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 import { I18n } from '@ngx-translate/i18n-polyfill'
   6
   7 export type CanComponentDeactivateResult = { text?: string, canDeactivate: Observable<boolean> | boolean }
   8
   9 export interface CanComponentDeactivate {
  10   canDeactivate: () => CanComponentDeactivateResult
  11 }
  12
  13 @Injectable()
  14 export class CanDeactivateGuard implements CanDeactivate<CanComponentDeactivate> {
  15   constructor (
  16     private confirmService: ConfirmService,
  17     private i18n: I18n
  18   ) { }
  19
  20   canDeactivate (component: CanComponentDeactivate) {
  21     const result = component.canDeactivate()
  22     const text = result.text || this.i18n('All unsaved data will be lost, are you sure you want to leave this page?')
  23
  24     return result.canDeactivate || this.confirmService.confirm(
  25       text,
  26       this.i18n('Warning')
  27     )
  28   }
  29
  30 }