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76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "IDBWrapperCache.h"
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#include "nsContentUtils.h"
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USING_INDEXEDDB_NAMESPACE
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NS_IMPL_CYCLE_COLLECTION_CLASS(IDBWrapperCache)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBWrapperCache,
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nsDOMEventTargetHelper)
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// Don't need NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS because
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// nsDOMEventTargetHelper does it for us.
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBWrapperCache,
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nsDOMEventTargetHelper)
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if (tmp->mScriptOwner) {
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NS_DROP_JS_OBJECTS(tmp, IDBWrapperCache);
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tmp->mScriptOwner = nsnull;
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(IDBWrapperCache,
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nsDOMEventTargetHelper)
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// Don't need NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER because
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// nsDOMEventTargetHelper does it for us.
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if (tmp->mScriptOwner) {
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_CALLBACK(tmp->mScriptOwner,
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"mScriptOwner")
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}
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBWrapperCache)
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NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
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NS_IMPL_ADDREF_INHERITED(IDBWrapperCache, nsDOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(IDBWrapperCache, nsDOMEventTargetHelper)
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IDBWrapperCache::~IDBWrapperCache()
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{
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if (mScriptOwner) {
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NS_DROP_JS_OBJECTS(this, IDBWrapperCache);
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}
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}
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bool
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IDBWrapperCache::SetScriptOwner(JSObject* aScriptOwner)
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{
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if (!aScriptOwner) {
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NS_ASSERTION(!mScriptOwner,
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"Don't null out existing owner, we need to call "
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"DropJSObjects!");
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return true;
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}
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mScriptOwner = aScriptOwner;
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nsISupports* thisSupports = NS_CYCLE_COLLECTION_UPCAST(this, IDBWrapperCache);
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nsXPCOMCycleCollectionParticipant* participant;
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CallQueryInterface(this, &participant);
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nsresult rv = nsContentUtils::HoldJSObjects(thisSupports, participant);
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if (NS_FAILED(rv)) {
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NS_WARNING("nsContentUtils::HoldJSObjects failed.");
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mScriptOwner = nsnull;
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return false;
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}
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return true;
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}
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