UPDATE more details about observable usage
I've need service because checkboxcell component can't use @Output() property. This happened becaues of wrong usage with ag-grid api - renderer component was used as editor. It can't be corrected at this moment.
@Component({
...
template: `<mat-checkbox (change)="onChanged($event)"></mat-checkbox>`
})
export class CheckboxCellComponent implements ICellRendererAngularComp {
...
//each component that use checkboxcell provide own instance of PermissionChange
constructor(private permissionChange: PermissionChange) {
}
public onChanged({ checked }): void {
//use observable
this.permissionChange.changeEvent.next();
}
}
ORIGINAL question
I have a simple service
export class PermissionChange {
public changeEvent: Subject<void>;
constructor() {
this.changeEvent = new Subject<void>();
}
}
And component, that use the service:
@Component({
...
providers: [PermissionChange]
})
export class ...Component implements OnInit {
constructor(
private permissionChange: PermissionChange,
) { }
public ngOnInit(): void {
//subscription
this.permissionChange.changeEvent.subscribe(() => {...});
}
}
PermisionChange is personal provider for this component => instance of PermisionChange will be destroyed in the moment when component will be destroyed => changeEvent observable will be destroyed too. So maybe there is no need to unsubscribe, maybe subscribtion will be destroyed too? But I don't know how to check it.
