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LibWeb: Update HTMLScriptElement prepare and execute to latest HTML spec

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The net result is some nice simplification of the prepare algorithm
and a bit of initial scaffolding for import maps support.
This commit is contained in:
Andreas Kling 2022-11-20 17:12:17 +01:00
parent 7d45927d41
commit 1aac1085b3
2 changed files with 308 additions and 233 deletions
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24
Userland/Libraries/LibWeb/HTML/HTMLScriptElement.h
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@ -59,11 +59,21 @@ public:
virtual void visit_edges(Cell::Visitor&) override;
// https://html.spec.whatwg.org/multipage/scripting.html#prepare-the-script-element
void prepare_script();
void script_became_ready();
void when_the_script_is_ready(Function<void()>);
void begin_delaying_document_load_event(DOM::Document&);
struct ResultState {
struct Uninitialized { };
struct Null { };
};
using Result = Variant<ResultState::Uninitialized, ResultState::Null, JS::NonnullGCPtr<HTML::Script>>;
// https://html.spec.whatwg.org/multipage/scripting.html#mark-as-ready
void mark_as_ready(Result);
// https://html.spec.whatwg.org/multipage/scripting.html#parser-document
JS::GCPtr<DOM::Document> m_parser_document;
@ -87,18 +97,20 @@ public:
bool m_failed_to_load { false };
enum class ScriptType {
Null,
Classic,
Module
Module,
ImportMap,
};
// https://html.spec.whatwg.org/multipage/scripting.html#concept-script-type
ScriptType m_script_type { ScriptType::Classic };
ScriptType m_script_type { ScriptType::Null };
// https://html.spec.whatwg.org/multipage/scripting.html#steps-to-run-when-the-result-is-ready
Function<void()> m_script_ready_callback;
Function<void()> m_steps_to_run_when_the_result_is_ready;
// https://html.spec.whatwg.org/multipage/scripting.html#concept-script-result
JS::GCPtr<Script> m_script;
Result m_result { ResultState::Uninitialized {} };
// https://html.spec.whatwg.org/multipage/scripting.html#concept-script-delay-load
Optional<DOM::DocumentLoadEventDelayer> m_document_load_event_delayer;