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No known WPT improvements. CSSImageValue is a black box which we implement the same as CSSStyleValue, so this may not be observably different.
68 lines
2.6 KiB
C++
68 lines
2.6 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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#include "CSSImageValue.h"
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#include <LibWeb/Bindings/CSSImageValuePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/PropertyNameAndID.h>
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#include <LibWeb/CSS/StyleValues/StyleValue.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::CSS {
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GC_DEFINE_ALLOCATOR(CSSImageValue);
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GC::Ref<CSSImageValue> CSSImageValue::create(JS::Realm& realm, NonnullRefPtr<StyleValue const> source_value)
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{
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return realm.create<CSSImageValue>(realm, move(source_value));
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}
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CSSImageValue::CSSImageValue(JS::Realm& realm, NonnullRefPtr<StyleValue const> source_value)
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: CSSStyleValue(realm, move(source_value))
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{
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}
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void CSSImageValue::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSImageValue);
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Base::initialize(realm);
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#stylevalue-serialization
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WebIDL::ExceptionOr<String> CSSImageValue::to_string() const
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{
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// AD-HOC: The spec doesn't say how to serialize this, as it's intentionally a black box.
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// We just rely on CSSStyleValue serializing its held StyleValue.
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return Base::to_string();
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#create-an-internal-representation
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WebIDL::ExceptionOr<NonnullRefPtr<StyleValue const>> CSSImageValue::create_an_internal_representation(PropertyNameAndID const& property) const
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{
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// If value is a CSSStyleValue subclass,
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// If value does not match the grammar of a list-valued property iteration of property, throw a TypeError.
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// NB: https://drafts.css-houdini.org/css-typed-om-1/#cssstylevalue-match-a-grammar doesn't list CSSImageValue, but
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// we should match <image>.
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bool const matches_grammar = [&] {
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if (property.is_custom_property()) {
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// FIXME: If this is a registered custom property, check if that allows <image>.
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return true;
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}
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return property_accepts_type(property.id(), ValueType::Image);
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}();
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if (!matches_grammar) {
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, MUST(String::formatted("Property '{}' does not accept <image>", property.name())) };
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}
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// FIXME: If any component of property’s CSS grammar has a limited numeric range, and the corresponding part of value
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// is a CSSUnitValue that is outside of that range, replace that value with the result of wrapping it in a
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// fresh CSSMathSum whose values internal slot contains only that part of value.
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// Return the value.
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return NonnullRefPtr { *source_value() };
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}
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}
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