/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

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

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

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

/*

 * Implementation of DOMTokenList specified by HTML5.

 */

#ifndef nsDOMTokenList_h___

#define nsDOMTokenList_h___

#include "nsCOMPtr.h"

#include "nsContentUtils.h"

#include "nsDOMString.h"

#include "nsWhitespaceTokenizer.h"

#include "nsWrapperCache.h"

#include "mozilla/dom/Element.h"

#include "mozilla/dom/BindingDeclarations.h"

#include "mozilla/dom/DOMTokenListSupportedTokens.h"

namespace mozilla {

class ErrorResult;

namespace dom {

class DocGroup;

} // namespace dom

} // namespace mozilla

class nsAttrValue;

class nsAtom;

// nsISupports must be on the primary inheritance chain

class nsDOMTokenList : public nsISupports,

                       public nsWrapperCache

{

protected:

  typedef mozilla::dom::Element Element;

  typedef mozilla::dom::DocGroup DocGroup;

  typedef nsWhitespaceTokenizerTemplate<nsContentUtils::IsHTMLWhitespace>

    WhitespaceTokenizer;

public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsDOMTokenList)

  nsDOMTokenList(Element* aElement, nsAtom* aAttrAtom,

                 const mozilla::dom::DOMTokenListSupportedTokenArray = nullptr);

  virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;

  Element* GetParentObject()

  {

    return mElement;

  }

  DocGroup* GetDocGroup() const;

  void RemoveDuplicates(const nsAttrValue* aAttr);

  uint32_t Length();

  void Item(uint32_t aIndex, nsAString& aResult)

  {

    bool found;

    IndexedGetter(aIndex, found, aResult);

    if (!found) {

      SetDOMStringToNull(aResult);

    }

  }

  void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aResult);

  bool Contains(const nsAString& aToken);

  void Add(const nsAString& aToken, mozilla::ErrorResult& aError);

  void Add(const nsTArray<nsString>& aTokens,

           mozilla::ErrorResult& aError);

  void Remove(const nsAString& aToken, mozilla::ErrorResult& aError);

  void Remove(const nsTArray<nsString>& aTokens,

              mozilla::ErrorResult& aError);

  bool Replace(const nsAString& aToken,

               const nsAString& aNewToken,

               mozilla::ErrorResult& aError);

  bool Toggle(const nsAString& aToken,

              const mozilla::dom::Optional<bool>& force,

              mozilla::ErrorResult& aError);

  bool Supports(const nsAString& aToken,

                mozilla::ErrorResult& aError);

  void GetValue(nsAString& aResult) { Stringify(aResult); }

  void SetValue(const nsAString& aValue, mozilla::ErrorResult& rv);

  void Stringify(nsAString& aResult);

protected:

  virtual ~nsDOMTokenList();

  nsresult CheckToken(const nsAString& aStr);

  nsresult CheckTokens(const nsTArray<nsString>& aStr);

  void RemoveDuplicatesInternal(nsTArray<RefPtr<nsAtom>>* aArray,

                                uint32_t aStart);

  void AddInternal(const nsAttrValue* aAttr,

                   const nsTArray<nsString>& aTokens);

  void RemoveInternal(const nsAttrValue* aAttr,

                      const nsTArray<nsString>& aTokens);

  bool ReplaceInternal(const nsAttrValue* aAttr,

                       const nsAString& aToken,

                       const nsAString& aNewToken);

  inline const nsAttrValue* GetParsedAttr();

  nsCOMPtr<Element> mElement;

  RefPtr<nsAtom> mAttrAtom;

  const mozilla::dom::DOMTokenListSupportedTokenArray mSupportedTokens;

};

#endif // nsDOMTokenList_h___