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gecko-dev/dom/html/nsHTMLDocument.cpp

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92 KiB
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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 "nsHTMLDocument.h"
#include "nsIContentPolicy.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/HTMLAllCollection.h"
#include "mozilla/dom/FeaturePolicyUtils.h"
#include "nsCommandManager.h"
#include "nsCOMPtr.h"
#include "nsGlobalWindow.h"
#include "nsString.h"
#include "nsPrintfCString.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsGlobalWindowInner.h"
#include "nsIDocumentLoader.h"
#include "nsIHTMLContentSink.h"
#include "nsIXMLContentSink.h"
#include "nsHTMLParts.h"
#include "nsHTMLStyleSheet.h"
#include "nsGkAtoms.h"
#include "nsPresContext.h"
#include "nsPIDOMWindow.h"
#include "nsDOMString.h"
#include "nsIStreamListener.h"
#include "nsIURI.h"
#include "nsIURIMutator.h"
#include "nsIIOService.h"
#include "nsNetUtil.h"
#include "nsIContentViewer.h"
#include "nsDocShell.h"
#include "nsDocShellLoadTypes.h"
#include "nsIWebNavigation.h"
#include "nsIBaseWindow.h"
#include "nsIScriptContext.h"
#include "nsIXPConnect.h"
#include "nsContentList.h"
#include "nsError.h"
#include "nsIPrincipal.h"
#include "nsJSPrincipals.h"
#include "nsIScriptSecurityManager.h"
#include "nsAttrName.h"
#include "nsNodeUtils.h"
#include "nsNetCID.h"
#include "nsIServiceManager.h"
#include "nsIConsoleService.h"
#include "nsIComponentManager.h"
#include "nsParserCIID.h"
#include "mozilla/parser/PrototypeDocumentParser.h"
#include "mozilla/dom/PrototypeDocumentContentSink.h"
#include "nsNameSpaceManager.h"
#include "nsGenericHTMLElement.h"
#include "mozilla/css/Loader.h"
#include "nsIHttpChannel.h"
#include "nsIFile.h"
#include "nsFrameSelection.h"
#include "nsContentUtils.h"
#include "nsJSUtils.h"
#include "DocumentInlines.h"
#include "nsIDocumentEncoder.h" //for outputting selection
#include "nsICachingChannel.h"
#include "nsIContentViewer.h"
#include "nsIScriptElement.h"
#include "nsIScriptError.h"
#include "nsIMutableArray.h"
#include "nsArrayUtils.h"
#include "nsIEffectiveTLDService.h"
// AHMED 12-2
#include "nsBidiUtils.h"
#include "mozilla/dom/FallbackEncoding.h"
#include "mozilla/Encoding.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/HTMLEditor.h"
#include "mozilla/IdentifierMapEntry.h"
#include "mozilla/LoadInfo.h"
#include "nsIEditingSession.h"
#include "nsNodeInfoManager.h"
#include "nsIPlaintextEditor.h"
#include "nsIEditorStyleSheets.h"
#include "nsIInlineSpellChecker.h"
#include "nsRange.h"
#include "mozAutoDocUpdate.h"
#include "nsCCUncollectableMarker.h"
#include "nsHtml5Module.h"
#include "mozilla/dom/Element.h"
#include "mozilla/Preferences.h"
#include "nsMimeTypes.h"
#include "nsIRequest.h"
#include "nsHtml5TreeOpExecutor.h"
#include "nsHtml5Parser.h"
#include "nsSandboxFlags.h"
#include "nsIImageDocument.h"
#include "mozilla/dom/HTMLBodyElement.h"
#include "mozilla/dom/HTMLDocumentBinding.h"
#include "mozilla/dom/Selection.h"
#include "mozilla/dom/ShadowIncludingTreeIterator.h"
#include "nsCharsetSource.h"
#include "nsIStringBundle.h"
#include "nsFocusManager.h"
#include "nsIFrame.h"
#include "nsIContent.h"
#include "nsIStructuredCloneContainer.h"
#include "nsLayoutStylesheetCache.h"
#include "mozilla/StyleSheet.h"
#include "mozilla/StyleSheetInlines.h"
#include "mozilla/Unused.h"
#include "nsCommandParams.h"
using namespace mozilla;
using namespace mozilla::dom;
#define NS_MAX_DOCUMENT_WRITE_DEPTH 20
#include "prtime.h"
//#define DEBUG_charset
static NS_DEFINE_CID(kCParserCID, NS_PARSER_CID);
// this function will return false if the command is not recognized
// inCommandID will be converted as necessary for internal operations
// inParam will be converted as necessary for internal operations
// outParam will be Empty if no parameter is needed or if returning a boolean
// outIsBoolean will determine whether to send param as a boolean or string
// outBooleanParam will not be set unless outIsBoolean
static bool ConvertToMidasInternalCommand(const nsAString& inCommandID,
const nsAString& inParam,
nsACString& outCommandID,
nsACString& outParam, bool& isBoolean,
bool& boolValue);
static bool ConvertToMidasInternalCommand(const nsAString& inCommandID,
nsACString& outCommandID);
// ==================================================================
// =
// ==================================================================
static bool IsAsciiCompatible(const Encoding* aEncoding) {
return aEncoding->IsAsciiCompatible() || aEncoding == ISO_2022_JP_ENCODING;
}
nsresult NS_NewHTMLDocument(Document** aInstancePtrResult, bool aLoadedAsData) {
RefPtr<nsHTMLDocument> doc = new nsHTMLDocument();
nsresult rv = doc->Init();
if (NS_FAILED(rv)) {
*aInstancePtrResult = nullptr;
return rv;
}
doc->SetLoadedAsData(aLoadedAsData);
doc.forget(aInstancePtrResult);
return NS_OK;
}
nsHTMLDocument::nsHTMLDocument()
: Document("text/html"),
mContentListHolder(nullptr),
mNumForms(0),
mWriteLevel(0),
mLoadFlags(0),
mTooDeepWriteRecursion(false),
mDisableDocWrite(false),
mWarnedWidthHeight(false),
mContentEditableCount(0),
mEditingState(EditingState::eOff),
mPendingMaybeEditingStateChanged(false),
mHasBeenEditable(false),
mIsPlainText(false) {
mType = eHTML;
mDefaultElementType = kNameSpaceID_XHTML;
mCompatMode = eCompatibility_NavQuirks;
}
nsHTMLDocument::~nsHTMLDocument() {}
NS_IMPL_CYCLE_COLLECTION_INHERITED(nsHTMLDocument, Document, mAll,
mMidasCommandManager)
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(nsHTMLDocument, Document,
nsIHTMLDocument)
JSObject* nsHTMLDocument::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLDocument_Binding::Wrap(aCx, this, aGivenProto);
}
nsresult nsHTMLDocument::Init() {
nsresult rv = Document::Init();
NS_ENSURE_SUCCESS(rv, rv);
// Now reset the compatibility mode of the CSSLoader
// to match our compat mode.
CSSLoader()->SetCompatibilityMode(mCompatMode);
return NS_OK;
}
void nsHTMLDocument::Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup) {
Document::Reset(aChannel, aLoadGroup);
if (aChannel) {
aChannel->GetLoadFlags(&mLoadFlags);
}
}
void nsHTMLDocument::ResetToURI(nsIURI* aURI, nsILoadGroup* aLoadGroup,
nsIPrincipal* aPrincipal,
nsIPrincipal* aStoragePrincipal) {
mLoadFlags = nsIRequest::LOAD_NORMAL;
Document::ResetToURI(aURI, aLoadGroup, aPrincipal, aStoragePrincipal);
mImages = nullptr;
mApplets = nullptr;
mEmbeds = nullptr;
mLinks = nullptr;
mAnchors = nullptr;
mScripts = nullptr;
mForms = nullptr;
// Make the content type default to "text/html", we are a HTML
// document, after all. Once we start getting data, this may be
// changed.
SetContentTypeInternal(nsDependentCString("text/html"));
}
void nsHTMLDocument::TryHintCharset(nsIContentViewer* aCv,
int32_t& aCharsetSource,
NotNull<const Encoding*>& aEncoding) {
if (aCv) {
int32_t requestCharsetSource;
nsresult rv = aCv->GetHintCharacterSetSource(&requestCharsetSource);
if (NS_SUCCEEDED(rv) && kCharsetUninitialized != requestCharsetSource) {
auto requestCharset = aCv->GetHintCharset();
aCv->SetHintCharacterSetSource((int32_t)(kCharsetUninitialized));
if (requestCharsetSource <= aCharsetSource) return;
if (requestCharset && IsAsciiCompatible(requestCharset)) {
aCharsetSource = requestCharsetSource;
aEncoding = WrapNotNull(requestCharset);
}
}
}
}
void nsHTMLDocument::TryUserForcedCharset(nsIContentViewer* aCv,
nsIDocShell* aDocShell,
int32_t& aCharsetSource,
NotNull<const Encoding*>& aEncoding) {
if (kCharsetFromUserForced <= aCharsetSource) return;
// mCharacterSet not updated yet for channel, so check aEncoding, too.
if (WillIgnoreCharsetOverride() || !IsAsciiCompatible(aEncoding)) {
return;
}
const Encoding* forceCharsetFromDocShell = nullptr;
if (aCv) {
// XXX mailnews-only
forceCharsetFromDocShell = aCv->GetForceCharset();
}
if (forceCharsetFromDocShell && IsAsciiCompatible(forceCharsetFromDocShell)) {
aEncoding = WrapNotNull(forceCharsetFromDocShell);
aCharsetSource = kCharsetFromUserForced;
return;
}
if (aDocShell) {
// This is the Character Encoding menu code path in Firefox
auto encoding = nsDocShell::Cast(aDocShell)->GetForcedCharset();
if (encoding) {
if (!IsAsciiCompatible(encoding)) {
return;
}
aEncoding = WrapNotNull(encoding);
aCharsetSource = kCharsetFromUserForced;
aDocShell->SetForcedCharset(NS_LITERAL_CSTRING(""));
}
}
}
void nsHTMLDocument::TryCacheCharset(nsICachingChannel* aCachingChannel,
int32_t& aCharsetSource,
NotNull<const Encoding*>& aEncoding) {
nsresult rv;
if (kCharsetFromCache <= aCharsetSource) {
return;
}
nsCString cachedCharset;
rv = aCachingChannel->GetCacheTokenCachedCharset(cachedCharset);
if (NS_FAILED(rv) || cachedCharset.IsEmpty()) {
return;
}
// The canonical names changed, so the cache may have an old name.
const Encoding* encoding = Encoding::ForLabelNoReplacement(cachedCharset);
if (!encoding) {
return;
}
// Check IsAsciiCompatible() even in the cache case, because the value
// might be stale and in the case of a stale charset that is not a rough
// ASCII superset, the parser has no way to recover.
if (!encoding->IsAsciiCompatible() && encoding != ISO_2022_JP_ENCODING) {
return;
}
aEncoding = WrapNotNull(encoding);
aCharsetSource = kCharsetFromCache;
}
void nsHTMLDocument::TryParentCharset(nsIDocShell* aDocShell,
int32_t& aCharsetSource,
NotNull<const Encoding*>& aEncoding) {
if (!aDocShell) {
return;
}
if (aCharsetSource >= kCharsetFromParentForced) {
return;
}
int32_t parentSource;
const Encoding* parentCharset;
nsCOMPtr<nsIPrincipal> parentPrincipal;
aDocShell->GetParentCharset(parentCharset, &parentSource,
getter_AddRefs(parentPrincipal));
if (!parentCharset) {
return;
}
if (kCharsetFromParentForced == parentSource ||
kCharsetFromUserForced == parentSource) {
if (WillIgnoreCharsetOverride() ||
!IsAsciiCompatible(aEncoding) || // if channel said UTF-16
!IsAsciiCompatible(parentCharset)) {
return;
}
aEncoding = WrapNotNull(parentCharset);
aCharsetSource = kCharsetFromParentForced;
return;
}
if (aCharsetSource >= kCharsetFromParentFrame) {
return;
}
if (kCharsetFromCache <= parentSource) {
// Make sure that's OK
if (!NodePrincipal()->Equals(parentPrincipal) ||
!IsAsciiCompatible(parentCharset)) {
return;
}
aEncoding = WrapNotNull(parentCharset);
aCharsetSource = kCharsetFromParentFrame;
}
}
void nsHTMLDocument::TryTLD(int32_t& aCharsetSource,
NotNull<const Encoding*>& aEncoding) {
if (aCharsetSource >= kCharsetFromTopLevelDomain) {
return;
}
if (!FallbackEncoding::sGuessFallbackFromTopLevelDomain) {
return;
}
if (!mDocumentURI) {
return;
}
nsAutoCString host;
mDocumentURI->GetAsciiHost(host);
if (host.IsEmpty()) {
return;
}
// First let's see if the host is DNS-absolute and ends with a dot and
// get rid of that one.
if (host.Last() == '.') {
host.SetLength(host.Length() - 1);
if (host.IsEmpty()) {
return;
}
}
// If we still have a dot, the host is weird, so let's continue only
// if we have something other than a dot now.
if (host.Last() == '.') {
return;
}
int32_t index = host.RFindChar('.');
if (index == kNotFound) {
// We have an intranet host, Gecko-internal URL or an IPv6 address.
return;
}
// Since the string didn't end with a dot and we found a dot,
// there is at least one character between the dot and the end of
// the string, so taking the substring below is safe.
nsAutoCString tld;
ToLowerCase(Substring(host, index + 1, host.Length() - (index + 1)), tld);
// Reject generic TLDs and country TLDs that need more research
if (!FallbackEncoding::IsParticipatingTopLevelDomain(tld)) {
return;
}
// Check if we have an IPv4 address
bool seenNonDigit = false;
for (size_t i = 0; i < tld.Length(); ++i) {
char c = tld.CharAt(i);
if (c < '0' || c > '9') {
seenNonDigit = true;
break;
}
}
if (!seenNonDigit) {
return;
}
aCharsetSource = kCharsetFromTopLevelDomain;
aEncoding = FallbackEncoding::FromTopLevelDomain(tld);
}
void nsHTMLDocument::TryFallback(int32_t& aCharsetSource,
NotNull<const Encoding*>& aEncoding) {
if (kCharsetFromFallback <= aCharsetSource) return;
aCharsetSource = kCharsetFromFallback;
aEncoding = FallbackEncoding::FromLocale();
}
// Using a prototype document is only allowed with chrome privilege.
bool ShouldUsePrototypeDocument(nsIChannel* aChannel, Document* aDoc) {
if (!aChannel || !aDoc ||
!StaticPrefs::dom_prototype_document_cache_enabled()) {
return false;
}
if (!nsContentUtils::IsChromeDoc(aDoc)) {
return false;
}
nsCOMPtr<nsIURI> originalURI;
aChannel->GetOriginalURI(getter_AddRefs(originalURI));
return IsChromeURI(originalURI);
}
nsresult nsHTMLDocument::StartDocumentLoad(const char* aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener** aDocListener,
bool aReset, nsIContentSink* aSink) {
if (!aCommand) {
MOZ_ASSERT(false, "Command is mandatory");
return NS_ERROR_INVALID_POINTER;
}
if (aSink) {
MOZ_ASSERT(false, "Got a sink override. Should not happen for HTML doc.");
return NS_ERROR_INVALID_ARG;
}
if (mType != eHTML) {
MOZ_ASSERT(mType == eXHTML);
MOZ_ASSERT(false, "Must not set HTML doc to XHTML mode before load start.");
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
nsAutoCString contentType;
aChannel->GetContentType(contentType);
bool view =
!strcmp(aCommand, "view") || !strcmp(aCommand, "external-resource");
bool viewSource = !strcmp(aCommand, "view-source");
bool asData = !strcmp(aCommand, kLoadAsData);
if (!(view || viewSource || asData)) {
MOZ_ASSERT(false, "Bad parser command");
return NS_ERROR_INVALID_ARG;
}
bool html = contentType.EqualsLiteral(TEXT_HTML);
bool xhtml = !html && (contentType.EqualsLiteral(APPLICATION_XHTML_XML) ||
contentType.EqualsLiteral(APPLICATION_WAPXHTML_XML));
mIsPlainText =
!html && !xhtml && nsContentUtils::IsPlainTextType(contentType);
if (!(html || xhtml || mIsPlainText || viewSource)) {
MOZ_ASSERT(false, "Channel with bad content type.");
return NS_ERROR_INVALID_ARG;
}
bool forceUtf8 =
mIsPlainText && nsContentUtils::IsUtf8OnlyPlainTextType(contentType);
bool loadAsHtml5 = true;
if (!viewSource && xhtml) {
// We're parsing XHTML as XML, remember that.
mType = eXHTML;
SetCompatibilityMode(eCompatibility_FullStandards);
loadAsHtml5 = false;
}
// TODO: Proper about:blank treatment is bug 543435
if (loadAsHtml5 && view) {
// mDocumentURI hasn't been set, yet, so get the URI from the channel
nsCOMPtr<nsIURI> uri;
aChannel->GetOriginalURI(getter_AddRefs(uri));
// Adapted from nsDocShell:
// GetSpec can be expensive for some URIs, so check the scheme first.
bool isAbout = false;
if (uri && NS_SUCCEEDED(uri->SchemeIs("about", &isAbout)) && isAbout) {
if (uri->GetSpecOrDefault().EqualsLiteral("about:blank")) {
loadAsHtml5 = false;
}
}
}
nsresult rv = Document::StartDocumentLoad(aCommand, aChannel, aLoadGroup,
aContainer, aDocListener, aReset);
if (NS_FAILED(rv)) {
return rv;
}
// Store the security info for future use.
aChannel->GetSecurityInfo(getter_AddRefs(mSecurityInfo));
nsCOMPtr<nsIURI> uri;
rv = aChannel->GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsICachingChannel> cachingChan = do_QueryInterface(aChannel);
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aContainer));
bool loadWithPrototype = false;
if (loadAsHtml5) {
mParser = nsHtml5Module::NewHtml5Parser();
if (mIsPlainText) {
if (viewSource) {
mParser->MarkAsNotScriptCreated("view-source-plain");
} else {
mParser->MarkAsNotScriptCreated("plain-text");
}
} else if (viewSource && !html) {
mParser->MarkAsNotScriptCreated("view-source-xml");
} else {
mParser->MarkAsNotScriptCreated(aCommand);
}
} else if (xhtml && ShouldUsePrototypeDocument(aChannel, this)) {
loadWithPrototype = true;
nsCOMPtr<nsIURI> originalURI;
aChannel->GetOriginalURI(getter_AddRefs(originalURI));
mParser = new mozilla::parser::PrototypeDocumentParser(originalURI, this);
} else {
mParser = do_CreateInstance(kCParserCID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
}
// Look for the parent document. Note that at this point we don't have our
// content viewer set up yet, and therefore do not have a useful
// mParentDocument.
// in this block of code, if we get an error result, we return it
// but if we get a null pointer, that's perfectly legal for parent
// and parentContentViewer
nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
if (docShell) {
docShell->GetSameTypeParent(getter_AddRefs(parentAsItem));
}
nsCOMPtr<nsIDocShell> parent(do_QueryInterface(parentAsItem));
nsCOMPtr<nsIContentViewer> parentContentViewer;
if (parent) {
rv = parent->GetContentViewer(getter_AddRefs(parentContentViewer));
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIContentViewer> cv;
if (docShell) {
docShell->GetContentViewer(getter_AddRefs(cv));
}
if (!cv) {
cv = parentContentViewer.forget();
}
nsAutoCString urlSpec;
uri->GetSpec(urlSpec);
#ifdef DEBUG_charset
printf("Determining charset for %s\n", urlSpec.get());
#endif
// These are the charset source and charset for our document
int32_t charsetSource;
auto encoding = UTF_8_ENCODING;
// For error reporting and referrer policy setting
nsHtml5TreeOpExecutor* executor = nullptr;
if (loadAsHtml5) {
executor = static_cast<nsHtml5TreeOpExecutor*>(mParser->GetContentSink());
if (mReferrerPolicySet) {
// CSP may have set the referrer policy, so a speculative parser should
// start with the new referrer policy.
executor->SetSpeculationReferrerPolicy(
static_cast<ReferrerPolicy>(mReferrerPolicy));
}
}
if (forceUtf8) {
charsetSource = kCharsetFromUtf8OnlyMime;
} else if (!IsHTMLDocument() || !docShell) { // no docshell for text/html XHR
charsetSource =
IsHTMLDocument() ? kCharsetFromFallback : kCharsetFromDocTypeDefault;
TryChannelCharset(aChannel, charsetSource, encoding, executor);
} else {
NS_ASSERTION(docShell, "Unexpected null value");
charsetSource = kCharsetUninitialized;
// The following will try to get the character encoding from various
// sources. Each Try* function will return early if the source is already
// at least as large as any of the sources it might look at. Some of
// these functions (like TryHintCharset and TryParentCharset) can set
// charsetSource to various values depending on where the charset they
// end up finding originally comes from.
// Try the channel's charset (e.g., charset from HTTP
// "Content-Type" header) first. This way, we get to reject overrides in
// TryParentCharset and TryUserForcedCharset if the channel said UTF-16.
// This is to avoid socially engineered XSS by adding user-supplied
// content to a UTF-16 site such that the byte have a dangerous
// interpretation as ASCII and the user can be lured to using the
// charset menu.
TryChannelCharset(aChannel, charsetSource, encoding, executor);
TryUserForcedCharset(cv, docShell, charsetSource, encoding);
TryHintCharset(cv, charsetSource, encoding); // XXX mailnews-only
TryParentCharset(docShell, charsetSource, encoding);
if (cachingChan && !urlSpec.IsEmpty()) {
TryCacheCharset(cachingChan, charsetSource, encoding);
}
TryTLD(charsetSource, encoding);
TryFallback(charsetSource, encoding);
}
SetDocumentCharacterSetSource(charsetSource);
SetDocumentCharacterSet(encoding);
if (cachingChan) {
nsAutoCString charset;
encoding->Name(charset);
rv = cachingChan->SetCacheTokenCachedCharset(charset);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "cannot SetMetaDataElement");
rv = NS_OK; // don't propagate error
}
// Set the parser as the stream listener for the document loader...
rv = NS_OK;
nsCOMPtr<nsIStreamListener> listener = mParser->GetStreamListener();
listener.forget(aDocListener);
#ifdef DEBUG_charset
printf(" charset = %s source %d\n", charset.get(), charsetSource);
#endif
mParser->SetDocumentCharset(encoding, charsetSource);
mParser->SetCommand(aCommand);
if (!IsHTMLDocument()) {
MOZ_ASSERT(!loadAsHtml5);
if (loadWithPrototype) {
nsCOMPtr<nsIContentSink> sink;
NS_NewPrototypeDocumentContentSink(getter_AddRefs(sink), this, uri,
docShell, aChannel);
mParser->SetContentSink(sink);
} else {
nsCOMPtr<nsIXMLContentSink> xmlsink;
NS_NewXMLContentSink(getter_AddRefs(xmlsink), this, uri, docShell,
aChannel);
mParser->SetContentSink(xmlsink);
}
} else {
if (loadAsHtml5) {
nsHtml5Module::Initialize(mParser, this, uri, docShell, aChannel);
} else {
// about:blank *only*
nsCOMPtr<nsIHTMLContentSink> htmlsink;
NS_NewHTMLContentSink(getter_AddRefs(htmlsink), this, uri, docShell,
aChannel);
mParser->SetContentSink(htmlsink);
}
}
if (mIsPlainText && !nsContentUtils::IsChildOfSameType(this) &&
Preferences::GetBool("plain_text.wrap_long_lines")) {
nsCOMPtr<nsIStringBundleService> bundleService =
do_GetService(NS_STRINGBUNDLE_CONTRACTID, &rv);
NS_ASSERTION(NS_SUCCEEDED(rv) && bundleService,
"The bundle service could not be loaded");
nsCOMPtr<nsIStringBundle> bundle;
rv = bundleService->CreateBundle(
"chrome://global/locale/browser.properties", getter_AddRefs(bundle));
NS_ASSERTION(
NS_SUCCEEDED(rv) && bundle,
"chrome://global/locale/browser.properties could not be loaded");
nsAutoString title;
if (bundle) {
bundle->GetStringFromName("plainText.wordWrap", title);
}
SetSelectedStyleSheetSet(title);
}
// parser the content of the URI
mParser->Parse(uri, nullptr, (void*)this);
return rv;
}
void nsHTMLDocument::BeginLoad() {
if (IsEditingOn()) {
// Reset() blows away all event listeners in the document, and our
// editor relies heavily on those. Midas is turned on, to make it
// work, re-initialize it to give it a chance to add its event
// listeners again.
TurnEditingOff();
EditingStateChanged();
}
Document::BeginLoad();
}
void nsHTMLDocument::EndLoad() {
bool turnOnEditing =
mParser && (HasFlag(NODE_IS_EDITABLE) || mContentEditableCount > 0);
// Note: Document::EndLoad nulls out mParser.
Document::EndLoad();
if (turnOnEditing) {
EditingStateChanged();
}
if (!GetWindow()) {
// This is a document that's not in a window. For example, this could be an
// XMLHttpRequest responseXML document, or a document created via DOMParser
// or DOMImplementation. We don't reach this code normally for such
// documents (which is not obviously correct), but can reach it via
// document.open()/document.close().
//
// Such documents don't fire load events, but per spec should set their
// readyState to "complete" when parsing and all loading of subresources is
// done. Parsing is done now, and documents not in a window don't load
// subresources, so just go ahead and mark ourselves as complete.
SetReadyStateInternal(Document::READYSTATE_COMPLETE,
/* updateTimingInformation = */ false);
// Reset mSkipLoadEventAfterClose just in case.
mSkipLoadEventAfterClose = false;
}
}
void nsHTMLDocument::SetCompatibilityMode(nsCompatibility aMode) {
NS_ASSERTION(IsHTMLDocument() || aMode == eCompatibility_FullStandards,
"Bad compat mode for XHTML document!");
if (mCompatMode == aMode) {
return;
}
mCompatMode = aMode;
CompatibilityModeChanged();
}
bool nsHTMLDocument::UseWidthDeviceWidthFallbackViewport() const {
if (mIsPlainText) {
// Plain text documents are simple enough that font inflation doesn't offer
// any appreciable advantage over defaulting to "width=device-width" and
// subsequently turning on word-wrapping.
return true;
}
return Document::UseWidthDeviceWidthFallbackViewport();
}
Element* nsHTMLDocument::GetUnfocusedKeyEventTarget() {
if (nsGenericHTMLElement* body = GetBody()) {
return body;
}
return Document::GetUnfocusedKeyEventTarget();
}
already_AddRefed<nsIURI> nsHTMLDocument::GetDomainURI() {
nsIPrincipal* principal = NodePrincipal();
nsCOMPtr<nsIURI> uri;
principal->GetDomain(getter_AddRefs(uri));
if (uri) {
return uri.forget();
}
principal->GetURI(getter_AddRefs(uri));
return uri.forget();
}
void nsHTMLDocument::GetDomain(nsAString& aDomain) {
nsCOMPtr<nsIURI> uri = GetDomainURI();
if (!uri) {
aDomain.Truncate();
return;
}
nsAutoCString hostName;
nsresult rv = nsContentUtils::GetHostOrIPv6WithBrackets(uri, hostName);
if (NS_SUCCEEDED(rv)) {
CopyUTF8toUTF16(hostName, aDomain);
} else {
// If we can't get the host from the URI (e.g. about:, javascript:,
// etc), just return an empty string.
aDomain.Truncate();
}
}
already_AddRefed<nsIURI> nsHTMLDocument::CreateInheritingURIForHost(
const nsACString& aHostString) {
if (aHostString.IsEmpty()) {
return nullptr;
}
// Create new URI
nsCOMPtr<nsIURI> uri = GetDomainURI();
if (!uri) {
return nullptr;
}
nsresult rv;
rv = NS_MutateURI(uri)
.SetUserPass(EmptyCString())
.SetPort(-1) // we want to reset the port number if needed.
.SetHostPort(aHostString)
.Finalize(uri);
if (NS_FAILED(rv)) {
return nullptr;
}
return uri.forget();
}
already_AddRefed<nsIURI> nsHTMLDocument::RegistrableDomainSuffixOfInternal(
const nsAString& aNewDomain, nsIURI* aOrigHost) {
if (NS_WARN_IF(!aOrigHost)) {
return nullptr;
}
nsCOMPtr<nsIURI> newURI =
CreateInheritingURIForHost(NS_ConvertUTF16toUTF8(aNewDomain));
if (!newURI) {
// Error: failed to parse input domain
return nullptr;
}
// Check new domain - must be a superdomain of the current host
// For example, a page from foo.bar.com may set domain to bar.com,
// but not to ar.com, baz.com, or fi.foo.bar.com.
nsAutoCString current;
nsAutoCString domain;
if (NS_FAILED(aOrigHost->GetAsciiHost(current))) {
current.Truncate();
}
if (NS_FAILED(newURI->GetAsciiHost(domain))) {
domain.Truncate();
}
bool ok = current.Equals(domain);
if (current.Length() > domain.Length() && StringEndsWith(current, domain) &&
current.CharAt(current.Length() - domain.Length() - 1) == '.') {
// We're golden if the new domain is the current page's base domain or a
// subdomain of it.
nsCOMPtr<nsIEffectiveTLDService> tldService =
do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);
if (!tldService) {
return nullptr;
}
nsAutoCString currentBaseDomain;
ok = NS_SUCCEEDED(
tldService->GetBaseDomain(aOrigHost, 0, currentBaseDomain));
NS_ASSERTION(StringEndsWith(domain, currentBaseDomain) ==
(domain.Length() >= currentBaseDomain.Length()),
"uh-oh! slight optimization wasn't valid somehow!");
ok = ok && domain.Length() >= currentBaseDomain.Length();
}
if (!ok) {
// Error: illegal domain
return nullptr;
}
return CreateInheritingURIForHost(domain);
}
bool nsHTMLDocument::IsRegistrableDomainSuffixOfOrEqualTo(
const nsAString& aHostSuffixString, const nsACString& aOrigHost) {
// https://html.spec.whatwg.org/multipage/browsers.html#is-a-registrable-domain-suffix-of-or-is-equal-to
if (aHostSuffixString.IsEmpty()) {
return false;
}
nsCOMPtr<nsIURI> origURI = CreateInheritingURIForHost(aOrigHost);
if (!origURI) {
// Error: failed to parse input domain
return false;
}
nsCOMPtr<nsIURI> newURI =
RegistrableDomainSuffixOfInternal(aHostSuffixString, origURI);
if (!newURI) {
// Error: illegal domain
return false;
}
return true;
}
void nsHTMLDocument::SetDomain(const nsAString& aDomain, ErrorResult& rv) {
if (mSandboxFlags & SANDBOXED_DOMAIN) {
// We're sandboxed; disallow setting domain
rv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
if (!FeaturePolicyUtils::IsFeatureAllowed(
this, NS_LITERAL_STRING("document-domain"))) {
rv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
if (aDomain.IsEmpty()) {
rv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
nsCOMPtr<nsIURI> uri = GetDomainURI();
if (!uri) {
rv.Throw(NS_ERROR_FAILURE);
return;
}
// Check new domain - must be a superdomain of the current host
// For example, a page from foo.bar.com may set domain to bar.com,
// but not to ar.com, baz.com, or fi.foo.bar.com.
nsCOMPtr<nsIURI> newURI = RegistrableDomainSuffixOfInternal(aDomain, uri);
if (!newURI) {
// Error: illegal domain
rv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
rv = NodePrincipal()->SetDomain(newURI);
}
mozilla::dom::Nullable<mozilla::dom::WindowProxyHolder> nsHTMLDocument::Open(
const nsAString& aURL, const nsAString& aName, const nsAString& aFeatures,
bool aReplace, ErrorResult& rv) {
MOZ_ASSERT(nsContentUtils::CanCallerAccess(this),
"XOW should have caught this!");
nsCOMPtr<nsPIDOMWindowInner> window = GetInnerWindow();
if (!window) {
rv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR);
return nullptr;
}
nsCOMPtr<nsPIDOMWindowOuter> outer =
nsPIDOMWindowOuter::GetFromCurrentInner(window);
if (!outer) {
rv.Throw(NS_ERROR_NOT_INITIALIZED);
return nullptr;
}
RefPtr<nsGlobalWindowOuter> win = nsGlobalWindowOuter::Cast(outer);
nsCOMPtr<nsPIDOMWindowOuter> newWindow;
// XXXbz We ignore aReplace for now.
rv = win->OpenJS(aURL, aName, aFeatures, getter_AddRefs(newWindow));
if (!newWindow) {
return nullptr;
}
return WindowProxyHolder(newWindow->GetBrowsingContext());
}
Document* nsHTMLDocument::Open(const Optional<nsAString>& /* unused */,
const nsAString& /* unused */,
ErrorResult& aError) {
// Implements
// <https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#document-open-steps>
MOZ_ASSERT(nsContentUtils::CanCallerAccess(this),
"XOW should have caught this!");
// Step 1 -- throw if we're an XML document.
if (!IsHTMLDocument() || mDisableDocWrite) {
aError.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
// Step 2 -- throw if dynamic markup insertion should throw.
if (ShouldThrowOnDynamicMarkupInsertion()) {
aError.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
// Step 3 -- get the entry document, so we can use it for security checks.
nsCOMPtr<Document> callerDoc = GetEntryDocument();
if (!callerDoc) {
// If we're called from C++ or in some other way without an originating
// document we can't do a document.open w/o changing the principal of the
// document to something like about:blank (as that's the only sane thing to
// do when we don't know the origin of this call), and since we can't
// change the principals of a document for security reasons we'll have to
// refuse to go ahead with this call.
aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
return nullptr;
}
// Step 4 -- make sure we're same-origin (not just same origin-domain) with
// the entry document.
if (!callerDoc->NodePrincipal()->Equals(NodePrincipal())) {
aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
return nullptr;
}
// Step 5 -- if we have an active parser, just no-op.
// If we already have a parser we ignore the document.open call.
if (mParser || mParserAborted) {
// The WHATWG spec used to say: "If the document has an active parser that
// isn't a script-created parser, and the insertion point associated with
// that parser's input stream is not undefined (that is, it does point to
// somewhere in the input stream), then the method does nothing. Abort these
// steps and return the Document object on which the method was invoked."
// Note that aborting a parser leaves the parser "active" with its insertion
// point "not undefined". We track this using mParserAborted, because
// aborting a parser nulls out mParser.
//
// Actually, the spec says something slightly different now, about having
// an "active parser whose script nesting level is greater than 0". It
// does not mention insertion points at all. Not sure whether it matters
// in practice. It seems like "script nesting level" replaced the
// insertion point concept? Anyway,
// https://bugzilla.mozilla.org/show_bug.cgi?id=1475000 is probably
// relevant here.
return this;
}
// Step 6 -- check for open() during unload. Per spec, this is just a check
// of the ignore-opens-during-unload counter, but our unload event code
// doesn't affect that counter yet (unlike pagehide and beforeunload, which
// do), so we check for unload directly.
if (ShouldIgnoreOpens()) {
return this;
}
nsCOMPtr<nsIDocShell> shell(mDocumentContainer);
if (shell) {
bool inUnload;
shell->GetIsInUnload(&inUnload);
if (inUnload) {
return this;
}
}
// At this point we know this is a valid-enough document.open() call
// and not a no-op. Increment our use counter.
SetDocumentAndPageUseCounter(eUseCounter_custom_DocumentOpen);
// Step 7 -- stop existing navigation of our browsing context (and all other
// loads it's doing) if we're the active document of our browsing context.
// Note that we do not want to stop anything if there is no existing
// navigation.
if (shell && IsCurrentActiveDocument() &&
shell->GetIsAttemptingToNavigate()) {
nsCOMPtr<nsIWebNavigation> webnav(do_QueryInterface(shell));
webnav->Stop(nsIWebNavigation::STOP_NETWORK);
// The Stop call may have cancelled the onload blocker request or
// prevented it from getting added, so we need to make sure it gets added
// to the document again otherwise the document could have a non-zero
// onload block count without the onload blocker request being in the
// loadgroup.
EnsureOnloadBlocker();
}
// Step 8 -- clear event listeners out of our DOM tree
for (nsINode* node : ShadowIncludingTreeIterator(*this)) {
if (EventListenerManager* elm = node->GetExistingListenerManager()) {
elm->RemoveAllListeners();
}
}
// Step 9 -- clear event listeners from our window, if we have one.
//
// Note that we explicitly want the inner window, and only if we're its
// document. We want to do this (per spec) even when we're not the "active
// document", so we can't go through GetWindow(), because it might forward to
// the wrong inner.
if (nsPIDOMWindowInner* win = GetInnerWindow()) {
if (win->GetExtantDoc() == this) {
if (EventListenerManager* elm =
nsGlobalWindowInner::Cast(win)->GetExistingListenerManager()) {
elm->RemoveAllListeners();
}
}
}
// Step 10 -- remove all our DOM kids without firing any mutation events.
DisconnectNodeTree();
// Step 11 -- if we're the current document in our docshell, do the
// equivalent of pushState() with the new URL we should have.
if (shell && IsCurrentActiveDocument()) {
nsCOMPtr<nsIURI> newURI = callerDoc->GetDocumentURI();
if (callerDoc != this) {
nsCOMPtr<nsIURI> noFragmentURI;
nsresult rv = NS_GetURIWithoutRef(newURI, getter_AddRefs(noFragmentURI));
if (NS_WARN_IF(NS_FAILED(rv))) {
aError.Throw(rv);
return nullptr;
}
newURI = noFragmentURI.forget();
}
// UpdateURLAndHistory might do various member-setting, so make sure we're
// holding strong refs to all the refcounted args on the stack. We can
// assume that our caller is holding on to "this" already.
nsCOMPtr<nsIURI> currentURI = GetDocumentURI();
bool equalURIs;
nsresult rv = currentURI->Equals(newURI, &equalURIs);
if (NS_WARN_IF(NS_FAILED(rv))) {
aError.Throw(rv);
return nullptr;
}
nsCOMPtr<nsIStructuredCloneContainer> stateContainer(mStateObjectContainer);
rv = shell->UpdateURLAndHistory(this, newURI, stateContainer, EmptyString(),
/* aReplace = */ true, currentURI,
equalURIs);
if (NS_WARN_IF(NS_FAILED(rv))) {
aError.Throw(rv);
return nullptr;
}
// And use the security info of the caller document as well, since
// it's the thing providing our data.
mSecurityInfo = callerDoc->GetSecurityInfo();
// This is not mentioned in the spec, but I think that's a spec bug. See
// <https://github.com/whatwg/html/issues/4299>. In any case, since our
// URL may be changing away from about:blank here, we really want to unset
// this flag no matter what, since only about:blank can be an initial
// document.
SetIsInitialDocument(false);
// And let our docloader know that it will need to track our load event.
nsDocShell::Cast(shell)->SetDocumentOpenedButNotLoaded();
}
// Per spec nothing happens with our URI in other cases, though note
// <https://github.com/whatwg/html/issues/4286>.
// Note that we don't need to do anything here with base URIs per spec.
// That said, this might be assuming that we implement
// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#fallback-base-url
// correctly, which we don't right now for the about:blank case.
// Step 12, but note <https://github.com/whatwg/html/issues/4292>.
mSkipLoadEventAfterClose = mLoadEventFiring;
// Preliminary to steps 13-16. Set our ready state to uninitialized before
// we do anything else, so we can then proceed to later ready state levels.
SetReadyStateInternal(READYSTATE_UNINITIALIZED,
/* updateTimingInformation = */ false);
// Step 13 -- set our compat mode to standards.
SetCompatibilityMode(eCompatibility_FullStandards);
// Step 14 -- create a new parser associated with document. This also does
// step 16 implicitly.
mParserAborted = false;
mParser = nsHtml5Module::NewHtml5Parser();
nsHtml5Module::Initialize(mParser, this, GetDocumentURI(), shell, nullptr);
if (mReferrerPolicySet) {
// CSP may have set the referrer policy, so a speculative parser should
// start with the new referrer policy.
nsHtml5TreeOpExecutor* executor = nullptr;
executor = static_cast<nsHtml5TreeOpExecutor*>(mParser->GetContentSink());
if (executor && mReferrerPolicySet) {
executor->SetSpeculationReferrerPolicy(
static_cast<ReferrerPolicy>(mReferrerPolicy));
}
}
// Some internal non-spec bookkeeping.
mContentTypeForWriteCalls.AssignLiteral("text/html");
if (shell) {
// Prepare the docshell and the document viewer for the impending
// out-of-band document.write()
shell->PrepareForNewContentModel();
nsCOMPtr<nsIContentViewer> cv;
shell->GetContentViewer(getter_AddRefs(cv));
if (cv) {
cv->LoadStart(this);
}
}
// Step 15.
SetReadyStateInternal(Document::READYSTATE_LOADING,
/* updateTimingInformation = */ false);
// Step 16 happened with step 14 above.
// Step 17.
return this;
}
void nsHTMLDocument::Close(ErrorResult& rv) {
if (!IsHTMLDocument()) {
// No calling document.close() on XHTML!
rv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
if (ShouldThrowOnDynamicMarkupInsertion()) {
rv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
if (!mParser || !mParser->IsScriptCreated()) {
return;
}
++mWriteLevel;
rv = (static_cast<nsHtml5Parser*>(mParser.get()))
->Parse(EmptyString(), nullptr, mContentTypeForWriteCalls, true);
--mWriteLevel;
// Even if that Parse() call failed, do the rest of this method
// XXX Make sure that all the document.written content is
// reflowed. We should remove this call once we change
// nsHTMLDocument::OpenCommon() so that it completely destroys the
// earlier document's content and frame hierarchy. Right now, it
// re-uses the earlier document's root content object and
// corresponding frame objects. These re-used frame objects think
// that they have already been reflowed, so they drop initial
// reflows. For certain cases of document.written content, like a
// frameset document, the dropping of the initial reflow means
// that we end up in document.close() without appended any reflow
// commands to the reflow queue and, consequently, without adding
// the dummy layout request to the load group. Since the dummy
// layout request is not added to the load group, the onload
// handler of the frameset fires before the frames get reflowed
// and loaded. That is the long explanation for why we need this
// one line of code here!
// XXXbz as far as I can tell this may not be needed anymore; all
// the testcases in bug 57636 pass without this line... Leaving
// it be for now, though. In any case, there's no reason to do
// this if we have no presshell, since in that case none of the
// above about reusing frames applies.
//
// XXXhsivonen keeping this around for bug 577508 / 253951 still :-(
if (GetPresShell()) {
FlushPendingNotifications(FlushType::Layout);
}
}
void nsHTMLDocument::WriteCommon(const Sequence<nsString>& aText,
bool aNewlineTerminate,
mozilla::ErrorResult& rv) {
// Fast path the common case
if (aText.Length() == 1) {
WriteCommon(aText[0], aNewlineTerminate, rv);
} else {
// XXXbz it would be nice if we could pass all the strings to the parser
// without having to do all this copying and then ask it to start
// parsing....
nsString text;
for (uint32_t i = 0; i < aText.Length(); ++i) {
text.Append(aText[i]);
}
WriteCommon(text, aNewlineTerminate, rv);
}
}
void nsHTMLDocument::WriteCommon(const nsAString& aText, bool aNewlineTerminate,
ErrorResult& aRv) {
mTooDeepWriteRecursion =
(mWriteLevel > NS_MAX_DOCUMENT_WRITE_DEPTH || mTooDeepWriteRecursion);
if (NS_WARN_IF(mTooDeepWriteRecursion)) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return;
}
if (!IsHTMLDocument() || mDisableDocWrite) {
// No calling document.write*() on XHTML!
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
if (ShouldThrowOnDynamicMarkupInsertion()) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
if (mParserAborted) {
// Hixie says aborting the parser doesn't undefine the insertion point.
// However, since we null out mParser in that case, we track the
// theoretically defined insertion point using mParserAborted.
return;
}
// Implement Step 4.1 of:
// https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#document-write-steps
if (ShouldIgnoreOpens()) {
return;
}
void* key = GenerateParserKey();
if (mParser && !mParser->IsInsertionPointDefined()) {
if (mIgnoreDestructiveWritesCounter) {
// Instead of implying a call to document.open(), ignore the call.
nsContentUtils::ReportToConsole(
nsIScriptError::warningFlag, NS_LITERAL_CSTRING("DOM Events"), this,
nsContentUtils::eDOM_PROPERTIES, "DocumentWriteIgnored", nullptr, 0,
mDocumentURI);
return;
}
// The spec doesn't tell us to ignore opens from here, but we need to
// ensure opens are ignored here.
IgnoreOpensDuringUnload ignoreOpenGuard(this);
mParser->Terminate();
MOZ_RELEASE_ASSERT(!mParser, "mParser should have been null'd out");
}
if (!mParser) {
if (mIgnoreDestructiveWritesCounter) {
// Instead of implying a call to document.open(), ignore the call.
nsContentUtils::ReportToConsole(
nsIScriptError::warningFlag, NS_LITERAL_CSTRING("DOM Events"), this,
nsContentUtils::eDOM_PROPERTIES, "DocumentWriteIgnored", nullptr, 0,
mDocumentURI);
return;
}
Open(Optional<nsAString>(), EmptyString(), aRv);
// If Open() fails, or if it didn't create a parser (as it won't
// if the user chose to not discard the current document through
// onbeforeunload), don't write anything.
if (aRv.Failed() || !mParser) {
return;
}
}
static NS_NAMED_LITERAL_STRING(new_line, "\n");
++mWriteLevel;
// This could be done with less code, but for performance reasons it
// makes sense to have the code for two separate Parse() calls here
// since the concatenation of strings costs more than we like. And
// why pay that price when we don't need to?
if (aNewlineTerminate) {
aRv = (static_cast<nsHtml5Parser*>(mParser.get()))
->Parse(aText + new_line, key, mContentTypeForWriteCalls, false);
} else {
aRv = (static_cast<nsHtml5Parser*>(mParser.get()))
->Parse(aText, key, mContentTypeForWriteCalls, false);
}
--mWriteLevel;
mTooDeepWriteRecursion = (mWriteLevel != 0 && mTooDeepWriteRecursion);
}
void nsHTMLDocument::Write(const Sequence<nsString>& aText, ErrorResult& rv) {
WriteCommon(aText, false, rv);
}
void nsHTMLDocument::Writeln(const Sequence<nsString>& aText, ErrorResult& rv) {
WriteCommon(aText, true, rv);
}
void nsHTMLDocument::AddedForm() { ++mNumForms; }
void nsHTMLDocument::RemovedForm() { --mNumForms; }
int32_t nsHTMLDocument::GetNumFormsSynchronous() { return mNumForms; }
void nsHTMLDocument::GetAlinkColor(nsAString& aAlinkColor) {
aAlinkColor.Truncate();
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->GetALink(aAlinkColor);
}
}
void nsHTMLDocument::SetAlinkColor(const nsAString& aAlinkColor) {
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->SetALink(aAlinkColor);
}
}
void nsHTMLDocument::GetLinkColor(nsAString& aLinkColor) {
aLinkColor.Truncate();
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->GetLink(aLinkColor);
}
}
void nsHTMLDocument::SetLinkColor(const nsAString& aLinkColor) {
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->SetLink(aLinkColor);
}
}
void nsHTMLDocument::GetVlinkColor(nsAString& aVlinkColor) {
aVlinkColor.Truncate();
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->GetVLink(aVlinkColor);
}
}
void nsHTMLDocument::SetVlinkColor(const nsAString& aVlinkColor) {
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->SetVLink(aVlinkColor);
}
}
void nsHTMLDocument::GetBgColor(nsAString& aBgColor) {
aBgColor.Truncate();
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->GetBgColor(aBgColor);
}
}
void nsHTMLDocument::SetBgColor(const nsAString& aBgColor) {
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->SetBgColor(aBgColor);
}
}
void nsHTMLDocument::GetFgColor(nsAString& aFgColor) {
aFgColor.Truncate();
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->GetText(aFgColor);
}
}
void nsHTMLDocument::SetFgColor(const nsAString& aFgColor) {
HTMLBodyElement* body = GetBodyElement();
if (body) {
body->SetText(aFgColor);
}
}
void nsHTMLDocument::CaptureEvents() {
WarnOnceAbout(Document::eUseOfCaptureEvents);
}
void nsHTMLDocument::ReleaseEvents() {
WarnOnceAbout(Document::eUseOfReleaseEvents);
}
bool nsHTMLDocument::ResolveName(JSContext* aCx, const nsAString& aName,
JS::MutableHandle<JS::Value> aRetval,
ErrorResult& aError) {
IdentifierMapEntry* entry = mIdentifierMap.GetEntry(aName);
if (!entry) {
return false;
}
nsBaseContentList* list = entry->GetNameContentList();
uint32_t length = list ? list->Length() : 0;
nsIContent* node;
if (length > 0) {
if (length > 1) {
// The list contains more than one element, return the whole list.
if (!ToJSValue(aCx, list, aRetval)) {
aError.NoteJSContextException(aCx);
return false;
}
return true;
}
// Only one element in the list, return the element instead of returning
// the list.
node = list->Item(0);
} else {
// No named items were found, see if there's one registerd by id for aName.
Element* e = entry->GetIdElement();
if (!e || !nsGenericHTMLElement::ShouldExposeIdAsHTMLDocumentProperty(e)) {
return false;
}
node = e;
}
if (!ToJSValue(aCx, node, aRetval)) {
aError.NoteJSContextException(aCx);
return false;
}
return true;
}
void nsHTMLDocument::GetSupportedNames(nsTArray<nsString>& aNames) {
for (auto iter = mIdentifierMap.Iter(); !iter.Done(); iter.Next()) {
IdentifierMapEntry* entry = iter.Get();
if (entry->HasNameElement() ||
entry->HasIdElementExposedAsHTMLDocumentProperty()) {
aNames.AppendElement(entry->GetKeyAsString());
}
}
}
//----------------------------
// forms related stuff
bool nsHTMLDocument::MatchFormControls(Element* aElement, int32_t aNamespaceID,
nsAtom* aAtom, void* aData) {
return aElement->IsNodeOfType(nsIContent::eHTML_FORM_CONTROL);
}
void* nsHTMLDocument::GenerateParserKey(void) {
if (!mScriptLoader) {
// If we don't have a script loader, then the parser probably isn't parsing
// anything anyway, so just return null.
return nullptr;
}
// The script loader provides us with the currently executing script element,
// which is guaranteed to be unique per script.
nsIScriptElement* script = mScriptLoader->GetCurrentParserInsertedScript();
if (script && mParser && mParser->IsScriptCreated()) {
nsCOMPtr<nsIParser> creatorParser = script->GetCreatorParser();
if (creatorParser != mParser) {
// Make scripts that aren't inserted by the active parser of this document
// participate in the context of the script that document.open()ed
// this document.
return nullptr;
}
}
return script;
}
void nsHTMLDocument::GetDesignMode(nsAString& aDesignMode) {
if (HasFlag(NODE_IS_EDITABLE)) {
aDesignMode.AssignLiteral("on");
} else {
aDesignMode.AssignLiteral("off");
}
}
void nsHTMLDocument::MaybeEditingStateChanged() {
if (!mPendingMaybeEditingStateChanged && mMayStartLayout &&
mUpdateNestLevel == 0 && (mContentEditableCount > 0) != IsEditingOn()) {
if (nsContentUtils::IsSafeToRunScript()) {
EditingStateChanged();
} else if (!mInDestructor) {
nsContentUtils::AddScriptRunner(
NewRunnableMethod("nsHTMLDocument::MaybeEditingStateChanged", this,
&nsHTMLDocument::MaybeEditingStateChanged));
}
}
}
void nsHTMLDocument::EndUpdate() {
const bool reset = !mPendingMaybeEditingStateChanged;
mPendingMaybeEditingStateChanged = true;
Document::EndUpdate();
if (reset) {
mPendingMaybeEditingStateChanged = false;
}
MaybeEditingStateChanged();
}
void nsHTMLDocument::SetMayStartLayout(bool aMayStartLayout) {
Document::SetMayStartLayout(aMayStartLayout);
MaybeEditingStateChanged();
}
// Helper class, used below in ChangeContentEditableCount().
class DeferredContentEditableCountChangeEvent : public Runnable {
public:
DeferredContentEditableCountChangeEvent(nsHTMLDocument* aDoc,
nsIContent* aElement)
: mozilla::Runnable("DeferredContentEditableCountChangeEvent"),
mDoc(aDoc),
mElement(aElement) {}
NS_IMETHOD Run() override {
if (mElement && mElement->OwnerDoc() == mDoc) {
mDoc->DeferredContentEditableCountChange(mElement);
}
return NS_OK;
}
private:
RefPtr<nsHTMLDocument> mDoc;
nsCOMPtr<nsIContent> mElement;
};
nsresult nsHTMLDocument::ChangeContentEditableCount(nsIContent* aElement,
int32_t aChange) {
NS_ASSERTION(int32_t(mContentEditableCount) + aChange >= 0,
"Trying to decrement too much.");
mContentEditableCount += aChange;
nsContentUtils::AddScriptRunner(
new DeferredContentEditableCountChangeEvent(this, aElement));
return NS_OK;
}
void nsHTMLDocument::DeferredContentEditableCountChange(nsIContent* aElement) {
if (mParser ||
(mUpdateNestLevel > 0 && (mContentEditableCount > 0) != IsEditingOn())) {
return;
}
EditingState oldState = mEditingState;
nsresult rv = EditingStateChanged();
NS_ENSURE_SUCCESS_VOID(rv);
if (oldState == mEditingState && mEditingState == eContentEditable) {
// We just changed the contentEditable state of a node, we need to reset
// the spellchecking state of that node.
if (aElement) {
nsPIDOMWindowOuter* window = GetWindow();
if (!window) return;
nsIDocShell* docshell = window->GetDocShell();
if (!docshell) return;
RefPtr<HTMLEditor> htmlEditor = docshell->GetHTMLEditor();
if (htmlEditor) {
RefPtr<nsRange> range = new nsRange(aElement);
IgnoredErrorResult res;
range->SelectNode(*aElement, res);
if (res.Failed()) {
// The node might be detached from the document at this point,
// which would cause this call to fail. In this case, we can
// safely ignore the contenteditable count change.
return;
}
nsCOMPtr<nsIInlineSpellChecker> spellChecker;
rv = htmlEditor->GetInlineSpellChecker(false,
getter_AddRefs(spellChecker));
NS_ENSURE_SUCCESS_VOID(rv);
if (spellChecker) {
rv = spellChecker->SpellCheckRange(range);
}
}
}
}
}
HTMLAllCollection* nsHTMLDocument::All() {
if (!mAll) {
mAll = new HTMLAllCollection(this);
}
return mAll;
}
static void NotifyEditableStateChange(nsINode* aNode, Document* aDocument) {
for (nsIContent* child = aNode->GetFirstChild(); child;
child = child->GetNextSibling()) {
if (child->IsElement()) {
child->AsElement()->UpdateState(true);
}
NotifyEditableStateChange(child, aDocument);
}
}
void nsHTMLDocument::TearingDownEditor() {
if (IsEditingOn()) {
EditingState oldState = mEditingState;
mEditingState = eTearingDown;
RefPtr<PresShell> presShell = GetPresShell();
if (!presShell) {
return;
}
nsTArray<RefPtr<StyleSheet>> agentSheets;
presShell->GetAgentStyleSheets(agentSheets);
auto cache = nsLayoutStylesheetCache::Singleton();
agentSheets.RemoveElement(cache->ContentEditableSheet());
if (oldState == eDesignMode)
agentSheets.RemoveElement(cache->DesignModeSheet());
presShell->SetAgentStyleSheets(agentSheets);
ApplicableStylesChanged();
}
}
nsresult nsHTMLDocument::TurnEditingOff() {
NS_ASSERTION(mEditingState != eOff, "Editing is already off.");
nsPIDOMWindowOuter* window = GetWindow();
if (!window) return NS_ERROR_FAILURE;
nsIDocShell* docshell = window->GetDocShell();
if (!docshell) return NS_ERROR_FAILURE;
nsCOMPtr<nsIEditingSession> editSession;
nsresult rv = docshell->GetEditingSession(getter_AddRefs(editSession));
NS_ENSURE_SUCCESS(rv, rv);
// turn editing off
rv = editSession->TearDownEditorOnWindow(window);
NS_ENSURE_SUCCESS(rv, rv);
mEditingState = eOff;
// Editor resets selection since it is being destroyed. But if focus is
// still into editable control, we have to initialize selection again.
nsFocusManager* fm = nsFocusManager::GetFocusManager();
if (fm) {
Element* element = fm->GetFocusedElement();
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(element);
if (txtCtrl) {
RefPtr<TextEditor> textEditor = txtCtrl->GetTextEditor();
if (textEditor) {
textEditor->ReinitializeSelection(*element);
}
}
}
return NS_OK;
}
static bool HasPresShell(nsPIDOMWindowOuter* aWindow) {
nsIDocShell* docShell = aWindow->GetDocShell();
if (!docShell) return false;
return docShell->GetPresShell() != nullptr;
}
nsresult nsHTMLDocument::SetEditingState(EditingState aState) {
mEditingState = aState;
return NS_OK;
}
nsresult nsHTMLDocument::EditingStateChanged() {
if (mRemovedFromDocShell) {
return NS_OK;
}
if (mEditingState == eSettingUp || mEditingState == eTearingDown) {
// XXX We shouldn't recurse
return NS_OK;
}
bool designMode = HasFlag(NODE_IS_EDITABLE);
EditingState newState =
designMode ? eDesignMode
: (mContentEditableCount > 0 ? eContentEditable : eOff);
if (mEditingState == newState) {
// No changes in editing mode.
return NS_OK;
}
if (newState == eOff) {
// Editing is being turned off.
nsAutoScriptBlocker scriptBlocker;
NotifyEditableStateChange(this, this);
return TurnEditingOff();
}
// Flush out style changes on our _parent_ document, if any, so that
// our check for a presshell won't get stale information.
if (mParentDocument) {
mParentDocument->FlushPendingNotifications(FlushType::Style);
}
// get editing session, make sure this is a strong reference so the
// window can't get deleted during the rest of this call.
nsCOMPtr<nsPIDOMWindowOuter> window = GetWindow();
if (!window) return NS_ERROR_FAILURE;
nsIDocShell* docshell = window->GetDocShell();
if (!docshell) return NS_ERROR_FAILURE;
// FlushPendingNotifications might destroy our docshell.
bool isBeingDestroyed = false;
docshell->IsBeingDestroyed(&isBeingDestroyed);
if (isBeingDestroyed) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIEditingSession> editSession;
nsresult rv = docshell->GetEditingSession(getter_AddRefs(editSession));
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<HTMLEditor> htmlEditor = editSession->GetHTMLEditorForWindow(window);
if (htmlEditor) {
// We might already have an editor if it was set up for mail, let's see
// if this is actually the case.
uint32_t flags = 0;
htmlEditor->GetFlags(&flags);
if (flags & nsIPlaintextEditor::eEditorMailMask) {
// We already have a mail editor, then we should not attempt to create
// another one.
return NS_OK;
}
}
if (!HasPresShell(window)) {
// We should not make the window editable or setup its editor.
// It's probably style=display:none.
return NS_OK;
}
bool makeWindowEditable = mEditingState == eOff;
bool updateState = false;
bool spellRecheckAll = false;
bool putOffToRemoveScriptBlockerUntilModifyingEditingState = false;
htmlEditor = nullptr;
{
EditingState oldState = mEditingState;
nsAutoEditingState push(this, eSettingUp);
RefPtr<PresShell> presShell = GetPresShell();
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
// Before making this window editable, we need to modify UA style sheet
// because new style may change whether focused element will be focusable
// or not.
nsTArray<RefPtr<StyleSheet>> agentSheets;
rv = presShell->GetAgentStyleSheets(agentSheets);
NS_ENSURE_SUCCESS(rv, rv);
auto cache = nsLayoutStylesheetCache::Singleton();
StyleSheet* contentEditableSheet = cache->ContentEditableSheet();
if (!agentSheets.Contains(contentEditableSheet)) {
agentSheets.AppendElement(contentEditableSheet);
}
// Should we update the editable state of all the nodes in the document? We
// need to do this when the designMode value changes, as that overrides
// specific states on the elements.
if (designMode) {
// designMode is being turned on (overrides contentEditable).
StyleSheet* designModeSheet = cache->DesignModeSheet();
if (!agentSheets.Contains(designModeSheet)) {
agentSheets.AppendElement(designModeSheet);
}
updateState = true;
spellRecheckAll = oldState == eContentEditable;
} else if (oldState == eDesignMode) {
// designMode is being turned off (contentEditable is still on).
agentSheets.RemoveElement(cache->DesignModeSheet());
updateState = true;
}
rv = presShell->SetAgentStyleSheets(agentSheets);
NS_ENSURE_SUCCESS(rv, rv);
ApplicableStylesChanged();
// Adjust focused element with new style but blur event shouldn't be fired
// until mEditingState is modified with newState.
nsAutoScriptBlocker scriptBlocker;
if (designMode) {
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
nsIContent* focusedContent = nsFocusManager::GetFocusedDescendant(
window, nsFocusManager::eOnlyCurrentWindow,
getter_AddRefs(focusedWindow));
if (focusedContent) {
nsIFrame* focusedFrame = focusedContent->GetPrimaryFrame();
bool clearFocus = focusedFrame ? !focusedFrame->IsFocusable()
: !focusedContent->IsFocusable();
if (clearFocus) {
nsFocusManager* fm = nsFocusManager::GetFocusManager();
if (fm) {
fm->ClearFocus(window);
// If we need to dispatch blur event, we should put off after
// modifying mEditingState since blur event handler may change
// designMode state again.
putOffToRemoveScriptBlockerUntilModifyingEditingState = true;
}
}
}
}
if (makeWindowEditable) {
// Editing is being turned on (through designMode or contentEditable)
// Turn on editor.
// XXX This can cause flushing which can change the editing state, so make
// sure to avoid recursing.
rv = editSession->MakeWindowEditable(window, "html", false, false, true);
NS_ENSURE_SUCCESS(rv, rv);
}
// XXX Need to call TearDownEditorOnWindow for all failures.
htmlEditor = docshell->GetHTMLEditor();
if (!htmlEditor) {
return NS_ERROR_FAILURE;
}
// If we're entering the design mode, put the selection at the beginning of
// the document for compatibility reasons.
if (designMode && oldState == eOff) {
htmlEditor->BeginningOfDocument();
}
if (putOffToRemoveScriptBlockerUntilModifyingEditingState) {
nsContentUtils::AddScriptBlocker();
}
}
mEditingState = newState;
if (putOffToRemoveScriptBlockerUntilModifyingEditingState) {
nsContentUtils::RemoveScriptBlocker();
// If mEditingState is overwritten by another call and already disabled
// the editing, we shouldn't keep making window editable.
if (mEditingState == eOff) {
return NS_OK;
}
}
if (makeWindowEditable) {
// Set the editor to not insert br's on return when in p
// elements by default.
// XXX Do we only want to do this for designMode?
// Note that it doesn't matter what CallerType we pass, because the callee
// doesn't use it for this command. Play it safe and pass the more
// restricted one.
ErrorResult errorResult;
nsCOMPtr<nsIPrincipal> principal = NodePrincipal();
Unused << ExecCommand(NS_LITERAL_STRING("insertBrOnReturn"), false,
NS_LITERAL_STRING("false"),
// Principal doesn't matter here, because the
// insertBrOnReturn command doesn't use it. Still
// it's too bad we can't easily grab a nullprincipal
// from somewhere without allocating one..
*principal, errorResult);
if (errorResult.Failed()) {
// Editor setup failed. Editing is not on after all.
// XXX Should we reset the editable flag on nodes?
editSession->TearDownEditorOnWindow(window);
mEditingState = eOff;
return errorResult.StealNSResult();
}
}
if (updateState) {
nsAutoScriptBlocker scriptBlocker;
NotifyEditableStateChange(this, this);
}
// Resync the editor's spellcheck state.
if (spellRecheckAll) {
nsCOMPtr<nsISelectionController> selectionController =
htmlEditor->GetSelectionController();
if (NS_WARN_IF(!selectionController)) {
return NS_ERROR_FAILURE;
}
RefPtr<Selection> spellCheckSelection = selectionController->GetSelection(
nsISelectionController::SELECTION_SPELLCHECK);
if (spellCheckSelection) {
spellCheckSelection->RemoveAllRanges(IgnoreErrors());
}
}
htmlEditor->SyncRealTimeSpell();
MaybeDispatchCheckKeyPressEventModelEvent();
return NS_OK;
}
void nsHTMLDocument::MaybeDispatchCheckKeyPressEventModelEvent() {
// Currently, we need to check only when we're becoming editable for
// contenteditable.
if (mEditingState != eContentEditable) {
return;
}
if (mHasBeenEditable) {
return;
}
mHasBeenEditable = true;
// Dispatch "CheckKeyPressEventModel" event. That is handled only by
// KeyPressEventModelCheckerChild. Then, it calls SetKeyPressEventModel()
// with proper keypress event for the active web app.
WidgetEvent checkEvent(true, eUnidentifiedEvent);
checkEvent.mSpecifiedEventType = nsGkAtoms::onCheckKeyPressEventModel;
checkEvent.mFlags.mCancelable = false;
checkEvent.mFlags.mBubbles = false;
checkEvent.mFlags.mOnlySystemGroupDispatch = true;
// Post the event rather than dispatching it synchronously because we need
// a call of SetKeyPressEventModel() before first key input. Therefore, we
// can avoid paying unnecessary runtime cost for most web apps.
(new AsyncEventDispatcher(this, checkEvent))->PostDOMEvent();
}
void nsHTMLDocument::SetKeyPressEventModel(uint16_t aKeyPressEventModel) {
PresShell* presShell = GetPresShell();
if (!presShell) {
return;
}
presShell->SetKeyPressEventModel(aKeyPressEventModel);
}
void nsHTMLDocument::SetDesignMode(const nsAString& aDesignMode,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& rv) {
SetDesignMode(aDesignMode, Some(&aSubjectPrincipal), rv);
}
void nsHTMLDocument::SetDesignMode(
const nsAString& aDesignMode, const Maybe<nsIPrincipal*>& aSubjectPrincipal,
ErrorResult& rv) {
if (aSubjectPrincipal.isSome() &&
!aSubjectPrincipal.value()->Subsumes(NodePrincipal())) {
rv.Throw(NS_ERROR_DOM_PROP_ACCESS_DENIED);
return;
}
bool editableMode = HasFlag(NODE_IS_EDITABLE);
if (aDesignMode.LowerCaseEqualsASCII(editableMode ? "off" : "on")) {
SetEditableFlag(!editableMode);
rv = EditingStateChanged();
}
}
nsCommandManager* nsHTMLDocument::GetMidasCommandManager() {
// check if we have it cached
if (mMidasCommandManager) {
return mMidasCommandManager;
}
nsPIDOMWindowOuter* window = GetWindow();
if (!window) {
return nullptr;
}
nsIDocShell* docshell = window->GetDocShell();
if (!docshell) {
return nullptr;
}
mMidasCommandManager = docshell->GetCommandManager();
return mMidasCommandManager;
}
struct MidasCommand {
const char* incomingCommandString;
const char* internalCommandString;
const char* internalParamString;
bool useNewParam;
bool convertToBoolean;
};
static const struct MidasCommand gMidasCommandTable[] = {
// clang-format off
{ "bold", "cmd_bold", "", true, false },
{ "italic", "cmd_italic", "", true, false },
{ "underline", "cmd_underline", "", true, false },
{ "strikethrough", "cmd_strikethrough", "", true, false },
{ "subscript", "cmd_subscript", "", true, false },
{ "superscript", "cmd_superscript", "", true, false },
{ "cut", "cmd_cut", "", true, false },
{ "copy", "cmd_copy", "", true, false },
{ "paste", "cmd_paste", "", true, false },
{ "delete", "cmd_deleteCharBackward", "", true, false },
{ "forwarddelete", "cmd_deleteCharForward", "", true, false },
{ "selectall", "cmd_selectAll", "", true, false },
{ "undo", "cmd_undo", "", true, false },
{ "redo", "cmd_redo", "", true, false },
{ "indent", "cmd_indent", "", true, false },
{ "outdent", "cmd_outdent", "", true, false },
{ "backcolor", "cmd_highlight", "", false, false },
{ "forecolor", "cmd_fontColor", "", false, false },
{ "hilitecolor", "cmd_highlight", "", false, false },
{ "fontname", "cmd_fontFace", "", false, false },
{ "fontsize", "cmd_fontSize", "", false, false },
{ "increasefontsize", "cmd_increaseFont", "", false, false },
{ "decreasefontsize", "cmd_decreaseFont", "", false, false },
{ "inserthorizontalrule", "cmd_insertHR", "", true, false },
{ "createlink", "cmd_insertLinkNoUI", "", false, false },
{ "insertimage", "cmd_insertImageNoUI", "", false, false },
{ "inserthtml", "cmd_insertHTML", "", false, false },
{ "inserttext", "cmd_insertText", "", false, false },
{ "gethtml", "cmd_getContents", "", false, false },
{ "justifyleft", "cmd_align", "left", true, false },
{ "justifyright", "cmd_align", "right", true, false },
{ "justifycenter", "cmd_align", "center", true, false },
{ "justifyfull", "cmd_align", "justify", true, false },
{ "removeformat", "cmd_removeStyles", "", true, false },
{ "unlink", "cmd_removeLinks", "", true, false },
{ "insertorderedlist", "cmd_ol", "", true, false },
{ "insertunorderedlist", "cmd_ul", "", true, false },
{ "insertparagraph", "cmd_insertParagraph", "", true, false },
{ "insertlinebreak", "cmd_insertLineBreak", "", true, false },
{ "formatblock", "cmd_paragraphState", "", false, false },
{ "heading", "cmd_paragraphState", "", false, false },
{ "styleWithCSS", "cmd_setDocumentUseCSS", "", false, true },
{ "contentReadOnly", "cmd_setDocumentReadOnly", "", false, true },
{ "insertBrOnReturn", "cmd_insertBrOnReturn", "", false, true },
{ "defaultParagraphSeparator", "cmd_defaultParagraphSeparator", "", false, false },
{ "enableObjectResizing", "cmd_enableObjectResizing", "", false, true },
{ "enableInlineTableEditing", "cmd_enableInlineTableEditing", "", false, true },
{ "enableAbsolutePositionEditing", "cmd_enableAbsolutePositionEditing", "", false, true },
#if 0
// no editor support to remove alignments right now
{ "justifynone", "cmd_align", "", true, false },
// the following will need special review before being turned on
{ "saveas", "cmd_saveAs", "", true, false },
{ "print", "cmd_print", "", true, false },
#endif
{ nullptr, nullptr, nullptr, false, false }
// clang-format on
};
#define MidasCommandCount \
((sizeof(gMidasCommandTable) / sizeof(struct MidasCommand)) - 1)
static const char* const gBlocks[] = {
// clang-format off
"ADDRESS",
"BLOCKQUOTE",
"DD",
"DIV",
"DL",
"DT",
"H1",
"H2",
"H3",
"H4",
"H5",
"H6",
"P",
"PRE"
// clang-format on
};
static bool ConvertToMidasInternalCommandInner(
const nsAString& inCommandID, const nsAString& inParam,
nsACString& outCommandID, nsACString& outParam, bool& outIsBoolean,
bool& outBooleanValue, bool aIgnoreParams) {
NS_ConvertUTF16toUTF8 convertedCommandID(inCommandID);
// Hack to support old boolean commands that were backwards (see bug 301490).
bool invertBool = false;
if (convertedCommandID.LowerCaseEqualsLiteral("usecss")) {
convertedCommandID.AssignLiteral("styleWithCSS");
invertBool = true;
} else if (convertedCommandID.LowerCaseEqualsLiteral("readonly")) {
convertedCommandID.AssignLiteral("contentReadOnly");
invertBool = true;
}
uint32_t i;
bool found = false;
for (i = 0; i < MidasCommandCount; ++i) {
if (convertedCommandID.Equals(gMidasCommandTable[i].incomingCommandString,
nsCaseInsensitiveCStringComparator())) {
found = true;
break;
}
}
if (!found) {
// reset results if the command is not found in our table
outCommandID.SetLength(0);
outParam.SetLength(0);
outIsBoolean = false;
return false;
}
// set outCommandID (what we use internally)
outCommandID.Assign(gMidasCommandTable[i].internalCommandString);
// set outParam & outIsBoolean based on flags from the table
outIsBoolean = gMidasCommandTable[i].convertToBoolean;
if (aIgnoreParams) {
// No further work to do
return true;
}
if (gMidasCommandTable[i].useNewParam) {
// Just have to copy it, no checking
outParam.Assign(gMidasCommandTable[i].internalParamString);
return true;
}
// handle checking of param passed in
if (outIsBoolean) {
// If this is a boolean value and it's not explicitly false (e.g. no value)
// we default to "true". For old backwards commands we invert the check (see
// bug 301490).
if (invertBool) {
outBooleanValue = inParam.LowerCaseEqualsLiteral("false");
} else {
outBooleanValue = !inParam.LowerCaseEqualsLiteral("false");
}
outParam.Truncate();
return true;
}
// String parameter -- see if we need to convert it (necessary for
// cmd_paragraphState and cmd_fontSize)
if (outCommandID.EqualsLiteral("cmd_paragraphState")) {
const char16_t* start = inParam.BeginReading();
const char16_t* end = inParam.EndReading();
if (start != end && *start == '<' && *(end - 1) == '>') {
++start;
--end;
}
NS_ConvertUTF16toUTF8 convertedParam(Substring(start, end));
uint32_t j;
for (j = 0; j < ArrayLength(gBlocks); ++j) {
if (convertedParam.Equals(gBlocks[j],
nsCaseInsensitiveCStringComparator())) {
outParam.Assign(gBlocks[j]);
break;
}
}
if (j == ArrayLength(gBlocks)) {
outParam.Truncate();
}
} else if (outCommandID.EqualsLiteral("cmd_fontSize")) {
// Per editing spec as of April 23, 2012, we need to reject the value if
// it's not a valid floating-point number surrounded by optional whitespace.
// Otherwise, we parse it as a legacy font size. For now, we just parse as
// a legacy font size regardless (matching WebKit) -- bug 747879.
outParam.Truncate();
int32_t size = nsContentUtils::ParseLegacyFontSize(inParam);
if (size) {
outParam.AppendInt(size);
}
} else {
CopyUTF16toUTF8(inParam, outParam);
}
return true;
}
static bool ConvertToMidasInternalCommand(const nsAString& inCommandID,
const nsAString& inParam,
nsACString& outCommandID,
nsACString& outParam,
bool& outIsBoolean,
bool& outBooleanValue) {
return ConvertToMidasInternalCommandInner(inCommandID, inParam, outCommandID,
outParam, outIsBoolean,
outBooleanValue, false);
}
static bool ConvertToMidasInternalCommand(const nsAString& inCommandID,
nsACString& outCommandID) {
nsAutoCString dummyCString;
nsAutoString dummyString;
bool dummyBool;
return ConvertToMidasInternalCommandInner(inCommandID, dummyString,
outCommandID, dummyCString,
dummyBool, dummyBool, true);
}
bool nsHTMLDocument::ExecCommand(const nsAString& commandID, bool doShowUI,
const nsAString& value,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& rv) {
// for optional parameters see dom/src/base/nsHistory.cpp: HistoryImpl::Go()
// this might add some ugly JS dependencies?
nsAutoCString cmdToDispatch, paramStr;
bool isBool, boolVal;
if (!ConvertToMidasInternalCommand(commandID, value, cmdToDispatch, paramStr,
isBool, boolVal)) {
return false;
}
bool isCutCopy = (commandID.LowerCaseEqualsLiteral("cut") ||
commandID.LowerCaseEqualsLiteral("copy"));
bool isPaste = commandID.LowerCaseEqualsLiteral("paste");
// if editing is not on, bail
if (!isCutCopy && !isPaste && !IsEditingOnAfterFlush()) {
return false;
}
// if they are requesting UI from us, let's fail since we have no UI
if (doShowUI) {
return false;
}
// special case for cut & copy
// cut & copy are allowed in non editable documents
if (isCutCopy) {
if (!nsContentUtils::IsCutCopyAllowed(&aSubjectPrincipal)) {
// We have rejected the event due to it not being performed in an
// input-driven context therefore, we report the error to the console.
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("DOM"), this,
nsContentUtils::eDOM_PROPERTIES,
"ExecCommandCutCopyDeniedNotInputDriven");
return false;
}
// For cut & copy commands, we need the behaviour from
// nsWindowRoot::GetControllers which is to look at the focused element, and
// defer to a focused textbox's controller The code past taken by other
// commands in ExecCommand always uses the window directly, rather than
// deferring to the textbox, which is desireable for most editor commands,
// but not 'cut' and 'copy' (as those should allow copying out of embedded
// editors). This behaviour is invoked if we call DoCommand directly on the
// docShell.
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
if (docShell) {
nsresult res = docShell->DoCommand(cmdToDispatch.get());
if (res == NS_SUCCESS_DOM_NO_OPERATION) {
return false;
}
return NS_SUCCEEDED(res);
}
return false;
}
if (commandID.LowerCaseEqualsLiteral("gethtml")) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
if (isPaste && !nsContentUtils::PrincipalHasPermission(
&aSubjectPrincipal, nsGkAtoms::clipboardRead)) {
return false;
}
// get command manager and dispatch command to our window if it's acceptable
RefPtr<nsCommandManager> commandManager = GetMidasCommandManager();
if (!commandManager) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
nsCOMPtr<nsPIDOMWindowOuter> window = GetWindow();
if (!window) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
if ((cmdToDispatch.EqualsLiteral("cmd_fontSize") ||
cmdToDispatch.EqualsLiteral("cmd_insertImageNoUI") ||
cmdToDispatch.EqualsLiteral("cmd_insertLinkNoUI") ||
cmdToDispatch.EqualsLiteral("cmd_paragraphState")) &&
paramStr.IsEmpty()) {
// Invalid value, return false
return false;
}
if (cmdToDispatch.EqualsLiteral("cmd_defaultParagraphSeparator") &&
!paramStr.LowerCaseEqualsLiteral("div") &&
!paramStr.LowerCaseEqualsLiteral("p") &&
!paramStr.LowerCaseEqualsLiteral("br")) {
// Invalid value
return false;
}
// Return false for disabled commands (bug 760052)
if (!commandManager->IsCommandEnabled(cmdToDispatch, window)) {
return false;
}
if (!isBool && paramStr.IsEmpty()) {
rv = commandManager->DoCommand(cmdToDispatch.get(), nullptr, window);
} else {
// we have a command that requires a parameter, create params
RefPtr<nsCommandParams> params = new nsCommandParams();
if (isBool) {
rv = params->SetBool("state_attribute", boolVal);
} else if (cmdToDispatch.EqualsLiteral("cmd_fontFace") ||
cmdToDispatch.EqualsLiteral("cmd_insertImageNoUI") ||
cmdToDispatch.EqualsLiteral("cmd_insertLinkNoUI")) {
rv = params->SetString("state_attribute", value);
} else if (cmdToDispatch.EqualsLiteral("cmd_insertHTML") ||
cmdToDispatch.EqualsLiteral("cmd_insertText")) {
rv = params->SetString("state_data", value);
} else {
rv = params->SetCString("state_attribute", paramStr);
}
if (rv.Failed()) {
return false;
}
rv = commandManager->DoCommand(cmdToDispatch.get(), params, window);
}
return !rv.Failed();
}
bool nsHTMLDocument::QueryCommandEnabled(const nsAString& commandID,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& rv) {
nsAutoCString cmdToDispatch;
if (!ConvertToMidasInternalCommand(commandID, cmdToDispatch)) {
return false;
}
// cut & copy are always allowed
bool isCutCopy = commandID.LowerCaseEqualsLiteral("cut") ||
commandID.LowerCaseEqualsLiteral("copy");
if (isCutCopy) {
return nsContentUtils::IsCutCopyAllowed(&aSubjectPrincipal);
}
// Report false for restricted commands
bool restricted = commandID.LowerCaseEqualsLiteral("paste");
if (restricted && !nsContentUtils::IsSystemPrincipal(&aSubjectPrincipal)) {
return false;
}
// if editing is not on, bail
if (!IsEditingOnAfterFlush()) {
return false;
}
// get command manager and dispatch command to our window if it's acceptable
RefPtr<nsCommandManager> commandManager = GetMidasCommandManager();
if (!commandManager) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
nsPIDOMWindowOuter* window = GetWindow();
if (!window) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
return commandManager->IsCommandEnabled(cmdToDispatch, window);
}
bool nsHTMLDocument::QueryCommandIndeterm(const nsAString& commandID,
ErrorResult& rv) {
nsAutoCString cmdToDispatch;
if (!ConvertToMidasInternalCommand(commandID, cmdToDispatch)) {
return false;
}
// if editing is not on, bail
if (!IsEditingOnAfterFlush()) {
return false;
}
// get command manager and dispatch command to our window if it's acceptable
RefPtr<nsCommandManager> commandManager = GetMidasCommandManager();
if (!commandManager) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
nsPIDOMWindowOuter* window = GetWindow();
if (!window) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
RefPtr<nsCommandParams> params = new nsCommandParams();
rv = commandManager->GetCommandState(cmdToDispatch.get(), window, params);
if (rv.Failed()) {
return false;
}
// If command does not have a state_mixed value, this call fails and sets
// retval to false. This is fine -- we want to return false in that case
// anyway (bug 738385), so we just don't throw regardless.
return params->GetBool("state_mixed");
}
bool nsHTMLDocument::QueryCommandState(const nsAString& commandID,
ErrorResult& rv) {
nsAutoCString cmdToDispatch, paramToCheck;
bool dummy, dummy2;
if (!ConvertToMidasInternalCommand(commandID, commandID, cmdToDispatch,
paramToCheck, dummy, dummy2)) {
return false;
}
// if editing is not on, bail
if (!IsEditingOnAfterFlush()) {
return false;
}
// get command manager and dispatch command to our window if it's acceptable
RefPtr<nsCommandManager> commandManager = GetMidasCommandManager();
if (!commandManager) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
nsPIDOMWindowOuter* window = GetWindow();
if (!window) {
rv.Throw(NS_ERROR_FAILURE);
return false;
}
if (commandID.LowerCaseEqualsLiteral("usecss")) {
// Per spec, state is supported for styleWithCSS but not useCSS, so we just
// return false always.
return false;
}
RefPtr<nsCommandParams> params = new nsCommandParams();
rv = commandManager->GetCommandState(cmdToDispatch.get(), window, params);
if (rv.Failed()) {
return false;
}
// handle alignment as a special case (possibly other commands too?)
// Alignment is special because the external api is individual
// commands but internally we use cmd_align with different
// parameters. When getting the state of this command, we need to
// return the boolean for this particular alignment rather than the
// string of 'which alignment is this?'
if (cmdToDispatch.EqualsLiteral("cmd_align")) {
nsAutoCString actualAlignmentType;
rv = params->GetCString("state_attribute", actualAlignmentType);
return !rv.Failed() && !actualAlignmentType.IsEmpty() &&
paramToCheck == actualAlignmentType;
}
// If command does not have a state_all value, this call fails and sets
// retval to false. This is fine -- we want to return false in that case
// anyway (bug 738385), so we just succeed and return false regardless.
return params->GetBool("state_all");
}
bool nsHTMLDocument::QueryCommandSupported(const nsAString& commandID,
CallerType aCallerType) {
// Gecko technically supports all the clipboard commands including
// cut/copy/paste, but non-privileged content will be unable to call
// paste, and depending on the pref "dom.allow_cut_copy", cut and copy
// may also be disallowed to be called from non-privileged content.
// For that reason, we report the support status of corresponding
// command accordingly.
if (aCallerType != CallerType::System) {
if (commandID.LowerCaseEqualsLiteral("paste")) {
return false;
}
if (nsContentUtils::IsCutCopyRestricted()) {
// XXXbz should we worry about correctly reporting "true" in the
// "restricted, but we're an addon with clipboardWrite permissions" case?
// See also nsContentUtils::IsCutCopyAllowed.
if (commandID.LowerCaseEqualsLiteral("cut") ||
commandID.LowerCaseEqualsLiteral("copy")) {
return false;
}
}
}
// commandID is supported if it can be converted to a Midas command
nsAutoCString cmdToDispatch;
return ConvertToMidasInternalCommand(commandID, cmdToDispatch);
}
void nsHTMLDocument::QueryCommandValue(const nsAString& commandID,
nsAString& aValue, ErrorResult& rv) {
aValue.Truncate();
nsAutoCString cmdToDispatch, paramStr;
if (!ConvertToMidasInternalCommand(commandID, cmdToDispatch)) {
// Return empty string
return;
}
// if editing is not on, bail
if (!IsEditingOnAfterFlush()) {
return;
}
// get command manager and dispatch command to our window if it's acceptable
RefPtr<nsCommandManager> commandManager = GetMidasCommandManager();
if (!commandManager) {
rv.Throw(NS_ERROR_FAILURE);
return;
}
nsCOMPtr<nsPIDOMWindowOuter> window = GetWindow();
if (!window) {
rv.Throw(NS_ERROR_FAILURE);
return;
}
// this is a special command since we are calling DoCommand rather than
// GetCommandState like the other commands
RefPtr<nsCommandParams> params = new nsCommandParams();
if (cmdToDispatch.EqualsLiteral("cmd_getContents")) {
rv = params->SetBool("selection_only", true);
if (rv.Failed()) {
return;
}
rv = params->SetCString("format", NS_LITERAL_CSTRING("text/html"));
if (rv.Failed()) {
return;
}
rv = commandManager->DoCommand(cmdToDispatch.get(), params, window);
if (rv.Failed()) {
return;
}
params->GetString("result", aValue);
return;
}
rv = params->SetCString("state_attribute", paramStr);
if (rv.Failed()) {
return;
}
rv = commandManager->GetCommandState(cmdToDispatch.get(), window, params);
if (rv.Failed()) {
return;
}
// If command does not have a state_attribute value, this call fails, and
// aValue will wind up being the empty string. This is fine -- we want to
// return "" in that case anyway (bug 738385), so we just return NS_OK
// regardless.
nsAutoCString result;
params->GetCString("state_attribute", result);
CopyUTF8toUTF16(result, aValue);
}
nsresult nsHTMLDocument::Clone(dom::NodeInfo* aNodeInfo,
nsINode** aResult) const {
NS_ASSERTION(aNodeInfo->NodeInfoManager() == mNodeInfoManager,
"Can't import this document into another document!");
RefPtr<nsHTMLDocument> clone = new nsHTMLDocument();
nsresult rv = CloneDocHelper(clone.get());
NS_ENSURE_SUCCESS(rv, rv);
// State from nsHTMLDocument
clone->mLoadFlags = mLoadFlags;
clone.forget(aResult);
return NS_OK;
}
bool nsHTMLDocument::IsEditingOnAfterFlush() {
Document* doc = GetParentDocument();
if (doc) {
// Make sure frames are up to date, since that can affect whether
// we're editable.
doc->FlushPendingNotifications(FlushType::Frames);
}
return IsEditingOn();
}
void nsHTMLDocument::RemovedFromDocShell() {
mEditingState = eOff;
Document::RemovedFromDocShell();
}
/* virtual */
void nsHTMLDocument::DocAddSizeOfExcludingThis(
nsWindowSizes& aWindowSizes) const {
Document::DocAddSizeOfExcludingThis(aWindowSizes);
// Measurement of the following members may be added later if DMD finds it is
// worthwhile:
// - mLinks
// - mAnchors
// - mMidasCommandManager
}
bool nsHTMLDocument::WillIgnoreCharsetOverride() {
if (mEncodingMenuDisabled) {
return true;
}
if (mType != eHTML) {
MOZ_ASSERT(mType == eXHTML);
return true;
}
if (mCharacterSetSource >= kCharsetFromByteOrderMark) {
return true;
}
if (!mCharacterSet->IsAsciiCompatible() &&
mCharacterSet != ISO_2022_JP_ENCODING) {
return true;
}
nsIURI* uri = GetOriginalURI();
if (uri) {
bool schemeIs = false;
uri->SchemeIs("about", &schemeIs);
if (schemeIs) {
return true;
}
bool isResource;
nsresult rv = NS_URIChainHasFlags(
uri, nsIProtocolHandler::URI_IS_UI_RESOURCE, &isResource);
if (NS_FAILED(rv) || isResource) {
return true;
}
}
return false;
}
void nsHTMLDocument::GetFormsAndFormControls(nsContentList** aFormList,
nsContentList** aFormControlList) {
RefPtr<ContentListHolder> holder = mContentListHolder;
if (!holder) {
// Flush our content model so it'll be up to date
// If this becomes unnecessary and the following line is removed,
// please also remove the corresponding flush operation from
// nsHtml5TreeBuilderCppSupplement.h. (Look for "See bug 497861." there.)
// XXXsmaug nsHtml5TreeBuilderCppSupplement doesn't seem to have such flush
// anymore.
FlushPendingNotifications(FlushType::Content);
RefPtr<nsContentList> htmlForms = GetExistingForms();
if (!htmlForms) {
// If the document doesn't have an existing forms content list, create a
// new one which will be released soon by ContentListHolder. The idea is
// that we don't have that list hanging around for a long time and slowing
// down future DOM mutations.
//
// Please keep this in sync with Document::Forms().
htmlForms = new nsContentList(this, kNameSpaceID_XHTML, nsGkAtoms::form,
nsGkAtoms::form,
/* aDeep = */ true,
/* aLiveList = */ true);
}
RefPtr<nsContentList> htmlFormControls = new nsContentList(
this, nsHTMLDocument::MatchFormControls, nullptr, nullptr,
/* aDeep = */ true,
/* aMatchAtom = */ nullptr,
/* aMatchNameSpaceId = */ kNameSpaceID_None,
/* aFuncMayDependOnAttr = */ true,
/* aLiveList = */ true);
holder = new ContentListHolder(this, htmlForms, htmlFormControls);
RefPtr<ContentListHolder> runnable = holder;
if (NS_SUCCEEDED(
Dispatch(TaskCategory::GarbageCollection, runnable.forget()))) {
mContentListHolder = holder;
}
}
NS_ADDREF(*aFormList = holder->mFormList);
NS_ADDREF(*aFormControlList = holder->mFormControlList);
}
void nsHTMLDocument::UserInteractionForTesting() { SetUserHasInteracted(); }
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