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6558df9772
gecko-dev/dom/base/nsDOMClassInfo.cpp
Ms2ger 6558df9772 Bug 1018103 - Remove support for the "JavaScript-global-static-nameset" category; r=bholley 
The only in-tree consumer was removed in bug 1012320; the addons MXR and a web
search suggest that it is unused outside the tree as well.
2014-06-06 10:06:26 +02:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/ArrayUtils.h"
// On top because they include basictypes.h:
#include "mozilla/dom/SmsFilter.h"
#ifdef XP_WIN
#undef GetClassName
#endif
// JavaScript includes
#include "jsapi.h"
#include "jsfriendapi.h"
#include "WrapperFactory.h"
#include "AccessCheck.h"
#include "XrayWrapper.h"
#include "xpcpublic.h"
#include "xpcprivate.h"
#include "XPCWrapper.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/RegisterBindings.h"
#include "nscore.h"
#include "nsDOMClassInfo.h"
#include "nsCRT.h"
#include "nsCRTGlue.h"
#include "nsICategoryManager.h"
#include "nsIComponentRegistrar.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsIXPConnect.h"
#include "xptcall.h"
#include "nsTArray.h"
#include "nsDocument.h" // nsDOMStyleSheetList
#include "nsDOMBlobBuilder.h"
// General helper includes
#include "nsGlobalWindow.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIDOMEvent.h"
#include "nsIDOMEventListener.h"
#include "nsContentUtils.h"
#include "nsCxPusher.h"
#include "nsIDOMGlobalPropertyInitializer.h"
#include "nsLocation.h"
#include "mozilla/Attributes.h"
#include "mozilla/Telemetry.h"
// Window scriptable helper includes
#include "nsIDocShell.h"
#include "nsJSUtils.h"
#include "nsScriptNameSpaceManager.h"
#include "nsIJSNativeInitializer.h"
#include "nsJSEnvironment.h"
// DOM base includes
#include "nsIDOMLocation.h"
#include "nsIDOMWindow.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMJSWindow.h"
#include "nsIDOMChromeWindow.h"
#include "nsIDOMConstructor.h"
// DOM core includes
#include "nsError.h"
#include "nsIDOMUserDataHandler.h"
#include "nsIDOMXULButtonElement.h"
#include "nsIDOMXULCheckboxElement.h"
#include "nsIDOMXULPopupElement.h"
// Event related includes
#include "nsIDOMEventTarget.h"
// CSS related includes
#include "nsCSSRules.h"
#include "nsIDOMCSSRule.h"
#include "nsAutoPtr.h"
#include "nsMemory.h"
// Tranformiix
#include "nsIXSLTProcessor.h"
#include "nsIXSLTProcessorPrivate.h"
// includes needed for the prototype chain interfaces
#include "nsIDOMCSSCharsetRule.h"
#include "nsIDOMCSSImportRule.h"
#include "nsIDOMCSSMediaRule.h"
#include "nsIDOMCSSFontFaceRule.h"
#include "nsIDOMCSSMozDocumentRule.h"
#include "nsIDOMCSSSupportsRule.h"
#include "nsIDOMMozCSSKeyframeRule.h"
#include "nsIDOMMozCSSKeyframesRule.h"
#include "nsIDOMCSSPageRule.h"
#include "nsIDOMCSSStyleRule.h"
#include "nsIDOMXULCommandDispatcher.h"
#include "nsIControllers.h"
#include "nsIBoxObject.h"
#ifdef MOZ_XUL
#include "nsITreeSelection.h"
#include "nsITreeContentView.h"
#include "nsITreeView.h"
#include "nsIXULTemplateBuilder.h"
#include "nsITreeColumns.h"
#endif
#include "nsIDOMXPathExpression.h"
#include "nsIDOMNSXPathExpression.h"
#include "nsIDOMXPathNSResolver.h"
#include "nsIDOMXPathResult.h"
// Storage includes
#include "nsIDOMStorage.h"
#include "nsPIDOMStorage.h"
// Drag and drop
#include "nsIDOMFile.h"
#include "nsDOMBlobBuilder.h" // nsDOMMultipartFile
#include "nsIEventListenerService.h"
#include "nsIMessageManager.h"
#include "mozilla/dom/TouchEvent.h"
#include "nsWrapperCacheInlines.h"
#include "mozilla/dom/HTMLCollectionBinding.h"
#include "nsIDOMMobileMessageManager.h"
#include "nsIDOMMozSmsMessage.h"
#include "nsIDOMMozMmsMessage.h"
#include "nsIDOMSmsFilter.h"
#include "nsIDOMSmsSegmentInfo.h"
#include "nsIDOMMozMobileMessageThread.h"
#ifdef MOZ_B2G_FM
#include "FMRadio.h"
#endif
#include "nsIDOMGlobalObjectConstructor.h"
#include "nsDebug.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/Likely.h"
#include "WindowNamedPropertiesHandler.h"
#include "nsIInterfaceInfoManager.h"
#include "mozilla/dom/EventTargetBinding.h"
#include "mozilla/dom/WindowBinding.h"
#ifdef MOZ_TIME_MANAGER
#include "TimeManager.h"
#endif
using namespace mozilla;
using namespace mozilla::dom;
static NS_DEFINE_CID(kDOMSOF_CID, NS_DOM_SCRIPT_OBJECT_FACTORY_CID);
// NOTE: DEFAULT_SCRIPTABLE_FLAGS and DOM_DEFAULT_SCRIPTABLE_FLAGS
// are defined in nsIDOMClassInfo.h.
#define WINDOW_SCRIPTABLE_FLAGS \
(nsIXPCScriptable::WANT_PRECREATE | \
nsIXPCScriptable::WANT_POSTCREATE | \
nsIXPCScriptable::WANT_ENUMERATE | \
nsIXPCScriptable::DONT_ENUM_QUERY_INTERFACE | \
nsIXPCScriptable::IS_GLOBAL_OBJECT | \
nsIXPCScriptable::WANT_OUTER_OBJECT)
#define ARRAY_SCRIPTABLE_FLAGS \
(DOM_DEFAULT_SCRIPTABLE_FLAGS | \
nsIXPCScriptable::WANT_GETPROPERTY | \
nsIXPCScriptable::WANT_ENUMERATE)
#define EVENTTARGET_SCRIPTABLE_FLAGS \
(DOM_DEFAULT_SCRIPTABLE_FLAGS | \
nsIXPCScriptable::WANT_ADDPROPERTY)
#define DOMCLASSINFO_STANDARD_FLAGS \
(nsIClassInfo::MAIN_THREAD_ONLY | \
nsIClassInfo::DOM_OBJECT | \
nsIClassInfo::SINGLETON_CLASSINFO)
#ifdef DEBUG
#define NS_DEFINE_CLASSINFO_DATA_DEBUG(_class) \
eDOMClassInfo_##_class##_id,
#else
#define NS_DEFINE_CLASSINFO_DATA_DEBUG(_class) \
// nothing
#endif
/**
* To generate the bitmap for a class that we're sure doesn't implement any of
* the interfaces in DOMCI_CASTABLE_INTERFACES.
*/
#define DOMCI_DATA_NO_CLASS(_dom_class) \
const uint32_t kDOMClassInfo_##_dom_class##_interfaces = \
0;
DOMCI_DATA_NO_CLASS(ContentFrameMessageManager)
DOMCI_DATA_NO_CLASS(ChromeMessageBroadcaster)
DOMCI_DATA_NO_CLASS(ChromeMessageSender)
DOMCI_DATA_NO_CLASS(DOMPrototype)
DOMCI_DATA_NO_CLASS(DOMConstructor)
DOMCI_DATA_NO_CLASS(UserDataHandler)
DOMCI_DATA_NO_CLASS(XULControlElement)
DOMCI_DATA_NO_CLASS(XULLabeledControlElement)
DOMCI_DATA_NO_CLASS(XULButtonElement)
DOMCI_DATA_NO_CLASS(XULCheckboxElement)
DOMCI_DATA_NO_CLASS(XULPopupElement)
#define NS_DEFINE_CLASSINFO_DATA_HELPER(_class, _helper, _flags, \
_chromeOnly, _allowXBL) \
{ #_class, \
nullptr, \
{ _helper::doCreate }, \
nullptr, \
nullptr, \
nullptr, \
_flags, \
true, \
0, \
_chromeOnly, \
_allowXBL, \
false, \
NS_DEFINE_CLASSINFO_DATA_DEBUG(_class) \
},
#define NS_DEFINE_CLASSINFO_DATA(_class, _helper, _flags) \
NS_DEFINE_CLASSINFO_DATA_HELPER(_class, _helper, _flags, false, false)
#define NS_DEFINE_CHROME_ONLY_CLASSINFO_DATA(_class, _helper, _flags) \
NS_DEFINE_CLASSINFO_DATA_HELPER(_class, _helper, _flags, true, false)
#define NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(_class, _helper, _flags) \
NS_DEFINE_CLASSINFO_DATA_HELPER(_class, _helper, _flags, true, true)
// This list of NS_DEFINE_CLASSINFO_DATA macros is what gives the DOM
// classes their correct behavior when used through XPConnect. The
// arguments that are passed to NS_DEFINE_CLASSINFO_DATA are
//
// 1. Class name as it should appear in JavaScript, this name is also
// used to find the id of the class in nsDOMClassInfo
// (i.e. e<classname>_id)
// 2. Scriptable helper class
// 3. nsIClassInfo/nsIXPCScriptable flags (i.e. for GetScriptableFlags)
static nsDOMClassInfoData sClassInfoData[] = {
// Base classes
// The Window class lets you QI into interfaces that are not in the
// flattened set (i.e. nsIXPCScriptable::CLASSINFO_INTERFACES_ONLY
// is not set), because of this make sure all scriptable interfaces
// that are implemented by nsGlobalWindow can securely be exposed
// to JS.
NS_DEFINE_CLASSINFO_DATA(Window, nsWindowSH,
DEFAULT_SCRIPTABLE_FLAGS |
WINDOW_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(Location, nsLocationSH,
((DOM_DEFAULT_SCRIPTABLE_FLAGS |
nsIXPCScriptable::WANT_ADDPROPERTY) &
~nsIXPCScriptable::ALLOW_PROP_MODS_TO_PROTOTYPE))
NS_DEFINE_CLASSINFO_DATA(DOMPrototype, nsDOMConstructorSH,
DOM_BASE_SCRIPTABLE_FLAGS |
nsIXPCScriptable::WANT_PRECREATE |
nsIXPCScriptable::WANT_NEWRESOLVE |
nsIXPCScriptable::WANT_HASINSTANCE |
nsIXPCScriptable::DONT_ENUM_QUERY_INTERFACE)
NS_DEFINE_CLASSINFO_DATA(DOMConstructor, nsDOMConstructorSH,
DOM_BASE_SCRIPTABLE_FLAGS |
nsIXPCScriptable::WANT_PRECREATE |
nsIXPCScriptable::WANT_NEWRESOLVE |
nsIXPCScriptable::WANT_HASINSTANCE |
nsIXPCScriptable::WANT_CALL |
nsIXPCScriptable::WANT_CONSTRUCT |
nsIXPCScriptable::DONT_ENUM_QUERY_INTERFACE)
// Misc Core related classes
// CSS classes
NS_DEFINE_CLASSINFO_DATA(CSSStyleRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSCharsetRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSImportRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSMediaRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSNameSpaceRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
// XUL classes
#ifdef MOZ_XUL
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULCommandDispatcher, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
#endif
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULControllers, nsNonDOMObjectSH,
DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(BoxObject, nsDOMGenericSH,
DEFAULT_SCRIPTABLE_FLAGS)
#ifdef MOZ_XUL
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(TreeSelection, nsDOMGenericSH,
DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(TreeContentView, nsDOMGenericSH,
DEFAULT_SCRIPTABLE_FLAGS)
#endif
// DOM Chrome Window class.
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(ChromeWindow, nsWindowSH,
DEFAULT_SCRIPTABLE_FLAGS |
WINDOW_SCRIPTABLE_FLAGS)
#ifdef MOZ_XUL
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULTemplateBuilder, nsDOMGenericSH,
DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULTreeBuilder, nsDOMGenericSH,
DEFAULT_SCRIPTABLE_FLAGS)
#endif
#ifdef MOZ_XUL
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(TreeColumn, nsDOMGenericSH,
DEFAULT_SCRIPTABLE_FLAGS)
#endif
NS_DEFINE_CLASSINFO_DATA(CSSMozDocumentRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSSupportsRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(XSLTProcessor, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(XPathExpression, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(XPathNSResolver, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(XPathResult, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
// WhatWG Storage
// mrbkap says we don't need WANT_ADDPROPERTY on Storage objects
// since a call to addProperty() is always followed by a call to
// setProperty(), except in the case when a getter or setter is set
// for a property. But we don't care about getters or setters here.
NS_DEFINE_CLASSINFO_DATA(Storage, nsStorage2SH,
DOM_DEFAULT_SCRIPTABLE_FLAGS |
nsIXPCScriptable::WANT_NEWRESOLVE |
nsIXPCScriptable::WANT_GETPROPERTY |
nsIXPCScriptable::WANT_SETPROPERTY |
nsIXPCScriptable::WANT_DELPROPERTY |
nsIXPCScriptable::DONT_ENUM_STATIC_PROPS |
nsIXPCScriptable::WANT_NEWENUMERATE)
NS_DEFINE_CLASSINFO_DATA(Blob, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(File, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(ModalContentWindow, nsWindowSH,
DEFAULT_SCRIPTABLE_FLAGS |
WINDOW_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozMobileMessageManager, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozSmsMessage, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozMmsMessage, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozSmsFilter, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozSmsSegmentInfo, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozMobileMessageThread, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSFontFaceRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_ONLY_CLASSINFO_DATA(ContentFrameMessageManager, nsEventTargetSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS |
nsIXPCScriptable::IS_GLOBAL_OBJECT)
NS_DEFINE_CHROME_ONLY_CLASSINFO_DATA(ChromeMessageBroadcaster, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_ONLY_CLASSINFO_DATA(ChromeMessageSender, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozCSSKeyframeRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(MozCSSKeyframesRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSPageRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CLASSINFO_DATA(CSSFontFeatureValuesRule, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(UserDataHandler, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULControlElement, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULLabeledControlElement, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULButtonElement, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULCheckboxElement, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
NS_DEFINE_CHROME_XBL_CLASSINFO_DATA(XULPopupElement, nsDOMGenericSH,
DOM_DEFAULT_SCRIPTABLE_FLAGS)
};
#define NS_DEFINE_CONTRACT_CTOR(_class, _contract_id) \
static nsresult \
_class##Ctor(nsISupports** aInstancePtrResult) \
{ \
nsresult rv = NS_OK; \
nsCOMPtr<nsISupports> native = do_CreateInstance(_contract_id, &rv); \
native.forget(aInstancePtrResult); \
return rv; \
}
NS_DEFINE_CONTRACT_CTOR(XSLTProcessor,
"@mozilla.org/document-transformer;1?type=xslt")
#undef NS_DEFINE_CONTRACT_CTOR
struct nsConstructorFuncMapData
{
int32_t mDOMClassInfoID;
nsDOMConstructorFunc mConstructorFunc;
};
#define NS_DEFINE_CONSTRUCTOR_FUNC_DATA(_class, _func) \
{ eDOMClassInfo_##_class##_id, _func },
static const nsConstructorFuncMapData kConstructorFuncMap[] =
{
NS_DEFINE_CONSTRUCTOR_FUNC_DATA(Blob, nsDOMMultipartFile::NewBlob)
NS_DEFINE_CONSTRUCTOR_FUNC_DATA(File, nsDOMMultipartFile::NewFile)
NS_DEFINE_CONSTRUCTOR_FUNC_DATA(MozSmsFilter, SmsFilter::NewSmsFilter)
NS_DEFINE_CONSTRUCTOR_FUNC_DATA(XSLTProcessor, XSLTProcessorCtor)
};
#undef NS_DEFINE_CONSTRUCTOR_FUNC_DATA
nsIXPConnect *nsDOMClassInfo::sXPConnect = nullptr;
nsIScriptSecurityManager *nsDOMClassInfo::sSecMan = nullptr;
bool nsDOMClassInfo::sIsInitialized = false;
jsid nsDOMClassInfo::sLocation_id = JSID_VOID;
jsid nsDOMClassInfo::sConstructor_id = JSID_VOID;
jsid nsDOMClassInfo::sTop_id = JSID_VOID;
jsid nsDOMClassInfo::sDocument_id = JSID_VOID;
jsid nsDOMClassInfo::sWrappedJSObject_id = JSID_VOID;
static const JSClass *sObjectClass = nullptr;
/**
* Set our JSClass pointer for the Object class
*/
static void
FindObjectClass(JSContext* cx, JSObject* aGlobalObject)
{
NS_ASSERTION(!sObjectClass,
"Double set of sObjectClass");
JS::Rooted<JSObject*> obj(cx), proto(cx, aGlobalObject);
do {
obj = proto;
js::GetObjectProto(cx, obj, &proto);
} while (proto);
sObjectClass = js::GetObjectJSClass(obj);
}
static inline JSString *
IdToString(JSContext *cx, jsid id)
{
if (JSID_IS_STRING(id))
return JSID_TO_STRING(id);
JS::Rooted<JS::Value> idval(cx);
if (!::JS_IdToValue(cx, id, &idval))
return nullptr;
return JS::ToString(cx, idval);
}
static inline nsresult
WrapNative(JSContext *cx, nsISupports *native,
nsWrapperCache *cache, const nsIID* aIID, JS::MutableHandle<JS::Value> vp,
bool aAllowWrapping)
{
if (!native) {
vp.setNull();
return NS_OK;
}
JSObject *wrapper = xpc_FastGetCachedWrapper(cx, cache, vp);
if (wrapper) {
return NS_OK;
}
JS::Rooted<JSObject*> scope(cx, JS::CurrentGlobalOrNull(cx));
return nsDOMClassInfo::XPConnect()->WrapNativeToJSVal(cx, scope, native,
cache, aIID,
aAllowWrapping, vp);
}
static inline nsresult
WrapNative(JSContext *cx, nsISupports *native, const nsIID* aIID,
bool aAllowWrapping, JS::MutableHandle<JS::Value> vp)
{
return WrapNative(cx, native, nullptr, aIID, vp, aAllowWrapping);
}
// Same as the WrapNative above, but use these if aIID is nsISupports' IID.
static inline nsresult
WrapNative(JSContext *cx, nsISupports *native,
bool aAllowWrapping, JS::MutableHandle<JS::Value> vp)
{
return WrapNative(cx, native, nullptr, nullptr, vp, aAllowWrapping);
}
// Helper to handle torn-down inner windows.
static inline nsresult
SetParentToWindow(nsGlobalWindow *win, JSObject **parent)
{
MOZ_ASSERT(win);
MOZ_ASSERT(win->IsInnerWindow());
*parent = win->FastGetGlobalJSObject();
if (MOZ_UNLIKELY(!*parent)) {
// The inner window has been torn down. The scope is dying, so don't create
// any new wrappers.
return NS_ERROR_FAILURE;
}
return NS_OK;
}
// static
nsISupports *
nsDOMClassInfo::GetNative(nsIXPConnectWrappedNative *wrapper, JSObject *obj)
{
return wrapper ? wrapper->Native() : static_cast<nsISupports*>(js::GetObjectPrivate(obj));
}
nsresult
nsDOMClassInfo::DefineStaticJSVals(JSContext *cx)
{
#define SET_JSID_TO_STRING(_id, _cx, _str) \
if (JSString *str = ::JS_InternString(_cx, _str)) \
_id = INTERNED_STRING_TO_JSID(_cx, str); \
else \
return NS_ERROR_OUT_OF_MEMORY;
SET_JSID_TO_STRING(sLocation_id, cx, "location");
SET_JSID_TO_STRING(sConstructor_id, cx, "constructor");
SET_JSID_TO_STRING(sTop_id, cx, "top");
SET_JSID_TO_STRING(sDocument_id, cx, "document");
SET_JSID_TO_STRING(sWrappedJSObject_id, cx, "wrappedJSObject");
return NS_OK;
}
// static
bool
nsDOMClassInfo::ObjectIsNativeWrapper(JSContext* cx, JSObject* obj)
{
return xpc::WrapperFactory::IsXrayWrapper(obj) &&
xpc::AccessCheck::wrapperSubsumes(obj);
}
nsDOMClassInfo::nsDOMClassInfo(nsDOMClassInfoData* aData) : mData(aData)
{
}
nsDOMClassInfo::~nsDOMClassInfo()
{
if (IS_EXTERNAL(mData->mCachedClassInfo)) {
// Some compilers don't like delete'ing a const nsDOMClassInfo*
nsDOMClassInfoData* data = const_cast<nsDOMClassInfoData*>(mData);
delete static_cast<nsExternalDOMClassInfoData*>(data);
}
}
NS_IMPL_ADDREF(nsDOMClassInfo)
NS_IMPL_RELEASE(nsDOMClassInfo)
NS_INTERFACE_MAP_BEGIN(nsDOMClassInfo)
if (aIID.Equals(NS_GET_IID(nsXPCClassInfo)))
foundInterface = static_cast<nsIClassInfo*>(
static_cast<nsXPCClassInfo*>(this));
else
NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
NS_INTERFACE_MAP_ENTRY(nsIClassInfo)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIClassInfo)
NS_INTERFACE_MAP_END
static const JSClass sDOMConstructorProtoClass = {
"DOM Constructor.prototype", 0,
JS_PropertyStub, JS_DeletePropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, nullptr
};
static const char *
CutPrefix(const char *aName) {
static const char prefix_nsIDOM[] = "nsIDOM";
static const char prefix_nsI[] = "nsI";
if (strncmp(aName, prefix_nsIDOM, sizeof(prefix_nsIDOM) - 1) == 0) {
return aName + sizeof(prefix_nsIDOM) - 1;
}
if (strncmp(aName, prefix_nsI, sizeof(prefix_nsI) - 1) == 0) {
return aName + sizeof(prefix_nsI) - 1;
}
return aName;
}
// static
nsresult
nsDOMClassInfo::RegisterClassProtos(int32_t aClassInfoID)
{
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
NS_ENSURE_TRUE(nameSpaceManager, NS_ERROR_NOT_INITIALIZED);
bool found_old;
const nsIID *primary_iid = sClassInfoData[aClassInfoID].mProtoChainInterface;
if (!primary_iid || primary_iid == &NS_GET_IID(nsISupports)) {
return NS_OK;
}
nsCOMPtr<nsIInterfaceInfoManager>
iim(do_GetService(NS_INTERFACEINFOMANAGER_SERVICE_CONTRACTID));
NS_ENSURE_TRUE(iim, NS_ERROR_NOT_AVAILABLE);
nsCOMPtr<nsIInterfaceInfo> if_info;
bool first = true;
iim->GetInfoForIID(primary_iid, getter_AddRefs(if_info));
while (if_info) {
const nsIID *iid = nullptr;
if_info->GetIIDShared(&iid);
NS_ENSURE_TRUE(iid, NS_ERROR_UNEXPECTED);
if (iid->Equals(NS_GET_IID(nsISupports))) {
break;
}
const char *name = nullptr;
if_info->GetNameShared(&name);
NS_ENSURE_TRUE(name, NS_ERROR_UNEXPECTED);
nameSpaceManager->RegisterClassProto(CutPrefix(name), iid, &found_old);
if (first) {
first = false;
} else if (found_old) {
break;
}
nsCOMPtr<nsIInterfaceInfo> tmp(if_info);
tmp->GetParent(getter_AddRefs(if_info));
}
return NS_OK;
}
// static
nsresult
nsDOMClassInfo::RegisterExternalClasses()
{
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
NS_ENSURE_TRUE(nameSpaceManager, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIComponentRegistrar> registrar;
nsresult rv = NS_GetComponentRegistrar(getter_AddRefs(registrar));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsICategoryManager> cm =
do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsISimpleEnumerator> e;
rv = cm->EnumerateCategory(JAVASCRIPT_DOM_CLASS, getter_AddRefs(e));
NS_ENSURE_SUCCESS(rv, rv);
nsXPIDLCString contractId;
nsAutoCString categoryEntry;
nsCOMPtr<nsISupports> entry;
while (NS_SUCCEEDED(e->GetNext(getter_AddRefs(entry)))) {
nsCOMPtr<nsISupportsCString> category(do_QueryInterface(entry));
if (!category) {
NS_WARNING("Category entry not an nsISupportsCString!");
continue;
}
rv = category->GetData(categoryEntry);
cm->GetCategoryEntry(JAVASCRIPT_DOM_CLASS, categoryEntry.get(),
getter_Copies(contractId));
NS_ENSURE_SUCCESS(rv, rv);
nsCID *cid;
rv = registrar->ContractIDToCID(contractId, &cid);
if (NS_FAILED(rv)) {
NS_WARNING("Bad contract id registered with the script namespace manager");
continue;
}
rv = nameSpaceManager->RegisterExternalClassName(categoryEntry.get(), *cid);
nsMemory::Free(cid);
NS_ENSURE_SUCCESS(rv, rv);
}
return nameSpaceManager->RegisterExternalInterfaces(true);
}
#define _DOM_CLASSINFO_MAP_BEGIN(_class, _ifptr, _has_class_if) \
{ \
nsDOMClassInfoData &d = sClassInfoData[eDOMClassInfo_##_class##_id]; \
d.mProtoChainInterface = _ifptr; \
d.mHasClassInterface = _has_class_if; \
d.mInterfacesBitmap = kDOMClassInfo_##_class##_interfaces; \
static const nsIID *interface_list[] = {
#define DOM_CLASSINFO_MAP_BEGIN(_class, _interface) \
_DOM_CLASSINFO_MAP_BEGIN(_class, &NS_GET_IID(_interface), true)
#define DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(_class, _interface) \
_DOM_CLASSINFO_MAP_BEGIN(_class, &NS_GET_IID(_interface), false)
#define DOM_CLASSINFO_MAP_ENTRY(_if) \
&NS_GET_IID(_if),
#define DOM_CLASSINFO_MAP_CONDITIONAL_ENTRY(_if, _cond) \
(_cond) ? &NS_GET_IID(_if) : nullptr,
#define DOM_CLASSINFO_MAP_END \
nullptr \
}; \
\
/* Compact the interface list */ \
size_t count = ArrayLength(interface_list); \
/* count is the number of array entries, which is one greater than the */ \
/* number of interfaces due to the terminating null */ \
for (size_t i = 0; i < count - 1; ++i) { \
if (!interface_list[i]) { \
/* We are moving the element at index i+1 and successors, */ \
/* so we must move only count - (i+1) elements total. */ \
memmove(&interface_list[i], &interface_list[i+1], \
sizeof(nsIID*) * (count - (i+1))); \
/* Make sure to examine the new pointer we ended up with at this */ \
/* slot, since it may be null too */ \
--i; \
--count; \
} \
} \
\
d.mInterfaces = interface_list; \
}
#ifdef MOZ_B2G
#define DOM_CLASSINFO_WINDOW_MAP_ENTRIES \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMWindow) \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMWindowB2G) \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMJSWindow) \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMEventTarget) \
DOM_CLASSINFO_MAP_ENTRY(nsIInlineEventHandlers) \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMWindowPerformance) \
DOM_CLASSINFO_MAP_ENTRY(nsIInterfaceRequestor) \
DOM_CLASSINFO_MAP_CONDITIONAL_ENTRY(nsITouchEventReceiver, \
TouchEvent::PrefEnabled())
#else // !MOZ_B2G
#define DOM_CLASSINFO_WINDOW_MAP_ENTRIES \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMWindow) \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMJSWindow) \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMEventTarget) \
DOM_CLASSINFO_MAP_ENTRY(nsIInlineEventHandlers) \
DOM_CLASSINFO_MAP_ENTRY(nsIDOMWindowPerformance) \
DOM_CLASSINFO_MAP_ENTRY(nsIInterfaceRequestor) \
DOM_CLASSINFO_MAP_CONDITIONAL_ENTRY(nsITouchEventReceiver, \
TouchEvent::PrefEnabled())
#endif // MOZ_B2G
nsresult
nsDOMClassInfo::Init()
{
/* Errors that can trigger early returns are done first,
otherwise nsDOMClassInfo is left in a half inited state. */
static_assert(sizeof(uintptr_t) == sizeof(void*),
"BAD! You'll need to adjust the size of uintptr_t to the "
"size of a pointer on your platform.");
NS_ENSURE_TRUE(!sIsInitialized, NS_ERROR_ALREADY_INITIALIZED);
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
NS_ENSURE_TRUE(nameSpaceManager, NS_ERROR_NOT_INITIALIZED);
nsresult rv = CallGetService(nsIXPConnect::GetCID(), &sXPConnect);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIXPCFunctionThisTranslator> elt = new nsEventListenerThisTranslator();
sXPConnect->SetFunctionThisTranslator(NS_GET_IID(nsIDOMEventListener), elt);
nsCOMPtr<nsIScriptSecurityManager> sm =
do_GetService("@mozilla.org/scriptsecuritymanager;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
sSecMan = sm;
NS_ADDREF(sSecMan);
AutoSafeJSContext cx;
DOM_CLASSINFO_MAP_BEGIN(Window, nsIDOMWindow)
DOM_CLASSINFO_WINDOW_MAP_ENTRIES
#ifdef MOZ_WEBSPEECH
DOM_CLASSINFO_MAP_ENTRY(nsISpeechSynthesisGetter)
#endif
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(Location, nsIDOMLocation)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMLocation)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(DOMPrototype, nsIDOMDOMConstructor)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMDOMConstructor)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(DOMConstructor, nsIDOMDOMConstructor)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMDOMConstructor)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSStyleRule, nsIDOMCSSStyleRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSStyleRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSCharsetRule, nsIDOMCSSCharsetRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSCharsetRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSImportRule, nsIDOMCSSImportRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSImportRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSMediaRule, nsIDOMCSSMediaRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSMediaRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(CSSNameSpaceRule, nsIDOMCSSRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSRule)
DOM_CLASSINFO_MAP_END
#ifdef MOZ_XUL
DOM_CLASSINFO_MAP_BEGIN(XULCommandDispatcher, nsIDOMXULCommandDispatcher)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXULCommandDispatcher)
DOM_CLASSINFO_MAP_END
#endif
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(XULControllers, nsIControllers)
DOM_CLASSINFO_MAP_ENTRY(nsIControllers)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(BoxObject, nsIBoxObject)
DOM_CLASSINFO_MAP_ENTRY(nsIBoxObject)
DOM_CLASSINFO_MAP_END
#ifdef MOZ_XUL
DOM_CLASSINFO_MAP_BEGIN(TreeSelection, nsITreeSelection)
DOM_CLASSINFO_MAP_ENTRY(nsITreeSelection)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(TreeContentView, nsITreeContentView)
DOM_CLASSINFO_MAP_ENTRY(nsITreeContentView)
DOM_CLASSINFO_MAP_ENTRY(nsITreeView)
DOM_CLASSINFO_MAP_END
#endif
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(ChromeWindow, nsIDOMWindow)
DOM_CLASSINFO_WINDOW_MAP_ENTRIES
DOM_CLASSINFO_MAP_ENTRY(nsIDOMChromeWindow)
#ifdef MOZ_WEBSPEECH
DOM_CLASSINFO_MAP_ENTRY(nsISpeechSynthesisGetter)
#endif
DOM_CLASSINFO_MAP_END
#ifdef MOZ_XUL
DOM_CLASSINFO_MAP_BEGIN(XULTemplateBuilder, nsIXULTemplateBuilder)
DOM_CLASSINFO_MAP_ENTRY(nsIXULTemplateBuilder)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(XULTreeBuilder, nsIXULTreeBuilder)
DOM_CLASSINFO_MAP_ENTRY(nsIXULTreeBuilder)
DOM_CLASSINFO_MAP_ENTRY(nsIXULTemplateBuilder)
DOM_CLASSINFO_MAP_ENTRY(nsITreeView)
DOM_CLASSINFO_MAP_END
#endif
#ifdef MOZ_XUL
DOM_CLASSINFO_MAP_BEGIN(TreeColumn, nsITreeColumn)
DOM_CLASSINFO_MAP_ENTRY(nsITreeColumn)
DOM_CLASSINFO_MAP_END
#endif
DOM_CLASSINFO_MAP_BEGIN(CSSMozDocumentRule, nsIDOMCSSMozDocumentRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSMozDocumentRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSSupportsRule, nsIDOMCSSSupportsRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSSupportsRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(XSLTProcessor, nsIXSLTProcessor)
DOM_CLASSINFO_MAP_ENTRY(nsIXSLTProcessor)
DOM_CLASSINFO_MAP_ENTRY(nsIXSLTProcessorPrivate)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(XPathExpression, nsIDOMXPathExpression)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXPathExpression)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMNSXPathExpression)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(XPathNSResolver, nsIDOMXPathNSResolver)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXPathNSResolver)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(XPathResult, nsIDOMXPathResult)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXPathResult)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(Storage, nsIDOMStorage)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMStorage)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(Blob, nsIDOMBlob)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMBlob)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(File, nsIDOMFile)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMBlob)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMFile)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(ModalContentWindow, nsIDOMWindow)
DOM_CLASSINFO_WINDOW_MAP_ENTRIES
DOM_CLASSINFO_MAP_ENTRY(nsIDOMModalContentWindow)
#ifdef MOZ_WEBSPEECH
DOM_CLASSINFO_MAP_ENTRY(nsISpeechSynthesisGetter)
#endif
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozMobileMessageManager, nsIDOMMozMobileMessageManager)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozMobileMessageManager)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozSmsMessage, nsIDOMMozSmsMessage)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozSmsMessage)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozMmsMessage, nsIDOMMozMmsMessage)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozMmsMessage)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozSmsFilter, nsIDOMMozSmsFilter)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozSmsFilter)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozSmsSegmentInfo, nsIDOMMozSmsSegmentInfo)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozSmsSegmentInfo)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozMobileMessageThread, nsIDOMMozMobileMessageThread)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozMobileMessageThread)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSFontFaceRule, nsIDOMCSSFontFaceRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSFontFaceRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(ContentFrameMessageManager, nsISupports)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMEventTarget)
DOM_CLASSINFO_MAP_ENTRY(nsIMessageListenerManager)
DOM_CLASSINFO_MAP_ENTRY(nsIMessageSender)
DOM_CLASSINFO_MAP_ENTRY(nsISyncMessageSender)
DOM_CLASSINFO_MAP_ENTRY(nsIContentFrameMessageManager)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(ChromeMessageBroadcaster, nsISupports)
DOM_CLASSINFO_MAP_ENTRY(nsIFrameScriptLoader)
DOM_CLASSINFO_MAP_ENTRY(nsIMessageListenerManager)
DOM_CLASSINFO_MAP_ENTRY(nsIMessageBroadcaster)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(ChromeMessageSender, nsISupports)
DOM_CLASSINFO_MAP_ENTRY(nsIProcessChecker)
DOM_CLASSINFO_MAP_ENTRY(nsIFrameScriptLoader)
DOM_CLASSINFO_MAP_ENTRY(nsIMessageListenerManager)
DOM_CLASSINFO_MAP_ENTRY(nsIMessageSender)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozCSSKeyframeRule, nsIDOMMozCSSKeyframeRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozCSSKeyframeRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(MozCSSKeyframesRule, nsIDOMMozCSSKeyframesRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMMozCSSKeyframesRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSPageRule, nsIDOMCSSPageRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSPageRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN(CSSFontFeatureValuesRule, nsIDOMCSSFontFeatureValuesRule)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMCSSFontFeatureValuesRule)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(UserDataHandler, nsIDOMUserDataHandler)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMUserDataHandler)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(XULControlElement, nsIDOMXULControlElement)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXULControlElement)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(XULLabeledControlElement, nsIDOMXULLabeledControlElement)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXULLabeledControlElement)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(XULButtonElement, nsIDOMXULButtonElement)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXULButtonElement)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(XULCheckboxElement, nsIDOMXULCheckboxElement)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXULCheckboxElement)
DOM_CLASSINFO_MAP_END
DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(XULPopupElement, nsIDOMXULPopupElement)
DOM_CLASSINFO_MAP_ENTRY(nsIDOMXULPopupElement)
DOM_CLASSINFO_MAP_END
static_assert(MOZ_ARRAY_LENGTH(sClassInfoData) == eDOMClassInfoIDCount,
"The number of items in sClassInfoData doesn't match the "
"number of nsIDOMClassInfo ID's, this is bad! Fix it!");
#ifdef DEBUG
for (size_t i = 0; i < eDOMClassInfoIDCount; i++) {
if (!sClassInfoData[i].u.mConstructorFptr ||
sClassInfoData[i].mDebugID != i) {
MOZ_CRASH("Class info data out of sync, you forgot to update "
"nsDOMClassInfo.h and nsDOMClassInfo.cpp! Fix this, "
"mozilla will not work without this fixed!");
}
}
for (size_t i = 0; i < eDOMClassInfoIDCount; i++) {
if (!sClassInfoData[i].mInterfaces) {
MOZ_CRASH("Class info data without an interface list! Fix this, "
"mozilla will not work without this fixed!");
}
}
#endif
// Initialize static JSString's
DefineStaticJSVals(cx);
int32_t i;
for (i = 0; i < eDOMClassInfoIDCount; ++i) {
if (i == eDOMClassInfo_DOMPrototype_id) {
continue;
}
nsDOMClassInfoData& data = sClassInfoData[i];
nameSpaceManager->RegisterClassName(data.mName, i, data.mChromeOnly,
data.mAllowXBL, &data.mNameUTF16);
}
for (i = 0; i < eDOMClassInfoIDCount; ++i) {
RegisterClassProtos(i);
}
RegisterExternalClasses();
// Register new DOM bindings
mozilla::dom::Register(nameSpaceManager);
sIsInitialized = true;
return NS_OK;
}
// static
int32_t
nsDOMClassInfo::GetArrayIndexFromId(JSContext *cx, JS::Handle<jsid> id, bool *aIsNumber)
{
if (aIsNumber) {
*aIsNumber = false;
}
int i;
if (JSID_IS_INT(id)) {
i = JSID_TO_INT(id);
} else {
JS::Rooted<JS::Value> idval(cx);
double array_index;
if (!::JS_IdToValue(cx, id, &idval) ||
!JS::ToNumber(cx, idval, &array_index) ||
!::JS_DoubleIsInt32(array_index, &i)) {
return -1;
}
}
if (aIsNumber) {
*aIsNumber = true;
}
return i;
}
NS_IMETHODIMP
nsDOMClassInfo::GetInterfaces(uint32_t *aCount, nsIID ***aArray)
{
uint32_t count = 0;
while (mData->mInterfaces[count]) {
count++;
}
*aCount = count;
if (!count) {
*aArray = nullptr;
return NS_OK;
}
*aArray = static_cast<nsIID **>(nsMemory::Alloc(count * sizeof(nsIID *)));
NS_ENSURE_TRUE(*aArray, NS_ERROR_OUT_OF_MEMORY);
uint32_t i;
for (i = 0; i < count; i++) {
nsIID *iid = static_cast<nsIID *>(nsMemory::Clone(mData->mInterfaces[i],
sizeof(nsIID)));
if (!iid) {
NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(i, *aArray);
return NS_ERROR_OUT_OF_MEMORY;
}
*((*aArray) + i) = iid;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::GetHelperForLanguage(uint32_t language, nsISupports **_retval)
{
if (language == nsIProgrammingLanguage::JAVASCRIPT) {
*_retval = static_cast<nsIXPCScriptable *>(this);
NS_ADDREF(*_retval);
} else {
*_retval = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::GetContractID(char **aContractID)
{
*aContractID = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::GetClassDescription(char **aClassDescription)
{
return GetClassName(aClassDescription);
}
NS_IMETHODIMP
nsDOMClassInfo::GetClassID(nsCID **aClassID)
{
*aClassID = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::GetClassIDNoAlloc(nsCID *aClassID)
{
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsDOMClassInfo::GetImplementationLanguage(uint32_t *aImplLanguage)
{
*aImplLanguage = nsIProgrammingLanguage::CPLUSPLUS;
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::GetFlags(uint32_t *aFlags)
{
*aFlags = DOMCLASSINFO_STANDARD_FLAGS;
return NS_OK;
}
// nsIXPCScriptable
NS_IMETHODIMP
nsDOMClassInfo::GetClassName(char **aClassName)
{
*aClassName = NS_strdup(mData->mName);
return NS_OK;
}
// virtual
uint32_t
nsDOMClassInfo::GetScriptableFlags()
{
return mData->mScriptableFlags;
}
NS_IMETHODIMP
nsDOMClassInfo::PreCreate(nsISupports *nativeObj, JSContext *cx,
JSObject *globalObj, JSObject **parentObj)
{
*parentObj = globalObj;
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::Create(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *obj)
{
NS_WARNING("nsDOMClassInfo::Create Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::PostCreate(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *obj)
{
NS_WARNING("nsDOMClassInfo::PostCreate Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::PostTransplant(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *obj)
{
MOZ_CRASH("nsDOMClassInfo::PostTransplant Don't call me!");
}
NS_IMETHODIMP
nsDOMClassInfo::AddProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid id, jsval *vp,
bool *_retval)
{
NS_WARNING("nsDOMClassInfo::AddProperty Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::DelProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid id, bool *_retval)
{
NS_WARNING("nsDOMClassInfo::DelProperty Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::GetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid id, jsval *vp,
bool *_retval)
{
NS_WARNING("nsDOMClassInfo::GetProperty Don't call me!");
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::SetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid id, jsval *vp,
bool *_retval)
{
NS_WARNING("nsDOMClassInfo::SetProperty Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::Enumerate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, bool *_retval)
{
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::NewEnumerate(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *obj, uint32_t enum_op,
jsval *statep, jsid *idp, bool *_retval)
{
NS_WARNING("nsDOMClassInfo::NewEnumerate Don't call me!");
return NS_ERROR_UNEXPECTED;
}
nsresult
nsDOMClassInfo::ResolveConstructor(JSContext *cx, JSObject *aObj,
JSObject **objp)
{
JS::Rooted<JSObject*> obj(cx, aObj);
JS::Rooted<JSObject*> global(cx, ::JS_GetGlobalForObject(cx, obj));
JS::Rooted<JS::Value> val(cx);
if (!::JS_LookupProperty(cx, global, mData->mName, &val)) {
return NS_ERROR_UNEXPECTED;
}
if (!val.isPrimitive()) {
// If val is not an (non-null) object there either is no
// constructor for this class, or someone messed with
// window.classname, just fall through and let the JS engine
// return the Object constructor.
JS::Rooted<jsid> id(cx, sConstructor_id);
if (!::JS_DefinePropertyById(cx, obj, id, val, JSPROP_ENUMERATE,
JS_PropertyStub, JS_StrictPropertyStub)) {
return NS_ERROR_UNEXPECTED;
}
*objp = obj;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid id, JSObject **objp,
bool *_retval)
{
if (id == sConstructor_id) {
return ResolveConstructor(cx, obj, objp);
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMClassInfo::Convert(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, uint32_t type, jsval *vp,
bool *_retval)
{
NS_WARNING("nsDOMClassInfo::Convert Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::Finalize(nsIXPConnectWrappedNative *wrapper, JSFreeOp *fop,
JSObject *obj)
{
NS_WARNING("nsDOMClassInfo::Finalize Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::Call(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, const JS::CallArgs &args, bool *_retval)
{
NS_WARNING("nsDOMClassInfo::Call Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::Construct(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, const JS::CallArgs &args,
bool *_retval)
{
NS_WARNING("nsDOMClassInfo::Construct Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::HasInstance(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, JS::Handle<JS::Value> val, bool *bp,
bool *_retval)
{
NS_WARNING("nsDOMClassInfo::HasInstance Don't call me!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsDOMClassInfo::OuterObject(nsIXPConnectWrappedNative *wrapper, JSContext * cx,
JSObject * obj, JSObject * *_retval)
{
NS_WARNING("nsDOMClassInfo::OuterObject Don't call me!");
return NS_ERROR_UNEXPECTED;
}
static nsresult
GetExternalClassInfo(nsScriptNameSpaceManager *aNameSpaceManager,
const nsAString &aName,
const nsGlobalNameStruct *aStruct,
const nsGlobalNameStruct **aResult)
{
NS_ASSERTION(aStruct->mType ==
nsGlobalNameStruct::eTypeExternalClassInfoCreator,
"Wrong type!");
nsresult rv;
nsCOMPtr<nsIDOMCIExtension> creator(do_CreateInstance(aStruct->mCID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMScriptObjectFactory> sof(do_GetService(kDOMSOF_CID));
NS_ENSURE_TRUE(sof, NS_ERROR_FAILURE);
rv = creator->RegisterDOMCI(NS_ConvertUTF16toUTF8(aName).get(), sof);
NS_ENSURE_SUCCESS(rv, rv);
const nsGlobalNameStruct *name_struct = aNameSpaceManager->LookupName(aName);
if (name_struct &&
name_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {
*aResult = name_struct;
}
else {
NS_ERROR("Couldn't get the DOM ClassInfo data.");
*aResult = nullptr;
}
return NS_OK;
}
static nsresult
ResolvePrototype(nsIXPConnect *aXPConnect, nsGlobalWindow *aWin, JSContext *cx,
JS::Handle<JSObject*> obj, const char16_t *name,
const nsDOMClassInfoData *ci_data,
const nsGlobalNameStruct *name_struct,
nsScriptNameSpaceManager *nameSpaceManager,
JSObject *dot_prototype,
JS::MutableHandle<JSPropertyDescriptor> ctorDesc);
NS_IMETHODIMP
nsDOMClassInfo::PostCreatePrototype(JSContext * cx, JSObject * aProto)
{
uint32_t flags = (mData->mScriptableFlags & DONT_ENUM_STATIC_PROPS)
? 0
: JSPROP_ENUMERATE;
uint32_t count = 0;
while (mData->mInterfaces[count]) {
count++;
}
JS::Rooted<JSObject*> proto(cx, aProto);
if (!xpc::DOM_DefineQuickStubs(cx, proto, flags, count, mData->mInterfaces)) {
JS_ClearPendingException(cx);
}
// This is called before any other location that requires
// sObjectClass, so compute it here. We assume that nobody has had a
// chance to monkey around with proto's prototype chain before this.
if (!sObjectClass) {
FindObjectClass(cx, proto);
NS_ASSERTION(sObjectClass && !strcmp(sObjectClass->name, "Object"),
"Incorrect object class!");
}
#ifdef DEBUG
JS::Rooted<JSObject*> proto2(cx);
JS_GetPrototype(cx, proto, &proto2);
NS_ASSERTION(proto2 && JS_GetClass(proto2) == sObjectClass,
"Hmm, somebody did something evil?");
#endif
#ifdef DEBUG
if (mData->mHasClassInterface && mData->mProtoChainInterface &&
mData->mProtoChainInterface != &NS_GET_IID(nsISupports)) {
nsCOMPtr<nsIInterfaceInfoManager>
iim(do_GetService(NS_INTERFACEINFOMANAGER_SERVICE_CONTRACTID));
if (iim) {
nsCOMPtr<nsIInterfaceInfo> if_info;
iim->GetInfoForIID(mData->mProtoChainInterface,
getter_AddRefs(if_info));
if (if_info) {
nsXPIDLCString name;
if_info->GetName(getter_Copies(name));
NS_ASSERTION(nsCRT::strcmp(CutPrefix(name), mData->mName) == 0,
"Class name and proto chain interface name mismatch!");
}
}
}
#endif
// Make prototype delegation work correctly. Consider if a site sets
// HTMLElement.prototype.foopy = function () { ... } Now, calling
// document.body.foopy() needs to ensure that looking up foopy on
// document.body's prototype will find the right function.
JS::Rooted<JSObject*> global(cx, ::JS_GetGlobalForObject(cx, proto));
// Only do this if the global object is a window.
// XXX Is there a better way to check this?
nsISupports *globalNative = XPConnect()->GetNativeOfWrapper(cx, global);
nsCOMPtr<nsPIDOMWindow> piwin = do_QueryInterface(globalNative);
if (!piwin) {
return NS_OK;
}
nsGlobalWindow *win = nsGlobalWindow::FromSupports(globalNative);
if (win->IsClosedOrClosing()) {
return NS_OK;
}
// If the window is in a different compartment than the global object, then
// it's likely that global is a sandbox object whose prototype is a window.
// Don't do anything in this case.
if (win->FastGetGlobalJSObject() &&
js::GetObjectCompartment(global) != js::GetObjectCompartment(win->FastGetGlobalJSObject())) {
return NS_OK;
}
if (win->IsOuterWindow()) {
// XXXjst: Do security checks here when we remove the security
// checks on the inner window.
win = win->GetCurrentInnerWindowInternal();
if (!win || !(global = win->GetGlobalJSObject()) ||
win->IsClosedOrClosing()) {
return NS_OK;
}
}
// Don't overwrite a property set by content.
bool contentDefinedProperty;
if (!::JS_AlreadyHasOwnUCProperty(cx, global, reinterpret_cast<const jschar*>(mData->mNameUTF16),
NS_strlen(mData->mNameUTF16),
&contentDefinedProperty)) {
return NS_ERROR_FAILURE;
}
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
NS_ENSURE_TRUE(nameSpaceManager, NS_OK);
JS::Rooted<JSPropertyDescriptor> desc(cx);
nsresult rv = ResolvePrototype(sXPConnect, win, cx, global, mData->mNameUTF16,
mData, nullptr, nameSpaceManager, proto,
&desc);
NS_ENSURE_SUCCESS(rv, rv);
if (!contentDefinedProperty && desc.object() && !desc.value().isUndefined() &&
!JS_DefineUCProperty(cx, global, mData->mNameUTF16,
NS_strlen(mData->mNameUTF16),
desc.value(), desc.attributes(),
desc.getter(), desc.setter())) {
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
// static
nsIClassInfo *
NS_GetDOMClassInfoInstance(nsDOMClassInfoID aID)
{
if (aID >= eDOMClassInfoIDCount) {
NS_ERROR("Bad ID!");
return nullptr;
}
if (!nsDOMClassInfo::sIsInitialized) {
nsresult rv = nsDOMClassInfo::Init();
NS_ENSURE_SUCCESS(rv, nullptr);
}
if (!sClassInfoData[aID].mCachedClassInfo) {
nsDOMClassInfoData& data = sClassInfoData[aID];
data.mCachedClassInfo = data.u.mConstructorFptr(&data);
NS_ENSURE_TRUE(data.mCachedClassInfo, nullptr);
NS_ADDREF(data.mCachedClassInfo);
}
NS_ASSERTION(!IS_EXTERNAL(sClassInfoData[aID].mCachedClassInfo),
"This is bad, internal class marked as external!");
return sClassInfoData[aID].mCachedClassInfo;
}
// static
nsIClassInfo *
nsDOMClassInfo::GetClassInfoInstance(nsDOMClassInfoData* aData)
{
NS_ASSERTION(IS_EXTERNAL(aData->mCachedClassInfo)
|| !aData->mCachedClassInfo,
"This is bad, external class marked as internal!");
if (!aData->mCachedClassInfo) {
if (aData->u.mExternalConstructorFptr) {
aData->mCachedClassInfo =
aData->u.mExternalConstructorFptr(aData->mName);
} else {
aData->mCachedClassInfo = nsDOMGenericSH::doCreate(aData);
}
NS_ENSURE_TRUE(aData->mCachedClassInfo, nullptr);
NS_ADDREF(aData->mCachedClassInfo);
aData->mCachedClassInfo = MARK_EXTERNAL(aData->mCachedClassInfo);
}
return GET_CLEAN_CI_PTR(aData->mCachedClassInfo);
}
// static
void
nsDOMClassInfo::ShutDown()
{
if (sClassInfoData[0].u.mConstructorFptr) {
uint32_t i;
for (i = 0; i < eDOMClassInfoIDCount; i++) {
NS_IF_RELEASE(sClassInfoData[i].mCachedClassInfo);
}
}
sLocation_id = JSID_VOID;
sConstructor_id = JSID_VOID;
sTop_id = JSID_VOID;
sDocument_id = JSID_VOID;
sWrappedJSObject_id = JSID_VOID;
NS_IF_RELEASE(sXPConnect);
NS_IF_RELEASE(sSecMan);
sIsInitialized = false;
}
// Window helper
NS_IMETHODIMP
nsWindowSH::PreCreate(nsISupports *nativeObj, JSContext *cx,
JSObject *globalObj, JSObject **parentObj)
{
// Normally ::PreCreate() is used to give XPConnect the parent
// object for the object that's being wrapped, this parent object is
// set as the parent of the wrapper and it's also used to find the
// right scope for the object being wrapped. Now, in the case of the
// global object the wrapper shouldn't have a parent but we supply
// one here anyway (the global object itself) and this will be used
// by XPConnect only to find the right scope, once the scope is
// found XPConnect will find the existing wrapper (which always
// exists since it's created on window construction), since an
// existing wrapper is found the parent we supply here is ignored
// after the wrapper is found.
nsCOMPtr<nsIScriptGlobalObject> sgo(do_QueryInterface(nativeObj));
NS_ASSERTION(sgo, "nativeObj not a global object!");
nsGlobalWindow *win = nsGlobalWindow::FromSupports(nativeObj);
NS_ASSERTION(win->IsInnerWindow(), "Should be inner window.");
// We sometimes get a disconnected window during file api test. :-(
if (!win->GetOuterWindowInternal())
return NS_ERROR_FAILURE;
// If we're bootstrapping, we don't have a JS object yet.
if (win->GetOuterWindowInternal()->IsCreatingInnerWindow())
return NS_OK;
return SetParentToWindow(win, parentObj);
}
NS_IMETHODIMP
nsWindowSH::PostCreatePrototype(JSContext* aCx, JSObject* aProto)
{
JS::Rooted<JSObject*> proto(aCx, aProto);
nsresult rv = nsDOMClassInfo::PostCreatePrototype(aCx, proto);
NS_ENSURE_SUCCESS(rv, rv);
// We should probably move this into the CreateInterfaceObjects for Window
// once it is on WebIDL bindings.
WindowNamedPropertiesHandler::Install(aCx, proto);
return NS_OK;
}
NS_IMETHODIMP
nsWindowSH::PostCreate(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *obj)
{
JS::Rooted<JSObject*> window(cx, obj);
#ifdef DEBUG
nsCOMPtr<nsIScriptGlobalObject> sgo(do_QueryWrappedNative(wrapper));
NS_ASSERTION(sgo && sgo->GetGlobalJSObject() == obj,
"Multiple wrappers created for global object!");
#endif
const NativeProperties* windowProperties =
WindowBinding::sNativePropertyHooks->mNativeProperties.regular;
const NativeProperties* eventTargetProperties =
EventTargetBinding::sNativePropertyHooks->mNativeProperties.regular;
if (!DefineWebIDLBindingUnforgeablePropertiesOnXPCObject(cx, window, windowProperties) ||
!DefineWebIDLBindingUnforgeablePropertiesOnXPCObject(cx, window, eventTargetProperties)) {
return NS_ERROR_FAILURE;
}
if (!GlobalPropertiesAreOwn()) {
return NS_OK;
}
return DefineWebIDLBindingPropertiesOnXPCObject(cx, window, windowProperties) &&
DefineWebIDLBindingPropertiesOnXPCObject(cx, window, eventTargetProperties) ?
NS_OK : NS_ERROR_FAILURE;
}
struct ResolveGlobalNameClosure
{
JSContext* cx;
JS::Handle<JSObject*> obj;
bool* retval;
};
static PLDHashOperator
ResolveGlobalName(const nsAString& aName,
const nsGlobalNameStruct& aNameStruct,
void* aClosure)
{
ResolveGlobalNameClosure* closure =
static_cast<ResolveGlobalNameClosure*>(aClosure);
JS::Rooted<JS::Value> dummy(closure->cx);
bool ok = JS_LookupUCProperty(closure->cx, closure->obj,
aName.BeginReading(), aName.Length(),
&dummy);
if (!ok) {
*closure->retval = false;
return PL_DHASH_STOP;
}
return PL_DHASH_NEXT;
}
NS_IMETHODIMP
nsWindowSH::Enumerate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *aObj, bool *_retval)
{
JS::Rooted<JSObject*> obj(cx, aObj);
if (!xpc::WrapperFactory::IsXrayWrapper(obj)) {
*_retval = JS_EnumerateStandardClasses(cx, obj);
if (!*_retval) {
return NS_OK;
}
// Now resolve everything from the namespace manager
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
if (!nameSpaceManager) {
NS_ERROR("Can't get namespace manager.");
return NS_ERROR_UNEXPECTED;
}
ResolveGlobalNameClosure closure = { cx, obj, _retval };
nameSpaceManager->EnumerateGlobalNames(ResolveGlobalName, &closure);
}
return NS_OK;
}
static nsDOMConstructorFunc
FindConstructorFunc(const nsDOMClassInfoData *aDOMClassInfoData)
{
for (uint32_t i = 0; i < ArrayLength(kConstructorFuncMap); ++i) {
if (&sClassInfoData[kConstructorFuncMap[i].mDOMClassInfoID] ==
aDOMClassInfoData) {
return kConstructorFuncMap[i].mConstructorFunc;
}
}
return nullptr;
}
static nsresult
BaseStubConstructor(nsIWeakReference* aWeakOwner,
const nsGlobalNameStruct *name_struct, JSContext *cx,
JS::Handle<JSObject*> obj, const JS::CallArgs &args)
{
MOZ_ASSERT(obj);
nsresult rv;
nsCOMPtr<nsISupports> native;
if (name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
const nsDOMClassInfoData* ci_data =
&sClassInfoData[name_struct->mDOMClassInfoID];
nsDOMConstructorFunc func = FindConstructorFunc(ci_data);
if (func) {
rv = func(getter_AddRefs(native));
} else {
rv = NS_ERROR_NOT_AVAILABLE;
}
} else if (name_struct->mType == nsGlobalNameStruct::eTypeExternalConstructor) {
native = do_CreateInstance(name_struct->mCID, &rv);
} else if (name_struct->mType == nsGlobalNameStruct::eTypeExternalConstructorAlias) {
native = do_CreateInstance(name_struct->mAlias->mCID, &rv);
} else {
native = do_CreateInstance(*name_struct->mData->mConstructorCID, &rv);
}
if (NS_FAILED(rv)) {
NS_ERROR("Failed to create the object");
return rv;
}
nsCOMPtr<nsIJSNativeInitializer> initializer(do_QueryInterface(native));
nsCOMPtr<nsIDOMGlobalObjectConstructor> constructor(do_QueryInterface(native));
if (initializer || constructor) {
// Initialize object using the current inner window, but only if
// the caller can access it.
nsCOMPtr<nsPIDOMWindow> owner = do_QueryReferent(aWeakOwner);
nsPIDOMWindow* outerWindow = owner ? owner->GetOuterWindow() : nullptr;
nsPIDOMWindow* currentInner =
outerWindow ? outerWindow->GetCurrentInnerWindow() : nullptr;
if (!currentInner ||
(owner != currentInner &&
!nsContentUtils::CanCallerAccess(currentInner))) {
return NS_ERROR_DOM_SECURITY_ERR;
}
if (initializer) {
rv = initializer->Initialize(currentInner, cx, obj, args);
if (NS_FAILED(rv)) {
return rv;
}
} else {
nsCOMPtr<nsIXPConnectWrappedJS> wrappedJS = do_QueryInterface(native);
JS::Rooted<JSObject*> thisObject(cx, wrappedJS->GetJSObject());
if (!thisObject) {
return NS_ERROR_UNEXPECTED;
}
nsCxPusher pusher;
pusher.Push(cx);
JSAutoCompartment ac(cx, thisObject);
JS::Rooted<JS::Value> funval(cx);
if (!JS_GetProperty(cx, thisObject, "constructor", &funval) ||
!funval.isObject()) {
return NS_ERROR_UNEXPECTED;
}
// Check if the object is even callable.
NS_ENSURE_STATE(JS_ObjectIsCallable(cx, &funval.toObject()));
{
// wrap parameters in the target compartment
// we also pass in the calling window as the first argument
unsigned argc = args.length() + 1;
JS::AutoValueVector argv(cx);
if (!argv.resize(argc)) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIDOMWindow> currentWin(do_GetInterface(currentInner));
rv = WrapNative(cx, currentWin, &NS_GET_IID(nsIDOMWindow),
true, argv[0]);
for (size_t i = 1; i < argc; ++i) {
argv[i].set(args[i - 1]);
if (!JS_WrapValue(cx, argv[i]))
return NS_ERROR_FAILURE;
}
JS::Rooted<JS::Value> frval(cx);
bool ret = JS_CallFunctionValue(cx, thisObject, funval, argv, &frval);
if (!ret) {
return NS_ERROR_FAILURE;
}
}
}
}
js::AssertSameCompartment(cx, obj);
return WrapNative(cx, native, true, args.rval());
}
static nsresult
DefineInterfaceConstants(JSContext *cx, JS::Handle<JSObject*> obj, const nsIID *aIID)
{
nsCOMPtr<nsIInterfaceInfoManager>
iim(do_GetService(NS_INTERFACEINFOMANAGER_SERVICE_CONTRACTID));
NS_ENSURE_TRUE(iim, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIInterfaceInfo> if_info;
nsresult rv = iim->GetInfoForIID(aIID, getter_AddRefs(if_info));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && if_info, rv);
uint16_t constant_count;
if_info->GetConstantCount(&constant_count);
if (!constant_count) {
return NS_OK;
}
nsCOMPtr<nsIInterfaceInfo> parent_if_info;
rv = if_info->GetParent(getter_AddRefs(parent_if_info));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && parent_if_info, rv);
uint16_t parent_constant_count, i;
parent_if_info->GetConstantCount(&parent_constant_count);
JS::Rooted<JS::Value> v(cx);
for (i = parent_constant_count; i < constant_count; i++) {
nsXPIDLCString name;
rv = if_info->GetConstant(i, &v, getter_Copies(name));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv), rv);
if (!::JS_DefineProperty(cx, obj, name, v,
JSPROP_ENUMERATE | JSPROP_READONLY |
JSPROP_PERMANENT,
JS_PropertyStub, JS_StrictPropertyStub)) {
return NS_ERROR_UNEXPECTED;
}
}
return NS_OK;
}
class nsDOMConstructor MOZ_FINAL : public nsIDOMDOMConstructor
{
protected:
nsDOMConstructor(const char16_t* aName,
bool aIsConstructable,
nsPIDOMWindow* aOwner)
: mClassName(aName),
mConstructable(aIsConstructable),
mWeakOwner(do_GetWeakReference(aOwner))
{
}
public:
static nsresult Create(const char16_t* aName,
const nsDOMClassInfoData* aData,
const nsGlobalNameStruct* aNameStruct,
nsPIDOMWindow* aOwner,
nsDOMConstructor** aResult);
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMDOMCONSTRUCTOR
nsresult PreCreate(JSContext *cx, JSObject *globalObj, JSObject **parentObj);
nsresult Construct(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JS::Handle<JSObject*> obj, const JS::CallArgs &args,
bool *_retval);
nsresult HasInstance(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JS::Handle<JSObject*> obj, const jsval &val, bool *bp,
bool *_retval);
nsresult ResolveInterfaceConstants(JSContext *cx, JS::Handle<JSObject*> obj);
private:
const nsGlobalNameStruct *GetNameStruct()
{
if (!mClassName) {
NS_ERROR("Can't get name");
return nullptr;
}
const nsGlobalNameStruct *nameStruct;
#ifdef DEBUG
nsresult rv =
#endif
GetNameStruct(nsDependentString(mClassName), &nameStruct);
NS_ASSERTION(NS_FAILED(rv) || nameStruct, "Name isn't in hash.");
return nameStruct;
}
static nsresult GetNameStruct(const nsAString& aName,
const nsGlobalNameStruct **aNameStruct)
{
*aNameStruct = nullptr;
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
if (!nameSpaceManager) {
NS_ERROR("Can't get namespace manager.");
return NS_ERROR_UNEXPECTED;
}
*aNameStruct = nameSpaceManager->LookupName(aName);
// Return NS_OK here, aName just isn't a DOM class but nothing failed.
return NS_OK;
}
static bool IsConstructable(const nsDOMClassInfoData *aData)
{
if (IS_EXTERNAL(aData->mCachedClassInfo)) {
const nsExternalDOMClassInfoData* data =
static_cast<const nsExternalDOMClassInfoData*>(aData);
return data->mConstructorCID != nullptr;
}
return FindConstructorFunc(aData);
}
static bool IsConstructable(const nsGlobalNameStruct *aNameStruct)
{
return
(aNameStruct->mType == nsGlobalNameStruct::eTypeClassConstructor &&
IsConstructable(&sClassInfoData[aNameStruct->mDOMClassInfoID])) ||
(aNameStruct->mType == nsGlobalNameStruct::eTypeExternalClassInfo &&
IsConstructable(aNameStruct->mData)) ||
aNameStruct->mType == nsGlobalNameStruct::eTypeExternalConstructor ||
aNameStruct->mType == nsGlobalNameStruct::eTypeExternalConstructorAlias;
}
const char16_t* mClassName;
const bool mConstructable;
nsWeakPtr mWeakOwner;
};
//static
nsresult
nsDOMConstructor::Create(const char16_t* aName,
const nsDOMClassInfoData* aData,
const nsGlobalNameStruct* aNameStruct,
nsPIDOMWindow* aOwner,
nsDOMConstructor** aResult)
{
*aResult = nullptr;
// Prevent creating a constructor if aOwner is inner window which doesn't have
// an outer window. If the outer window doesn't have an inner window or the
// caller can't access the outer window's current inner window then try to use
// the owner (so long as it is, in fact, an inner window). If that doesn't
// work then prevent creation also.
nsPIDOMWindow* outerWindow = aOwner->GetOuterWindow();
nsPIDOMWindow* currentInner =
outerWindow ? outerWindow->GetCurrentInnerWindow() : aOwner;
if (!currentInner ||
(aOwner != currentInner &&
!nsContentUtils::CanCallerAccess(currentInner) &&
!(currentInner = aOwner)->IsInnerWindow())) {
return NS_ERROR_DOM_SECURITY_ERR;
}
bool constructable = aNameStruct ?
IsConstructable(aNameStruct) :
IsConstructable(aData);
*aResult = new nsDOMConstructor(aName, constructable, currentInner);
NS_ENSURE_TRUE(*aResult, NS_ERROR_OUT_OF_MEMORY);
NS_ADDREF(*aResult);
return NS_OK;
}
NS_IMPL_ADDREF(nsDOMConstructor)
NS_IMPL_RELEASE(nsDOMConstructor)
NS_INTERFACE_MAP_BEGIN(nsDOMConstructor)
NS_INTERFACE_MAP_ENTRY(nsIDOMDOMConstructor)
NS_INTERFACE_MAP_ENTRY(nsISupports)
if (aIID.Equals(NS_GET_IID(nsIClassInfo))) {
#ifdef DEBUG
{
const nsGlobalNameStruct *name_struct = GetNameStruct();
NS_ASSERTION(!name_struct ||
mConstructable == IsConstructable(name_struct),
"Can't change constructability dynamically!");
}
#endif
foundInterface =
NS_GetDOMClassInfoInstance(mConstructable ?
eDOMClassInfo_DOMConstructor_id :
eDOMClassInfo_DOMPrototype_id);
if (!foundInterface) {
*aInstancePtr = nullptr;
return NS_ERROR_OUT_OF_MEMORY;
}
} else
NS_INTERFACE_MAP_END
nsresult
nsDOMConstructor::PreCreate(JSContext *cx, JSObject *globalObj, JSObject **parentObj)
{
nsCOMPtr<nsPIDOMWindow> owner(do_QueryReferent(mWeakOwner));
if (!owner) {
// Can't do anything.
return NS_OK;
}
nsGlobalWindow *win = static_cast<nsGlobalWindow *>(owner.get());
return SetParentToWindow(win, parentObj);
}
nsresult
nsDOMConstructor::Construct(nsIXPConnectWrappedNative *wrapper, JSContext * cx,
JS::Handle<JSObject*> obj, const JS::CallArgs &args,
bool *_retval)
{
MOZ_ASSERT(obj);
const nsGlobalNameStruct *name_struct = GetNameStruct();
NS_ENSURE_TRUE(name_struct, NS_ERROR_FAILURE);
if (!IsConstructable(name_struct)) {
// ignore return value, we return false anyway
return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
}
return BaseStubConstructor(mWeakOwner, name_struct, cx, obj, args);
}
nsresult
nsDOMConstructor::HasInstance(nsIXPConnectWrappedNative *wrapper,
JSContext * cx, JS::Handle<JSObject*> obj,
const jsval &v, bool *bp, bool *_retval)
{
// No need to look these up in the hash.
*bp = false;
if (v.isPrimitive()) {
return NS_OK;
}
JS::Rooted<JSObject*> dom_obj(cx, v.toObjectOrNull());
NS_ASSERTION(dom_obj, "nsDOMConstructor::HasInstance couldn't get object");
// This might not be the right object, if there are wrappers. Unwrap if we can.
JSObject *wrapped_obj = js::CheckedUnwrap(dom_obj, /* stopAtOuter = */ false);
if (wrapped_obj)
dom_obj = wrapped_obj;
const JSClass *dom_class = JS_GetClass(dom_obj);
if (!dom_class) {
NS_ERROR("nsDOMConstructor::HasInstance can't get class.");
return NS_ERROR_UNEXPECTED;
}
const nsGlobalNameStruct *name_struct;
nsresult rv = GetNameStruct(NS_ConvertASCIItoUTF16(dom_class->name), &name_struct);
if (NS_FAILED(rv)) {
return rv;
}
if (!name_struct) {
// This isn't a normal DOM object, see if this constructor lives on its
// prototype chain.
JS::Rooted<JS::Value> val(cx);
if (!JS_GetProperty(cx, obj, "prototype", &val)) {
return NS_ERROR_UNEXPECTED;
}
if (val.isPrimitive()) {
return NS_OK;
}
JS::Rooted<JSObject*> dot_prototype(cx, val.toObjectOrNull());
JS::Rooted<JSObject*> proto(cx, dom_obj);
for (;;) {
if (!JS_GetPrototype(cx, proto, &proto)) {
return NS_ERROR_UNEXPECTED;
}
if (!proto) {
break;
}
if (proto == dot_prototype) {
*bp = true;
break;
}
}
return NS_OK;
}
if (name_struct->mType != nsGlobalNameStruct::eTypeClassConstructor &&
name_struct->mType != nsGlobalNameStruct::eTypeExternalClassInfo &&
name_struct->mType != nsGlobalNameStruct::eTypeExternalConstructorAlias) {
// Doesn't have DOM interfaces.
return NS_OK;
}
const nsGlobalNameStruct *class_name_struct = GetNameStruct();
NS_ENSURE_TRUE(class_name_struct, NS_ERROR_FAILURE);
if (name_struct == class_name_struct) {
*bp = true;
return NS_OK;
}
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
NS_ASSERTION(nameSpaceManager, "Can't get namespace manager?");
const nsIID *class_iid;
if (class_name_struct->mType == nsGlobalNameStruct::eTypeInterface ||
class_name_struct->mType == nsGlobalNameStruct::eTypeClassProto) {
class_iid = &class_name_struct->mIID;
} else if (class_name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
class_iid =
sClassInfoData[class_name_struct->mDOMClassInfoID].mProtoChainInterface;
} else if (class_name_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {
class_iid = class_name_struct->mData->mProtoChainInterface;
} else if (class_name_struct->mType == nsGlobalNameStruct::eTypeExternalConstructorAlias) {
const nsGlobalNameStruct* alias_struct =
nameSpaceManager->GetConstructorProto(class_name_struct);
if (!alias_struct) {
NS_ERROR("Couldn't get constructor prototype.");
return NS_ERROR_UNEXPECTED;
}
if (alias_struct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
class_iid =
sClassInfoData[alias_struct->mDOMClassInfoID].mProtoChainInterface;
} else if (alias_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {
class_iid = alias_struct->mData->mProtoChainInterface;
} else {
NS_ERROR("Expected eTypeClassConstructor or eTypeExternalClassInfo.");
return NS_ERROR_UNEXPECTED;
}
} else {
*bp = false;
return NS_OK;
}
if (name_struct->mType == nsGlobalNameStruct::eTypeExternalConstructorAlias) {
name_struct = nameSpaceManager->GetConstructorProto(name_struct);
if (!name_struct) {
NS_ERROR("Couldn't get constructor prototype.");
return NS_ERROR_UNEXPECTED;
}
}
NS_ASSERTION(name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor ||
name_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo,
"The constructor was set up with a struct of the wrong type.");
const nsDOMClassInfoData *ci_data = nullptr;
if (name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor &&
name_struct->mDOMClassInfoID >= 0) {
ci_data = &sClassInfoData[name_struct->mDOMClassInfoID];
} else if (name_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {
ci_data = name_struct->mData;
}
nsCOMPtr<nsIInterfaceInfoManager>
iim(do_GetService(NS_INTERFACEINFOMANAGER_SERVICE_CONTRACTID));
if (!iim) {
NS_ERROR("nsDOMConstructor::HasInstance can't get interface info mgr.");
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsIInterfaceInfo> if_info;
uint32_t count = 0;
const nsIID* class_interface;
while ((class_interface = ci_data->mInterfaces[count++])) {
if (class_iid->Equals(*class_interface)) {
*bp = true;
return NS_OK;
}
iim->GetInfoForIID(class_interface, getter_AddRefs(if_info));
if (!if_info) {
NS_ERROR("nsDOMConstructor::HasInstance can't get interface info.");
return NS_ERROR_UNEXPECTED;
}
if_info->HasAncestor(class_iid, bp);
if (*bp) {
return NS_OK;
}
}
return NS_OK;
}
nsresult
nsDOMConstructor::ResolveInterfaceConstants(JSContext *cx, JS::Handle<JSObject*> obj)
{
const nsGlobalNameStruct *class_name_struct = GetNameStruct();
if (!class_name_struct)
return NS_ERROR_UNEXPECTED;
const nsIID *class_iid;
if (class_name_struct->mType == nsGlobalNameStruct::eTypeInterface ||
class_name_struct->mType == nsGlobalNameStruct::eTypeClassProto) {
class_iid = &class_name_struct->mIID;
} else if (class_name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
class_iid =
sClassInfoData[class_name_struct->mDOMClassInfoID].mProtoChainInterface;
} else if (class_name_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {
class_iid = class_name_struct->mData->mProtoChainInterface;
} else {
return NS_OK;
}
nsresult rv = DefineInterfaceConstants(cx, obj, class_iid);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsDOMConstructor::ToString(nsAString &aResult)
{
aResult.AssignLiteral("[object ");
aResult.Append(mClassName);
aResult.Append(char16_t(']'));
return NS_OK;
}
static nsresult
GetXPCProto(nsIXPConnect *aXPConnect, JSContext *cx, nsGlobalWindow *aWin,
const nsGlobalNameStruct *aNameStruct,
nsIXPConnectJSObjectHolder **aProto)
{
NS_ASSERTION(aNameStruct->mType ==
nsGlobalNameStruct::eTypeClassConstructor ||
aNameStruct->mType == nsGlobalNameStruct::eTypeExternalClassInfo,
"Wrong type!");
nsCOMPtr<nsIClassInfo> ci;
if (aNameStruct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
int32_t id = aNameStruct->mDOMClassInfoID;
NS_ABORT_IF_FALSE(id >= 0, "Negative DOM classinfo?!?");
nsDOMClassInfoID ci_id = (nsDOMClassInfoID)id;
ci = NS_GetDOMClassInfoInstance(ci_id);
// In most cases we want to find the wrapped native prototype in
// aWin's scope and use that prototype for
// ClassName.prototype. But in the case where we're setting up
// "Window.prototype" or "ChromeWindow.prototype" we want to do
// the look up in aWin's outer window's scope since the inner
// window's wrapped native prototype comes from the outer
// window's scope.
if (ci_id == eDOMClassInfo_Window_id ||
ci_id == eDOMClassInfo_ModalContentWindow_id ||
ci_id == eDOMClassInfo_ChromeWindow_id) {
nsGlobalWindow *scopeWindow = aWin->GetOuterWindowInternal();
if (scopeWindow) {
aWin = scopeWindow;
}
}
}
else {
ci = nsDOMClassInfo::GetClassInfoInstance(aNameStruct->mData);
}
NS_ENSURE_TRUE(ci, NS_ERROR_UNEXPECTED);
nsresult rv =
aXPConnect->GetWrappedNativePrototype(cx, aWin->GetGlobalJSObject(), ci,
aProto);
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JSObject*> proto_obj(cx, (*aProto)->GetJSObject());
if (!JS_WrapObject(cx, &proto_obj)) {
return NS_ERROR_FAILURE;
}
NS_IF_RELEASE(*aProto);
return aXPConnect->HoldObject(cx, proto_obj, aProto);
}
// Either ci_data must be non-null or name_struct must be non-null and of type
// eTypeClassProto.
static nsresult
ResolvePrototype(nsIXPConnect *aXPConnect, nsGlobalWindow *aWin, JSContext *cx,
JS::Handle<JSObject*> obj, const char16_t *name,
const nsDOMClassInfoData *ci_data,
const nsGlobalNameStruct *name_struct,
nsScriptNameSpaceManager *nameSpaceManager,
JSObject* aDot_prototype,
JS::MutableHandle<JSPropertyDescriptor> ctorDesc)
{
JS::Rooted<JSObject*> dot_prototype(cx, aDot_prototype);
NS_ASSERTION(ci_data ||
(name_struct &&
name_struct->mType == nsGlobalNameStruct::eTypeClassProto),
"Wrong type or missing ci_data!");
nsRefPtr<nsDOMConstructor> constructor;
nsresult rv = nsDOMConstructor::Create(name, ci_data, name_struct, aWin,
getter_AddRefs(constructor));
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JS::Value> v(cx);
js::AssertSameCompartment(cx, obj);
rv = WrapNative(cx, constructor, &NS_GET_IID(nsIDOMDOMConstructor),
false, &v);
NS_ENSURE_SUCCESS(rv, rv);
FillPropertyDescriptor(ctorDesc, obj, 0, v);
// And make sure we wrap the value into the right compartment. Note that we
// do this with ctorDesc.value(), not with v, because we need v to be in the
// right compartment (that of the reflector of |constructor|) below.
if (!JS_WrapValue(cx, ctorDesc.value())) {
return NS_ERROR_UNEXPECTED;
}
JS::Rooted<JSObject*> class_obj(cx, &v.toObject());
const nsIID *primary_iid = &NS_GET_IID(nsISupports);
if (!ci_data) {
primary_iid = &name_struct->mIID;
}
else if (ci_data->mProtoChainInterface) {
primary_iid = ci_data->mProtoChainInterface;
}
nsCOMPtr<nsIInterfaceInfo> if_info;
nsCOMPtr<nsIInterfaceInfo> parent;
const char *class_parent_name = nullptr;
if (!primary_iid->Equals(NS_GET_IID(nsISupports))) {
JSAutoCompartment ac(cx, class_obj);
rv = DefineInterfaceConstants(cx, class_obj, primary_iid);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIInterfaceInfoManager>
iim(do_GetService(NS_INTERFACEINFOMANAGER_SERVICE_CONTRACTID));
NS_ENSURE_TRUE(iim, NS_ERROR_NOT_AVAILABLE);
iim->GetInfoForIID(primary_iid, getter_AddRefs(if_info));
NS_ENSURE_TRUE(if_info, NS_ERROR_UNEXPECTED);
const nsIID *iid = nullptr;
if (ci_data && !ci_data->mHasClassInterface) {
if_info->GetIIDShared(&iid);
} else {
if_info->GetParent(getter_AddRefs(parent));
NS_ENSURE_TRUE(parent, NS_ERROR_UNEXPECTED);
parent->GetIIDShared(&iid);
}
if (iid) {
if (!iid->Equals(NS_GET_IID(nsISupports))) {
if (ci_data && !ci_data->mHasClassInterface) {
// If the class doesn't have a class interface the primary
// interface is the interface that should be
// constructor.prototype.__proto__.
if_info->GetNameShared(&class_parent_name);
} else {
// If the class does have a class interface (or there's no
// real class for this name) then the parent of the
// primary interface is what we want on
// constructor.prototype.__proto__.
NS_ASSERTION(parent, "Whoa, this is bad, null parent here!");
parent->GetNameShared(&class_parent_name);
}
}
}
}
{
JS::Rooted<JSObject*> winobj(cx, aWin->FastGetGlobalJSObject());
JS::Rooted<JSObject*> proto(cx);
if (class_parent_name) {
JSAutoCompartment ac(cx, winobj);
JS::Rooted<JS::Value> val(cx);
if (!JS_LookupProperty(cx, winobj, CutPrefix(class_parent_name), &val)) {
return NS_ERROR_UNEXPECTED;
}
if (val.isObject()) {
JS::Rooted<JSObject*> obj(cx, &val.toObject());
if (!JS_LookupProperty(cx, obj, "prototype", &val)) {
return NS_ERROR_UNEXPECTED;
}
if (val.isObject()) {
proto = &val.toObject();
}
}
}
if (dot_prototype) {
JSAutoCompartment ac(cx, dot_prototype);
JS::Rooted<JSObject*> xpc_proto_proto(cx);
if (!::JS_GetPrototype(cx, dot_prototype, &xpc_proto_proto)) {
return NS_ERROR_UNEXPECTED;
}
if (proto &&
(!xpc_proto_proto ||
JS_GetClass(xpc_proto_proto) == sObjectClass)) {
if (!JS_WrapObject(cx, &proto) ||
!JS_SetPrototype(cx, dot_prototype, proto)) {
return NS_ERROR_UNEXPECTED;
}
}
} else {
JSAutoCompartment ac(cx, winobj);
if (!proto) {
proto = JS_GetObjectPrototype(cx, winobj);
}
dot_prototype = ::JS_NewObjectWithUniqueType(cx,
&sDOMConstructorProtoClass,
proto,
winobj);
NS_ENSURE_TRUE(dot_prototype, NS_ERROR_OUT_OF_MEMORY);
}
}
v = OBJECT_TO_JSVAL(dot_prototype);
JSAutoCompartment ac(cx, class_obj);
// Per ECMA, the prototype property is {DontEnum, DontDelete, ReadOnly}
if (!JS_WrapValue(cx, &v) ||
!JS_DefineProperty(cx, class_obj, "prototype", v,
JSPROP_PERMANENT | JSPROP_READONLY,
JS_PropertyStub, JS_StrictPropertyStub)) {
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
static bool
OldBindingConstructorEnabled(const nsGlobalNameStruct *aStruct,
nsGlobalWindow *aWin, JSContext *cx)
{
MOZ_ASSERT(aStruct->mType == nsGlobalNameStruct::eTypeProperty ||
aStruct->mType == nsGlobalNameStruct::eTypeClassConstructor ||
aStruct->mType == nsGlobalNameStruct::eTypeExternalClassInfo);
// Don't expose chrome only constructors to content windows.
if (aStruct->mChromeOnly) {
bool expose;
if (aStruct->mAllowXBL) {
expose = IsChromeOrXBL(cx, nullptr);
} else {
expose = nsContentUtils::IsSystemPrincipal(aWin->GetPrincipal());
}
if (!expose) {
return false;
}
}
// Don't expose CSSFontFeatureValuesRule unless the pref is enabled
if (aStruct->mDOMClassInfoID == eDOMClassInfo_CSSFontFeatureValuesRule_id) {
return nsCSSFontFeatureValuesRule::PrefEnabled();
}
return true;
}
static nsresult
LookupComponentsShim(JSContext *cx, JS::Handle<JSObject*> global,
nsPIDOMWindow *win,
JS::MutableHandle<JSPropertyDescriptor> desc);
bool
nsWindowSH::NameStructEnabled(JSContext* aCx, nsGlobalWindow *aWin,
const nsAString& aName,
const nsGlobalNameStruct& aNameStruct)
{
const nsGlobalNameStruct* nameStruct = &aNameStruct;
if (nameStruct->mType == nsGlobalNameStruct::eTypeExternalClassInfoCreator) {
nsresult rv = GetExternalClassInfo(GetNameSpaceManager(), aName, nameStruct,
&nameStruct);
if (NS_FAILED(rv) || !nameStruct) {
return false;
}
}
return (nameStruct->mType != nsGlobalNameStruct::eTypeProperty &&
nameStruct->mType != nsGlobalNameStruct::eTypeClassConstructor &&
nameStruct->mType != nsGlobalNameStruct::eTypeExternalClassInfo) ||
OldBindingConstructorEnabled(nameStruct, aWin, aCx);
}
#ifdef RELEASE_BUILD
#define USE_CONTROLLERS_SHIM
#endif
#ifdef USE_CONTROLLERS_SHIM
static const JSClass ControllersShimClass = {
"XULControllers", 0,
JS_PropertyStub, JS_DeletePropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, nullptr
};
#endif
// static
nsresult
nsWindowSH::GlobalResolve(nsGlobalWindow *aWin, JSContext *cx,
JS::Handle<JSObject*> obj, JS::Handle<jsid> id,
JS::MutableHandle<JSPropertyDescriptor> desc)
{
if (id == XPCJSRuntime::Get()->GetStringID(XPCJSRuntime::IDX_COMPONENTS)) {
return LookupComponentsShim(cx, obj, aWin, desc);
}
#ifdef USE_CONTROLLERS_SHIM
if (id == XPCJSRuntime::Get()->GetStringID(XPCJSRuntime::IDX_CONTROLLERS) &&
!xpc::IsXrayWrapper(obj) &&
!nsContentUtils::IsSystemPrincipal(aWin->GetPrincipal()))
{
if (aWin->GetDoc()) {
aWin->GetDoc()->WarnOnceAbout(nsIDocument::eWindow_Controllers);
}
JS::Rooted<JSObject*> shim(cx, JS_NewObject(cx, &ControllersShimClass, JS::NullPtr(), obj));
if (NS_WARN_IF(!shim)) {
return NS_ERROR_OUT_OF_MEMORY;
}
FillPropertyDescriptor(desc, obj, JS::ObjectValue(*shim), /* readOnly = */ false);
return NS_OK;
}
#endif
nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();
NS_ENSURE_TRUE(nameSpaceManager, NS_ERROR_NOT_INITIALIZED);
nsDependentJSString name(id);
const char16_t *class_name = nullptr;
const nsGlobalNameStruct *name_struct =
nameSpaceManager->LookupName(name, &class_name);
if (!name_struct) {
return NS_OK;
}
// The class_name had better match our name
MOZ_ASSERT(name.Equals(class_name));
NS_ENSURE_TRUE(class_name, NS_ERROR_UNEXPECTED);
nsresult rv = NS_OK;
if (name_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfoCreator) {
rv = GetExternalClassInfo(nameSpaceManager, name, name_struct,
&name_struct);
if (NS_FAILED(rv) || !name_struct) {
return rv;
}
}
if (name_struct->mType == nsGlobalNameStruct::eTypeNewDOMBinding ||
name_struct->mType == nsGlobalNameStruct::eTypeInterface ||
name_struct->mType == nsGlobalNameStruct::eTypeClassProto ||
name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
// Lookup new DOM bindings.
DefineInterface getOrCreateInterfaceObject =
name_struct->mDefineDOMInterface;
if (getOrCreateInterfaceObject) {
if (name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor &&
!OldBindingConstructorEnabled(name_struct, aWin, cx)) {
return NS_OK;
}
ConstructorEnabled* checkEnabledForScope = name_struct->mConstructorEnabled;
// We do the enabled check on the current compartment of cx, but for the
// actual object we pass in the underlying object in the Xray case. That
// way the callee can decide whether to allow access based on the caller
// or the window being touched.
JS::Rooted<JSObject*> global(cx,
js::CheckedUnwrap(obj, /* stopAtOuter = */ false));
if (!global) {
return NS_ERROR_DOM_SECURITY_ERR;
}
if (checkEnabledForScope && !checkEnabledForScope(cx, global)) {
return NS_OK;
}
// The DOM constructor resolve machinery interacts with Xrays in tricky
// ways, and there are some asymmetries that are important to understand.
//
// In the regular (non-Xray) case, we only want to resolve constructors
// once (so that if they're deleted, they don't reappear). We do this by
// stashing the constructor in a slot on the global, such that we can see
// during resolve whether we've created it already. This is rather
// memory-intensive, so we don't try to maintain these semantics when
// manipulating a global over Xray (so the properties just re-resolve if
// they've been deleted).
//
// Unfortunately, there's a bit of an impedance-mismatch between the Xray
// and non-Xray machinery. The Xray machinery wants an API that returns a
// JSPropertyDescriptor, so that the resolve hook doesn't have to get
// snared up with trying to define a property on the Xray holder. At the
// same time, the DefineInterface callbacks are set up to define things
// directly on the global. And re-jiggering them to return property
// descriptors is tricky, because some DefineInterface callbacks define
// multiple things (like the Image() alias for HTMLImageElement).
//
// So the setup is as-follows:
//
// * The resolve function takes a JSPropertyDescriptor, but in the
// non-Xray case, callees may define things directly on the global, and
// set the value on the property descriptor to |undefined| to indicate
// that there's nothing more for the caller to do. We assert against
// this behavior in the Xray case.
//
// * We make sure that we do a non-Xray resolve first, so that all the
// slots are set up. In the Xray case, this means unwrapping and doing
// a non-Xray resolve before doing the Xray resolve.
//
// This all could use some grand refactoring, but for now we just limp
// along.
if (xpc::WrapperFactory::IsXrayWrapper(obj)) {
JS::Rooted<JSObject*> interfaceObject(cx);
{
JSAutoCompartment ac(cx, global);
interfaceObject = getOrCreateInterfaceObject(cx, global, id, false);
}
if (NS_WARN_IF(!interfaceObject)) {
return NS_ERROR_FAILURE;
}
if (!JS_WrapObject(cx, &interfaceObject)) {
return NS_ERROR_FAILURE;
}
FillPropertyDescriptor(desc, obj, 0, JS::ObjectValue(*interfaceObject));
} else {
JS::Rooted<JSObject*> interfaceObject(cx,
getOrCreateInterfaceObject(cx, obj, id, true));
if (NS_WARN_IF(!interfaceObject)) {
return NS_ERROR_FAILURE;
}
// We've already defined the property. We indicate this to the caller
// by filling a property descriptor with JS::UndefinedValue() as the
// value. We still have to fill in a property descriptor, though, so
// that the caller knows the property is in fact on this object. It
// doesn't matter what we pass for the "readonly" argument here.
FillPropertyDescriptor(desc, obj, JS::UndefinedValue(), false);
}
return NS_OK;
}
}
if (name_struct->mType == nsGlobalNameStruct::eTypeInterface) {
// We're resolving a name of a DOM interface for which there is no
// direct DOM class, create a constructor object...
nsRefPtr<nsDOMConstructor> constructor;
rv = nsDOMConstructor::Create(class_name,
nullptr,
name_struct,
static_cast<nsPIDOMWindow*>(aWin),
getter_AddRefs(constructor));
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JS::Value> v(cx);
js::AssertSameCompartment(cx, obj);
rv = WrapNative(cx, constructor, &NS_GET_IID(nsIDOMDOMConstructor),
false, &v);
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JSObject*> class_obj(cx, &v.toObject());
// ... and define the constants from the DOM interface on that
// constructor object.
{
JSAutoCompartment ac(cx, class_obj);
rv = DefineInterfaceConstants(cx, class_obj, &name_struct->mIID);
NS_ENSURE_SUCCESS(rv, rv);
}
if (!JS_WrapValue(cx, &v)) {
return NS_ERROR_UNEXPECTED;
}
FillPropertyDescriptor(desc, obj, 0, v);
return NS_OK;
}
if (name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor ||
name_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {
if (!OldBindingConstructorEnabled(name_struct, aWin, cx)) {
return NS_OK;
}
// Create the XPConnect prototype for our classinfo, PostCreateProto will
// set up the prototype chain. This will go ahead and define things on the
// actual window's global.
nsCOMPtr<nsIXPConnectJSObjectHolder> proto_holder;
rv = GetXPCProto(sXPConnect, cx, aWin, name_struct,
getter_AddRefs(proto_holder));
NS_ENSURE_SUCCESS(rv, rv);
bool isXray = xpc::WrapperFactory::IsXrayWrapper(obj);
MOZ_ASSERT_IF(obj != aWin->GetGlobalJSObject(), isXray);
if (!isXray) {
// GetXPCProto already defined the property for us
FillPropertyDescriptor(desc, obj, JS::UndefinedValue(), false);
return NS_OK;
}
// This is the Xray case. Look up the constructor object for this
// prototype.
JS::Rooted<JSObject*> dot_prototype(cx, proto_holder->GetJSObject());
NS_ENSURE_STATE(dot_prototype);
const nsDOMClassInfoData *ci_data;
if (name_struct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
ci_data = &sClassInfoData[name_struct->mDOMClassInfoID];
} else {
ci_data = name_struct->mData;
}
return ResolvePrototype(sXPConnect, aWin, cx, obj, class_name, ci_data,
name_struct, nameSpaceManager, dot_prototype,
desc);
}
if (name_struct->mType == nsGlobalNameStruct::eTypeClassProto) {
// We don't have a XPConnect prototype object, let ResolvePrototype create
// one.
return ResolvePrototype(sXPConnect, aWin, cx, obj, class_name, nullptr,
name_struct, nameSpaceManager, nullptr, desc);
}
if (name_struct->mType == nsGlobalNameStruct::eTypeExternalConstructorAlias) {
const nsGlobalNameStruct *alias_struct =
nameSpaceManager->GetConstructorProto(name_struct);
NS_ENSURE_TRUE(alias_struct, NS_ERROR_UNEXPECTED);
// We need to use the XPConnect prototype for the DOM class that this
// constructor is an alias for (for example for Image we need the prototype
// for HTMLImageElement).
nsCOMPtr<nsIXPConnectJSObjectHolder> proto_holder;
rv = GetXPCProto(sXPConnect, cx, aWin, alias_struct,
getter_AddRefs(proto_holder));
NS_ENSURE_SUCCESS(rv, rv);
JSObject* dot_prototype = proto_holder->GetJSObject();
NS_ENSURE_STATE(dot_prototype);
const nsDOMClassInfoData *ci_data;
if (alias_struct->mType == nsGlobalNameStruct::eTypeClassConstructor) {
ci_data = &sClassInfoData[alias_struct->mDOMClassInfoID];
} else if (alias_struct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {
ci_data = alias_struct->mData;
} else {
return NS_ERROR_UNEXPECTED;
}
return ResolvePrototype(sXPConnect, aWin, cx, obj, class_name, ci_data,
name_struct, nameSpaceManager, nullptr, desc);
}
if (name_struct->mType == nsGlobalNameStruct::eTypeExternalConstructor) {
nsRefPtr<nsDOMConstructor> constructor;
rv = nsDOMConstructor::Create(class_name, nullptr, name_struct,
static_cast<nsPIDOMWindow*>(aWin),
getter_AddRefs(constructor));
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JS::Value> val(cx);
js::AssertSameCompartment(cx, obj);
rv = WrapNative(cx, constructor, &NS_GET_IID(nsIDOMDOMConstructor),
true, &val);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(val.isObject(), "Why didn't we get a JSObject?");
FillPropertyDescriptor(desc, obj, 0, val);
return NS_OK;
}
if (name_struct->mType == nsGlobalNameStruct::eTypeProperty) {
if (!OldBindingConstructorEnabled(name_struct, aWin, cx))
return NS_OK;
// Before defining a global property, check for a named subframe of the
// same name. If it exists, we don't want to shadow it.
nsCOMPtr<nsIDOMWindow> childWin = aWin->GetChildWindow(name);
if (childWin)
return NS_OK;
nsCOMPtr<nsISupports> native(do_CreateInstance(name_struct->mCID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JS::Value> prop_val(cx, JS::UndefinedValue()); // Property value.
nsCOMPtr<nsIDOMGlobalPropertyInitializer> gpi(do_QueryInterface(native));
if (gpi) {
rv = gpi->Init(aWin, &prop_val);
NS_ENSURE_SUCCESS(rv, rv);
}
if (prop_val.isPrimitive() && !prop_val.isNull()) {
if (aWin->IsOuterWindow()) {
nsGlobalWindow *inner = aWin->GetCurrentInnerWindowInternal();
NS_ENSURE_TRUE(inner, NS_ERROR_UNEXPECTED);
}
rv = WrapNative(cx, native, true, &prop_val);
}
NS_ENSURE_SUCCESS(rv, rv);
if (!JS_WrapValue(cx, &prop_val)) {
return NS_ERROR_UNEXPECTED;
}
FillPropertyDescriptor(desc, obj, prop_val, false);
return NS_OK;
}
return rv;
}
template<class Interface>
static nsresult
LocationSetterGuts(JSContext *cx, JSObject *obj, JS::MutableHandle<JS::Value> vp)
{
// This function duplicates some of the logic in XPC_WN_HelperSetProperty
obj = js::CheckedUnwrap(obj, /* stopAtOuter = */ false);
if (!IS_WN_REFLECTOR(obj))
return NS_ERROR_XPC_BAD_CONVERT_JS;
XPCWrappedNative *wrapper = XPCWrappedNative::Get(obj);
// The error checks duplicate code in THROW_AND_RETURN_IF_BAD_WRAPPER
NS_ENSURE_TRUE(!wrapper || wrapper->IsValid(), NS_ERROR_XPC_HAS_BEEN_SHUTDOWN);
nsCOMPtr<Interface> xpcomObj = do_QueryWrappedNative(wrapper, obj);
NS_ENSURE_TRUE(xpcomObj, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIDOMLocation> location;
nsresult rv = xpcomObj->GetLocation(getter_AddRefs(location));
NS_ENSURE_SUCCESS(rv, rv);
// Grab the value we're being set to before we stomp on |vp|
JS::Rooted<JSString*> val(cx, JS::ToString(cx, vp));
NS_ENSURE_TRUE(val, NS_ERROR_UNEXPECTED);
// Make sure |val| stays alive below
JS::Anchor<JSString *> anchor(val);
// We have to wrap location into vp before null-checking location, to
// avoid assigning the wrong thing into the slot.
rv = WrapNative(cx, location, &NS_GET_IID(nsIDOMLocation), true, vp);
NS_ENSURE_SUCCESS(rv, rv);
if (!location) {
// Make this a no-op
return NS_OK;
}
nsDependentJSString depStr;
NS_ENSURE_TRUE(depStr.init(cx, val), NS_ERROR_UNEXPECTED);
return location->SetHref(depStr);
}
template<class Interface>
static bool
LocationSetter(JSContext *cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, bool strict,
JS::MutableHandle<JS::Value> vp)
{
nsresult rv = LocationSetterGuts<Interface>(cx, obj, vp);
if (NS_FAILED(rv)) {
xpc::Throw(cx, rv);
return false;
}
return true;
}
static bool
LocationSetterUnwrapper(JSContext *cx, JS::Handle<JSObject*> obj_, JS::Handle<jsid> id,
bool strict, JS::MutableHandle<JS::Value> vp)
{
JS::Rooted<JSObject*> obj(cx, obj_);
JSObject *wrapped = XPCWrapper::UnsafeUnwrapSecurityWrapper(obj);
if (wrapped) {
obj = wrapped;
}
return LocationSetter<nsIDOMWindow>(cx, obj, id, strict, vp);
}
struct InterfaceShimEntry {
const char *geckoName;
const char *domName;
};
// We add shims from Components.interfaces.nsIDOMFoo to window.Foo for each
// interface that has interface constants that sites might be getting off
// of Ci.
const InterfaceShimEntry kInterfaceShimMap[] =
{ { "nsIDOMFileReader", "FileReader" },
{ "nsIXMLHttpRequest", "XMLHttpRequest" },
{ "nsIDOMDOMException", "DOMException" },
{ "nsIDOMNode", "Node" },
{ "nsIDOMCSSPrimitiveValue", "CSSPrimitiveValue" },
{ "nsIDOMCSSRule", "CSSRule" },
{ "nsIDOMCSSValue", "CSSValue" },
{ "nsIDOMEvent", "Event" },
{ "nsIDOMNSEvent", "Event" },
{ "nsIDOMKeyEvent", "KeyEvent" },
{ "nsIDOMMouseEvent", "MouseEvent" },
{ "nsIDOMMouseScrollEvent", "MouseScrollEvent" },
{ "nsIDOMMutationEvent", "MutationEvent" },
{ "nsIDOMSimpleGestureEvent", "SimpleGestureEvent" },
{ "nsIDOMUIEvent", "UIEvent" },
{ "nsIDOMHTMLMediaElement", "HTMLMediaElement" },
{ "nsIDOMMediaError", "MediaError" },
{ "nsIDOMOfflineResourceList", "OfflineResourceList" },
{ "nsIDOMRange", "Range" },
{ "nsIDOMSVGLength", "SVGLength" },
{ "nsIDOMNodeFilter", "NodeFilter" },
{ "nsIDOMXPathResult", "XPathResult" } };
static nsresult
LookupComponentsShim(JSContext *cx, JS::Handle<JSObject*> global,
nsPIDOMWindow *win,
JS::MutableHandle<JSPropertyDescriptor> desc)
{
// Keep track of how often this happens.
Telemetry::Accumulate(Telemetry::COMPONENTS_SHIM_ACCESSED_BY_CONTENT, true);
// Warn once.
nsCOMPtr<nsIDocument> doc = win->GetExtantDoc();
if (doc) {
doc->WarnOnceAbout(nsIDocument::eComponents, /* asError = */ true);
}
// Create a fake Components object.
JS::Rooted<JSObject*> components(cx, JS_NewObject(cx, nullptr, JS::NullPtr(), global));
NS_ENSURE_TRUE(components, NS_ERROR_OUT_OF_MEMORY);
// Create a fake interfaces object.
JS::Rooted<JSObject*> interfaces(cx, JS_NewObject(cx, nullptr, JS::NullPtr(), global));
NS_ENSURE_TRUE(interfaces, NS_ERROR_OUT_OF_MEMORY);
bool ok =
JS_DefineProperty(cx, components, "interfaces", interfaces,
JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY,
JS_PropertyStub, JS_StrictPropertyStub);
NS_ENSURE_TRUE(ok, NS_ERROR_OUT_OF_MEMORY);
// Define a bunch of shims from the Ci.nsIDOMFoo to window.Foo for DOM
// interfaces with constants.
for (uint32_t i = 0; i < ArrayLength(kInterfaceShimMap); ++i) {
// Grab the names from the table.
const char *geckoName = kInterfaceShimMap[i].geckoName;
const char *domName = kInterfaceShimMap[i].domName;
// Look up the appopriate interface object on the global.
JS::Rooted<JS::Value> v(cx, JS::UndefinedValue());
ok = JS_GetProperty(cx, global, domName, &v);
NS_ENSURE_TRUE(ok, NS_ERROR_OUT_OF_MEMORY);
if (!v.isObject()) {
NS_WARNING("Unable to find interface object on global");
continue;
}
// Define the shim on the interfaces object.
ok = JS_DefineProperty(cx, interfaces, geckoName, v,
JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY,
JS_PropertyStub, JS_StrictPropertyStub);
NS_ENSURE_TRUE(ok, NS_ERROR_OUT_OF_MEMORY);
}
FillPropertyDescriptor(desc, global, JS::ObjectValue(*components), false);
return NS_OK;
}
NS_IMETHODIMP
nsWindowSH::NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj_, jsid id_, JSObject **objp,
bool *_retval)
{
JS::Rooted<JSObject*> obj(cx, obj_);
JS::Rooted<jsid> id(cx, id_);
if (!JSID_IS_STRING(id)) {
return NS_OK;
}
MOZ_ASSERT(*_retval == true); // guaranteed by XPC_WN_Helper_NewResolve
nsGlobalWindow *win = nsGlobalWindow::FromWrapper(wrapper);
MOZ_ASSERT(win->IsInnerWindow());
// Don't resolve standard classes on XrayWrappers, only resolve them if we're
// resolving on the real global object.
bool isXray = xpc::WrapperFactory::IsXrayWrapper(obj);
if (!isXray) {
bool did_resolve = false;
if (!JS_ResolveStandardClass(cx, obj, id, &did_resolve)) {
// Return NS_OK to avoid stomping over the exception that was passed
// down from the ResolveStandardClass call.
*_retval = false;
return NS_OK;
}
if (did_resolve) {
*objp = obj;
return NS_OK;
}
}
// WebIDL quickstubs handle location for us, but Xrays don't see those. So if
// we're an Xray, we have to resolve stuff here to make "window.location =
// someString" work.
if (sLocation_id == id && isXray) {
nsCOMPtr<nsIDOMLocation> location;
nsresult rv = win->GetLocation(getter_AddRefs(location));
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JS::Value> v(cx);
rv = WrapNative(cx, location, &NS_GET_IID(nsIDOMLocation), true, &v);
NS_ENSURE_SUCCESS(rv, rv);
bool ok = JS_DefinePropertyById(cx, obj, id, v,
JSPROP_PERMANENT | JSPROP_ENUMERATE,
JS_PropertyStub, LocationSetterUnwrapper);
if (!ok) {
return NS_ERROR_FAILURE;
}
*objp = obj;
return NS_OK;
}
// WebIDL quickstubs handle "top" for us, but Xrays don't see those. So if
// we're an Xray and we want "top" to be JSPROP_PERMANENT, we need to resolve
// it here.
if (sTop_id == id && isXray) {
nsCOMPtr<nsIDOMWindow> top;
nsresult rv = win->GetScriptableTop(getter_AddRefs(top));
NS_ENSURE_SUCCESS(rv, rv);
JS::Rooted<JS::Value> v(cx);
js::AssertSameCompartment(cx, obj);
rv = WrapNative(cx, top, &NS_GET_IID(nsIDOMWindow), true, &v);
NS_ENSURE_SUCCESS(rv, rv);
// Hold on to the top window object as a global property so we
// don't need to worry about losing expando properties etc.
if (!JS_DefinePropertyById(cx, obj, id, v,
JSPROP_READONLY | JSPROP_PERMANENT |
JSPROP_ENUMERATE,
JS_PropertyStub, JS_StrictPropertyStub)) {
return NS_ERROR_FAILURE;
}
*objp = obj;
return NS_OK;
}
if (isXray) {
// We promise to resolve on the underlying object first. That will create
// the actual interface object if needed and store it in a data structure
// hanging off the global. Then our second call will wrap up in an Xray as
// needed. We do things this way because we use the existence of the
// object in that data structure as a flag that indicates that its name
// (and any relevant named constructor names) has been resolved before;
// this allows us to avoid re-resolving in the Xray case if the property is
// deleted by page script.
JS::Rooted<JSObject*> global(cx,
js::UncheckedUnwrap(obj, /* stopAtOuter = */ false));
JSAutoCompartment ac(cx, global);
JS::Rooted<JSPropertyDescriptor> desc(cx);
if (!win->DoNewResolve(cx, global, id, &desc)) {
return NS_ERROR_FAILURE;
}
// If we have an object here, that means we resolved the property.
// But if the value is undefined, that means that GlobalResolve
// also already defined it, so we don't have to.
if (desc.object() && !desc.value().isUndefined() &&
!JS_DefinePropertyById(cx, global, id, desc.value(),
desc.attributes(),
desc.getter(), desc.setter())) {
return NS_ERROR_FAILURE;
}
}
JS::Rooted<JSPropertyDescriptor> desc(cx);
if (!win->DoNewResolve(cx, obj, id, &desc)) {
return NS_ERROR_FAILURE;
}
if (desc.object()) {
// If we have an object here, that means we resolved the property.
// But if the value is undefined, that means that GlobalResolve
// also already defined it, so we don't have to. Note that in the
// Xray case we should never see undefined.
MOZ_ASSERT_IF(isXray, !desc.value().isUndefined());
if (!desc.value().isUndefined() &&
!JS_DefinePropertyById(cx, obj, id, desc.value(),
desc.attributes(),
desc.getter(), desc.setter())) {
return NS_ERROR_FAILURE;
}
*objp = obj;
return NS_OK;
}
if (sDocument_id == id) {
nsCOMPtr<nsIDocument> document = win->GetDoc();
JS::Rooted<JS::Value> v(cx);
nsresult rv = WrapNative(cx, document, document,
&NS_GET_IID(nsIDOMDocument), &v, false);
NS_ENSURE_SUCCESS(rv, rv);
// nsIDocument::WrapObject will handle defining the property.
*objp = obj;
// NB: We need to do this for any Xray wrapper.
if (xpc::WrapperFactory::IsXrayWrapper(obj)) {
*_retval = JS_WrapValue(cx, &v) &&
JS_DefineProperty(cx, obj, "document", v,
JSPROP_READONLY | JSPROP_ENUMERATE,
JS_PropertyStub, JS_StrictPropertyStub);
if (!*_retval) {
return NS_ERROR_UNEXPECTED;
}
}
return NS_OK;
}
return nsDOMGenericSH::NewResolve(wrapper, cx, obj, id, objp, _retval);
}
NS_IMETHODIMP
nsWindowSH::OuterObject(nsIXPConnectWrappedNative *wrapper, JSContext * cx,
JSObject * obj, JSObject * *_retval)
{
nsGlobalWindow *origWin = nsGlobalWindow::FromWrapper(wrapper);
nsGlobalWindow *win = origWin->GetOuterWindowInternal();
if (!win) {
// If we no longer have an outer window. No code should ever be
// running on a window w/o an outer, which means this hook should
// never be called when we have no outer. But just in case, return
// null to prevent leaking an inner window to code in a different
// window.
*_retval = nullptr;
return NS_ERROR_UNEXPECTED;
}
JS::Rooted<JSObject*> winObj(cx, win->FastGetGlobalJSObject());
MOZ_ASSERT(winObj);
// Note that while |wrapper| is same-compartment with cx, the outer window
// might not be. If we're running script in an inactive scope and evalute
// |this|, the outer window is actually a cross-compartment wrapper. So we
// need to wrap here.
if (!JS_WrapObject(cx, &winObj)) {
*_retval = nullptr;
return NS_ERROR_UNEXPECTED;
}
*_retval = winObj;
return NS_OK;
}
NS_IMETHODIMP
nsLocationSH::PreCreate(nsISupports *nativeObj, JSContext *cx,
JSObject *globalObj, JSObject **parentObj)
{
// window.location can be held onto by both evil pages that want to track the
// user's progress on the web and bookmarklets that want to use the location
// object. Parent it to the outer window so that access checks do the Right
// Thing.
*parentObj = globalObj;
nsCOMPtr<nsIDOMLocation> safeLoc(do_QueryInterface(nativeObj));
if (!safeLoc) {
// Oops, this wasn't really a location object. This can happen if someone
// tries to use our scriptable helper as a real object and tries to wrap
// it, see bug 319296
return NS_OK;
}
nsLocation *loc = (nsLocation *)safeLoc.get();
nsIDocShell *ds = loc->GetDocShell();
if (!ds) {
NS_WARNING("Refusing to create a location in the wrong scope");
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsIScriptGlobalObject> sgo = do_GetInterface(ds);
if (!sgo) {
NS_WARNING("Refusing to create a location in the wrong scope because the "
"docshell is being destroyed");
return NS_ERROR_UNEXPECTED;
}
*parentObj = sgo->GetGlobalJSObject();
return *parentObj ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsLocationSH::AddProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid aId, jsval *vp, bool *_retval)
{
JS::Rooted<JSObject*> rootedObj(cx, obj);
// Shadowing protection. This will go away when nsLocation moves to the new
// bindings.
JS::Rooted<jsid> id(cx, aId);
if (wrapper->HasNativeMember(id)) {
JS_ReportError(cx, "Permission denied to shadow native property");
return NS_ERROR_FAILURE;
}
nsLocation* location = static_cast<nsLocation*>(GetNative(wrapper, rootedObj));
location->PreserveWrapper(location);
return NS_OK;
}
// EventTarget helper
NS_IMETHODIMP
nsEventTargetSH::PreCreate(nsISupports *nativeObj, JSContext *cx,
JSObject *aGlobalObj, JSObject **parentObj)
{
JS::Rooted<JSObject*> globalObj(cx, aGlobalObj);
DOMEventTargetHelper* target = DOMEventTargetHelper::FromSupports(nativeObj);
nsCOMPtr<nsIScriptGlobalObject> native_parent;
target->GetParentObject(getter_AddRefs(native_parent));
*parentObj = native_parent ? native_parent->GetGlobalJSObject() : globalObj;
return *parentObj ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsEventTargetSH::AddProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid id, jsval *vp, bool *_retval)
{
nsEventTargetSH::PreserveWrapper(GetNative(wrapper, obj));
return NS_OK;
}
void
nsEventTargetSH::PreserveWrapper(nsISupports *aNative)
{
DOMEventTargetHelper* target = DOMEventTargetHelper::FromSupports(aNative);
target->PreserveWrapper(aNative);
}
// Storage2SH
// One reason we need a newResolve hook is that in order for
// enumeration of storage object keys to work the keys we're
// enumerating need to exist on the storage object for the JS engine
// to find them.
NS_IMETHODIMP
nsStorage2SH::NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, jsid aId, JSObject **objp,
bool *_retval)
{
JS::Rooted<jsid> id(cx, aId);
if (ObjectIsNativeWrapper(cx, obj)) {
return NS_OK;
}
JS::Rooted<JSObject*> realObj(cx, wrapper->GetJSObject());
JSAutoCompartment ac(cx, realObj);
// First check to see if the property is defined on our prototype,
// after converting id to a string if it's an integer.
JS::Rooted<JSString*> jsstr(cx, IdToString(cx, id));
if (!jsstr) {
return NS_OK;
}
JS::Rooted<JSObject*> proto(cx);
if (!::JS_GetPrototype(cx, realObj, &proto)) {
return NS_ERROR_FAILURE;
}
bool hasProp;
if (proto &&
(::JS_HasPropertyById(cx, proto, id, &hasProp) &&
hasProp)) {
// We found the property we're resolving on the prototype,
// nothing left to do here then.
return NS_OK;
}
// We're resolving property that doesn't exist on the prototype,
// check if the key exists in the storage object.
nsCOMPtr<nsIDOMStorage> storage(do_QueryWrappedNative(wrapper));
nsDependentJSString depStr;
NS_ENSURE_TRUE(depStr.init(cx, jsstr), NS_ERROR_UNEXPECTED);
// GetItem() will return null if the caller can't access the session
// storage item.
nsAutoString data;
nsresult rv = storage->GetItem(depStr, data);
NS_ENSURE_SUCCESS(rv, rv);
if (!DOMStringIsNull(data)) {
if (!::JS_DefinePropertyById(cx, realObj, id, JS::UndefinedHandleValue,
JSPROP_ENUMERATE)) {
return NS_ERROR_FAILURE;
}
*objp = realObj;
}
return NS_OK;
}
NS_IMETHODIMP
nsStorage2SH::GetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *aObj, jsid aId, jsval *vp, bool *_retval)
{
JS::Rooted<JSObject*> obj(cx, aObj);
JS::Rooted<jsid> id(cx, aId);
nsCOMPtr<nsIDOMStorage> storage(do_QueryWrappedNative(wrapper));
NS_ENSURE_TRUE(storage, NS_ERROR_UNEXPECTED);
JSString* key = IdToString(cx, id);
NS_ENSURE_TRUE(key, NS_ERROR_UNEXPECTED);
nsDependentJSString keyStr;
NS_ENSURE_TRUE(keyStr.init(cx, key), NS_ERROR_UNEXPECTED);
// For native wrappers, do not get random names on storage objects.
if (ObjectIsNativeWrapper(cx, obj)) {
return NS_ERROR_NOT_AVAILABLE;
}
nsAutoString val;
nsresult rv = storage->GetItem(keyStr, val);
NS_ENSURE_SUCCESS(rv, rv);
if (DOMStringIsNull(val)) {
// No such key.
*vp = JSVAL_VOID;
} else {
JSString* str =
JS_NewUCStringCopyN(cx, static_cast<const jschar *>(val.get()),
val.Length());
NS_ENSURE_TRUE(str, NS_ERROR_OUT_OF_MEMORY);
*vp = STRING_TO_JSVAL(str);
}
return NS_SUCCESS_I_DID_SOMETHING;
}
NS_IMETHODIMP
nsStorage2SH::SetProperty(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *obj, jsid aId,
jsval *vp, bool *_retval)
{
JS::Rooted<jsid> id(cx, aId);
nsCOMPtr<nsIDOMStorage> storage(do_QueryWrappedNative(wrapper));
NS_ENSURE_TRUE(storage, NS_ERROR_UNEXPECTED);
JSString *key = IdToString(cx, id);
NS_ENSURE_TRUE(key, NS_ERROR_UNEXPECTED);
nsDependentJSString keyStr;
NS_ENSURE_TRUE(keyStr.init(cx, key), NS_ERROR_UNEXPECTED);
JS::Rooted<JS::Value> val(cx, *vp);
JSString *value = JS::ToString(cx, val);
NS_ENSURE_TRUE(value, NS_ERROR_UNEXPECTED);
nsDependentJSString valueStr;
NS_ENSURE_TRUE(valueStr.init(cx, value), NS_ERROR_UNEXPECTED);
nsresult rv = storage->SetItem(keyStr, valueStr);
if (NS_SUCCEEDED(rv)) {
rv = NS_SUCCESS_I_DID_SOMETHING;
}
return rv;
}
NS_IMETHODIMP
nsStorage2SH::DelProperty(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *obj, jsid aId,
bool *_retval)
{
JS::Rooted<jsid> id(cx, aId);
nsCOMPtr<nsIDOMStorage> storage(do_QueryWrappedNative(wrapper));
NS_ENSURE_TRUE(storage, NS_ERROR_UNEXPECTED);
JSString *key = IdToString(cx, id);
NS_ENSURE_TRUE(key, NS_ERROR_UNEXPECTED);
nsDependentJSString keyStr;
NS_ENSURE_TRUE(keyStr.init(cx, key), NS_ERROR_UNEXPECTED);
nsresult rv = storage->RemoveItem(keyStr);
if (NS_FAILED(rv)) {
return rv;
}
*_retval = true;
return NS_SUCCESS_I_DID_SOMETHING;
}
NS_IMETHODIMP
nsStorage2SH::NewEnumerate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *obj, uint32_t enum_op, jsval *statep,
jsid *idp, bool *_retval)
{
if (enum_op == JSENUMERATE_INIT || enum_op == JSENUMERATE_INIT_ALL) {
nsCOMPtr<nsPIDOMStorage> storage(do_QueryWrappedNative(wrapper));
// XXXndeakin need to free the keys afterwards
nsTArray<nsString> *keys = storage->GetKeys();
NS_ENSURE_TRUE(keys, NS_ERROR_OUT_OF_MEMORY);
*statep = PRIVATE_TO_JSVAL(keys);
if (idp) {
*idp = INT_TO_JSID(keys->Length());
}
return NS_OK;
}
nsTArray<nsString> *keys = (nsTArray<nsString> *)statep->toPrivate();
if (enum_op == JSENUMERATE_NEXT && keys->Length() != 0) {
nsString& key = keys->ElementAt(0);
JS::Rooted<JSString*> str(cx, JS_NewUCStringCopyN(cx, key.get(), key.Length()));
NS_ENSURE_TRUE(str, NS_ERROR_OUT_OF_MEMORY);
JS::Rooted<jsid> id(cx);
JS_StringToId(cx, str, &id);
*idp = id;
keys->RemoveElementAt(0);
return NS_OK;
}
// destroy the keys array if we have no keys or if we're done
NS_ABORT_IF_FALSE(enum_op == JSENUMERATE_DESTROY ||
(enum_op == JSENUMERATE_NEXT && keys->Length() == 0),
"Bad call from the JS engine");
delete keys;
*statep = JSVAL_NULL;
return NS_OK;
}
// nsIDOMEventListener::HandleEvent() 'this' converter helper
NS_INTERFACE_MAP_BEGIN(nsEventListenerThisTranslator)
NS_INTERFACE_MAP_ENTRY(nsIXPCFunctionThisTranslator)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(nsEventListenerThisTranslator)
NS_IMPL_RELEASE(nsEventListenerThisTranslator)
NS_IMETHODIMP
nsEventListenerThisTranslator::TranslateThis(nsISupports *aInitialThis,
nsISupports **_retval)
{
nsCOMPtr<nsIDOMEvent> event(do_QueryInterface(aInitialThis));
NS_ENSURE_TRUE(event, NS_ERROR_UNEXPECTED);
nsCOMPtr<EventTarget> target = event->InternalDOMEvent()->GetCurrentTarget();
target.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
nsDOMConstructorSH::PreCreate(nsISupports *nativeObj, JSContext *cx,
JSObject *aGlobalObj, JSObject **parentObj)
{
JS::Rooted<JSObject*> globalObj(cx, aGlobalObj);
nsDOMConstructor *wrapped = static_cast<nsDOMConstructor *>(nativeObj);
#ifdef DEBUG
{
nsCOMPtr<nsIDOMDOMConstructor> is_constructor =
do_QueryInterface(nativeObj);
NS_ASSERTION(is_constructor, "How did we not get a constructor?");
}
#endif
return wrapped->PreCreate(cx, globalObj, parentObj);
}
NS_IMETHODIMP
nsDOMConstructorSH::NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *aObj, jsid aId, JSObject **objp,
bool *_retval)
{
JS::Rooted<JSObject*> obj(cx, aObj);
JS::Rooted<jsid> id(cx, aId);
// For regular DOM constructors, we have our interface constants defined on
// us by nsWindowSH::GlobalResolve. However, XrayWrappers can't see these
// interface constants (as they look like expando properties) so we have to
// specially resolve those constants here, but only for Xray wrappers.
if (!ObjectIsNativeWrapper(cx, obj)) {
return NS_OK;
}
JS::Rooted<JSObject*> nativePropsObj(cx, xpc::XrayUtils::GetNativePropertiesObject(cx, obj));
nsDOMConstructor *wrapped =
static_cast<nsDOMConstructor *>(wrapper->Native());
nsresult rv = wrapped->ResolveInterfaceConstants(cx, nativePropsObj);
NS_ENSURE_SUCCESS(rv, rv);
// Now re-lookup the ID to see if we should report back that we resolved the
// looked-for constant. Note that we don't have to worry about infinitely
// recurring back here because the Xray wrapper's holder object doesn't call
// NewResolve hooks.
bool found;
if (!JS_HasPropertyById(cx, nativePropsObj, id, &found)) {
*_retval = false;
return NS_OK;
}
if (found) {
*objp = obj;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMConstructorSH::Call(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *aObj, const JS::CallArgs &args, bool *_retval)
{
JS::Rooted<JSObject*> obj(cx, aObj);
MOZ_ASSERT(obj);
nsDOMConstructor *wrapped =
static_cast<nsDOMConstructor *>(wrapper->Native());
#ifdef DEBUG
{
nsCOMPtr<nsIDOMDOMConstructor> is_constructor =
do_QueryWrappedNative(wrapper);
NS_ASSERTION(is_constructor, "How did we not get a constructor?");
}
#endif
return wrapped->Construct(wrapper, cx, obj, args, _retval);
}
NS_IMETHODIMP
nsDOMConstructorSH::Construct(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
JSObject *aObj, const JS::CallArgs &args, bool *_retval)
{
JS::Rooted<JSObject*> obj(cx, aObj);
MOZ_ASSERT(obj);
nsDOMConstructor *wrapped =
static_cast<nsDOMConstructor *>(wrapper->Native());
#ifdef DEBUG
{
nsCOMPtr<nsIDOMDOMConstructor> is_constructor =
do_QueryWrappedNative(wrapper);
NS_ASSERTION(is_constructor, "How did we not get a constructor?");
}
#endif
return wrapped->Construct(wrapper, cx, obj, args, _retval);
}
NS_IMETHODIMP
nsDOMConstructorSH::HasInstance(nsIXPConnectWrappedNative *wrapper,
JSContext *cx, JSObject *aObj, JS::Handle<JS::Value> val,
bool *bp, bool *_retval)
{
JS::Rooted<JSObject*> obj(cx, aObj);
nsDOMConstructor *wrapped =
static_cast<nsDOMConstructor *>(wrapper->Native());
#ifdef DEBUG
{
nsCOMPtr<nsIDOMDOMConstructor> is_constructor =
do_QueryWrappedNative(wrapper);
NS_ASSERTION(is_constructor, "How did we not get a constructor?");
}
#endif
return wrapped->HasInstance(wrapper, cx, obj, val, bp, _retval);
}
NS_IMETHODIMP
nsNonDOMObjectSH::GetFlags(uint32_t *aFlags)
{
// This is NOT a DOM Object. Use this helper class for cases when you need
// to do something like implement nsISecurityCheckedComponent in a meaningful
// way.
*aFlags = nsIClassInfo::MAIN_THREAD_ONLY | nsIClassInfo::SINGLETON_CLASSINFO;
return NS_OK;
}
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