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LibWeb: Fix “step base” computation for HTMLInputElement

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This change fixes a bug in our implementation of the “step base”
algorithm at https://html.spec.whatwg.org/#concept-input-min-zero. We
were using the “value” IDL/DOM attribute in a particular step, where the
spec instead actually requires using the “value” content attribute.
This commit is contained in:
sideshowbarker 2025-03-05 03:38:20 +09:00 • committed by Tim Flynn
parent 9ca25eed7f
commit 13f9670f20
Notes: github-actions[bot] 2025-03-06 14:01:24 +00:00
4 changed files with 11 additions and 6 deletions
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8
Libraries/LibWeb/HTML/HTMLInputElement.cpp
View file

@ -2422,10 +2422,10 @@ double HTMLInputElement::step_base() const
// 2. If the element has a value content attribute, and the result of applying the algorithm to convert a string to a number to the value of
// the value content attribute is not an error, then return that result.
// AD-HOC: https://github.com/whatwg/html/issues/11097 Skipping this step seems to be necessary in order to get the
// behavior that's actually expected — and necessary in order get the tests to pass (they otherwise fail).
// if (auto value = convert_string_to_number(this->value()); value.has_value())
// return *value;
if (auto value = get_attribute(HTML::AttributeNames::value); value.has_value()) {
if (auto value_as_number = convert_string_to_number(value.value()); value_as_number.has_value())
return value_as_number.value();
}
// 3. If a default step base is defined for this element given its type attribute's state, then return it.
if (type_state() == TypeAttributeState::Week) {

6
Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/constraints/form-validation-checkValidity.txt
View file

@ -1,8 +1,8 @@
Harness status: OK
Found 130 tests
Found 132 tests
116 Pass
118 Pass
14 Fail
Pass [INPUT in TEXT status] no constraint
Pass [INPUT in TEXT status] no constraint (in a form)
@ -112,6 +112,8 @@ Fail [INPUT in NUMBER status] suffering from an underflow
Fail [INPUT in NUMBER status] suffering from an underflow (in a form)
Pass [INPUT in NUMBER status] suffering from a step mismatch
Pass [INPUT in NUMBER status] suffering from a step mismatch (in a form)
Pass [INPUT in NUMBER status] (with 'value' content attribute) suffering from a step mismatch
Pass [INPUT in NUMBER status] (with 'value' content attribute) suffering from a step mismatch (in a form)
Pass [INPUT in NUMBER status] suffering from being missing
Pass [INPUT in NUMBER status] suffering from being missing (in a form)
Pass [INPUT in CHECKBOX status] no constraint

1
Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/constraints/form-validation-checkValidity.html
View file

@ -104,6 +104,7 @@
{conditions: {max: "5", value: "6"}, expected: false, name: "[target] suffering from an overflow"},
{conditions: {min: "5", value: "4"}, expected: false, name: "[target] suffering from an underflow"},
{conditions: {step: 2 * 1 * 1, value: "3"}, expected: false, name: "[target] suffering from a step mismatch"},
{conditions: {step: 10, value: "20", content_value: "9"}, expected: false, name: "[target] (with 'value' content attribute) suffering from a step mismatch"},
{conditions: {required: true, value: ""}, expected: false, name: "[target] suffering from being missing"}
]
},

2
Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/constraints/support/validator.js
View file

@ -340,6 +340,8 @@ var validator = {
for (var attr in obj) {
if (attr === "message")
ctl.setCustomValidity(obj[attr]);
else if (attr === "content_value")
ctl.setAttribute("value", obj["content_value"])
else if (attr === "checked" || obj[attr] || obj[attr] === "")
ctl[attr] = obj[attr];
}