mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
360 lines
8.5 KiB
C++
360 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 nsIDOMAttr node.
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*/
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#include "nsDOMAttribute.h"
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#include "nsGenericElement.h"
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#include "mozilla/dom/Element.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsINameSpaceManager.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 "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMUserDataHandler.h"
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#include "nsEventDispatcher.h"
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#include "nsGkAtoms.h"
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#include "nsCOMArray.h"
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#include "nsNodeUtils.h"
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#include "nsEventListenerManager.h"
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#include "nsTextNode.h"
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#include "mozAutoDocUpdate.h"
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#include "nsMutationEvent.h"
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#include "nsAsyncDOMEvent.h"
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#include "nsWrapperCacheInlines.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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//----------------------------------------------------------------------
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bool nsDOMAttribute::sInitialized;
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nsDOMAttribute::nsDOMAttribute(nsDOMAttributeMap *aAttrMap,
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already_AddRefed<nsINodeInfo> aNodeInfo,
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const nsAString &aValue, bool aNsAware)
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: nsIAttribute(aAttrMap, aNodeInfo, aNsAware), mValue(aValue)
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{
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NS_ABORT_IF_FALSE(mNodeInfo, "We must get a nodeinfo here!");
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NS_ABORT_IF_FALSE(mNodeInfo->NodeType() == nsIDOMNode::ATTRIBUTE_NODE,
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"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(nsDOMAttribute)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMAttribute)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
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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_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsDOMAttribute)
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nsINode::Trace(tmp, aCallback, aClosure);
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDOMAttribute)
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nsINode::Unlink(tmp);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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DOMCI_NODE_DATA(Attr, nsDOMAttribute)
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// QueryInterface implementation for nsDOMAttribute
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NS_INTERFACE_TABLE_HEAD(nsDOMAttribute)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_NODE_INTERFACE_TABLE4(nsDOMAttribute, nsIDOMAttr, nsIAttribute, nsIDOMNode,
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nsIDOMEventTarget)
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NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(nsDOMAttribute)
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NS_INTERFACE_MAP_ENTRY_TEAROFF(nsISupportsWeakReference,
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new nsNodeSupportsWeakRefTearoff(this))
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NS_INTERFACE_MAP_ENTRY_TEAROFF(nsIDOMXPathNSResolver,
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new nsNode3Tearoff(this))
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Attr)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMAttribute)
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NS_IMPL_CYCLE_COLLECTING_RELEASE_WITH_DESTROY(nsDOMAttribute,
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nsNodeUtils::LastRelease(this))
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void
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nsDOMAttribute::SetMap(nsDOMAttributeMap *aMap)
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{
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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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nsIContent*
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nsDOMAttribute::GetContent() const
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{
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return GetContentInternal();
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}
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nsresult
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nsDOMAttribute::SetOwnerDocument(nsIDocument* aDocument)
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{
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NS_ASSERTION(aDocument, "Missing document");
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nsIDocument *doc = OwnerDoc();
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NS_ASSERTION(doc != aDocument, "bad call to nsDOMAttribute::SetOwnerDocument");
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doc->DeleteAllPropertiesFor(this);
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nsCOMPtr<nsINodeInfo> newNodeInfo;
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newNodeInfo = aDocument->NodeInfoManager()->
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GetNodeInfo(mNodeInfo->NameAtom(), mNodeInfo->GetPrefixAtom(),
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mNodeInfo->NamespaceID(),
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nsIDOMNode::ATTRIBUTE_NODE);
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NS_ENSURE_TRUE(newNodeInfo, NS_ERROR_OUT_OF_MEMORY);
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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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NS_IMETHODIMP
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nsDOMAttribute::GetName(nsAString& aName)
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{
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aName = NodeName();
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return NS_OK;
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}
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already_AddRefed<nsIAtom>
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nsDOMAttribute::GetNameAtom(nsIContent* aContent)
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{
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nsIAtom* result = nullptr;
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if (!mNsAware &&
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mNodeInfo->NamespaceID() == kNameSpaceID_None &&
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aContent->IsInHTMLDocument() &&
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aContent->IsHTML()) {
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nsString name;
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mNodeInfo->GetName(name);
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nsAutoString lowercaseName;
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nsContentUtils::ASCIIToLower(name, lowercaseName);
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nsCOMPtr<nsIAtom> nameAtom = do_GetAtom(lowercaseName);
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nameAtom.swap(result);
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} else {
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nsCOMPtr<nsIAtom> nameAtom = mNodeInfo->NameAtom();
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nameAtom.swap(result);
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}
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return result;
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}
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NS_IMETHODIMP
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nsDOMAttribute::GetValue(nsAString& aValue)
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{
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nsIContent* content = GetContentInternal();
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if (content) {
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nsCOMPtr<nsIAtom> nameAtom = GetNameAtom(content);
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content->GetAttr(mNodeInfo->NamespaceID(), nameAtom, aValue);
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}
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else {
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aValue = mValue;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMAttribute::SetValue(const nsAString& aValue)
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{
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nsIContent* content = GetContentInternal();
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if (!content) {
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mValue = aValue;
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return NS_OK;
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}
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nsCOMPtr<nsIAtom> nameAtom = GetNameAtom(content);
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return content->SetAttr(mNodeInfo->NamespaceID(),
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nameAtom,
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mNodeInfo->GetPrefixAtom(),
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aValue,
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true);
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}
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NS_IMETHODIMP
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nsDOMAttribute::GetSpecified(bool* aSpecified)
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{
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NS_ENSURE_ARG_POINTER(aSpecified);
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OwnerDoc()->WarnOnceAbout(nsIDocument::eSpecified);
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*aSpecified = true;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMAttribute::GetOwnerElement(nsIDOMElement** aOwnerElement)
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{
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NS_ENSURE_ARG_POINTER(aOwnerElement);
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OwnerDoc()->WarnOnceAbout(nsIDocument::eOwnerElement);
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nsIContent* content = GetContentInternal();
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if (content) {
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return CallQueryInterface(content, aOwnerElement);
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}
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*aOwnerElement = nullptr;
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return NS_OK;
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}
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void
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nsDOMAttribute::GetNodeValueInternal(nsAString& aNodeValue)
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{
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OwnerDoc()->WarnOnceAbout(nsIDocument::eNodeValue);
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GetValue(aNodeValue);
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}
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void
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nsDOMAttribute::SetNodeValueInternal(const nsAString& aNodeValue, ErrorResult& aError)
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{
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OwnerDoc()->WarnOnceAbout(nsIDocument::eNodeValue);
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aError = SetValue(aNodeValue);
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}
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nsresult
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nsDOMAttribute::Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const
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{
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nsAutoString value;
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const_cast<nsDOMAttribute*>(this)->GetValue(value);
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nsCOMPtr<nsINodeInfo> ni = aNodeInfo;
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*aResult = new nsDOMAttribute(nullptr, ni.forget(), value, mNsAware);
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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>
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nsDOMAttribute::GetBaseURI() const
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{
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nsINode *parent = GetContentInternal();
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return parent ? parent->GetBaseURI() : nullptr;
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}
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void
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nsDOMAttribute::GetTextContentInternal(nsAString& aTextContent)
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{
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OwnerDoc()->WarnOnceAbout(nsIDocument::eTextContent);
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GetValue(aTextContent);
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}
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void
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nsDOMAttribute::SetTextContentInternal(const nsAString& aTextContent,
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ErrorResult& aError)
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{
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OwnerDoc()->WarnOnceAbout(nsIDocument::eTextContent);
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SetNodeValueInternal(aTextContent, aError);
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}
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NS_IMETHODIMP
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nsDOMAttribute::GetIsId(bool* aReturn)
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{
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nsIContent* content = GetContentInternal();
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if (!content)
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{
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*aReturn = false;
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return NS_OK;
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}
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nsIAtom* idAtom = content->GetIDAttributeName();
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if (!idAtom)
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{
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*aReturn = false;
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return NS_OK;
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}
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*aReturn = mNodeInfo->Equals(idAtom, kNameSpaceID_None);
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return NS_OK;
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}
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bool
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nsDOMAttribute::IsNodeOfType(uint32_t aFlags) const
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{
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return !(aFlags & ~eATTRIBUTE);
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}
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uint32_t
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nsDOMAttribute::GetChildCount() const
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{
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return 0;
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}
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nsIContent *
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nsDOMAttribute::GetChildAt(uint32_t aIndex) const
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{
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return nullptr;
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}
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nsIContent * const *
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nsDOMAttribute::GetChildArray(uint32_t* aChildCount) const
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{
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*aChildCount = 0;
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return NULL;
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}
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int32_t
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nsDOMAttribute::IndexOf(const nsINode* aPossibleChild) const
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{
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return -1;
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}
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nsresult
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nsDOMAttribute::InsertChildAt(nsIContent* aKid, uint32_t aIndex,
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bool aNotify)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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nsresult
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nsDOMAttribute::AppendChildTo(nsIContent* aKid, bool aNotify)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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void
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nsDOMAttribute::RemoveChildAt(uint32_t aIndex, bool aNotify)
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{
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}
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nsresult
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nsDOMAttribute::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
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{
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aVisitor.mCanHandle = true;
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return NS_OK;
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}
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void
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nsDOMAttribute::Initialize()
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{
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sInitialized = true;
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}
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void
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nsDOMAttribute::Shutdown()
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{
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sInitialized = false;
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}
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