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c1d4323cf7
There are multiple things happening here which are interconnected: - We now use AbstractElement to refer to the source of a counter, which means we also need to pass that around to compute `content`. - Give AbstractElement new helper methods that are needed by CountersSet, so it doesn't have to care whether it's dealing with a true Element or PseudoElement. - The CountersSet algorithms now walk the layout tree instead of DOM tree, so TreeBuilder needs to wait until the layout node exists before it resolves counters for it. - Resolve counters when creating a pseudo-element's layout node. We awkwardly compute the `content` value up to twice: Once to figure out what kind of node we need to make, and then if it's a string, we do so again after counters are resolved so we can get the true value of any `counter()` functions. This will need adjusting in the future but it works for now.
55 lines
2 KiB
C++
55 lines
2 KiB
C++
/*
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* Copyright (c) 2024, Sam Atkins <sam@ladybird.org>
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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/CSSStyleValue.h>
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namespace Web::CSS {
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// https://drafts.csswg.org/css-lists-3/#counter-functions
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class CounterStyleValue : public StyleValueWithDefaultOperators<CounterStyleValue> {
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public:
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enum class CounterFunction {
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Counter,
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Counters,
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};
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static ValueComparingNonnullRefPtr<CounterStyleValue const> create_counter(FlyString counter_name, ValueComparingNonnullRefPtr<CSSStyleValue const> counter_style)
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{
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return adopt_ref(*new (nothrow) CounterStyleValue(CounterFunction::Counter, move(counter_name), move(counter_style), {}));
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}
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static ValueComparingNonnullRefPtr<CounterStyleValue const> create_counters(FlyString counter_name, FlyString join_string, ValueComparingNonnullRefPtr<CSSStyleValue const> counter_style)
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{
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return adopt_ref(*new (nothrow) CounterStyleValue(CounterFunction::Counters, move(counter_name), move(counter_style), move(join_string)));
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}
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virtual ~CounterStyleValue() override;
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CounterFunction function_type() const { return m_properties.function; }
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auto counter_name() const { return m_properties.counter_name; }
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auto counter_style() const { return m_properties.counter_style; }
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auto join_string() const { return m_properties.join_string; }
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String resolve(DOM::AbstractElement&) const;
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virtual String to_string(SerializationMode) const override;
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bool properties_equal(CounterStyleValue const& other) const;
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private:
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explicit CounterStyleValue(CounterFunction, FlyString counter_name, ValueComparingNonnullRefPtr<CSSStyleValue const> counter_style, FlyString join_string);
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struct Properties {
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CounterFunction function;
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FlyString counter_name;
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ValueComparingNonnullRefPtr<CSSStyleValue const> counter_style;
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FlyString join_string;
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bool operator==(Properties const&) const = default;
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} m_properties;
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};
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}
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