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fix(tabs): tab position and amount of tabs not being read out by screen reader #11694

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Merged
merged 1 commit into from
Jun 7, 2018
Merged

fix(tabs): tab position and amount of tabs not being read out by screen reader #11694

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2 changes: 2 additions & 0 deletions src/lib/tabs/tab-group.html
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@
*ngFor="let tab of _tabs; let i = index"
[id]="_getTabLabelId(i)"
[attr.tabIndex]="_getTabIndex(tab, i)"
[attr.aria-posinset]="i + 1"
[attr.aria-setsize]="_tabs.length"
[attr.aria-controls]="_getTabContentId(i)"
[attr.aria-selected]="selectedIndex == i"
[class.mat-tab-label-active]="selectedIndex == i"
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10 changes: 10 additions & 0 deletions src/lib/tabs/tab-group.spec.ts
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Expand Up @@ -221,6 +221,16 @@ describe('MatTabGroup', () => {

expect(fixture.componentInstance.animationDone).toHaveBeenCalled();
}));

it('should add the proper `aria-setsize` and `aria-posinset`', () => {
fixture.detectChanges();

const labels = Array.from(element.querySelectorAll('.mat-tab-label'));

expect(labels.map(label => label.getAttribute('aria-posinset'))).toEqual(['1', '2', '3']);
expect(labels.every(label => label.getAttribute('aria-setsize') === '3')).toBe(true);
});

});

describe('disable tabs', () => {
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