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LibWeb: Add basic parse floating point number function

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Bastiaan van der Plaat 2023-11-15 19:54:01 +01:00 • committed by Sam Atkins
parent 3175557cb8
commit 761d824b72
Notes: sideshowbarker 2024-07-18 00:41:35 +09:00
5 changed files with 42 additions and 32 deletions
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37
Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp
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@ -8,6 +8,7 @@
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/ShadowRoot.h>
#include <LibWeb/HTML/HTMLProgressElement.h>
#include <LibWeb/HTML/Numbers.h>
#include <LibWeb/Layout/BlockContainer.h>
#include <LibWeb/Layout/Node.h>
#include <LibWeb/Layout/Progress.h>
@ -51,26 +52,21 @@ void HTMLProgressElement::progress_position_updated()
document().invalidate_layout();
}
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-progress-value
double HTMLProgressElement::value() const
{
auto const& value_characters = deprecated_attribute(HTML::AttributeNames::value);
if (value_characters == nullptr)
auto maybe_value_string = get_attribute(HTML::AttributeNames::value);
if (!maybe_value_string.has_value())
return 0;
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#rules-for-parsing-floating-point-number-values
// 6. Skip ASCII whitespace within input given position.
auto maybe_double = value_characters.to_double(AK::TrimWhitespace::Yes);
if (!maybe_double.has_value())
auto maybe_value = parse_floating_point_number(maybe_value_string.value());
if (!maybe_value.has_value())
return 0;
if (!isfinite(maybe_double.value()) || maybe_double.value() < 0)
return 0;
return min(maybe_double.value(), max());
return clamp(maybe_value.value(), 0, max());
}
WebIDL::ExceptionOr<void> HTMLProgressElement::set_value(double value)
{
if (value < 0)
if (value < 0 || value > max())
return {};
TRY(set_attribute(HTML::AttributeNames::value, MUST(String::number(value))));
@ -78,21 +74,16 @@ WebIDL::ExceptionOr<void> HTMLProgressElement::set_value(double value)
return {};
}
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-progress-max
double HTMLProgressElement::max() const
{
auto const& max_characters = deprecated_attribute(HTML::AttributeNames::max);
if (max_characters == nullptr)
auto maybe_max_string = get_attribute(HTML::AttributeNames::max);
if (!maybe_max_string.has_value())
return 1;
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#rules-for-parsing-floating-point-number-values
// 6. Skip ASCII whitespace within input given position.
auto double_or_none = max_characters.to_double(AK::TrimWhitespace::Yes);
if (!double_or_none.has_value())
auto maybe_max = parse_floating_point_number(maybe_max_string.value());
if (!maybe_max.has_value())
return 1;
if (!isfinite(double_or_none.value()) || double_or_none.value() <= 0)
return 1;
return double_or_none.value();
return AK::max(maybe_max.value(), 0);
}
WebIDL::ExceptionOr<void> HTMLProgressElement::set_max(double value)