зеркало из https://github.com/mozilla/gecko-dev.git
267 строки
9.1 KiB
C++
267 строки
9.1 KiB
C++
/* -*- 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/. */
|
|
|
|
/*
|
|
* A class for managing namespace IDs and mapping back and forth
|
|
* between namespace IDs and namespace URIs.
|
|
*/
|
|
|
|
#include "nsNameSpaceManager.h"
|
|
|
|
#include "nscore.h"
|
|
#include "mozilla/dom/NodeInfo.h"
|
|
#include "nsAtom.h"
|
|
#include "nsCOMArray.h"
|
|
#include "nsContentCreatorFunctions.h"
|
|
#include "nsGkAtoms.h"
|
|
#include "mozilla/dom/Document.h"
|
|
#include "nsString.h"
|
|
#include "mozilla/dom/NodeInfo.h"
|
|
#include "mozilla/ClearOnShutdown.h"
|
|
#include "mozilla/dom/Element.h"
|
|
#include "mozilla/Preferences.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::dom;
|
|
|
|
static const char* kPrefSVGDisabled = "svg.disabled";
|
|
static const char* kPrefMathMLDisabled = "mathml.disabled";
|
|
static const char* kObservedNSPrefs[] = {kPrefMathMLDisabled, kPrefSVGDisabled,
|
|
nullptr};
|
|
StaticRefPtr<nsNameSpaceManager> nsNameSpaceManager::sInstance;
|
|
|
|
/* static */
|
|
nsNameSpaceManager* nsNameSpaceManager::GetInstance() {
|
|
if (!sInstance) {
|
|
sInstance = new nsNameSpaceManager();
|
|
if (sInstance->Init()) {
|
|
ClearOnShutdown(&sInstance);
|
|
} else {
|
|
delete sInstance;
|
|
sInstance = nullptr;
|
|
}
|
|
}
|
|
|
|
return sInstance;
|
|
}
|
|
|
|
bool nsNameSpaceManager::Init() {
|
|
nsresult rv;
|
|
#define REGISTER_NAMESPACE(uri, id) \
|
|
rv = AddNameSpace(dont_AddRef(uri), id); \
|
|
NS_ENSURE_SUCCESS(rv, false)
|
|
|
|
#define REGISTER_DISABLED_NAMESPACE(uri, id) \
|
|
rv = AddDisabledNameSpace(dont_AddRef(uri), id); \
|
|
NS_ENSURE_SUCCESS(rv, false)
|
|
|
|
mozilla::Preferences::RegisterCallbacks(nsNameSpaceManager::PrefChanged,
|
|
kObservedNSPrefs, this);
|
|
|
|
PrefChanged(nullptr);
|
|
|
|
// Need to be ordered according to ID.
|
|
MOZ_ASSERT(mURIArray.IsEmpty());
|
|
REGISTER_NAMESPACE(nsGkAtoms::_empty, kNameSpaceID_None);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_xmlns, kNameSpaceID_XMLNS);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_xml, kNameSpaceID_XML);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_xhtml, kNameSpaceID_XHTML);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_xlink, kNameSpaceID_XLink);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_xslt, kNameSpaceID_XSLT);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_mathml, kNameSpaceID_MathML);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_rdf, kNameSpaceID_RDF);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_xul, kNameSpaceID_XUL);
|
|
REGISTER_NAMESPACE(nsGkAtoms::nsuri_svg, kNameSpaceID_SVG);
|
|
REGISTER_DISABLED_NAMESPACE(nsGkAtoms::nsuri_mathml,
|
|
kNameSpaceID_disabled_MathML);
|
|
REGISTER_DISABLED_NAMESPACE(nsGkAtoms::nsuri_svg, kNameSpaceID_disabled_SVG);
|
|
|
|
#undef REGISTER_NAMESPACE
|
|
#undef REGISTER_DISABLED_NAMESPACE
|
|
|
|
return true;
|
|
}
|
|
|
|
nsresult nsNameSpaceManager::RegisterNameSpace(const nsAString& aURI,
|
|
int32_t& aNameSpaceID) {
|
|
RefPtr<nsAtom> atom = NS_Atomize(aURI);
|
|
return RegisterNameSpace(atom.forget(), aNameSpaceID);
|
|
}
|
|
|
|
nsresult nsNameSpaceManager::RegisterNameSpace(already_AddRefed<nsAtom> aURI,
|
|
int32_t& aNameSpaceID) {
|
|
RefPtr<nsAtom> atom = aURI;
|
|
nsresult rv = NS_OK;
|
|
if (atom == nsGkAtoms::_empty) {
|
|
aNameSpaceID = kNameSpaceID_None; // xmlns="", see bug 75700 for details
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mURIToIDTable.Get(atom, &aNameSpaceID)) {
|
|
aNameSpaceID = mURIArray.Length();
|
|
|
|
rv = AddNameSpace(atom.forget(), aNameSpaceID);
|
|
if (NS_FAILED(rv)) {
|
|
aNameSpaceID = kNameSpaceID_Unknown;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(aNameSpaceID >= -1, "Bogus namespace ID");
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult nsNameSpaceManager::GetNameSpaceURI(int32_t aNameSpaceID,
|
|
nsAString& aURI) {
|
|
MOZ_ASSERT(aNameSpaceID >= 0, "Bogus namespace ID");
|
|
|
|
// We have historically treated GetNameSpaceURI calls for kNameSpaceID_None
|
|
// as erroneous.
|
|
if (aNameSpaceID <= 0 || aNameSpaceID >= int32_t(mURIArray.Length())) {
|
|
aURI.Truncate();
|
|
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
mURIArray.ElementAt(aNameSpaceID)->ToString(aURI);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
int32_t nsNameSpaceManager::GetNameSpaceID(const nsAString& aURI,
|
|
bool aInChromeDoc) {
|
|
if (aURI.IsEmpty()) {
|
|
return kNameSpaceID_None; // xmlns="", see bug 75700 for details
|
|
}
|
|
|
|
RefPtr<nsAtom> atom = NS_Atomize(aURI);
|
|
return GetNameSpaceID(atom, aInChromeDoc);
|
|
}
|
|
|
|
int32_t nsNameSpaceManager::GetNameSpaceID(nsAtom* aURI, bool aInChromeDoc) {
|
|
if (aURI == nsGkAtoms::_empty) {
|
|
return kNameSpaceID_None; // xmlns="", see bug 75700 for details
|
|
}
|
|
|
|
int32_t nameSpaceID;
|
|
if (!aInChromeDoc && (mMathMLDisabled || mSVGDisabled) &&
|
|
mDisabledURIToIDTable.Get(aURI, &nameSpaceID) &&
|
|
((mMathMLDisabled && kNameSpaceID_disabled_MathML == nameSpaceID) ||
|
|
(mSVGDisabled && kNameSpaceID_disabled_SVG == nameSpaceID))) {
|
|
MOZ_ASSERT(nameSpaceID >= 0, "Bogus namespace ID");
|
|
return nameSpaceID;
|
|
}
|
|
if (mURIToIDTable.Get(aURI, &nameSpaceID)) {
|
|
MOZ_ASSERT(nameSpaceID >= 0, "Bogus namespace ID");
|
|
return nameSpaceID;
|
|
}
|
|
|
|
return kNameSpaceID_Unknown;
|
|
}
|
|
|
|
// static
|
|
const char* nsNameSpaceManager::GetNameSpaceDisplayName(uint32_t aNameSpaceID) {
|
|
static const char* kNSURIs[] = {"([none])", "(xmlns)", "(xml)", "(xhtml)",
|
|
"(XLink)", "(XSLT)", "(MathML)", "(RDF)",
|
|
"(XUL)", "(SVG)"};
|
|
if (aNameSpaceID < ArrayLength(kNSURIs)) {
|
|
return kNSURIs[aNameSpaceID];
|
|
}
|
|
return "";
|
|
}
|
|
|
|
nsresult NS_NewElement(Element** aResult,
|
|
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
|
|
FromParser aFromParser, const nsAString* aIs) {
|
|
RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
|
|
int32_t ns = ni->NamespaceID();
|
|
RefPtr<nsAtom> isAtom = aIs ? NS_AtomizeMainThread(*aIs) : nullptr;
|
|
if (ns == kNameSpaceID_XHTML) {
|
|
return NS_NewHTMLElement(aResult, ni.forget(), aFromParser, isAtom);
|
|
}
|
|
#ifdef MOZ_XUL
|
|
if (ns == kNameSpaceID_XUL) {
|
|
return NS_NewXULElement(aResult, ni.forget(), aFromParser, isAtom);
|
|
}
|
|
#endif
|
|
if (ns == kNameSpaceID_MathML) {
|
|
// If the mathml.disabled pref. is true, convert all MathML nodes into
|
|
// disabled MathML nodes by swapping the namespace.
|
|
if (ni->NodeInfoManager()->MathMLEnabled()) {
|
|
return NS_NewMathMLElement(aResult, ni.forget());
|
|
}
|
|
|
|
RefPtr<mozilla::dom::NodeInfo> genericXMLNI =
|
|
ni->NodeInfoManager()->GetNodeInfo(ni->NameAtom(), ni->GetPrefixAtom(),
|
|
kNameSpaceID_disabled_MathML,
|
|
ni->NodeType(), ni->GetExtraName());
|
|
return NS_NewXMLElement(aResult, genericXMLNI.forget());
|
|
}
|
|
if (ns == kNameSpaceID_SVG) {
|
|
// If the svg.disabled pref. is true, convert all SVG nodes into
|
|
// disabled SVG nodes by swapping the namespace.
|
|
if (ni->NodeInfoManager()->SVGEnabled()) {
|
|
return NS_NewSVGElement(aResult, ni.forget(), aFromParser);
|
|
}
|
|
RefPtr<mozilla::dom::NodeInfo> genericXMLNI =
|
|
ni->NodeInfoManager()->GetNodeInfo(ni->NameAtom(), ni->GetPrefixAtom(),
|
|
kNameSpaceID_disabled_SVG,
|
|
ni->NodeType(), ni->GetExtraName());
|
|
return NS_NewXMLElement(aResult, genericXMLNI.forget());
|
|
}
|
|
|
|
return NS_NewXMLElement(aResult, ni.forget());
|
|
}
|
|
|
|
bool nsNameSpaceManager::HasElementCreator(int32_t aNameSpaceID) {
|
|
return aNameSpaceID == kNameSpaceID_XHTML ||
|
|
#ifdef MOZ_XUL
|
|
aNameSpaceID == kNameSpaceID_XUL ||
|
|
#endif
|
|
aNameSpaceID == kNameSpaceID_MathML ||
|
|
aNameSpaceID == kNameSpaceID_SVG || false;
|
|
}
|
|
|
|
nsresult nsNameSpaceManager::AddNameSpace(already_AddRefed<nsAtom> aURI,
|
|
const int32_t aNameSpaceID) {
|
|
RefPtr<nsAtom> uri = aURI;
|
|
if (aNameSpaceID < 0) {
|
|
// We've wrapped... Can't do anything else here; just bail.
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
MOZ_ASSERT(aNameSpaceID == (int32_t)mURIArray.Length());
|
|
mURIArray.AppendElement(uri.forget());
|
|
mURIToIDTable.Put(mURIArray.LastElement(), aNameSpaceID);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsNameSpaceManager::AddDisabledNameSpace(already_AddRefed<nsAtom> aURI,
|
|
const int32_t aNameSpaceID) {
|
|
RefPtr<nsAtom> uri = aURI;
|
|
if (aNameSpaceID < 0) {
|
|
// We've wrapped... Can't do anything else here; just bail.
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
MOZ_ASSERT(aNameSpaceID == (int32_t)mURIArray.Length());
|
|
mURIArray.AppendElement(uri.forget());
|
|
mDisabledURIToIDTable.Put(mURIArray.LastElement(), aNameSpaceID);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void nsNameSpaceManager::PrefChanged(const char* aPref, void* aSelf) {
|
|
static_cast<nsNameSpaceManager*>(aSelf)->PrefChanged(aPref);
|
|
}
|
|
|
|
void nsNameSpaceManager::PrefChanged(const char* aPref) {
|
|
mMathMLDisabled = mozilla::Preferences::GetBool(kPrefMathMLDisabled);
|
|
mSVGDisabled = mozilla::Preferences::GetBool(kPrefSVGDisabled);
|
|
}
|