+import { Injectable } from '@angular/core';
+// import { Observable } from 'rxjs/Observable';
+import { Observable,throwError } from 'rxjs'
+import { of } from 'rxjs';
+// import {} from './../../assets/images/akraino-icon-1.png'
+// import 'rxjs/add/Observable/of';
+// import 'of;
+
+@Injectable({
+ providedIn: 'root'
+})
+export class ToolbarService {
+
+ visible: Observable<boolean>;
+ vis: boolean;
+
+ constructor() { }
+
+ hide() {
+ this.visible = of(false);
+ console.log("inside hide method");
+ console.log(this.visible);
+ }
+
+ show() {
+ this.visible = of(true);
+ console.log(this.visible);
+ // console.log(this.visible.value);
+ // this.vis = this.visible.value;
+ }
+
+ toggle() {
+ this.visible =of(!this.visible);
+ }
+}