bug(cdk/table): CdkTable does not handle column updates correctly when using recycleRows
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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
When using `CdkTable` with the table `recycleRows` directive it doesn't look like the table doesn't re-render cached rows not currently in the DOM. This leads to a situation where if those cached rows are later re-used the cells in the row don't match the columns.
It seems like this may be just a matter of clearing the row cache in `_forceRenderDataRows`. This assumes the row elements can't be re-used at all, but that seems to be the current behavior of `_forceRenderDataRows` to re-render everything. It looks like this could be achieved by calling `detach` on the `_RecycleViewRepeaterStrategy` instance in `_forceRenderDataRows`, but it's unclear the semantics of that method since it's not documented in `_ViewRepeater`. `CdkVirtualForOf` only calls it in `ngOnDestroy` and **`CdkTable` never calls it** (probably a separate bug where these row views get leaked when the table gets destroyed).
### Reproduction
StackBlitz link: https://stackblitz.com/edit/mssn6jgh?file=src%2Fexample%2Fcdk-table-recycle-rows-example.ts
Steps to reproduce:
1. Click `Set Short List` to reduce the number of rows to 15 (caching the 10 removed rows).
2. Then click `Toggle Columns`. This forces a full re-render through `_forceRenderDataRows` (which doesn't populate the cache when removing).
### Expected Behavior
All 15 rows re-render correctly
### Actual Behavior
When the 15 rows are re-rendered 5 have the old list of 3 columns since they were inserted from the cache and the remaining 10 are new rows and render correctly.
### Environment
- Angular: 20.2.4
- CDK/Material: 20.2.4
- Browser(s): 141.0.7390.126
- Operating System (e.g. Windows, macOS, Ubuntu): ChromeOS
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Direzione di ricerca
Riproduci il problema con l'esempio StackBlitz in src/example/cdk-table-recycle-rows-example.ts, quindi esamina CdkTable._forceRenderDataRows e il comportamento di detach di _RecycleViewRepeaterStrategy. Verifica che alternare le colonne dopo aver ridotto l'elenco esegua il rendering di tutte le 15 righe con le colonne corrispondenti, incluse le righe riutilizzate dalla cache.
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
- Attiva
- Chiarezza
- Abbastanza chiara
- Idoneità per principianti
- 52/100