feat(services): rtl service

Author: xidedix

projects/coreui-angular/src/lib/services/public_api.ts

@@ -5,3 +5,4 @@ export { LocalStorageService } from './local-storage.service';
 export { InMemoryStorageService } from './in-memory-storage.service';
 export { ColorModeService, ColorMode } from './color-mode.service';
 export { UIDService } from './uid.service';
+export { RtlService } from './rtl.service';

projects/coreui-angular/src/lib/services/rtl.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { RtlService } from './rtl.service';
+
+describe('RtlService', () => {
+  let service: RtlService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(RtlService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

projects/coreui-angular/src/lib/services/rtl.service.ts

@@ -0,0 +1,17 @@
+import { inject, Injectable } from '@angular/core';
+import { DOCUMENT } from '@angular/common';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class RtlService {
+  readonly #document = inject(DOCUMENT);
+
+  isRTL(element?: HTMLElement | null): boolean {
+    if (element) {
+      return element.closest('[dir="rtl"]') !== null;
+    }
+
+    return this.#document?.documentElement?.dir === 'rtl' || this.#document?.body?.dir === 'rtl';
+  }
+}