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 /* 8 * Implementation of DOMTokenList specified by HTML5. 9 */ 10 11 #ifndef nsDOMTokenList_h___ 12 #define nsDOMTokenList_h___ 13 14 #include "nsCOMPtr.h" 15 #include "nsContentUtils.h" 16 #include "nsDOMString.h" 17 #include "nsWhitespaceTokenizer.h" 18 #include "nsWrapperCache.h" 19 #include "mozilla/dom/BindingDeclarations.h" 20 #include "mozilla/dom/DOMTokenListSupportedTokens.h" 21 22 namespace mozilla { 23 class ErrorResult; 24 namespace dom { 25 class DocGroup; 26 class Element; 27 } // namespace dom 28 } // namespace mozilla 29 30 class nsAttrValue; 31 class nsAtom; 32 33 // nsISupports must be on the primary inheritance chain 34 35 class nsDOMTokenList : public nsISupports, public nsWrapperCache { 36 protected: 37 typedef mozilla::dom::Element Element; 38 typedef mozilla::dom::DocGroup DocGroup; 39 typedef nsWhitespaceTokenizerTemplate<nsContentUtils::IsHTMLWhitespace> 40 WhitespaceTokenizer; 41 42 public: 43 NS_DECL_CYCLE_COLLECTING_ISUPPORTS 44 NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsDOMTokenList) 45 46 nsDOMTokenList(Element* aElement, nsAtom* aAttrAtom, 47 const mozilla::dom::DOMTokenListSupportedTokenArray = nullptr); 48 49 virtual JSObject* WrapObject(JSContext* cx, 50 JS::Handle<JSObject*> aGivenProto) override; 51 GetParentObject()52 Element* GetParentObject() { return mElement; } 53 54 DocGroup* GetDocGroup() const; 55 56 void RemoveDuplicates(const nsAttrValue* aAttr); 57 uint32_t Length(); Item(uint32_t aIndex,nsAString & aResult)58 void Item(uint32_t aIndex, nsAString& aResult) { 59 bool found; 60 IndexedGetter(aIndex, found, aResult); 61 if (!found) { 62 SetDOMStringToNull(aResult); 63 } 64 } 65 void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aResult); 66 bool Contains(const nsAString& aToken); 67 void Add(const nsAString& aToken, mozilla::ErrorResult& aError); 68 void Add(const nsTArray<nsString>& aTokens, mozilla::ErrorResult& aError); 69 void Remove(const nsAString& aToken, mozilla::ErrorResult& aError); 70 void Remove(const nsTArray<nsString>& aTokens, mozilla::ErrorResult& aError); 71 bool Replace(const nsAString& aToken, const nsAString& aNewToken, 72 mozilla::ErrorResult& aError); 73 bool Toggle(const nsAString& aToken, 74 const mozilla::dom::Optional<bool>& force, 75 mozilla::ErrorResult& aError); 76 bool Supports(const nsAString& aToken, mozilla::ErrorResult& aError); 77 78 void GetValue(nsAString& aResult); 79 void SetValue(const nsAString& aValue, mozilla::ErrorResult& rv); 80 81 protected: 82 virtual ~nsDOMTokenList(); 83 84 nsresult CheckToken(const nsAString& aStr); 85 nsresult CheckTokens(const nsTArray<nsString>& aStr); 86 void AddInternal(const nsAttrValue* aAttr, const nsTArray<nsString>& aTokens); 87 void RemoveInternal(const nsAttrValue* aAttr, 88 const nsTArray<nsString>& aTokens); 89 bool ReplaceInternal(const nsAttrValue* aAttr, const nsAString& aToken, 90 const nsAString& aNewToken); 91 inline const nsAttrValue* GetParsedAttr(); 92 93 nsCOMPtr<Element> mElement; 94 RefPtr<nsAtom> mAttrAtom; 95 const mozilla::dom::DOMTokenListSupportedTokenArray mSupportedTokens; 96 }; 97 98 #endif // nsDOMTokenList_h___ 99