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54 lines
2.4 KiB
C++
54 lines
2.4 KiB
C++
/*
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* Copyright (c) 2023, Luke Wilde <lukew@serenityos.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 <AK/RefCounted.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/HTML/CustomElements/CustomElementDefinition.h>
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namespace Web::HTML {
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struct ElementDefinitionOptions {
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Optional<String> extends;
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};
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// https://html.spec.whatwg.org/multipage/custom-elements.html#customelementregistry
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class CustomElementRegistry : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(CustomElementRegistry, Bindings::PlatformObject);
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JS_DECLARE_ALLOCATOR(CustomElementRegistry);
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public:
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virtual ~CustomElementRegistry() override;
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JS::ThrowCompletionOr<void> define(String const& name, WebIDL::CallbackType* constructor, ElementDefinitionOptions options);
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Variant<JS::Handle<WebIDL::CallbackType>, JS::Value> get(String const& name) const;
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::Promise>> when_defined(String const& name);
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void upgrade(JS::NonnullGCPtr<DOM::Node> root) const;
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JS::GCPtr<CustomElementDefinition> get_definition_with_name_and_local_name(String const& name, String const& local_name) const;
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JS::GCPtr<CustomElementDefinition> get_definition_from_new_target(JS::FunctionObject const& new_target) const;
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private:
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CustomElementRegistry(JS::Realm&);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Visitor&) override;
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// Every CustomElementRegistry has a set of custom element definitions, initially empty. In general, algorithms in this specification look up elements in the registry by any of name, local name, or constructor.
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Vector<JS::NonnullGCPtr<CustomElementDefinition>> m_custom_element_definitions;
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// https://html.spec.whatwg.org/multipage/custom-elements.html#element-definition-is-running
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// Every CustomElementRegistry also has an element definition is running flag which is used to prevent reentrant invocations of element definition. It is initially unset.
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bool m_element_definition_is_running { false };
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// https://html.spec.whatwg.org/multipage/custom-elements.html#when-defined-promise-map
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// Every CustomElementRegistry also has a when-defined promise map, mapping valid custom element names to promises. It is used to implement the whenDefined() method.
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OrderedHashMap<String, JS::NonnullGCPtr<JS::Promise>> m_when_defined_promise_map;
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};
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}
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