92 lines
3.6 KiB
C++
92 lines
3.6 KiB
C++
/*
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* Copyright (C) 2010 Google Inc. All rights reserved.
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* Copyright (C) 2015, 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "Element.h"
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namespace WebCore {
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class DOMTokenList {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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using IsSupportedTokenFunction = WTF::Function<bool(Document&, StringView)>;
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DOMTokenList(Element&, const QualifiedName& attributeName, IsSupportedTokenFunction&& isSupportedToken = { });
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void associatedAttributeValueChanged(const AtomString&);
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void ref() { m_element.ref(); }
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void deref() { m_element.deref(); }
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unsigned length() const;
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const AtomString& item(unsigned index) const;
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WEBCORE_EXPORT bool contains(const AtomString&) const;
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ExceptionOr<void> add(const Vector<String>&);
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ExceptionOr<void> add(const AtomString&);
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ExceptionOr<void> remove(const Vector<String>&);
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ExceptionOr<void> remove(const AtomString&);
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WEBCORE_EXPORT ExceptionOr<bool> toggle(const AtomString&, std::optional<bool> force);
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ExceptionOr<bool> replace(const AtomString& token, const AtomString& newToken);
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ExceptionOr<bool> supports(StringView token);
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Element& element() const { return m_element; }
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WEBCORE_EXPORT void setValue(const String&);
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WEBCORE_EXPORT const AtomString& value() const;
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private:
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void updateTokensFromAttributeValue(const String&);
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void updateAssociatedAttributeFromTokens();
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WEBCORE_EXPORT Vector<AtomString>& tokens();
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const Vector<AtomString>& tokens() const { return const_cast<DOMTokenList&>(*this).tokens(); }
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static ExceptionOr<void> validateToken(const String&);
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static ExceptionOr<void> validateTokens(const String* tokens, size_t length);
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ExceptionOr<void> addInternal(const String* tokens, size_t length);
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ExceptionOr<void> removeInternal(const String* tokens, size_t length);
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Element& m_element;
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const WebCore::QualifiedName& m_attributeName;
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bool m_inUpdateAssociatedAttributeFromTokens { false };
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bool m_tokensNeedUpdating { true };
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Vector<AtomString> m_tokens;
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IsSupportedTokenFunction m_isSupportedToken;
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};
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inline unsigned DOMTokenList::length() const
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{
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return tokens().size();
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}
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inline const AtomString& DOMTokenList::item(unsigned index) const
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{
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auto& tokens = this->tokens();
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return index < tokens.size() ? tokens[index] : nullAtom();
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}
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} // namespace WebCore
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