feat(ui5-avatar-group): add accessibleName and accessibleNameRef (#11699)

- Add accessibleName and accessibleNameRef properties
- Add _ariaLabelledBy getter for aria-labelledby support
- Update _ariaLabelText getter to handle custom accessible names
- Add Cypress tests

Author: NakataCode

packages/main/cypress/specs/AvatarGroup.cy.tsx

@@ -64,3 +64,62 @@ describe("Avatars", () => {
 		});
 	});
 });
+
+describe("Accessibility", () => {
+	it("checks if accessibleName is properly set and applied as aria-label", () => {
+		const customLabel = "Development Team Members";
+		
+		cy.mount(<AvatarGroup id="ag" accessible-name={customLabel}>
+			<Avatar initials="JD"></Avatar>
+			<Avatar initials="SM"></Avatar>
+			<Avatar initials="KL"></Avatar>
+		</AvatarGroup>);
+
+		cy.get("#ag")
+			.should("have.attr", "accessible-name", customLabel)
+			.then(($el) => {
+				const avatarGroup = $el.get(0) as AvatarGroup;
+				expect(avatarGroup.accessibleName).to.equal(customLabel);
+			});
+
+		cy.get("#ag")
+			.shadow()
+			.find(".ui5-avatar-group-items")
+			.should("have.attr", "aria-label", customLabel)
+			.and("not.have.attr", "aria-labelledby");
+	});
+
+	it("checks if accessibleNameRef is properly set and applied as aria-label", () => {
+		const labelId = "team-header";
+		
+		cy.mount(
+			<>
+				<h3 id={labelId}>Quality Assurance Team</h3>
+				<AvatarGroup id="ag" accessible-name-ref={labelId}>
+					<Avatar initials="AB"></Avatar>
+					<Avatar initials="CD"></Avatar>
+					<Avatar initials="EF"></Avatar>
+				</AvatarGroup>
+			</>
+		);
+	
+		cy.get("#ag")
+			.should("have.attr", "accessible-name-ref", labelId)
+			.then(($el) => {
+				const avatarGroup = $el.get(0) as AvatarGroup;
+				expect(avatarGroup.accessibleNameRef).to.equal(labelId);
+			});
+	
+		cy.get("#ag")
+			.shadow()
+			.find(".ui5-avatar-group-items")
+			.should("have.attr", "aria-label", "Quality Assurance Team");
+		
+		cy.get("#ag")
+			.shadow()
+			.find(".ui5-avatar-group-items")
+			.should("not.have.attr", "aria-labelledby");
+		
+		cy.get(`#${labelId}`).should("exist");
+	});
+});

packages/main/src/AvatarGroup.ts

@@ -36,6 +36,7 @@ import AvatarGroupCss from "./generated/themes/AvatarGroup.css.js";
 
 // Template
 import AvatarGroupTemplate from "./AvatarGroupTemplate.js";
+import { getEffectiveAriaLabelText } from "@ui5/webcomponents-base/dist/util/AccessibilityTextsHelper.js";
 
 /**
  * Interface for components that represent an avatar and may be slotted in numerous higher-order components such as `ui5-avatar-group`
@@ -200,6 +201,26 @@ class AvatarGroup extends UI5Element {
 	@property({ noAttribute: true })
 	_overflowButtonText?: string;
 
+	/**
+ 	* Defines the accessible name of the AvatarGroup.
+ 	* When provided, this will override the default aria-label text.
+ 	* @default undefined
+ 	* @public
+ 	* @since 2.12.0
+ 	*/
+	@property()
+	accessibleName?: string;
+
+	/**
+ 	* Receives id(s) of the elements that describe the AvatarGroup.
+ 	* When provided, this will be used as aria-labelledby instead of aria-label.
+ 	* @default undefined
+ 	* @public
+ 	* @since 2.12.0
+ 	*/
+	@property()
+	accessibleNameRef?: string;
+
 	/**
 	 * Defines the items of the component. Use the `ui5-avatar` component as an item.
 	 *
@@ -265,6 +286,10 @@ class AvatarGroup extends UI5Element {
 	}
 
 	get _ariaLabelText() {
+		if (this.accessibleName || this.accessibleNameRef) {
+			return getEffectiveAriaLabelText(this);
+		}
+		// Fallback to existing default behavior
 		const hiddenItemsCount = this.hiddenItems.length;
 		const typeLabelKey = this._isGroup ? AVATAR_GROUP_ARIA_LABEL_GROUP : AVATAR_GROUP_ARIA_LABEL_INDIVIDUAL;