can-deactivate-guard.service.ts

   1 import { Observable } from 'rxjs'
   2 import { Injectable } from '@angular/core'
   3 import { ConfirmService } from '@app/core/confirm'
   4
   5 export type CanComponentDeactivateResult = { text?: string, canDeactivate: Observable<boolean> | boolean }
   6
   7 export interface CanComponentDeactivate {
   8   canDeactivate: () => CanComponentDeactivateResult
   9 }
  10
  11 @Injectable()
  12 export class CanDeactivateGuard {
  13
  14   constructor (private confirmService: ConfirmService) { }
  15
  16   canDeactivate (component: CanComponentDeactivate) {
  17     const result = component.canDeactivate()
  18     const text = result.text || $localize`All unsaved data will be lost, are you sure you want to leave this page?`
  19
  20     return result.canDeactivate || this.confirmService.confirm(
  21       text,
  22       $localize`Warning`
  23     )
  24   }
  25
  26 }