Attr::GetEventTargetParent(EventChainPreVisitor& aVisitor) {
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aVisitor.mCanHandle = true;
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}
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void Attr::Initialize() { sInitialized = true; }
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void Attr::Shutdown() { sInitialized = false; }
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JSObject* Attr::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
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return Attr_Binding::Wrap(aCx, this, aGivenProto);
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}
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void Attr::ConstructUbiNode(void* storage) {
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JS::ubi::Concrete<Attr>::construct(storage, this);
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}
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} // namespace dom
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} // namespace mozilla
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