feat(action-sheet): add htmlAttributes property for passing attributes to buttons (#27863)

Issue number: N/A

---------

## What is the current behavior?
Buttons containing only icons are not accessible as there is no way to
pass an `aria-label` attribute (or any other html attribute).

## What is the new behavior?
- Adds the `htmlAttributes` property on the `ActionSheetButton`
interface
- Passes the `htmlAttributes` to the buttons (both the buttons array and
the cancelButton)
- Adds two tests to verify `aria-label` and `aria-labelled-by` are
passed to a button with and without the cancel role - this was done
because action sheet breaks these buttons up when rendering

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

core/src/components/action-sheet/action-sheet-interface.ts

@@ -23,6 +23,7 @@ export interface ActionSheetButton<T = any> {
   icon?: string;
   cssClass?: string | string[];
   id?: string;
+  htmlAttributes?: { [key: string]: any };
   handler?: () => boolean | void | Promise<boolean | void>;
   data?: T;
 }

core/src/components/action-sheet/action-sheet.tsx

@@ -386,7 +386,13 @@ export class ActionSheet implements ComponentInterface, OverlayInterface {
                 </div>
               )}
               {buttons.map((b) => (
-                <button type="button" id={b.id} class={buttonClass(b)} onClick={() => this.buttonClick(b)}>
+                <button
+                  {...b.htmlAttributes}
+                  type="button"
+                  id={b.id}
+                  class={buttonClass(b)}
+                  onClick={() => this.buttonClick(b)}
+                >
                   <span class="action-sheet-button-inner">
                     {b.icon && <ion-icon icon={b.icon} aria-hidden="true" lazy={false} class="action-sheet-icon" />}
                     {b.text}
@@ -398,7 +404,12 @@ export class ActionSheet implements ComponentInterface, OverlayInterface {
 
             {cancelButton && (
               <div class="action-sheet-group action-sheet-group-cancel">
-                <button type="button" class={buttonClass(cancelButton)} onClick={() => this.buttonClick(cancelButton)}>
+                <button
+                  {...cancelButton.htmlAttributes}
+                  type="button"
+                  class={buttonClass(cancelButton)}
+                  onClick={() => this.buttonClick(cancelButton)}
+                >
                   <span class="action-sheet-button-inner">
                     {cancelButton.icon && (
                       <ion-icon icon={cancelButton.icon} aria-hidden="true" lazy={false} class="action-sheet-icon" />

core/src/components/action-sheet/test/a11y/action-sheet.e2e.ts

@@ -10,16 +10,36 @@ const testAria = async (page: E2EPage, buttonID: string, expectedAriaLabelledBy:
   await button.click();
   await didPresent.next();
 
-  const alert = page.locator('ion-action-sheet');
+  const actionSheet = page.locator('ion-action-sheet');
 
   /**
    * expect().toHaveAttribute() can't check for a null value, so grab and check
    * the value manually instead.
    */
-  const ariaLabelledBy = await alert.getAttribute('aria-labelledby');
+  const ariaLabelledBy = await actionSheet.getAttribute('aria-labelledby');
 
   expect(ariaLabelledBy).toBe(expectedAriaLabelledBy);
 };
+
+const testAriaButton = async (
+  page: E2EPage,
+  buttonID: string,
+  expectedAriaLabelledBy: string,
+  expectedAriaLabel: string
+) => {
+  const didPresent = await page.spyOnEvent('ionActionSheetDidPresent');
+
+  const button = page.locator(`#${buttonID}`);
+  await button.click();
+
+  await didPresent.next();
+
+  const actionSheetButton = page.locator('ion-action-sheet .action-sheet-button');
+
+  await expect(actionSheetButton).toHaveAttribute('aria-labelledby', expectedAriaLabelledBy);
+  await expect(actionSheetButton).toHaveAttribute('aria-label', expectedAriaLabel);
+};
+
 configs({ directions: ['ltr'] }).forEach(({ config, title }) => {
   test.describe(title('action-sheet: a11y'), () => {
     test.beforeEach(async ({ page }) => {
@@ -52,5 +72,17 @@ configs({ directions: ['ltr'] }).forEach(({ config, title }) => {
     test('should allow for manually specifying aria attributes', async ({ page }) => {
       await testAria(page, 'customAria', 'Custom title');
     });
+
+    test('should have aria-labelledby and aria-label added to the button when htmlAttributes is set', async ({
+      page,
+    }) => {
+      await testAriaButton(page, 'ariaLabelButton', 'close-label', 'close button');
+    });
+
+    test('should have aria-labelledby and aria-label added to the cancel button when htmlAttributes is set', async ({
+      page,
+    }) => {
+      await testAriaButton(page, 'ariaLabelCancelButton', 'cancel-label', 'cancel button');
+    });
   });
 });

core/src/components/action-sheet/test/a11y/index.html

@@ -23,6 +23,10 @@
       <ion-button id="subHeaderOnly" expand="block" onclick="presentSubHeaderOnly()">Subheader Only</ion-button>
       <ion-button id="noHeaders" expand="block" onclick="presentNoHeaders()">No Headers</ion-button>
       <ion-button id="customAria" expand="block" onclick="presentCustomAria()">Custom Aria</ion-button>
+      <ion-button id="ariaLabelButton" expand="block" onclick="presentAriaLabelButton()">Aria Label Button</ion-button>
+      <ion-button id="ariaLabelCancelButton" expand="block" onclick="presentAriaLabelCancelButton()"
+        >Aria Label Cancel Button</ion-button
+      >
     </main>
 
     <script>
@@ -63,6 +67,39 @@
           },
         });
       }
+
+      function presentAriaLabelButton() {
+        openActionSheet({
+          header: 'Header',
+          subHeader: 'Subtitle',
+          buttons: [
+            {
+              text: 'Close',
+              htmlAttributes: {
+                'aria-label': 'close button',
+                'aria-labelledby': 'close-label',
+              },
+            },
+          ],
+        });
+      }
+
+      function presentAriaLabelCancelButton() {
+        openActionSheet({
+          header: 'Header',
+          subHeader: 'Subtitle',
+          buttons: [
+            {
+              text: 'Cancel',
+              role: 'cancel',
+              htmlAttributes: {
+                'aria-label': 'cancel button',
+                'aria-labelledby': 'cancel-label',
+              },
+            },
+          ],
+        });
+      }
     </script>
   </body>
 </html>