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gecko-dev
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gecko-dev/dom/xml/XMLDocument.cpp

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C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/XMLDocument.h"
#include "nsParserCIID.h"
#include "nsCharsetSource.h"
#include "nsIXMLContentSink.h"
#include "nsPresContext.h"
#include "nsIContent.h"
#include "nsIDocShell.h"
#include "nsHTMLParts.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsIURI.h"
#include "nsNetUtil.h"
#include "nsError.h"
#include "nsIPrincipal.h"
#include "nsLayoutCID.h"
#include "mozilla/dom/Attr.h"
#include "nsCExternalHandlerService.h"
#include "nsMimeTypes.h"
#include "nsContentUtils.h"
#include "nsThreadUtils.h"
#include "nsJSUtils.h"
#include "nsCRT.h"
#include "nsComponentManagerUtils.h"
#include "nsContentCreatorFunctions.h"
#include "nsContentPolicyUtils.h"
#include "nsIConsoleService.h"
#include "nsIScriptError.h"
#include "nsHTMLDocument.h"
#include "mozilla/BasicEvents.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/Encoding.h"
#include "mozilla/dom/DocumentType.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/DocGroup.h"
#include "mozilla/dom/XMLDocumentBinding.h"
#include "mozilla/dom/DocumentBinding.h"
using namespace mozilla;
using namespace mozilla::dom;
// ==================================================================
// =
// ==================================================================
nsresult NS_NewDOMDocument(Document** aInstancePtrResult,
const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
DocumentType* aDoctype, nsIURI* aDocumentURI,
nsIURI* aBaseURI, nsIPrincipal* aPrincipal,
bool aLoadedAsData, nsIGlobalObject* aEventObject,
DocumentFlavor aFlavor) {
// Note: can't require that aDocumentURI/aBaseURI/aPrincipal be non-null,
// since at least one caller (XMLHttpRequest) doesn't have decent args to
// pass in.
nsresult rv;
*aInstancePtrResult = nullptr;
nsCOMPtr<Document> d;
bool isHTML = false;
bool isXHTML = false;
if (aFlavor == DocumentFlavorSVG) {
rv = NS_NewSVGDocument(getter_AddRefs(d));
} else if (aFlavor == DocumentFlavorHTML) {
rv = NS_NewHTMLDocument(getter_AddRefs(d));
isHTML = true;
} else if (aFlavor == DocumentFlavorXML) {
rv = NS_NewXMLDocument(getter_AddRefs(d));
} else if (aFlavor == DocumentFlavorPlain) {
rv = NS_NewXMLDocument(getter_AddRefs(d), aLoadedAsData, true);
} else if (aDoctype) {
MOZ_ASSERT(aFlavor == DocumentFlavorLegacyGuess);
nsAutoString publicId, name;
aDoctype->GetPublicId(publicId);
if (publicId.IsEmpty()) {
aDoctype->GetName(name);
}
if (name.EqualsLiteral("html") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.01//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Frameset//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Transitional//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.0//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Frameset//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Transitional//EN")) {
rv = NS_NewHTMLDocument(getter_AddRefs(d));
isHTML = true;
} else if (publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Strict//EN") ||
publicId.EqualsLiteral(
"-//W3C//DTD XHTML 1.0 Transitional//EN") ||
publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Frameset//EN")) {
rv = NS_NewHTMLDocument(getter_AddRefs(d));
isHTML = true;
isXHTML = true;
} else if (publicId.EqualsLiteral("-//W3C//DTD SVG 1.1//EN")) {
rv = NS_NewSVGDocument(getter_AddRefs(d));
}
// XXX Add support for XUL documents.
else {
rv = NS_NewXMLDocument(getter_AddRefs(d));
}
} else {
MOZ_ASSERT(aFlavor == DocumentFlavorLegacyGuess);
rv = NS_NewXMLDocument(getter_AddRefs(d));
}
if (NS_FAILED(rv)) {
return rv;
}
if (isHTML) {
d->SetCompatibilityMode(eCompatibility_FullStandards);
d->AsHTMLDocument()->SetIsXHTML(isXHTML);
}
d->SetLoadedAsData(aLoadedAsData);
d->SetDocumentURI(aDocumentURI);
// Must set the principal first, since SetBaseURI checks it.
d->SetPrincipals(aPrincipal, aPrincipal);
d->SetBaseURI(aBaseURI);
// We need to set the script handling object after we set the principal such
// that the doc group is assigned correctly.
if (nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(aEventObject)) {
d->SetScriptHandlingObject(sgo);
} else if (aEventObject) {
d->SetScopeObject(aEventObject);
}
// XMLDocuments and documents "created in memory" get to be UTF-8 by default,
// unlike the legacy HTML mess
d->SetDocumentCharacterSet(UTF_8_ENCODING);
if (aDoctype) {
ErrorResult result;
d->AppendChild(*aDoctype, result);
// Need to WouldReportJSException() if our callee can throw a JS
// exception (which it can) and we're neither propagating the
// error out nor unconditionally suppressing it.
result.WouldReportJSException();
if (NS_WARN_IF(result.Failed())) {
return result.StealNSResult();
}
}
if (!aQualifiedName.IsEmpty()) {
ErrorResult result;
ElementCreationOptionsOrString options;
options.SetAsString();
nsCOMPtr<Element> root =
d->CreateElementNS(aNamespaceURI, aQualifiedName, options, result);
if (NS_WARN_IF(result.Failed())) {
return result.StealNSResult();
}
d->AppendChild(*root, result);
// Need to WouldReportJSException() if our callee can throw a JS
// exception (which it can) and we're neither propagating the
// error out nor unconditionally suppressing it.
result.WouldReportJSException();
if (NS_WARN_IF(result.Failed())) {
return result.StealNSResult();
}
}
d.forget(aInstancePtrResult);
return NS_OK;
}
nsresult NS_NewXMLDocument(Document** aInstancePtrResult, bool aLoadedAsData,
bool aIsPlainDocument) {
RefPtr<XMLDocument> doc = new XMLDocument();
nsresult rv = doc->Init();
if (NS_FAILED(rv)) {
*aInstancePtrResult = nullptr;
return rv;
}
doc->SetLoadedAsData(aLoadedAsData);
doc->mIsPlainDocument = aIsPlainDocument;
doc.forget(aInstancePtrResult);
return NS_OK;
}
namespace mozilla {
namespace dom {
XMLDocument::XMLDocument(const char* aContentType)
: Document(aContentType),
mChannelIsPending(false),
mIsPlainDocument(false),
mSuppressParserErrorElement(false),
mSuppressParserErrorConsoleMessages(false) {
mType = eGenericXML;
}
nsresult XMLDocument::Init() {
nsresult rv = Document::Init();
NS_ENSURE_SUCCESS(rv, rv);
return rv;
}
void XMLDocument::Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup) {
Document::Reset(aChannel, aLoadGroup);
}
void XMLDocument::ResetToURI(nsIURI* aURI, nsILoadGroup* aLoadGroup,
nsIPrincipal* aPrincipal,
nsIPrincipal* aPartitionedPrincipal) {
if (mChannelIsPending) {
StopDocumentLoad();
mChannel->Cancel(NS_BINDING_ABORTED);
mChannelIsPending = false;
}
Document::ResetToURI(aURI, aLoadGroup, aPrincipal, aPartitionedPrincipal);
}
void XMLDocument::SetSuppressParserErrorElement(bool aSuppress) {
mSuppressParserErrorElement = aSuppress;
}
bool XMLDocument::SuppressParserErrorElement() {
return mSuppressParserErrorElement;
}
void XMLDocument::SetSuppressParserErrorConsoleMessages(bool aSuppress) {
mSuppressParserErrorConsoleMessages = aSuppress;
}
bool XMLDocument::SuppressParserErrorConsoleMessages() {
return mSuppressParserErrorConsoleMessages;
}
nsresult XMLDocument::StartDocumentLoad(const char* aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener** aDocListener,
bool aReset, nsIContentSink* aSink) {
nsresult rv = Document::StartDocumentLoad(
aCommand, aChannel, aLoadGroup, aContainer, aDocListener, aReset, aSink);
if (NS_FAILED(rv)) return rv;
int32_t charsetSource = kCharsetFromDocTypeDefault;
NotNull<const Encoding*> encoding = UTF_8_ENCODING;
TryChannelCharset(aChannel, charsetSource, encoding, nullptr);
nsCOMPtr<nsIURI> aUrl;
rv = aChannel->GetURI(getter_AddRefs(aUrl));
if (NS_FAILED(rv)) return rv;
static NS_DEFINE_CID(kCParserCID, NS_PARSER_CID);
mParser = do_CreateInstance(kCParserCID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIXMLContentSink> sink;
if (aSink) {
sink = do_QueryInterface(aSink);
} else {
nsCOMPtr<nsIDocShell> docShell;
if (aContainer) {
docShell = do_QueryInterface(aContainer);
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
}
rv = NS_NewXMLContentSink(getter_AddRefs(sink), this, aUrl, docShell,
aChannel);
NS_ENSURE_SUCCESS(rv, rv);
}
// Set the parser as the stream listener for the document loader...
rv = CallQueryInterface(mParser, aDocListener);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(mChannel, "How can we not have a channel here?");
mChannelIsPending = true;
SetDocumentCharacterSet(encoding);
mParser->SetDocumentCharset(encoding, charsetSource);
mParser->SetCommand(aCommand);
mParser->SetContentSink(sink);
mParser->Parse(aUrl, nullptr, (void*)this);
return NS_OK;
}
void XMLDocument::EndLoad() {
mChannelIsPending = false;
mSynchronousDOMContentLoaded = mLoadedAsData;
Document::EndLoad();
if (mSynchronousDOMContentLoaded) {
mSynchronousDOMContentLoaded = false;
Document::SetReadyStateInternal(Document::READYSTATE_COMPLETE);
// Generate a document load event for the case when an XML
// document was loaded as pure data without any presentation
// attached to it.
WidgetEvent event(true, eLoad);
EventDispatcher::Dispatch(ToSupports(this), nullptr, &event);
}
}
/* virtual */
void XMLDocument::DocAddSizeOfExcludingThis(nsWindowSizes& aWindowSizes) const {
Document::DocAddSizeOfExcludingThis(aWindowSizes);
}
// Document interface
nsresult XMLDocument::Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const {
NS_ASSERTION(aNodeInfo->NodeInfoManager() == mNodeInfoManager,
"Can't import this document into another document!");
RefPtr<XMLDocument> clone = new XMLDocument();
nsresult rv = CloneDocHelper(clone);
NS_ENSURE_SUCCESS(rv, rv);
// State from XMLDocument
clone->mIsPlainDocument = mIsPlainDocument;
clone.forget(aResult);
return NS_OK;
}
JSObject* XMLDocument::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
if (mIsPlainDocument) {
return Document_Binding::Wrap(aCx, this, aGivenProto);
}
return XMLDocument_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla
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