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7c06c3fd14
Move ComputedProperties and CascadedProperties out of the GC. They no longer contain strong references to GC-managed data. Keep computed styles alive from DOM elements and animation updates with RefPtr. Pass style into layout constructors by reference, since layout only copies the values it needs while building nodes. Use GC::Weak for cascade source links, so entries no longer keep the style declaration or shadow root alive.
71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/HTMLBRElement.h>
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#include <LibWeb/CSS/ComputedProperties.h>
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#include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
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#include <LibWeb/CSS/StyleValues/KeywordStyleValue.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/HTMLBRElement.h>
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#include <LibWeb/Layout/BreakNode.h>
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namespace Web::HTML {
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GC_DEFINE_ALLOCATOR(HTMLBRElement);
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HTMLBRElement::HTMLBRElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: HTMLElement(document, move(qualified_name))
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{
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}
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HTMLBRElement::~HTMLBRElement() = default;
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void HTMLBRElement::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLBRElement);
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Base::initialize(realm);
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}
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GC::Ptr<Layout::Node> HTMLBRElement::create_layout_node(CSS::ComputedProperties const& style)
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{
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return heap().allocate<Layout::BreakNode>(document(), *this, style);
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}
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bool HTMLBRElement::is_presentational_hint(FlyString const& name) const
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{
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if (Base::is_presentational_hint(name))
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return true;
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return name == HTML::AttributeNames::clear;
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}
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void HTMLBRElement::apply_presentational_hints(Vector<CSS::StyleProperty>& properties) const
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{
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Base::apply_presentational_hints(properties);
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for_each_attribute([&](auto& name, auto& value) {
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// https://html.spec.whatwg.org/multipage/rendering.html#phrasing-content-3
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if (name == HTML::AttributeNames::clear) {
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if (value.equals_ignoring_ascii_case("left"sv))
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properties.append({ .property_id = CSS::PropertyID::Clear, .value = CSS::KeywordStyleValue::create(CSS::Keyword::Left) });
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else if (value.equals_ignoring_ascii_case("right"sv))
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properties.append({ .property_id = CSS::PropertyID::Clear, .value = CSS::KeywordStyleValue::create(CSS::Keyword::Right) });
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else if (value.equals_ignoring_ascii_case("all"sv) || value.equals_ignoring_ascii_case("both"sv))
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properties.append({ .property_id = CSS::PropertyID::Clear, .value = CSS::KeywordStyleValue::create(CSS::Keyword::Both) });
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}
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});
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}
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void HTMLBRElement::adjust_computed_style(CSS::ComputedProperties& style)
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{
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// https://drafts.csswg.org/css-display-3/#unbox
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if (style.display().is_contents())
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style.set_property(CSS::PropertyID::Display, CSS::DisplayStyleValue::create(CSS::Display::from_short(CSS::Display::Short::None)));
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else if (!style.display().is_none())
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// AD-HOC: Prevent other display values from applying, so that we always create a BreakNode
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style.set_property(CSS::PropertyID::Display, CSS::DisplayStyleValue::create(CSS::Display::from_short(CSS::Display::Short::Inline)));
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}
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}
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