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LibWeb: Support CSS modules

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This adds support for importing CSS stylesheets from CSS files in
javascript.
This commit is contained in:
Glenn Skrzypczak 2025-10-26 18:06:19 +01:00 • committed by Shannon Booth
parent 2362a65e3b
commit f1d3244b22
Notes: github-actions[bot] 2026-04-03 19:22:27 +00:00
21 changed files with 272 additions and 80 deletions
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41
Libraries/LibWeb/HTML/Scripting/ModuleScript.h
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@ -7,6 +7,7 @@
#pragma once
#include <LibJS/SourceTextModule.h>
#include <LibJS/SyntheticModule.h>
#include <LibWeb/Export.h>
#include <LibWeb/HTML/Scripting/Script.h>
@ -18,29 +19,21 @@ struct ParsedProgram;
namespace Web::HTML {
// FIXME: Support WebAssembly Module Record
using ModuleScriptRecord = Variant<Empty, GC::Ref<JS::SourceTextModule>, GC::Ref<JS::SyntheticModule>>;
// https://html.spec.whatwg.org/multipage/webappapis.html#module-script
class ModuleScript : public Script {
class WEB_API ModuleScript : public Script {
GC_CELL(ModuleScript, Script);
GC_DECLARE_ALLOCATOR(ModuleScript);
public:
virtual ~ModuleScript() override;
protected:
ModuleScript(URL::URL base_url, ByteString filename, JS::Realm&);
private:
virtual bool is_module_script() const final { return true; }
};
class WEB_API JavaScriptModuleScript final : public ModuleScript {
GC_CELL(JavaScriptModuleScript, ModuleScript);
GC_DECLARE_ALLOCATOR(JavaScriptModuleScript);
public:
virtual ~JavaScriptModuleScript() override;
static WebIDL::ExceptionOr<GC::Ptr<JavaScriptModuleScript>> create(ByteString const& filename, StringView source, JS::Realm&, URL::URL base_url);
static WebIDL::ExceptionOr<GC::Ptr<JavaScriptModuleScript>> create_from_pre_parsed(ByteString const& filename, NonnullRefPtr<JS::SourceCode const> source_code, JS::Realm&, URL::URL base_url, JS::FFI::ParsedProgram* parsed);
static WebIDL::ExceptionOr<GC::Ptr<ModuleScript>> create(ByteString const& filename, StringView source, JS::Realm&, URL::URL base_url);
static WebIDL::ExceptionOr<GC::Ptr<ModuleScript>> create_from_pre_parsed(ByteString const& filename, NonnullRefPtr<JS::SourceCode const> source_code, JS::Realm&, URL::URL base_url, JS::FFI::ParsedProgram* parsed);
static WebIDL::ExceptionOr<GC::Ptr<ModuleScript>> create_a_javascript_module_script(ByteString const& filename, StringView source, JS::Realm&, URL::URL base_url);
static WebIDL::ExceptionOr<GC::Ptr<ModuleScript>> create_a_css_module_script(ByteString const& filename, StringView source, JS::Realm&);
enum class PreventErrorReporting {
Yes,
@ -49,28 +42,24 @@ public:
JS::Promise* run(PreventErrorReporting = PreventErrorReporting::No);
JS::SourceTextModule const* record() const { return m_record.ptr(); }
JS::SourceTextModule* record() { return m_record.ptr(); }
ModuleScriptRecord record() const { return m_record; }
protected:
JavaScriptModuleScript(URL::URL base_url, ByteString filename, JS::Realm&);
ModuleScript(Optional<URL::URL> base_url, ByteString filename, JS::Realm&);
private:
virtual bool is_javascript_module_script() const final { return true; }
virtual bool is_module_script() const final { return true; }
virtual void visit_edges(JS::Cell::Visitor&) override;
GC::Ptr<JS::SourceTextModule> m_record;
ModuleScriptRecord m_record;
size_t m_fetch_internal_request_count { 0 };
size_t m_completed_fetch_internal_request_count { 0 };
Function<void(JavaScriptModuleScript const*)> m_completed_fetch_internal_callback;
Function<void(ModuleScript const*)> m_completed_fetch_internal_callback;
};
}
template<>
inline bool JS::Script::HostDefined::fast_is<Web::HTML::ModuleScript>() const { return is_module_script(); }
template<>
inline bool JS::Script::HostDefined::fast_is<Web::HTML::JavaScriptModuleScript>() const { return is_javascript_module_script(); }