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LibWeb: Implement HTMLInputElement type=email constraint validation

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This change implements HTMLInputElement type=email constraint validation
in conformance with the current spec requirements (which happens to also
produce behavior that’s interoperable with other existing engines).
This commit is contained in:
sideshowbarker 2025-03-03 18:16:31 +09:00 • committed by Tim Ledbetter
parent 056205aa76
commit 7df9e00650
Notes: github-actions[bot] 2025-03-05 13:21:05 +00:00
3 changed files with 25 additions and 11 deletions
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19
Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@ -3042,6 +3042,9 @@ bool HTMLInputElement::suffering_from_being_missing() const
return false;
}
// https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address
static Regex<ECMA262> const valid_email_address_regex = Regex<ECMA262>("^[a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$");
// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#suffering-from-a-type-mismatch
bool HTMLInputElement::suffering_from_a_type_mismatch() const
{
@ -3056,8 +3059,20 @@ bool HTMLInputElement::suffering_from_a_type_mismatch() const
return !input.is_empty() && !URL::Parser::basic_parse(input).has_value();
case TypeAttributeState::Email:
// https://html.spec.whatwg.org/multipage/input.html#email-state-(type%3Demail)%3Asuffering-from-a-type-mismatch
// While the value of the element is neither the empty string nor a single valid email address, the element is suffering from a type mismatch.
// FIXME: Implement this.
// When the multiple attribute is not specified on the element: While the value of the element is neither the
// empty string nor a single valid email address, the element is suffering from a type mismatch.
if (!has_attribute(HTML::AttributeNames::multiple))
return !input.is_empty() && !valid_email_address_regex.match(input).success;
// When the multiple attribute is specified on the element: While the value of the element is not a valid email
// address list, the element is suffering from a type mismatch.
// https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address-list
// A valid email address list is a set of comma-separated tokens, where each token is itself a valid email
// address. To obtain the list of tokens from a valid email address list, an implementation must split the
// string on commas.
for (auto& address : MUST(input.split(','))) {
if (!valid_email_address_regex.match(address).success)
return true;
}
break;
default:
break;