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LibWeb: Implement HTMLAllCollection

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This collection has some pretty strange behaviour, particularly with the
IsHTMLDDA slot which is defined in the javascript spec specifically for
this object.

This commit implements pretty much all of this interface, besides from
the custom [[Call]].

There is also no caching over this collection. Since it is a live
collection over the entire document, the performance is never going to
be great, and I am not convinced any speedup for this legacy interface
is worth a massive cache.
This commit is contained in:
Shannon Booth 2024-04-01 08:44:24 +02:00 • committed by Andreas Kling
commit 1f59e21829
Notes: sideshowbarker 2024-07-16 18:03:21 +09:00
6 changed files with 312 additions and 0 deletions
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63
Userland/Libraries/LibWeb/HTML/HTMLAllCollection.h Normal file
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/*
* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <LibJS/Forward.h>
#include <LibJS/Heap/GCPtr.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/DOM/HTMLCollection.h>
#include <LibWeb/Forward.h>
namespace Web::HTML {
// FIXME: Should be part of HTML namespace!
class HTMLAllCollection : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(HTMLAllCollection, Bindings::PlatformObject);
JS_DECLARE_ALLOCATOR(HTMLAllCollection);
public:
enum class Scope {
Children,
Descendants,
};
[[nodiscard]] static JS::NonnullGCPtr<HTMLAllCollection> create(DOM::ParentNode& root, Scope, Function<bool(DOM::Element const&)> filter);
virtual ~HTMLAllCollection() override;
size_t length() const;
Variant<JS::NonnullGCPtr<DOM::HTMLCollection>, JS::NonnullGCPtr<DOM::Element>, Empty> item(Optional<FlyString> const& name_or_index) const;
Variant<JS::NonnullGCPtr<DOM::HTMLCollection>, JS::NonnullGCPtr<DOM::Element>, Empty> named_item(FlyString const& name) const;
JS::MarkedVector<JS::NonnullGCPtr<DOM::Element>> collect_matching_elements() const;
virtual WebIDL::ExceptionOr<JS::Value> item_value(size_t index) const override;
virtual WebIDL::ExceptionOr<JS::Value> named_item_value(FlyString const& name) const override;
virtual Vector<FlyString> supported_property_names() const override;
virtual bool is_supported_property_index(u32) const override;
protected:
HTMLAllCollection(DOM::ParentNode& root, Scope, Function<bool(DOM::Element const&)> filter);
virtual void initialize(JS::Realm&) override;
virtual bool is_htmldda() const override { return true; }
private:
Variant<JS::NonnullGCPtr<DOM::HTMLCollection>, JS::NonnullGCPtr<DOM::Element>, Empty> get_the_all_named_elements(FlyString const& name) const;
JS::GCPtr<DOM::Element> get_the_all_indexed_element(u32 index) const;
Variant<JS::NonnullGCPtr<DOM::HTMLCollection>, JS::NonnullGCPtr<DOM::Element>, Empty> get_the_all_indexed_or_named_elements(JS::PropertyKey const& name_or_index) const;
virtual void visit_edges(Cell::Visitor&) override;
JS::NonnullGCPtr<DOM::ParentNode> m_root;
Function<bool(DOM::Element const&)> m_filter;
Scope m_scope { Scope::Descendants };
};
}