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gecko-dev/parser/html/nsHtml5TreeOperation.cpp

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28 KiB
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/* -*- 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 "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 "nsTraceRefcnt.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/Element.h"
#include "nsHtml5SVGLoadDispatcher.h"
#include "nsIURI.h"
#include "nsIProtocolHandler.h"
#include "nsNetUtil.h"
#include "nsIHTMLDocument.h"
#include "mozilla/Likely.h"
namespace dom = mozilla::dom;
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 NS_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:
nsIDocument* mDocument;
};
nsHtml5TreeOperation::nsHtml5TreeOperation()
#ifdef DEBUG
: mOpCode(eTreeOpUninitialized)
#endif
{
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 eTreeOpCreateElementNetwork:
case eTreeOpCreateElementNotNetwork:
delete mThree.attributes;
break;
case eTreeOpAppendDoctypeToDocument:
delete mTwo.stringPair;
break;
case eTreeOpFosterParentText:
case eTreeOpAppendText:
case eTreeOpAppendComment:
case eTreeOpAppendCommentToDocument:
case eTreeOpAddViewSourceHref:
delete[] mTwo.unicharPtr;
break;
case eTreeOpSetDocumentCharset:
case eTreeOpNeedsCharsetSwitchTo:
delete[] mOne.charPtr;
break;
case eTreeOpProcessOfflineManifest:
nsMemory::Free(mOne.unicharPtr);
break;
default: // keep the compiler happy
break;
}
}
nsresult
nsHtml5TreeOperation::AppendTextToTextNode(const PRUnichar* aBuffer,
uint32_t aLength,
nsIContent* aTextNode,
nsHtml5TreeOpExecutor* aBuilder)
{
NS_PRECONDITION(aTextNode, "Got null text node.");
if (aBuilder->HaveNotified(aTextNode)) {
// This text node has already been notified on, so it's necessary to
// notify on the append
nsresult rv = NS_OK;
uint32_t oldLength = aTextNode->TextLength();
CharacterDataChangeInfo info = {
true,
oldLength,
oldLength,
aLength
};
nsNodeUtils::CharacterDataWillChange(aTextNode, &info);
rv = aTextNode->AppendText(aBuffer, aLength, false);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::CharacterDataChanged(aTextNode, &info);
return rv;
}
return aTextNode->AppendText(aBuffer, aLength, false);
}
nsresult
nsHtml5TreeOperation::AppendText(const PRUnichar* aBuffer,
uint32_t aLength,
nsIContent* aParent,
nsHtml5TreeOpExecutor* 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);
}
nsCOMPtr<nsIContent> text;
NS_NewTextNode(getter_AddRefs(text), aBuilder->GetNodeInfoManager());
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,
nsHtml5TreeOpExecutor* aBuilder)
{
nsresult rv = NS_OK;
nsIDocument* executorDoc = aBuilder->GetDocument();
NS_ASSERTION(executorDoc, "Null doc on executor");
nsIDocument* parentDoc = aParent->OwnerDoc();
NS_ASSERTION(parentDoc, "Null owner doc on old node.");
if (MOZ_LIKELY(executorDoc == parentDoc)) {
// the usual case. the parent is in the parser's doc
rv = aParent->AppendChildTo(aNode, false);
if (NS_SUCCEEDED(rv)) {
aBuilder->PostPendingAppendNotification(aParent, aNode);
}
return rv;
}
// The parent has been moved to another doc
parentDoc->BeginUpdate(UPDATE_CONTENT_MODEL);
uint32_t childCount = aParent->GetChildCount();
rv = aParent->AppendChildTo(aNode, false);
if (NS_SUCCEEDED(rv)) {
nsNodeUtils::ContentAppended(aParent, aNode, childCount);
}
parentDoc->EndUpdate(UPDATE_CONTENT_MODEL);
return rv;
}
nsresult
nsHtml5TreeOperation::AppendToDocument(nsIContent* aNode,
nsHtml5TreeOpExecutor* aBuilder)
{
nsresult rv = NS_OK;
aBuilder->FlushPendingAppendNotifications();
nsIDocument* doc = aBuilder->GetDocument();
uint32_t childCount = doc->GetChildCount();
rv = doc->AppendChildTo(aNode, false);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::ContentInserted(doc, aNode, childCount);
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
"Someone forgot to block scripts");
if (aNode->IsElement()) {
nsContentUtils::AddScriptRunner(
new nsDocElementCreatedNotificationRunner(doc));
}
return rv;
}
nsresult
nsHtml5TreeOperation::Perform(nsHtml5TreeOpExecutor* aBuilder,
nsIContent** aScriptElement)
{
nsresult rv = NS_OK;
switch(mOpCode) {
case eTreeOpAppend: {
nsIContent* node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
return Append(node, parent, aBuilder);
}
case eTreeOpDetach: {
nsIContent* node = *(mOne.node);
aBuilder->FlushPendingAppendNotifications();
nsCOMPtr<nsIContent> parent = node->GetParent();
if (parent) {
nsHtml5OtherDocUpdate update(parent->OwnerDoc(),
aBuilder->GetDocument());
int32_t pos = parent->IndexOf(node);
NS_ASSERTION((pos >= 0), "Element not found as child of its parent");
parent->RemoveChildAt(pos, true);
}
return NS_OK;
}
case eTreeOpAppendChildrenToNewParent: {
nsCOMPtr<nsIContent> node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
aBuilder->FlushPendingAppendNotifications();
nsHtml5OtherDocUpdate update(parent->OwnerDoc(),
aBuilder->GetDocument());
uint32_t childCount = parent->GetChildCount();
bool didAppend = false;
while (node->HasChildren()) {
nsCOMPtr<nsIContent> child = node->GetFirstChild();
node->RemoveChildAt(0, true);
rv = parent->AppendChildTo(child, false);
NS_ENSURE_SUCCESS(rv, rv);
didAppend = true;
}
if (didAppend) {
nsNodeUtils::ContentAppended(parent, parent->GetChildAt(childCount),
childCount);
}
return rv;
}
case eTreeOpFosterParent: {
nsIContent* node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
nsIContent* table = *(mThree.node);
nsIContent* foster = table->GetParent();
if (foster && foster->IsElement()) {
aBuilder->FlushPendingAppendNotifications();
nsHtml5OtherDocUpdate update(foster->OwnerDoc(),
aBuilder->GetDocument());
uint32_t pos = foster->IndexOf(table);
rv = foster->InsertChildAt(node, pos, false);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::ContentInserted(foster, node, pos);
return rv;
}
return Append(node, parent, aBuilder);
}
case eTreeOpAppendToDocument: {
nsIContent* node = *(mOne.node);
return AppendToDocument(node, aBuilder);
}
case eTreeOpAddAttributes: {
dom::Element* node = (*(mOne.node))->AsElement();
nsHtml5HtmlAttributes* attributes = mTwo.attributes;
nsHtml5OtherDocUpdate update(node->OwnerDoc(),
aBuilder->GetDocument());
int32_t len = attributes->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
nsCOMPtr<nsIAtom> localName =
Reget(attributes->getLocalNameNoBoundsCheck(i));
int32_t nsuri = attributes->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
node->SetAttr(nsuri,
localName,
attributes->getPrefixNoBoundsCheck(i),
*(attributes->getValueNoBoundsCheck(i)),
true);
// XXX what to do with nsresult?
}
}
return rv;
}
case eTreeOpCreateElementNetwork:
case eTreeOpCreateElementNotNetwork: {
nsIContent** target = mOne.node;
int32_t ns = mFour.integer;
nsCOMPtr<nsIAtom> name = Reget(mTwo.atom);
nsHtml5HtmlAttributes* attributes = mThree.attributes;
bool isKeygen = (name == nsHtml5Atoms::keygen && ns == kNameSpaceID_XHTML);
if (MOZ_UNLIKELY(isKeygen)) {
name = nsHtml5Atoms::select;
}
nsCOMPtr<nsIContent> newContent;
nsCOMPtr<nsINodeInfo> nodeInfo = aBuilder->GetNodeInfoManager()->
GetNodeInfo(name, nullptr, ns, nsIDOMNode::ELEMENT_NODE);
NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
NS_NewElement(getter_AddRefs(newContent),
nodeInfo.forget(),
(mOpCode == eTreeOpCreateElementNetwork ?
dom::FROM_PARSER_NETWORK
: (aBuilder->BelongsToStringParser() ?
dom::FROM_PARSER_FRAGMENT :
dom::FROM_PARSER_DOCUMENT_WRITE)));
NS_ASSERTION(newContent, "Element creation created null pointer.");
aBuilder->HoldElement(*target = newContent);
if (MOZ_UNLIKELY(name == nsHtml5Atoms::style || name == nsHtml5Atoms::link)) {
nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(newContent));
if (ssle) {
ssle->InitStyleLinkElement(false);
ssle->SetEnableUpdates(false);
}
} else if (MOZ_UNLIKELY(isKeygen)) {
// Adapted from CNavDTD
nsCOMPtr<nsIFormProcessor> theFormProcessor =
do_GetService(kFormProcessorCID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsTArray<nsString> theContent;
nsAutoString theAttribute;
(void) theFormProcessor->ProvideContent(NS_LITERAL_STRING("select"),
theContent,
theAttribute);
newContent->SetAttr(kNameSpaceID_None,
nsGkAtoms::moztype,
nullptr,
theAttribute,
false);
nsCOMPtr<nsINodeInfo> optionNodeInfo =
aBuilder->GetNodeInfoManager()->GetNodeInfo(nsHtml5Atoms::option,
nullptr,
kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
for (uint32_t i = 0; i < theContent.Length(); ++i) {
nsCOMPtr<nsIContent> optionElt;
nsCOMPtr<nsINodeInfo> ni = optionNodeInfo;
NS_NewElement(getter_AddRefs(optionElt),
ni.forget(),
(mOpCode == eTreeOpCreateElementNetwork ?
dom::FROM_PARSER_NETWORK
: (aBuilder->BelongsToStringParser() ?
dom::FROM_PARSER_FRAGMENT :
dom::FROM_PARSER_DOCUMENT_WRITE)));
nsCOMPtr<nsIContent> optionText;
NS_NewTextNode(getter_AddRefs(optionText),
aBuilder->GetNodeInfoManager());
(void) optionText->SetText(theContent[i], false);
optionElt->AppendChildTo(optionText, false);
newContent->AppendChildTo(optionElt, false);
newContent->DoneAddingChildren(false);
}
}
if (!attributes) {
return rv;
}
int32_t len = attributes->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
nsCOMPtr<nsIAtom> localName =
Reget(attributes->getLocalNameNoBoundsCheck(i));
if (ns == kNameSpaceID_XHTML &&
nsHtml5Atoms::a == name &&
nsHtml5Atoms::name == localName) {
// This is an HTML5-incompliant Geckoism.
// Remove when fixing bug 582361
NS_ConvertUTF16toUTF8 cname(*(attributes->getValueNoBoundsCheck(i)));
NS_ConvertUTF8toUTF16 uv(nsUnescape(cname.BeginWriting()));
newContent->SetAttr(attributes->getURINoBoundsCheck(i),
localName,
attributes->getPrefixNoBoundsCheck(i),
uv,
false);
} else {
newContent->SetAttr(attributes->getURINoBoundsCheck(i),
localName,
attributes->getPrefixNoBoundsCheck(i),
*(attributes->getValueNoBoundsCheck(i)),
false);
}
}
return rv;
}
case eTreeOpSetFormElement: {
nsIContent* node = *(mOne.node);
nsIContent* parent = *(mTwo.node);
nsCOMPtr<nsIFormControl> formControl(do_QueryInterface(node));
// 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(parent));
NS_ASSERTION(formElement, "The form element doesn't implement nsIDOMHTMLFormElement.");
// avoid crashing on <keygen>
if (formControl &&
!node->HasAttr(kNameSpaceID_None, nsGkAtoms::form)) {
formControl->SetForm(formElement);
}
return rv;
}
case eTreeOpAppendText: {
nsIContent* parent = *mOne.node;
PRUnichar* buffer = mTwo.unicharPtr;
uint32_t length = mFour.integer;
return AppendText(buffer, length, parent, aBuilder);
}
case eTreeOpAppendIsindexPrompt: {
nsIContent* parent = *mOne.node;
nsXPIDLString prompt;
nsresult rv =
nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
"IsIndexPromptWithSpace", prompt);
uint32_t len = prompt.Length();
if (NS_FAILED(rv)) {
return rv;
}
if (!len) {
// Don't bother appending a zero-length text node.
return NS_OK;
}
return AppendText(prompt.BeginReading(), len, parent, aBuilder);
}
case eTreeOpFosterParentText: {
nsIContent* stackParent = *mOne.node;
PRUnichar* buffer = mTwo.unicharPtr;
uint32_t length = mFour.integer;
nsIContent* table = *mThree.node;
nsIContent* foster = table->GetParent();
if (foster && foster->IsElement()) {
aBuilder->FlushPendingAppendNotifications();
nsHtml5OtherDocUpdate update(foster->OwnerDoc(),
aBuilder->GetDocument());
uint32_t pos = foster->IndexOf(table);
nsIContent* previousSibling = table->GetPreviousSibling();
if (previousSibling && previousSibling->IsNodeOfType(nsINode::eTEXT)) {
return AppendTextToTextNode(buffer,
length,
previousSibling,
aBuilder);
}
nsCOMPtr<nsIContent> text;
NS_NewTextNode(getter_AddRefs(text), aBuilder->GetNodeInfoManager());
NS_ASSERTION(text, "Infallible malloc failed?");
rv = text->SetText(buffer, length, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = foster->InsertChildAt(text, pos, false);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::ContentInserted(foster, text, pos);
return rv;
}
return AppendText(buffer, length, stackParent, aBuilder);
}
case eTreeOpAppendComment: {
nsIContent* parent = *mOne.node;
PRUnichar* buffer = mTwo.unicharPtr;
int32_t length = mFour.integer;
nsCOMPtr<nsIContent> comment;
NS_NewCommentNode(getter_AddRefs(comment), aBuilder->GetNodeInfoManager());
NS_ASSERTION(comment, "Infallible malloc failed?");
rv = comment->SetText(buffer, length, false);
NS_ENSURE_SUCCESS(rv, rv);
return Append(comment, parent, aBuilder);
}
case eTreeOpAppendCommentToDocument: {
PRUnichar* buffer = mTwo.unicharPtr;
int32_t length = mFour.integer;
nsCOMPtr<nsIContent> comment;
NS_NewCommentNode(getter_AddRefs(comment), aBuilder->GetNodeInfoManager());
NS_ASSERTION(comment, "Infallible malloc failed?");
rv = comment->SetText(buffer, length, false);
NS_ENSURE_SUCCESS(rv, rv);
return AppendToDocument(comment, aBuilder);
}
case eTreeOpAppendDoctypeToDocument: {
nsCOMPtr<nsIAtom> name = Reget(mOne.atom);
nsHtml5TreeOperationStringPair* pair = mTwo.stringPair;
nsString publicId;
nsString systemId;
pair->Get(publicId, systemId);
// Adapted from nsXMLContentSink
// Create a new doctype node
nsCOMPtr<nsIDOMDocumentType> docType;
nsAutoString voidString;
voidString.SetIsVoid(true);
NS_NewDOMDocumentType(getter_AddRefs(docType),
aBuilder->GetNodeInfoManager(),
name,
publicId,
systemId,
voidString);
NS_ASSERTION(docType, "Doctype creation failed.");
nsCOMPtr<nsIContent> asContent = do_QueryInterface(docType);
return AppendToDocument(asContent, aBuilder);
}
case eTreeOpMarkAsBroken: {
aBuilder->MarkAsBroken(NS_ERROR_OUT_OF_MEMORY);
return rv;
}
case eTreeOpRunScript: {
nsIContent* node = *(mOne.node);
nsAHtml5TreeBuilderState* snapshot = mTwo.state;
if (snapshot) {
aBuilder->InitializeDocWriteParserState(snapshot, mFour.integer);
}
*aScriptElement = node;
return rv;
}
case eTreeOpRunScriptAsyncDefer: {
nsIContent* node = *(mOne.node);
aBuilder->RunScript(node);
return rv;
}
case eTreeOpPreventScriptExecution: {
nsIContent* node = *(mOne.node);
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(node);
MOZ_ASSERT(sele);
sele->PreventExecution();
return rv;
}
case eTreeOpDoneAddingChildren: {
nsIContent* node = *(mOne.node);
node->DoneAddingChildren(aBuilder->HaveNotified(node));
return rv;
}
case eTreeOpDoneCreatingElement: {
nsIContent* node = *(mOne.node);
node->DoneCreatingElement();
return rv;
}
case eTreeOpFlushPendingAppendNotifications: {
aBuilder->FlushPendingAppendNotifications();
return rv;
}
case eTreeOpSetDocumentCharset: {
char* str = mOne.charPtr;
int32_t charsetSource = mFour.integer;
nsDependentCString dependentString(str);
aBuilder->SetDocumentCharsetAndSource(dependentString, charsetSource);
return rv;
}
case eTreeOpNeedsCharsetSwitchTo: {
char* str = mOne.charPtr;
int32_t charsetSource = mFour.integer;
int32_t lineNumber = mTwo.integer;
aBuilder->NeedsCharsetSwitchTo(str, charsetSource, (uint32_t)lineNumber);
return rv;
}
case eTreeOpUpdateStyleSheet: {
nsIContent* node = *(mOne.node);
aBuilder->FlushPendingAppendNotifications();
aBuilder->UpdateStyleSheet(node);
return rv;
}
case eTreeOpProcessMeta: {
nsIContent* node = *(mOne.node);
rv = aBuilder->ProcessMETATag(node);
return rv;
}
case eTreeOpProcessOfflineManifest: {
PRUnichar* str = mOne.unicharPtr;
nsDependentString dependentString(str);
aBuilder->ProcessOfflineManifest(dependentString);
return rv;
}
case eTreeOpMarkMalformedIfScript: {
nsIContent* node = *(mOne.node);
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(node);
if (sele) {
// Make sure to serialize this script correctly, for nice round tripping.
sele->SetIsMalformed();
}
return rv;
}
case eTreeOpStreamEnded: {
aBuilder->DidBuildModel(false); // this causes a notifications flush anyway
return rv;
}
case eTreeOpStartLayout: {
aBuilder->StartLayout(); // this causes a notification flush anyway
return rv;
}
case eTreeOpDocumentMode: {
aBuilder->SetDocumentMode(mOne.mode);
return rv;
}
case eTreeOpSetStyleLineNumber: {
nsIContent* node = *(mOne.node);
nsCOMPtr<nsIStyleSheetLinkingElement> ssle = do_QueryInterface(node);
NS_ASSERTION(ssle, "Node didn't QI to style.");
ssle->SetLineNumber(mFour.integer);
return rv;
}
case eTreeOpSetScriptLineNumberAndFreeze: {
nsIContent* node = *(mOne.node);
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(node);
NS_ASSERTION(sele, "Node didn't QI to script.");
sele->SetScriptLineNumber(mFour.integer);
sele->FreezeUriAsyncDefer();
return rv;
}
case eTreeOpSvgLoad: {
nsIContent* node = *(mOne.node);
nsCOMPtr<nsIRunnable> event = new nsHtml5SVGLoadDispatcher(node);
if (NS_FAILED(NS_DispatchToMainThread(event))) {
NS_WARNING("failed to dispatch svg load dispatcher");
}
return rv;
}
case eTreeOpMaybeComplainAboutCharset: {
char* msgId = mOne.charPtr;
bool error = mTwo.integer;
int32_t lineNumber = mThree.integer;
aBuilder->MaybeComplainAboutCharset(msgId, error, (uint32_t)lineNumber);
return rv;
}
case eTreeOpAddClass: {
nsIContent* node = *(mOne.node);
PRUnichar* 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 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 rv;
}
case eTreeOpAddViewSourceHref: {
nsIContent* node = *mOne.node;
PRUnichar* buffer = mTwo.unicharPtr;
int32_t length = mFour.integer;
nsDependentString relative(buffer, length);
nsIDocument* doc = aBuilder->GetDocument();
const nsCString& charset = doc->GetDocumentCharacterSet();
nsCOMPtr<nsIURI> uri;
rv = NS_NewURI(getter_AddRefs(uri),
relative,
charset.get(),
aBuilder->GetViewSourceBaseURI());
NS_ENSURE_SUCCESS(rv, rv);
// 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;
uri->GetSpec(spec);
viewSourceUrl.Append(spec);
nsAutoString utf16;
CopyUTF8toUTF16(viewSourceUrl, utf16);
node->SetAttr(kNameSpaceID_None, nsGkAtoms::href, utf16, true);
return rv;
}
case eTreeOpAddError: {
nsIContent* node = *(mOne.node);
char* msgId = mTwo.charPtr;
nsCOMPtr<nsIAtom> atom = Reget(mThree.atom);
nsCOMPtr<nsIAtom> 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.Append(NS_LITERAL_STRING(" error"));
node->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, klass, true);
} else {
node->SetAttr(kNameSpaceID_None,
nsGkAtoms::_class,
NS_LITERAL_STRING("error"),
true);
}
nsXPIDLString message;
if (otherAtom) {
const PRUnichar* params[] = { atom->GetUTF16String(),
otherAtom->GetUTF16String() };
rv = nsContentUtils::FormatLocalizedString(
nsContentUtils::eHTMLPARSER_PROPERTIES, msgId, params, message);
NS_ENSURE_SUCCESS(rv, rv);
} else if (atom) {
const PRUnichar* params[] = { atom->GetUTF16String() };
rv = nsContentUtils::FormatLocalizedString(
nsContentUtils::eHTMLPARSER_PROPERTIES, msgId, params, message);
NS_ENSURE_SUCCESS(rv, rv);
} else {
rv = nsContentUtils::GetLocalizedString(
nsContentUtils::eHTMLPARSER_PROPERTIES, msgId, message);
NS_ENSURE_SUCCESS(rv, rv);
}
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;
}
default: {
NS_NOTREACHED("Bogus tree op");
}
}
return rv; // keep compiler happy
}
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