119 lines
4.5 KiB
C++
119 lines
4.5 KiB
C++
/*
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* Copyright (C) 2015-2021 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. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* 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
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* OF THIS 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 "CSSValue.h"
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#include "CSSVariableData.h"
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#include "CSSVariableReferenceValue.h"
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#include "Length.h"
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#include "StyleImage.h"
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#include <wtf/Variant.h>
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namespace WebCore {
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class CSSParserToken;
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class CSSCustomPropertyValue final : public CSSValue {
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public:
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using VariantValue = Variant<Monostate, Ref<CSSVariableReferenceValue>, CSSValueID, Ref<CSSVariableData>, Length, Ref<StyleImage>>;
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static Ref<CSSCustomPropertyValue> createEmpty(const AtomString& name);
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static Ref<CSSCustomPropertyValue> createUnresolved(const AtomString& name, Ref<CSSVariableReferenceValue>&& value)
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{
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return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
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}
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static Ref<CSSCustomPropertyValue> createUnresolved(const AtomString& name, CSSValueID value)
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{
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return adoptRef(*new CSSCustomPropertyValue(name, { value }));
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}
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static Ref<CSSCustomPropertyValue> createWithID(const AtomString& name, CSSValueID id)
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{
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ASSERT(id == CSSValueInherit || id == CSSValueInitial || id == CSSValueUnset || id == CSSValueRevert || id == CSSValueInvalid);
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return adoptRef(*new CSSCustomPropertyValue(name, { id }));
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}
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static Ref<CSSCustomPropertyValue> createSyntaxAll(const AtomString& name, Ref<CSSVariableData>&& value)
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{
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return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
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}
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static Ref<CSSCustomPropertyValue> createSyntaxLength(const AtomString& name, Length value)
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{
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ASSERT(!value.isUndefined());
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ASSERT(!value.isCalculated());
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return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
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}
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static Ref<CSSCustomPropertyValue> createSyntaxImage(const AtomString& name, Ref<StyleImage>&& value)
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{
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return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
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}
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static Ref<CSSCustomPropertyValue> create(const CSSCustomPropertyValue& other)
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{
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return adoptRef(*new CSSCustomPropertyValue(other));
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}
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String customCSSText() const;
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const AtomString& name() const { return m_name; }
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bool isResolved() const { return !WTF::holds_alternative<Ref<CSSVariableReferenceValue>>(m_value); }
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bool isUnset() const { return WTF::holds_alternative<CSSValueID>(m_value) && WTF::get<CSSValueID>(m_value) == CSSValueUnset; }
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bool isInvalid() const { return WTF::holds_alternative<CSSValueID>(m_value) && WTF::get<CSSValueID>(m_value) == CSSValueInvalid; }
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const VariantValue& value() const { return m_value; }
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Vector<CSSParserToken> tokens() const;
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bool equals(const CSSCustomPropertyValue&) const;
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private:
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CSSCustomPropertyValue(const AtomString& name, VariantValue&& value)
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: CSSValue(CustomPropertyClass)
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, m_name(name)
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, m_value(WTFMove(value))
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{
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}
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CSSCustomPropertyValue(const CSSCustomPropertyValue& other)
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: CSSValue(CustomPropertyClass)
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, m_name(other.m_name)
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, m_value(other.m_value)
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, m_stringValue(other.m_stringValue)
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{
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}
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const AtomString m_name;
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const VariantValue m_value;
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mutable String m_stringValue;
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};
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSCustomPropertyValue, isCustomPropertyValue())
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