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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
#include <AK/RefCounted.h>
#include <AK/String.h>
#include <AK/Vector.h>
namespace Web::CSS {
class Selector : public RefCounted<Selector> {
public:
struct SimpleSelector {
enum class Type {
Invalid,
Universal,
TagName,
Id,
Class,
Attribute,
PseudoClass,
PseudoElement,
};
Type type { Type::Invalid };
struct NthChildPattern {
int step_size = 0;
int offset = 0;
static NthChildPattern parse(StringView const& args);
};
struct PseudoClass {
enum class Type {
None,
Link,
Visited,
Hover,
Focus,
FirstChild,
LastChild,
OnlyChild,
Empty,
Root,
FirstOfType,
LastOfType,
NthChild,
NthLastChild,
Disabled,
Enabled,
Checked,
Not,
Active,
};
Type type { Type::None };
// FIXME: We don't need this field on every single SimpleSelector, but it's also annoying to malloc it somewhere.
// Only used when "pseudo_class" is "NthChild" or "NthLastChild".
NthChildPattern nth_child_pattern;
// FIXME: This wants to be a Selector, rather than parsing it each time it is used.
String not_selector {};
};
PseudoClass pseudo_class;
enum class PseudoElement {
None,
Before,
After,
FirstLine,
FirstLetter,
};
PseudoElement pseudo_element { PseudoElement::None };
FlyString value;
struct Attribute {
enum class MatchType {
None,
HasAttribute,
ExactValueMatch,
ContainsWord, // [att~=val]
ContainsString, // [att*=val]
StartsWithSegment, // [att|=val]
StartsWithString, // [att^=val]
EndsWithString, // [att$=val]
};
MatchType match_type { MatchType::None };
FlyString name;
String value;
};
Attribute attribute;
};
struct ComplexSelector {
enum class Relation {
None,
ImmediateChild,
Descendant,
AdjacentSibling,
GeneralSibling,
Column,
};
Relation relation { Relation::None };
using CompoundSelector = Vector<SimpleSelector>;
CompoundSelector compound_selector;
};
static NonnullRefPtr<Selector> create(Vector<ComplexSelector>&& complex_selectors)
{
return adopt_ref(*new Selector(move(complex_selectors)));
}
~Selector();
Vector<ComplexSelector> const& complex_selectors() const { return m_complex_selectors; }
u32 specificity() const;
private:
explicit Selector(Vector<ComplexSelector>&&);
Vector<ComplexSelector> m_complex_selectors;
};
}
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