refactor(material-experimental/menubar): switch to standalone

Reworks `material-experimental/menubar` to support standalone.

Author: crisbeto

src/material-experimental/menubar/menubar-item.spec.ts

@@ -10,8 +10,7 @@ describe('MatMenuBarItem', () => {
 
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
-      imports: [MatMenuBarModule, CdkMenuModule],
-      declarations: [SimpleMenuBarItem],
+      imports: [MatMenuBarModule, CdkMenuModule, SimpleMenuBarItem],
     }).compileComponents();
   }));
 
@@ -63,6 +62,8 @@ describe('MatMenuBarItem', () => {
       </div>
     </ng-template>
   `,
+  standalone: true,
+  imports: [MatMenuBarModule, CdkMenuModule],
 })
 class SimpleMenuBarItem {
   @ViewChild(CdkMenuItem) menubarItem: MatMenuBarItem;

src/material-experimental/menubar/menubar-item.ts

@@ -36,6 +36,7 @@ function removeIcons(element: Element) {
     '[attr.aria-disabled]': 'disabled || null',
   },
   providers: [{provide: CdkMenuItem, useExisting: MatMenuBarItem}],
+  standalone: true,
 })
 export class MatMenuBarItem extends CdkMenuItem {
   override getLabel(): string {

src/material-experimental/menubar/menubar-module.ts

@@ -12,8 +12,7 @@ import {MatMenuBar} from './menubar';
 import {MatMenuBarItem} from './menubar-item';
 
 @NgModule({
-  imports: [CdkMenuModule],
+  imports: [CdkMenuModule, MatMenuBar, MatMenuBarItem],
   exports: [MatMenuBar, MatMenuBarItem],
-  declarations: [MatMenuBar, MatMenuBarItem],
 })
 export class MatMenuBarModule {}

src/material-experimental/menubar/menubar.spec.ts

@@ -12,8 +12,7 @@ describe('MatMenuBar', () => {
 
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
-      imports: [MatMenuBarModule],
-      declarations: [SimpleMatMenuBar],
+      imports: [MatMenuBarModule, SimpleMatMenuBar],
     }).compileComponents();
   }));
 
@@ -56,6 +55,8 @@ describe('MatMenuBar', () => {
       <mat-menubar-item id="second"></mat-menubar-item>
     </mat-menubar>
   `,
+  standalone: true,
+  imports: [MatMenuBarModule],
 })
 class SimpleMatMenuBar {
   @ViewChild(CdkMenuBar) matMenubar: MatMenuBar;

src/material-experimental/menubar/menubar.ts

@@ -29,5 +29,6 @@ import {CDK_MENU, CdkMenuBar, CdkMenuGroup, MENU_STACK, MenuStack} from '@angula
     {provide: CDK_MENU, useExisting: MatMenuBar},
     {provide: MENU_STACK, useClass: MenuStack},
   ],
+  standalone: true,
 })
 export class MatMenuBar extends CdkMenuBar {}