client/src/app/core/routing/menu-guard.service.ts

   1 import { Injectable } from '@angular/core'
   2 import { CanActivate, CanDeactivate } from '@angular/router'
   3 import { MenuService } from '../menu'
   4 import { ScreenService } from '../wrappers'
   5
   6 abstract class MenuGuard implements CanActivate, CanDeactivate<any> {
   7   display = true
   8   canDeactivate = this.canActivate
   9
  10   constructor (protected menu: MenuService, protected screen: ScreenService, display: boolean) {
  11     this.display = display
  12   }
  13
  14   canActivate (): boolean {
  15     // small screens already have the site-wide onResize from screenService
  16     // > medium screens have enough space to fit the administrative menus
  17     if (!this.screen.isInMobileView() && this.screen.isInMediumView()) {
  18       this.menu.setMenuDisplay(this.display)
  19     }
  20     return true
  21   }
  22 }
  23
  24 @Injectable()
  25 export class OpenMenuGuard extends MenuGuard {
  26   constructor (menu: MenuService, screen: ScreenService) { super(menu, screen, true) }
  27 }
  28
  29 @Injectable()
  30 export class CloseMenuGuard extends MenuGuard {
  31   constructor (menu: MenuService, screen: ScreenService) { super(menu, screen, false) }
  32 }
  33
  34 @Injectable()
  35 export class MenuGuards {
  36   public static guards = [
  37     OpenMenuGuard,
  38     CloseMenuGuard
  39   ]
  40
  41   static open () {
  42     return OpenMenuGuard
  43   }
  44
  45   static close () {
  46     return CloseMenuGuard
  47   }
  48 }