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gecko-dev/parser/html/nsHtml5TreeOperation.cpp

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41 KiB
C++
Исходник Ответственный История

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* 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 "nsHtml5TreeOperation.h"
#include "nsContentUtils.h"
#include "nsDocElementCreatedNotificationRunner.h"
#include "nsNodeUtils.h"
#include "nsAttrName.h"
#include "nsHtml5TreeBuilder.h"
#include "nsIDOMMutationEvent.h"
#include "mozAutoDocUpdate.h"
#include "nsBindingManager.h"
#include "nsXBLBinding.h"
#include "nsHtml5DocumentMode.h"
#include "nsHtml5HtmlAttributes.h"
#include "nsContentCreatorFunctions.h"
#include "nsIScriptElement.h"
#include "nsIDTD.h"
#include "nsISupportsImpl.h"
#include "nsIDOMHTMLFormElement.h"
#include "nsIFormControl.h"
#include "nsIStyleSheetLinkingElement.h"
#include "nsIDOMDocumentType.h"
#include "nsIObserverService.h"
#include "mozilla/Services.h"
#include "nsIMutationObserver.h"
#include "nsIFormProcessor.h"
#include "nsIServiceManager.h"
#include "nsEscape.h"
#include "mozilla/dom/Comment.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/HTMLImageElement.h"
#include "mozilla/dom/HTMLTemplateElement.h"
#include "nsHtml5SVGLoadDispatcher.h"
#include "nsIURI.h"
#include "nsIProtocolHandler.h"
#include "nsNetUtil.h"
#include "nsIHTMLDocument.h"
#include "mozilla/Likely.h"
#include "nsTextNode.h"
#include "nsHtml5AutoPauseUpdate.h"
using namespace mozilla;
static NS_DEFINE_CID(kFormProcessorCID, NS_FORMPROCESSOR_CID);
/**
* Helper class that opens a notification batch if the current doc
* is different from the executor doc.
*/
class MOZ_STACK_CLASS nsHtml5OtherDocUpdate {
public:
nsHtml5OtherDocUpdate(nsIDocument* aCurrentDoc, nsIDocument* aExecutorDoc)
{
NS_PRECONDITION(aCurrentDoc, "Node has no doc?");
NS_PRECONDITION(aExecutorDoc, "Executor has no doc?");
if (MOZ_LIKELY(aCurrentDoc == aExecutorDoc)) {
mDocument = nullptr;
} else {
mDocument = aCurrentDoc;
aCurrentDoc->BeginUpdate(UPDATE_CONTENT_MODEL);
}
}
~nsHtml5OtherDocUpdate()
{
if (MOZ_UNLIKELY(mDocument)) {
mDocument->EndUpdate(UPDATE_CONTENT_MODEL);
}
}
private:
nsCOMPtr<nsIDocument> mDocument;
};
nsHtml5TreeOperation::nsHtml5TreeOperation()
: mOpCode(eTreeOpUninitialized)
{
MOZ_COUNT_CTOR(nsHtml5TreeOperation);
}
nsHtml5TreeOperation::~nsHtml5TreeOperation()
{
MOZ_COUNT_DTOR(nsHtml5TreeOperation);
NS_ASSERTION(mOpCode != eTreeOpUninitialized, "Uninitialized tree op.");
switch(mOpCode) {
case eTreeOpAddAttributes:
delete mTwo.attributes;
break;
case eTreeOpCreateHTMLElementNetwork:
case eTreeOpCreateHTMLElementNotNetwork:
case eTreeOpCreateSVGElementNetwork:
case eTreeOpCreateSVGElementNotNetwork:
case eTreeOpCreateMathMLElement:
delete mThree.attributes;
break;
case eTreeOpAppendDoctypeToDocument:
delete mTwo.stringPair;
break;
case eTreeOpFosterParentText:
case eTreeOpAppendText:
case eTreeOpAppendComment:
case eTreeOpAppendCommentToDocument:
case eTreeOpAddViewSourceHref:
case eTreeOpAddViewSourceBase:
delete[] mTwo.unicharPtr;
break;
case eTreeOpSetDocumentCharset:
case eTreeOpNeedsCharsetSwitchTo:
break;
case eTreeOpProcessOfflineManifest:
free(mOne.unicharPtr);
break;
default: // keep the compiler happy
break;
}
}
nsresult
nsHtml5TreeOperation::AppendTextToTextNode(const char16_t* aBuffer,
uint32_t aLength,
nsIContent* aTextNode,
nsHtml5DocumentBuilder* aBuilder)
{
NS_PRECONDITION(aTextNode, "Got null text node.");
MOZ_ASSERT(aBuilder);
MOZ_ASSERT(aBuilder->IsInDocUpdate());
uint32_t oldLength = aTextNode->TextLength();
CharacterDataChangeInfo info = {
true,
oldLength,
oldLength,
aLength
};
nsNodeUtils::CharacterDataWillChange(aTextNode, &info);
nsresult rv = aTextNode->AppendText(aBuffer, aLength, false);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::CharacterDataChanged(aTextNode, &info);
return rv;
}
nsresult
nsHtml5TreeOperation::AppendText(const char16_t* aBuffer,
uint32_t aLength,
nsIContent* aParent,
nsHtml5DocumentBuilder* aBuilder)
{
nsresult rv = NS_OK;
nsIContent* lastChild = aParent->GetLastChild();
if (lastChild && lastChild->IsNodeOfType(nsINode::eTEXT)) {
nsHtml5OtherDocUpdate update(aParent->OwnerDoc(),
aBuilder->GetDocument());
return AppendTextToTextNode(aBuffer,
aLength,
lastChild,
aBuilder);
}
nsNodeInfoManager* nodeInfoManager = aParent->OwnerDoc()->NodeInfoManager();
RefPtr<nsTextNode> text = new nsTextNode(nodeInfoManager);
NS_ASSERTION(text, "Infallible malloc failed?");
rv = text->SetText(aBuffer, aLength, false);
NS_ENSURE_SUCCESS(rv, rv);
return Append(text, aParent, aBuilder);
}
nsresult
nsHtml5TreeOperation::Append(nsIContent* aNode,
nsIContent* aParent,
nsHtml5DocumentBuilder* aBuilder)
{
MOZ_ASSERT(aBuilder);
MOZ_ASSERT(aBuilder->IsInDocUpdate());
nsresult rv = NS_OK;
nsHtml5OtherDocUpdate update(aParent->OwnerDoc(),
aBuilder->GetDocument());
rv = aParent->AppendChildTo(aNode, false);
if (NS_SUCCEEDED(rv)) {
aNode->SetParserHasNotified();
nsNodeUtils::ContentAppended(aParent, aNode);
}
return rv;
}
nsresult
nsHtml5TreeOperation::AppendToDocument(nsIContent* aNode,
nsHtml5DocumentBuilder* aBuilder)
{
MOZ_ASSERT(aBuilder);
MOZ_ASSERT(aBuilder->GetDocument() == aNode->OwnerDoc());
MOZ_ASSERT(aBuilder->IsInDocUpdate());
nsresult rv = NS_OK;
nsIDocument* doc = aBuilder->GetDocument();
rv = doc->AppendChildTo(aNode, false);
if (rv == NS_ERROR_DOM_HIERARCHY_REQUEST_ERR) {
aNode->SetParserHasNotified();
return NS_OK;
}
NS_ENSURE_SUCCESS(rv, rv);
aNode->SetParserHasNotified();
nsNodeUtils::ContentInserted(doc, aNode);
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
"Someone forgot to block scripts");
if (aNode->IsElement()) {
nsContentUtils::AddScriptRunner(
new nsDocElementCreatedNotificationRunner(doc));
}
return rv;
}
static bool
IsElementOrTemplateContent(nsINode* aNode) {
if (aNode) {
if (aNode->IsElement()) {
return true;
} else if (aNode->NodeType() == nsIDOMNode::DOCUMENT_FRAGMENT_NODE) {
// Check if the node is a template content.
mozilla::dom::DocumentFragment* frag =
static_cast<mozilla::dom::DocumentFragment*>(aNode);
nsIContent* fragHost = frag->GetHost();
if (fragHost && nsNodeUtils::IsTemplateElement(fragHost)) {
return true;
}
}
}
return false;
}
void
nsHtml5TreeOperation::Detach(nsIContent* aNode, nsHtml5DocumentBuilder* aBuilder)
{
MOZ_ASSERT(aBuilder);
MOZ_ASSERT(aBuilder->IsInDocUpdate());
nsCOMPtr<nsINode> parent = aNode->GetParentNode();
if (parent) {
nsHtml5OtherDocUpdate update(parent->OwnerDoc(),
aBuilder->GetDocument());
int32_t pos = parent->IndexOf(aNode);
NS_ASSERTION((pos >= 0), "Element not found as child of its parent");
parent->RemoveChildAt(pos, true);
}
}
nsresult
nsHtml5TreeOperation::AppendChildrenToNewParent(nsIContent* aNode,
nsIContent* aParent,
nsHtml5DocumentBuilder* aBuilder)
{
MOZ_ASSERT(aBuilder);
MOZ_ASSERT(aBuilder->IsInDocUpdate());
nsHtml5OtherDocUpdate update(aParent->OwnerDoc(),
aBuilder->GetDocument());
bool didAppend = false;
while (aNode->HasChildren()) {
nsCOMPtr<nsIContent> child = aNode->GetFirstChild();
aNode->RemoveChildAt(0, true);
nsresult rv = aParent->AppendChildTo(child, false);
NS_ENSURE_SUCCESS(rv, rv);
didAppend = true;
}
if (didAppend) {
nsNodeUtils::ContentAppended(aParent, aParent->GetLastChild());
}
return NS_OK;
}
nsresult
nsHtml5TreeOperation::FosterParent(nsIContent* aNode,
nsIContent* aParent,
nsIContent* aTable,
nsHtml5DocumentBuilder* aBuilder)
{
MOZ_ASSERT(aBuilder);
MOZ_ASSERT(aBuilder->IsInDocUpdate());
nsIContent* foster = aTable->GetParent();
if (IsElementOrTemplateContent(foster)) {
nsHtml5OtherDocUpdate update(foster->OwnerDoc(),
aBuilder->GetDocument());
uint32_t pos = foster->IndexOf(aTable);
nsresult rv = foster->InsertChildAt(aNode, pos, false);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::ContentInserted(foster, aNode);
return rv;
}
return Append(aNode, aParent, aBuilder);
}
nsresult
nsHtml5TreeOperation::AddAttributes(nsIContent* aNode,
nsHtml5HtmlAttributes* aAttributes,
nsHtml5DocumentBuilder* aBuilder)
{
dom::Element* node = aNode->AsElement();
nsHtml5OtherDocUpdate update(node->OwnerDoc(),
aBuilder->GetDocument());
int32_t len = aAttributes->getLength();
for (int32_t i = len; i > 0;) {
--i;
// prefix doesn't need regetting. it is always null or a static atom
// local name is never null
RefPtr<nsAtom> localName =
Reget(aAttributes->getLocalNameNoBoundsCheck(i));
int32_t nsuri = aAttributes->getURINoBoundsCheck(i);
if (!node->HasAttr(nsuri, localName)) {
// prefix doesn't need regetting. it is always null or a static atom
// local name is never null
nsString value; // Not Auto, because using it to hold nsStringBuffer*
aAttributes->getValueNoBoundsCheck(i).ToString(value);
node->SetAttr(
nsuri, localName, aAttributes->getPrefixNoBoundsCheck(i), value, true);
// XXX what to do with nsresult?
}
}
return NS_OK;
}
void
nsHtml5TreeOperation::SetHTMLElementAttributes(dom::Element* aElement,
nsAtom* aName,
nsHtml5HtmlAttributes* aAttributes)
{
int32_t len = aAttributes->getLength();
for (int32_t i = 0; i < len; i++) {
nsHtml5String val = aAttributes->getValueNoBoundsCheck(i);
nsAtom* klass = val.MaybeAsAtom();
if (klass) {
aElement->SetSingleClassFromParser(klass);
} else {
// prefix doesn't need regetting. it is always null or a static atom
// local name is never null
RefPtr<nsAtom> localName =
Reget(aAttributes->getLocalNameNoBoundsCheck(i));
RefPtr<nsAtom> prefix = aAttributes->getPrefixNoBoundsCheck(i);
int32_t nsuri = aAttributes->getURINoBoundsCheck(i);
nsString value; // Not Auto, because using it to hold nsStringBuffer*
val.ToString(value);
if (nsGkAtoms::a == aName && nsGkAtoms::name == localName) {
// This is an HTML5-incompliant Geckoism.
// Remove when fixing bug 582361
NS_ConvertUTF16toUTF8 cname(value);
NS_ConvertUTF8toUTF16 uv(nsUnescape(cname.BeginWriting()));
aElement->SetAttr(nsuri,
localName,
prefix,
uv,
false);
} else {
aElement->SetAttr(nsuri,
localName,
prefix,
value,
false);
}
}
}
}
nsIContent*
nsHtml5TreeOperation::CreateHTMLElement(
nsAtom* aName,
nsHtml5HtmlAttributes* aAttributes,
mozilla::dom::FromParser aFromParser,
nsNodeInfoManager* aNodeInfoManager,
nsHtml5DocumentBuilder* aBuilder,
mozilla::dom::HTMLContentCreatorFunction aCreator)
{
bool isKeygen = (aName == nsGkAtoms::keygen);
if (MOZ_UNLIKELY(isKeygen)) {
aName = nsGkAtoms::select;
aCreator = NS_NewHTMLSelectElement;
}
RefPtr<dom::NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
aName, nullptr, kNameSpaceID_XHTML, nsIDOMNode::ELEMENT_NODE);
NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
dom::Element* newContent = nullptr;
nsIDocument* document = nodeInfo->GetDocument();
bool willExecuteScript = false;
bool isCustomElement = false;
nsString isValue;
dom::CustomElementDefinition* definition = nullptr;
// Avoid overhead by checking if custom elements pref is enabled or not.
if (nsContentUtils::IsCustomElementsEnabled()) {
if (aAttributes) {
nsHtml5String is = aAttributes->getValue(nsHtml5AttributeName::ATTR_IS);
if (is) {
is.ToString(isValue);
}
}
isCustomElement = (aCreator == NS_NewCustomElement || !isValue.IsEmpty());
if (isCustomElement && aFromParser != dom::FROM_PARSER_FRAGMENT) {
RefPtr<nsAtom> tagAtom = nodeInfo->NameAtom();
RefPtr<nsAtom> typeAtom =
isValue.IsEmpty() ? tagAtom : NS_Atomize(isValue);
definition = nsContentUtils::LookupCustomElementDefinition(document,
nodeInfo->LocalName(), nodeInfo->NamespaceID(), typeAtom);
if (definition) {
willExecuteScript = true;
}
}
}
if (willExecuteScript) { // This will cause custom element constructors to run
AutoSetThrowOnDynamicMarkupInsertionCounter
throwOnDynamicMarkupInsertionCounter(document);
nsHtml5AutoPauseUpdate autoPauseContentUpdate(aBuilder);
{
nsAutoMicroTask mt;
}
dom::AutoCEReaction
autoCEReaction(document->GetDocGroup()->CustomElementReactionsStack(),
nullptr);
nsCOMPtr<dom::Element> newElement;
NS_NewHTMLElement(getter_AddRefs(newElement), nodeInfo.forget(),
aFromParser, (isValue.IsEmpty() ? nullptr : &isValue),
definition);
MOZ_ASSERT(newElement, "Element creation created null pointer.");
newContent = newElement;
aBuilder->HoldElement(newElement.forget());
if (MOZ_UNLIKELY(aName == nsGkAtoms::style || aName == nsGkAtoms::link)) {
nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(newContent));
if (ssle) {
ssle->InitStyleLinkElement(false);
ssle->SetEnableUpdates(false);
}
}
if (!aAttributes) {
return newContent;
}
SetHTMLElementAttributes(newContent, aName, aAttributes);
} else {
nsCOMPtr<dom::Element> newElement;
if (isCustomElement) {
NS_NewHTMLElement(getter_AddRefs(newElement), nodeInfo.forget(),
aFromParser, (isValue.IsEmpty() ? nullptr : &isValue),
definition);
} else {
newElement = aCreator(nodeInfo.forget(), aFromParser);
}
MOZ_ASSERT(newElement, "Element creation created null pointer.");
newContent = newElement;
aBuilder->HoldElement(newElement.forget());
if (MOZ_UNLIKELY(aName == nsGkAtoms::style || aName == nsGkAtoms::link)) {
nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(newContent));
if (ssle) {
ssle->InitStyleLinkElement(false);
ssle->SetEnableUpdates(false);
}
} else if (MOZ_UNLIKELY(isKeygen)) {
// Adapted from CNavDTD
nsresult rv;
nsCOMPtr<nsIFormProcessor> theFormProcessor =
do_GetService(kFormProcessorCID, &rv);
if (NS_FAILED(rv)) {
return newContent;
}
nsTArray<nsString> theContent;
nsAutoString theAttribute;
(void) theFormProcessor->ProvideContent(NS_LITERAL_STRING("select"),
theContent,
theAttribute);
newContent->SetAttr(kNameSpaceID_None,
nsGkAtoms::moztype,
nullptr,
theAttribute,
false);
RefPtr<dom::NodeInfo> optionNodeInfo = aNodeInfoManager->GetNodeInfo(
nsGkAtoms::option, nullptr, kNameSpaceID_XHTML, nsIDOMNode::ELEMENT_NODE);
for (uint32_t i = 0; i < theContent.Length(); ++i) {
RefPtr<dom::NodeInfo> ni = optionNodeInfo;
nsCOMPtr<dom::Element> optionElt =
NS_NewHTMLOptionElement(ni.forget(), aFromParser);
RefPtr<nsTextNode> optionText = new nsTextNode(aNodeInfoManager);
(void) optionText->SetText(theContent[i], false);
optionElt->AppendChildTo(optionText, false);
newContent->AppendChildTo(optionElt, false);
}
newContent->DoneAddingChildren(false);
}
if (!aAttributes) {
return newContent;
}
SetHTMLElementAttributes(newContent, aName, aAttributes);
}
return newContent;
}
nsIContent*
nsHtml5TreeOperation::CreateSVGElement(
nsAtom* aName,
nsHtml5HtmlAttributes* aAttributes,
mozilla::dom::FromParser aFromParser,
nsNodeInfoManager* aNodeInfoManager,
nsHtml5DocumentBuilder* aBuilder,
mozilla::dom::SVGContentCreatorFunction aCreator)
{
nsCOMPtr<nsIContent> newElement;
if (MOZ_LIKELY(aNodeInfoManager->SVGEnabled())) {
RefPtr<dom::NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
aName, nullptr, kNameSpaceID_SVG, nsIDOMNode::ELEMENT_NODE);
MOZ_ASSERT(nodeInfo, "Got null nodeinfo.");
mozilla::DebugOnly<nsresult> rv =
aCreator(getter_AddRefs(newElement), nodeInfo.forget(), aFromParser);
MOZ_ASSERT(NS_SUCCEEDED(rv) && newElement);
} else {
RefPtr<dom::NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
aName, nullptr, kNameSpaceID_disabled_SVG, nsIDOMNode::ELEMENT_NODE);
MOZ_ASSERT(nodeInfo, "Got null nodeinfo.");
// The mismatch between NS_NewXMLElement and SVGContentCreatorFunction
// argument types is annoying.
nsCOMPtr<dom::Element> xmlElement;
mozilla::DebugOnly<nsresult> rv =
NS_NewXMLElement(getter_AddRefs(xmlElement), nodeInfo.forget());
MOZ_ASSERT(NS_SUCCEEDED(rv) && xmlElement);
newElement = xmlElement;
}
dom::Element* newContent = newElement->AsElement();
aBuilder->HoldElement(newElement.forget());
if (MOZ_UNLIKELY(aName == nsGkAtoms::style)) {
nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(newContent));
if (ssle) {
ssle->InitStyleLinkElement(false);
ssle->SetEnableUpdates(false);
}
}
if (!aAttributes) {
return newContent;
}
int32_t len = aAttributes->getLength();
for (int32_t i = 0; i < len; i++) {
nsHtml5String val = aAttributes->getValueNoBoundsCheck(i);
nsAtom* klass = val.MaybeAsAtom();
if (klass) {
newContent->SetSingleClassFromParser(klass);
} else {
// prefix doesn't need regetting. it is always null or a static atom
// local name is never null
RefPtr<nsAtom> localName =
Reget(aAttributes->getLocalNameNoBoundsCheck(i));
RefPtr<nsAtom> prefix = aAttributes->getPrefixNoBoundsCheck(i);
int32_t nsuri = aAttributes->getURINoBoundsCheck(i);
nsString value; // Not Auto, because using it to hold nsStringBuffer*
val.ToString(value);
newContent->SetAttr(nsuri, localName, prefix, value, false);
}
}
return newContent;
}
nsIContent*
nsHtml5TreeOperation::CreateMathMLElement(nsAtom* aName,
nsHtml5HtmlAttributes* aAttributes,
nsNodeInfoManager* aNodeInfoManager,
nsHtml5DocumentBuilder* aBuilder)
{
nsCOMPtr<dom::Element> newElement;
if (MOZ_LIKELY(aNodeInfoManager->MathMLEnabled())) {
RefPtr<dom::NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
aName, nullptr, kNameSpaceID_MathML, nsIDOMNode::ELEMENT_NODE);
NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
mozilla::DebugOnly<nsresult> rv =
NS_NewMathMLElement(getter_AddRefs(newElement), nodeInfo.forget());
MOZ_ASSERT(NS_SUCCEEDED(rv) && newElement);
} else {
RefPtr<dom::NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
aName, nullptr, kNameSpaceID_disabled_MathML, nsIDOMNode::ELEMENT_NODE);
NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
mozilla::DebugOnly<nsresult> rv =
NS_NewXMLElement(getter_AddRefs(newElement), nodeInfo.forget());
MOZ_ASSERT(NS_SUCCEEDED(rv) && newElement);
}
dom::Element* newContent = newElement;
aBuilder->HoldElement(newElement.forget());
if (!aAttributes) {
return newContent;
}
int32_t len = aAttributes->getLength();
for (int32_t i = 0; i < len; i++) {
nsHtml5String val = aAttributes->getValueNoBoundsCheck(i);
nsAtom* klass = val.MaybeAsAtom();
if (klass) {
newContent->SetSingleClassFromParser(klass);
} else {
// prefix doesn't need regetting. it is always null or a static atom
// local name is never null
RefPtr<nsAtom> localName =
Reget(aAttributes->getLocalNameNoBoundsCheck(i));
RefPtr<nsAtom> prefix = aAttributes->getPrefixNoBoundsCheck(i);
int32_t nsuri = aAttributes->getURINoBoundsCheck(i);
nsString value; // Not Auto, because using it to hold nsStringBuffer*
val.ToString(value);
newContent->SetAttr(nsuri, localName, prefix, value, false);
}
}
return newContent;
}
void
nsHtml5TreeOperation::SetFormElement(nsIContent* aNode, nsIContent* aParent)
{
nsCOMPtr<nsIFormControl> formControl(do_QueryInterface(aNode));
RefPtr<dom::HTMLImageElement> domImageElement = dom::HTMLImageElement::FromContentOrNull(aNode);
// NS_ASSERTION(formControl, "Form-associated element did not implement nsIFormControl.");
// TODO: uncomment the above line when <keygen> (bug 101019) is supported by Gecko
nsCOMPtr<nsIDOMHTMLFormElement> formElement(do_QueryInterface(aParent));
NS_ASSERTION(formElement, "The form element doesn't implement nsIDOMHTMLFormElement.");
// avoid crashing on <keygen>
if (formControl &&
!aNode->HasAttr(kNameSpaceID_None, nsGkAtoms::form)) {
formControl->SetForm(formElement);
} else if (domImageElement) {
domImageElement->SetForm(formElement);
}
}
nsresult
nsHtml5TreeOperation::FosterParentText(nsIContent* aStackParent,
char16_t* aBuffer,
uint32_t aLength,
nsIContent* aTable,
nsHtml5DocumentBuilder* aBuilder)
{
MOZ_ASSERT(aBuilder);
MOZ_ASSERT(aBuilder->IsInDocUpdate());
nsresult rv = NS_OK;
nsIContent* foster = aTable->GetParent();
if (IsElementOrTemplateContent(foster)) {
nsHtml5OtherDocUpdate update(foster->OwnerDoc(),
aBuilder->GetDocument());
uint32_t pos = foster->IndexOf(aTable);
nsIContent* previousSibling = aTable->GetPreviousSibling();
if (previousSibling && previousSibling->IsNodeOfType(nsINode::eTEXT)) {
return AppendTextToTextNode(aBuffer,
aLength,
previousSibling,
aBuilder);
}
nsNodeInfoManager* nodeInfoManager = aStackParent->OwnerDoc()->NodeInfoManager();
RefPtr<nsTextNode> text = new nsTextNode(nodeInfoManager);
NS_ASSERTION(text, "Infallible malloc failed?");
rv = text->SetText(aBuffer, aLength, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = foster->InsertChildAt(text, pos, false);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::ContentInserted(foster, text);
return rv;
}
return AppendText(aBuffer, aLength, aStackParent, aBuilder);
}
nsresult
nsHtml5TreeOperation::AppendComment(nsIContent* aParent,
char16_t* aBuffer,
int32_t aLength,
nsHtml5DocumentBuilder* aBuilder)
{
nsNodeInfoManager* nodeInfoManager = aParent->OwnerDoc()->NodeInfoManager();
RefPtr<dom::Comment> comment = new dom::Comment(nodeInfoManager);
NS_ASSERTION(comment, "Infallible malloc failed?");
nsresult rv = comment->SetText(aBuffer, aLength, false);
NS_ENSURE_SUCCESS(rv, rv);
return Append(comment, aParent, aBuilder);
}
nsresult
nsHtml5TreeOperation::AppendCommentToDocument(char16_t* aBuffer,
int32_t aLength,
nsHtml5DocumentBuilder* aBuilder)
{
RefPtr<dom::Comment> comment =
new dom::Comment(aBuilder->GetNodeInfoManager());
NS_ASSERTION(comment, "Infallible malloc failed?");
nsresult rv = comment->SetText(aBuffer, aLength, false);
NS_ENSURE_SUCCESS(rv, rv);
return AppendToDocument(comment, aBuilder);
}
nsresult
nsHtml5TreeOperation::AppendDoctypeToDocument(nsAtom* aName,
const nsAString& aPublicId,
const nsAString& aSystemId,
nsHtml5DocumentBuilder* aBuilder)
{
// Adapted from nsXMLContentSink
// Create a new doctype node
nsCOMPtr<nsIDOMDocumentType> docType;
NS_NewDOMDocumentType(getter_AddRefs(docType),
aBuilder->GetNodeInfoManager(),
aName,
aPublicId,
aSystemId,
VoidString());
NS_ASSERTION(docType, "Doctype creation failed.");
nsCOMPtr<nsIContent> asContent = do_QueryInterface(docType);
return AppendToDocument(asContent, aBuilder);
}
nsIContent*
nsHtml5TreeOperation::GetDocumentFragmentForTemplate(nsIContent* aNode)
{
dom::HTMLTemplateElement* tempElem =
static_cast<dom::HTMLTemplateElement*>(aNode);
RefPtr<dom::DocumentFragment> frag = tempElem->Content();
return frag;
}
nsIContent*
nsHtml5TreeOperation::GetFosterParent(nsIContent* aTable, nsIContent* aStackParent)
{
nsIContent* tableParent = aTable->GetParent();
return IsElementOrTemplateContent(tableParent) ? tableParent : aStackParent;
}
void
nsHtml5TreeOperation::PreventScriptExecution(nsIContent* aNode)
{
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(aNode);
if (sele) {
sele->PreventExecution();
} else {
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled, "Node didn't QI to script, but SVG wasn't disabled.");
}
}
void
nsHtml5TreeOperation::DoneAddingChildren(nsIContent* aNode)
{
aNode->DoneAddingChildren(aNode->HasParserNotified());
}
void
nsHtml5TreeOperation::DoneCreatingElement(nsIContent* aNode)
{
aNode->DoneCreatingElement();
}
void
nsHtml5TreeOperation::SvgLoad(nsIContent* aNode)
{
nsCOMPtr<nsIRunnable> event = new nsHtml5SVGLoadDispatcher(aNode);
if (NS_FAILED(aNode->OwnerDoc()->Dispatch(
TaskCategory::Network, event.forget()))) {
NS_WARNING("failed to dispatch svg load dispatcher");
}
}
void
nsHtml5TreeOperation::MarkMalformedIfScript(nsIContent* aNode)
{
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(aNode);
if (sele) {
// Make sure to serialize this script correctly, for nice round tripping.
sele->SetIsMalformed();
}
}
nsresult
nsHtml5TreeOperation::Perform(nsHtml5TreeOpExecutor* aBuilder,
nsIContent** aScriptElement,
bool* aInterrupted,
bool* aStreamEnded)
{
switch(mOpCode) {
case eTreeOpUninitialized: {
MOZ_CRASH("eTreeOpUninitialized");
}
case eTreeOpAppend: {
nsIContent* node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
return Append(node, parent, aBuilder);
}
case eTreeOpDetach: {
nsIContent* node = *(mOne.node);
Detach(node, aBuilder);
return NS_OK;
}
case eTreeOpAppendChildrenToNewParent: {
nsCOMPtr<nsIContent> node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
return AppendChildrenToNewParent(node, parent, aBuilder);
}
case eTreeOpFosterParent: {
nsIContent* node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
nsIContent* table = *(mThree.node);
return FosterParent(node, parent, table, aBuilder);
}
case eTreeOpAppendToDocument: {
nsIContent* node = *(mOne.node);
nsresult rv = AppendToDocument(node, aBuilder);
aBuilder->PauseDocUpdate(aInterrupted);
return rv;
}
case eTreeOpAddAttributes: {
nsIContent* node = *(mOne.node);
nsHtml5HtmlAttributes* attributes = mTwo.attributes;
return AddAttributes(node, attributes, aBuilder);
}
case eTreeOpDocumentMode: {
aBuilder->SetDocumentMode(mOne.mode);
return NS_OK;
}
case eTreeOpCreateHTMLElementNetwork:
case eTreeOpCreateHTMLElementNotNetwork: {
nsIContent** target = mOne.node;
mozilla::dom::HTMLContentCreatorFunction creator = mFour.htmlCreator;
RefPtr<nsAtom> name = Reget(mTwo.atom);
nsHtml5HtmlAttributes* attributes = mThree.attributes;
nsIContent* intendedParent = mFive.node ? *(mFive.node) : nullptr;
// intendedParent == nullptr is a special case where the
// intended parent is the document.
nsNodeInfoManager* nodeInfoManager =
intendedParent ? intendedParent->OwnerDoc()->NodeInfoManager()
: aBuilder->GetNodeInfoManager();
*target = CreateHTMLElement(name,
attributes,
mOpCode == eTreeOpCreateHTMLElementNetwork
? dom::FROM_PARSER_NETWORK
: dom::FROM_PARSER_DOCUMENT_WRITE,
nodeInfoManager,
aBuilder,
creator);
return NS_OK;
}
case eTreeOpCreateSVGElementNetwork:
case eTreeOpCreateSVGElementNotNetwork: {
nsIContent** target = mOne.node;
mozilla::dom::SVGContentCreatorFunction creator = mFour.svgCreator;
RefPtr<nsAtom> name = Reget(mTwo.atom);
nsHtml5HtmlAttributes* attributes = mThree.attributes;
nsIContent* intendedParent = mFive.node ? *(mFive.node) : nullptr;
// intendedParent == nullptr is a special case where the
// intended parent is the document.
nsNodeInfoManager* nodeInfoManager =
intendedParent ? intendedParent->OwnerDoc()->NodeInfoManager()
: aBuilder->GetNodeInfoManager();
*target = CreateSVGElement(name,
attributes,
mOpCode == eTreeOpCreateSVGElementNetwork
? dom::FROM_PARSER_NETWORK
: dom::FROM_PARSER_DOCUMENT_WRITE,
nodeInfoManager,
aBuilder,
creator);
return NS_OK;
}
case eTreeOpCreateMathMLElement: {
nsIContent** target = mOne.node;
RefPtr<nsAtom> name = Reget(mTwo.atom);
nsHtml5HtmlAttributes* attributes = mThree.attributes;
nsIContent* intendedParent = mFive.node ? *(mFive.node) : nullptr;
// intendedParent == nullptr is a special case where the
// intended parent is the document.
nsNodeInfoManager* nodeInfoManager = intendedParent ?
intendedParent->OwnerDoc()->NodeInfoManager() :
aBuilder->GetNodeInfoManager();
*target =
CreateMathMLElement(name, attributes, nodeInfoManager, aBuilder);
return NS_OK;
}
case eTreeOpSetFormElement: {
nsIContent* node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
SetFormElement(node, parent);
return NS_OK;
}
case eTreeOpAppendText: {
nsIContent* parent = *mOne.node;
char16_t* buffer = mTwo.unicharPtr;
uint32_t length = mFour.integer;
return AppendText(buffer, length, parent, aBuilder);
}
case eTreeOpFosterParentText: {
nsIContent* stackParent = *mOne.node;
char16_t* buffer = mTwo.unicharPtr;
uint32_t length = mFour.integer;
nsIContent* table = *mThree.node;
return FosterParentText(stackParent, buffer, length, table, aBuilder);
}
case eTreeOpAppendComment: {
nsIContent* parent = *mOne.node;
char16_t* buffer = mTwo.unicharPtr;
int32_t length = mFour.integer;
return AppendComment(parent, buffer, length, aBuilder);
}
case eTreeOpAppendCommentToDocument: {
char16_t* buffer = mTwo.unicharPtr;
int32_t length = mFour.integer;
return AppendCommentToDocument(buffer, length, aBuilder);
}
case eTreeOpAppendDoctypeToDocument: {
RefPtr<nsAtom> name = Reget(mOne.atom);
nsHtml5TreeOperationStringPair* pair = mTwo.stringPair;
nsString publicId;
nsString systemId;
pair->Get(publicId, systemId);
return AppendDoctypeToDocument(name, publicId, systemId, aBuilder);
}
case eTreeOpGetDocumentFragmentForTemplate: {
nsIContent* node = *(mOne.node);
*mTwo.node = GetDocumentFragmentForTemplate(node);
return NS_OK;
}
case eTreeOpGetFosterParent: {
nsIContent* table = *(mOne.node);
nsIContent* stackParent = *(mTwo.node);
nsIContent* fosterParent = GetFosterParent(table, stackParent);
*mThree.node = fosterParent;
return NS_OK;
}
case eTreeOpMarkAsBroken: {
return mOne.result;
}
case eTreeOpRunScript: {
nsIContent* node = *(mOne.node);
nsAHtml5TreeBuilderState* snapshot = mTwo.state;
if (snapshot) {
aBuilder->InitializeDocWriteParserState(snapshot, mFour.integer);
}
*aScriptElement = node;
return NS_OK;
}
case eTreeOpRunScriptAsyncDefer: {
nsIContent* node = *(mOne.node);
aBuilder->RunScript(node);
return NS_OK;
}
case eTreeOpPreventScriptExecution: {
nsIContent* node = *(mOne.node);
PreventScriptExecution(node);
return NS_OK;
}
case eTreeOpDoneAddingChildren: {
nsIContent* node = *(mOne.node);
node->DoneAddingChildren(node->HasParserNotified());
return NS_OK;
}
case eTreeOpDoneCreatingElement: {
nsIContent* node = *(mOne.node);
DoneCreatingElement(node);
return NS_OK;
}
case eTreeOpSetDocumentCharset: {
auto encoding = WrapNotNull(mOne.encoding);
int32_t charsetSource = mFour.integer;
aBuilder->SetDocumentCharsetAndSource(encoding, charsetSource);
return NS_OK;
}
case eTreeOpNeedsCharsetSwitchTo: {
auto encoding = WrapNotNull(mOne.encoding);
int32_t charsetSource = mFour.integer;
int32_t lineNumber = mTwo.integer;
aBuilder->NeedsCharsetSwitchTo(encoding, charsetSource, (uint32_t)lineNumber);
return NS_OK;
}
case eTreeOpUpdateStyleSheet: {
nsIContent* node = *(mOne.node);
aBuilder->UpdateStyleSheet(node);
return NS_OK;
}
case eTreeOpProcessMeta: {
nsIContent* node = *(mOne.node);
return aBuilder->ProcessMETATag(node);
}
case eTreeOpProcessOfflineManifest: {
char16_t* str = mOne.unicharPtr;
nsDependentString dependentString(str);
aBuilder->ProcessOfflineManifest(dependentString);
return NS_OK;
}
case eTreeOpMarkMalformedIfScript: {
nsIContent* node = *(mOne.node);
MarkMalformedIfScript(node);
return NS_OK;
}
case eTreeOpStreamEnded: {
*aStreamEnded = true;
return NS_OK;
}
case eTreeOpSetStyleLineNumber: {
nsIContent* node = *(mOne.node);
nsCOMPtr<nsIStyleSheetLinkingElement> ssle = do_QueryInterface(node);
if (ssle) {
ssle->SetLineNumber(mFour.integer);
} else {
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled, "Node didn't QI to style, but SVG wasn't disabled.");
}
return NS_OK;
}
case eTreeOpSetScriptLineNumberAndFreeze: {
nsIContent* node = *(mOne.node);
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(node);
if (sele) {
sele->SetScriptLineNumber(mFour.integer);
sele->FreezeUriAsyncDefer();
} else {
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled, "Node didn't QI to script, but SVG wasn't disabled.");
}
return NS_OK;
}
case eTreeOpSvgLoad: {
nsIContent* node = *(mOne.node);
SvgLoad(node);
return NS_OK;
}
case eTreeOpMaybeComplainAboutCharset: {
char* msgId = mOne.charPtr;
bool error = mTwo.integer;
int32_t lineNumber = mThree.integer;
aBuilder->MaybeComplainAboutCharset(msgId, error, (uint32_t)lineNumber);
return NS_OK;
}
case eTreeOpDisableEncodingMenu: {
nsIDocument* doc = aBuilder->GetDocument();
doc->DisableEncodingMenu();
return NS_OK;
}
case eTreeOpAddClass: {
nsIContent* node = *(mOne.node);
char16_t* str = mTwo.unicharPtr;
nsDependentString depStr(str);
// See viewsource.css for the possible classes
nsAutoString klass;
node->GetAttr(kNameSpaceID_None, nsGkAtoms::_class, klass);
if (!klass.IsEmpty()) {
klass.Append(' ');
klass.Append(depStr);
node->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, klass, true);
} else {
node->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, depStr, true);
}
return NS_OK;
}
case eTreeOpAddViewSourceHref: {
nsIContent* node = *mOne.node;
char16_t* buffer = mTwo.unicharPtr;
int32_t length = mFour.integer;
nsDependentString relative(buffer, length);
nsIDocument* doc = aBuilder->GetDocument();
auto encoding = doc->GetDocumentCharacterSet();
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_NewURI(getter_AddRefs(uri),
relative,
encoding,
aBuilder->GetViewSourceBaseURI());
NS_ENSURE_SUCCESS(rv, NS_OK);
// Reuse the fix for bug 467852
// URLs that execute script (e.g. "javascript:" URLs) should just be
// ignored. There's nothing reasonable we can do with them, and allowing
// them to execute in the context of the view-source window presents a
// security risk. Just return the empty string in this case.
bool openingExecutesScript = false;
rv = NS_URIChainHasFlags(uri,
nsIProtocolHandler::URI_OPENING_EXECUTES_SCRIPT,
&openingExecutesScript);
if (NS_FAILED(rv) || openingExecutesScript) {
return NS_OK;
}
nsAutoCString viewSourceUrl;
// URLs that return data (e.g. "http:" URLs) should be prefixed with
// "view-source:". URLs that don't return data should just be returned
// undecorated.
bool doesNotReturnData = false;
rv = NS_URIChainHasFlags(uri,
nsIProtocolHandler::URI_DOES_NOT_RETURN_DATA,
&doesNotReturnData);
NS_ENSURE_SUCCESS(rv, NS_OK);
if (!doesNotReturnData) {
viewSourceUrl.AssignLiteral("view-source:");
}
nsAutoCString spec;
rv = uri->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
viewSourceUrl.Append(spec);
nsAutoString utf16;
CopyUTF8toUTF16(viewSourceUrl, utf16);
node->SetAttr(kNameSpaceID_None, nsGkAtoms::href, utf16, true);
return NS_OK;
}
case eTreeOpAddViewSourceBase: {
char16_t* buffer = mTwo.unicharPtr;
int32_t length = mFour.integer;
nsDependentString baseUrl(buffer, length);
aBuilder->AddBase(baseUrl);
return NS_OK;
}
case eTreeOpAddError: {
nsIContent* node = *(mOne.node);
char* msgId = mTwo.charPtr;
RefPtr<nsAtom> atom = Reget(mThree.atom);
RefPtr<nsAtom> otherAtom = Reget(mFour.atom);
// See viewsource.css for the possible classes in addition to "error".
nsAutoString klass;
node->GetAttr(kNameSpaceID_None, nsGkAtoms::_class, klass);
if (!klass.IsEmpty()) {
klass.AppendLiteral(" error");
node->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, klass, true);
} else {
node->SetAttr(kNameSpaceID_None,
nsGkAtoms::_class,
NS_LITERAL_STRING("error"),
true);
}
nsresult rv;
nsAutoString message;
if (otherAtom) {
const char16_t* params[] = { atom->GetUTF16String(),
otherAtom->GetUTF16String() };
rv = nsContentUtils::FormatLocalizedString(
nsContentUtils::eHTMLPARSER_PROPERTIES, msgId, params, message);
NS_ENSURE_SUCCESS(rv, NS_OK);
} else if (atom) {
const char16_t* params[] = { atom->GetUTF16String() };
rv = nsContentUtils::FormatLocalizedString(
nsContentUtils::eHTMLPARSER_PROPERTIES, msgId, params, message);
NS_ENSURE_SUCCESS(rv, NS_OK);
} else {
rv = nsContentUtils::GetLocalizedString(
nsContentUtils::eHTMLPARSER_PROPERTIES, msgId, message);
NS_ENSURE_SUCCESS(rv, NS_OK);
}
nsAutoString title;
node->GetAttr(kNameSpaceID_None, nsGkAtoms::title, title);
if (!title.IsEmpty()) {
title.Append('\n');
title.Append(message);
node->SetAttr(kNameSpaceID_None, nsGkAtoms::title, title, true);
} else {
node->SetAttr(kNameSpaceID_None, nsGkAtoms::title, message, true);
}
return rv;
}
case eTreeOpAddLineNumberId: {
nsIContent* node = *(mOne.node);
int32_t lineNumber = mFour.integer;
nsAutoString val(NS_LITERAL_STRING("line"));
val.AppendInt(lineNumber);
node->SetAttr(kNameSpaceID_None, nsGkAtoms::id, val, true);
return NS_OK;
}
case eTreeOpStartLayout: {
aBuilder->StartLayout(aInterrupted); // this causes a notification flush anyway
return NS_OK;
}
default: {
MOZ_CRASH("Bogus tree op");
}
}
return NS_OK; // keep compiler happy
}
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