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3af8e705c1
We often want to call a function with either a built-in or custom property, and that means either passing it as a string (and converting back and forth between strings and PropertyIDs) or using the PropertyIDOrCustomPropertyName variant, which complicates user code. PropertyNameAndID is intended to make that easier: Create it with a string or PropertyID, and it can tell you either one.
63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
/*
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* Copyright (c) 2025, 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 <AK/GenericShorthands.h>
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#include <AK/Optional.h>
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#include <LibWeb/CSS/PropertyID.h>
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#include <LibWeb/CSS/PropertyName.h>
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#include <LibWeb/CSS/Serialize.h>
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namespace Web::CSS {
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class WEB_API PropertyNameAndID {
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public:
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static Optional<PropertyNameAndID> from_name(FlyString name)
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{
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if (is_a_custom_property_name_string(name))
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return PropertyNameAndID(move(name), PropertyID::Custom);
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if (auto property_id = property_id_from_string(name); property_id.has_value())
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return PropertyNameAndID(string_from_property_id(property_id.value()), property_id.value());
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return {};
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}
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static PropertyNameAndID from_id(PropertyID property_id)
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{
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VERIFY(!first_is_one_of(property_id, PropertyID::Invalid, PropertyID::Custom));
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return PropertyNameAndID({}, property_id);
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}
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bool is_custom_property() const { return m_property_id == PropertyID::Custom; }
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PropertyID id() const { return m_property_id; }
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FlyString const& name() const
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{
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if (!m_name.has_value())
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m_name = string_from_property_id(m_property_id);
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return m_name.value();
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}
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String to_string() const
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{
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return serialize_an_identifier(name());
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}
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private:
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PropertyNameAndID(Optional<FlyString> name, PropertyID id)
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: m_name(move(name))
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, m_property_id(id)
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{
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}
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mutable Optional<FlyString> m_name;
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PropertyID m_property_id;
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};
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}
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