The Tor Browser: dom/base/nsDOMScriptObjectFactory.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * vim: set ts=2 sw=2 et tw=78:

     3  *

     4  * This Source Code Form is subject to the terms of the Mozilla Public

     5  * License, v. 2.0. If a copy of the MPL was not distributed with this

     6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.

     7  *

     8  *

     9  * This Original Code has been modified by IBM Corporation.

    10  * Modifications made by IBM described herein are

    11  * Copyright (c) International Business Machines

    12  * Corporation, 2000

    13  *

    14  * Modifications to Mozilla code or documentation

    15  * identified per MPL Section 3.3

    16  *

    17  * Date         Modified by     Description of modification

    18  * 03/27/2000   IBM Corp.       Added PR_CALLBACK for Optlink

    19  *                               use in OS2

    20  */

    22 #include "nsDOMScriptObjectFactory.h"

    23 #include "nsScriptNameSpaceManager.h"

    24 #include "nsIObserverService.h"

    25 #include "nsJSEnvironment.h"

    26 #include "nsGlobalWindow.h"

    27 #include "nsCRT.h"

    28 #ifdef MOZ_XUL

    29 #include "nsXULPrototypeCache.h"

    30 #endif

    31 #include "nsThreadUtils.h"

    33 using mozilla::dom::GetNameSpaceManager;

    35 nsDOMScriptObjectFactory::nsDOMScriptObjectFactory()

    36 {

    37   nsCOMPtr<nsIObserverService> observerService =

    38     mozilla::services::GetObserverService();

    39   if (observerService) {

    40     observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);

    41   }

    43 }

    45 NS_INTERFACE_MAP_BEGIN(nsDOMScriptObjectFactory)

    46   NS_INTERFACE_MAP_ENTRY(nsIDOMScriptObjectFactory)

    47   NS_INTERFACE_MAP_ENTRY(nsIObserver)

    48   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMScriptObjectFactory)

    49 NS_INTERFACE_MAP_END

    52 NS_IMPL_ADDREF(nsDOMScriptObjectFactory)

    53 NS_IMPL_RELEASE(nsDOMScriptObjectFactory)

    55 NS_IMETHODIMP_(nsISupports *)

    56 nsDOMScriptObjectFactory::GetClassInfoInstance(nsDOMClassInfoID aID)

    57 {

    58   return NS_GetDOMClassInfoInstance(aID);

    59 }

    61 NS_IMETHODIMP_(nsISupports *)

    62 nsDOMScriptObjectFactory::GetExternalClassInfoInstance(const nsAString& aName)

    63 {

    64   nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();

    65   NS_ENSURE_TRUE(nameSpaceManager, nullptr);

    67   const nsGlobalNameStruct *globalStruct = nameSpaceManager->LookupName(aName);

    68   if (globalStruct) {

    69     if (globalStruct->mType == nsGlobalNameStruct::eTypeExternalClassInfoCreator) {

    70       nsresult rv;

    71       nsCOMPtr<nsIDOMCIExtension> creator(do_CreateInstance(globalStruct->mCID, &rv));

    72       NS_ENSURE_SUCCESS(rv, nullptr);

    74       rv = creator->RegisterDOMCI(NS_ConvertUTF16toUTF8(aName).get(), this);

    75       NS_ENSURE_SUCCESS(rv, nullptr);

    77       globalStruct = nameSpaceManager->LookupName(aName);

    78       NS_ENSURE_TRUE(globalStruct, nullptr);

    80       NS_ASSERTION(globalStruct->mType == nsGlobalNameStruct::eTypeExternalClassInfo,

    81                    "The classinfo data for this class didn't get registered.");

    82     }

    83     if (globalStruct->mType == nsGlobalNameStruct::eTypeExternalClassInfo) {

    84       return nsDOMClassInfo::GetClassInfoInstance(globalStruct->mData);

    85     }

    86   }

    87   return nullptr;

    88 }

    90 NS_IMETHODIMP

    91 nsDOMScriptObjectFactory::Observe(nsISupports *aSubject,

    92                                   const char *aTopic,

    93                                   const char16_t *someData)

    94 {

    95   if (!nsCRT::strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {

    96 #ifdef MOZ_XUL

    97     // Flush the XUL cache since it holds JS roots, and we're about to

    98     // start the final GC.

    99     nsXULPrototypeCache* cache = nsXULPrototypeCache::GetInstance();

   101     if (cache)

   102       cache->Flush();

   103 #endif

   104   }

   106   return NS_OK;

   107 }

   109 NS_IMETHODIMP

   110 nsDOMScriptObjectFactory::RegisterDOMClassInfo(const char *aName,

   111 					       nsDOMClassInfoExternalConstructorFnc aConstructorFptr,

   112 					       const nsIID *aProtoChainInterface,

   113 					       const nsIID **aInterfaces,

   114 					       uint32_t aScriptableFlags,

   115 					       bool aHasClassInterface,

   116 					       const nsCID *aConstructorCID)

   117 {

   118   nsScriptNameSpaceManager *nameSpaceManager = GetNameSpaceManager();

   119   NS_ENSURE_TRUE(nameSpaceManager, NS_ERROR_NOT_INITIALIZED);

   121   return nameSpaceManager->RegisterDOMCIData(aName,

   122                                              aConstructorFptr,

   123                                              aProtoChainInterface,

   124                                              aInterfaces,

   125                                              aScriptableFlags,

   126                                              aHasClassInterface,

   127                                              aConstructorCID);

   128 }

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