ladybird/Libraries/LibWeb/CSS/CSSMediaRule.cpp
Shannon Booth f87041bf3a LibGC+Everywhere: Factor out a LibGC from LibJS
Resulting in a massive rename across almost everywhere! Alongside the
namespace change, we now have the following names:

 * JS::NonnullGCPtr -> GC::Ref
 * JS::GCPtr -> GC::Ptr
 * JS::HeapFunction -> GC::Function
 * JS::CellImpl -> GC::Cell
 * JS::Handle -> GC::Root
2024-11-15 14:49:20 +01:00

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