feat(FormField): set aria-describedby and aria-invalid attributes

src/runtime/components/Checkbox.vue

@@ -66,7 +66,7 @@ const modelValue = defineModel<boolean | 'indeterminate'>({ default: undefined }
 const rootProps = useForwardProps(reactivePick(props, 'required', 'value', 'defaultValue'))
 
 const appConfig = useAppConfig()
-const { id: _id, emitFormChange, emitFormInput, size, color, name, disabled } = useFormField<CheckboxProps>(props)
+const { id: _id, emitFormChange, emitFormInput, size, color, name, disabled, ariaAttrs } = useFormField<CheckboxProps>(props)
 const id = _id.value ?? useId()
 
 const ui = computed(() => checkbox({
@@ -92,7 +92,7 @@ function onUpdate(value: any) {
     <div :class="ui.container({ class: props.ui?.container })">
       <CheckboxRoot
         :id="id"
-        v-bind="rootProps"
+        v-bind="{ ...rootProps, ...ariaAttrs }"
         v-model="modelValue"
         :name="name"
         :disabled="disabled"

src/runtime/components/FormField.vue

@@ -66,6 +66,9 @@ const formErrors = inject<Ref<FormError[]> | null>('form-errors', null)
 const error = computed(() => props.error || formErrors?.value?.find(error => error.name === props.name || (props.errorPattern && error.name.match(props.errorPattern)))?.message)
 
 const id = ref(useId())
+// Copies id's initial value to bind aria-attributes such as aria-describedby.
+// This is required for the RadioGroup component which unsets the id value.
+const ariaId = id.value
 
 provide(inputIdInjectionKey, id)
 
@@ -75,7 +78,10 @@ provide(formFieldInjectionKey, computed(() => ({
   size: props.size,
   eagerValidation: props.eagerValidation,
   validateOnInputDelay: props.validateOnInputDelay,
-  errorPattern: props.errorPattern
+  errorPattern: props.errorPattern,
+  hint: props.hint,
+  description: props.description,
+  ariaId
 }) as FormFieldInjectedOptions<FormFieldProps>))
 </script>
 
@@ -88,14 +94,14 @@ provide(formFieldInjectionKey, computed(() => ({
             {{ label }}
           </slot>
         </Label>
-        <span v-if="hint || !!slots.hint" :class="ui.hint({ class: props.ui?.hint })">
+        <span v-if="hint || !!slots.hint" :id="`${ariaId}-hint`" :class="ui.hint({ class: props.ui?.hint })">
           <slot name="hint" :hint="hint">
             {{ hint }}
           </slot>
         </span>
       </div>
 
-      <p v-if="description || !!slots.description" :class="ui.description({ class: props.ui?.description })">
+      <p v-if="description || !!slots.description" :id="`${ariaId}-description`" :class="ui.description({ class: props.ui?.description })">
         <slot name="description" :description="description">
           {{ description }}
         </slot>
@@ -105,7 +111,7 @@ provide(formFieldInjectionKey, computed(() => ({
     <div :class="[(label || !!slots.label || description || !!slots.description) && ui.container({ class: props.ui?.container })]">
       <slot :error="error" />
 
-      <p v-if="(typeof error === 'string' && error) || !!slots.error" :class="ui.error({ class: props.ui?.error })">
+      <p v-if="(typeof error === 'string' && error) || !!slots.error" :id="`${ariaId}-error`" :class="ui.error({ class: props.ui?.error })">
         <slot name="error" :error="error">
           {{ error }}
         </slot>

src/runtime/components/Input.vue

@@ -75,7 +75,7 @@ const slots = defineSlots<InputSlots>()
 
 const [modelValue, modelModifiers] = defineModel<string | number>()
 
-const { emitFormBlur, emitFormInput, emitFormChange, size: formGroupSize, color, id, name, highlight, disabled } = useFormField<InputProps>(props, { deferInputValidation: true })
+const { emitFormBlur, emitFormInput, emitFormChange, size: formGroupSize, color, id, name, highlight, disabled, ariaAttrs } = useFormField<InputProps>(props, { deferInputValidation: true })
 const { orientation, size: buttonGroupSize } = useButtonGroup<InputProps>(props)
 const { isLeading, isTrailing, leadingIconName, trailingIconName } = useComponentIcons(props)
 
@@ -166,7 +166,7 @@ onMounted(() => {
       :disabled="disabled"
       :required="required"
       :autocomplete="autocomplete"
-      v-bind="$attrs"
+      v-bind="{ ...$attrs, ...ariaAttrs }"
       @input="onInput"
       @blur="onBlur"
       @change="onChange"

src/runtime/components/InputMenu.vue

@@ -178,7 +178,7 @@ const rootProps = useForwardPropsEmits(reactivePick(props, 'as', 'modelValue', '
 const contentProps = toRef(() => defu(props.content, { side: 'bottom', sideOffset: 8, collisionPadding: 8, position: 'popper' }) as ComboboxContentProps)
 const arrowProps = toRef(() => props.arrow as ComboboxArrowProps)
 
-const { emitFormBlur, emitFormChange, emitFormInput, size: formGroupSize, color, id, name, highlight, disabled } = useFormField<InputProps>(props)
+const { emitFormBlur, emitFormChange, emitFormInput, size: formGroupSize, color, id, name, highlight, disabled, ariaAttrs } = useFormField<InputProps>(props)
 const { orientation, size: buttonGroupSize } = useButtonGroup<InputProps>(props)
 const { isLeading, isTrailing, leadingIconName, trailingIconName } = useComponentIcons(toRef(() => defu(props, { trailingIcon: appConfig.ui.icons.chevronDown })))
 
@@ -365,7 +365,7 @@ defineExpose({
         <ComboboxInput v-model="searchTerm" :display-value="displayValue" as-child>
           <TagsInputInput
             ref="inputRef"
-            v-bind="$attrs"
+            v-bind="{ ...$attrs, ...ariaAttrs }"
             :placeholder="placeholder"
             :required="required"
             :class="ui.tagsInput({ class: props.ui?.tagsInput })"
@@ -379,7 +379,7 @@ defineExpose({
         ref="inputRef"
         v-model="searchTerm"
         :display-value="displayValue"
-        v-bind="$attrs"
+        v-bind="{ ...$attrs, ...ariaAttrs }"
         :type="type"
         :placeholder="placeholder"
         :required="required"

src/runtime/components/InputNumber.vue

@@ -92,7 +92,7 @@ defineSlots<InputNumberSlots>()
 
 const rootProps = useForwardPropsEmits(reactivePick(props, 'as', 'modelValue', 'defaultValue', 'min', 'max', 'step', 'formatOptions'), emits)
 
-const { emitFormBlur, emitFormChange, emitFormInput, id, color, size, name, highlight, disabled } = useFormField<InputNumberProps>(props)
+const { emitFormBlur, emitFormChange, emitFormInput, id, color, size, name, highlight, disabled, ariaAttrs } = useFormField<InputNumberProps>(props)
 
 const { t, code: codeLocale } = useLocale()
 const locale = computed(() => props.locale || codeLocale.value)
@@ -152,7 +152,7 @@ defineExpose({
     @update:model-value="onUpdate"
   >
     <NumberFieldInput
-      v-bind="$attrs"
+      v-bind="{ ...$attrs, ...ariaAttrs }"
       ref="inputRef"
       :placeholder="placeholder"
       :required="required"

src/runtime/components/PinInput.vue

@@ -50,7 +50,7 @@ const props = withDefaults(defineProps<PinInputProps>(), {
 const emits = defineEmits<PinInputEmits>()
 
 const rootProps = useForwardPropsEmits(reactivePick(props, 'defaultValue', 'disabled', 'id', 'mask', 'modelValue', 'name', 'otp', 'placeholder', 'required', 'type'), emits)
-const { emitFormInput, emitFormChange, emitFormBlur, size, color, id, name, highlight, disabled } = useFormField<PinInputProps>(props)
+const { emitFormInput, emitFormChange, emitFormBlur, size, color, id, name, highlight, disabled, ariaAttrs } = useFormField<PinInputProps>(props)
 
 const ui = computed(() => pinInput({
   color: color.value,
@@ -77,7 +77,7 @@ function onBlur(event: FocusEvent) {
 
 <template>
   <PinInputRoot
-    v-bind="rootProps"
+    v-bind="{ ...rootProps, ...ariaAttrs }"
     :id="id"
     :name="name"
     :class="ui.root({ class: [props.class, props.ui?.root] })"

src/runtime/components/RadioGroup.vue

@@ -87,7 +87,7 @@ const slots = defineSlots<RadioGroupSlots<T>>()
 
 const rootProps = useForwardPropsEmits(reactivePick(props, 'as', 'modelValue', 'defaultValue', 'orientation', 'loop', 'required'), emits)
 
-const { emitFormChange, emitFormInput, color, name, size, id: _id, disabled } = useFormField<RadioGroupProps<T>>(props, { bind: false })
+const { emitFormChange, emitFormInput, color, name, size, id: _id, disabled, ariaAttrs } = useFormField<RadioGroupProps<T>>(props, { bind: false })
 const id = _id.value ?? useId()
 
 const ui = computed(() => radioGroup({
@@ -147,7 +147,7 @@ function onUpdate(value: any) {
     :class="ui.root({ class: [props.class, props.ui?.root] })"
     @update:model-value="onUpdate"
   >
-    <fieldset :class="ui.fieldset({ class: props.ui?.fieldset })">
+    <fieldset :class="ui.fieldset({ class: props.ui?.fieldset })" v-bind="ariaAttrs">
       <legend v-if="legend || !!slots.legend" :class="ui.legend({ class: props.ui?.legend })">
         <slot name="legend">
           {{ legend }}

src/runtime/components/Select.vue

@@ -129,11 +129,11 @@ const emits = defineEmits<SelectEmits<T, V, M>>()
 const slots = defineSlots<SelectSlots<T, M>>()
 
 const appConfig = useAppConfig()
-const rootProps = useForwardPropsEmits(reactivePick(props, 'modelValue', 'defaultValue', 'open', 'defaultOpen', 'disabled', 'autocomplete', 'required', 'multiple'), emits)
+const rootProps = useForwardPropsEmits(reactivePick(props, 'open', 'defaultOpen', 'disabled', 'autocomplete', 'required', 'multiple'), emits)
 const contentProps = toRef(() => defu(props.content, { side: 'bottom', sideOffset: 8, collisionPadding: 8, position: 'popper' }) as SelectContentProps)
 const arrowProps = toRef(() => props.arrow as SelectArrowProps)
 
-const { emitFormChange, emitFormInput, emitFormBlur, size: formGroupSize, color, id, name, highlight, disabled } = useFormField<InputProps>(props)
+const { emitFormChange, emitFormInput, emitFormBlur, size: formGroupSize, color, id, name, highlight, disabled, ariaAttrs } = useFormField<InputProps>(props)
 const { orientation, size: buttonGroupSize } = useButtonGroup<InputProps>(props)
 const { isLeading, isTrailing, leadingIconName, trailingIconName } = useComponentIcons(toRef(() => defu(props, { trailingIcon: appConfig.ui.icons.chevronDown })))
 
@@ -186,16 +186,17 @@ function onUpdateOpen(value: boolean) {
 <!-- eslint-disable vue/no-template-shadow -->
 <template>
   <SelectRoot
-    :id="id"
     v-slot="{ modelValue, open }"
-    v-bind="rootProps"
     :name="name"
+    v-bind="rootProps"
     :autocomplete="autocomplete"
     :disabled="disabled"
+    :default-value="defaultValue as (AcceptableValue | AcceptableValue[] | undefined)"
+    :model-value="modelValue as (AcceptableValue | AcceptableValue[] | undefined)"
     @update:model-value="onUpdate"
     @update:open="onUpdateOpen"
   >
-    <SelectTrigger :class="ui.base({ class: [props.class, props.ui?.base] })">
+    <SelectTrigger :id="id" :class="ui.base({ class: [props.class, props.ui?.base] })" v-bind="ariaAttrs">
       <span v-if="isLeading || !!avatar || !!slots.leading" :class="ui.leading({ class: props.ui?.leading })">
         <slot name="leading" :model-value="(modelValue as M extends true ? AcceptableValue[] : AcceptableValue)" :open="open" :ui="ui">
           <UIcon v-if="isLeading && leadingIconName" :name="leadingIconName" :class="ui.leadingIcon({ class: props.ui?.leadingIcon })" />

src/runtime/components/SelectMenu.vue

@@ -168,7 +168,7 @@ const contentProps = toRef(() => defu(props.content, { side: 'bottom', sideOffse
 const arrowProps = toRef(() => props.arrow as ComboboxArrowProps)
 const searchInputProps = toRef(() => defu(props.searchInput, { placeholder: t('selectMenu.search'), variant: 'none' }) as InputProps)
 
-const { emitFormBlur, emitFormInput, emitFormChange, size: formGroupSize, color, id, name, highlight, disabled } = useFormField<InputProps>(props)
+const { emitFormBlur, emitFormInput, emitFormChange, size: formGroupSize, color, id, name, highlight, disabled, ariaAttrs } = useFormField<InputProps>(props)
 const { orientation, size: buttonGroupSize } = useButtonGroup<InputProps>(props)
 const { isLeading, isTrailing, leadingIconName, trailingIconName } = useComponentIcons(toRef(() => defu(props, { trailingIcon: appConfig.ui.icons.chevronDown })))
 
@@ -298,7 +298,7 @@ function onUpdateOpen(value: boolean) {
   <ComboboxRoot
     :id="id"
     v-slot="{ modelValue, open }"
-    v-bind="rootProps"
+    v-bind="{ ...rootProps, ...ariaAttrs }"
     ignore-filter
     as-child
     :name="name"

src/runtime/components/Slider.vue

@@ -55,7 +55,7 @@ const modelValue = defineModel<number | number[]>()
 
 const rootProps = useForwardPropsEmits(reactivePick(props, 'as', 'orientation', 'min', 'max', 'step', 'minStepsBetweenThumbs', 'inverted'), emits)
 
-const { id, emitFormChange, emitFormInput, size, color, name, disabled } = useFormField<SliderProps>(props)
+const { id, emitFormChange, emitFormInput, size, color, name, disabled, ariaAttrs } = useFormField<SliderProps>(props)
 
 const defaultSliderValue = computed(() => {
   if (typeof props.defaultValue === 'number') {
@@ -95,7 +95,7 @@ function onChange(value: any) {
 
 <template>
   <SliderRoot
-    v-bind="rootProps"
+    v-bind="{ ...rootProps, ...ariaAttrs }"
     :id="id"
     v-model="sliderValue"
     :name="name"

src/runtime/components/Switch.vue

@@ -68,7 +68,7 @@ const modelValue = defineModel<boolean>({ default: undefined })
 const appConfig = useAppConfig()
 const rootProps = useForwardProps(reactivePick(props, 'required', 'value', 'defaultValue'))
 
-const { id: _id, emitFormChange, emitFormInput, size, color, name, disabled } = useFormField<SwitchProps>(props)
+const { id: _id, emitFormChange, emitFormInput, size, color, name, disabled, ariaAttrs } = useFormField<SwitchProps>(props)
 const id = _id.value ?? useId()
 
 const ui = computed(() => switchTv({
@@ -93,7 +93,7 @@ function onUpdate(value: any) {
     <div :class="ui.container({ class: props.ui?.container })">
       <SwitchRoot
         :id="id"
-        v-bind="rootProps"
+        v-bind="{ ...rootProps, ...ariaAttrs }"
         v-model="modelValue"
         :name="name"
         :disabled="disabled || loading"

src/runtime/components/Textarea.vue

@@ -66,7 +66,7 @@ const emits = defineEmits<TextareaEmits>()
 
 const [modelValue, modelModifiers] = defineModel<string | number>()
 
-const { emitFormBlur, emitFormInput, emitFormChange, size, color, id, name, highlight, disabled } = useFormField<TextareaProps>(props, { deferInputValidation: true })
+const { emitFormBlur, emitFormInput, emitFormChange, size, color, id, name, highlight, disabled, ariaAttrs } = useFormField<TextareaProps>(props, { deferInputValidation: true })
 
 const ui = computed(() => textarea({
   color: color.value,
@@ -185,7 +185,7 @@ onMounted(() => {
       :class="ui.base({ class: props.ui?.base })"
       :disabled="disabled"
       :required="required"
-      v-bind="$attrs"
+      v-bind="{ ...$attrs, ...ariaAttrs }"
       @input="onInput"
       @blur="onBlur"
       @change="onChange"

src/runtime/composables/useFormField.ts

@@ -9,7 +9,6 @@ type Props<T> = {
   name?: string
   size?: GetObjectField<T, 'size'>
   color?: GetObjectField<T, 'color'>
-  legend?: string
   highlight?: boolean
   disabled?: boolean
 }
@@ -29,13 +28,14 @@ export function useFormField<T>(props?: Props<T>, opts?: { bind?: boolean, defer
   const inputId = inject(inputIdInjectionKey, undefined)
 
   if (formField && inputId) {
-    if (opts?.bind === false || props?.legend) {
+    if (opts?.bind === false) {
       // Removes for="..." attribute on label for RadioGroup and alike.
       inputId.value = undefined
     } else if (props?.id) {
       // Updates for="..." attribute on label if props.id is provided.
       inputId.value = props?.id
     }
+
     if (formInputs && formField.value.name && inputId.value) {
       formInputs.value[formField.value.name] = { id: inputId.value, pattern: formField.value.errorPattern }
     }
@@ -77,6 +77,18 @@ export function useFormField<T>(props?: Props<T>, opts?: { bind?: boolean, defer
     disabled: computed(() => formOptions?.value.disabled || props?.disabled),
     emitFormBlur,
     emitFormInput,
-    emitFormChange
+    emitFormChange,
+    ariaAttrs: computed(() => {
+      if (!formField?.value) return
+
+      const descriptiveAttrs = ['error' as const, 'hint' as const, 'description' as const]
+        .filter(type => formField?.value?.[type])
+        .map(type => `${formField?.value.ariaId}-${type}`) || []
+
+      return {
+        'aria-describedby': descriptiveAttrs.join(' '),
+        'aria-invalid': !!formField?.value.error
+      }
+    })
   }
 }

src/runtime/types/form.ts

@@ -83,6 +83,9 @@ export interface FormFieldInjectedOptions<T> {
   eagerValidation?: boolean
   validateOnInputDelay?: number
   errorPattern?: RegExp
+  hint?: string
+  description?: string
+  ariaId: string
 }
 
 export interface ValidateReturnSchema<T> {