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https://github.com/LadybirdBrowser/ladybird.git
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9340d2d1a3
Move the layout tree from GC allocation to refcounted ownership so removed layout and paint subtrees are destroyed synchronously instead of waiting for the next GC sweep. This dramatically reduces GC memory usage peaks after layout tree churn and makes it easier for memory use to fall back after large document updates. Update layout factories, tree traversal, SVG layout node creation, paintable back-pointers, and pseudo-element layout links to use RefPtr ownership. Make display: contents follow the same shape as Blink and WebKit: the element itself does not create a layout node, and its children are flattened into the nearest layout parent. Wrap direct non-whitespace text in an anonymous inline node when the boxless element contributes inherited style to that text. Use an internal inline wrapper for display: contents pseudo-elements so generated content can still participate in layout, painting, hit testing, and pseudo-element queries. Keep CSSOM reporting the computed display value from the pseudo style, not the internal wrapper. Remove the retained out-of-tree layout node list and its testing hook, since the flattened model does not need a side owner for boxless elements. Add coverage for inherited text style, dynamic insertion order, pseudo-element hit testing, and computed style queries.
69 lines
2 KiB
C++
69 lines
2 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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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/ARIA/Roles.h>
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#include <LibWeb/DOM/HTMLCollection.h>
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#include <LibWeb/HTML/HTMLElement.h>
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namespace Web::HTML {
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class HTMLFieldSetElement final
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: public HTMLElement {
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WEB_PLATFORM_OBJECT(HTMLFieldSetElement, HTMLElement);
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GC_DECLARE_ALLOCATOR(HTMLFieldSetElement);
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public:
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virtual ~HTMLFieldSetElement() override;
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String const& type() const
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{
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static String const& fieldset = *new String("fieldset"_string);
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return fieldset;
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}
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bool is_disabled() const;
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GC::Ptr<DOM::HTMLCollection> const& elements();
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// ^FormAssociatedElement
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virtual bool is_form_associated_element() const override { return true; }
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// ^FormAssociatedElement
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// https://html.spec.whatwg.org/multipage/forms.html#category-listed
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virtual bool is_listed() const override { return true; }
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// https://html.spec.whatwg.org/multipage/forms.html#category-autocapitalize
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virtual bool is_autocapitalize_and_autocorrect_inheriting() const override { return true; }
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virtual Optional<ARIA::Role> default_role() const override { return ARIA::Role::group; }
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virtual RefPtr<Layout::Node> create_layout_node(CSS::ComputedProperties const&) override;
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Layout::FieldSetBox* layout_node();
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Layout::FieldSetBox const* layout_node() const;
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private:
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HTMLFieldSetElement(DOM::Document&, DOM::QualifiedName);
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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 attribute_changed(FlyString const&, Optional<String> const&, Optional<String> const&, Optional<FlyString> const&) override;
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virtual bool is_html_fieldset_element() const override { return true; }
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GC::Ptr<DOM::HTMLCollection> m_elements;
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};
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}
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namespace Web::DOM {
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template<>
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inline bool Node::fast_is<HTML::HTMLFieldSetElement>() const { return is_html_fieldset_element(); }
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}
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