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fix(material/core): remove tabindex from mat-option #26917

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Merged
merged 1 commit into from
Apr 14, 2023
Merged

fix(material/core): remove tabindex from mat-option #26917

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4 changes: 3 additions & 1 deletion src/material/core/option/option.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,9 @@ export class _MatOptionBase<T = any> implements FocusableOption, AfterViewChecke
}

/** Returns the correct tabindex for the option depending on disabled state. */
// This method is only used by `MatLegacyOption`. Keeping it here to avoid breaking the types.
// That's because `MatLegacyOption` use `MatOption` type in a few places such as
// `MatOptionSelectionChange`. It is safe to delete this when `MatLegacyOption` is deleted.
_getTabIndex(): string {
return this.disabled ? '-1' : '0';
}
Expand Down Expand Up @@ -251,7 +254,6 @@ export class _MatOptionBase<T = any> implements FocusableOption, AfterViewChecke
exportAs: 'matOption',
host: {
'role': 'option',
'[attr.tabindex]': '_getTabIndex()',
'[class.mdc-list-item--selected]': 'selected',
'[class.mat-mdc-option-multiple]': 'multiple',
'[class.mat-mdc-option-active]': 'active',
Expand Down
28 changes: 19 additions & 9 deletions src/material/select/select.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -824,17 +824,27 @@ describe('MDC-based MatSelect', () => {
'mat-option',
) as NodeListOf<HTMLElement>;

options[3].focus();
select.focus();
multiFixture.detectChanges();
multiFixture.componentInstance.select._keyManager.setActiveItem(3);
multiFixture.detectChanges();

expect(document.activeElement)
.withContext('Expected fourth option to be focused.')
.toBe(options[3]);
.withContext('Expected select to have DOM focus.')
.toBe(select);
expect(select.getAttribute('aria-activedescendant'))
.withContext('Expected fourth option to be activated.')
.toBe(options[3].id);

multiFixture.componentInstance.control.setValue(['steak-0', 'sushi-7']);
multiFixture.detectChanges();

expect(document.activeElement)
.withContext('Expected fourth option to remain focused.')
.toBe(options[3]);
.withContext('Expected select to have DOM focus.')
.toBe(select);
expect(select.getAttribute('aria-activedescendant'))
.withContext('Expected fourth optino to remain activated.')
.toBe(options[3].id);
}),
);

Expand Down Expand Up @@ -1260,10 +1270,10 @@ describe('MDC-based MatSelect', () => {
.toBe(true);
}));

it('should set the tabindex of each option according to disabled state', fakeAsync(() => {
expect(options[0].getAttribute('tabindex')).toEqual('0');
expect(options[1].getAttribute('tabindex')).toEqual('0');
expect(options[2].getAttribute('tabindex')).toEqual('-1');
it('should omit the tabindex attribute on each option', fakeAsync(() => {
expect(options[0].hasAttribute('tabindex')).toBeFalse();
expect(options[1].hasAttribute('tabindex')).toBeFalse();
expect(options[2].hasAttribute('tabindex')).toBeFalse();
}));

it('should set aria-disabled for disabled options', fakeAsync(() => {
Expand Down