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89 lines
3.7 KiB
C++
89 lines
3.7 KiB
C++
/*
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* Copyright (c) 2026, Callum Law <callumlaw1709@outlook.com>.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <LibWeb/CSS/CounterStyleDefinition.h>
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#include <LibWeb/CSS/Enums.h>
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namespace Web::CSS {
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// https://drafts.csswg.org/css-counter-styles-3/#counter-styles
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class CounterStyle : public RefCounted<CounterStyle> {
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public:
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static NonnullRefPtr<CounterStyle const> decimal();
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static NonnullRefPtr<CounterStyle const> disc();
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static NonnullRefPtr<CounterStyle const> from_counter_style_definition(CounterStyleDefinition const&, StyleScope const&);
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static NonnullRefPtr<CounterStyle const> create(FlyString name, CounterStyleAlgorithm algorithm, CounterStyleNegativeSign negative_sign, FlyString prefix, FlyString suffix, Vector<CounterStyleRangeEntry> range, Optional<FlyString> fallback, CounterStylePad pad)
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{
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// NB: All counter styles apart from 'decimal' must have a fallback.
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VERIFY(fallback.has_value() || name == "decimal"_fly_string);
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return adopt_ref(*new (nothrow) CounterStyle(move(name), move(algorithm), move(negative_sign), move(prefix), move(suffix), move(range), move(fallback), move(pad)));
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}
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FlyString const& name() const { return m_name; }
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CounterStyleAlgorithm const& algorithm() const { return m_algorithm; }
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CounterStyleNegativeSign const& negative_sign() const { return m_negative_sign; }
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FlyString const& prefix() const { return m_prefix; }
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FlyString const& suffix() const { return m_suffix; }
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Vector<CounterStyleRangeEntry> const& range() const { return m_range; }
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Optional<FlyString> const& fallback() const { return m_fallback; }
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CounterStylePad const& pad() const { return m_pad; }
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Optional<String> generate_an_initial_representation_for_the_counter_value(i64 value) const;
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bool uses_a_negative_sign() const;
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bool equals(CounterStyle const&) const;
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virtual ~CounterStyle() = default;
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private:
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CounterStyle(FlyString name, CounterStyleAlgorithm algorithm, CounterStyleNegativeSign negative_sign, FlyString prefix, FlyString suffix, Vector<CounterStyleRangeEntry> range, Optional<FlyString> fallback, CounterStylePad pad)
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: m_name(move(name))
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, m_algorithm(move(algorithm))
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, m_negative_sign(move(negative_sign))
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, m_prefix(move(prefix))
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, m_suffix(move(suffix))
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, m_range(move(range))
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, m_fallback(move(fallback))
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, m_pad(move(pad))
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{
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}
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// Counter styles are composed of:
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// a name, to identify the style
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FlyString m_name;
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// an algorithm, which transforms integer counter values into a basic string representation
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CounterStyleAlgorithm m_algorithm;
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// a negative sign, which is prepended or appended to the representation of a negative counter value.
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CounterStyleNegativeSign m_negative_sign;
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// a prefix, to prepend to the representation
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FlyString m_prefix;
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// a suffix to append to the representation
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FlyString m_suffix;
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// a range, which limits the values that a counter style handles
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Vector<CounterStyleRangeEntry> m_range;
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// FIXME: a spoken form, which describes how to read out the counter style in a speech synthesizer
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// and a fallback style, to render the representation with when the counter value is outside the counter style’s
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// range or the counter style otherwise can’t render the counter value
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Optional<FlyString> m_fallback;
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// AD-HOC: We store the `pad` descriptor here as well to have everything in one place
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CounterStylePad m_pad;
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};
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String generate_a_counter_representation(RefPtr<CounterStyle const> const& counter_style, StyleScope const& style_scope, i32 value);
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}
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