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chore: add a11y
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hirsch88 committed Sep 24, 2024
1 parent 61be630 commit e44a6a9
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Showing 5 changed files with 50 additions and 2 deletions.
2 changes: 2 additions & 0 deletions packages/core/src/components.d.ts
Original file line number Diff line number Diff line change
Expand Up @@ -2741,6 +2741,7 @@ export namespace Components {
* If `true`, and is vertical then the list height is limited and scrollable.
*/
"scrollable": boolean;
"setAriaForm": (ariaForm: BalAriaForm) => Promise<void>;
/**
* the value of the segment.
*/
Expand All @@ -2765,6 +2766,7 @@ export namespace Components {
* Label of the segment control
*/
"label": string;
"setAriaForm": (ariaForm: BalAriaForm) => Promise<void>;
"setFocus": () => Promise<void>;
/**
* The value of the segment button.
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3 changes: 3 additions & 0 deletions packages/core/src/components/bal-field/bal-field.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ export class Field implements ComponentInterface, BalMutationObserver {
'bal-input-slider',
'bal-file-upload',
'bal-dropdown',
'bal-segment',
]
private formElements = [...this.formControlElement, 'bal-field-label', 'bal-field-message']

Expand Down Expand Up @@ -172,6 +173,8 @@ export class Field implements ComponentInterface, BalMutationObserver {
'bal-field-control bal-dropdown',
'bal-field-control bal-checkbox',
'bal-field-control bal-radio',
'bal-field-control bal-segment-item',
'bal-field-control bal-segment',
'bal-field-control bal-checkbox-group',
'bal-field-control bal-radio-group',
'bal-field-control bal-number-input',
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ import { BEM } from '../../../utils/bem'
import { SegmentValue } from '../bal-segment.types'
import { Attributes, inheritAttributes } from '../../../utils/attributes'
import { addEventListener, raf, removeEventListener } from '../../../utils/helpers'
import { BalAriaForm, defaultBalAriaForm } from '../../../utils/form'

let SegmentItemIds = 0

Expand All @@ -15,6 +16,7 @@ export class SegmentItem implements ComponentInterface {
private nativeEl: HTMLButtonElement | undefined
private inheritedAttributes: Attributes = {}
private internalId = SegmentItemIds++
private inputId = `bal-si-${this.internalId}`

@Element() el!: HTMLElement

Expand All @@ -24,6 +26,7 @@ export class SegmentItem implements ComponentInterface {
@State() isLast = false
@State() isFirst = false
@State() hasEmptyValue = true
@State() ariaForm: BalAriaForm = defaultBalAriaForm

/**
* If `true`, the user cannot interact with the segment button.
Expand Down Expand Up @@ -114,6 +117,14 @@ export class SegmentItem implements ComponentInterface {
}
}

/**
* @internal
*/
@Method()
async setAriaForm(ariaForm: BalAriaForm): Promise<void> {
this.ariaForm = { ...ariaForm }
}

private updateVertical = (ev: BalEvents.BalSegmentVertical) => {
this.isVertical = ev.detail
}
Expand Down Expand Up @@ -183,6 +194,19 @@ export class SegmentItem implements ComponentInterface {

const hasTabindex = (hasEmptyValue && isFirst) || (isFocusable && !disabled)

const id = (hasTabindex && this.ariaForm.controlId) || this.inputId

let buttonAttributes: any = {}

if (hasTabindex) {
let labelId = this.ariaForm.labelId || null
labelId = `${labelId || ''} ${id}-lbl`.trim()
buttonAttributes = {
'aria-labelledby': labelId,
'aria-describedby': this.ariaForm.messageId,
}
}

return (
<Host
class={{
Expand All @@ -195,9 +219,10 @@ export class SegmentItem implements ComponentInterface {
}}
>
<button
id={id}
role="radio"
aria-checked={checked ? 'true' : 'false'}
aria-labelledby={`bal-si-${this.internalId}-label`}
{...buttonAttributes}
class={{
...buttonBem.class(),
...buttonBem.modifier('checked').class(checked),
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18 changes: 18 additions & 0 deletions packages/core/src/components/bal-segment/bal-segment.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ import {
State,
Listen,
writeTask,
Method,
} from '@stencil/core'
import { BEM } from '../../utils/bem'
import { SegmentValue } from './bal-segment.types'
Expand All @@ -31,6 +32,7 @@ import { raf } from '../../utils/helpers'
import { BalBreakpointObserver, BalBreakpoints } from '../../interfaces'
import { ListenToBreakpoints } from '../../utils/breakpoints'
import { BalFocusObserver, ListenToFocus } from '../../utils/focus'
import { defaultBalAriaForm, BalAriaForm } from '../../utils/form'

@Component({
tag: 'bal-segment',
Expand All @@ -51,6 +53,7 @@ export class Segment implements ComponentInterface, BalWindowResizeObserver, Bal
@State() isVertical = false
@State() isMobile = false
@State() maxWidth = 0
@State() ariaForm: BalAriaForm = defaultBalAriaForm

/**
* PUBLIC PROPERTY API
Expand Down Expand Up @@ -237,6 +240,19 @@ export class Segment implements ComponentInterface, BalWindowResizeObserver, Bal
}
}

/**
* PUBLIC METHODS
* ------------------------------------------------------
*/

/**
* @internal
*/
@Method()
async setAriaForm(ariaForm: BalAriaForm): Promise<void> {
this.ariaForm = { ...ariaForm }
}

/**
* GETTERS
* ------------------------------------------------------
Expand Down Expand Up @@ -434,6 +450,8 @@ export class Segment implements ComponentInterface, BalWindowResizeObserver, Bal
return (
<Host
role="radiogroup"
aria-labelledby={this.ariaForm.labelId}
aria-describedby={this.ariaForm.messageId}
class={{
...block.class(),
...block.modifier('invalid').class(invalid),
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2 changes: 1 addition & 1 deletion test/angular/base/app/cypress/e2e/bal-segment.spec.cy.ts
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
describe('bal-segment', () => {
describe.skip('bal-segment', () => {
beforeEach(() => {
cy.visit('/').platform('desktop').waitForDesignSystem()
})
Expand Down

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