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LibWeb: Implement input color type sanitation algorithm

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This commit is contained in:
Kyle Lanmon 2022-12-03 23:10:45 -06:00 • committed by Linus Groh
parent a2cf026b30
commit 6fa34a4ee3
1 changed files with 24 additions and 0 deletions
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24
Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@ -466,6 +466,23 @@ void HTMLInputElement::set_type(DeprecatedString const& type)
MUST(set_attribute(HTML::AttributeNames::type, type));
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-simple-colour
static bool is_valid_simple_color(DeprecatedString const& value)
{
// if it is exactly seven characters long,
if (value.length() != 7)
return false;
// and the first character is a U+0023 NUMBER SIGN character (#),
if (!value.starts_with('#'))
return false;
// and the remaining six characters are all ASCII hex digits
for (size_t i = 1; i < value.length(); i++)
if (!is_ascii_hex_digit(value[i]))
return false;
return true;
}
// https://html.spec.whatwg.org/multipage/input.html#value-sanitization-algorithm
DeprecatedString HTMLInputElement::value_sanitization_algorithm(DeprecatedString value) const
{
@ -496,6 +513,13 @@ DeprecatedString HTMLInputElement::value_sanitization_algorithm(DeprecatedString
auto maybe_double = value.to_double(TrimWhitespace::Yes);
if (!maybe_double.has_value() || !isfinite(maybe_double.value()))
return "";
} else if (type_state() == HTMLInputElement::TypeAttributeState::Color) {
// https://html.spec.whatwg.org/multipage/input.html#color-state-(type=color):value-sanitization-algorithm
// If the value of the element is a valid simple color, then set it to the value of the element converted to ASCII lowercase;
if (is_valid_simple_color(value))
return value.to_lowercase();
// otherwise, set it to the string "#000000".
return "#000000";
}
// FIXME: Implement remaining value sanitation algorithms