D-Net

import {Injectable} from "@angular/core";

import {BehaviorSubject, Observable} from "rxjs";

import {ActivationStart, Router} from "@angular/router";

@Injectable({

  providedIn: 'root'

})

export class LayoutService {

  /**

   * Set this to true when sidebar items are ready.

   */

  private openSubject: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);

  /**

   *  Add hasSidebar: false on data of route config, if sidebar is not needed.

   */

  private hasSidebarSubject: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);

  /**

   *  Add hasHeader: false on data of route config, if header is not needed.

   */

  private hasHeaderSubject: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);

  /**

   *  Add hasAdminMenu: false on data of route config, if header is not needed.

   */

  private _hasAdminMenuSubject: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);

  constructor(private router: Router) {

    this.router.events.subscribe(event => {

      if (event instanceof ActivationStart) {

        let data = event.snapshot.data;

        if (this.hasSidebarSubject.value === true &&

          data['hasSidebar'] !== undefined &&

          data['hasSidebar'] === false) {

          this.setHasSidebar(false);

        } else if (this.hasSidebarSubject.value === false) {

          this.setHasSidebar(true);

        }

        if (this.hasHeaderSubject.value === true &&

          data['hasHeader'] !== undefined &&

          data['hasHeader'] === false) {

          this.setHasHeader(false);

        } else if (this.hasHeaderSubject.value === false) {

          this.setHasHeader(true);

        }

        if (this._hasAdminMenuSubject.value === true &&

          data['hasAdminMenu'] !== undefined &&

          data['hasAdminMenu'] === false) {

          this.setHasAdminMenu(false);

        } else if (this.hasAdminMenu.value === false) {

          this.setHasAdminMenu(true);

        }

      }

    });

  }

  get open(): boolean {

    return this.openSubject.getValue();

  }

  setOpen(value: boolean) {

    this.openSubject.next(value);

  }

  get hasSidebar(): Observable<boolean> {

    return this.hasSidebarSubject.asObservable();

  }

  setHasSidebar(value: boolean) {

    this.hasSidebarSubject.next(value);

  }

  get hasHeader(): Observable<boolean> {

    return this.hasHeaderSubject.asObservable();

  }

  setHasHeader(value: boolean) {

    this.hasHeaderSubject.next(value);

  }

  get hasAdminMenu(): BehaviorSubject<boolean> {

    return this._hasAdminMenuSubject;

  }

  setHasAdminMenu(value: boolean) {

    this._hasAdminMenuSubject.next(value);

  }

}