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/*
* Copyright (C) 2022 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,
* 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 <wtf/Forward.h>
#include <wtf/OptionSet.h>
#include <wtf/text/AtomString.h>
namespace WebCore {
class CSSValue;
class Element;
namespace CQ {
struct ContainerCondition;
struct SizeCondition;
struct SizeFeature;
struct UnknownQuery {
String name;
String text;
};
using QueryInParens = std::variant<ContainerCondition, SizeFeature, UnknownQuery>;
enum class LogicalOperator : uint8_t { And, Or, Not };
enum class ComparisonOperator : uint8_t { LessThan, LessThanOrEqual, Equal, GreaterThan, GreaterThanOrEqual };
enum class Syntax : uint8_t { Boolean, Colon, Range };
struct ContainerCondition {
LogicalOperator logicalOperator { LogicalOperator::And };
Vector<QueryInParens> queries;
};
struct Comparison {
ComparisonOperator op { ComparisonOperator::Equal };
RefPtr<CSSValue> value;
};
struct SizeFeature {
AtomString name;
Syntax syntax;
std::optional<Comparison> leftComparison;
std::optional<Comparison> rightComparison;
};
namespace FeatureNames {
const AtomString& width();
const AtomString& height();
const AtomString& inlineSize();
const AtomString& blockSize();
const AtomString& aspectRatio();
const AtomString& orientation();
};
enum class Axis : uint8_t {
Block = 1 << 0,
Inline = 1 << 1,
Width = 1 << 2,
Height = 1 << 3,
};
OptionSet<Axis> requiredAxesForFeature(const AtomString&);
struct ContainerQuery {
AtomString name;
OptionSet<CQ::Axis> axisFilter;
CQ::ContainerCondition condition;
};
void serialize(StringBuilder&, const ContainerCondition&);
void serialize(StringBuilder&, const ContainerQuery&);
}
using CachedQueryContainers = Vector<Ref<const Element>>;
}
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