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https://github.com/LadybirdBrowser/ladybird.git
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f61df9d34c
We were unnecessarily discarding the shadow trees of various elements when they were removed or detached from the DOM. This especially caused a *lot* of churn when creating input elements via setting .innerHTML on something. We ended up building each input element's shadow tree 3 times instead of 1. The original issue that we were trying to solve by discarding shadow trees appears to have been solved elsewhere, and nothing else seems to break by just allowing them to remain in place. 1.05x speedup on Speedometer's TodoMVC-jQuery.
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
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* Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
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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/HTML/HTMLElement.h>
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namespace Web::HTML {
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class HTMLMeterElement final : public HTMLElement {
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WEB_PLATFORM_OBJECT(HTMLMeterElement, HTMLElement);
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GC_DECLARE_ALLOCATOR(HTMLMeterElement);
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public:
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virtual ~HTMLMeterElement() override;
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double value() const;
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WebIDL::ExceptionOr<void> set_value(double);
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double min() const;
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WebIDL::ExceptionOr<void> set_min(double value);
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double max() const;
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WebIDL::ExceptionOr<void> set_max(double value);
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double low() const;
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WebIDL::ExceptionOr<void> set_low(double value);
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double high() const;
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WebIDL::ExceptionOr<void> set_high(double value);
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double optimum() const;
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WebIDL::ExceptionOr<void> set_optimum(double value);
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// ^HTMLElement
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virtual void inserted() override;
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virtual void adjust_computed_style(CSS::ComputedProperties&) override;
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// https://html.spec.whatwg.org/multipage/forms.html#category-label
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virtual bool is_labelable() const override { return true; }
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// https://www.w3.org/TR/html-aria/#el-meter
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virtual Optional<ARIA::Role> default_role() const override { return ARIA::Role::meter; }
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enum class ValueState : u8 {
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Optimal,
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Suboptimal,
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EvenLessGood,
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};
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ValueState value_state() const { return m_cached_value_state; }
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private:
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HTMLMeterElement(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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void create_shadow_tree_if_needed();
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void update_meter_value_element();
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GC::Ptr<DOM::Element> m_meter_value_element;
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ValueState m_cached_value_state { ValueState::Optimal };
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};
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}
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