StyleSheetList.cpp (1521B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #include "mozilla/dom/StyleSheetList.h" 8 9 #include "mozilla/dom/StyleSheetListBinding.h" 10 #include "nsINode.h" 11 12 namespace mozilla::dom { 13 14 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(StyleSheetList) 15 16 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(StyleSheetList) 17 NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY 18 NS_INTERFACE_MAP_ENTRY(nsIMutationObserver) 19 NS_INTERFACE_MAP_ENTRY(nsISupports) 20 NS_INTERFACE_MAP_END 21 22 NS_IMPL_CYCLE_COLLECTING_ADDREF(StyleSheetList) 23 NS_IMPL_CYCLE_COLLECTING_RELEASE(StyleSheetList) 24 25 /* virtual */ 26 JSObject* StyleSheetList::WrapObject(JSContext* aCx, 27 JS::Handle<JSObject*> aGivenProto) { 28 return StyleSheetList_Binding::Wrap(aCx, this, aGivenProto); 29 } 30 31 void StyleSheetList::NodeWillBeDestroyed(nsINode* aNode) { 32 mDocumentOrShadowRoot = nullptr; 33 } 34 35 StyleSheetList::StyleSheetList(DocumentOrShadowRoot& aScope) 36 : mDocumentOrShadowRoot(&aScope) { 37 SetEnabledCallbacks(nsIMutationObserver::kNodeWillBeDestroyed); 38 mDocumentOrShadowRoot->AsNode().AddMutationObserver(this); 39 } 40 41 StyleSheetList::~StyleSheetList() { 42 if (mDocumentOrShadowRoot) { 43 mDocumentOrShadowRoot->AsNode().RemoveMutationObserver(this); 44 } 45 } 46 47 } // namespace mozilla::dom