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LibWeb: Compute display: contents as none for unusual elements

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https://drafts.csswg.org/css-display-3/#unbox-html specifies certain
elements that have their `display` style computed as `none` when
specified as `contents`.

This fixes at least one WPT test:
http://wpt.live/css/css-display/display-contents-suppression-dynamic-001.html
This commit is contained in:
Michael Watt
2024-11-08 20:14:37 +08:00
committed by Andreas Kling
parent eef9a53eec
commit 3b1d1d4582
31 changed files with 156 additions and 0 deletions
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8
Libraries/LibWeb/HTML/HTMLObjectElement.cpp
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@@ -8,6 +8,7 @@
#include <LibWeb/Bindings/HTMLObjectElementPrototype.h>
#include <LibWeb/CSS/StyleComputer.h>
#include <LibWeb/CSS/StyleValues/CSSKeywordValue.h>
#include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/DocumentLoading.h>
@@ -155,6 +156,13 @@ JS::GCPtr<Layout::Node> HTMLObjectElement::create_layout_node(CSS::StyleProperti
return nullptr;
}
void HTMLObjectElement::adjust_computed_style(CSS::StyleProperties& style)
{
// https://drafts.csswg.org/css-display-3/#unbox
if (style.display().is_contents())
style.set_property(CSS::PropertyID::Display, CSS::DisplayStyleValue::create(CSS::Display::from_short(CSS::Display::Short::None)));
}
bool HTMLObjectElement::has_ancestor_media_element_or_object_element_not_showing_fallback_content() const
{
for (auto const* ancestor = parent(); ancestor; ancestor = ancestor->parent()) {