StyleSheetList.h (1859B)
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 #ifndef mozilla_dom_StyleSheetList_h 8 #define mozilla_dom_StyleSheetList_h 9 10 #include "mozilla/dom/DocumentOrShadowRoot.h" 11 #include "nsContentUtils.h" 12 #include "nsStubMutationObserver.h" 13 #include "nsWrapperCache.h" 14 15 class nsINode; 16 17 namespace mozilla { 18 class StyleSheet; 19 20 namespace dom { 21 22 class StyleSheetList final : public nsStubMutationObserver, 23 public nsWrapperCache { 24 public: 25 NS_DECL_CYCLE_COLLECTING_ISUPPORTS 26 NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(StyleSheetList) 27 28 NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED 29 30 explicit StyleSheetList(DocumentOrShadowRoot& aScope); 31 32 JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final; 33 34 nsINode* GetParentObject() const { 35 return mDocumentOrShadowRoot ? &mDocumentOrShadowRoot->AsNode() : nullptr; 36 } 37 38 uint32_t Length() const { 39 return mDocumentOrShadowRoot ? mDocumentOrShadowRoot->SheetCount() : 0; 40 } 41 42 StyleSheet* IndexedGetter(uint32_t aIndex, bool& aFound) const { 43 if (!mDocumentOrShadowRoot) { 44 aFound = false; 45 return nullptr; 46 } 47 48 StyleSheet* sheet = mDocumentOrShadowRoot->SheetAt(aIndex); 49 aFound = !!sheet; 50 return sheet; 51 } 52 53 StyleSheet* Item(uint32_t aIndex) const { 54 bool dummy = false; 55 return IndexedGetter(aIndex, dummy); 56 } 57 58 protected: 59 virtual ~StyleSheetList(); 60 61 DocumentOrShadowRoot* 62 mDocumentOrShadowRoot; // Weak, cleared on "NodeWillBeDestroyed". 63 }; 64 65 } // namespace dom 66 } // namespace mozilla 67 68 #endif // mozilla_dom_StyleSheetList_h