1 files changed, 28 insertions, 0 deletions

diff --git a/client/src/app/shared/guards/can-deactivate-guard.service.ts b/client/src/app/shared/guards/can-deactivate-guard.service.ts
new file mode 100644
index 000000000..15618f699
--- /dev/null
+++ b/client/src/app/shared/guards/can-deactivate-guard.service.ts
@@ -0,0 +1,28 @@
+import { Injectable } from '@angular/core'
+import { CanDeactivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router'
+import { Observable } from 'rxjs/Observable'
+import { ConfirmService } from '../../core/index'
+
+export interface CanComponentDeactivate {
+  canDeactivate: () => { text?: string, canDeactivate: Observable<boolean> | boolean }
+}
+
+@Injectable()
+export class CanDeactivateGuard implements CanDeactivate<CanComponentDeactivate> {
+  constructor (private confirmService: ConfirmService) { }
+
+  canDeactivate (component: CanComponentDeactivate,
+    currentRoute: ActivatedRouteSnapshot,
+    currentState: RouterStateSnapshot,
+    nextState: RouterStateSnapshot
+  ): Observable<boolean> | boolean {
+    const result = component.canDeactivate()
+    const text = result.text || 'All unsaved data will be lost, are you sure you want to leave this page?'
+
+    return result.canDeactivate || this.confirmService.confirm(
+      text,
+      'Warning'
+    )
+  }
+
+}