[ACA-2375] Contextmenu - RTL support (#1099)

* direction element wrapper

* use CONTEXT_MENU_DIRECTION injection

* direction injection token

* refactor positionStrategy

* set CONTEXT_MENU_DIRECTION  value

* test

src/app/components/context-menu/context-menu.service.spec.ts

@@ -31,36 +31,85 @@ import { of } from 'rxjs';
 import { CoreModule } from '@alfresco/adf-core';
 import { ContextMenuService } from './context-menu.service';
 import { ContextMenuModule } from './context-menu.module';
+import { UserPreferencesService } from '@alfresco/adf-core';
 
 describe('ContextMenuService', () => {
   let contextMenuService;
+  let overlay;
+  let injector;
+  let userPreferencesService;
   const overlayConfig = {
     hasBackdrop: false,
     backdropClass: '',
-    panelClass: 'test-panel'
+    panelClass: 'test-panel',
+    source: {
+      x: 1,
+      y: 1
+    }
   };
 
   beforeEach(() => {
     TestBed.configureTestingModule({
       imports: [CoreModule.forRoot(), ContextMenuModule],
-      providers: [Overlay, { provide: Store, useValue: { select: () => of() } }]
+      providers: [
+        Overlay,
+        { provide: Store, useValue: { select: () => of() } },
+        UserPreferencesService
+      ]
     });
 
-    const injector = TestBed.get(Injector);
-    const overlay = TestBed.get(Overlay);
-
-    contextMenuService = new ContextMenuService(injector, overlay);
+    injector = TestBed.get(Injector);
+    overlay = TestBed.get(Overlay);
+    userPreferencesService = TestBed.get(UserPreferencesService);
   });
 
   it('should create a custom overlay', () => {
+    contextMenuService = new ContextMenuService(
+      injector,
+      overlay,
+      userPreferencesService
+    );
+
     contextMenuService.open(overlayConfig);
 
     expect(document.querySelector('.test-panel')).not.toBe(null);
   });
 
   it('should render component', () => {
+    contextMenuService = new ContextMenuService(
+      injector,
+      overlay,
+      userPreferencesService
+    );
+
     contextMenuService.open(overlayConfig);
 
     expect(document.querySelector('aca-context-menu')).not.toBe(null);
   });
+
+  it('should have default LTR direction value', () => {
+    contextMenuService = new ContextMenuService(
+      injector,
+      overlay,
+      userPreferencesService
+    );
+
+    contextMenuService.open(overlayConfig);
+
+    expect(document.body.querySelector('div[dir="ltr"]')).not.toBe(null);
+  });
+
+  it('should change direction on textOrientation event', () => {
+    spyOn(userPreferencesService, 'select').and.returnValue(of('rtl'));
+
+    contextMenuService = new ContextMenuService(
+      injector,
+      overlay,
+      userPreferencesService
+    );
+
+    contextMenuService.open(overlayConfig);
+
+    expect(document.body.querySelector('div[dir="rtl"]')).not.toBe(null);
+  });
 });