Add interface logic for reverting page to previous version

src/app/pages/editor/editor.page.ts

@@ -168,6 +168,12 @@ export class EditorPage implements OnInit {
       cssClass: 'modal-big',
     });
 
+    modal.onDidDismiss().then(reload => {
+      if ( reload ) {
+        this.editorService.startEditing(this.pageId);
+      }
+    });
+
     await modal.present();
   }
 }