mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 01:35:08 +02:00
b21a05d290
Previously, we fired the load event immediately, without waiting for anything. This was good for not timing out, but bad for anything that wanted to wait for the load to complete. CSSStyleSheet now maintains a list of critical subresources, and waits for all of them to complete before it then tells its owner that it is ready. "Complete" here means the network request completed with or without an error. This is done by having those subresources (just `@import` for now) notify their style sheet when they complete. This then propagates up as an `@import` tells its style sheet, which then would tell its parent `@import` if it had one. There are other subresources we should wait for (specifically fonts and background images) but this commit just adds `@import` as a first step.
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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* Copyright (c) 2021-2026, Sam Atkins <sam@ladybird.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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#pragma once
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#include <LibWeb/CSS/CSSRule.h>
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#include <LibWeb/CSS/CSSStyleSheet.h>
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#include <LibWeb/CSS/URL.h>
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#include <LibWeb/DOM/DocumentLoadEventDelayer.h>
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#include <LibWeb/Export.h>
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#include <LibWeb/Forward.h>
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namespace Web::CSS {
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class WEB_API CSSImportRule final
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: public CSSRule
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, public CSSStyleSheet::Subresource {
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WEB_PLATFORM_OBJECT(CSSImportRule, CSSRule);
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GC_DECLARE_ALLOCATOR(CSSImportRule);
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public:
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[[nodiscard]] static GC::Ref<CSSImportRule> create(JS::Realm&, URL, GC::Ptr<DOM::Document>, Optional<FlyString> layer, RefPtr<Supports>, GC::Ref<MediaList>);
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virtual ~CSSImportRule() override;
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URL const& url() const { return m_url; }
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String href() const { return m_url.url(); }
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CSSStyleSheet* loaded_style_sheet() { return m_style_sheet; }
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CSSStyleSheet const* loaded_style_sheet() const { return m_style_sheet; }
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GC::Ref<MediaList> media() const;
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CSSStyleSheet* style_sheet_for_bindings() { return m_style_sheet; }
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Optional<FlyString> layer_name() const;
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Optional<String> supports_text() const;
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bool matches() const;
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Optional<FlyString> internal_layer_name() const { return m_layer_internal; }
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Optional<FlyString> internal_qualified_layer_name(Badge<StyleScope>) const;
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private:
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CSSImportRule(JS::Realm&, URL, GC::Ptr<DOM::Document>, Optional<FlyString>, RefPtr<Supports>, GC::Ref<MediaList>);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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virtual void dump(StringBuilder&, int indent_levels) const override;
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virtual void set_parent_style_sheet(CSSStyleSheet*) override;
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virtual GC::Ptr<CSSStyleSheet> parent_style_sheet_for_subresource() override { return m_parent_style_sheet; }
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virtual String serialized() const override;
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void fetch();
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void set_style_sheet(GC::Ref<CSSStyleSheet>);
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URL m_url;
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GC::Ptr<DOM::Document> m_document;
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Optional<FlyString> m_layer;
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Optional<FlyString> m_layer_internal;
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RefPtr<Supports> m_supports;
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GC::Ref<MediaList> m_media;
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GC::Ptr<CSSStyleSheet> m_style_sheet;
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Optional<DOM::DocumentLoadEventDelayer> m_document_load_event_delayer;
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};
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template<>
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inline bool CSSRule::fast_is<CSSImportRule>() const { return type() == CSSRule::Type::Import; }
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}
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