<!DOCTYPE html>
<title>Form validation features of ElementInternals, and :valid :invalid pseudo classes</title>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="container"></div>
<script>
class MyControl extends HTMLElement {
static get formAssociated() { return true; }
constructor() {
super();
this.internals_ = this.attachInternals();
}
get i() { return this.internals_; }
}
customElements.define('my-control', MyControl);
class NotFormAssociatedElement extends HTMLElement {
constructor() {
super();
this.internals_ = this.attachInternals();
}
get i() { return this.internals_; }
}
customElements.define('not-form-associated-element', NotFormAssociatedElement);
test(() => {
const control = new MyControl();
assert_true(control.i.willValidate, 'default value is true');
const datalist = document.createElement('datalist');
datalist.appendChild(control);
assert_false(control.i.willValidate, 'false in DATALIST');
datalist.removeChild(control);
assert_true(control.i.willValidate, 'remove from DATALIST');
const fieldset = document.createElement('fieldset');
fieldset.disabled = true;
fieldset.appendChild(control);
assert_false(control.i.willValidate, 'append to disabled FIELDSET');
fieldset.disabled = false;
assert_true(control.i.willValidate, 'FIELDSET becomes enabled');
fieldset.disabled = true;
assert_false(control.i.willValidate, 'FIELDSET becomes disabled');
fieldset.removeChild(control);
assert_true(control.i.willValidate, 'remove from disabled FIELDSET');
control.setAttribute('disabled', '');
assert_false(control.i.willValidate, 'with disabled attribute');
control.removeAttribute('disabled');
assert_true(control.i.willValidate, 'without disabled attribute');
control.setAttribute('readonly', '');
assert_false(control.i.willValidate, 'with readonly attribute');
control.removeAttribute('readonly');
assert_true(control.i.willValidate, 'without readonly attribute');
}, 'willValidate');
test(() => {
const container = document.getElementById("container");
container.innerHTML = '<will-be-defined></will-be-defined>' +
'<will-be-defined disabled></will-be-defined>' +
'<will-be-defined readonly></will-be-defined>' +
'<datalist><will-be-defined></will-be-defined></datalist>' +
'<fieldset disabled><will-be-defined></will-be-defined></fieldset>';
class WillBeDefined extends HTMLElement {
static get formAssociated() { return true; }
constructor() {
super();
this.internals_ = this.attachInternals();
}
get i() { return this.internals_; }
}
customElements.define('will-be-defined', WillBeDefined);
customElements.upgrade(container);
const controls = document.querySelectorAll('will-be-defined');
assert_true(controls[0].i.willValidate, 'default value');
assert_false(controls[1].i.willValidate, 'with disabled attribute');
assert_false(controls[2].i.willValidate, 'with readOnly attribute');
assert_false(controls[3].i.willValidate, 'in datalist');
assert_false(controls[4].i.willValidate, 'in disabled fieldset');
}, 'willValidate after upgrade');
test(t => {
const control = document.createElement('will-be-defined-2');
customElements.define('will-be-defined-2', class extends HTMLElement {
static get formAssociated() { return true; }
});
container.append(control);
t.add_cleanup(() => { container.innerHTML = ''; });
const i = control.attachInternals();
assert_true(i.willValidate);
}, 'willValidate after upgrade (document.createElement)');
test(() => {
const element = new NotFormAssociatedElement();
assert_throws_dom('NotSupportedError', () => element.i.willValidate);
}, "willValidate should throw NotSupportedError if the target element is not a form-associated custom element");
test(() => {
const control = document.createElement('my-control');
const validity = control.i.validity;
assert_false(validity.valueMissing, 'default valueMissing');
assert_false(validity.typeMismatch, 'default typeMismatch');
assert_false(validity.patternMismatch, 'default patternMismatch');
assert_false(validity.tooLong, 'default tooLong');
assert_false(validity.tooShort, 'default tooShort');
assert_false(validity.rangeUnderflow, 'default rangeUnderflow');
assert_false(validity.rangeOverflow, 'default rangeOverflow');
assert_false(validity.stepMismatch, 'default stepMismatch');
assert_false(validity.badInput, 'default badInput');
assert_false(validity.customError, 'default customError');
assert_true(validity.valid, 'default valid');
control.i.setValidity({valueMissing: true}, 'valueMissing message');
assert_true(validity.valueMissing);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'valueMissing message');
control.i.setValidity({typeMismatch: true}, 'typeMismatch message');
assert_true(validity.typeMismatch);
assert_false(validity.valueMissing);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'typeMismatch message');
control.i.setValidity({patternMismatch: true}, 'patternMismatch message');
assert_true(validity.patternMismatch);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'patternMismatch message');
control.i.setValidity({tooLong: true}, 'tooLong message');
assert_true(validity.tooLong);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'tooLong message');
control.i.setValidity({tooShort: true}, 'tooShort message');
assert_true(validity.tooShort);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'tooShort message');
control.i.setValidity({rangeUnderflow: true}, 'rangeUnderflow message');
assert_true(validity.rangeUnderflow);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'rangeUnderflow message');
control.i.setValidity({rangeOverflow: true}, 'rangeOverflow message');
assert_true(validity.rangeOverflow);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'rangeOverflow message');
control.i.setValidity({stepMismatch: true}, 'stepMismatch message');
assert_true(validity.stepMismatch);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'stepMismatch message');
control.i.setValidity({badInput: true}, 'badInput message');
assert_true(validity.badInput);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'badInput message');
control.i.setValidity({customError: true}, 'customError message');
assert_true(validity.customError, 'customError should be true.');
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'customError message');
// Set multiple flags
control.i.setValidity({badInput: true, customError: true}, 'multiple errors');
assert_true(validity.badInput);
assert_true(validity.customError);
assert_false(validity.valid);
assert_equals(control.i.validationMessage, 'multiple errors');
// Clear flags
control.i.setValidity({}, 'unnecessary message');
assert_false(validity.badInput);
assert_false(validity.customError);
assert_true(validity.valid);
assert_equals(control.i.validationMessage, '');
assert_throws_js(TypeError, () => { control.i.setValidity({valueMissing: true}); },
'setValidity() requires the second argument if the first argument contains true');
}, 'validity and setValidity()');
test(() => {
document.body.insertAdjacentHTML('afterbegin', '<my-control><light-child></my-control>');
let control = document.body.firstChild;
const flags = {valueMissing: true};
const m = 'non-empty message';
assert_throws_dom('NotFoundError', () => {
control.i.setValidity(flags, m, document.body);
}, 'Not a descendant');
assert_throws_dom('NotFoundError', () => {
control.i.setValidity(flags, m, control);
}, 'Self');
let notHTMLElement = document.createElementNS('some-random-namespace', 'foo');
control.appendChild(notHTMLElement);
assert_throws_js(TypeError, () => {
control.i.setValidity(flags, m, notHTMLElement);
}, 'Not a HTMLElement');
notHTMLElement.remove();
// A descendant
control.i.setValidity(flags, m, control.querySelector('light-child'));
// An element in the direct shadow tree
let shadow1 = control.attachShadow({mode: 'open'});
let shadowChild = document.createElement('div');
shadow1.appendChild(shadowChild);
control.i.setValidity(flags, m, shadowChild);
// An element in an nested shadow trees
let shadow2 = shadowChild.attachShadow({mode: 'closed'});
let nestedShadowChild = document.createElement('span');
shadow2.appendChild(nestedShadowChild);
control.i.setValidity(flags, m, nestedShadowChild);
}, '"anchor" argument of setValidity()');
test(() => {
const element = new NotFormAssociatedElement();
assert_throws_dom('NotSupportedError', () => element.i.checkValidity());
}, "checkValidity() should throw NotSupportedError if the target element is not a form-associated custom element");
test(() => {
const control = document.createElement('my-control');
let invalidCount = 0;
control.addEventListener('invalid', e => {
assert_equals(e.target, control);
assert_true(e.cancelable);
++invalidCount;
});
assert_true(control.i.checkValidity(), 'default state');
assert_equals(invalidCount, 0);
control.i.setValidity({customError:true}, 'foo');
assert_false(control.i.checkValidity());
assert_equals(invalidCount, 1);
}, 'checkValidity()');
test(() => {
const element = new NotFormAssociatedElement();
assert_throws_dom('NotSupportedError', () => element.i.reportValidity());
}, "reportValidity() should throw NotSupportedError if the target element is not a form-associated custom element");
test(() => {
const control = document.createElement('my-control');
document.body.appendChild(control);
control.tabIndex = 0;
let invalidCount = 0;
control.addEventListener('invalid', e => {
assert_equals(e.target, control);
assert_true(e.cancelable);
++invalidCount;
});
assert_true(control.i.reportValidity(), 'default state');
assert_equals(invalidCount, 0);
control.i.setValidity({customError:true}, 'foo');
assert_false(control.i.reportValidity());
assert_equals(invalidCount, 1);
control.blur();
control.addEventListener('invalid', e => e.preventDefault());
assert_false(control.i.reportValidity());
}, 'reportValidity()');
test(() => {
const container = document.getElementById('container');
container.innerHTML = '<form><input type=submit><my-control>';
const form = container.querySelector('form');
const control = container.querySelector('my-control');
control.tabIndex = 0;
let invalidCount = 0;
control.addEventListener('invalid', e => { ++invalidCount; });
assert_true(control.i.checkValidity());
assert_true(form.checkValidity());
control.i.setValidity({valueMissing: true}, 'Please fill out this field');
assert_false(form.checkValidity());
assert_equals(invalidCount, 1);
assert_false(form.reportValidity());
assert_equals(invalidCount, 2);
container.querySelector('input[type=submit]').click();
assert_equals(invalidCount, 3);
}, 'Custom control affects validation at the owner form');
function isValidAccordingToCSS(element, comment) {
assert_true(element.matches(':valid'), comment ? (comment + ' - :valid') : undefined);
assert_false(element.matches(':invalid'), comment ? (comment + ' - :invalid') : undefined);
}
function isInvalidAccordingToCSS(element, comment) {
assert_false(element.matches(':valid'), comment ? (comment + ' - :valid') : undefined);
assert_true(element.matches(':invalid'), comment ? (comment + ' - :invalid') : undefined);
}
test(() => {
const container = document.getElementById('container');
container.innerHTML = '<form><fieldset><my-control>';
const form = container.querySelector('form');
const fieldset = container.querySelector('fieldset');
const control = container.querySelector('my-control');
isValidAccordingToCSS(control);
isValidAccordingToCSS(form);
isValidAccordingToCSS(fieldset);
control.i.setValidity({typeMismatch: true}, 'Invalid format');
isInvalidAccordingToCSS(control);
isInvalidAccordingToCSS(form);
isInvalidAccordingToCSS(fieldset);
control.remove();
isInvalidAccordingToCSS(control);
isValidAccordingToCSS(form);
isValidAccordingToCSS(fieldset);
fieldset.appendChild(control);
isInvalidAccordingToCSS(form);
isInvalidAccordingToCSS(fieldset);
control.i.setValidity({});
isValidAccordingToCSS(control);
isValidAccordingToCSS(form);
isValidAccordingToCSS(fieldset);
}, 'Custom control affects :valid :invalid for FORM and FIELDSET');
</script>
</body>
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