CanLoad interfaz implemented for Lazy Loading modules.

docs/routing.md

@@ -32,4 +32,22 @@ this.tokenService.signIn({
   },
   error =>    console.log(error)
 );
-```
+```
+
+Angular-Token implements the `CanLoad` interface, so it can directly be used as a route guard on lazy loading modules.
+If the `signInRedirect` option is set the user will be redirected on a failed (=false) CanLoad using `Router.navigate()`.
+It currently does not distinguish between user types.
+
+#### Example:
+```javascript
+const routerConfig: Routes = [
+  {
+    path: '',
+    component: PublicComponent
+  }, {
+    path: 'restricted',
+    loadChildren: './restrictedmodule_path/restricted.module#RestrictedModule',
+    canLoad: [AngularTokenService]
+  }
+];
+```

projects/angular-token/src/lib/angular-token.service.ts

@@ -1,5 +1,6 @@
 import { Injectable, Optional, Inject, PLATFORM_ID } from '@angular/core';
-import { ActivatedRoute, Router, CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
+import { ActivatedRoute, Router, CanLoad, CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot,
+Route, UrlSegment } from '@angular/router';
 import { HttpClient, HttpResponse, HttpErrorResponse } from '@angular/common/http';
 import { isPlatformServer } from '@angular/common';
 
@@ -25,7 +26,7 @@ import {
 @Injectable({
   providedIn: 'root',
 })
-export class AngularTokenService implements CanActivate {
+export class AngularTokenService implements CanActivate, CanLoad {
 
   get currentUserType(): string {
     if (this.userType.value != null) {
@@ -145,6 +146,18 @@ export class AngularTokenService implements CanActivate {
     }
   }
 
+  canLoad(route: Route, segments: UrlSegment[]): boolean {
+    if (this.userSignedIn()) {
+      return true;
+    } else {
+      // Redirect user to sign in if signInRedirect is set
+      if (this.router && this.options.signInRedirect) {
+        this.router.navigate([this.options.signInRedirect]);
+      }
+      return false;
+    }
+  }
+
   canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
     if (this.userSignedIn()) {
       return true;