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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CSSValue.h"
#include "CSSVariableData.h"
#include "CSSVariableReferenceValue.h"
#include "Length.h"
#include "StyleImage.h"
#include <wtf/Variant.h>
namespace WebCore {
class CSSParserToken;
class RenderStyle;
class CSSCustomPropertyValue final : public CSSValue {
public:
using VariantValue = Variant<Ref<CSSVariableReferenceValue>, CSSValueID, Ref<CSSVariableData>, Length, Ref<StyleImage>>;
static Ref<CSSCustomPropertyValue> createUnresolved(const AtomString& name, Ref<CSSVariableReferenceValue>&& value)
{
return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
}
static Ref<CSSCustomPropertyValue> createUnresolved(const AtomString& name, CSSValueID value)
{
return adoptRef(*new CSSCustomPropertyValue(name, { value }));
}
static Ref<CSSCustomPropertyValue> createWithID(const AtomString& name, CSSValueID id)
{
ASSERT(id == CSSValueInherit || id == CSSValueInitial || id == CSSValueUnset || id == CSSValueRevert || id == CSSValueInvalid);
return adoptRef(*new CSSCustomPropertyValue(name, { id }));
}
static Ref<CSSCustomPropertyValue> createSyntaxAll(const AtomString& name, Ref<CSSVariableData>&& value)
{
return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
}
static Ref<CSSCustomPropertyValue> createSyntaxLength(const AtomString& name, Length value)
{
ASSERT(!value.isUndefined());
ASSERT(!value.isCalculated());
return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
}
static Ref<CSSCustomPropertyValue> createSyntaxImage(const AtomString& name, Ref<StyleImage>&& value)
{
return adoptRef(*new CSSCustomPropertyValue(name, { WTFMove(value) }));
}
static Ref<CSSCustomPropertyValue> create(const CSSCustomPropertyValue& other)
{
return adoptRef(*new CSSCustomPropertyValue(other));
}
String customCSSText() const;
const AtomString& name() const { return m_name; }
bool isResolved() const { return !WTF::holds_alternative<Ref<CSSVariableReferenceValue>>(m_value); }
bool isUnset() const { return WTF::holds_alternative<CSSValueID>(m_value) && WTF::get<CSSValueID>(m_value) == CSSValueUnset; }
bool isInvalid() const { return WTF::holds_alternative<CSSValueID>(m_value) && WTF::get<CSSValueID>(m_value) == CSSValueInvalid; }
const VariantValue& value() const { return m_value; }
Vector<CSSParserToken> tokens() const;
bool equals(const CSSCustomPropertyValue& other) const;
private:
CSSCustomPropertyValue(const AtomString& name, VariantValue&& value)
: CSSValue(CustomPropertyClass)
, m_name(name)
, m_value(WTFMove(value))
, m_serialized(false)
{
}
CSSCustomPropertyValue(const CSSCustomPropertyValue& other)
: CSSValue(CustomPropertyClass)
, m_name(other.m_name)
, m_value(CSSValueUnset)
, m_stringValue(other.m_stringValue)
, m_serialized(other.m_serialized)
{
// No copy constructor for Ref<>, so we have to do this ourselves
auto visitor = WTF::makeVisitor([&](const Ref<CSSVariableReferenceValue>& value) {
m_value = value.copyRef();
}, [&](const CSSValueID& value) {
m_value = value;
}, [&](const Ref<CSSVariableData>& value) {
m_value = value.copyRef();
}, [&](const Length& value) {
m_value = value;
}, [&](const Ref<StyleImage>& value) {
m_value = value.copyRef();
});
WTF::visit(visitor, other.m_value);
}
const AtomString m_name;
VariantValue m_value;
mutable String m_stringValue;
mutable bool m_serialized { false }; // FIXME: Should use null m_stringValue instead of a separate boolean.
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSCustomPropertyValue, isCustomPropertyValue())