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6428c9990d
We don't serialize these the way WPT expects, because we don't implement the comment-insertion rules from CSS-Syntax. We don't implement that for regular serialization either, so it's something we can worry about later.
114 lines
4.7 KiB
C++
114 lines
4.7 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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#include "CSSVariableReferenceValue.h"
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#include <LibWeb/Bindings/CSSVariableReferenceValuePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSUnparsedValue.h>
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#include <LibWeb/CSS/PropertyName.h>
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#include <LibWeb/HTML/CustomElements/CustomElementName.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::CSS {
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GC_DEFINE_ALLOCATOR(CSSVariableReferenceValue);
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GC::Ref<CSSVariableReferenceValue> CSSVariableReferenceValue::create(JS::Realm& realm, FlyString variable, GC::Ptr<CSSUnparsedValue> fallback)
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{
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return realm.create<CSSVariableReferenceValue>(realm, move(variable), move(fallback));
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssvariablereferencevalue-cssvariablereferencevalue
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WebIDL::ExceptionOr<GC::Ref<CSSVariableReferenceValue>> CSSVariableReferenceValue::construct_impl(JS::Realm& realm, FlyString variable, GC::Ptr<CSSUnparsedValue> fallback)
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{
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// The CSSVariableReferenceValue(variable, fallback) constructor must, when called, perform the following steps:
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// 1. If variable is not a custom property name string, throw a TypeError.
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if (!is_a_custom_property_name_string(variable))
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, MUST(String::formatted("'{}' is not a valid CSS custom property name", variable)) };
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// 2. Return a new CSSVariableReferenceValue with its variable internal slot set to variable and its fallback internal slot set to fallback.
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return CSSVariableReferenceValue::create(realm, move(variable), move(fallback));
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}
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CSSVariableReferenceValue::CSSVariableReferenceValue(JS::Realm& realm, FlyString variable, GC::Ptr<CSSUnparsedValue> fallback)
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: Bindings::PlatformObject(realm)
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, m_variable(move(variable))
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, m_fallback(move(fallback))
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{
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}
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CSSVariableReferenceValue::~CSSVariableReferenceValue() = default;
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void CSSVariableReferenceValue::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSVariableReferenceValue);
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Base::initialize(realm);
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}
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void CSSVariableReferenceValue::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_fallback);
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssvariablereferencevalue-variable
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String CSSVariableReferenceValue::variable() const
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{
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// The getter for the variable attribute of a CSSVariableReferenceValue this must return its variable internal slot.
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return m_variable.to_string();
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssvariablereferencevalue-variable
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WebIDL::ExceptionOr<void> CSSVariableReferenceValue::set_variable(FlyString variable)
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{
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// The variable attribute of a CSSVariableReferenceValue this must, on setting a variable variable, perform the following steps:
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// 1. If variable is not a custom property name string, throw a TypeError.
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if (!is_a_custom_property_name_string(variable))
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, MUST(String::formatted("'{}' is not a valid CSS custom property name", variable)) };
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// 2. Otherwise, set this’s variable internal slot to variable.
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m_variable = move(variable);
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return {};
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssvariablereferencevalue-fallback
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GC::Ptr<CSSUnparsedValue> CSSVariableReferenceValue::fallback() const
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{
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// AD-HOC: No spec algorithm, see https://github.com/w3c/css-houdini-drafts/issues/1146#issuecomment-3188550133
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return m_fallback;
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssvariablereferencevalue-fallback
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WebIDL::ExceptionOr<void> CSSVariableReferenceValue::set_fallback(GC::Ptr<CSSUnparsedValue> fallback)
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{
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// AD-HOC: No spec algorithm, see https://github.com/w3c/css-houdini-drafts/issues/1146#issuecomment-3188550133
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m_fallback = move(fallback);
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return {};
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#serialize-a-cssvariablereferencevalue
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String CSSVariableReferenceValue::to_string() const
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{
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// To serialize a CSSVariableReferenceValue this:
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// 1. Let s initially be "var(".
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StringBuilder s;
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s.append("var("sv);
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// 2. Append this’s variable internal slot to s.
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s.append(m_variable);
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// 3. If this’s fallback internal slot is not null, append ", " to s, then serialize the fallback internal slot and append it to s.
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if (m_fallback) {
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// AD-HOC: Tested behaviour requires we append "," without the space. https://github.com/w3c/css-houdini-drafts/issues/1148
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s.append(","sv);
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s.append(m_fallback->to_string());
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}
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// 4. Append ")" to s and return s.
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s.append(")"sv);
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return s.to_string_without_validation();
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}
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}
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