ladybird/Libraries/LibWeb/HTML/HTMLHtmlElement.cpp
Andreas Kling a6dfc74e93 LibWeb: Only set prototype once for object with IDL interface
Before this change, we were going through the chain of base classes for
each IDL interface object and having them set the prototype to their
prototype.

Instead of doing that, reorder things so that we set the right prototype
immediately in Foo::initialize(), and then don't bother in all the base
class overrides.

This knocks off a ~1% profile item on Speedometer 3.
2025-04-20 18:43:11 +02:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/HTMLHtmlElementPrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/ComputedProperties.h>
#include <LibWeb/HTML/HTMLBodyElement.h>
#include <LibWeb/HTML/HTMLHtmlElement.h>
#include <LibWeb/Layout/Node.h>
namespace Web::HTML {
GC_DEFINE_ALLOCATOR(HTMLHtmlElement);
HTMLHtmlElement::HTMLHtmlElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: HTMLElement(document, move(qualified_name))
{
}
HTMLHtmlElement::~HTMLHtmlElement() = default;
void HTMLHtmlElement::initialize(JS::Realm& realm)
{
WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLHtmlElement);
Base::initialize(realm);
}
bool HTMLHtmlElement::should_use_body_background_properties() const
{
// https://drafts.csswg.org/css-contain-2/#contain-property
// Additionally, when any containments are active on either the HTML <html> or <body> elements, propagation of
// properties from the <body> element to the initial containing block, the viewport, or the canvas background, is
// disabled. Notably, this affects:
// - 'background' and its longhands (see CSS Backgrounds 3 §2.11.2 The Canvas Background and the HTML <body> Element)
if (!computed_properties()->contain().is_empty())
return false;
auto* body_element = first_child_of_type<HTML::HTMLBodyElement>();
if (body_element && !body_element->computed_properties()->contain().is_empty())
return false;
auto background_color = layout_node()->computed_values().background_color();
auto const& background_layers = layout_node()->background_layers();
for (auto& layer : background_layers) {
if (layer.background_image)
return false;
}
return (background_color == Color::Transparent);
}
}