feat(menu): add support for query parameters (#283)

e2e/menu.e2e-spec.ts

@@ -276,4 +276,18 @@ describe('nb-menu', () => {
         expect(browser.getCurrentUrl()).toContain('#/menu/1');
       });
   });
+
+  it('should add query string to url', () => {
+    element.all(menu1).first().click()
+      .then(() => {
+        expect(browser.getCurrentUrl()).toContain('param=1');
+      })
+  });
+
+  it('should add query string to url (navigate home)', () => {
+    element(homeButton).click()
+      .then(() => {
+        expect(browser.getCurrentUrl()).toContain('param=2');
+      })
+  });
 });

src/app/menu-test/menu-test.component.ts

@@ -111,6 +111,7 @@ export class NbMenuTestComponent implements OnInit, OnDestroy {
       title: 'Menu #1',
       link: '/menu/1',
       icon: 'nb-keypad',
+      queryParams: { param: 1 },
     },
     {
       title: 'Menu #2',
@@ -166,6 +167,7 @@ export class NbMenuTestComponent implements OnInit, OnDestroy {
                 {
                   title: 'Menu #3.3.2',
                   link: '/menu/3/3/2',
+                  queryParams: { param: 2 },
                   home: true,
                 },
                 {

src/framework/theme/components/menu/menu-item.component.html

@@ -5,6 +5,7 @@
 <a *ngIf="menuItem.link && !menuItem.url && !menuItem.children && !menuItem.group && !menuItem.hidden"
         [routerLink]="menuItem.link"
         [fragment]="menuItem.fragment"
+        [queryParams]="menuItem.queryParams"
         [attr.target]="menuItem.target"
         [attr.title]="menuItem.title"
         [class.active]="menuItem.selected"

src/framework/theme/components/menu/menu.component.ts

@@ -289,7 +289,7 @@ export class NbMenuComponent implements OnInit, AfterViewInit, OnDestroy {
 
     if (homeItem) {
       if (homeItem.link) {
-        this.router.navigate([homeItem.link]);
+        this.router.navigate([homeItem.link], { queryParams: homeItem.queryParams });
       }
 
       if (homeItem.url) {

src/framework/theme/components/menu/menu.service.ts

@@ -10,6 +10,7 @@ import { Observable } from 'rxjs/Observable';
 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
 import { ReplaySubject } from 'rxjs/ReplaySubject';
 import { share } from 'rxjs/operators/share';
+import { Params } from '@angular/router';
 
 export interface NbMenuBag { tag: string; item: NbMenuItem }
 
@@ -87,6 +88,10 @@ export abstract class NbMenuItem {
    * @type {boolean}
    */
   group?: boolean;
+  /** Map of query parameters
+   *@type {Params}
+   */
+  queryParams?: Params;
   parent?: NbMenuItem;
   selected?: boolean;
   data?: any;