angular / angular/components

bug(mat-form-field): Label for outline mat-form-field is overlapping matPrefix icon in a mat-sidenav

Aperta
#28,313 4 commenti 3 reazioni 0 assegnatari Vedi su GitHub
area: material/form-field area: material/sidenav P3
Lingua principale
TypeScript
Stelle
25k
Fork
6.8k
Merge medio
1g 8h
PR unite (30g)
91

Descrizione

### 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

I noticed that the `transform` property on the `` for a `mat-form-field` with `appearance="outline"` isn't correctly picking up the width of the icon, if the form field has a `matPrefix`. This is specific to when the form field is within a `mat-sidenav` (perhaps other components that aren't visible on component init, but I haven't tried).

See attached images of the DOM elements and place in the code where this is calculated, plus attached blitz which shows the correct behavior for a `mat-form-field` with `appearance="fill"`

![image](https://github.com/angular/components/assets/15719045/d2662080-5d19-47b2-90ac-e8fe1e0b6d5e)

![image](https://github.com/angular/components/assets/15719045/ed36b6d9-234c-4205-a6cf-401ac762720c)

### Reproduction

StackBlitz link: https://stackblitz.com/edit/i6aa9z
Steps to reproduce:
1. Add a `mat-form-field` with a `matPrefix` and `appearance="outline"` to a `mat-sidenav`
2. Toggle the `mat-sidenav` open

### Expected Behavior

Label should be shifted to the left so that it does not overlap the icon

### Actual Behavior

Label is overlapping the prefix icon

### Environment

- Angular: 17.0.0
- CDK/Material: 17.0.4
- Browser(s): Chrome
- Operating System (e.g. Windows, macOS, Ubuntu): macOS, Windows

Guida per i contributori

Apri la guida per i contributori

Direzione di ricerca

Inizia con la riproduzione StackBlitz collegata e analizza il calcolo della trasformazione dell'etichetta outline di mat-form-field quando il campo si trova inizialmente all'interno di un mat-sidenav chiuso. Confronta gli aspetti outline e fill, quindi verifica che l'apertura del sidenav sposti l'etichetta in modo da liberare l'icona matPrefix.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Valutazione

Stack tecnologico
angular, typescript
Ambito
frontend
Tipo di issue
Bug
Difficoltà
3/5
Tempo stimato
1-2 giorni
Stato di attività
Ferma
Chiarezza
Abbastanza chiara
Idoneità per principianti
35/100

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