how-to-prevent-view-destruction.md

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How to prevent view destruction

In the view component, implement WbBeforeDestroy lifecycle hook. It is called when the component is about to be destroyed.

@Component({
  ...
  providers: [provideWorkbenchView(ViewComponent)]
})
export class ViewComponent implements WbBeforeDestroy {

  public wbBeforeDestroy(): Observable<boolean> | Promise<boolean> | boolean {
    // e.g., ask the user to close the view
  }
}

For non Angular applications, register a function via ViewService.

Platform.getService(ViewService).setDestroyNotifier(() => Observable<boolean> | Promise<boolean> | boolean {
  // e.g., ask the user to close the view
});