client/src/app/core/routing/can-deactivate-guard.service.ts

   1 import { Observable } from 'rxjs'
   2 import { Injectable } from '@angular/core'
   3 import { CanDeactivate } from '@angular/router'
   4 import { ConfirmService } from '@app/core/confirm'
   5
   6 export type CanComponentDeactivateResult = { text?: string, canDeactivate: Observable<boolean> | boolean }
   7
   8 export interface CanComponentDeactivate {
   9   canDeactivate: () => CanComponentDeactivateResult
  10 }
  11
  12 @Injectable()
  13 export class CanDeactivateGuard implements CanDeactivate<CanComponentDeactivate> {
  14
  15   constructor (private confirmService: ConfirmService) { }
  16
  17   canDeactivate (component: CanComponentDeactivate) {
  18     const result = component.canDeactivate()
  19     const text = result.text || $localize`All unsaved data will be lost, are you sure you want to leave this page?`
  20
  21     return result.canDeactivate || this.confirmService.confirm(
  22       text,
  23       $localize`Warning`
  24     )
  25   }
  26
  27 }