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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.
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022, Andreas Kling <andreas@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 <LibJS/Runtime/Realm.h>
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#include <LibWeb/Bindings/CSSMediaRulePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSMediaRule.h>
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namespace Web::CSS {
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GC_DEFINE_ALLOCATOR(CSSMediaRule);
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GC::Ref<CSSMediaRule> CSSMediaRule::create(JS::Realm& realm, MediaList& media_queries, CSSRuleList& rules)
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{
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return realm.create<CSSMediaRule>(realm, media_queries, rules);
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}
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CSSMediaRule::CSSMediaRule(JS::Realm& realm, MediaList& media, CSSRuleList& rules)
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: CSSConditionRule(realm, rules, Type::Media)
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, m_media(media)
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{
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}
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void CSSMediaRule::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSMediaRule);
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Base::initialize(realm);
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}
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void CSSMediaRule::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_media);
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}
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String CSSMediaRule::condition_text() const
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{
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return m_media->media_text();
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}
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// https://www.w3.org/TR/cssom-1/#serialize-a-css-rule
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String CSSMediaRule::serialized() const
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{
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// The result of concatenating the following:
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StringBuilder builder;
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// 1. The string "@media", followed by a single SPACE (U+0020).
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builder.append("@media "sv);
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// 2. The result of performing serialize a media query list on rule’s media query list.
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builder.append(condition_text());
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// 3. A single SPACE (U+0020), followed by the string "{", i.e., LEFT CURLY BRACKET (U+007B), followed by a newline.
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builder.append(" {\n"sv);
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// 4. The result of performing serialize a CSS rule on each rule in the rule’s cssRules list,
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// filtering out empty strings, indenting each item with two spaces, all joined with newline.
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for (size_t i = 0; i < css_rules().length(); i++) {
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auto rule = css_rules().item(i);
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auto result = rule->css_text();
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if (result.is_empty())
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continue;
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builder.append(" "sv);
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builder.append(result);
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builder.append('\n');
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}
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// 5. A newline, followed by the string "}", i.e., RIGHT CURLY BRACKET (U+007D)
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// AD-HOC: All modern browsers omit the ending newline if there are no CSS rules, so let's do the same.
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// If there are rules, the required newline will be appended in the for-loop above.
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builder.append('}');
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return MUST(builder.to_string());
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}
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}
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