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https://github.com/LadybirdBrowser/ladybird.git
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a6dfc74e93
Before this change, we were going through the chain of base classes for each IDL interface object and having them set the prototype to their prototype. Instead of doing that, reorder things so that we set the right prototype immediately in Foo::initialize(), and then don't bother in all the base class overrides. This knocks off a ~1% profile item on Speedometer 3.
85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
/*
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* Copyright (c) 2018-2024, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2023-2025, 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 <LibWeb/Bindings/CSSStyleDeclarationPrototype.h>
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#include <LibWeb/Bindings/ExceptionOrUtils.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSStyleDeclaration.h>
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#include <LibWeb/CSS/StyleComputer.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Element.h>
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namespace Web::CSS {
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GC_DEFINE_ALLOCATOR(CSSStyleDeclaration);
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CSSStyleDeclaration::CSSStyleDeclaration(JS::Realm& realm, Computed computed, Readonly readonly)
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: PlatformObject(realm)
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, m_computed(computed == Computed::Yes)
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, m_readonly(readonly == Readonly::Yes)
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{
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m_legacy_platform_object_flags = LegacyPlatformObjectFlags {
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.supports_indexed_properties = true,
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};
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}
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void CSSStyleDeclaration::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSStyleDeclaration);
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Base::initialize(realm);
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}
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// https://drafts.csswg.org/cssom/#update-style-attribute-for
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void CSSStyleDeclaration::update_style_attribute()
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{
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// 1. Assert: declaration block’s computed flag is unset.
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VERIFY(!is_computed());
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// 2. Let owner node be declaration block’s owner node.
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// 3. If owner node is null, then return.
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if (!owner_node().has_value())
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return;
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// 4. Set declaration block’s updating flag.
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set_is_updating(true);
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// 5. Set an attribute value for owner node using "style" and the result of serializing declaration block.
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MUST(owner_node()->element().set_attribute(HTML::AttributeNames::style, serialized()));
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// 6. Unset declaration block’s updating flag.
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set_is_updating(false);
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}
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// https://drafts.csswg.org/cssom/#dom-cssstyledeclaration-csstext
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String CSSStyleDeclaration::css_text() const
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{
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// 1. If the computed flag is set, then return the empty string.
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if (is_computed())
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return {};
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// 2. Return the result of serializing the declarations.
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return serialized();
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}
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Optional<JS::Value> CSSStyleDeclaration::item_value(size_t index) const
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{
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auto value = item(index);
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if (value.is_empty())
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return {};
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return JS::PrimitiveString::create(vm(), value);
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}
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void CSSStyleDeclaration::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_parent_rule);
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if (m_owner_node.has_value())
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m_owner_node->visit(visitor);
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}
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}
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