angular / angular/components

bug(mat-select): Focus trap not working as expected in mobile

Ouverte
#25,756 3 commentaires 0 réactions 0 personnes assignées Voir sur GitHub
area: material/select ios P2
Langage dominant
TypeScript
Étoiles
25k
Forks
6.8k
Merge moyen
1 j 8 h
PR mergées (30 j)
91

Description

### Is this a regression?

- [ ] Yes, this behavior used to work in the previous version

### The previous version in which this bug was not present was

_No response_

### Description

When using a screen reader on mobile device such as Voice Over in iOS,
1) on the double tap of the mat-select control, the focus stays on the control instead of focusing on the selected or first element in the panel. Until we manually tab inside the panel. _Please see the attached video 1_.

2) When the focus is inside the panel, on the first option and we swipe backwards (swipe to left), the focus goes to the last element on the page (last element on the footer of the host page). _Please see the attached video 2_.

Though I only documented iOS here, the issue also exists on Android (tested with Pixel 2 + Android 11). In Android swiping in either direction, left when on the first option and right when on the last option, will cause the focus to leave the panel and enter the content behind while the panel is still open.

Video 1:
https://user-images.githubusercontent.com/13901527/193904148-52b7e842-25e5-44d6-835a-83aeaeecec7b.MOV

Video 2:
https://user-images.githubusercontent.com/13901527/193904171-b5c59c89-8e8e-4c63-8bc2-b56db659f993.MOV

### Reproduction

Steps to reproduce:
1. On an iOS Phone, open Safari and visit [https://material.angular.io/components/select/examples](https://material.angular.io/components/select/examples)
2. Turn on Voice Over
3. Use swipes, tab and double tab to interact with one of the mat-select controls and its options panel.

### Expected Behavior

1) With Voice Over turned on, On double tab of the mat-select control, after the drop down panel opens, the selected option or the first option must have being focused.

2) With Voice Over turned on and dropdown panel open, while swaping backwards, the focus must not go into the background content. Focus must either stay in the panel or go to the Safari toolbar (refresh button, back button, etc...).

### Actual Behavior

1) Focus stays on the mat-select control even though the panel has opened.

2) Focus leaves the panel and enters other page content while the panel is still open.

### Environment

- Angular: 14.2.3
- CDK/Material: Mat-Select
- Browser(s): Safari
- Operating System (e.g. Windows, macOS, Ubuntu): iOS 15.7 and iOS 15.6.1

Guide de contribution

Ouvrir le guide de contribution

Piste de recherche

Commencez par reproduire le problème dans les exemples de mat-select à l’adresse material.angular.io/components/select/examples avec VoiceOver sur iOS, puis comparez le comportement signalé sur Android. Le travail est terminé lorsque l’ouverture du panneau déplace le focus vers l’option sélectionnée ou la première option, et qu’un balayage à l’une ou l’autre des limites ne déplace pas le focus vers le contenu d’arrière-plan de la page tant que le panneau reste ouvert.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Évaluation

Stack technique
angular, typescript
Domaine
accessibility, frontend
Type d'issue
Bug
Difficulté
4/5
Temps estimé
3-5 jours
Activité
À l'abandon
Clarté
Plutôt claire
Accessibilité débutants
38/100

Recevez les nouvelles issues par e-mail

Un résumé court des issues GitHub adaptées aux débutants.