fix(core): inherit aria attributes on host elements

core/src/components/back-button/back-button.tsx

@@ -7,7 +7,7 @@ import { getIonMode } from '../../global/ionic-global';
 import type { AnimationBuilder, Color } from '../../interface';
 import type { ButtonInterface } from '../../utils/element-interface';
 import type { Attributes } from '../../utils/helpers';
-import { inheritAttributes } from '../../utils/helpers';
+import { inheritAriaAttributes } from '../../utils/helpers';
 import { createColorClasses, hostContext, openURL } from '../../utils/theme';
 
 /**
@@ -70,7 +70,7 @@ export class BackButton implements ComponentInterface, ButtonInterface {
   @Prop() routerAnimation: AnimationBuilder | undefined;
 
   componentWillLoad() {
-    this.inheritedAttributes = inheritAttributes(this.el, ['aria-label']);
+    this.inheritedAttributes = inheritAriaAttributes(this.el);
 
     if (this.defaultHref === undefined) {
       this.defaultHref = config.get('backButtonDefaultHref');

core/src/components/breadcrumb/breadcrumb.tsx

@@ -5,7 +5,7 @@ import { chevronForwardOutline, ellipsisHorizontal } from 'ionicons/icons';
 import { getIonMode } from '../../global/ionic-global';
 import type { AnimationBuilder, BreadcrumbCollapsedClickEventDetail, Color, RouterDirection } from '../../interface';
 import type { Attributes } from '../../utils/helpers';
-import { inheritAttributes } from '../../utils/helpers';
+import { inheritAriaAttributes } from '../../utils/helpers';
 import { createColorClasses, hostContext, openURL } from '../../utils/theme';
 
 /**
@@ -124,7 +124,7 @@ export class Breadcrumb implements ComponentInterface {
   @Event() collapsedClick!: EventEmitter<BreadcrumbCollapsedClickEventDetail>;
 
   componentWillLoad() {
-    this.inheritedAttributes = inheritAttributes(this.el, ['aria-label']);
+    this.inheritedAttributes = inheritAriaAttributes(this.el);
   }
 
   private isClickable(): boolean {

core/src/components/button/button.tsx

@@ -5,7 +5,7 @@ import { getIonMode } from '../../global/ionic-global';
 import type { AnimationBuilder, Color, RouterDirection } from '../../interface';
 import type { AnchorInterface, ButtonInterface } from '../../utils/element-interface';
 import type { Attributes } from '../../utils/helpers';
-import { hasShadowDom, inheritAttributes } from '../../utils/helpers';
+import { inheritAriaAttributes, hasShadowDom } from '../../utils/helpers';
 import { createColorClasses, hostContext, openURL } from '../../utils/theme';
 
 /**
@@ -137,7 +137,7 @@ export class Button implements ComponentInterface, AnchorInterface, ButtonInterf
     this.inToolbar = !!this.el.closest('ion-buttons');
     this.inListHeader = !!this.el.closest('ion-list-header');
     this.inItem = !!this.el.closest('ion-item') || !!this.el.closest('ion-item-divider');
-    this.inheritedAttributes = inheritAttributes(this.el, ['aria-label']);
+    this.inheritedAttributes = inheritAriaAttributes(this.el);
   }
 
   private get hasIconOnly() {

core/src/components/header/header.tsx

@@ -4,7 +4,7 @@ import { Component, Element, Host, Prop, h, writeTask } from '@stencil/core';
 import { getIonMode } from '../../global/ionic-global';
 import { findIonContent, getScrollElement, printIonContentErrorMsg } from '../../utils/content';
 import type { Attributes } from '../../utils/helpers';
-import { inheritAttributes } from '../../utils/helpers';
+import { inheritAriaAttributes } from '../../utils/helpers';
 import { hostContext } from '../../utils/theme';
 
 import {
@@ -55,7 +55,7 @@ export class Header implements ComponentInterface {
   @Prop() translucent = false;
 
   componentWillLoad() {
-    this.inheritedAttributes = inheritAttributes(this.el, ['role']);
+    this.inheritedAttributes = inheritAriaAttributes(this.el);
   }
 
   componentDidLoad() {

core/src/components/input/input.tsx

@@ -10,7 +10,7 @@ import type {
   TextFieldTypes,
 } from '../../interface';
 import type { Attributes } from '../../utils/helpers';
-import { debounceEvent, findItemLabel, inheritAttributes } from '../../utils/helpers';
+import { inheritAriaAttributes, debounceEvent, findItemLabel, inheritAttributes } from '../../utils/helpers';
 import { createColorClasses } from '../../utils/theme';
 
 /**
@@ -257,7 +257,10 @@ export class Input implements ComponentInterface {
   }
 
   componentWillLoad() {
-    this.inheritedAttributes = inheritAttributes(this.el, ['aria-label', 'tabindex', 'title']);
+    this.inheritedAttributes = {
+      ...inheritAriaAttributes(this.el),
+      ...inheritAttributes(this.el, ['tabindex', 'title']),
+    };
   }
 
   connectedCallback() {

core/src/components/menu-button/menu-button.tsx

@@ -7,7 +7,7 @@ import { getIonMode } from '../../global/ionic-global';
 import type { Color } from '../../interface';
 import type { ButtonInterface } from '../../utils/element-interface';
 import type { Attributes } from '../../utils/helpers';
-import { inheritAttributes } from '../../utils/helpers';
+import { inheritAriaAttributes } from '../../utils/helpers';
 import { menuController } from '../../utils/menu-controller';
 import { createColorClasses, hostContext } from '../../utils/theme';
 import { updateVisibility } from '../menu-toggle/menu-toggle-util';
@@ -61,7 +61,7 @@ export class MenuButton implements ComponentInterface, ButtonInterface {
   @Prop() type: 'submit' | 'reset' | 'button' = 'button';
 
   componentWillLoad() {
-    this.inheritedAttributes = inheritAttributes(this.el, ['aria-label']);
+    this.inheritedAttributes = inheritAriaAttributes(this.el);
   }
 
   componentDidLoad() {

core/src/components/menu/menu.tsx

@@ -7,7 +7,7 @@ import type { Animation, Gesture, GestureDetail, MenuChangeEventDetail, MenuI, S
 import { getTimeGivenProgression } from '../../utils/animation/cubic-bezier';
 import { GESTURE_CONTROLLER } from '../../utils/gesture';
 import type { Attributes } from '../../utils/helpers';
-import { assert, clamp, inheritAttributes, isEndSide as isEnd } from '../../utils/helpers';
+import { inheritAriaAttributes, assert, clamp, isEndSide as isEnd } from '../../utils/helpers';
 import { menuController } from '../../utils/menu-controller';
 import { getOverlay } from '../../utils/overlays';
 
@@ -226,7 +226,7 @@ export class Menu implements ComponentInterface, MenuI {
   }
 
   componentWillLoad() {
-    this.inheritedAttributes = inheritAttributes(this.el, ['aria-label']);
+    this.inheritedAttributes = inheritAriaAttributes(this.el);
   }
 
   async componentDidLoad() {

core/src/components/range/range.tsx

@@ -14,7 +14,7 @@ import type {
   StyleEventDetail,
 } from '../../interface';
 import type { Attributes } from '../../utils/helpers';
-import { clamp, debounceEvent, getAriaLabel, inheritAttributes, renderHiddenInput } from '../../utils/helpers';
+import { inheritAriaAttributes, clamp, debounceEvent, getAriaLabel, renderHiddenInput } from '../../utils/helpers';
 import { isRTL } from '../../utils/rtl';
 import { createColorClasses, hostContext } from '../../utils/theme';
 
@@ -237,7 +237,7 @@ export class Range implements ComponentInterface {
      */
     this.rangeId = this.el.hasAttribute('id') ? this.el.getAttribute('id')! : `ion-r-${rangeIds++}`;
 
-    this.inheritedAttributes = inheritAttributes(this.el, ['aria-label']);
+    this.inheritedAttributes = inheritAriaAttributes(this.el);
   }
 
   componentDidLoad() {

core/src/components/textarea/textarea.tsx

@@ -4,7 +4,7 @@ import { Build, Component, Element, Event, Host, Method, Prop, State, Watch, h,
 import { getIonMode } from '../../global/ionic-global';
 import type { Color, StyleEventDetail, TextareaChangeEventDetail } from '../../interface';
 import type { Attributes } from '../../utils/helpers';
-import { debounceEvent, findItemLabel, inheritAttributes, raf } from '../../utils/helpers';
+import { inheritAriaAttributes, debounceEvent, findItemLabel, inheritAttributes, raf } from '../../utils/helpers';
 import { createColorClasses } from '../../utils/theme';
 
 /**
@@ -220,7 +220,10 @@ export class Textarea implements ComponentInterface {
   }
 
   componentWillLoad() {
-    this.inheritedAttributes = inheritAttributes(this.el, ['title']);
+    this.inheritedAttributes = {
+      ...inheritAriaAttributes(this.el),
+      ...inheritAttributes(this.el, ['title']),
+    };
   }
 
   componentDidLoad() {

core/src/utils/helpers.ts

@@ -103,6 +103,74 @@ export const inheritAttributes = (el: HTMLElement, attributes: string[] = []) =>
   return attributeObject;
 };
 
+/**
+ * List of available ARIA attributes + `role`.
+ * Removed deprecated attributes.
+ * https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes
+ */
+const ariaAttributes = [
+  'role',
+  'aria-activedescendant',
+  'aria-atomic',
+  'aria-autocomplete',
+  'aria-braillelabel',
+  'aria-brailleroledescription',
+  'aria-busy',
+  'aria-checked',
+  'aria-colcount',
+  'aria-colindex',
+  'aria-colindextext',
+  'aria-colspan',
+  'aria-controls',
+  'aria-current',
+  'aria-describedby',
+  'aria-description',
+  'aria-details',
+  'aria-disabled',
+  'aria-errormessage',
+  'aria-expanded',
+  'aria-flowto',
+  'aria-haspopup',
+  'aria-hidden',
+  'aria-invalid',
+  'aria-keyshortcuts',
+  'aria-label',
+  'aria-labelledby',
+  'aria-level',
+  'aria-live',
+  'aria-multiline',
+  'aria-multiselectable',
+  'aria-orientation',
+  'aria-owns',
+  'aria-placeholder',
+  'aria-posinset',
+  'aria-pressed',
+  'aria-readonly',
+  'aria-relevant',
+  'aria-required',
+  'aria-roledescription',
+  'aria-rowcount',
+  'aria-rowindex',
+  'aria-rowindextext',
+  'aria-rowspan',
+  'aria-selected',
+  'aria-setsize',
+  'aria-sort',
+  'aria-valuemax',
+  'aria-valuemin',
+  'aria-valuenow',
+  'aria-valuetext',
+];
+
+/**
+ * Returns an array of aria attributes that should be copied from
+ * the shadow host element to a target within the light DOM.
+ * @param el The element that the attributes should be copied from.
+ */
+export const inheritAriaAttributes = (el: HTMLElement) => {
+  return inheritAttributes(el, ariaAttributes);
+};
+
 export const addEventListener = (el: any, eventName: string, callback: any, opts?: any) => {
   if (typeof (window as any) !== 'undefined') {
     const win = window as any;

core/src/utils/test/attributes.spec.ts

@@ -1,4 +1,4 @@
-import { inheritAttributes } from '../helpers';
+import { inheritAttributes, inheritAriaAttributes } from '../helpers';
 
 describe('inheritAttributes()', () => {
   it('should create an attribute inheritance object', () => {
@@ -37,3 +37,29 @@ describe('inheritAttributes()', () => {
     });
   });
 });
+
+describe('inheritAriaAttributes()', () => {
+  it('should inherit ARIA attributes defined on the HTML element', () => {
+    const el = document.createElement('div');
+    el.setAttribute('aria-label', 'myLabel');
+    el.setAttribute('aria-describedby', 'myDescription');
+
+    const attributeObject = inheritAriaAttributes(el);
+
+    expect(attributeObject).toEqual({
+      'aria-label': 'myLabel',
+      'aria-describedby': 'myDescription',
+    });
+  });
+
+  it('should inherit the role attribute defined on the HTML element', () => {
+    const el = document.createElement('div');
+    el.setAttribute('role', 'button');
+
+    const attributeObject = inheritAriaAttributes(el);
+
+    expect(attributeObject).toEqual({
+      role: 'button',
+    });
+  });
+});