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LibWeb: Implement counter-[increment,reset,set] properties

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These control the state of CSS counters.

Parsing code for `reversed(counter-name)` is implemented, but disabled
for now until we are able to resolve values for those.
This commit is contained in:
Sam Atkins 2024-07-24 15:47:11 +01:00
commit 017d6c3314
Notes: github-actions[bot] 2024-07-26 10:05:39 +00:00
15 changed files with 315 additions and 5 deletions
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47
Userland/Libraries/LibWeb/CSS/StyleValues/CounterDefinitionsStyleValue.h Normal file
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/*
* Copyright (c) 2024, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
#include <LibWeb/CSS/StyleValue.h>
namespace Web::CSS {
struct CounterDefinition {
FlyString name;
bool is_reversed;
ValueComparingRefPtr<StyleValue const> value;
};
/**
* Holds a list of CounterDefinitions.
* Shared between counter-increment, counter-reset, and counter-set properties that have (almost) identical grammar.
*/
class CounterDefinitionsStyleValue : public StyleValueWithDefaultOperators<CounterDefinitionsStyleValue> {
public:
static ValueComparingNonnullRefPtr<CounterDefinitionsStyleValue> create(Vector<CounterDefinition> counter_definitions)
{
return adopt_ref(*new (nothrow) CounterDefinitionsStyleValue(move(counter_definitions)));
}
virtual ~CounterDefinitionsStyleValue() override = default;
auto const& counter_definitions() const { return m_counter_definitions; }
virtual String to_string() const override;
bool properties_equal(CounterDefinitionsStyleValue const& other) const;
private:
explicit CounterDefinitionsStyleValue(Vector<CounterDefinition> counter_definitions)
: StyleValueWithDefaultOperators(Type::CounterDefinitions)
, m_counter_definitions(move(counter_definitions))
{
}
Vector<CounterDefinition> m_counter_definitions;
};
}