ladybird/Libraries/LibWeb/CSS/CSSImportRule.h
Sam Atkins c19139f1c7 LibWeb/CSS: Assign layers to @import statements
Specifically, we create and assign a layer if its import conditions
currently apply.

With this change, every case in the `layer-import.html` test actually
functions correctly, apart from our lack of proper `load` event
support. (Tested by hacking in a 100ms wait after the `await Promise()`
statement.)
2025-12-08 13:30:53 +00:00

73 lines
2.3 KiB
C++

/*
* Copyright (c) 2021, the SerenityOS developers.
* Copyright (c) 2021-2025, Sam Atkins <sam@ladybird.org>
* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/CSS/CSSRule.h>
#include <LibWeb/CSS/CSSStyleSheet.h>
#include <LibWeb/CSS/URL.h>
#include <LibWeb/DOM/DocumentLoadEventDelayer.h>
#include <LibWeb/Export.h>
#include <LibWeb/Forward.h>
namespace Web::CSS {
class WEB_API CSSImportRule final
: public CSSRule {
WEB_PLATFORM_OBJECT(CSSImportRule, CSSRule);
GC_DECLARE_ALLOCATOR(CSSImportRule);
public:
[[nodiscard]] static GC::Ref<CSSImportRule> create(JS::Realm&, URL, GC::Ptr<DOM::Document>, Optional<FlyString> layer, RefPtr<Supports>, GC::Ref<MediaList>);
virtual ~CSSImportRule();
URL const& url() const { return m_url; }
String href() const { return m_url.url(); }
CSSStyleSheet* loaded_style_sheet() { return m_style_sheet; }
CSSStyleSheet const* loaded_style_sheet() const { return m_style_sheet; }
GC::Ref<MediaList> media() const;
CSSStyleSheet* style_sheet_for_bindings() { return m_style_sheet; }
Optional<FlyString> layer_name() const;
Optional<String> supports_text() const;
bool matches() const;
Optional<FlyString> internal_layer_name() const { return m_layer_internal; }
Optional<FlyString> internal_qualified_layer_name(Badge<StyleScope>) const;
private:
CSSImportRule(JS::Realm&, URL, GC::Ptr<DOM::Document>, Optional<FlyString>, RefPtr<Supports>, GC::Ref<MediaList>);
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
virtual void dump(StringBuilder&, int indent_levels) const override;
virtual void set_parent_style_sheet(CSSStyleSheet*) override;
virtual String serialized() const override;
void fetch();
void set_style_sheet(GC::Ref<CSSStyleSheet>);
URL m_url;
GC::Ptr<DOM::Document> m_document;
Optional<FlyString> m_layer;
Optional<FlyString> m_layer_internal;
RefPtr<Supports> m_supports;
GC::Ref<MediaList> m_media;
GC::Ptr<CSSStyleSheet> m_style_sheet;
Optional<DOM::DocumentLoadEventDelayer> m_document_load_event_delayer;
};
template<>
inline bool CSSRule::fast_is<CSSImportRule>() const { return type() == CSSRule::Type::Import; }
}