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LibWeb: Implement HTMLMarqueeElement.scrollAmount

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Jamie Mansfield 2024-07-13 00:25:04 +01:00 • committed by Andreas Kling
parent 66528a17cb
commit 2a408ecfbc
Notes: sideshowbarker 2024-07-17 06:09:44 +09:00
4 changed files with 26 additions and 1 deletions
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19
Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2020, the SerenityOS developers.
* Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -9,6 +10,7 @@
#include <LibWeb/CSS/StyleProperties.h>
#include <LibWeb/CSS/StyleValues/ColorStyleValue.h>
#include <LibWeb/HTML/HTMLMarqueeElement.h>
#include <LibWeb/HTML/Numbers.h>
#include <LibWeb/HTML/Parser/HTMLParser.h>
namespace Web::HTML {
@ -41,4 +43,21 @@ void HTMLMarqueeElement::apply_presentational_hints(CSS::StyleProperties& style)
});
}
// https://html.spec.whatwg.org/multipage/obsolete.html#dom-marquee-scrollamount
WebIDL::UnsignedLong HTMLMarqueeElement::scroll_amount()
{
// The scrollAmount IDL attribute must reflect the scrollamount content attribute. The default value is 6.
if (auto scroll_amount_string = get_attribute(HTML::AttributeNames::scrollamount); scroll_amount_string.has_value()) {
if (auto scroll_amount = parse_non_negative_integer(*scroll_amount_string); scroll_amount.has_value())
return *scroll_amount;
}
return 6;
}
// https://html.spec.whatwg.org/multipage/obsolete.html#dom-marquee-scrollamount
WebIDL::ExceptionOr<void> HTMLMarqueeElement::set_scroll_amount(WebIDL::UnsignedLong value)
{
return set_attribute(HTML::AttributeNames::scrollamount, MUST(String::number(value)));
}
}