# Questionnaire

A step-by-step form that shows one question at a time, with validation, skipping and keyboard shortcuts.

Questionnaire is an open-source component from suiss/ui for React, React Native, SwiftUI and Jetpack Compose. The @esuiss/ui CLI copies its source into your project, so you own the code.

Source: https://ui.suiss.app/docs/components/questionnaire

**React**

**Example**

```tsx
import {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
} from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export default function QuestionnaireDemo() {
  return (
    <div className="w-[28rem]">
      <Questionnaire onSubmit={(event) => event.preventDefault()}>
        <QuestionnaireProgress />
        <QuestionnaireItem name="role" required>
          <QuestionnaireTitle>
            What best describes your role?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            This helps us tailor the setup to your team.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="engineering">
              Engineering
            </QuestionnaireChoice>
            <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
            <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
            <QuestionnaireChoice value="other">
              Something else
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="team-size">
          <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
            <QuestionnaireChoice value="small">
              2 to 10 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="medium">
              11 to 50 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="large">
              More than 50 people
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="company" required>
          <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
          <QuestionnaireInput placeholder="Acme Inc." />
          <QuestionnaireError>
            Enter a company name to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
    </div>
  )
}
```

`Questionnaire` renders a `form` that presents a sequence of questions, one at a time. Each `QuestionnaireItem` is a `fieldset` with a `QuestionnaireTitle`, an optional `QuestionnaireDescription`, an answer area and a `QuestionnaireError`. Answers are either `QuestionnaireChoices` holding `QuestionnaireChoice` cards (with optional `QuestionnaireChoiceDescription`), or a `QuestionnaireInput`.

`QuestionnaireProgress` shows the current position, and `QuestionnaireActions` lays out `QuestionnairePrevious`, `QuestionnaireSkip`, `QuestionnaireNext` and `QuestionnaireSubmit`, which show and hide themselves based on the current question. Use Questionnaire for onboarding flows and surveys; use Field and regular form controls when all fields should be visible at once.

## Installation

### CLI

```bash title="Terminal"
npx shadcn@latest add @esuiss/questionnaire
```

Works in any project with a `components.json`. See [Installation](https://ui.suiss.app/docs/installation#add-components) for the one-line registry setup. Or use the suiss/ui CLI:

```bash title="Terminal"
npx @esuiss/ui@latest add questionnaire
```

### Manual

1. Install the dependencies and add the [`cn` helper](https://ui.suiss.app/docs/installation#the-cn-helper):

```bash title="Terminal"
npm install @base-ui/react @phosphor-icons/react
```

2. Add the pieces it builds on: [Button](https://ui.suiss.app/docs/components/button), `use-questionnaire`.

3. Copy the source into `components/ui/questionnaire.tsx`:

```tsx title="components/ui/questionnaire.tsx"
"use client"

import { mergeProps } from "@base-ui/react/merge-props"
import { useRender } from "@base-ui/react/use-render"
import { CheckIcon } from "@phosphor-icons/react"
import * as React from "react"
import { type Button, buttonVariants } from "@/components/ui/button"
import {
  type QuestionnaireChoiceState,
  QuestionnaireContext,
  type QuestionnaireInputState,
  QuestionnaireItemContext,
  type QuestionnaireItemDefinition,
  type QuestionnaireItemStatus,
  type QuestionnaireShortcutMode,
  type QuestionnaireState,
  useQuestionnaire,
  useQuestionnaireChoice,
  useQuestionnaireContext,
  useQuestionnaireDescription,
  useQuestionnaireError,
  useQuestionnaireInput,
  useQuestionnaireItem,
  useQuestionnaireItemContext,
} from "@/hooks/use-questionnaire"
import { cn } from "@/lib/utils"

type QuestionnaireInputType =
  | "date"
  | "datetime-local"
  | "email"
  | "month"
  | "number"
  | "password"
  | "search"
  | "tel"
  | "text"
  | "time"
  | "url"
  | "week"

type QuestionnaireNavigationState = {
  disabled: boolean
  shortcut: "Enter" | null
  status: QuestionnaireItemStatus | null
  visible: boolean
}

type QuestionnaireNavigationProps = useRender.ComponentProps<
  "button",
  QuestionnaireNavigationState
> &
  Pick<React.ComponentProps<typeof Button>, "size" | "variant">

function toggleAttributes(on: string, off: string) {
  return (value: boolean): Record<string, string> =>
    value ? { [on]: "" } : { [off]: "" }
}

const checkedAttributes = {
  checked: toggleAttributes("data-checked", "data-unchecked"),
}

const QuestionnaireChoiceContext = React.createContext<{
  descriptionId: string
  setDescribed: (described: boolean) => void
} | null>(null)

const QuestionnaireTitleIdContext = React.createContext<string | undefined>(
  undefined
)

function Questionnaire({
  className,
  defaultItem,
  item,
  items,
  noValidate = true,
  onItemChange,
  onReset,
  onSubmit,
  ref,
  shortcuts,
  ...props
}: Omit<React.ComponentProps<"form">, "defaultValue" | "value"> & {
  defaultItem?: string
  item?: string
  items?: readonly QuestionnaireItemDefinition[]
  onItemChange?: (item: string) => void
  shortcuts?: QuestionnaireShortcutMode
}) {
  const questionnaire = useQuestionnaire({
    defaultItem,
    item,
    items,
    noValidate,
    onItemChange,
    onReset,
    onSubmit,
    ref,
    shortcuts,
  })
  const element = useRender({
    defaultTagName: "form",
    ref: questionnaire.ref,
    state: questionnaire.state,
    props: {
      "data-slot": "questionnaire",
      ...mergeProps<"form">(questionnaire.props, props),
      className: cn("flex w-full min-w-0 flex-col gap-6", className),
    },
  })

  return (
    <QuestionnaireContext.Provider value={questionnaire.context}>
      {element}
    </QuestionnaireContext.Provider>
  )
}

function QuestionnaireProgress({
  children,
  className,
  render,
  ...props
}: useRender.ComponentProps<"div", QuestionnaireState>) {
  const { current, first, last, total } = useQuestionnaireContext(
    "QuestionnaireProgress"
  )
  const valueText = total ? `Question ${current} of ${total}` : undefined

  return useRender({
    defaultTagName: "div",
    render,
    state: { current, first, last, total },
    props: {
      "aria-label": "Questionnaire progress",
      "aria-live": "polite",
      "aria-valuemax": total || undefined,
      "aria-valuemin": total ? 1 : undefined,
      "aria-valuenow": total ? current : undefined,
      "aria-valuetext": valueText,
      children: children ?? valueText,
      role: "progressbar",
      "data-slot": "questionnaire-progress",
      className: cn(
        "min-h-[1lh] w-fit min-w-[14ch] text-xs text-muted-foreground tabular-nums",
        className
      ),
      ...props,
    },
  })
}

function QuestionnaireItem({
  "aria-describedby": ariaDescribedBy,
  "aria-keyshortcuts": ariaKeyShortcuts,
  children,
  className,
  disabled = false,
  invalid = false,
  multiple = false,
  name,
  onStatusChange,
  ref,
  required = false,
  ...props
}: Omit<React.ComponentProps<"fieldset">, "name" | "value"> & {
  invalid?: boolean
  multiple?: boolean
  name: string
  onStatusChange?: (status: QuestionnaireItemStatus) => void
  required?: boolean
}) {
  const questionnaireItem = useQuestionnaireItem({
    "aria-describedby": ariaDescribedBy,
    "aria-keyshortcuts": ariaKeyShortcuts,
    disabled,
    invalid,
    multiple,
    name,
    onStatusChange,
    ref,
    required,
  })
  const titleId = React.useId()
  const element = useRender({
    defaultTagName: "fieldset",
    ref: questionnaireItem.ref,
    state: questionnaireItem.state,
    props: {
      ...questionnaireItem.props,
      children,
      "data-slot": "questionnaire-item",
      className: cn(
        "flex min-w-0 flex-col gap-5 border-0 p-0 outline-none",
        className
      ),
      ...props,
    },
  })

  return (
    <QuestionnaireItemContext.Provider value={questionnaireItem.context}>
      <QuestionnaireTitleIdContext.Provider value={titleId}>
        {element}
      </QuestionnaireTitleIdContext.Provider>
    </QuestionnaireItemContext.Provider>
  )
}

function QuestionnaireTitle({
  className,
  render,
  ...props
}: Omit<useRender.ComponentProps<"legend">, "id">) {
  useQuestionnaireItemContext("QuestionnaireTitle")
  const titleId = React.useContext(QuestionnaireTitleIdContext)

  return useRender({
    defaultTagName: "legend",
    render,
    props: {
      id: titleId,
      "data-slot": "questionnaire-title",
      className: cn(
        "text-base font-semibold text-pretty [&:not(:has(~[data-slot=questionnaire-description]))]:mb-5",
        className
      ),
      ...props,
    },
  })
}

function QuestionnaireDescription({
  className,
  id: idProp,
  render,
  ...props
}: useRender.ComponentProps<"p">) {
  const generatedId = React.useId()
  const id = idProp ?? generatedId
  useQuestionnaireDescription(id)

  return useRender({
    defaultTagName: "p",
    render,
    props: {
      id,
      "data-slot": "questionnaire-description",
      className: cn("text-sm text-pretty text-muted-foreground", className),
      ...props,
    },
  })
}

function QuestionnaireChoices({
  className,
  render,
  ...props
}: useRender.ComponentProps<
  "div",
  { shortcuts: QuestionnaireShortcutMode | null }
>) {
  const { shortcuts } = useQuestionnaireItemContext("QuestionnaireChoices")

  return useRender({
    defaultTagName: "div",
    render,
    state: { shortcuts },
    props: {
      "data-slot": "questionnaire-choices",
      className: cn("grid min-w-0 gap-3", className),
      ...props,
    },
  })
}

function QuestionnaireChoice({
  checked,
  children,
  className,
  defaultChecked = false,
  disabled = false,
  onChange,
  render,
  value,
  ...props
}: Omit<
  useRender.ComponentProps<"label", QuestionnaireChoiceState>,
  "onChange"
> & {
  checked?: boolean
  defaultChecked?: boolean
  disabled?: boolean
  onChange?: React.ChangeEventHandler<HTMLInputElement>
  value: string
}) {
  const { inputProps, state } = useQuestionnaireChoice({
    checked,
    defaultChecked,
    disabled,
    onChange,
    value,
  })
  const descriptionId = React.useId()
  const [described, setDescribed] = React.useState(false)
  const choice = React.useMemo(
    () => ({ descriptionId, setDescribed }),
    [descriptionId]
  )
  const input = useRender({
    defaultTagName: "input",
    state,
    stateAttributesMapping: checkedAttributes,
    props: {
      ...inputProps,
      "aria-describedby": described ? descriptionId : undefined,
      "data-slot": "questionnaire-choice-input",
      className: "absolute inset-0 z-10 size-full cursor-pointer opacity-0",
    },
  })

  return useRender({
    defaultTagName: "label",
    render,
    state,
    stateAttributesMapping: checkedAttributes,
    props: {
      "data-slot": "questionnaire-choice",
      className: cn(
        "group/questionnaire-choice relative flex min-h-11 cursor-pointer items-start gap-2.5 rounded-xl border border-border px-4 py-3 text-start text-base transition-colors outline-none select-none hover:bg-accent has-[>input:focus-visible]:border-ring has-[>input:focus-visible]:ring-3 has-[>input:focus-visible]:ring-ring/50 data-invalid:border-destructive data-invalid:bg-destructive/5 dark:data-invalid:bg-destructive/10 data-checked:border-primary data-checked:ring-1 data-checked:ring-primary hover:text-accent-foreground",
        "data-disabled:pointer-events-none data-disabled:cursor-not-allowed data-disabled:opacity-50",
        className
      ),
      ...props,
      children: (
        <>
          {input}
          <span
            aria-hidden="true"
            data-slot="questionnaire-choice-indicator"
            className="pointer-events-none relative flex size-4 shrink-0 translate-y-[--spacing(0.45)] items-center justify-center rounded-xs border border-transparent bg-border group-has-data-[slot=questionnaire-choice-description]/questionnaire-choice:translate-y-0.5 group-data-[type=radio]/questionnaire-choice:rounded-full group-data-checked/questionnaire-choice:border-primary group-data-checked/questionnaire-choice:bg-primary group-data-checked/questionnaire-choice:text-primary-foreground dark:group-data-checked/questionnaire-choice:bg-primary"
          >
            <span
              data-slot="questionnaire-choice-indicator-dot"
              className="hidden size-2 rounded-full bg-primary-foreground group-data-[type=checkbox]/questionnaire-choice:hidden group-data-checked/questionnaire-choice:block dark:size-2.5"
            />
            <CheckIcon
              data-slot="questionnaire-choice-indicator-check"
              className="hidden size-3.5 group-data-[type=radio]/questionnaire-choice:hidden group-data-checked/questionnaire-choice:block"
            />
          </span>
          <span
            data-slot="questionnaire-choice-label"
            className="flex min-w-0 flex-1 flex-col gap-1"
          >
            <QuestionnaireChoiceContext.Provider value={choice}>
              {children}
            </QuestionnaireChoiceContext.Provider>
          </span>
          <span
            aria-hidden="true"
            hidden={state.shortcut === null}
            data-shortcut={state.shortcut ?? undefined}
            data-slot="questionnaire-choice-shortcut"
            className="pointer-events-none ms-auto hidden size-5 shrink-0 translate-y-[--spacing(0.45)] items-center justify-center rounded-full border border-primary/10 bg-background/80 font-mono text-xs leading-none text-muted-foreground group-has-data-[slot=questionnaire-choice-description]/questionnaire-choice:translate-y-0.5 group-data-shortcut/questionnaire-choice:inline-flex max-md:hidden!"
          >
            {state.shortcut}
          </span>
        </>
      ),
    },
  })
}

function QuestionnaireChoiceDescription({
  className,
  ...props
}: React.ComponentProps<"span">) {
  const choice = React.useContext(QuestionnaireChoiceContext)

  React.useLayoutEffect(() => {
    if (!choice) return
    choice.setDescribed(true)
    return () => choice.setDescribed(false)
  }, [choice])

  return (
    <span
      id={choice?.descriptionId}
      aria-hidden={choice ? true : undefined}
      data-slot="questionnaire-choice-description"
      className={cn("text-muted-foreground", className)}
      {...props}
    />
  )
}

function QuestionnaireInput({
  className,
  defaultValue,
  disabled = false,
  onChange,
  ref,
  render,
  type = "text",
  value,
  ...props
}: Omit<
  useRender.ComponentProps<"input", QuestionnaireInputState>,
  "form" | "name" | "type"
> & {
  type?: QuestionnaireInputType
}) {
  const questionnaireInput = useQuestionnaireInput({
    defaultValue,
    disabled,
    onChange,
    ref,
    type,
    value,
  })
  const titleId = React.useContext(QuestionnaireTitleIdContext)
  const input = useRender({
    defaultTagName: "input",
    ref: questionnaireInput.ref,
    render,
    state: questionnaireInput.state,
    stateAttributesMapping: {
      filled: toggleAttributes("data-filled", "data-empty"),
    },
    props: {
      ...(props["aria-label"] === undefined && {
        "aria-labelledby": titleId,
      }),
      ...questionnaireInput.inputProps,
      "data-slot": "questionnaire-input",
      className: cn(
        "h-11 w-full min-w-0 rounded-lg border border-transparent bg-secondary px-3 py-1 text-base transition-[color,box-shadow,background-color] outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 disabled:pointer-events-none disabled:cursor-not-allowed aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:bg-destructive/5 dark:aria-invalid:bg-destructive/10 disabled:opacity-50",
        "selection:bg-primary selection:text-primary-foreground placeholder:text-muted-foreground",
        className
      ),
      ...props,
    },
  })

  return (
    <div
      data-slot="questionnaire-input-wrapper"
      className="relative w-full min-w-0"
    >
      {input}
    </div>
  )
}

function QuestionnaireError({
  children,
  className,
  id: idProp,
  render,
  ...props
}: useRender.ComponentProps<"p", { invalid: boolean }>) {
  const generatedId = React.useId()
  const id = idProp ?? generatedId
  const { invalid, required } = useQuestionnaireError(id)

  return useRender({
    defaultTagName: "p",
    render,
    state: { invalid },
    props: {
      children:
        children ??
        (required
          ? "Choose an answer to continue."
          : "Choose an answer or skip this question."),
      hidden: !invalid,
      id,
      role: invalid ? "alert" : undefined,
      "data-slot": "questionnaire-error",
      className: cn("mt-2 text-sm text-destructive", className),
      ...props,
    },
  })
}

function QuestionnaireActions({
  className,
  ...props
}: React.ComponentProps<"div">) {
  return (
    <div
      data-slot="questionnaire-actions"
      className={cn(
        "grid min-h-11 w-full grid-cols-[minmax(0,1fr)_auto_auto] items-center gap-2 sm:min-h-9",
        className
      )}
      {...props}
    />
  )
}

function useNavigationButton({
  action,
  children,
  className,
  disabled = false,
  label,
  onClick,
  placement,
  render,
  shortcut = null,
  size,
  slot,
  tabIndex,
  type = "button",
  variant,
  visible,
  ...props
}: QuestionnaireNavigationProps & {
  action?: () => void
  label: string
  placement: string
  shortcut?: "Enter" | null
  slot: string
  visible: boolean
}) {
  const { activeItemStatus } = useQuestionnaireContext(label)
  const activeShortcut = visible && !disabled ? shortcut : null

  function handleClick(event: React.MouseEvent<HTMLButtonElement>) {
    onClick?.(event)
    if (!event.defaultPrevented) action?.()
  }

  return useRender({
    defaultTagName: "button",
    render,
    state: {
      disabled,
      shortcut: activeShortcut,
      status: activeItemStatus,
      visible,
    },
    stateAttributesMapping: {
      visible: toggleAttributes("data-visible", "data-hidden"),
    },
    props: {
      "aria-hidden": !visible || undefined,
      "aria-keyshortcuts": activeShortcut ?? undefined,
      children,
      disabled,
      hidden: !visible,
      inert: !visible,
      onClick: action ? handleClick : onClick,
      tabIndex: visible ? tabIndex : -1,
      type,
      "data-slot": slot,
      "data-size": size,
      "data-variant": variant,
      className: cn(buttonVariants({ size, variant }), placement, className),
      ...props,
    },
  })
}

function QuestionnairePrevious({
  children,
  size = "default",
  variant = "outline",
  ...props
}: QuestionnaireNavigationProps) {
  const { first, goPrevious, total } = useQuestionnaireContext(
    "QuestionnairePrevious"
  )

  return useNavigationButton({
    ...props,
    action: goPrevious,
    children: children ?? "Previous",
    label: "QuestionnairePrevious",
    placement: "col-start-1 row-start-1 min-h-11 justify-self-start sm:min-h-0",
    size,
    slot: "questionnaire-previous",
    variant,
    visible: total > 1 && !first,
  })
}

function QuestionnaireSkip({
  children,
  size = "default",
  variant = "outline",
  ...props
}: QuestionnaireNavigationProps) {
  const { activeItemRequired, skipCurrent } =
    useQuestionnaireContext("QuestionnaireSkip")

  return useNavigationButton({
    ...props,
    action: skipCurrent,
    children: children ?? "Skip",
    label: "QuestionnaireSkip",
    placement: "col-start-2 row-start-1 min-h-11 justify-self-end sm:min-h-0",
    size,
    slot: "questionnaire-skip",
    variant,
    visible: activeItemRequired === false,
  })
}

function QuestionnaireNext({
  children,
  size = "default",
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { goNext, last, total } = useQuestionnaireContext("QuestionnaireNext")

  return useNavigationButton({
    ...props,
    action: goNext,
    children: children ?? "Next",
    label: "QuestionnaireNext",
    placement: "col-start-3 row-start-1 min-h-11 justify-self-end sm:min-h-0",
    shortcut: "Enter",
    size,
    slot: "questionnaire-next",
    variant,
    visible: total > 1 && !last,
  })
}

function QuestionnaireSubmit({
  children,
  size = "default",
  type = "submit",
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { last, total } = useQuestionnaireContext("QuestionnaireSubmit")

  return useNavigationButton({
    ...props,
    children: children ?? "Submit",
    label: "QuestionnaireSubmit",
    placement: "col-start-3 row-start-1 min-h-11 justify-self-end sm:min-h-0",
    shortcut: "Enter",
    size,
    slot: "questionnaire-submit",
    type,
    variant,
    visible: total > 0 && last,
  })
}

export {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoiceDescription,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
}
```

4. Update the import paths to match your project.

## Usage

```tsx
import { Questionnaire, QuestionnaireProgress, QuestionnaireItem, QuestionnaireTitle, QuestionnaireDescription, QuestionnaireChoices, QuestionnaireChoice, QuestionnaireChoiceDescription, QuestionnaireInput, QuestionnaireError, QuestionnaireActions, QuestionnairePrevious, QuestionnaireSkip, QuestionnaireNext, QuestionnaireSubmit } from "@/components/ui/questionnaire"
```

```tsx
<div className="w-[28rem]">
  <Questionnaire onSubmit={(event) => event.preventDefault()}>
    <QuestionnaireProgress />
    <QuestionnaireItem name="role" required>
      <QuestionnaireTitle>What best describes your role?</QuestionnaireTitle>
      <QuestionnaireDescription>
        This helps us tailor the setup to your team.
      </QuestionnaireDescription>
      <QuestionnaireChoices>
        <QuestionnaireChoice value="engineering">
          Engineering
        </QuestionnaireChoice>
        <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
        <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
        <QuestionnaireChoice value="other">
          Something else
        </QuestionnaireChoice>
      </QuestionnaireChoices>
      <QuestionnaireError />
    </QuestionnaireItem>
    <QuestionnaireItem name="team-size">
      <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
      <QuestionnaireChoices>
        <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
        <QuestionnaireChoice value="small">
          2 to 10 people
        </QuestionnaireChoice>
        <QuestionnaireChoice value="medium">
          11 to 50 people
        </QuestionnaireChoice>
        <QuestionnaireChoice value="large">
          More than 50 people
        </QuestionnaireChoice>
      </QuestionnaireChoices>
      <QuestionnaireError />
    </QuestionnaireItem>
    <QuestionnaireItem name="company" required>
      <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
      <QuestionnaireInput placeholder="Acme Inc." />
      <QuestionnaireError>
        Enter a company name to continue.
      </QuestionnaireError>
    </QuestionnaireItem>
    <Actions />
  </Questionnaire>
</div>
```

Give every item a unique `name`; answers are submitted as form data under that name. The first item is shown by default. Use `defaultItem` to start elsewhere, or `item` with `onItemChange` to control the active question.

A `required` item blocks Next and Submit until it is answered. An optional item shows the Skip button. Set `multiple` on an item to render its choices as checkboxes instead of radio buttons.

Pass `items` to define the sequence, which items are required or disabled, and the order used for shortcut keys, instead of deriving them from the rendered items. Native browser validation is off by default (`noValidate`); the component runs its own validation on Next and Submit.

## Examples

### With shortcuts

Choices labelled with letter keys, so pressing a letter selects the matching answer.

**Example**

```tsx
import {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
} from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export default function QuestionnaireWithShortcuts() {
  return (
    <div className="w-[28rem]">
      <Questionnaire
        onSubmit={(event) => event.preventDefault()}
        shortcuts="letters"
      >
        <QuestionnaireProgress />
        <QuestionnaireItem name="role" required>
          <QuestionnaireTitle>
            What best describes your role?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            This helps us tailor the setup to your team.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="engineering">
              Engineering
            </QuestionnaireChoice>
            <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
            <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
            <QuestionnaireChoice value="other">
              Something else
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="team-size">
          <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
            <QuestionnaireChoice value="small">
              2 to 10 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="medium">
              11 to 50 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="large">
              More than 50 people
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="company" required>
          <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
          <QuestionnaireInput placeholder="Acme Inc." />
          <QuestionnaireError>
            Enter a company name to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
    </div>
  )
}
```

### Number shortcuts

Choices labelled with number keys from `1` to `9`.

**Example**

```tsx
import {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
} from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export default function QuestionnaireNumberShortcuts() {
  return (
    <div className="w-[28rem]">
      <Questionnaire
        onSubmit={(event) => event.preventDefault()}
        shortcuts="numbers"
      >
        <QuestionnaireProgress />
        <QuestionnaireItem name="role" required>
          <QuestionnaireTitle>
            What best describes your role?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            This helps us tailor the setup to your team.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="engineering">
              Engineering
            </QuestionnaireChoice>
            <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
            <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
            <QuestionnaireChoice value="other">
              Something else
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="team-size">
          <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
            <QuestionnaireChoice value="small">
              2 to 10 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="medium">
              11 to 50 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="large">
              More than 50 people
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="company" required>
          <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
          <QuestionnaireInput placeholder="Acme Inc." />
          <QuestionnaireError>
            Enter a company name to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
    </div>
  )
}
```

### Multiple choice

A `multiple` item with checkboxes, a default selection, a disabled choice and a custom error.

**Example**

```tsx
import {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
} from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export default function QuestionnaireMultipleChoice() {
  return (
    <div className="w-[28rem]">
      <Questionnaire onSubmit={(event) => event.preventDefault()}>
        <QuestionnaireProgress />
        <QuestionnaireItem name="features" multiple required>
          <QuestionnaireTitle>
            Which features do you plan to use?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            Select all that apply.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="analytics" defaultChecked>
              Analytics
            </QuestionnaireChoice>
            <QuestionnaireChoice value="billing">Billing</QuestionnaireChoice>
            <QuestionnaireChoice value="automations">
              Automations
            </QuestionnaireChoice>
            <QuestionnaireChoice value="integrations" disabled>
              Integrations
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError>Choose at least one feature.</QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
    </div>
  )
}
```

### With choice descriptions

Choice cards with a title and a secondary description.

**Example**

```tsx
import {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoiceDescription,
  QuestionnaireChoices,
  QuestionnaireError,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
} from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export default function QuestionnaireWithChoiceDescriptions() {
  return (
    <div className="w-[28rem]">
      <Questionnaire onSubmit={(event) => event.preventDefault()}>
        <QuestionnaireProgress />
        <QuestionnaireItem name="plan" required>
          <QuestionnaireTitle>Which plan fits you best?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="starter">
              Starter
              <QuestionnaireChoiceDescription>
                For individuals trying things out.
              </QuestionnaireChoiceDescription>
            </QuestionnaireChoice>
            <QuestionnaireChoice value="team" defaultChecked>
              Team
              <QuestionnaireChoiceDescription>
                Shared workspaces and roles for growing teams.
              </QuestionnaireChoiceDescription>
            </QuestionnaireChoice>
            <QuestionnaireChoice value="enterprise">
              Enterprise
              <QuestionnaireChoiceDescription>
                Single sign-on, audit logs, and priority support.
              </QuestionnaireChoiceDescription>
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
    </div>
  )
}
```

### Text input

A required email question answered with `QuestionnaireInput`.

**Example**

```tsx
import {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
} from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export default function QuestionnaireTextInput() {
  return (
    <div className="w-[28rem]">
      <Questionnaire onSubmit={(event) => event.preventDefault()}>
        <QuestionnaireProgress />
        <QuestionnaireItem name="email" required>
          <QuestionnaireTitle>
            Where should we send your results?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            We only use your email to share the report.
          </QuestionnaireDescription>
          <QuestionnaireInput type="email" placeholder="you@example.com" />
          <QuestionnaireError>
            Enter an email address to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
    </div>
  )
}
```

### Start on later question

A questionnaire that opens on its second question with `defaultItem`.

**Example**

```tsx
import {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
} from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export default function QuestionnaireStartOnLaterQuestion() {
  return (
    <div className="w-[28rem]">
      <Questionnaire
        onSubmit={(event) => event.preventDefault()}
        defaultItem="team-size"
      >
        <QuestionnaireProgress />
        <QuestionnaireItem name="role" required>
          <QuestionnaireTitle>
            What best describes your role?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            This helps us tailor the setup to your team.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="engineering">
              Engineering
            </QuestionnaireChoice>
            <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
            <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
            <QuestionnaireChoice value="other">
              Something else
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="team-size">
          <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
            <QuestionnaireChoice value="small">
              2 to 10 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="medium">
              11 to 50 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="large">
              More than 50 people
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="company" required>
          <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
          <QuestionnaireInput placeholder="Acme Inc." />
          <QuestionnaireError>
            Enter a company name to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
    </div>
  )
}
```

## API Reference

- `Questionnaire`
- `QuestionnaireProgress`
- `QuestionnaireItem`
  - `QuestionnaireTitle`
  - `QuestionnaireDescription`
  - `QuestionnaireChoices`
    - `QuestionnaireChoice`
      - `QuestionnaireChoiceDescription`
  - `QuestionnaireError`
  - `QuestionnaireInput`

### Questionnaire

The `form` root that tracks the active question and handles navigation and submission.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `defaultItem` | `string` | - | The `name` of the item shown first when uncontrolled. |
| `item` | `string` | - | The `name` of the active item, for controlled use. |
| `items` | `readonly QuestionnaireItemDefinition[]` | - | Optional item definitions with `name`, `required`, `disabled` and `choices`, used to define the sequence and shortcut order. |
| `onItemChange` | `(item: string) => void` | - | Called with the next item's `name` when the active question changes. |
| `shortcuts` | `QuestionnaireShortcutMode` | - | Enables single-key answer shortcuts using `letters` (A to Z) or `numbers` (1 to 9). |

Also accepts the props of `React.ComponentProps<"form">`.

### QuestionnaireProgress

Shows the position as text, such as `Question 2 of 3`, and exposes it to assistive technology with the `progressbar` role.

Also accepts the props of `useRender.ComponentProps<"div", QuestionnaireState>`.

### QuestionnaireItem

A `fieldset` for one question, visible only while it is active.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `invalid` | `boolean` | `false` | Forces the item into the invalid state. |
| `multiple` | `boolean` | `false` | Allows several answers, rendering choices as checkboxes. |
| `name` | `string` | Required | The unique item name, used for navigation and as the form field name. |
| `onStatusChange` | `(status: QuestionnaireItemStatus) => void` | - | Called when the item's status changes between `unanswered`, `answered` and `skipped`. |
| `required` | `boolean` | `false` | Requires an answer before moving on and hides the Skip button. |

Also accepts the props of `React.ComponentProps<"fieldset">`.

### QuestionnaireTitle

The question text, rendered as the fieldset's `legend`.

Also accepts the props of `useRender.ComponentProps<"legend">`.

### QuestionnaireDescription

Supporting text that describes the question.

Also accepts the props of `useRender.ComponentProps<"p">`.

### QuestionnaireChoices

The grid that holds the answer choices.

Also accepts the props of `useRender.ComponentProps< "div", { shortcuts: QuestionnaireShortcutMode | null } >`.

### QuestionnaireChoice

A selectable answer card containing a radio button or checkbox.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `checked` | `boolean` | - | The checked state, for controlled use. |
| `defaultChecked` | `boolean` | `false` | Whether the choice starts checked when uncontrolled. |
| `disabled` | `boolean` | `false` | Prevents the choice from being selected. |
| `onChange` | `React.ChangeEventHandler<HTMLInputElement>` | - | Called when the underlying input changes. |
| `value` | `string` | Required | The value submitted for this choice. |

Also accepts the props of `useRender.ComponentProps<"label", QuestionnaireChoiceState>`.

### QuestionnaireChoiceDescription

Secondary text inside a choice that describes it.

Also accepts the props of `React.ComponentProps<"span">`.

### QuestionnaireInput

A text-style input for free-form answers.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `type` | `QuestionnaireInputType` | `"text"` | The input type, such as `text`, `email`, `number`, `date` or `url`. |

Also accepts the props of `useRender.ComponentProps<"input", QuestionnaireInputState>`.

### QuestionnaireError

The validation message shown when the question needs an answer.

Also accepts the props of `useRender.ComponentProps<"p", { invalid: boolean }>`.

### QuestionnaireActions

Lays out the navigation buttons in one row.

Also accepts the props of `React.ComponentProps<"div">`.

### QuestionnairePrevious

Goes back to the previous question; hidden on the first.

Also accepts the props of `QuestionnaireNavigationProps`.

### QuestionnaireSkip

Skips the current optional question; hidden when the question is required.

Also accepts the props of `QuestionnaireNavigationProps`.

### QuestionnaireNext

Validates the current question and moves to the next; hidden on the last.

Also accepts the props of `QuestionnaireNavigationProps`.

### QuestionnaireSubmit

Submits the form; shown only on the last question.

Also accepts the props of `QuestionnaireNavigationProps`.

## Accessibility

- Each item is a `fieldset` named by its `legend` title; inactive items are `hidden` and `inert`.
- Choices are native radio buttons or checkboxes inside a `label`. A choice description is linked with `aria-describedby`.
- `QuestionnaireInput` is labelled by the question title unless you pass `aria-label`.
- The item's description and, when invalid, its error are linked with `aria-describedby`. The error uses `role="alert"` and focus moves to the invalid answer.
- `QuestionnaireProgress` has `role="progressbar"`, an `aria-label` of `Questionnaire progress`, `aria-valuetext` and `aria-live="polite"`.
- Keyboard: Enter on an answered control advances or submits; Command or Control plus Enter advances from anywhere; ArrowUp and ArrowDown move between answers; outside text fields and radio buttons, ArrowLeft goes back and ArrowRight goes forward once the question has an answer. The active item lists these in `aria-keyshortcuts`.
- Hidden navigation buttons are `aria-hidden`, `inert` and removed from the tab order.

## Notes

- Styling hooks: every part sets a `data-slot`, such as `questionnaire`, `questionnaire-item`, `questionnaire-choice`, `questionnaire-choice-indicator`, `questionnaire-choice-shortcut`, `questionnaire-input` and `questionnaire-error`.
- Choices expose `data-checked` or `data-unchecked`, plus `data-type`, `data-disabled`, `data-invalid` and `data-shortcut`. Inputs expose `data-filled` or `data-empty`. Navigation buttons expose `data-visible` or `data-hidden`.
- Shortcut badges are hidden below the `md` breakpoint.
- The default error text is `Choose an answer to continue.` for required items; pass children to customize it.
- Uses the `primary`, `border`, `secondary`, `destructive` and `accent` colors.

**React Native, SwiftUI, Jetpack Compose**

![Preview](https://ui.suiss.app/previews/components-questionnaire--default.light.webp)

```tsx
import * as React from "react"
import { View } from "react-native"
import { Questionnaire, QuestionnaireActions, QuestionnaireChoice, QuestionnaireChoices, QuestionnaireDescription, QuestionnaireError, QuestionnaireInput, QuestionnaireItem, QuestionnaireNext, QuestionnairePrevious, QuestionnaireProgress, QuestionnaireSkip, QuestionnaireSubmit, QuestionnaireTitle, type QuestionnaireValues } from "@/components/ui/questionnaire"
import { Text } from "@/components/ui/text"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

function Result({ values }: { values: QuestionnaireValues | null }) {
  if (!values) return null
  return (
    <Text role="status" className="text-sm text-muted-foreground">
      {`Submitted: ${JSON.stringify(values)}`}
    </Text>
  )
}

function Onboarding({
  defaultItem,
  attempted = false,
}: {
  defaultItem?: string
  attempted?: boolean
}) {
  const [values, setValues] = React.useState<QuestionnaireValues | null>(null)
  return (
    <View className="w-full gap-4">
      <Questionnaire defaultItem={defaultItem} onSubmit={setValues}>
        <QuestionnaireProgress />
        <QuestionnaireItem name="role" required invalid={attempted}>
          <QuestionnaireTitle>
            What best describes your role?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            This helps us tailor the setup to your team.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="engineering">
              Engineering
            </QuestionnaireChoice>
            <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
            <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
            <QuestionnaireChoice value="other">
              Something else
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="team-size">
          <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
            <QuestionnaireChoice value="small" defaultChecked>
              2 to 10 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="medium">
              11 to 50 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="large">
              More than 50 people
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="company" required>
          <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
          <QuestionnaireInput placeholder="Acme Inc." />
          <QuestionnaireError>
            Enter a company name to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
      <Result values={values} />
    </View>
  )
}

export function QuestionnaireExample() {
  return (
    <Onboarding />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct QuestionnaireStoryActions: View {
  var body: some View {
    QuestionnaireActions {
      QuestionnairePrevious()
      QuestionnaireSkip()
      QuestionnaireNext()
      QuestionnaireSubmit()
    }
  }
}

struct QuestionnaireOnboarding: View {
  var attempted = false

  @State private var controller: QuestionnaireController
  @State private var submitted: String?

  init(defaultItem: String? = nil, attempted: Bool = false) {
    self.attempted = attempted
    _controller = State(initialValue: QuestionnaireController(
      defaultItem: defaultItem,
      defaultValues: ["team-size": ["small"]]
    ))
  }

  var body: some View {
    VStack(alignment: .leading, spacing: 16) {
      Questionnaire(controller: controller) {
        QuestionnaireProgress()
        QuestionnaireItem(name: "role", required: true, invalid: attempted) {
          QuestionnaireTitle("What best describes your role?")
          QuestionnaireDescription("This helps us tailor the setup to your team.")
          QuestionnaireChoices {
            QuestionnaireChoice("Engineering", value: "engineering")
            QuestionnaireChoice("Design", value: "design")
            QuestionnaireChoice("Product", value: "product")
            QuestionnaireChoice("Something else", value: "other")
          }
          QuestionnaireError()
        }
        QuestionnaireItem(name: "team-size") {
          QuestionnaireTitle("How large is your team?")
          QuestionnaireChoices {
            QuestionnaireChoice("Just me", value: "solo")
            QuestionnaireChoice("2 to 10 people", value: "small")
            QuestionnaireChoice("11 to 50 people", value: "medium")
            QuestionnaireChoice("More than 50 people", value: "large")
          }
          QuestionnaireError()
        }
        QuestionnaireItem(name: "company", required: true) {
          QuestionnaireTitle("What is your company called?")
          QuestionnaireInput("Acme Inc.")
          QuestionnaireError("Enter a company name to continue.")
        }
        QuestionnaireStoryActions()
      }
      if let submitted {
        Text(verbatim: submitted)
          .textStyle(.sm)
          .foregroundStyle(EsuissColor.mutedForeground)
          .accessibilityAddTraits(.updatesFrequently)
      }
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .onAppear {
      let controller = controller
      controller.onSubmit = { answers in
        let fields = controller.sequence.compactMap { name -> String? in
          guard let value = answers[name]?.first else { return nil }
          return "\"\(name)\":\"\(value)\""
        }
        submitted = "Submitted: {\(fields.joined(separator: ","))}"
      }
    }
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.Questionnaire
import com.esuiss.ui.components.QuestionnaireActions
import com.esuiss.ui.components.QuestionnaireChoice
import com.esuiss.ui.components.QuestionnaireChoices
import com.esuiss.ui.components.QuestionnaireDescription
import com.esuiss.ui.components.QuestionnaireError
import com.esuiss.ui.components.QuestionnaireInput
import com.esuiss.ui.components.QuestionnaireItem
import com.esuiss.ui.components.QuestionnaireNext
import com.esuiss.ui.components.QuestionnairePrevious
import com.esuiss.ui.components.QuestionnaireProgress
import com.esuiss.ui.components.QuestionnaireSkip
import com.esuiss.ui.components.QuestionnaireSubmit
import com.esuiss.ui.components.QuestionnaireTitle
import com.esuiss.ui.components.Text
import com.esuiss.ui.components.rememberQuestionnaireState
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

fun questionnaireJson(values: Map<String, List<String>>): String =
    values.entries.joinToString(",", "{", "}") { (key, list) ->
        "\"$key\":" + list.joinToString(",", "[", "]") { "\"$it\"" }
    }

@Composable
fun QuestionnaireActionsRow() {
    QuestionnaireActions {
        QuestionnairePrevious()
        QuestionnaireSkip()
        QuestionnaireNext()
        QuestionnaireSubmit()
    }
}

@Composable
fun QuestionnaireResult(values: String?) {
    if (values == null) return
    Text(
        "Submitted: $values",
        modifier = Modifier.semantics { liveRegion = LiveRegionMode.Polite },
        style = Typography.sm,
        color = EsuissTheme.colors.mutedForeground,
    )
}

@Composable
fun QuestionnaireOnboarding(defaultItem: String? = null, attempted: Boolean = false) {
    var values by rememberSaveable { mutableStateOf<String?>(null) }
    val state = rememberQuestionnaireState(defaultItem = defaultItem)
    Column(Modifier.fillMaxWidth(), verticalArrangement = Arrangement.spacedBy(16.dp)) {
        Questionnaire(state = state, onSubmit = { values = questionnaireJson(it) }) {
            QuestionnaireProgress()
            QuestionnaireItem(name = "role", required = true, invalid = attempted) {
                QuestionnaireTitle("What best describes your role?")
                QuestionnaireDescription("This helps us tailor the setup to your team.")
                QuestionnaireChoices {
                    QuestionnaireChoice("Engineering", value = "engineering")
                    QuestionnaireChoice("Design", value = "design")
                    QuestionnaireChoice("Product", value = "product")
                    QuestionnaireChoice("Something else", value = "other")
                }
                QuestionnaireError()
            }
            QuestionnaireItem(name = "team-size") {
                QuestionnaireTitle("How large is your team?")
                QuestionnaireChoices {
                    QuestionnaireChoice("Just me", value = "solo")
                    QuestionnaireChoice("2 to 10 people", value = "small", defaultChecked = true)
                    QuestionnaireChoice("11 to 50 people", value = "medium")
                    QuestionnaireChoice("More than 50 people", value = "large")
                }
                QuestionnaireError()
            }
            QuestionnaireItem(name = "company", required = true) {
                QuestionnaireTitle("What is your company called?")
                QuestionnaireInput(placeholder = "Acme Inc.")
                QuestionnaireError("Enter a company name to continue.")
            }
            QuestionnaireActionsRow()
        }
        QuestionnaireResult(values)
    }
}
```

`Questionnaire` is a `View` that tracks which question is active, collects answers and validates them. Each `QuestionnaireItem` is one question; only the active item is shown, and moving between items slides the content horizontally with a Reanimated keyframe that follows the layout direction.

Items hold `QuestionnaireChoice` rows, which are `Pressable` radios or, with `multiple`, checkboxes, or a `QuestionnaireInput` for a typed answer. `QuestionnaireActions` holds the Previous, Skip, Next and Submit buttons, each of which only appears when it applies.

## Installation

**React Native**

```bash title="Terminal"
npx shadcn@latest add @esuiss-rn/questionnaire
```

See [Installation](https://ui.suiss.app/docs/installation) for the `components.json` setup. Or use the suiss/ui CLI:

```bash title="Terminal"
npx @esuiss/ui@latest add questionnaire
```

**SwiftUI**

```bash title="Terminal"
npx @esuiss/ui@latest add questionnaire --platform swift
```

**Jetpack Compose**

```bash title="Terminal"
npx @esuiss/ui@latest add questionnaire --platform kotlin
```

The CLI also adds what it builds on: [Button](https://ui.suiss.app/docs/components/button), [Icon](https://ui.suiss.app/docs/components/icon), [Input](https://ui.suiss.app/docs/components/input), [Text](https://ui.suiss.app/docs/components/text).

### Manual

**React Native**

**Uniwind**

1. Install the dependencies:

```bash title="Terminal"
npx expo install cn phosphor-react-native react-native-reanimated react-native-svg react-native-worklets
```

2. Add the pieces it builds on: [Button](https://ui.suiss.app/docs/components/button), [Icon](https://ui.suiss.app/docs/components/icon), [Input](https://ui.suiss.app/docs/components/input), [Text](https://ui.suiss.app/docs/components/text), and the primitives `components/primitives/haptics.tsx`, `components/primitives/hooks.tsx`, `components/primitives/use-render.tsx`.

3. Copy the source into `components/ui/questionnaire.tsx`:

```tsx title="uniwind/components/ui/questionnaire.tsx"
import { cn } from "cn"
import { CheckIcon } from "phosphor-react-native"
import * as React from "react"
import {
  type GestureResponderEvent,
  I18nManager,
  Pressable,
  View,
} from "react-native"
import Animated, { Keyframe, ReduceMotion } from "react-native-reanimated"
import { useHaptics } from "@/components/primitives/haptics"
import { useEffectEvent } from "@/components/primitives/hooks"
import { resolveClassName } from "@/components/primitives/use-render"
import { Button, type ButtonProps } from "@/components/ui/button"
import { Icon } from "@/components/ui/icon"
import { Input } from "@/components/ui/input"
import { Text, TextClassContext } from "@/components/ui/text"

type QuestionnaireItemStatus = "unanswered" | "answered" | "skipped"

type QuestionnaireItemDefinition = {
  name: string
  required?: boolean
  disabled?: boolean
}

type QuestionnaireValues = Record<string, string | string[]>

type QuestionnaireState = {
  current: number
  first: boolean
  last: boolean
  total: number
}

type QuestionnaireDirection = "forward" | "backward"

type QuestionnaireAnswer = { choices: string[]; text: string }

type ItemRecord = {
  name: string
  required: boolean
  disabled: boolean
  invalid: boolean
  multiple: boolean
}

type QuestionnaireInputType =
  | "text"
  | "email"
  | "number"
  | "tel"
  | "url"
  | "password"
  | "search"

type QuestionnaireContextValue = QuestionnaireState & {
  activeItemName: string | null
  activeItemRequired: boolean | null
  shownItemName: string | null
  direction: QuestionnaireDirection
  animated: boolean
  values: QuestionnaireValues
  goNext: () => void
  goPrevious: () => void
  skipCurrent: () => void
  submit: () => void
  reset: () => void
  registerItem: (record: ItemRecord) => () => void
  updateItem: (record: ItemRecord) => void
  answerOf: (name: string) => QuestionnaireAnswer
  statusOf: (name: string) => QuestionnaireItemStatus
  invalidOf: (name: string) => boolean
  requiredOf: (name: string) => boolean
  select: (
    name: string,
    value: string,
    selected: boolean,
    multiple: boolean
  ) => void
  setText: (name: string, text: string) => void
  setDefault: (
    name: string,
    answer: { choice?: string; text?: string },
    on: boolean
  ) => void
}

type QuestionnaireItemContextValue = {
  name: string
  multiple: boolean
  required: boolean
  disabled: boolean
  invalid: boolean
  status: QuestionnaireItemStatus
  answer: QuestionnaireAnswer
  titleId: string
}

type UseQuestionnaireParameters = {
  defaultItem?: string
  item?: string
  items?: readonly QuestionnaireItemDefinition[]
  onItemChange?: (item: string) => void
  onSubmit?: (values: QuestionnaireValues) => void
}

const EMPTY: QuestionnaireAnswer = { choices: [], text: "" }

const SHIFT = I18nManager.isRTL ? -48 : 48

const EASING_DURATION = 280

function slideIn(from: number) {
  return new Keyframe({
    0: { opacity: 0, transform: [{ translateX: from }] },
    100: { opacity: 1, transform: [{ translateX: 0 }] },
  })
    .duration(EASING_DURATION)
    .reduceMotion(ReduceMotion.System)
}

function slideOut(to: number) {
  return new Keyframe({
    0: { opacity: 1, transform: [{ translateX: 0 }] },
    100: { opacity: 0, transform: [{ translateX: to }] },
  })
    .duration(200)
    .reduceMotion(ReduceMotion.System)
}

const TRANSITIONS = {
  forward: { entering: slideIn(SHIFT), exiting: slideOut(-SHIFT) },
  backward: { entering: slideIn(-SHIFT), exiting: slideOut(SHIFT) },
}

const QuestionnaireContext =
  React.createContext<QuestionnaireContextValue | null>(null)

const QuestionnaireItemContext =
  React.createContext<QuestionnaireItemContextValue | null>(null)

function useQuestionnaireContext(component = "useQuestionnaireContext") {
  const context = React.useContext(QuestionnaireContext)
  if (!context) {
    throw new Error(`${component} must be used within a <Questionnaire />`)
  }
  return context
}

function useQuestionnaireItemContext(component: string) {
  const context = React.useContext(QuestionnaireItemContext)
  if (!context) {
    throw new Error(`${component} must be used within a <QuestionnaireItem />`)
  }
  return context
}

function hasAnswer(answer: QuestionnaireAnswer) {
  return answer.choices.length > 0 || answer.text.trim().length > 0
}

function withChoice(choices: QuestionnaireAnswer["choices"], value: string) {
  return choices.includes(value) ? choices : [...choices, value]
}

function selectedChoices(
  choices: QuestionnaireAnswer["choices"],
  value: string,
  multiple: boolean
) {
  return multiple ? withChoice(choices, value) : [value]
}

function toggledChoices(
  choices: QuestionnaireAnswer["choices"],
  choice: string,
  on: boolean
) {
  return on
    ? withChoice(choices, choice)
    : choices.filter((entry) => entry !== choice)
}

function defaultText(text: string, on: boolean) {
  return on ? text : ""
}

function wrapText(children: React.ReactNode, className?: string) {
  if (typeof children === "string" || typeof children === "number") {
    return <Text className={className}>{children}</Text>
  }
  return children
}

function useQuestionnaire({
  defaultItem,
  item,
  items,
  onItemChange,
  onSubmit,
}: UseQuestionnaireParameters) {
  const [records, setRecords] = React.useState<ItemRecord[]>([])
  const [answers, setAnswers] = React.useState<
    Record<string, QuestionnaireAnswer>
  >({})
  const [defaults, setDefaults] = React.useState<
    Record<string, QuestionnaireAnswer>
  >({})
  const [skipped, setSkipped] = React.useState<Record<string, boolean>>({})
  const [attempted, setAttempted] = React.useState<Record<string, boolean>>({})
  const [uncontrolledItem, setUncontrolledItem] = React.useState<string | null>(
    defaultItem ?? null
  )
  const [submitRequest, setSubmitRequest] = React.useState(0)
  const defaultsRef = React.useRef(defaults)
  defaultsRef.current = defaults

  const controlled = item !== undefined
  const requested = controlled ? item : uncontrolledItem
  const definitionByName = React.useMemo(
    () => new Map((items ?? []).map((entry) => [entry.name, entry])),
    [items]
  )
  const recordByName = React.useMemo(
    () => new Map(records.map((record) => [record.name, record])),
    [records]
  )
  const sequence = React.useMemo(
    () =>
      (items ?? records)
        .filter((entry) => !entry.disabled)
        .map((entry) => entry.name),
    [items, records]
  )
  const activeItemName =
    requested !== null && sequence.includes(requested)
      ? requested
      : (sequence[0] ?? null)
  const index = activeItemName ? sequence.indexOf(activeItemName) : -1
  const total = sequence.length
  const current = index < 0 ? 0 : index + 1
  const first = total > 0 && index === 0
  const last = total > 0 && index === total - 1

  const [shownItemName, setShownItemName] = React.useState(activeItemName)
  const [lastDirection, setLastDirection] =
    React.useState<QuestionnaireDirection>("forward")
  const [animated, setAnimated] = React.useState(false)
  const shownIndex = shownItemName ? sequence.indexOf(shownItemName) : -1
  const stepDirection: QuestionnaireDirection =
    index > shownIndex ? "forward" : "backward"
  const direction: QuestionnaireDirection =
    shownItemName !== activeItemName && shownIndex >= 0 && index >= 0
      ? stepDirection
      : lastDirection

  React.useLayoutEffect(() => {
    if (shownItemName === activeItemName) return
    setLastDirection(direction)
    setShownItemName(activeItemName)
  }, [shownItemName, activeItemName, direction])

  React.useEffect(() => {
    if (shownItemName !== null && !animated) setAnimated(true)
  }, [shownItemName, animated])

  const answerOf = React.useCallback(
    (name: string) => answers[name] ?? defaults[name] ?? EMPTY,
    [answers, defaults]
  )

  const statusOf = React.useCallback(
    (name: string): QuestionnaireItemStatus => {
      if (skipped[name]) return "skipped"
      return hasAnswer(answerOf(name)) ? "answered" : "unanswered"
    },
    [skipped, answerOf]
  )

  const requiredOf = React.useCallback(
    (name: string) => {
      const definition = definitionByName.get(name)
      if (definition) return !!definition.required
      return recordByName.get(name)?.required ?? false
    },
    [definitionByName, recordByName]
  )

  const satisfied = React.useCallback(
    (name: string) => {
      const record = recordByName.get(name)
      if (!record || record.disabled) return true
      const status = statusOf(name)
      if (status === "skipped" && !requiredOf(name)) return true
      return !record.invalid && status === "answered"
    },
    [recordByName, statusOf, requiredOf]
  )

  const invalidOf = React.useCallback(
    (name: string) => {
      const record = recordByName.get(name)
      if (!record || record.disabled) return false
      if (statusOf(name) === "skipped" && !requiredOf(name)) return false
      return record.invalid || (!!attempted[name] && !satisfied(name))
    },
    [recordByName, statusOf, requiredOf, attempted, satisfied]
  )

  const validate = React.useCallback(
    (name: string) => {
      setAttempted((state) => ({ ...state, [name]: true }))
      return satisfied(name)
    },
    [satisfied]
  )

  const navigate = React.useCallback(
    (name: string) => {
      if (name === activeItemName) return
      if (!controlled) setUncontrolledItem(name)
      onItemChange?.(name)
    },
    [activeItemName, controlled, onItemChange]
  )

  const values = React.useMemo(() => {
    const result: QuestionnaireValues = {}
    for (const name of sequence) {
      if (skipped[name]) continue
      const answer = answers[name] ?? defaults[name] ?? EMPTY
      if (!hasAnswer(answer)) continue
      if (recordByName.get(name)?.multiple) {
        result[name] = answer.text.trim()
          ? [...answer.choices, answer.text]
          : answer.choices
      } else {
        result[name] = answer.choices[0] ?? answer.text
      }
    }
    return result
  }, [sequence, skipped, answers, defaults, recordByName])

  const goPrevious = React.useCallback(() => {
    const previous = sequence[index - 1]
    if (previous) navigate(previous)
  }, [sequence, index, navigate])

  const goNext = React.useCallback(() => {
    const next = sequence[index + 1]
    if (!activeItemName || !next) return
    if (!validate(activeItemName)) return
    navigate(next)
  }, [sequence, index, activeItemName, validate, navigate])

  const submit = React.useCallback(() => {
    const invalid = sequence.find((name) => !validate(name))
    if (invalid) {
      navigate(invalid)
      return
    }
    onSubmit?.(values)
  }, [sequence, validate, navigate, onSubmit, values])

  const runSubmit = useEffectEvent(submit)

  React.useEffect(() => {
    if (submitRequest > 0) runSubmit()
  }, [submitRequest, runSubmit])

  const skipCurrent = React.useCallback(() => {
    if (!activeItemName || requiredOf(activeItemName)) return
    setAnswers((state) => ({ ...state, [activeItemName]: EMPTY }))
    setSkipped((state) => ({ ...state, [activeItemName]: true }))
    if (last) {
      setSubmitRequest((count) => count + 1)
      return
    }
    const next = sequence[index + 1]
    if (next) navigate(next)
  }, [activeItemName, requiredOf, last, sequence, index, navigate])

  const reset = React.useCallback(() => {
    setAnswers({})
    setSkipped({})
    setAttempted({})
    const target =
      defaultItem && sequence.includes(defaultItem) ? defaultItem : sequence[0]
    if (target) navigate(target)
  }, [defaultItem, sequence, navigate])

  const registerItem = React.useCallback((record: ItemRecord) => {
    setRecords((state) => [
      ...state.filter((entry) => entry.name !== record.name),
      record,
    ])
    return () => {
      setRecords((state) => state.filter((entry) => entry.name !== record.name))
    }
  }, [])

  const updateItem = React.useCallback((record: ItemRecord) => {
    setRecords((state) =>
      state.map((entry) => (entry.name === record.name ? record : entry))
    )
  }, [])

  const select = React.useCallback(
    (name: string, value: string, selected: boolean, multiple: boolean) => {
      setSkipped((state) => (state[name] ? { ...state, [name]: false } : state))
      setAnswers((state) => {
        const answer = state[name] ?? defaultsRef.current[name] ?? EMPTY
        const choices = selected
          ? selectedChoices(answer.choices, value, multiple)
          : answer.choices.filter((entry) => entry !== value)
        return { ...state, [name]: { ...answer, choices } }
      })
    },
    []
  )

  const setText = React.useCallback((name: string, text: string) => {
    if (text.trim()) {
      setSkipped((state) => (state[name] ? { ...state, [name]: false } : state))
    }
    setAnswers((state) => {
      const answer = state[name] ?? defaultsRef.current[name] ?? EMPTY
      return { ...state, [name]: { ...answer, text } }
    })
  }, [])

  const setDefault = React.useCallback(
    (name: string, answer: { choice?: string; text?: string }, on: boolean) => {
      setDefaults((state) => {
        const previous = state[name] ?? EMPTY
        const { choice, text } = answer
        const choices =
          choice === undefined
            ? previous.choices
            : toggledChoices(previous.choices, choice, on)
        const nextText =
          text === undefined ? previous.text : defaultText(text, on)
        if (choices === previous.choices && nextText === previous.text) {
          return state
        }
        return { ...state, [name]: { choices, text: nextText } }
      })
    },
    []
  )

  const activeItemRequired =
    activeItemName === null ? null : requiredOf(activeItemName)

  const context = React.useMemo<QuestionnaireContextValue>(
    () => ({
      activeItemName,
      activeItemRequired,
      shownItemName,
      direction,
      animated,
      current,
      first,
      last,
      total,
      values,
      goNext,
      goPrevious,
      skipCurrent,
      submit,
      reset,
      registerItem,
      updateItem,
      answerOf,
      statusOf,
      invalidOf,
      requiredOf,
      select,
      setText,
      setDefault,
    }),
    [
      activeItemName,
      activeItemRequired,
      shownItemName,
      direction,
      animated,
      current,
      first,
      last,
      total,
      values,
      goNext,
      goPrevious,
      skipCurrent,
      submit,
      reset,
      registerItem,
      updateItem,
      answerOf,
      statusOf,
      invalidOf,
      requiredOf,
      select,
      setText,
      setDefault,
    ]
  )

  const state: QuestionnaireState = { current, first, last, total }

  return { context, state }
}

function Questionnaire({
  defaultItem,
  item,
  items,
  onItemChange,
  onSubmit,
  className,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>> &
  UseQuestionnaireParameters) {
  const questionnaire = useQuestionnaire({
    defaultItem,
    item,
    items,
    onItemChange,
    onSubmit,
  })
  return (
    <QuestionnaireContext.Provider value={questionnaire.context}>
      <View
        className={cn("w-full min-w-0 flex-col gap-6", className)}
        {...props}
      />
    </QuestionnaireContext.Provider>
  )
}

function QuestionnaireProgress({
  className,
  children,
  ...props
}: Omit<React.ComponentProps<typeof View>, "children"> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    children?:
      | React.ReactNode
      | ((state: QuestionnaireState) => React.ReactNode)
  }) {
  const { current, first, last, total } = useQuestionnaireContext(
    "QuestionnaireProgress"
  )
  const text = total ? `Question ${current} of ${total}` : undefined
  const content =
    typeof children === "function"
      ? children({ current, first, last, total })
      : children
  return (
    <View
      role="progressbar"
      accessibilityLabel="Questionnaire progress"
      accessibilityLiveRegion="polite"
      accessibilityValue={
        total ? { min: 1, max: total, now: current, text } : undefined
      }
      className={cn("min-h-4 self-start", className)}
      {...props}
    >
      {content === undefined ? (
        <Text className="text-xs text-muted-foreground tabular-nums">
          {text}
        </Text>
      ) : (
        wrapText(content, "text-xs text-muted-foreground tabular-nums")
      )}
    </View>
  )
}

function QuestionnaireItem({
  name,
  required = false,
  disabled = false,
  invalid: invalidProp = false,
  multiple = false,
  onStatusChange,
  className,
  children,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    name: string
    required?: boolean
    disabled?: boolean
    invalid?: boolean
    multiple?: boolean
    onStatusChange?: (status: QuestionnaireItemStatus) => void
  }) {
  const root = useQuestionnaireContext("QuestionnaireItem")
  const titleId = React.useId()
  const record = React.useMemo<ItemRecord>(
    () => ({ name, required, disabled, invalid: invalidProp, multiple }),
    [name, required, disabled, invalidProp, multiple]
  )
  const recordRef = React.useRef(record)
  recordRef.current = record
  const { registerItem, updateItem } = root

  React.useLayoutEffect(
    () => registerItem({ ...recordRef.current, name }),
    [name, registerItem]
  )

  React.useLayoutEffect(() => {
    updateItem(record)
  }, [record, updateItem])

  const status = root.statusOf(name)
  const statusRef = React.useRef(status)
  React.useEffect(() => {
    if (statusRef.current === status) return
    statusRef.current = status
    onStatusChange?.(status)
  }, [status, onStatusChange])

  const answer = root.answerOf(name)
  const invalid = root.invalidOf(name)
  const context = React.useMemo<QuestionnaireItemContextValue>(
    () => ({
      name,
      multiple,
      required: root.requiredOf(name),
      disabled,
      invalid,
      status,
      answer,
      titleId,
    }),
    [
      name,
      multiple,
      root.requiredOf,
      disabled,
      invalid,
      status,
      answer,
      titleId,
    ]
  )
  const shown = !disabled && root.shownItemName === name
  const transition = TRANSITIONS[root.direction]

  return (
    <QuestionnaireItemContext.Provider value={context}>
      {shown ? (
        <Animated.View
          key="shown"
          role={multiple ? "group" : "radiogroup"}
          accessibilityLabelledBy={titleId}
          entering={root.animated ? transition.entering : undefined}
          exiting={transition.exiting}
          className={cn("min-w-0 flex-col gap-5", className)}
          {...props}
        >
          {children}
        </Animated.View>
      ) : (
        <View key="hidden" style={{ display: "none" }}>
          {children}
        </View>
      )}
    </QuestionnaireItemContext.Provider>
  )
}

function QuestionnaireTitle({
  className,
  ...props
}: Omit<React.ComponentProps<typeof Text>, "nativeID"> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { titleId } = useQuestionnaireItemContext("QuestionnaireTitle")
  return (
    <Text
      role="heading"
      nativeID={titleId}
      className={cn("text-base font-semibold", className)}
      {...props}
    />
  )
}

function QuestionnaireDescription({
  className,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  useQuestionnaireItemContext("QuestionnaireDescription")
  return (
    <Text
      className={cn("-mt-3.5 text-sm text-muted-foreground", className)}
      {...props}
    />
  )
}

function QuestionnaireChoices({
  className,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>>) {
  useQuestionnaireItemContext("QuestionnaireChoices")
  return <View className={cn("min-w-0 gap-3", className)} {...props} />
}

function QuestionnaireChoice({
  value,
  checked,
  defaultChecked = false,
  disabled: disabledProp = false,
  onCheckedChange,
  className,
  children,
  onPress,
  accessibilityState,
  ...props
}: Omit<React.ComponentProps<typeof Pressable>, "children"> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    value: string
    checked?: boolean
    defaultChecked?: boolean
    disabled?: boolean
    onCheckedChange?: (checked: boolean) => void
    children?: React.ReactNode
  }) {
  const root = useQuestionnaireContext("QuestionnaireChoice")
  const item = useQuestionnaireItemContext("QuestionnaireChoice")
  const haptics = useHaptics()
  const { name, multiple } = item
  const disabled = item.disabled || disabledProp
  const isChecked =
    item.status !== "skipped" && item.answer.choices.includes(value)
  const { select, setDefault } = root

  React.useLayoutEffect(() => {
    if (!defaultChecked) return
    setDefault(name, { choice: value }, true)
    return () => setDefault(name, { choice: value }, false)
  }, [defaultChecked, name, value, setDefault])

  React.useLayoutEffect(() => {
    if (checked === undefined || checked === isChecked) return
    select(name, value, checked, multiple)
  }, [checked, isChecked, name, value, multiple, select])

  const handlePress = (event: GestureResponderEvent) => {
    onPress?.(event)
    if (disabled) return
    const next = multiple ? !isChecked : true
    if (next === isChecked) return
    onCheckedChange?.(next)
    if (checked !== undefined) return
    select(name, value, next, multiple)
    haptics.selection()
  }

  return (
    <Pressable
      role={multiple ? "checkbox" : "radio"}
      accessibilityState={{
        ...accessibilityState,
        checked: isChecked,
        disabled,
      }}
      disabled={disabled}
      onPress={handlePress}
      className={cn(
        "relative min-h-11 flex-row items-start gap-2.5 rounded-xl border border-border px-4 py-3 active:opacity-80",
        item.invalid &&
          "border-destructive bg-destructive/5 dark:bg-destructive/10",
        isChecked && "border-2 border-primary px-3.75 py-2.75",
        className
      )}
      {...props}
    >
      <View
        className={cn(
          "mt-1 size-4 shrink-0 items-center justify-center bg-border",
          multiple ? "rounded-xs" : "rounded-full",
          isChecked && "bg-primary"
        )}
      >
        {isChecked &&
          (multiple ? (
            <Icon
              as={CheckIcon}
              weight="bold"
              className="size-3.5 text-primary-foreground"
            />
          ) : (
            <View className="size-2 rounded-full bg-primary-foreground dark:size-2.5" />
          ))}
      </View>
      <TextClassContext.Provider
        value={cn(
          "text-base",
          disabled ? "text-foreground opacity-50" : "text-foreground"
        )}
      >
        <View className="min-w-0 flex-1 gap-1">
          {React.Children.map(children, (child) => wrapText(child))}
        </View>
      </TextClassContext.Provider>
    </Pressable>
  )
}

function QuestionnaireChoiceDescription({
  className,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  return <Text className={cn("text-muted-foreground", className)} {...props} />
}

function inputTypeProps(
  type: QuestionnaireInputType
): Partial<React.ComponentProps<typeof Input>> {
  switch (type) {
    case "email":
      return {
        keyboardType: "email-address",
        autoCapitalize: "none",
        autoComplete: "email",
        textContentType: "emailAddress",
      }
    case "number":
      return { keyboardType: "numeric" }
    case "tel":
      return {
        keyboardType: "phone-pad",
        autoComplete: "tel",
        textContentType: "telephoneNumber",
      }
    case "url":
      return {
        keyboardType: "url",
        autoCapitalize: "none",
        textContentType: "URL",
      }
    case "password":
      return {
        secureTextEntry: true,
        autoCapitalize: "none",
        textContentType: "password",
      }
    case "search":
      return { returnKeyType: "search" }
    default:
      return {}
  }
}

function QuestionnaireInput({
  type = "text",
  value,
  defaultValue,
  onValueChange,
  disabled = false,
  className,
  accessibilityLabel,
  ...props
}: Omit<React.ComponentProps<typeof Input>, "name" | "required"> & {
  type?: QuestionnaireInputType
}) {
  const root = useQuestionnaireContext("QuestionnaireInput")
  const item = useQuestionnaireItemContext("QuestionnaireInput")
  const { name } = item
  const { setText, setDefault } = root

  React.useLayoutEffect(() => {
    if (!defaultValue) return
    setDefault(name, { text: defaultValue }, true)
    return () => setDefault(name, { text: defaultValue }, false)
  }, [defaultValue, name, setDefault])

  React.useLayoutEffect(() => {
    if (value !== undefined) setText(name, value)
  }, [value, name, setText])

  return (
    <Input
      {...inputTypeProps(type)}
      value={value ?? item.answer.text}
      onValueChange={(next, details) => {
        onValueChange?.(next, details)
        if (value === undefined && !details.isCanceled) setText(name, next)
      }}
      disabled={item.disabled || disabled}
      accessibilityLabel={accessibilityLabel}
      accessibilityLabelledBy={
        accessibilityLabel === undefined ? item.titleId : undefined
      }
      className={(state) =>
        cn(
          item.invalid &&
            "border-destructive bg-destructive/5 dark:bg-destructive/10",
          resolveClassName(className, state)
        )
      }
      {...props}
    />
  )
}

function QuestionnaireError({
  className,
  children,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { invalid, required } =
    useQuestionnaireItemContext("QuestionnaireError")
  if (!invalid) return null
  return (
    <Text
      role="alert"
      accessibilityLiveRegion="polite"
      className={cn("text-sm text-destructive", className)}
      {...props}
    >
      {children ??
        (required
          ? "Choose an answer to continue."
          : "Choose an answer or skip this question.")}
    </Text>
  )
}

function QuestionnaireActions({
  className,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>>) {
  return (
    <View
      className={cn(
        "min-h-11 w-full flex-row items-center justify-end gap-2",
        className
      )}
      {...props}
    />
  )
}

type QuestionnaireNavigationProps = Omit<ButtonProps, "children"> & {
  children?: React.ReactNode
}

function NavigationButton({
  visible,
  action,
  label,
  children,
  className,
  onPress,
  ...props
}: QuestionnaireNavigationProps & {
  visible: boolean
  action: () => void
  label: string
}) {
  if (!visible) return null
  return (
    <Button
      className={cn("min-h-11", className)}
      onPress={(event) => {
        onPress?.(event)
        action()
      }}
      {...props}
    >
      {wrapText(children ?? label)}
    </Button>
  )
}

function QuestionnairePrevious({
  variant = "outline",
  className,
  ...props
}: QuestionnaireNavigationProps) {
  const { first, total, goPrevious } = useQuestionnaireContext(
    "QuestionnairePrevious"
  )
  return (
    <NavigationButton
      variant={variant}
      className={cn("me-auto", className)}
      visible={total > 1 && !first}
      action={goPrevious}
      label="Previous"
      {...props}
    />
  )
}

function QuestionnaireSkip({
  variant = "outline",
  ...props
}: QuestionnaireNavigationProps) {
  const { activeItemRequired, skipCurrent } =
    useQuestionnaireContext("QuestionnaireSkip")
  return (
    <NavigationButton
      variant={variant}
      visible={activeItemRequired === false}
      action={skipCurrent}
      label="Skip"
      {...props}
    />
  )
}

function QuestionnaireNext({
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { last, total, goNext } = useQuestionnaireContext("QuestionnaireNext")
  return (
    <NavigationButton
      variant={variant}
      visible={total > 1 && !last}
      action={goNext}
      label="Next"
      {...props}
    />
  )
}

function QuestionnaireSubmit({
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { last, total, submit } = useQuestionnaireContext("QuestionnaireSubmit")
  return (
    <NavigationButton
      variant={variant}
      visible={total > 0 && last}
      action={submit}
      label="Submit"
      {...props}
    />
  )
}

export type {
  QuestionnaireItemDefinition,
  QuestionnaireItemStatus,
  QuestionnaireState,
  QuestionnaireValues,
}
export {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoiceDescription,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
  useQuestionnaire,
  useQuestionnaireContext,
}
```

4. Update the import paths to match your project.

**NativeWind**

1. Install the dependencies:

```bash title="Terminal"
npx expo install cn phosphor-react-native react-native-reanimated react-native-svg react-native-worklets
```

2. Add the pieces it builds on: [Button](https://ui.suiss.app/docs/components/button), [Icon](https://ui.suiss.app/docs/components/icon), [Input](https://ui.suiss.app/docs/components/input), [Text](https://ui.suiss.app/docs/components/text), and the primitives `components/primitives/haptics.tsx`, `components/primitives/hooks.tsx`, `components/primitives/use-render.tsx`.

3. Copy the source into `components/ui/questionnaire.tsx`:

```tsx title="nativewind/components/ui/questionnaire.tsx"
import { cn } from "cn"
import { CheckIcon } from "phosphor-react-native"
import * as React from "react"
import {
  type GestureResponderEvent,
  I18nManager,
  Pressable,
  View,
} from "react-native"
import Animated, { Keyframe, ReduceMotion } from "react-native-reanimated"
import { useHaptics } from "@/components/primitives/haptics"
import { useEffectEvent } from "@/components/primitives/hooks"
import { resolveClassName } from "@/components/primitives/use-render"
import { Button, type ButtonProps } from "@/components/ui/button"
import { Icon } from "@/components/ui/icon"
import { Input } from "@/components/ui/input"
import { Text, TextClassContext } from "@/components/ui/text"

type QuestionnaireItemStatus = "unanswered" | "answered" | "skipped"

type QuestionnaireItemDefinition = {
  name: string
  required?: boolean
  disabled?: boolean
}

type QuestionnaireValues = Record<string, string | string[]>

type QuestionnaireState = {
  current: number
  first: boolean
  last: boolean
  total: number
}

type QuestionnaireDirection = "forward" | "backward"

type QuestionnaireAnswer = { choices: string[]; text: string }

type ItemRecord = {
  name: string
  required: boolean
  disabled: boolean
  invalid: boolean
  multiple: boolean
}

type QuestionnaireInputType =
  | "text"
  | "email"
  | "number"
  | "tel"
  | "url"
  | "password"
  | "search"

type QuestionnaireContextValue = QuestionnaireState & {
  activeItemName: string | null
  activeItemRequired: boolean | null
  shownItemName: string | null
  direction: QuestionnaireDirection
  animated: boolean
  values: QuestionnaireValues
  goNext: () => void
  goPrevious: () => void
  skipCurrent: () => void
  submit: () => void
  reset: () => void
  registerItem: (record: ItemRecord) => () => void
  updateItem: (record: ItemRecord) => void
  answerOf: (name: string) => QuestionnaireAnswer
  statusOf: (name: string) => QuestionnaireItemStatus
  invalidOf: (name: string) => boolean
  requiredOf: (name: string) => boolean
  select: (
    name: string,
    value: string,
    selected: boolean,
    multiple: boolean
  ) => void
  setText: (name: string, text: string) => void
  setDefault: (
    name: string,
    answer: { choice?: string; text?: string },
    on: boolean
  ) => void
}

type QuestionnaireItemContextValue = {
  name: string
  multiple: boolean
  required: boolean
  disabled: boolean
  invalid: boolean
  status: QuestionnaireItemStatus
  answer: QuestionnaireAnswer
  titleId: string
}

type UseQuestionnaireParameters = {
  defaultItem?: string
  item?: string
  items?: readonly QuestionnaireItemDefinition[]
  onItemChange?: (item: string) => void
  onSubmit?: (values: QuestionnaireValues) => void
}

const EMPTY: QuestionnaireAnswer = { choices: [], text: "" }

const SHIFT = I18nManager.isRTL ? -48 : 48

const EASING_DURATION = 280

function slideIn(from: number) {
  return new Keyframe({
    0: { opacity: 0, transform: [{ translateX: from }] },
    100: { opacity: 1, transform: [{ translateX: 0 }] },
  })
    .duration(EASING_DURATION)
    .reduceMotion(ReduceMotion.System)
}

function slideOut(to: number) {
  return new Keyframe({
    0: { opacity: 1, transform: [{ translateX: 0 }] },
    100: { opacity: 0, transform: [{ translateX: to }] },
  })
    .duration(200)
    .reduceMotion(ReduceMotion.System)
}

const TRANSITIONS = {
  forward: { entering: slideIn(SHIFT), exiting: slideOut(-SHIFT) },
  backward: { entering: slideIn(-SHIFT), exiting: slideOut(SHIFT) },
}

const QuestionnaireContext =
  React.createContext<QuestionnaireContextValue | null>(null)

const QuestionnaireItemContext =
  React.createContext<QuestionnaireItemContextValue | null>(null)

function useQuestionnaireContext(component = "useQuestionnaireContext") {
  const context = React.useContext(QuestionnaireContext)
  if (!context) {
    throw new Error(`${component} must be used within a <Questionnaire />`)
  }
  return context
}

function useQuestionnaireItemContext(component: string) {
  const context = React.useContext(QuestionnaireItemContext)
  if (!context) {
    throw new Error(`${component} must be used within a <QuestionnaireItem />`)
  }
  return context
}

function hasAnswer(answer: QuestionnaireAnswer) {
  return answer.choices.length > 0 || answer.text.trim().length > 0
}

function withChoice(choices: QuestionnaireAnswer["choices"], value: string) {
  return choices.includes(value) ? choices : [...choices, value]
}

function selectedChoices(
  choices: QuestionnaireAnswer["choices"],
  value: string,
  multiple: boolean
) {
  return multiple ? withChoice(choices, value) : [value]
}

function toggledChoices(
  choices: QuestionnaireAnswer["choices"],
  choice: string,
  on: boolean
) {
  return on
    ? withChoice(choices, choice)
    : choices.filter((entry) => entry !== choice)
}

function defaultText(text: string, on: boolean) {
  return on ? text : ""
}

function wrapText(children: React.ReactNode, className?: string) {
  if (typeof children === "string" || typeof children === "number") {
    return <Text className={className}>{children}</Text>
  }
  return children
}

function useQuestionnaire({
  defaultItem,
  item,
  items,
  onItemChange,
  onSubmit,
}: UseQuestionnaireParameters) {
  const [records, setRecords] = React.useState<ItemRecord[]>([])
  const [answers, setAnswers] = React.useState<
    Record<string, QuestionnaireAnswer>
  >({})
  const [defaults, setDefaults] = React.useState<
    Record<string, QuestionnaireAnswer>
  >({})
  const [skipped, setSkipped] = React.useState<Record<string, boolean>>({})
  const [attempted, setAttempted] = React.useState<Record<string, boolean>>({})
  const [uncontrolledItem, setUncontrolledItem] = React.useState<string | null>(
    defaultItem ?? null
  )
  const [submitRequest, setSubmitRequest] = React.useState(0)
  const defaultsRef = React.useRef(defaults)
  defaultsRef.current = defaults

  const controlled = item !== undefined
  const requested = controlled ? item : uncontrolledItem
  const definitionByName = React.useMemo(
    () => new Map((items ?? []).map((entry) => [entry.name, entry])),
    [items]
  )
  const recordByName = React.useMemo(
    () => new Map(records.map((record) => [record.name, record])),
    [records]
  )
  const sequence = React.useMemo(
    () =>
      (items ?? records)
        .filter((entry) => !entry.disabled)
        .map((entry) => entry.name),
    [items, records]
  )
  const activeItemName =
    requested !== null && sequence.includes(requested)
      ? requested
      : (sequence[0] ?? null)
  const index = activeItemName ? sequence.indexOf(activeItemName) : -1
  const total = sequence.length
  const current = index < 0 ? 0 : index + 1
  const first = total > 0 && index === 0
  const last = total > 0 && index === total - 1

  const [shownItemName, setShownItemName] = React.useState(activeItemName)
  const [lastDirection, setLastDirection] =
    React.useState<QuestionnaireDirection>("forward")
  const [animated, setAnimated] = React.useState(false)
  const shownIndex = shownItemName ? sequence.indexOf(shownItemName) : -1
  const stepDirection: QuestionnaireDirection =
    index > shownIndex ? "forward" : "backward"
  const direction: QuestionnaireDirection =
    shownItemName !== activeItemName && shownIndex >= 0 && index >= 0
      ? stepDirection
      : lastDirection

  React.useLayoutEffect(() => {
    if (shownItemName === activeItemName) return
    setLastDirection(direction)
    setShownItemName(activeItemName)
  }, [shownItemName, activeItemName, direction])

  React.useEffect(() => {
    if (shownItemName !== null && !animated) setAnimated(true)
  }, [shownItemName, animated])

  const answerOf = React.useCallback(
    (name: string) => answers[name] ?? defaults[name] ?? EMPTY,
    [answers, defaults]
  )

  const statusOf = React.useCallback(
    (name: string): QuestionnaireItemStatus => {
      if (skipped[name]) return "skipped"
      return hasAnswer(answerOf(name)) ? "answered" : "unanswered"
    },
    [skipped, answerOf]
  )

  const requiredOf = React.useCallback(
    (name: string) => {
      const definition = definitionByName.get(name)
      if (definition) return !!definition.required
      return recordByName.get(name)?.required ?? false
    },
    [definitionByName, recordByName]
  )

  const satisfied = React.useCallback(
    (name: string) => {
      const record = recordByName.get(name)
      if (!record || record.disabled) return true
      const status = statusOf(name)
      if (status === "skipped" && !requiredOf(name)) return true
      return !record.invalid && status === "answered"
    },
    [recordByName, statusOf, requiredOf]
  )

  const invalidOf = React.useCallback(
    (name: string) => {
      const record = recordByName.get(name)
      if (!record || record.disabled) return false
      if (statusOf(name) === "skipped" && !requiredOf(name)) return false
      return record.invalid || (!!attempted[name] && !satisfied(name))
    },
    [recordByName, statusOf, requiredOf, attempted, satisfied]
  )

  const validate = React.useCallback(
    (name: string) => {
      setAttempted((state) => ({ ...state, [name]: true }))
      return satisfied(name)
    },
    [satisfied]
  )

  const navigate = React.useCallback(
    (name: string) => {
      if (name === activeItemName) return
      if (!controlled) setUncontrolledItem(name)
      onItemChange?.(name)
    },
    [activeItemName, controlled, onItemChange]
  )

  const values = React.useMemo(() => {
    const result: QuestionnaireValues = {}
    for (const name of sequence) {
      if (skipped[name]) continue
      const answer = answers[name] ?? defaults[name] ?? EMPTY
      if (!hasAnswer(answer)) continue
      if (recordByName.get(name)?.multiple) {
        result[name] = answer.text.trim()
          ? [...answer.choices, answer.text]
          : answer.choices
      } else {
        result[name] = answer.choices[0] ?? answer.text
      }
    }
    return result
  }, [sequence, skipped, answers, defaults, recordByName])

  const goPrevious = React.useCallback(() => {
    const previous = sequence[index - 1]
    if (previous) navigate(previous)
  }, [sequence, index, navigate])

  const goNext = React.useCallback(() => {
    const next = sequence[index + 1]
    if (!activeItemName || !next) return
    if (!validate(activeItemName)) return
    navigate(next)
  }, [sequence, index, activeItemName, validate, navigate])

  const submit = React.useCallback(() => {
    const invalid = sequence.find((name) => !validate(name))
    if (invalid) {
      navigate(invalid)
      return
    }
    onSubmit?.(values)
  }, [sequence, validate, navigate, onSubmit, values])

  const runSubmit = useEffectEvent(submit)

  React.useEffect(() => {
    if (submitRequest > 0) runSubmit()
  }, [submitRequest, runSubmit])

  const skipCurrent = React.useCallback(() => {
    if (!activeItemName || requiredOf(activeItemName)) return
    setAnswers((state) => ({ ...state, [activeItemName]: EMPTY }))
    setSkipped((state) => ({ ...state, [activeItemName]: true }))
    if (last) {
      setSubmitRequest((count) => count + 1)
      return
    }
    const next = sequence[index + 1]
    if (next) navigate(next)
  }, [activeItemName, requiredOf, last, sequence, index, navigate])

  const reset = React.useCallback(() => {
    setAnswers({})
    setSkipped({})
    setAttempted({})
    const target =
      defaultItem && sequence.includes(defaultItem) ? defaultItem : sequence[0]
    if (target) navigate(target)
  }, [defaultItem, sequence, navigate])

  const registerItem = React.useCallback((record: ItemRecord) => {
    setRecords((state) => [
      ...state.filter((entry) => entry.name !== record.name),
      record,
    ])
    return () => {
      setRecords((state) => state.filter((entry) => entry.name !== record.name))
    }
  }, [])

  const updateItem = React.useCallback((record: ItemRecord) => {
    setRecords((state) =>
      state.map((entry) => (entry.name === record.name ? record : entry))
    )
  }, [])

  const select = React.useCallback(
    (name: string, value: string, selected: boolean, multiple: boolean) => {
      setSkipped((state) => (state[name] ? { ...state, [name]: false } : state))
      setAnswers((state) => {
        const answer = state[name] ?? defaultsRef.current[name] ?? EMPTY
        const choices = selected
          ? selectedChoices(answer.choices, value, multiple)
          : answer.choices.filter((entry) => entry !== value)
        return { ...state, [name]: { ...answer, choices } }
      })
    },
    []
  )

  const setText = React.useCallback((name: string, text: string) => {
    if (text.trim()) {
      setSkipped((state) => (state[name] ? { ...state, [name]: false } : state))
    }
    setAnswers((state) => {
      const answer = state[name] ?? defaultsRef.current[name] ?? EMPTY
      return { ...state, [name]: { ...answer, text } }
    })
  }, [])

  const setDefault = React.useCallback(
    (name: string, answer: { choice?: string; text?: string }, on: boolean) => {
      setDefaults((state) => {
        const previous = state[name] ?? EMPTY
        const { choice, text } = answer
        const choices =
          choice === undefined
            ? previous.choices
            : toggledChoices(previous.choices, choice, on)
        const nextText =
          text === undefined ? previous.text : defaultText(text, on)
        if (choices === previous.choices && nextText === previous.text) {
          return state
        }
        return { ...state, [name]: { choices, text: nextText } }
      })
    },
    []
  )

  const activeItemRequired =
    activeItemName === null ? null : requiredOf(activeItemName)

  const context = React.useMemo<QuestionnaireContextValue>(
    () => ({
      activeItemName,
      activeItemRequired,
      shownItemName,
      direction,
      animated,
      current,
      first,
      last,
      total,
      values,
      goNext,
      goPrevious,
      skipCurrent,
      submit,
      reset,
      registerItem,
      updateItem,
      answerOf,
      statusOf,
      invalidOf,
      requiredOf,
      select,
      setText,
      setDefault,
    }),
    [
      activeItemName,
      activeItemRequired,
      shownItemName,
      direction,
      animated,
      current,
      first,
      last,
      total,
      values,
      goNext,
      goPrevious,
      skipCurrent,
      submit,
      reset,
      registerItem,
      updateItem,
      answerOf,
      statusOf,
      invalidOf,
      requiredOf,
      select,
      setText,
      setDefault,
    ]
  )

  const state: QuestionnaireState = { current, first, last, total }

  return { context, state }
}

function Questionnaire({
  defaultItem,
  item,
  items,
  onItemChange,
  onSubmit,
  className,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>> &
  UseQuestionnaireParameters) {
  const questionnaire = useQuestionnaire({
    defaultItem,
    item,
    items,
    onItemChange,
    onSubmit,
  })
  return (
    <QuestionnaireContext.Provider value={questionnaire.context}>
      <View
        className={cn("w-full min-w-0 flex-col gap-6", className)}
        {...props}
      />
    </QuestionnaireContext.Provider>
  )
}

function QuestionnaireProgress({
  className,
  children,
  ...props
}: Omit<React.ComponentProps<typeof View>, "children"> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    children?:
      | React.ReactNode
      | ((state: QuestionnaireState) => React.ReactNode)
  }) {
  const { current, first, last, total } = useQuestionnaireContext(
    "QuestionnaireProgress"
  )
  const text = total ? `Question ${current} of ${total}` : undefined
  const content =
    typeof children === "function"
      ? children({ current, first, last, total })
      : children
  return (
    <View
      role="progressbar"
      accessibilityLabel="Questionnaire progress"
      accessibilityLiveRegion="polite"
      accessibilityValue={
        total ? { min: 1, max: total, now: current, text } : undefined
      }
      className={cn("min-h-4 self-start", className)}
      {...props}
    >
      {content === undefined ? (
        <Text className="text-xs text-muted-foreground tabular-nums">
          {text}
        </Text>
      ) : (
        wrapText(content, "text-xs text-muted-foreground tabular-nums")
      )}
    </View>
  )
}

function QuestionnaireItem({
  name,
  required = false,
  disabled = false,
  invalid: invalidProp = false,
  multiple = false,
  onStatusChange,
  className,
  children,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    name: string
    required?: boolean
    disabled?: boolean
    invalid?: boolean
    multiple?: boolean
    onStatusChange?: (status: QuestionnaireItemStatus) => void
  }) {
  const root = useQuestionnaireContext("QuestionnaireItem")
  const titleId = React.useId()
  const record = React.useMemo<ItemRecord>(
    () => ({ name, required, disabled, invalid: invalidProp, multiple }),
    [name, required, disabled, invalidProp, multiple]
  )
  const recordRef = React.useRef(record)
  recordRef.current = record
  const { registerItem, updateItem } = root

  React.useLayoutEffect(
    () => registerItem({ ...recordRef.current, name }),
    [name, registerItem]
  )

  React.useLayoutEffect(() => {
    updateItem(record)
  }, [record, updateItem])

  const status = root.statusOf(name)
  const statusRef = React.useRef(status)
  React.useEffect(() => {
    if (statusRef.current === status) return
    statusRef.current = status
    onStatusChange?.(status)
  }, [status, onStatusChange])

  const answer = root.answerOf(name)
  const invalid = root.invalidOf(name)
  const context = React.useMemo<QuestionnaireItemContextValue>(
    () => ({
      name,
      multiple,
      required: root.requiredOf(name),
      disabled,
      invalid,
      status,
      answer,
      titleId,
    }),
    [
      name,
      multiple,
      root.requiredOf,
      disabled,
      invalid,
      status,
      answer,
      titleId,
    ]
  )
  const shown = !disabled && root.shownItemName === name
  const transition = TRANSITIONS[root.direction]

  return (
    <QuestionnaireItemContext.Provider value={context}>
      {shown ? (
        <Animated.View
          key="shown"
          role={multiple ? "group" : "radiogroup"}
          accessibilityLabelledBy={titleId}
          entering={root.animated ? transition.entering : undefined}
          exiting={transition.exiting}
          className={cn("min-w-0 flex-col gap-5", className)}
          {...props}
        >
          {children}
        </Animated.View>
      ) : (
        <View key="hidden" style={{ display: "none" }}>
          {children}
        </View>
      )}
    </QuestionnaireItemContext.Provider>
  )
}

function QuestionnaireTitle({
  className,
  ...props
}: Omit<React.ComponentProps<typeof Text>, "nativeID"> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { titleId } = useQuestionnaireItemContext("QuestionnaireTitle")
  return (
    <Text
      role="heading"
      nativeID={titleId}
      className={cn("text-base font-semibold", className)}
      {...props}
    />
  )
}

function QuestionnaireDescription({
  className,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  useQuestionnaireItemContext("QuestionnaireDescription")
  return (
    <Text
      className={cn("-mt-3.5 text-sm text-muted-foreground", className)}
      {...props}
    />
  )
}

function QuestionnaireChoices({
  className,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>>) {
  useQuestionnaireItemContext("QuestionnaireChoices")
  return <View className={cn("min-w-0 gap-3", className)} {...props} />
}

function QuestionnaireChoice({
  value,
  checked,
  defaultChecked = false,
  disabled: disabledProp = false,
  onCheckedChange,
  className,
  children,
  onPress,
  accessibilityState,
  ...props
}: Omit<React.ComponentProps<typeof Pressable>, "children"> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    value: string
    checked?: boolean
    defaultChecked?: boolean
    disabled?: boolean
    onCheckedChange?: (checked: boolean) => void
    children?: React.ReactNode
  }) {
  const root = useQuestionnaireContext("QuestionnaireChoice")
  const item = useQuestionnaireItemContext("QuestionnaireChoice")
  const haptics = useHaptics()
  const { name, multiple } = item
  const disabled = item.disabled || disabledProp
  const isChecked =
    item.status !== "skipped" && item.answer.choices.includes(value)
  const { select, setDefault } = root

  React.useLayoutEffect(() => {
    if (!defaultChecked) return
    setDefault(name, { choice: value }, true)
    return () => setDefault(name, { choice: value }, false)
  }, [defaultChecked, name, value, setDefault])

  React.useLayoutEffect(() => {
    if (checked === undefined || checked === isChecked) return
    select(name, value, checked, multiple)
  }, [checked, isChecked, name, value, multiple, select])

  const handlePress = (event: GestureResponderEvent) => {
    onPress?.(event)
    if (disabled) return
    const next = multiple ? !isChecked : true
    if (next === isChecked) return
    onCheckedChange?.(next)
    if (checked !== undefined) return
    select(name, value, next, multiple)
    haptics.selection()
  }

  return (
    <Pressable
      role={multiple ? "checkbox" : "radio"}
      accessibilityState={{
        ...accessibilityState,
        checked: isChecked,
        disabled,
      }}
      disabled={disabled}
      onPress={handlePress}
      className={cn(
        "relative min-h-11 flex-row items-start gap-2.5 rounded-xl border border-border px-4 py-3 active:opacity-80",
        item.invalid &&
          "border-destructive bg-destructive-5 dark:bg-destructive-10",
        isChecked && "border-2 border-primary px-[0.9375rem] py-[0.6875rem]",
        className
      )}
      {...props}
    >
      <View
        className={cn(
          "mt-1 size-4 shrink-0 items-center justify-center bg-border",
          multiple ? "rounded-xs" : "rounded-full",
          isChecked && "bg-primary"
        )}
      >
        {isChecked &&
          (multiple ? (
            <Icon
              as={CheckIcon}
              weight="bold"
              className="size-3.5 text-primary-foreground"
            />
          ) : (
            <View className="size-2 rounded-full bg-primary-foreground dark:size-2.5" />
          ))}
      </View>
      <TextClassContext.Provider
        value={cn(
          "text-base",
          disabled ? "text-foreground opacity-50" : "text-foreground"
        )}
      >
        <View className="min-w-0 flex-1 gap-1">
          {React.Children.map(children, (child) => wrapText(child))}
        </View>
      </TextClassContext.Provider>
    </Pressable>
  )
}

function QuestionnaireChoiceDescription({
  className,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  return <Text className={cn("text-muted-foreground", className)} {...props} />
}

function inputTypeProps(
  type: QuestionnaireInputType
): Partial<React.ComponentProps<typeof Input>> {
  switch (type) {
    case "email":
      return {
        keyboardType: "email-address",
        autoCapitalize: "none",
        autoComplete: "email",
        textContentType: "emailAddress",
      }
    case "number":
      return { keyboardType: "numeric" }
    case "tel":
      return {
        keyboardType: "phone-pad",
        autoComplete: "tel",
        textContentType: "telephoneNumber",
      }
    case "url":
      return {
        keyboardType: "url",
        autoCapitalize: "none",
        textContentType: "URL",
      }
    case "password":
      return {
        secureTextEntry: true,
        autoCapitalize: "none",
        textContentType: "password",
      }
    case "search":
      return { returnKeyType: "search" }
    default:
      return {}
  }
}

function QuestionnaireInput({
  type = "text",
  value,
  defaultValue,
  onValueChange,
  disabled = false,
  className,
  accessibilityLabel,
  ...props
}: Omit<React.ComponentProps<typeof Input>, "name" | "required"> & {
  type?: QuestionnaireInputType
}) {
  const root = useQuestionnaireContext("QuestionnaireInput")
  const item = useQuestionnaireItemContext("QuestionnaireInput")
  const { name } = item
  const { setText, setDefault } = root

  React.useLayoutEffect(() => {
    if (!defaultValue) return
    setDefault(name, { text: defaultValue }, true)
    return () => setDefault(name, { text: defaultValue }, false)
  }, [defaultValue, name, setDefault])

  React.useLayoutEffect(() => {
    if (value !== undefined) setText(name, value)
  }, [value, name, setText])

  return (
    <Input
      {...inputTypeProps(type)}
      value={value ?? item.answer.text}
      onValueChange={(next, details) => {
        onValueChange?.(next, details)
        if (value === undefined && !details.isCanceled) setText(name, next)
      }}
      disabled={item.disabled || disabled}
      accessibilityLabel={accessibilityLabel}
      accessibilityLabelledBy={
        accessibilityLabel === undefined ? item.titleId : undefined
      }
      className={(state) =>
        cn(
          item.invalid &&
            "border-destructive bg-destructive-5 dark:bg-destructive-10",
          resolveClassName(className, state)
        )
      }
      {...props}
    />
  )
}

function QuestionnaireError({
  className,
  children,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { invalid, required } =
    useQuestionnaireItemContext("QuestionnaireError")
  if (!invalid) return null
  return (
    <Text
      role="alert"
      accessibilityLiveRegion="polite"
      className={cn("text-sm text-destructive", className)}
      {...props}
    >
      {children ??
        (required
          ? "Choose an answer to continue."
          : "Choose an answer or skip this question.")}
    </Text>
  )
}

function QuestionnaireActions({
  className,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>>) {
  return (
    <View
      className={cn(
        "min-h-11 w-full flex-row items-center justify-end gap-2",
        className
      )}
      {...props}
    />
  )
}

type QuestionnaireNavigationProps = Omit<ButtonProps, "children"> & {
  children?: React.ReactNode
}

function NavigationButton({
  visible,
  action,
  label,
  children,
  className,
  onPress,
  ...props
}: QuestionnaireNavigationProps & {
  visible: boolean
  action: () => void
  label: string
}) {
  if (!visible) return null
  return (
    <Button
      className={cn("min-h-11", className)}
      onPress={(event) => {
        onPress?.(event)
        action()
      }}
      {...props}
    >
      {wrapText(children ?? label)}
    </Button>
  )
}

function QuestionnairePrevious({
  variant = "outline",
  className,
  ...props
}: QuestionnaireNavigationProps) {
  const { first, total, goPrevious } = useQuestionnaireContext(
    "QuestionnairePrevious"
  )
  return (
    <NavigationButton
      variant={variant}
      className={cn("me-auto", className)}
      visible={total > 1 && !first}
      action={goPrevious}
      label="Previous"
      {...props}
    />
  )
}

function QuestionnaireSkip({
  variant = "outline",
  ...props
}: QuestionnaireNavigationProps) {
  const { activeItemRequired, skipCurrent } =
    useQuestionnaireContext("QuestionnaireSkip")
  return (
    <NavigationButton
      variant={variant}
      visible={activeItemRequired === false}
      action={skipCurrent}
      label="Skip"
      {...props}
    />
  )
}

function QuestionnaireNext({
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { last, total, goNext } = useQuestionnaireContext("QuestionnaireNext")
  return (
    <NavigationButton
      variant={variant}
      visible={total > 1 && !last}
      action={goNext}
      label="Next"
      {...props}
    />
  )
}

function QuestionnaireSubmit({
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { last, total, submit } = useQuestionnaireContext("QuestionnaireSubmit")
  return (
    <NavigationButton
      variant={variant}
      visible={total > 0 && last}
      action={submit}
      label="Submit"
      {...props}
    />
  )
}

export type {
  QuestionnaireItemDefinition,
  QuestionnaireItemStatus,
  QuestionnaireState,
  QuestionnaireValues,
}
export {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoiceDescription,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
  useQuestionnaire,
  useQuestionnaireContext,
}
```

4. Update the import paths to match your project.

**StyleSheet**

1. Install the dependencies:

```bash title="Terminal"
npx expo install phosphor-react-native react-native-reanimated react-native-svg react-native-worklets
```

2. Add the pieces it builds on: [Button](https://ui.suiss.app/docs/components/button), [Icon](https://ui.suiss.app/docs/components/icon), [Input](https://ui.suiss.app/docs/components/input), [Text](https://ui.suiss.app/docs/components/text), and the primitives `components/primitives/haptics.tsx`, `components/primitives/hooks.tsx`, `components/primitives/use-render.tsx`.

3. Copy the source into `components/ui/questionnaire.tsx`:

```tsx title="stylesheet/components/ui/questionnaire.tsx"
import { CheckIcon } from "phosphor-react-native"
import * as React from "react"
import {
  type GestureResponderEvent,
  I18nManager,
  Pressable,
  type PressableStateCallbackType,
  type StyleProp,
  StyleSheet,
  type TextStyle,
  View,
  type ViewStyle,
} from "react-native"
import Animated, { Keyframe, ReduceMotion } from "react-native-reanimated"
import { useHaptics } from "@/components/primitives/haptics"
import { useEffectEvent } from "@/components/primitives/hooks"
import { Button, type ButtonProps } from "@/components/ui/button"
import { Icon } from "@/components/ui/icon"
import { Input } from "@/components/ui/input"
import { Text, TextStyleContext } from "@/components/ui/text"
import { fontSize, radius, useTheme } from "@/components/ui/theme"

type QuestionnaireItemStatus = "unanswered" | "answered" | "skipped"

type QuestionnaireItemDefinition = {
  name: string
  required?: boolean
  disabled?: boolean
}

type QuestionnaireValues = Record<string, string | string[]>

type QuestionnaireState = {
  current: number
  first: boolean
  last: boolean
  total: number
}

type QuestionnaireDirection = "forward" | "backward"

type QuestionnaireAnswer = { choices: string[]; text: string }

type ItemRecord = {
  name: string
  required: boolean
  disabled: boolean
  invalid: boolean
  multiple: boolean
}

type QuestionnaireInputType =
  | "text"
  | "email"
  | "number"
  | "tel"
  | "url"
  | "password"
  | "search"

type QuestionnaireContextValue = QuestionnaireState & {
  activeItemName: string | null
  activeItemRequired: boolean | null
  shownItemName: string | null
  direction: QuestionnaireDirection
  animated: boolean
  values: QuestionnaireValues
  goNext: () => void
  goPrevious: () => void
  skipCurrent: () => void
  submit: () => void
  reset: () => void
  registerItem: (record: ItemRecord) => () => void
  updateItem: (record: ItemRecord) => void
  answerOf: (name: string) => QuestionnaireAnswer
  statusOf: (name: string) => QuestionnaireItemStatus
  invalidOf: (name: string) => boolean
  requiredOf: (name: string) => boolean
  select: (
    name: string,
    value: string,
    selected: boolean,
    multiple: boolean
  ) => void
  setText: (name: string, text: string) => void
  setDefault: (
    name: string,
    answer: { choice?: string; text?: string },
    on: boolean
  ) => void
}

type QuestionnaireItemContextValue = {
  name: string
  multiple: boolean
  required: boolean
  disabled: boolean
  invalid: boolean
  status: QuestionnaireItemStatus
  answer: QuestionnaireAnswer
  titleId: string
}

type UseQuestionnaireParameters = {
  defaultItem?: string
  item?: string
  items?: readonly QuestionnaireItemDefinition[]
  onItemChange?: (item: string) => void
  onSubmit?: (values: QuestionnaireValues) => void
}

const EMPTY: QuestionnaireAnswer = { choices: [], text: "" }

function withChoice(choices: string[], value: string) {
  return choices.includes(value) ? choices : [...choices, value]
}

function selectChoice(
  choices: string[],
  value: string,
  selected: boolean,
  multiple: boolean
) {
  if (!selected) return choices.filter((entry) => entry !== value)
  if (multiple) return withChoice(choices, value)
  return [value]
}

function toggleChoice(choices: string[], value: string, on: boolean) {
  if (on) return withChoice(choices, value)
  return choices.filter((entry) => entry !== value)
}

const SHIFT = I18nManager.isRTL ? -48 : 48

const EASING_DURATION = 280

function slideIn(from: number) {
  return new Keyframe({
    0: { opacity: 0, transform: [{ translateX: from }] },
    100: { opacity: 1, transform: [{ translateX: 0 }] },
  })
    .duration(EASING_DURATION)
    .reduceMotion(ReduceMotion.System)
}

function slideOut(to: number) {
  return new Keyframe({
    0: { opacity: 1, transform: [{ translateX: 0 }] },
    100: { opacity: 0, transform: [{ translateX: to }] },
  })
    .duration(200)
    .reduceMotion(ReduceMotion.System)
}

const TRANSITIONS = {
  forward: { entering: slideIn(SHIFT), exiting: slideOut(-SHIFT) },
  backward: { entering: slideIn(-SHIFT), exiting: slideOut(SHIFT) },
}

const QuestionnaireContext =
  React.createContext<QuestionnaireContextValue | null>(null)

const QuestionnaireItemContext =
  React.createContext<QuestionnaireItemContextValue | null>(null)

function useQuestionnaireContext(component = "useQuestionnaireContext") {
  const context = React.useContext(QuestionnaireContext)
  if (!context) {
    throw new Error(`${component} must be used within a <Questionnaire />`)
  }
  return context
}

function useQuestionnaireItemContext(component: string) {
  const context = React.useContext(QuestionnaireItemContext)
  if (!context) {
    throw new Error(`${component} must be used within a <QuestionnaireItem />`)
  }
  return context
}

function hasAnswer(answer: QuestionnaireAnswer) {
  return answer.choices.length > 0 || answer.text.trim().length > 0
}

function wrapText(children: React.ReactNode, style?: StyleProp<TextStyle>) {
  if (typeof children === "string" || typeof children === "number") {
    return <Text style={style}>{children}</Text>
  }
  return children
}

function withAlpha(color: string, alpha: number) {
  if (!color.startsWith("#") || color.length !== 7) return color
  const r = Number.parseInt(color.slice(1, 3), 16)
  const g = Number.parseInt(color.slice(3, 5), 16)
  const b = Number.parseInt(color.slice(5, 7), 16)
  return `rgba(${r}, ${g}, ${b}, ${alpha})`
}

const styles = StyleSheet.create({
  root: { width: "100%", minWidth: 0, flexDirection: "column", gap: 24 },
  progress: { minHeight: 16, alignSelf: "flex-start" },
  progressText: { ...fontSize.xs, fontVariant: ["tabular-nums"] },
  item: { minWidth: 0, flexDirection: "column", gap: 20 },
  hidden: { display: "none" },
  title: { ...fontSize.base, fontWeight: "600" },
  description: { ...fontSize.sm, marginTop: -14 },
  choices: { minWidth: 0, gap: 12 },
  choice: {
    position: "relative",
    minHeight: 44,
    flexDirection: "row",
    alignItems: "flex-start",
    gap: 10,
    borderRadius: radius.xl,
    borderWidth: 1,
    paddingHorizontal: 16,
    paddingVertical: 12,
  },
  choiceChecked: {
    borderWidth: 2,
    paddingHorizontal: 15,
    paddingVertical: 11,
  },
  indicator: {
    marginTop: 4,
    width: 16,
    height: 16,
    flexShrink: 0,
    alignItems: "center",
    justifyContent: "center",
  },
  dot: { width: 8, height: 8, borderRadius: radius.full },
  dotDark: { width: 10, height: 10 },
  label: { minWidth: 0, flex: 1, gap: 4 },
  error: { ...fontSize.sm },
  actions: {
    minHeight: 44,
    width: "100%",
    flexDirection: "row",
    alignItems: "center",
    justifyContent: "flex-end",
    gap: 8,
  },
  navigation: { minHeight: 44 },
  previous: { marginEnd: "auto" },
})

function useQuestionnaire({
  defaultItem,
  item,
  items,
  onItemChange,
  onSubmit,
}: UseQuestionnaireParameters) {
  const [records, setRecords] = React.useState<ItemRecord[]>([])
  const [answers, setAnswers] = React.useState<
    Record<string, QuestionnaireAnswer>
  >({})
  const [defaults, setDefaults] = React.useState<
    Record<string, QuestionnaireAnswer>
  >({})
  const [skipped, setSkipped] = React.useState<Record<string, boolean>>({})
  const [attempted, setAttempted] = React.useState<Record<string, boolean>>({})
  const [uncontrolledItem, setUncontrolledItem] = React.useState<string | null>(
    defaultItem ?? null
  )
  const [submitRequest, setSubmitRequest] = React.useState(0)
  const defaultsRef = React.useRef(defaults)
  defaultsRef.current = defaults

  const controlled = item !== undefined
  const requested = controlled ? item : uncontrolledItem
  const definitionByName = React.useMemo(
    () => new Map((items ?? []).map((entry) => [entry.name, entry])),
    [items]
  )
  const recordByName = React.useMemo(
    () => new Map(records.map((record) => [record.name, record])),
    [records]
  )
  const sequence = React.useMemo(
    () =>
      (items ?? records)
        .filter((entry) => !entry.disabled)
        .map((entry) => entry.name),
    [items, records]
  )
  const activeItemName =
    requested !== null && sequence.includes(requested)
      ? requested
      : (sequence[0] ?? null)
  const index = activeItemName ? sequence.indexOf(activeItemName) : -1
  const total = sequence.length
  const current = index < 0 ? 0 : index + 1
  const first = total > 0 && index === 0
  const last = total > 0 && index === total - 1

  const [shownItemName, setShownItemName] = React.useState(activeItemName)
  const [lastDirection, setLastDirection] =
    React.useState<QuestionnaireDirection>("forward")
  const [animated, setAnimated] = React.useState(false)
  const shownIndex = shownItemName ? sequence.indexOf(shownItemName) : -1
  let direction = lastDirection
  if (shownItemName !== activeItemName && shownIndex >= 0 && index >= 0) {
    direction = index > shownIndex ? "forward" : "backward"
  }

  React.useLayoutEffect(() => {
    if (shownItemName === activeItemName) return
    setLastDirection(direction)
    setShownItemName(activeItemName)
  }, [shownItemName, activeItemName, direction])

  React.useEffect(() => {
    if (shownItemName !== null && !animated) setAnimated(true)
  }, [shownItemName, animated])

  const answerOf = React.useCallback(
    (name: string) => answers[name] ?? defaults[name] ?? EMPTY,
    [answers, defaults]
  )

  const statusOf = React.useCallback(
    (name: string): QuestionnaireItemStatus => {
      if (skipped[name]) return "skipped"
      return hasAnswer(answerOf(name)) ? "answered" : "unanswered"
    },
    [skipped, answerOf]
  )

  const requiredOf = React.useCallback(
    (name: string) => {
      const definition = definitionByName.get(name)
      if (definition) return !!definition.required
      return recordByName.get(name)?.required ?? false
    },
    [definitionByName, recordByName]
  )

  const satisfied = React.useCallback(
    (name: string) => {
      const record = recordByName.get(name)
      if (!record || record.disabled) return true
      const status = statusOf(name)
      if (status === "skipped" && !requiredOf(name)) return true
      return !record.invalid && status === "answered"
    },
    [recordByName, statusOf, requiredOf]
  )

  const invalidOf = React.useCallback(
    (name: string) => {
      const record = recordByName.get(name)
      if (!record || record.disabled) return false
      if (statusOf(name) === "skipped" && !requiredOf(name)) return false
      return record.invalid || (!!attempted[name] && !satisfied(name))
    },
    [recordByName, statusOf, requiredOf, attempted, satisfied]
  )

  const validate = React.useCallback(
    (name: string) => {
      setAttempted((state) => ({ ...state, [name]: true }))
      return satisfied(name)
    },
    [satisfied]
  )

  const navigate = React.useCallback(
    (name: string) => {
      if (name === activeItemName) return
      if (!controlled) setUncontrolledItem(name)
      onItemChange?.(name)
    },
    [activeItemName, controlled, onItemChange]
  )

  const values = React.useMemo(() => {
    const result: QuestionnaireValues = {}
    for (const name of sequence) {
      if (skipped[name]) continue
      const answer = answers[name] ?? defaults[name] ?? EMPTY
      if (!hasAnswer(answer)) continue
      if (recordByName.get(name)?.multiple) {
        result[name] = answer.text.trim()
          ? [...answer.choices, answer.text]
          : answer.choices
      } else {
        result[name] = answer.choices[0] ?? answer.text
      }
    }
    return result
  }, [sequence, skipped, answers, defaults, recordByName])

  const goPrevious = React.useCallback(() => {
    const previous = sequence[index - 1]
    if (previous) navigate(previous)
  }, [sequence, index, navigate])

  const goNext = React.useCallback(() => {
    const next = sequence[index + 1]
    if (!activeItemName || !next) return
    if (!validate(activeItemName)) return
    navigate(next)
  }, [sequence, index, activeItemName, validate, navigate])

  const submit = React.useCallback(() => {
    const invalid = sequence.find((name) => !validate(name))
    if (invalid) {
      navigate(invalid)
      return
    }
    onSubmit?.(values)
  }, [sequence, validate, navigate, onSubmit, values])

  const runSubmit = useEffectEvent(submit)

  React.useEffect(() => {
    if (submitRequest > 0) runSubmit()
  }, [submitRequest, runSubmit])

  const skipCurrent = React.useCallback(() => {
    if (!activeItemName || requiredOf(activeItemName)) return
    setAnswers((state) => ({ ...state, [activeItemName]: EMPTY }))
    setSkipped((state) => ({ ...state, [activeItemName]: true }))
    if (last) {
      setSubmitRequest((count) => count + 1)
      return
    }
    const next = sequence[index + 1]
    if (next) navigate(next)
  }, [activeItemName, requiredOf, last, sequence, index, navigate])

  const reset = React.useCallback(() => {
    setAnswers({})
    setSkipped({})
    setAttempted({})
    const target =
      defaultItem && sequence.includes(defaultItem) ? defaultItem : sequence[0]
    if (target) navigate(target)
  }, [defaultItem, sequence, navigate])

  const registerItem = React.useCallback((record: ItemRecord) => {
    setRecords((state) => [
      ...state.filter((entry) => entry.name !== record.name),
      record,
    ])
    return () => {
      setRecords((state) => state.filter((entry) => entry.name !== record.name))
    }
  }, [])

  const updateItem = React.useCallback((record: ItemRecord) => {
    setRecords((state) =>
      state.map((entry) => (entry.name === record.name ? record : entry))
    )
  }, [])

  const select = React.useCallback(
    (name: string, value: string, selected: boolean, multiple: boolean) => {
      setSkipped((state) => (state[name] ? { ...state, [name]: false } : state))
      setAnswers((state) => {
        const answer = state[name] ?? defaultsRef.current[name] ?? EMPTY
        const choices = selectChoice(answer.choices, value, selected, multiple)
        return { ...state, [name]: { ...answer, choices } }
      })
    },
    []
  )

  const setText = React.useCallback((name: string, text: string) => {
    if (text.trim()) {
      setSkipped((state) => (state[name] ? { ...state, [name]: false } : state))
    }
    setAnswers((state) => {
      const answer = state[name] ?? defaultsRef.current[name] ?? EMPTY
      return { ...state, [name]: { ...answer, text } }
    })
  }, [])

  const setDefault = React.useCallback(
    (name: string, answer: { choice?: string; text?: string }, on: boolean) => {
      setDefaults((state) => {
        const previous = state[name] ?? EMPTY
        const { choice, text } = answer
        const choices =
          choice === undefined
            ? previous.choices
            : toggleChoice(previous.choices, choice, on)
        let nextText = previous.text
        if (text !== undefined) nextText = on ? text : ""
        if (choices === previous.choices && nextText === previous.text) {
          return state
        }
        return { ...state, [name]: { choices, text: nextText } }
      })
    },
    []
  )

  const activeItemRequired =
    activeItemName === null ? null : requiredOf(activeItemName)

  const context = React.useMemo<QuestionnaireContextValue>(
    () => ({
      activeItemName,
      activeItemRequired,
      shownItemName,
      direction,
      animated,
      current,
      first,
      last,
      total,
      values,
      goNext,
      goPrevious,
      skipCurrent,
      submit,
      reset,
      registerItem,
      updateItem,
      answerOf,
      statusOf,
      invalidOf,
      requiredOf,
      select,
      setText,
      setDefault,
    }),
    [
      activeItemName,
      activeItemRequired,
      shownItemName,
      direction,
      animated,
      current,
      first,
      last,
      total,
      values,
      goNext,
      goPrevious,
      skipCurrent,
      submit,
      reset,
      registerItem,
      updateItem,
      answerOf,
      statusOf,
      invalidOf,
      requiredOf,
      select,
      setText,
      setDefault,
    ]
  )

  const state: QuestionnaireState = { current, first, last, total }

  return { context, state }
}

function Questionnaire({
  defaultItem,
  item,
  items,
  onItemChange,
  onSubmit,
  style,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>> &
  UseQuestionnaireParameters) {
  const questionnaire = useQuestionnaire({
    defaultItem,
    item,
    items,
    onItemChange,
    onSubmit,
  })
  return (
    <QuestionnaireContext.Provider value={questionnaire.context}>
      <View style={[styles.root, style]} {...props} />
    </QuestionnaireContext.Provider>
  )
}

function QuestionnaireProgress({
  style,
  children,
  ...props
}: Omit<React.ComponentProps<typeof View>, "children"> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    children?:
      | React.ReactNode
      | ((state: QuestionnaireState) => React.ReactNode)
  }) {
  const { colors } = useTheme()
  const { current, first, last, total } = useQuestionnaireContext(
    "QuestionnaireProgress"
  )
  const text = total ? `Question ${current} of ${total}` : undefined
  const content =
    typeof children === "function"
      ? children({ current, first, last, total })
      : children
  const textStyle = [styles.progressText, { color: colors.mutedForeground }]
  return (
    <View
      role="progressbar"
      accessibilityLabel="Questionnaire progress"
      accessibilityLiveRegion="polite"
      accessibilityValue={
        total ? { min: 1, max: total, now: current, text } : undefined
      }
      style={[styles.progress, style]}
      {...props}
    >
      {content === undefined ? (
        <Text style={textStyle}>{text}</Text>
      ) : (
        wrapText(content, textStyle)
      )}
    </View>
  )
}

function QuestionnaireItem({
  name,
  required = false,
  disabled = false,
  invalid: invalidProp = false,
  multiple = false,
  onStatusChange,
  style,
  children,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    name: string
    required?: boolean
    disabled?: boolean
    invalid?: boolean
    multiple?: boolean
    onStatusChange?: (status: QuestionnaireItemStatus) => void
  }) {
  const root = useQuestionnaireContext("QuestionnaireItem")
  const titleId = React.useId()
  const record = React.useMemo<ItemRecord>(
    () => ({ name, required, disabled, invalid: invalidProp, multiple }),
    [name, required, disabled, invalidProp, multiple]
  )
  const recordRef = React.useRef(record)
  recordRef.current = record
  const { registerItem, updateItem } = root

  React.useLayoutEffect(
    () => registerItem({ ...recordRef.current, name }),
    [name, registerItem]
  )

  React.useLayoutEffect(() => {
    updateItem(record)
  }, [record, updateItem])

  const status = root.statusOf(name)
  const statusRef = React.useRef(status)
  React.useEffect(() => {
    if (statusRef.current === status) return
    statusRef.current = status
    onStatusChange?.(status)
  }, [status, onStatusChange])

  const answer = root.answerOf(name)
  const invalid = root.invalidOf(name)
  const context = React.useMemo<QuestionnaireItemContextValue>(
    () => ({
      name,
      multiple,
      required: root.requiredOf(name),
      disabled,
      invalid,
      status,
      answer,
      titleId,
    }),
    [
      name,
      multiple,
      root.requiredOf,
      disabled,
      invalid,
      status,
      answer,
      titleId,
    ]
  )
  const shown = !disabled && root.shownItemName === name
  const transition = TRANSITIONS[root.direction]

  return (
    <QuestionnaireItemContext.Provider value={context}>
      {shown ? (
        <Animated.View
          key="shown"
          role={multiple ? "group" : "radiogroup"}
          accessibilityLabelledBy={titleId}
          entering={root.animated ? transition.entering : undefined}
          exiting={transition.exiting}
          style={[styles.item, style]}
          {...props}
        >
          {children}
        </Animated.View>
      ) : (
        <View key="hidden" style={styles.hidden}>
          {children}
        </View>
      )}
    </QuestionnaireItemContext.Provider>
  )
}

function QuestionnaireTitle({
  style,
  ...props
}: Omit<React.ComponentProps<typeof Text>, "nativeID"> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { titleId } = useQuestionnaireItemContext("QuestionnaireTitle")
  return (
    <Text
      role="heading"
      nativeID={titleId}
      style={[styles.title, style]}
      {...props}
    />
  )
}

function QuestionnaireDescription({
  style,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { colors } = useTheme()
  useQuestionnaireItemContext("QuestionnaireDescription")
  return (
    <Text
      style={[styles.description, { color: colors.mutedForeground }, style]}
      {...props}
    />
  )
}

function QuestionnaireChoices({
  style,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>>) {
  useQuestionnaireItemContext("QuestionnaireChoices")
  return <View style={[styles.choices, style]} {...props} />
}

function QuestionnaireChoice({
  value,
  checked,
  defaultChecked = false,
  disabled: disabledProp = false,
  onCheckedChange,
  style,
  children,
  onPress,
  accessibilityState,
  ...props
}: Omit<React.ComponentProps<typeof Pressable>, "children" | "style"> &
  React.RefAttributes<React.ComponentRef<typeof View>> & {
    value: string
    checked?: boolean
    defaultChecked?: boolean
    disabled?: boolean
    onCheckedChange?: (checked: boolean) => void
    children?: React.ReactNode
    style?:
      | StyleProp<ViewStyle>
      | ((state: PressableStateCallbackType) => StyleProp<ViewStyle>)
  }) {
  const { colors, isDark } = useTheme()
  const root = useQuestionnaireContext("QuestionnaireChoice")
  const item = useQuestionnaireItemContext("QuestionnaireChoice")
  const haptics = useHaptics()
  const { name, multiple } = item
  const disabled = item.disabled || disabledProp
  const isChecked =
    item.status !== "skipped" && item.answer.choices.includes(value)
  const { select, setDefault } = root

  React.useLayoutEffect(() => {
    if (!defaultChecked) return
    setDefault(name, { choice: value }, true)
    return () => setDefault(name, { choice: value }, false)
  }, [defaultChecked, name, value, setDefault])

  React.useLayoutEffect(() => {
    if (checked === undefined || checked === isChecked) return
    select(name, value, checked, multiple)
  }, [checked, isChecked, name, value, multiple, select])

  const handlePress = (event: GestureResponderEvent) => {
    onPress?.(event)
    if (disabled) return
    const next = multiple ? !isChecked : true
    if (next === isChecked) return
    onCheckedChange?.(next)
    if (checked !== undefined) return
    select(name, value, next, multiple)
    haptics.selection()
  }

  const mark = multiple ? (
    <Icon
      as={CheckIcon}
      weight="bold"
      size={14}
      color={colors.primaryForeground}
    />
  ) : (
    <View
      style={[
        styles.dot,
        isDark && styles.dotDark,
        { backgroundColor: colors.primaryForeground },
      ]}
    />
  )
  return (
    <Pressable
      role={multiple ? "checkbox" : "radio"}
      accessibilityState={{
        ...accessibilityState,
        checked: isChecked,
        disabled,
      }}
      disabled={disabled}
      onPress={handlePress}
      style={(state) => [
        styles.choice,
        { borderColor: colors.border },
        state.pressed && { opacity: 0.8 },
        disabled && { opacity: 0.5 },
        item.invalid && {
          borderColor: colors.destructive,
          backgroundColor: withAlpha(colors.destructive, isDark ? 0.1 : 0.05),
        },
        isChecked && [styles.choiceChecked, { borderColor: colors.primary }],
        typeof style === "function" ? style(state) : style,
      ]}
      {...props}
    >
      <View
        style={[
          styles.indicator,
          {
            borderRadius: multiple ? radius.xs : radius.full,
            backgroundColor: isChecked ? colors.primary : colors.border,
          },
        ]}
      >
        {isChecked ? mark : null}
      </View>
      <TextStyleContext.Provider
        value={{
          ...fontSize.base,
          color: colors.foreground,
        }}
      >
        <View style={styles.label}>
          {React.Children.map(children, (child) => wrapText(child))}
        </View>
      </TextStyleContext.Provider>
    </Pressable>
  )
}

function QuestionnaireChoiceDescription({
  style,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { colors } = useTheme()
  return <Text style={[{ color: colors.mutedForeground }, style]} {...props} />
}

function inputTypeProps(
  type: QuestionnaireInputType
): Partial<React.ComponentProps<typeof Input>> {
  switch (type) {
    case "email":
      return {
        keyboardType: "email-address",
        autoCapitalize: "none",
        autoComplete: "email",
        textContentType: "emailAddress",
      }
    case "number":
      return { keyboardType: "numeric" }
    case "tel":
      return {
        keyboardType: "phone-pad",
        autoComplete: "tel",
        textContentType: "telephoneNumber",
      }
    case "url":
      return {
        keyboardType: "url",
        autoCapitalize: "none",
        textContentType: "URL",
      }
    case "password":
      return {
        secureTextEntry: true,
        autoCapitalize: "none",
        textContentType: "password",
      }
    case "search":
      return { returnKeyType: "search" }
    default:
      return {}
  }
}

function QuestionnaireInput({
  type = "text",
  value,
  defaultValue,
  onValueChange,
  disabled = false,
  style,
  accessibilityLabel,
  ...props
}: Omit<React.ComponentProps<typeof Input>, "name" | "required"> & {
  type?: QuestionnaireInputType
}) {
  const { colors, isDark } = useTheme()
  const root = useQuestionnaireContext("QuestionnaireInput")
  const item = useQuestionnaireItemContext("QuestionnaireInput")
  const { name } = item
  const { setText, setDefault } = root

  React.useLayoutEffect(() => {
    if (!defaultValue) return
    setDefault(name, { text: defaultValue }, true)
    return () => setDefault(name, { text: defaultValue }, false)
  }, [defaultValue, name, setDefault])

  React.useLayoutEffect(() => {
    if (value !== undefined) setText(name, value)
  }, [value, name, setText])

  return (
    <Input
      {...inputTypeProps(type)}
      value={value ?? item.answer.text}
      onValueChange={(next, details) => {
        onValueChange?.(next, details)
        if (value === undefined && !details.isCanceled) setText(name, next)
      }}
      disabled={item.disabled || disabled}
      accessibilityLabel={accessibilityLabel}
      accessibilityLabelledBy={
        accessibilityLabel === undefined ? item.titleId : undefined
      }
      style={(state) => [
        item.invalid && {
          borderColor: colors.destructive,
          backgroundColor: withAlpha(colors.destructive, isDark ? 0.1 : 0.05),
        },
        typeof style === "function" ? style(state) : style,
      ]}
      {...props}
    />
  )
}

function QuestionnaireError({
  style,
  children,
  ...props
}: React.ComponentProps<typeof Text> &
  React.RefAttributes<React.ComponentRef<typeof Text>>) {
  const { colors } = useTheme()
  const { invalid, required } =
    useQuestionnaireItemContext("QuestionnaireError")
  if (!invalid) return null
  return (
    <Text
      role="alert"
      accessibilityLiveRegion="polite"
      style={[styles.error, { color: colors.destructive }, style]}
      {...props}
    >
      {children ??
        (required
          ? "Choose an answer to continue."
          : "Choose an answer or skip this question.")}
    </Text>
  )
}

function QuestionnaireActions({
  style,
  ...props
}: React.ComponentProps<typeof View> &
  React.RefAttributes<React.ComponentRef<typeof View>>) {
  return <View style={[styles.actions, style]} {...props} />
}

type QuestionnaireNavigationProps = Omit<ButtonProps, "children"> & {
  children?: React.ReactNode
}

function NavigationButton({
  visible,
  action,
  label,
  children,
  style,
  onPress,
  ...props
}: QuestionnaireNavigationProps & {
  visible: boolean
  action: () => void
  label: string
}) {
  if (!visible) return null
  return (
    <Button
      style={(state) => [
        styles.navigation,
        typeof style === "function" ? style(state) : style,
      ]}
      onPress={(event) => {
        onPress?.(event)
        action()
      }}
      {...props}
    >
      {wrapText(children ?? label)}
    </Button>
  )
}

function QuestionnairePrevious({
  variant = "outline",
  style,
  ...props
}: QuestionnaireNavigationProps) {
  const { first, total, goPrevious } = useQuestionnaireContext(
    "QuestionnairePrevious"
  )
  return (
    <NavigationButton
      variant={variant}
      style={(state) => [
        styles.previous,
        typeof style === "function" ? style(state) : style,
      ]}
      visible={total > 1 && !first}
      action={goPrevious}
      label="Previous"
      {...props}
    />
  )
}
function QuestionnaireSkip({
  variant = "outline",
  ...props
}: QuestionnaireNavigationProps) {
  const { activeItemRequired, skipCurrent } =
    useQuestionnaireContext("QuestionnaireSkip")
  return (
    <NavigationButton
      variant={variant}
      visible={activeItemRequired === false}
      action={skipCurrent}
      label="Skip"
      {...props}
    />
  )
}

function QuestionnaireNext({
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { last, total, goNext } = useQuestionnaireContext("QuestionnaireNext")
  return (
    <NavigationButton
      variant={variant}
      visible={total > 1 && !last}
      action={goNext}
      label="Next"
      {...props}
    />
  )
}

function QuestionnaireSubmit({
  variant = "default",
  ...props
}: QuestionnaireNavigationProps) {
  const { last, total, submit } = useQuestionnaireContext("QuestionnaireSubmit")
  return (
    <NavigationButton
      variant={variant}
      visible={total > 0 && last}
      action={submit}
      label="Submit"
      {...props}
    />
  )
}

export type {
  QuestionnaireItemDefinition,
  QuestionnaireItemStatus,
  QuestionnaireState,
  QuestionnaireValues,
}
export {
  Questionnaire,
  QuestionnaireActions,
  QuestionnaireChoice,
  QuestionnaireChoiceDescription,
  QuestionnaireChoices,
  QuestionnaireDescription,
  QuestionnaireError,
  QuestionnaireInput,
  QuestionnaireItem,
  QuestionnaireNext,
  QuestionnairePrevious,
  QuestionnaireProgress,
  QuestionnaireSkip,
  QuestionnaireSubmit,
  QuestionnaireTitle,
  useQuestionnaire,
  useQuestionnaireContext,
}
```

4. Update the import paths to match your project.

**SwiftUI**

1. Target iOS 17 or later.

2. Add the Swift package to your app:

```swift title="Package.swift"
.package(url: "https://github.com/phosphor-icons/swift", from: "2.1.0")
```

3. Copy the theme files every view uses:

- `swift/Theme/Theme.swift`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/swiftui/Sources/EsuissUI/Theme/Theme.swift)

- `swift/Theme/Tokens.swift`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/swiftui/Sources/EsuissUI/Theme/Tokens.swift)

4. Copy the source and every file it uses:

```swift title="swift/Components/Questionnaire.swift"
import Observation
import PhosphorSwift
import SwiftUI

public enum QuestionnaireItemStatus: CaseIterable, Sendable {
  case unanswered, answered, skipped
}

public enum QuestionnaireDirection: Sendable {
  case forward, backward
}

public struct QuestionnaireItemDefinition: Hashable, Sendable {
  public var name: String
  public var required: Bool
  public var multiple: Bool
  public var disabled: Bool
  public var invalid: Bool

  public init(_ name: String, required: Bool = false, multiple: Bool = false, disabled: Bool = false, invalid: Bool = false) {
    self.name = name
    self.required = required
    self.multiple = multiple
    self.disabled = disabled
    self.invalid = invalid
  }
}

@MainActor
@Observable
public final class QuestionnaireController {
  public private(set) var activeItem: String?
  public private(set) var direction: QuestionnaireDirection = .forward
  public var values: [String: [String]]

  public var onItemChange: ((String) -> Void)?
  public var onSubmit: (([String: [String]]) -> Void)?

  private(set) var registered: [QuestionnaireItemDefinition] = []
  private(set) var skipped: Set<String> = []
  private(set) var attempted: Set<String> = []

  @ObservationIgnored private let explicitItems: [QuestionnaireItemDefinition]?
  @ObservationIgnored private let defaultItem: String?
  @ObservationIgnored private let defaultValues: [String: [String]]

  public init(
    items: [QuestionnaireItemDefinition]? = nil,
    defaultItem: String? = nil,
    defaultValues: [String: [String]] = [:]
  ) {
    explicitItems = items
    self.defaultItem = defaultItem
    self.defaultValues = defaultValues
    values = defaultValues
    activeItem = QuestionnaireController.initialItem(in: items ?? [], preferred: defaultItem)
  }

  var definitions: [QuestionnaireItemDefinition] {
    explicitItems ?? registered
  }

  public var sequence: [String] {
    definitions.filter { !$0.disabled }.map(\.name)
  }

  public var total: Int { sequence.count }

  var index: Int? {
    guard let activeItem else { return nil }
    return sequence.firstIndex(of: activeItem)
  }

  public var current: Int { index.map { $0 + 1 } ?? 0 }

  public var isFirst: Bool { total > 0 && index == 0 }

  public var isLast: Bool { total > 0 && index == total - 1 }

  public var activeItemRequired: Bool? {
    guard let activeItem, index != nil else { return nil }
    return definition(activeItem)?.required ?? false
  }

  public var activeItemStatus: QuestionnaireItemStatus? {
    guard let activeItem, index != nil else { return nil }
    return status(of: activeItem)
  }

  func definition(_ name: String) -> QuestionnaireItemDefinition? {
    definitions.first { $0.name == name }
  }

  public func status(of name: String) -> QuestionnaireItemStatus {
    if skipped.contains(name) { return .skipped }
    return hasAnswer(name) ? .answered : .unanswered
  }

  func hasAnswer(_ name: String) -> Bool {
    (values[name] ?? []).contains { !$0.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty }
  }

  func isSatisfied(_ name: String) -> Bool {
    let definition = definition(name) ?? QuestionnaireItemDefinition(name)
    if definition.disabled { return true }
    let status = status(of: name)
    if status == .skipped && !definition.required { return true }
    return !definition.invalid && status == .answered
  }

  public func isInvalid(_ name: String) -> Bool {
    let definition = definition(name) ?? QuestionnaireItemDefinition(name)
    if definition.disabled { return false }
    if status(of: name) == .skipped && !definition.required { return false }
    return definition.invalid || (attempted.contains(name) && !isSatisfied(name))
  }

  public func isSelected(_ value: String, in name: String) -> Bool {
    !skipped.contains(name) && (values[name] ?? []).contains(value)
  }

  public func select(_ value: String, in name: String, selected: Bool = true) {
    guard let definition = definition(name), !definition.disabled else { return }
    skipped.remove(name)
    var current = values[name] ?? []
    if !selected {
      current.removeAll { $0 == value }
    } else if definition.multiple {
      if !current.contains(value) { current.append(value) }
    } else {
      current = [value]
    }
    values[name] = current
  }

  public func toggle(_ value: String, in name: String) {
    let multiple = definition(name)?.multiple ?? false
    let selected = isSelected(value, in: name)
    select(value, in: name, selected: multiple ? !selected : true)
  }

  public func text(for name: String) -> String {
    values[name]?.first ?? ""
  }

  public func setText(_ text: String, for name: String) {
    if !text.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty { skipped.remove(name) }
    values[name] = [text]
  }

  @discardableResult
  public func validate(_ name: String) -> Bool {
    attempted.insert(name)
    return isSatisfied(name)
  }

  public func go(to name: String) {
    guard name != activeItem, sequence.contains(name) else { return }
    let from = index ?? -1
    let to = sequence.firstIndex(of: name) ?? 0
    direction = to >= from ? .forward : .backward
    activeItem = name
    onItemChange?(name)
  }

  public func goPrevious() {
    guard let index, index > 0 else { return }
    go(to: sequence[index - 1])
  }

  @discardableResult
  public func goNext() -> Bool {
    guard let index, let activeItem, index + 1 < sequence.count else { return false }
    guard validate(activeItem) else { return false }
    go(to: sequence[index + 1])
    return true
  }

  @discardableResult
  public func advance() -> Bool {
    guard let activeItem else { return false }
    guard validate(activeItem) else { return false }
    if isLast { return submit() }
    return goNext()
  }

  @discardableResult
  public func skip() -> Bool {
    guard let activeItem, let index, activeItemRequired == false else { return false }
    values[activeItem] = []
    skipped.insert(activeItem)
    if index + 1 < sequence.count {
      go(to: sequence[index + 1])
      return true
    }
    return submit()
  }

  @discardableResult
  public func submit() -> Bool {
    for name in sequence where !validate(name) {
      go(to: name)
      return false
    }
    onSubmit?(answers)
    return true
  }

  public var answers: [String: [String]] {
    var result: [String: [String]] = [:]
    for name in sequence where !skipped.contains(name) {
      let entries = (values[name] ?? []).filter { !$0.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty }
      if !entries.isEmpty { result[name] = entries }
    }
    return result
  }

  public func reset() {
    values = defaultValues
    skipped = []
    attempted = []
    if let target = QuestionnaireController.initialItem(in: definitions, preferred: defaultItem) {
      go(to: target)
    }
  }

  func register(_ items: [QuestionnaireItemDefinition]) {
    var seen = Set<String>()
    let unique = items.filter { seen.insert($0.name).inserted }
    if unique != registered { registered = unique }
    guard explicitItems == nil else { return }
    if index == nil, let target = QuestionnaireController.initialItem(in: unique, preferred: activeItem ?? defaultItem) {
      if activeItem == nil {
        activeItem = target
      } else {
        go(to: target)
      }
    }
  }

  static func initialItem(in items: [QuestionnaireItemDefinition], preferred: String?) -> String? {
    if let preferred, let match = items.first(where: { $0.name == preferred }), !match.disabled {
      return match.name
    }
    return items.first { !$0.disabled }?.name
  }
}

struct QuestionnaireItemsKey: PreferenceKey {
  static var defaultValue: [QuestionnaireItemDefinition] { [] }

  static func reduce(value: inout [QuestionnaireItemDefinition], nextValue: () -> [QuestionnaireItemDefinition]) {
    value.append(contentsOf: nextValue())
  }
}

struct QuestionnaireSlotKey: LayoutValueKey {
  static let defaultValue = false
}

struct QuestionnaireItemContext {
  var name: String
  var multiple: Bool
  var invalid: Bool
  var disabled: Bool
}

extension EnvironmentValues {
  @Entry var questionnaire: QuestionnaireController?
  @Entry var questionnaireDisplayed: String?
  @Entry var questionnaireItem: QuestionnaireItemContext?
}

struct QuestionnaireLayout: Layout {
  let spacing: CGFloat

  private func rows(_ subviews: Subviews, width: CGFloat?) -> [(indices: [Int], height: CGFloat)] {
    var rows: [(indices: [Int], height: CGFloat)] = []
    var slot: Int?
    for (offset, subview) in subviews.enumerated() {
      let size = subview.sizeThatFits(ProposedViewSize(width: width, height: nil))
      if subview[QuestionnaireSlotKey.self] {
        if let slot {
          rows[slot].indices.append(offset)
          rows[slot].height = max(rows[slot].height, size.height)
        } else {
          slot = rows.count
          rows.append((indices: [offset], height: size.height))
        }
      } else {
        rows.append((indices: [offset], height: size.height))
      }
    }
    return rows
  }

  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    let visible = rows(subviews, width: proposal.width).filter { $0.height > 0 }
    let height = visible.reduce(0) { $0 + $1.height } + spacing * CGFloat(max(visible.count - 1, 0))
    let width = proposal.width ?? subviews.map { $0.sizeThatFits(.unspecified).width }.max() ?? 0
    return CGSize(width: width, height: height)
  }

  func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
    var y = bounds.minY
    for row in rows(subviews, width: bounds.width) {
      for index in row.indices {
        subviews[index].place(
          at: CGPoint(x: bounds.minX, y: y),
          anchor: .topLeading,
          proposal: ProposedViewSize(width: bounds.width, height: nil)
        )
      }
      if row.height > 0 { y += row.height + spacing }
    }
  }
}

public struct Questionnaire<Content: View>: View {
  let controller: QuestionnaireController
  let content: Content

  @State private var displayed: String?
  @Environment(\.accessibilityReduceMotion) private var reduceMotion

  public init(controller: QuestionnaireController, @ViewBuilder content: () -> Content) {
    self.controller = controller
    self.content = content()
    _displayed = State(initialValue: controller.activeItem)
  }

  public var body: some View {
    let controller = controller
    QuestionnaireLayout(spacing: 24) {
      content
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .environment(\.questionnaire, controller)
    .environment(\.questionnaireDisplayed, displayed ?? controller.activeItem)
    .onPreferenceChange(QuestionnaireItemsKey.self) { items in
      MainActor.assumeIsolated { controller.register(items) }
    }
    .onChange(of: controller.activeItem) { _, name in
      let animation: Animation = reduceMotion ? .linear(duration: 0.2) : .timingCurve(0.32, 0.72, 0, 1, duration: 0.45)
      withAnimation(animation) { displayed = name }
    }
  }
}

public struct QuestionnaireProgress<Label: View>: View {
  let label: (Int, Int) -> Label

  @Environment(\.questionnaire) private var questionnaire

  public init(@ViewBuilder label: @escaping (_ current: Int, _ total: Int) -> Label) {
    self.label = label
  }

  public var body: some View {
    let current = questionnaire?.current ?? 0
    let total = questionnaire?.total ?? 0
    label(current, total)
      .scaledFont(.xs)
      .monospacedDigit()
      .foregroundStyle(EsuissColor.mutedForeground)
      .frame(minHeight: TextStyle.xs.lineHeight, alignment: .leading)
      .accessibilityElement(children: .ignore)
      .accessibilityLabel(Text("Questionnaire progress"))
      .accessibilityValue(total > 0 ? Text("Question \(current) of \(total)") : Text(verbatim: ""))
  }
}

extension QuestionnaireProgress where Label == Text {
  public init() {
    self.init { current, total in
      total > 0 ? Text("Question \(current) of \(total)") : Text(verbatim: " ")
    }
  }
}

public struct QuestionnaireItem<Content: View>: View {
  let definition: QuestionnaireItemDefinition
  let onStatusChange: ((QuestionnaireItemStatus) -> Void)?
  let content: Content

  @Environment(\.questionnaire) private var questionnaire
  @Environment(\.questionnaireDisplayed) private var displayed

  public init(
    name: String,
    required: Bool = false,
    multiple: Bool = false,
    disabled: Bool = false,
    invalid: Bool = false,
    onStatusChange: ((QuestionnaireItemStatus) -> Void)? = nil,
    @ViewBuilder content: () -> Content
  ) {
    definition = QuestionnaireItemDefinition(name, required: required, multiple: multiple, disabled: disabled, invalid: invalid)
    self.onStatusChange = onStatusChange
    self.content = content()
  }

  public var body: some View {
    let name = definition.name
    let active = !definition.disabled && displayed == name
    let forward = questionnaire?.direction != .backward
    let multiple = questionnaire?.definition(name)?.multiple ?? definition.multiple
    let invalid = questionnaire?.isInvalid(name) ?? definition.invalid
    let status = questionnaire?.status(of: name) ?? .unanswered
    ZStack(alignment: .topLeading) {
      if active {
        VStack(alignment: .leading, spacing: 20) {
          content
        }
        .frame(maxWidth: .infinity, alignment: .leading)
        .environment(\.questionnaireItem, QuestionnaireItemContext(name: name, multiple: multiple, invalid: invalid, disabled: definition.disabled))
        .environment(\.isInvalid, invalid)
        .accessibilityElement(children: .contain)
        .transition(
          .asymmetric(
            insertion: .move(edge: forward ? .trailing : .leading),
            removal: .move(edge: forward ? .leading : .trailing)
          )
          .combined(with: .opacity)
        )
      }
    }
    .layoutValue(key: QuestionnaireSlotKey.self, value: true)
    .preference(key: QuestionnaireItemsKey.self, value: [definition])
    .onChange(of: status) { _, value in onStatusChange?(value) }
  }
}

public struct QuestionnaireTitle: View {
  let text: Text

  public init(_ title: LocalizedStringKey) {
    text = Text(title)
  }

  public init(verbatim title: String) {
    text = Text(verbatim: title)
  }

  public var body: some View {
    text
      .scaledTextStyle(.base, weight: .semibold)
      .foregroundStyle(EsuissColor.foreground)
      .fixedSize(horizontal: false, vertical: true)
      .accessibilityAddTraits(.isHeader)
  }
}

public struct QuestionnaireDescription: View {
  let text: Text

  public init(_ description: LocalizedStringKey) {
    text = Text(description)
  }

  public init(verbatim description: String) {
    text = Text(verbatim: description)
  }

  public var body: some View {
    text
      .scaledTextStyle(.sm)
      .foregroundStyle(EsuissColor.mutedForeground)
      .fixedSize(horizontal: false, vertical: true)
      .padding(.top, -16)
  }
}

public struct QuestionnaireChoices<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    VStack(alignment: .leading, spacing: 12) {
      content
    }
    .accessibilityElement(children: .contain)
  }
}

public struct QuestionnaireChoice<Label: View>: View {
  let value: String
  let disabled: Bool
  let label: Label

  @Environment(\.questionnaire) private var questionnaire
  @Environment(\.questionnaireItem) private var item
  @Environment(\.isEnabled) private var isEnabled
  @Environment(\.colorScheme) private var colorScheme
  @State private var taps = 0

  public init(value: String, disabled: Bool = false, @ViewBuilder label: () -> Label) {
    self.value = value
    self.disabled = disabled
    self.label = label()
  }

  public var body: some View {
    let name = item?.name ?? ""
    let multiple = item?.multiple ?? false
    let checked = questionnaire?.isSelected(value, in: name) ?? false
    let invalid = item?.invalid ?? false
    let enabled = isEnabled && !disabled && !(item?.disabled ?? false)
    Button {
      questionnaire?.toggle(value, in: name)
      taps += 1
    } label: {
      HStack(alignment: .firstTextBaseline, spacing: 10) {
        indicator(checked: checked, multiple: multiple, enabled: enabled)
          .alignmentGuide(.firstTextBaseline) { $0[VerticalAlignment.center] + 5 }
        VStack(alignment: .leading, spacing: 4) {
          label
        }
        .scaledFont(.base)
        .foregroundStyle(EsuissColor.foreground)
        .frame(maxWidth: .infinity, alignment: .leading)
        .fixedSize(horizontal: false, vertical: true)
      }
      .padding(.horizontal, 16)
      .padding(.vertical, 12)
      .frame(minHeight: 44)
      .contentShape(RoundedRectangle(cornerRadius: Radius.xl, style: .continuous))
    }
    .buttonStyle(QuestionnaireChoiceStyle(checked: checked, invalid: invalid, dark: colorScheme == .dark))
    .disabled(!enabled)
    .hapticFeedback(.selection, trigger: taps)
    .accessibilityAddTraits(checked ? .isSelected : [])
  }

  @ViewBuilder
  private func indicator(checked: Bool, multiple: Bool, enabled: Bool) -> some View {
    let shape = RoundedRectangle(cornerRadius: multiple ? Radius.xs : 8, style: .continuous)
    ZStack {
      shape.fill(checked ? EsuissColor.primary : EsuissColor.border)
      if checked {
        if multiple {
          Ph.check.bold
            .frame(width: 12, height: 12)
            .foregroundStyle(EsuissColor.primaryForeground)
        } else {
          Circle()
            .fill(EsuissColor.primaryForeground)
            .frame(width: colorScheme == .dark ? 10 : 8, height: colorScheme == .dark ? 10 : 8)
        }
      }
    }
    .frame(width: 16, height: 16)
    .accessibilityHidden(true)
  }
}

extension QuestionnaireChoice where Label == Text {
  public init(_ title: LocalizedStringKey, value: String, disabled: Bool = false) {
    self.init(value: value, disabled: disabled) { Text(title) }
  }

  public init(verbatim title: String, value: String, disabled: Bool = false) {
    self.init(value: value, disabled: disabled) { Text(verbatim: title) }
  }
}

private struct QuestionnaireChoiceStyle: ButtonStyle {
  let checked: Bool
  let invalid: Bool
  let dark: Bool

  @Environment(\.isEnabled) private var isEnabled

  func makeBody(configuration: Configuration) -> some View {
    let shape = RoundedRectangle(cornerRadius: Radius.xl, style: .continuous)
    configuration.label
      .background {
        shape.fill(invalid ? EsuissColor.destructive.opacity(dark ? 0.1 : 0.05) : .clear)
      }
      .overlay {
        shape.strokeBorder(border, lineWidth: checked && !invalid ? 2 : 1)
      }
      .opacity(isEnabled ? (configuration.isPressed ? 0.8 : 1) : 0.5)
      .animation(.easeOut(duration: 0.15), value: checked)
  }

  private var border: Color {
    if invalid { return EsuissColor.destructive }
    return checked ? EsuissColor.primary : EsuissColor.border
  }
}

public struct QuestionnaireChoiceDescription: View {
  let text: Text

  public init(_ description: LocalizedStringKey) {
    text = Text(description)
  }

  public init(verbatim description: String) {
    text = Text(verbatim: description)
  }

  public var body: some View {
    text
      .foregroundStyle(EsuissColor.mutedForeground)
      .fixedSize(horizontal: false, vertical: true)
  }
}

public struct QuestionnaireInput: View {
  let placeholder: Text
  let keyboard: UIKeyboardType
  let contentType: UITextContentType?
  let disabled: Bool

  @Environment(\.questionnaire) private var questionnaire
  @Environment(\.questionnaireItem) private var item
  @Environment(\.isEnabled) private var isEnabled
  @Environment(\.colorScheme) private var colorScheme

  public init(
    _ placeholder: LocalizedStringResource = "",
    keyboard: UIKeyboardType = .default,
    contentType: UITextContentType? = nil,
    disabled: Bool = false
  ) {
    self.placeholder = Text(verbatim: String(localized: placeholder))
    self.keyboard = keyboard
    self.contentType = contentType
    self.disabled = disabled
  }

  public var body: some View {
    let name = item?.name ?? ""
    let invalid = item?.invalid ?? false
    let enabled = isEnabled && !disabled && !(item?.disabled ?? false)
    let controller = questionnaire
    let shape = RoundedRectangle(cornerRadius: Radius.lg, style: .continuous)
    TextField(
      text: Binding(
        get: { controller?.text(for: name) ?? "" },
        set: { controller?.setText($0, for: name) }
      ),
      prompt: placeholder.foregroundStyle(EsuissColor.mutedForeground)
    ) {
      placeholder
    }
    .keyboardType(keyboard)
    .textContentType(contentType)
    .textInputAutocapitalization(keyboard == .emailAddress || keyboard == .URL ? .never : nil)
    .autocorrectionDisabled(keyboard == .emailAddress || keyboard == .URL)
    .submitLabel(controller?.isLast == true ? .done : .next)
    .onSubmit { controller?.advance() }
    .scaledFont(.base)
    .foregroundStyle(EsuissColor.foreground)
    .tint(EsuissColor.primary)
    .padding(.horizontal, 12)
    .frame(height: 44)
    .background(invalid ? EsuissColor.destructive.opacity(colorScheme == .dark ? 0.1 : 0.05) : EsuissColor.secondary, in: shape)
    .overlay { shape.strokeBorder(invalid ? EsuissColor.destructive : .clear, lineWidth: 1) }
    .opacity(enabled ? 1 : 0.5)
    .disabled(!enabled)
  }
}

public struct QuestionnaireError: View {
  let text: Text?

  @Environment(\.questionnaire) private var questionnaire
  @Environment(\.questionnaireItem) private var item

  public init() {
    text = nil
  }

  public init(_ message: LocalizedStringKey) {
    text = Text(message)
  }

  public init(verbatim message: String) {
    text = Text(verbatim: message)
  }

  public var body: some View {
    let name = item?.name ?? ""
    let invalid = item?.invalid ?? false
    let required = questionnaire?.definition(name)?.required ?? false
    if invalid {
      (text ?? (required ? Text("Choose an answer to continue.") : Text("Choose an answer or skip this question.")))
        .scaledTextStyle(.sm)
        .foregroundStyle(EsuissColor.destructive)
        .fixedSize(horizontal: false, vertical: true)
        .transition(.opacity)
        .onAppear {
          AccessibilityNotification.Announcement(
            String(localized: required ? "Choose an answer to continue." : "Choose an answer or skip this question.")
          ).post()
        }
    }
  }
}

public struct QuestionnaireActions<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    QuestionnaireActionsLayout(spacing: 8) {
      content
    }
    .frame(maxWidth: .infinity, minHeight: 44)
  }
}

struct QuestionnaireActionPlacementKey: LayoutValueKey {
  static let defaultValue = QuestionnaireActionPlacement.end
}

enum QuestionnaireActionPlacement {
  case start, end
}

struct QuestionnaireActionsLayout: Layout {
  let spacing: CGFloat

  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    let sizes = subviews.map { $0.sizeThatFits(.unspecified) }.filter { $0.width > 0 }
    let height = sizes.map(\.height).max() ?? 0
    let width = sizes.reduce(0) { $0 + $1.width } + spacing * CGFloat(max(sizes.count - 1, 0))
    return CGSize(width: proposal.width ?? width, height: height)
  }

  func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
    var leading = bounds.minX
    var trailing = bounds.maxX
    for subview in subviews where subview[QuestionnaireActionPlacementKey.self] == .start {
      let size = subview.sizeThatFits(.unspecified)
      guard size.width > 0 else { continue }
      subview.place(at: CGPoint(x: leading, y: bounds.midY), anchor: .leading, proposal: ProposedViewSize(size))
      leading += size.width + spacing
    }
    for subview in subviews.reversed() where subview[QuestionnaireActionPlacementKey.self] == .end {
      let size = subview.sizeThatFits(.unspecified)
      guard size.width > 0 else { continue }
      subview.place(at: CGPoint(x: trailing, y: bounds.midY), anchor: .trailing, proposal: ProposedViewSize(size))
      trailing -= size.width + spacing
    }
  }
}

private struct QuestionnaireNavigationButton: View {
  let title: Text
  let variant: VariantButtonStyle.Variant
  let size: VariantButtonStyle.Size
  let visible: Bool
  let action: () -> Void

  var body: some View {
    if visible {
      Button(action: action) { title }
        .buttonStyle(.variant(variant, size: size))
        .transition(.opacity)
    }
  }
}

public struct QuestionnairePrevious: View {
  let title: Text
  let variant: VariantButtonStyle.Variant
  let size: VariantButtonStyle.Size

  @Environment(\.questionnaire) private var questionnaire

  public init(_ title: LocalizedStringKey = "Previous", variant: VariantButtonStyle.Variant = .outline, size: VariantButtonStyle.Size = .default) {
    self.title = Text(title)
    self.variant = variant
    self.size = size
  }

  public var body: some View {
    let visible = (questionnaire?.total ?? 0) > 1 && questionnaire?.isFirst == false
    QuestionnaireNavigationButton(title: title, variant: variant, size: size, visible: visible) {
      questionnaire?.goPrevious()
    }
    .layoutValue(key: QuestionnaireActionPlacementKey.self, value: .start)
  }
}

public struct QuestionnaireSkip: View {
  let title: Text
  let variant: VariantButtonStyle.Variant
  let size: VariantButtonStyle.Size

  @Environment(\.questionnaire) private var questionnaire

  public init(_ title: LocalizedStringKey = "Skip", variant: VariantButtonStyle.Variant = .outline, size: VariantButtonStyle.Size = .default) {
    self.title = Text(title)
    self.variant = variant
    self.size = size
  }

  public var body: some View {
    QuestionnaireNavigationButton(title: title, variant: variant, size: size, visible: questionnaire?.activeItemRequired == false) {
      questionnaire?.skip()
    }
  }
}

public struct QuestionnaireNext: View {
  let title: Text
  let variant: VariantButtonStyle.Variant
  let size: VariantButtonStyle.Size

  @Environment(\.questionnaire) private var questionnaire

  public init(_ title: LocalizedStringKey = "Next", variant: VariantButtonStyle.Variant = .default, size: VariantButtonStyle.Size = .default) {
    self.title = Text(title)
    self.variant = variant
    self.size = size
  }

  public var body: some View {
    let visible = (questionnaire?.total ?? 0) > 1 && questionnaire?.isLast == false
    QuestionnaireNavigationButton(title: title, variant: variant, size: size, visible: visible) {
      questionnaire?.goNext()
    }
  }
}

public struct QuestionnaireSubmit: View {
  let title: Text
  let variant: VariantButtonStyle.Variant
  let size: VariantButtonStyle.Size

  @Environment(\.questionnaire) private var questionnaire

  public init(_ title: LocalizedStringKey = "Submit", variant: VariantButtonStyle.Variant = .default, size: VariantButtonStyle.Size = .default) {
    self.title = Text(title)
    self.variant = variant
    self.size = size
  }

  public var body: some View {
    let visible = (questionnaire?.total ?? 0) > 0 && questionnaire?.isLast == true
    QuestionnaireNavigationButton(title: title, variant: variant, size: size, visible: visible) {
      questionnaire?.submit()
    }
  }
}
```

- `swift/Components/Button.swift`: see [Button](https://ui.suiss.app/docs/components/button.md)

- `swift/Components/ButtonGroup.swift`: see [Button Group](https://ui.suiss.app/docs/components/button-group.md)

- `swift/Components/Field.swift`: see [Field](https://ui.suiss.app/docs/components/field.md)

- `swift/Components/Haptics.swift`: see [Haptics](https://ui.suiss.app/docs/components/haptics.md)

- `swift/Components/Separator.swift`: see [Separator](https://ui.suiss.app/docs/components/separator.md)

- `swift/Components/TextVariant.swift`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/swiftui/Sources/EsuissUI/Components/TextVariant.swift)

5. Add the files to your app target.

**Jetpack Compose**

1. Set `minSdk` to 24 or higher and add the dependencies:

```kotlin title="build.gradle.kts"
implementation(platform("androidx.compose:compose-bom:2026.09.00"))
implementation("androidx.compose.foundation:foundation")
implementation("androidx.compose.ui:ui")
implementation("com.adamglin:phosphor-icon-android:1.0.0")
```

2. Copy the theme files every view uses:

- `kotlin/theme/Theme.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/theme/Theme.kt)

- `kotlin/theme/Tokens.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/theme/Tokens.kt)

3. Copy the source and every file it uses:

```kt title="kotlin/components/Questionnaire.kt"
package com.esuiss.ui.components

import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.EnterTransition
import androidx.compose.animation.ExitTransition
import androidx.compose.animation.core.tween
import androidx.compose.animation.fadeIn
import androidx.compose.animation.fadeOut
import androidx.compose.animation.slideInHorizontally
import androidx.compose.animation.slideOutHorizontally
import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.heightIn
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.selection.selectable
import androidx.compose.foundation.selection.selectableGroup
import androidx.compose.foundation.selection.toggleable
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.SideEffect
import androidx.compose.runtime.Stable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateListOf
import androidx.compose.runtime.mutableStateMapOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberUpdatedState
import androidx.compose.runtime.setValue
import androidx.compose.runtime.snapshotFlow
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.alpha
import androidx.compose.ui.draw.clip
import androidx.compose.ui.draw.clipToBounds
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.hapticfeedback.HapticFeedbackType
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.layout.layout
import androidx.compose.ui.layout.layoutId
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.ProgressBarRangeInfo
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.semantics.error
import androidx.compose.ui.semantics.heading
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.semantics.progressBarRangeInfo
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.semantics.stateDescription
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.Constraints
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.constrainHeight
import androidx.compose.ui.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Bold
import com.adamglin.phosphoricons.bold.Check
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography

enum class QuestionnaireItemStatus { Unanswered, Answered, Skipped }

@Immutable
class QuestionnaireItemDefinition(
    val name: String,
    val required: Boolean = false,
    val disabled: Boolean = false,
)

@Stable
internal class QuestionnaireItemRecord(val name: String) {
    var required by mutableStateOf(false)
    var disabled by mutableStateOf(false)
    var multiple by mutableStateOf(false)
    var invalidProp by mutableStateOf(false)
    var skipped by mutableStateOf(false)
    var attempted by mutableStateOf(false)
    var input by mutableStateOf("")
    var defaultInput = ""
    val selected = mutableStateListOf<String>()
    val defaults = mutableListOf<String>()
    val initialized = mutableSetOf<String>()
    var onStatusChange: ((QuestionnaireItemStatus) -> Unit)? = null
    private var reported = QuestionnaireItemStatus.Unanswered

    val answered: Boolean
        get() = selected.isNotEmpty() || input.isNotBlank()

    val status: QuestionnaireItemStatus
        get() = when {
            skipped -> QuestionnaireItemStatus.Skipped
            answered -> QuestionnaireItemStatus.Answered
            else -> QuestionnaireItemStatus.Unanswered
        }

    val satisfied: Boolean
        get() = disabled || (skipped && !required) || (!invalidProp && status == QuestionnaireItemStatus.Answered)

    val invalid: Boolean
        get() = !disabled && !(skipped && !required) && (invalidProp || (attempted && !satisfied))

    fun select(value: String, on: Boolean) {
        skipped = false
        when {
            !on -> selected.remove(value)
            multiple -> if (value !in selected) selected.add(value)
            else -> if (selected.size != 1 || selected[0] != value) {
                selected.clear()
                selected.add(value)
            }
        }
    }

    fun updateInput(text: String) {
        if (text.isNotBlank()) skipped = false
        input = text
    }

    fun skip() {
        if (required) return
        selected.clear()
        input = ""
        skipped = true
    }

    fun reset() {
        attempted = false
        skipped = false
        selected.clear()
        selected.addAll(if (multiple) defaults else defaults.take(1))
        input = defaultInput
    }

    fun report() {
        val current = status
        if (current == reported) return
        reported = current
        onStatusChange?.invoke(current)
    }
}

@Stable
class QuestionnaireState internal constructor(
    defaultItem: String?,
    private val definitions: List<QuestionnaireItemDefinition>?,
) {
    private val records = mutableStateMapOf<String, QuestionnaireItemRecord>()
    private val order = mutableStateListOf<String>()
    private var requested by mutableStateOf(defaultItem)
    internal var forward by mutableStateOf(true)
    internal var animated by mutableStateOf(false)
    internal var onItemChange: ((String) -> Unit)? = null
    internal var onSubmit: ((Map<String, List<String>>) -> Unit)? = null
    internal var onInvalid: (() -> Unit)? = null

    private val sequence: List<String>
        get() = definitions?.filter { !it.disabled }?.map { it.name }
            ?: order.filter { records[it]?.disabled != true }

    val item: String?
        get() {
            val names = sequence
            return requested?.takeIf { it in names } ?: names.firstOrNull()
        }

    private val index: Int
        get() = item?.let { sequence.indexOf(it) } ?: -1

    val total: Int
        get() = sequence.size

    val current: Int
        get() = index + 1

    val first: Boolean
        get() = total > 0 && index == 0

    val last: Boolean
        get() = total > 0 && index == total - 1

    val activeItemRequired: Boolean?
        get() {
            val name = item ?: return null
            return definitions?.firstOrNull { it.name == name }?.required ?: records[name]?.required ?: false
        }

    val activeItemStatus: QuestionnaireItemStatus?
        get() {
            val name = item ?: return null
            return records[name]?.status ?: QuestionnaireItemStatus.Unanswered
        }

    val values: Map<String, List<String>>
        get() = sequence.mapNotNull { name ->
            val record = records[name] ?: return@mapNotNull null
            if (record.skipped || !record.answered) return@mapNotNull null
            name to (record.selected.toList() + listOfNotNull(record.input.takeIf { it.isNotBlank() }))
        }.toMap()

    fun status(name: String): QuestionnaireItemStatus = records[name]?.status ?: QuestionnaireItemStatus.Unanswered

    internal fun record(name: String): QuestionnaireItemRecord = records.getOrPut(name) { QuestionnaireItemRecord(name) }

    internal fun register(name: String): () -> Unit {
        record(name)
        if (name !in order) order.add(name)
        return { order.remove(name) }
    }

    internal fun isActive(name: String) = item == name

    fun goTo(name: String) {
        val names = sequence
        val target = names.indexOf(name)
        if (target < 0 || name == item) return
        forward = target > index
        animated = true
        requested = name
        onItemChange?.invoke(name)
    }

    fun goPrevious() {
        val previous = sequence.getOrNull(index - 1) ?: return
        goTo(previous)
    }

    fun goNext() {
        val name = item ?: return
        val next = sequence.getOrNull(index + 1) ?: return
        if (!validate(name)) {
            onInvalid?.invoke()
            return
        }
        goTo(next)
    }

    fun skipCurrent() {
        val name = item ?: return
        if (activeItemRequired != false) return
        records[name]?.skip()
        val next = sequence.getOrNull(index + 1)
        if (next != null) goTo(next) else submit()
    }

    fun submit() {
        val invalid = sequence.firstOrNull { !validate(it) }
        if (invalid != null) {
            goTo(invalid)
            onInvalid?.invoke()
            return
        }
        onSubmit?.invoke(values)
    }

    fun reset() {
        records.values.forEach { it.reset() }
        val start = sequence.firstOrNull() ?: return
        if (start != item) goTo(start)
    }

    private fun validate(name: String): Boolean {
        val record = records[name] ?: return definitions?.firstOrNull { it.name == name }?.required != true
        record.attempted = true
        return record.satisfied
    }
}

@Composable
fun rememberQuestionnaireState(
    defaultItem: String? = null,
    items: List<QuestionnaireItemDefinition>? = null,
): QuestionnaireState = remember(items) { QuestionnaireState(defaultItem, items) }

private val LocalQuestionnaire = staticCompositionLocalOf<QuestionnaireState?> { null }

private val LocalQuestionnaireItem = staticCompositionLocalOf<QuestionnaireItemRecord?> { null }

@Composable
fun useQuestionnaire(): QuestionnaireState =
    checkNotNull(LocalQuestionnaire.current) { "Questionnaire parts must be used within a Questionnaire" }

@Composable
private fun questionnaireItem(): QuestionnaireItemRecord =
    checkNotNull(LocalQuestionnaireItem.current) { "Questionnaire item parts must be used within a QuestionnaireItem" }

private object QuestionnaireItemSlot

private object QuestionnairePreviousSlot

private fun Modifier.pullUp(amount: Dp): Modifier = layout { measurable, constraints ->
    val placeable = measurable.measure(constraints)
    val pull = amount.roundToPx()
    layout(placeable.width, (placeable.height - pull).coerceAtLeast(0)) { placeable.place(0, -pull) }
}

@Composable
fun Questionnaire(
    modifier: Modifier = Modifier,
    state: QuestionnaireState = rememberQuestionnaireState(),
    onItemChange: ((String) -> Unit)? = null,
    onSubmit: (Map<String, List<String>>) -> Unit = {},
    content: @Composable () -> Unit,
) {
    val haptics = rememberHaptics()
    val itemChange by rememberUpdatedState(onItemChange)
    val submit by rememberUpdatedState(onSubmit)
    SideEffect {
        state.onItemChange = { itemChange?.invoke(it) }
        state.onSubmit = { submit(it) }
        state.onInvalid = { haptics.perform(HapticFeedbackType.Reject) }
    }
    CompositionLocalProvider(LocalQuestionnaire provides state) {
        Layout(content = content, modifier = modifier.fillMaxWidth()) { measurables, constraints ->
            val loose = constraints.copy(minWidth = 0, minHeight = 0)
            val placeables = measurables.map { it.measure(loose) }
            val slots = measurables.map { it.layoutId == QuestionnaireItemSlot }
            val gap = 24.dp.roundToPx()
            val positions = IntArray(placeables.size)
            var y = 0
            var started = false
            var index = 0
            while (index < placeables.size) {
                var end = index + 1
                if (slots[index]) while (end < placeables.size && slots[end]) end++
                val height = (index until end).maxOf { placeables[it].height }
                if (height > 0 && started) y += gap
                for (cell in index until end) positions[cell] = y
                if (height > 0) {
                    y += height
                    started = true
                }
                index = end
            }
            val width = constraints.maxWidth.takeIf { it != Constraints.Infinity }
                ?: placeables.maxOfOrNull { it.width } ?: 0
            layout(width, constraints.constrainHeight(y)) {
                placeables.forEachIndexed { i, placeable -> placeable.place(0, positions[i]) }
            }
        }
    }
}

@Composable
fun QuestionnaireProgress(
    modifier: Modifier = Modifier,
    content: (@Composable (current: Int, total: Int) -> Unit)? = null,
) {
    val state = useQuestionnaire()
    val total = state.total
    val current = state.current
    val text = if (total > 0) "Question $current of $total" else ""
    Box(
        modifier = modifier
            .heightIn(min = 18.dp)
            .semantics(mergeDescendants = true) {
                contentDescription = "Questionnaire progress"
                liveRegion = LiveRegionMode.Polite
                if (total > 0) {
                    progressBarRangeInfo = ProgressBarRangeInfo(current.toFloat(), 1f..total.toFloat())
                    stateDescription = text
                }
            },
    ) {
        if (content != null) {
            CompositionLocalProvider(
                LocalContentStyle provides Typography.xs.copy(color = EsuissTheme.colors.mutedForeground),
                LocalContentColor provides EsuissTheme.colors.mutedForeground,
            ) {
                content(current, total)
            }
        } else {
            BasicText(text, style = Typography.xs.copy(color = EsuissTheme.colors.mutedForeground))
        }
    }
}

@Composable
fun QuestionnaireItem(
    name: String,
    modifier: Modifier = Modifier,
    required: Boolean = false,
    multiple: Boolean = false,
    enabled: Boolean = true,
    invalid: Boolean = false,
    onStatusChange: ((QuestionnaireItemStatus) -> Unit)? = null,
    content: @Composable ColumnScope.() -> Unit,
) {
    val state = useQuestionnaire()
    val record = remember(state, name) { state.record(name) }
    DisposableEffect(state, name) { onDispose(state.register(name)) }
    val wasMultiple = remember(record) { mutableStateOf(multiple) }
    SideEffect {
        record.required = required
        record.disabled = !enabled
        record.invalidProp = invalid
        record.onStatusChange = onStatusChange
        if (wasMultiple.value && !multiple && record.selected.size > 1) {
            val keep = record.selected.first()
            record.selected.clear()
            record.selected.add(keep)
        }
        wasMultiple.value = multiple
        record.multiple = multiple
    }
    LaunchedEffect(record) {
        snapshotFlow { record.status }.collect { record.report() }
    }
    val active = enabled && state.isActive(name)
    val reduced = formReducedMotion()
    val animate = state.animated && !reduced
    val enter = if (animate) {
        slideInHorizontally(tween(320, easing = FormEasing)) { if (state.forward) it else -it } +
            fadeIn(tween(320, easing = FormEasing))
    } else {
        EnterTransition.None
    }
    val exit = if (animate) {
        slideOutHorizontally(tween(320, easing = FormEasing)) { if (state.forward) -it else it } +
            fadeOut(tween(200, easing = FormEasing))
    } else {
        ExitTransition.None
    }
    Box(modifier = Modifier.layoutId(QuestionnaireItemSlot).fillMaxWidth().clipToBounds()) {
        AnimatedVisibility(visible = active, enter = enter, exit = exit) {
            CompositionLocalProvider(LocalQuestionnaireItem provides record) {
                Column(
                    modifier = modifier
                        .fillMaxWidth()
                        .semantics {
                            if (record.invalid) error(if (required) "Choose an answer to continue." else "Choose an answer or skip this question.")
                        },
                    verticalArrangement = Arrangement.spacedBy(20.dp),
                    content = content,
                )
            }
        }
    }
}

@Composable
fun QuestionnaireTitle(text: String, modifier: Modifier = Modifier) {
    questionnaireItem()
    BasicText(
        text,
        modifier = modifier.semantics { heading() },
        style = Typography.base.copy(color = EsuissTheme.colors.foreground, fontWeight = FontWeight.SemiBold),
    )
}

@Composable
fun QuestionnaireDescription(text: String, modifier: Modifier = Modifier) {
    BasicText(
        text,
        modifier = modifier.pullUp(16.dp),
        style = Typography.sm.copy(color = EsuissTheme.colors.mutedForeground),
    )
}

@Composable
fun QuestionnaireChoices(modifier: Modifier = Modifier, content: @Composable ColumnScope.() -> Unit) {
    val item = questionnaireItem()
    Column(
        modifier = modifier
            .fillMaxWidth()
            .then(if (item.multiple) Modifier else Modifier.selectableGroup()),
        verticalArrangement = Arrangement.spacedBy(12.dp),
        content = content,
    )
}

@Composable
fun QuestionnaireChoice(
    value: String,
    modifier: Modifier = Modifier,
    checked: Boolean? = null,
    onCheckedChange: ((Boolean) -> Unit)? = null,
    defaultChecked: Boolean = false,
    enabled: Boolean = true,
    content: @Composable ColumnScope.() -> Unit,
) {
    val item = questionnaireItem()
    val colors = EsuissTheme.colors
    val haptics = rememberHaptics()
    val source = remember { MutableInteractionSource() }
    val pressed by source.collectIsPressedAsState()
    SideEffect {
        if (value !in item.initialized) {
            item.initialized.add(value)
            if (defaultChecked) {
                item.defaults.add(value)
                if (checked == null && (item.multiple || item.selected.isEmpty())) item.selected.add(value)
            }
        }
    }
    LaunchedEffect(item, value, checked) {
        if (checked == null) return@LaunchedEffect
        if (checked) item.select(value, true) else item.selected.remove(value)
    }
    val active = enabled && !item.disabled
    val on = if (checked != null) checked && !item.skipped else value in item.selected
    val invalid = item.invalid
    val multiple = item.multiple
    val change: (Boolean) -> Unit = { next ->
        haptics.selection()
        if (checked == null) item.select(value, next) else item.skipped = false
        onCheckedChange?.invoke(next)
    }
    val shape = RoundedCornerShape(Radius.xl)
    val background = when {
        invalid -> colors.destructive.copy(alpha = if (colors.isDark) 0.1f else 0.05f)
        else -> Color.Transparent
    }
    val border = when {
        on -> colors.primary
        invalid -> colors.destructive
        else -> colors.border
    }
    val interaction = if (multiple) {
        Modifier.toggleable(on, source, null, active, Role.Checkbox) { change(it) }
    } else {
        Modifier.selectable(on, source, null, active, Role.RadioButton) { change(true) }
    }
    Row(
        modifier = modifier
            .fillMaxWidth()
            .heightIn(min = 44.dp)
            .alpha(
                when {
                    !active -> 0.5f
                    pressed -> 0.8f
                    else -> 1f
                },
            )
            .clip(shape)
            .background(background, shape)
            .border(if (on) 2.dp else 1.dp, border, shape)
            .then(interaction)
            .padding(horizontal = 16.dp, vertical = 12.dp),
        horizontalArrangement = Arrangement.spacedBy(10.dp),
        verticalAlignment = Alignment.Top,
    ) {
        Box(
            modifier = Modifier
                .padding(top = 3.dp)
                .size(16.dp)
                .background(if (on) colors.primary else colors.border, if (multiple) RoundedCornerShape(Radius.xs) else CircleShape),
            contentAlignment = Alignment.Center,
        ) {
            if (on && multiple) {
                Icon(PhosphorIcons.Bold.Check, contentDescription = null, size = 12.dp, tint = colors.primaryForeground)
            } else if (on) {
                Box(Modifier.size(if (colors.isDark) 10.dp else 8.dp).background(colors.primaryForeground, CircleShape))
            }
        }
        val foreground = colors.foreground
        CompositionLocalProvider(
            LocalContentStyle provides Typography.base.copy(color = foreground),
            LocalContentColor provides foreground,
        ) {
            Column(modifier = Modifier.weight(1f), verticalArrangement = Arrangement.spacedBy(4.dp), content = content)
        }
    }
}

@Composable
fun QuestionnaireChoice(
    text: String,
    value: String,
    modifier: Modifier = Modifier,
    checked: Boolean? = null,
    onCheckedChange: ((Boolean) -> Unit)? = null,
    defaultChecked: Boolean = false,
    enabled: Boolean = true,
) {
    QuestionnaireChoice(value, modifier, checked, onCheckedChange, defaultChecked, enabled) {
        BasicText(text, style = LocalContentStyle.current)
    }
}

@Composable
fun QuestionnaireChoiceDescription(text: String, modifier: Modifier = Modifier) {
    val colors = EsuissTheme.colors
    BasicText(
        text,
        modifier = modifier,
        style = LocalContentStyle.current.copy(
            color = colors.mutedForeground,
        ),
    )
}

@Composable
fun QuestionnaireInput(
    modifier: Modifier = Modifier,
    value: String? = null,
    onValueChange: ((String) -> Unit)? = null,
    defaultValue: String = "",
    enabled: Boolean = true,
    placeholder: String? = null,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
) {
    val item = questionnaireItem()
    val state = useQuestionnaire()
    SideEffect {
        if (InputMarker !in item.initialized) {
            item.initialized.add(InputMarker)
            item.defaultInput = defaultValue
            if (value == null) item.input = defaultValue
        }
    }
    LaunchedEffect(item, value) {
        if (value != null) item.updateInput(value)
    }
    Input(
        value = value ?: item.input,
        onValueChange = { next ->
            if (value == null) item.updateInput(next)
            onValueChange?.invoke(next)
        },
        modifier = modifier,
        enabled = enabled && !item.disabled,
        invalid = item.invalid,
        placeholder = placeholder,
        keyboardOptions = keyboardOptions,
        keyboardActions = KeyboardActions(onDone = {
            if (state.last) state.submit() else state.goNext()
        }),
    )
}

private const val InputMarker = "\u0000input"

@Composable
fun QuestionnaireError(text: String? = null, modifier: Modifier = Modifier) {
    val item = questionnaireItem()
    if (!item.invalid) return
    BasicText(
        text ?: if (item.required) "Choose an answer to continue." else "Choose an answer or skip this question.",
        modifier = modifier
            .pullUp(12.dp)
            .semantics { liveRegion = LiveRegionMode.Assertive },
        style = Typography.sm.copy(color = EsuissTheme.colors.destructive),
    )
}

@Composable
fun QuestionnaireActions(modifier: Modifier = Modifier, content: @Composable () -> Unit) {
    Layout(content = content, modifier = modifier.fillMaxWidth().heightIn(min = 44.dp)) { measurables, constraints ->
        val loose = constraints.copy(minWidth = 0, minHeight = 0)
        val placeables = measurables.map { it.measure(loose) }
        val previous = measurables.map { it.layoutId == QuestionnairePreviousSlot }
        val gap = 8.dp.roundToPx()
        val width = constraints.maxWidth
        val height = constraints.constrainHeight(placeables.maxOfOrNull { it.height } ?: 0)
        layout(width, height) {
            var start = 0
            placeables.forEachIndexed { i, placeable ->
                if (!previous[i] || placeable.width == 0) return@forEachIndexed
                placeable.place(start, (height - placeable.height) / 2)
                start += placeable.width + gap
            }
            var end = width
            placeables.indices.reversed().forEach { i ->
                val placeable = placeables[i]
                if (previous[i] || placeable.width == 0) return@forEach
                end -= placeable.width
                placeable.place(end, (height - placeable.height) / 2)
                end -= gap
            }
        }
    }
}

@Composable
private fun QuestionnaireNavigation(
    text: String,
    visible: Boolean,
    onClick: () -> Unit,
    modifier: Modifier,
    variant: ButtonVariant,
    size: ButtonSize,
    enabled: Boolean,
) {
    if (!visible) return
    Button(
        text = text,
        onClick = onClick,
        modifier = modifier.heightIn(min = 44.dp),
        variant = variant,
        size = size,
        enabled = enabled,
    )
}

@Composable
fun QuestionnairePrevious(
    modifier: Modifier = Modifier,
    text: String = "Previous",
    variant: ButtonVariant = ButtonVariant.Outline,
    size: ButtonSize = ButtonSize.Default,
    enabled: Boolean = true,
) {
    val state = useQuestionnaire()
    QuestionnaireNavigation(
        text,
        state.total > 1 && !state.first,
        state::goPrevious,
        modifier.layoutId(QuestionnairePreviousSlot),
        variant,
        size,
        enabled,
    )
}

@Composable
fun QuestionnaireSkip(
    modifier: Modifier = Modifier,
    text: String = "Skip",
    variant: ButtonVariant = ButtonVariant.Outline,
    size: ButtonSize = ButtonSize.Default,
    enabled: Boolean = true,
) {
    val state = useQuestionnaire()
    QuestionnaireNavigation(text, state.activeItemRequired == false, state::skipCurrent, modifier, variant, size, enabled)
}

@Composable
fun QuestionnaireNext(
    modifier: Modifier = Modifier,
    text: String = "Next",
    variant: ButtonVariant = ButtonVariant.Default,
    size: ButtonSize = ButtonSize.Default,
    enabled: Boolean = true,
) {
    val state = useQuestionnaire()
    QuestionnaireNavigation(text, state.total > 1 && !state.last, state::goNext, modifier, variant, size, enabled)
}

@Composable
fun QuestionnaireSubmit(
    modifier: Modifier = Modifier,
    text: String = "Submit",
    variant: ButtonVariant = ButtonVariant.Default,
    size: ButtonSize = ButtonSize.Default,
    enabled: Boolean = true,
) {
    val state = useQuestionnaire()
    QuestionnaireNavigation(text, state.total > 0 && state.last, state::submit, modifier, variant, size, enabled)
}
```

- `kotlin/components/Button.kt`: see [Button](https://ui.suiss.app/docs/components/button.md)

- `kotlin/components/ButtonGroup.kt`: see [Button Group](https://ui.suiss.app/docs/components/button-group.md)

- `kotlin/components/Checkbox.kt`: see [Checkbox](https://ui.suiss.app/docs/components/checkbox.md)

- `kotlin/components/Content.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/components/Content.kt)

- `kotlin/components/Field.kt`: see [Field](https://ui.suiss.app/docs/components/field.md)

- `kotlin/components/FormSupport.kt`: [source](https://github.com/e-suiss/ui/blob/main/packages/mobile/kotlin/ui/src/main/kotlin/com/esuiss/ui/components/FormSupport.kt)

- `kotlin/components/Haptics.kt`: see [Haptics](https://ui.suiss.app/docs/components/haptics.md)

- `kotlin/components/Icon.kt`: see [Icon](https://ui.suiss.app/docs/components/icon.md)

- `kotlin/components/Input.kt`: see [Input](https://ui.suiss.app/docs/components/input.md)

- `kotlin/components/Label.kt`: see [Label](https://ui.suiss.app/docs/components/label.md)

- `kotlin/components/Separator.kt`: see [Separator](https://ui.suiss.app/docs/components/separator.md)

4. Update the `com.esuiss.ui` package names to match your project.

## Usage

```tsx
import { Questionnaire, QuestionnaireProgress, QuestionnaireItem, QuestionnaireTitle, QuestionnaireDescription, QuestionnaireChoices, QuestionnaireChoice, QuestionnaireChoiceDescription, QuestionnaireInput, QuestionnaireError, QuestionnaireActions, QuestionnairePrevious, QuestionnaireSkip, QuestionnaireNext, QuestionnaireSubmit } from "@/components/ui/questionnaire"
```

```tsx
<Onboarding />
```

Give every `QuestionnaireItem` a unique `name`; answers are collected under that name. Mark items `required` to block moving on without an answer; optional items show the Skip button. `QuestionnaireError` appears only when the item is invalid and has a default message you can replace.

The active item is uncontrolled through `defaultItem` or controlled with `item` and `onItemChange`. `onSubmit` receives the collected values: a string for single-answer items and a string array for `multiple` items.

`QuestionnaireChoice` supports `defaultChecked`, or controlled `checked` with `onCheckedChange`. `QuestionnaireInput` takes a `type` that sets the keyboard, autocomplete and secure entry. `QuestionnaireProgress` shows "Question 1 of 3" by default and accepts a render function. Use `useQuestionnaireContext` to build custom controls, or `useQuestionnaire` for the underlying state.

## Examples

### Mid flow

Starts on the second question with `defaultItem`.

![Preview](https://ui.suiss.app/previews/components-questionnaire--mid-flow.light.webp)

```tsx
import * as React from "react"
import { View } from "react-native"
import { Questionnaire, QuestionnaireActions, QuestionnaireChoice, QuestionnaireChoices, QuestionnaireDescription, QuestionnaireError, QuestionnaireInput, QuestionnaireItem, QuestionnaireNext, QuestionnairePrevious, QuestionnaireProgress, QuestionnaireSkip, QuestionnaireSubmit, QuestionnaireTitle, type QuestionnaireValues } from "@/components/ui/questionnaire"
import { Text } from "@/components/ui/text"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

function Result({ values }: { values: QuestionnaireValues | null }) {
  if (!values) return null
  return (
    <Text role="status" className="text-sm text-muted-foreground">
      {`Submitted: ${JSON.stringify(values)}`}
    </Text>
  )
}

function Onboarding({
  defaultItem,
  attempted = false,
}: {
  defaultItem?: string
  attempted?: boolean
}) {
  const [values, setValues] = React.useState<QuestionnaireValues | null>(null)
  return (
    <View className="w-full gap-4">
      <Questionnaire defaultItem={defaultItem} onSubmit={setValues}>
        <QuestionnaireProgress />
        <QuestionnaireItem name="role" required invalid={attempted}>
          <QuestionnaireTitle>
            What best describes your role?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            This helps us tailor the setup to your team.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="engineering">
              Engineering
            </QuestionnaireChoice>
            <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
            <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
            <QuestionnaireChoice value="other">
              Something else
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="team-size">
          <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
            <QuestionnaireChoice value="small" defaultChecked>
              2 to 10 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="medium">
              11 to 50 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="large">
              More than 50 people
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="company" required>
          <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
          <QuestionnaireInput placeholder="Acme Inc." />
          <QuestionnaireError>
            Enter a company name to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
      <Result values={values} />
    </View>
  )
}

export function QuestionnaireMidFlowExample() {
  return (
    <Onboarding defaultItem="team-size" />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct QuestionnaireMidFlowExample: View {
  var body: some View {
    QuestionnaireOnboarding(defaultItem: "team-size")
  }
}

struct QuestionnaireStoryActions: View {
  var body: some View {
    QuestionnaireActions {
      QuestionnairePrevious()
      QuestionnaireSkip()
      QuestionnaireNext()
      QuestionnaireSubmit()
    }
  }
}

struct QuestionnaireOnboarding: View {
  var attempted = false

  @State private var controller: QuestionnaireController
  @State private var submitted: String?

  init(defaultItem: String? = nil, attempted: Bool = false) {
    self.attempted = attempted
    _controller = State(initialValue: QuestionnaireController(
      defaultItem: defaultItem,
      defaultValues: ["team-size": ["small"]]
    ))
  }

  var body: some View {
    VStack(alignment: .leading, spacing: 16) {
      Questionnaire(controller: controller) {
        QuestionnaireProgress()
        QuestionnaireItem(name: "role", required: true, invalid: attempted) {
          QuestionnaireTitle("What best describes your role?")
          QuestionnaireDescription("This helps us tailor the setup to your team.")
          QuestionnaireChoices {
            QuestionnaireChoice("Engineering", value: "engineering")
            QuestionnaireChoice("Design", value: "design")
            QuestionnaireChoice("Product", value: "product")
            QuestionnaireChoice("Something else", value: "other")
          }
          QuestionnaireError()
        }
        QuestionnaireItem(name: "team-size") {
          QuestionnaireTitle("How large is your team?")
          QuestionnaireChoices {
            QuestionnaireChoice("Just me", value: "solo")
            QuestionnaireChoice("2 to 10 people", value: "small")
            QuestionnaireChoice("11 to 50 people", value: "medium")
            QuestionnaireChoice("More than 50 people", value: "large")
          }
          QuestionnaireError()
        }
        QuestionnaireItem(name: "company", required: true) {
          QuestionnaireTitle("What is your company called?")
          QuestionnaireInput("Acme Inc.")
          QuestionnaireError("Enter a company name to continue.")
        }
        QuestionnaireStoryActions()
      }
      if let submitted {
        Text(verbatim: submitted)
          .textStyle(.sm)
          .foregroundStyle(EsuissColor.mutedForeground)
          .accessibilityAddTraits(.updatesFrequently)
      }
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .onAppear {
      let controller = controller
      controller.onSubmit = { answers in
        let fields = controller.sequence.compactMap { name -> String? in
          guard let value = answers[name]?.first else { return nil }
          return "\"\(name)\":\"\(value)\""
        }
        submitted = "Submitted: {\(fields.joined(separator: ","))}"
      }
    }
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.Questionnaire
import com.esuiss.ui.components.QuestionnaireActions
import com.esuiss.ui.components.QuestionnaireChoice
import com.esuiss.ui.components.QuestionnaireChoices
import com.esuiss.ui.components.QuestionnaireDescription
import com.esuiss.ui.components.QuestionnaireError
import com.esuiss.ui.components.QuestionnaireInput
import com.esuiss.ui.components.QuestionnaireItem
import com.esuiss.ui.components.QuestionnaireNext
import com.esuiss.ui.components.QuestionnairePrevious
import com.esuiss.ui.components.QuestionnaireProgress
import com.esuiss.ui.components.QuestionnaireSkip
import com.esuiss.ui.components.QuestionnaireSubmit
import com.esuiss.ui.components.QuestionnaireTitle
import com.esuiss.ui.components.Text
import com.esuiss.ui.components.rememberQuestionnaireState
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Composable
fun QuestionnaireMidFlowExample() {
    QuestionnaireOnboarding(defaultItem = "team-size")
}

fun questionnaireJson(values: Map<String, List<String>>): String =
    values.entries.joinToString(",", "{", "}") { (key, list) ->
        "\"$key\":" + list.joinToString(",", "[", "]") { "\"$it\"" }
    }

@Composable
fun QuestionnaireActionsRow() {
    QuestionnaireActions {
        QuestionnairePrevious()
        QuestionnaireSkip()
        QuestionnaireNext()
        QuestionnaireSubmit()
    }
}

@Composable
fun QuestionnaireResult(values: String?) {
    if (values == null) return
    Text(
        "Submitted: $values",
        modifier = Modifier.semantics { liveRegion = LiveRegionMode.Polite },
        style = Typography.sm,
        color = EsuissTheme.colors.mutedForeground,
    )
}

@Composable
fun QuestionnaireOnboarding(defaultItem: String? = null, attempted: Boolean = false) {
    var values by rememberSaveable { mutableStateOf<String?>(null) }
    val state = rememberQuestionnaireState(defaultItem = defaultItem)
    Column(Modifier.fillMaxWidth(), verticalArrangement = Arrangement.spacedBy(16.dp)) {
        Questionnaire(state = state, onSubmit = { values = questionnaireJson(it) }) {
            QuestionnaireProgress()
            QuestionnaireItem(name = "role", required = true, invalid = attempted) {
                QuestionnaireTitle("What best describes your role?")
                QuestionnaireDescription("This helps us tailor the setup to your team.")
                QuestionnaireChoices {
                    QuestionnaireChoice("Engineering", value = "engineering")
                    QuestionnaireChoice("Design", value = "design")
                    QuestionnaireChoice("Product", value = "product")
                    QuestionnaireChoice("Something else", value = "other")
                }
                QuestionnaireError()
            }
            QuestionnaireItem(name = "team-size") {
                QuestionnaireTitle("How large is your team?")
                QuestionnaireChoices {
                    QuestionnaireChoice("Just me", value = "solo")
                    QuestionnaireChoice("2 to 10 people", value = "small", defaultChecked = true)
                    QuestionnaireChoice("11 to 50 people", value = "medium")
                    QuestionnaireChoice("More than 50 people", value = "large")
                }
                QuestionnaireError()
            }
            QuestionnaireItem(name = "company", required = true) {
                QuestionnaireTitle("What is your company called?")
                QuestionnaireInput(placeholder = "Acme Inc.")
                QuestionnaireError("Enter a company name to continue.")
            }
            QuestionnaireActionsRow()
        }
        QuestionnaireResult(values)
    }
}
```

### Invalid

A required question shown in its invalid state with an error message.

![Preview](https://ui.suiss.app/previews/components-questionnaire--invalid.light.webp)

```tsx
import * as React from "react"
import { View } from "react-native"
import { Questionnaire, QuestionnaireActions, QuestionnaireChoice, QuestionnaireChoices, QuestionnaireDescription, QuestionnaireError, QuestionnaireInput, QuestionnaireItem, QuestionnaireNext, QuestionnairePrevious, QuestionnaireProgress, QuestionnaireSkip, QuestionnaireSubmit, QuestionnaireTitle, type QuestionnaireValues } from "@/components/ui/questionnaire"
import { Text } from "@/components/ui/text"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

function Result({ values }: { values: QuestionnaireValues | null }) {
  if (!values) return null
  return (
    <Text role="status" className="text-sm text-muted-foreground">
      {`Submitted: ${JSON.stringify(values)}`}
    </Text>
  )
}

function Onboarding({
  defaultItem,
  attempted = false,
}: {
  defaultItem?: string
  attempted?: boolean
}) {
  const [values, setValues] = React.useState<QuestionnaireValues | null>(null)
  return (
    <View className="w-full gap-4">
      <Questionnaire defaultItem={defaultItem} onSubmit={setValues}>
        <QuestionnaireProgress />
        <QuestionnaireItem name="role" required invalid={attempted}>
          <QuestionnaireTitle>
            What best describes your role?
          </QuestionnaireTitle>
          <QuestionnaireDescription>
            This helps us tailor the setup to your team.
          </QuestionnaireDescription>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="engineering">
              Engineering
            </QuestionnaireChoice>
            <QuestionnaireChoice value="design">Design</QuestionnaireChoice>
            <QuestionnaireChoice value="product">Product</QuestionnaireChoice>
            <QuestionnaireChoice value="other">
              Something else
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="team-size">
          <QuestionnaireTitle>How large is your team?</QuestionnaireTitle>
          <QuestionnaireChoices>
            <QuestionnaireChoice value="solo">Just me</QuestionnaireChoice>
            <QuestionnaireChoice value="small" defaultChecked>
              2 to 10 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="medium">
              11 to 50 people
            </QuestionnaireChoice>
            <QuestionnaireChoice value="large">
              More than 50 people
            </QuestionnaireChoice>
          </QuestionnaireChoices>
          <QuestionnaireError />
        </QuestionnaireItem>
        <QuestionnaireItem name="company" required>
          <QuestionnaireTitle>What is your company called?</QuestionnaireTitle>
          <QuestionnaireInput placeholder="Acme Inc." />
          <QuestionnaireError>
            Enter a company name to continue.
          </QuestionnaireError>
        </QuestionnaireItem>
        <Actions />
      </Questionnaire>
      <Result values={values} />
    </View>
  )
}

export function QuestionnaireInvalidExample() {
  return (
    <Onboarding attempted />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct QuestionnaireInvalidExample: View {
  var body: some View {
    QuestionnaireOnboarding(attempted: true)
  }
}

struct QuestionnaireStoryActions: View {
  var body: some View {
    QuestionnaireActions {
      QuestionnairePrevious()
      QuestionnaireSkip()
      QuestionnaireNext()
      QuestionnaireSubmit()
    }
  }
}

struct QuestionnaireOnboarding: View {
  var attempted = false

  @State private var controller: QuestionnaireController
  @State private var submitted: String?

  init(defaultItem: String? = nil, attempted: Bool = false) {
    self.attempted = attempted
    _controller = State(initialValue: QuestionnaireController(
      defaultItem: defaultItem,
      defaultValues: ["team-size": ["small"]]
    ))
  }

  var body: some View {
    VStack(alignment: .leading, spacing: 16) {
      Questionnaire(controller: controller) {
        QuestionnaireProgress()
        QuestionnaireItem(name: "role", required: true, invalid: attempted) {
          QuestionnaireTitle("What best describes your role?")
          QuestionnaireDescription("This helps us tailor the setup to your team.")
          QuestionnaireChoices {
            QuestionnaireChoice("Engineering", value: "engineering")
            QuestionnaireChoice("Design", value: "design")
            QuestionnaireChoice("Product", value: "product")
            QuestionnaireChoice("Something else", value: "other")
          }
          QuestionnaireError()
        }
        QuestionnaireItem(name: "team-size") {
          QuestionnaireTitle("How large is your team?")
          QuestionnaireChoices {
            QuestionnaireChoice("Just me", value: "solo")
            QuestionnaireChoice("2 to 10 people", value: "small")
            QuestionnaireChoice("11 to 50 people", value: "medium")
            QuestionnaireChoice("More than 50 people", value: "large")
          }
          QuestionnaireError()
        }
        QuestionnaireItem(name: "company", required: true) {
          QuestionnaireTitle("What is your company called?")
          QuestionnaireInput("Acme Inc.")
          QuestionnaireError("Enter a company name to continue.")
        }
        QuestionnaireStoryActions()
      }
      if let submitted {
        Text(verbatim: submitted)
          .textStyle(.sm)
          .foregroundStyle(EsuissColor.mutedForeground)
          .accessibilityAddTraits(.updatesFrequently)
      }
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .onAppear {
      let controller = controller
      controller.onSubmit = { answers in
        let fields = controller.sequence.compactMap { name -> String? in
          guard let value = answers[name]?.first else { return nil }
          return "\"\(name)\":\"\(value)\""
        }
        submitted = "Submitted: {\(fields.joined(separator: ","))}"
      }
    }
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.Questionnaire
import com.esuiss.ui.components.QuestionnaireActions
import com.esuiss.ui.components.QuestionnaireChoice
import com.esuiss.ui.components.QuestionnaireChoices
import com.esuiss.ui.components.QuestionnaireDescription
import com.esuiss.ui.components.QuestionnaireError
import com.esuiss.ui.components.QuestionnaireInput
import com.esuiss.ui.components.QuestionnaireItem
import com.esuiss.ui.components.QuestionnaireNext
import com.esuiss.ui.components.QuestionnairePrevious
import com.esuiss.ui.components.QuestionnaireProgress
import com.esuiss.ui.components.QuestionnaireSkip
import com.esuiss.ui.components.QuestionnaireSubmit
import com.esuiss.ui.components.QuestionnaireTitle
import com.esuiss.ui.components.Text
import com.esuiss.ui.components.rememberQuestionnaireState
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Composable
fun QuestionnaireInvalidExample() {
    QuestionnaireOnboarding(attempted = true)
}

fun questionnaireJson(values: Map<String, List<String>>): String =
    values.entries.joinToString(",", "{", "}") { (key, list) ->
        "\"$key\":" + list.joinToString(",", "[", "]") { "\"$it\"" }
    }

@Composable
fun QuestionnaireActionsRow() {
    QuestionnaireActions {
        QuestionnairePrevious()
        QuestionnaireSkip()
        QuestionnaireNext()
        QuestionnaireSubmit()
    }
}

@Composable
fun QuestionnaireResult(values: String?) {
    if (values == null) return
    Text(
        "Submitted: $values",
        modifier = Modifier.semantics { liveRegion = LiveRegionMode.Polite },
        style = Typography.sm,
        color = EsuissTheme.colors.mutedForeground,
    )
}

@Composable
fun QuestionnaireOnboarding(defaultItem: String? = null, attempted: Boolean = false) {
    var values by rememberSaveable { mutableStateOf<String?>(null) }
    val state = rememberQuestionnaireState(defaultItem = defaultItem)
    Column(Modifier.fillMaxWidth(), verticalArrangement = Arrangement.spacedBy(16.dp)) {
        Questionnaire(state = state, onSubmit = { values = questionnaireJson(it) }) {
            QuestionnaireProgress()
            QuestionnaireItem(name = "role", required = true, invalid = attempted) {
                QuestionnaireTitle("What best describes your role?")
                QuestionnaireDescription("This helps us tailor the setup to your team.")
                QuestionnaireChoices {
                    QuestionnaireChoice("Engineering", value = "engineering")
                    QuestionnaireChoice("Design", value = "design")
                    QuestionnaireChoice("Product", value = "product")
                    QuestionnaireChoice("Something else", value = "other")
                }
                QuestionnaireError()
            }
            QuestionnaireItem(name = "team-size") {
                QuestionnaireTitle("How large is your team?")
                QuestionnaireChoices {
                    QuestionnaireChoice("Just me", value = "solo")
                    QuestionnaireChoice("2 to 10 people", value = "small", defaultChecked = true)
                    QuestionnaireChoice("11 to 50 people", value = "medium")
                    QuestionnaireChoice("More than 50 people", value = "large")
                }
                QuestionnaireError()
            }
            QuestionnaireItem(name = "company", required = true) {
                QuestionnaireTitle("What is your company called?")
                QuestionnaireInput(placeholder = "Acme Inc.")
                QuestionnaireError("Enter a company name to continue.")
            }
            QuestionnaireActionsRow()
        }
        QuestionnaireResult(values)
    }
}
```

### Multiple choice

A `multiple` item that accepts several checked choices.

![Preview](https://ui.suiss.app/previews/components-questionnaire--multiple-choice.light.webp)

```tsx
import { Questionnaire, QuestionnaireActions, QuestionnaireChoice, QuestionnaireChoices, QuestionnaireDescription, QuestionnaireError, QuestionnaireItem, QuestionnaireNext, QuestionnairePrevious, QuestionnaireProgress, QuestionnaireSkip, QuestionnaireSubmit, QuestionnaireTitle } from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export function QuestionnaireMultipleChoiceExample() {
  return (
    <Questionnaire>
      <QuestionnaireProgress />
      <QuestionnaireItem name="features" multiple required>
        <QuestionnaireTitle>
          Which features do you plan to use?
        </QuestionnaireTitle>
        <QuestionnaireDescription>
          Select all that apply.
        </QuestionnaireDescription>
        <QuestionnaireChoices>
          <QuestionnaireChoice value="analytics" defaultChecked>
            Analytics
          </QuestionnaireChoice>
          <QuestionnaireChoice value="billing" defaultChecked>
            Billing
          </QuestionnaireChoice>
          <QuestionnaireChoice value="automations">
            Automations
          </QuestionnaireChoice>
          <QuestionnaireChoice value="integrations" disabled>
            Integrations
          </QuestionnaireChoice>
        </QuestionnaireChoices>
        <QuestionnaireError>Choose at least one feature.</QuestionnaireError>
      </QuestionnaireItem>
      <Actions />
    </Questionnaire>
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct QuestionnaireStoryActions: View {
  var body: some View {
    QuestionnaireActions {
      QuestionnairePrevious()
      QuestionnaireSkip()
      QuestionnaireNext()
      QuestionnaireSubmit()
    }
  }
}

struct QuestionnaireMultipleChoice: View {
  @State private var controller = QuestionnaireController(defaultValues: ["features": ["analytics", "billing"]])

  var body: some View {
    Questionnaire(controller: controller) {
      QuestionnaireProgress()
      QuestionnaireItem(name: "features", required: true, multiple: true) {
        QuestionnaireTitle("Which features do you plan to use?")
        QuestionnaireDescription("Select all that apply.")
        QuestionnaireChoices {
          QuestionnaireChoice("Analytics", value: "analytics")
          QuestionnaireChoice("Billing", value: "billing")
          QuestionnaireChoice("Automations", value: "automations")
          QuestionnaireChoice("Integrations", value: "integrations", disabled: true)
        }
        QuestionnaireError("Choose at least one feature.")
      }
      QuestionnaireStoryActions()
    }
  }
}
```

```kotlin
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import com.esuiss.ui.components.Questionnaire
import com.esuiss.ui.components.QuestionnaireActions
import com.esuiss.ui.components.QuestionnaireChoice
import com.esuiss.ui.components.QuestionnaireChoices
import com.esuiss.ui.components.QuestionnaireDescription
import com.esuiss.ui.components.QuestionnaireError
import com.esuiss.ui.components.QuestionnaireItem
import com.esuiss.ui.components.QuestionnaireNext
import com.esuiss.ui.components.QuestionnairePrevious
import com.esuiss.ui.components.QuestionnaireProgress
import com.esuiss.ui.components.QuestionnaireSkip
import com.esuiss.ui.components.QuestionnaireSubmit
import com.esuiss.ui.components.QuestionnaireTitle

@Composable
fun QuestionnaireActionsRow() {
    QuestionnaireActions {
        QuestionnairePrevious()
        QuestionnaireSkip()
        QuestionnaireNext()
        QuestionnaireSubmit()
    }
}

@Composable
fun QuestionnaireMultipleChoice() {
    Questionnaire(Modifier.fillMaxWidth()) {
        QuestionnaireProgress()
        QuestionnaireItem(name = "features", multiple = true, required = true) {
            QuestionnaireTitle("Which features do you plan to use?")
            QuestionnaireDescription("Select all that apply.")
            QuestionnaireChoices {
                QuestionnaireChoice("Analytics", value = "analytics", defaultChecked = true)
                QuestionnaireChoice("Billing", value = "billing", defaultChecked = true)
                QuestionnaireChoice("Automations", value = "automations")
                QuestionnaireChoice("Integrations", value = "integrations", enabled = false)
            }
            QuestionnaireError("Choose at least one feature.")
        }
        QuestionnaireActionsRow()
    }
}
```

### With choice descriptions

Choices with secondary text from `QuestionnaireChoiceDescription`.

![Preview](https://ui.suiss.app/previews/components-questionnaire--with-choice-descriptions.light.webp)

```tsx
import { Questionnaire, QuestionnaireActions, QuestionnaireChoice, QuestionnaireChoiceDescription, QuestionnaireChoices, QuestionnaireError, QuestionnaireItem, QuestionnaireNext, QuestionnairePrevious, QuestionnaireProgress, QuestionnaireSkip, QuestionnaireSubmit, QuestionnaireTitle } from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export function QuestionnaireWithChoiceDescriptionsExample() {
  return (
    <Questionnaire>
      <QuestionnaireProgress />
      <QuestionnaireItem name="plan" required>
        <QuestionnaireTitle>Which plan fits you best?</QuestionnaireTitle>
        <QuestionnaireChoices>
          <QuestionnaireChoice value="starter">
            Starter
            <QuestionnaireChoiceDescription>
              For individuals trying things out.
            </QuestionnaireChoiceDescription>
          </QuestionnaireChoice>
          <QuestionnaireChoice value="team" defaultChecked>
            Team
            <QuestionnaireChoiceDescription>
              Shared workspaces and roles for growing teams.
            </QuestionnaireChoiceDescription>
          </QuestionnaireChoice>
          <QuestionnaireChoice value="enterprise">
            Enterprise
            <QuestionnaireChoiceDescription>
              Single sign-on, audit logs, and priority support.
            </QuestionnaireChoiceDescription>
          </QuestionnaireChoice>
        </QuestionnaireChoices>
        <QuestionnaireError />
      </QuestionnaireItem>
      <Actions />
    </Questionnaire>
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct QuestionnaireStoryActions: View {
  var body: some View {
    QuestionnaireActions {
      QuestionnairePrevious()
      QuestionnaireSkip()
      QuestionnaireNext()
      QuestionnaireSubmit()
    }
  }
}

struct QuestionnaireChoiceDescriptions: View {
  @State private var controller = QuestionnaireController(defaultValues: ["plan": ["team"]])

  var body: some View {
    Questionnaire(controller: controller) {
      QuestionnaireProgress()
      QuestionnaireItem(name: "plan", required: true) {
        QuestionnaireTitle("Which plan fits you best?")
        QuestionnaireChoices {
          QuestionnaireChoice(value: "starter") {
            Text("Starter")
            QuestionnaireChoiceDescription("For individuals trying things out.")
          }
          QuestionnaireChoice(value: "team") {
            Text("Team")
            QuestionnaireChoiceDescription("Shared workspaces and roles for growing teams.")
          }
          QuestionnaireChoice(value: "enterprise") {
            Text("Enterprise")
            QuestionnaireChoiceDescription("Single sign-on, audit logs, and priority support.")
          }
        }
        QuestionnaireError()
      }
      QuestionnaireStoryActions()
    }
  }
}
```

```kotlin
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import com.esuiss.ui.components.Questionnaire
import com.esuiss.ui.components.QuestionnaireActions
import com.esuiss.ui.components.QuestionnaireChoice
import com.esuiss.ui.components.QuestionnaireChoiceDescription
import com.esuiss.ui.components.QuestionnaireChoices
import com.esuiss.ui.components.QuestionnaireError
import com.esuiss.ui.components.QuestionnaireItem
import com.esuiss.ui.components.QuestionnaireNext
import com.esuiss.ui.components.QuestionnairePrevious
import com.esuiss.ui.components.QuestionnaireProgress
import com.esuiss.ui.components.QuestionnaireSkip
import com.esuiss.ui.components.QuestionnaireSubmit
import com.esuiss.ui.components.QuestionnaireTitle
import com.esuiss.ui.components.Text

@Composable
fun QuestionnaireActionsRow() {
    QuestionnaireActions {
        QuestionnairePrevious()
        QuestionnaireSkip()
        QuestionnaireNext()
        QuestionnaireSubmit()
    }
}

@Composable
fun QuestionnaireWithChoiceDescriptions() {
    Questionnaire(Modifier.fillMaxWidth()) {
        QuestionnaireProgress()
        QuestionnaireItem(name = "plan", required = true) {
            QuestionnaireTitle("Which plan fits you best?")
            QuestionnaireChoices {
                QuestionnaireChoice(value = "starter") {
                    Text("Starter")
                    QuestionnaireChoiceDescription("For individuals trying things out.")
                }
                QuestionnaireChoice(value = "team", defaultChecked = true) {
                    Text("Team")
                    QuestionnaireChoiceDescription("Shared workspaces and roles for growing teams.")
                }
                QuestionnaireChoice(value = "enterprise") {
                    Text("Enterprise")
                    QuestionnaireChoiceDescription("Single sign-on, audit logs, and priority support.")
                }
            }
            QuestionnaireError()
        }
        QuestionnaireActionsRow()
    }
}
```

### Text input

A required question answered with `QuestionnaireInput`.

![Preview](https://ui.suiss.app/previews/components-questionnaire--text-input.light.webp)

```tsx
import { Questionnaire, QuestionnaireActions, QuestionnaireDescription, QuestionnaireError, QuestionnaireInput, QuestionnaireItem, QuestionnaireNext, QuestionnairePrevious, QuestionnaireProgress, QuestionnaireSkip, QuestionnaireSubmit, QuestionnaireTitle } from "@/components/ui/questionnaire"

function Actions() {
  return (
    <QuestionnaireActions>
      <QuestionnairePrevious />
      <QuestionnaireSkip />
      <QuestionnaireNext />
      <QuestionnaireSubmit />
    </QuestionnaireActions>
  )
}

export function QuestionnaireTextInputExample() {
  return (
    <Questionnaire>
      <QuestionnaireProgress />
      <QuestionnaireItem name="email" required>
        <QuestionnaireTitle>
          Where should we send your results?
        </QuestionnaireTitle>
        <QuestionnaireDescription>
          We only use your email to share the report.
        </QuestionnaireDescription>
        <QuestionnaireInput type="email" placeholder="you@example.com" />
        <QuestionnaireError>
          Enter an email address to continue.
        </QuestionnaireError>
      </QuestionnaireItem>
      <Actions />
    </Questionnaire>
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct QuestionnaireStoryActions: View {
  var body: some View {
    QuestionnaireActions {
      QuestionnairePrevious()
      QuestionnaireSkip()
      QuestionnaireNext()
      QuestionnaireSubmit()
    }
  }
}

struct QuestionnaireTextInput: View {
  @State private var controller = QuestionnaireController()

  var body: some View {
    Questionnaire(controller: controller) {
      QuestionnaireProgress()
      QuestionnaireItem(name: "email", required: true) {
        QuestionnaireTitle("Where should we send your results?")
        QuestionnaireDescription("We only use your email to share the report.")
        QuestionnaireInput("you@example.com", keyboard: .emailAddress, contentType: .emailAddress)
        QuestionnaireError("Enter an email address to continue.")
      }
      QuestionnaireStoryActions()
    }
  }
}
```

```kotlin
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.input.KeyboardType
import com.esuiss.ui.components.Questionnaire
import com.esuiss.ui.components.QuestionnaireActions
import com.esuiss.ui.components.QuestionnaireDescription
import com.esuiss.ui.components.QuestionnaireError
import com.esuiss.ui.components.QuestionnaireInput
import com.esuiss.ui.components.QuestionnaireItem
import com.esuiss.ui.components.QuestionnaireNext
import com.esuiss.ui.components.QuestionnairePrevious
import com.esuiss.ui.components.QuestionnaireProgress
import com.esuiss.ui.components.QuestionnaireSkip
import com.esuiss.ui.components.QuestionnaireSubmit
import com.esuiss.ui.components.QuestionnaireTitle

@Composable
fun QuestionnaireActionsRow() {
    QuestionnaireActions {
        QuestionnairePrevious()
        QuestionnaireSkip()
        QuestionnaireNext()
        QuestionnaireSubmit()
    }
}

@Composable
fun QuestionnaireTextInput() {
    Questionnaire(Modifier.fillMaxWidth()) {
        QuestionnaireProgress()
        QuestionnaireItem(name = "email", required = true) {
            QuestionnaireTitle("Where should we send your results?")
            QuestionnaireDescription("We only use your email to share the report.")
            QuestionnaireInput(
                placeholder = "you@example.com",
                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Email),
            )
            QuestionnaireError("Enter an email address to continue.")
        }
        QuestionnaireActionsRow()
    }
}
```

## API Reference

### Questionnaire

Root that holds the state and the active question.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `items` | `QuestionnaireItemDefinition[]` | - | The questions in order, each with a `name` and optional `required` and `disabled`. |
| `item` | `string` | - | The name of the current question, for controlled use. |
| `defaultItem` | `string` | - | The question to start on when uncontrolled. |
| `onItemChange` | `(item: string) => void` | - | Called when the current question changes. |
| `onSubmit` | `(values: QuestionnaireValues) => void` | - | Called with the answers when the last question is submitted. |

Also accepts the props of `React.ComponentProps<typeof View>`, `React.RefAttributes<View>`, `UseQuestionnaireParameters`.

### QuestionnaireProgress

Shows the current question number and total.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `children` | `\| React.ReactNode \| ((state: QuestionnaireState) => React.ReactNode)` | - |  |

Also accepts the props of `React.ComponentProps<typeof View>`, `React.RefAttributes<View>`.

### QuestionnaireItem

One question; shown only while active.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `name` | `string` | Required | Unique key for the answer. |
| `required` | `boolean` | `false` | Requires an answer before moving on and hides Skip. |
| `disabled` | `boolean` | `false` | Removes the item from the sequence. |
| `invalid` | `boolean` | `false` | Forces the invalid state. |
| `multiple` | `boolean` | `false` | Allows more than one choice. |
| `onStatusChange` | `(status: QuestionnaireItemStatus) => void` | - | Called when the status changes to `unanswered`, `answered` or `skipped`. |

Also accepts the props of `React.ComponentProps<typeof View>`, `React.RefAttributes<View>`.

### QuestionnaireTitle

The question heading.

Also accepts the props of `React.ComponentProps<typeof Text>`, `React.RefAttributes<typeof Text>`.

### QuestionnaireDescription

Secondary text under the title.

Also accepts the props of `React.ComponentProps<typeof Text>`, `React.RefAttributes<typeof Text>`.

### QuestionnaireChoices

Stack of choice rows.

Also accepts the props of `React.ComponentProps<typeof View>`, `React.RefAttributes<View>`.

### QuestionnaireChoice

A selectable answer row.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `value` | `string` | Required | Value stored when the choice is selected. |
| `checked` | `boolean` | - | Controlled checked state. |
| `defaultChecked` | `boolean` | `false` | Initial checked state. |
| `disabled` | `boolean` | `false` | Disables the choice. |
| `onCheckedChange` | `(checked: boolean) => void` | - | Called with the next checked state. |
| `children` | `React.ReactNode` | - |  |

Also accepts the props of `React.ComponentProps<typeof Pressable>`, `React.RefAttributes<View>`.

### QuestionnaireChoiceDescription

Secondary text inside a choice.

Also accepts the props of `React.ComponentProps<typeof Text>`, `React.RefAttributes<typeof Text>`.

### QuestionnaireInput

Text field for a typed answer.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `type` | `QuestionnaireInputType` | `"text"` | `text`, `email`, `number`, `tel`, `url`, `password` or `search`; sets keyboard and autofill props. |

Also accepts the props of `React.ComponentProps<typeof Input>`.

### QuestionnaireError

Validation message shown when the item is invalid.

Also accepts the props of `React.ComponentProps<typeof Text>`, `React.RefAttributes<typeof Text>`.

### QuestionnaireActions

Row for the navigation buttons.

Also accepts the props of `React.ComponentProps<typeof View>`, `React.RefAttributes<View>`.

### QuestionnairePrevious

Goes to the previous question.

Also accepts the props of `QuestionnaireNavigationProps`.

### QuestionnaireSkip

Skips the active question when it is optional.

Also accepts the props of `QuestionnaireNavigationProps`.

### QuestionnaireNext

Validates and moves to the next question.

Also accepts the props of `QuestionnaireNavigationProps`.

### QuestionnaireSubmit

Validates all questions and calls `onSubmit` on the last step.

Also accepts the props of `QuestionnaireNavigationProps`.

## Accessibility

- Each item has the `radiogroup` role, or `group` when `multiple`, and is labelled by its `QuestionnaireTitle`, which has the `heading` role.
- Choices have the `radio` or `checkbox` role with checked and disabled states.
- `QuestionnaireInput` is labelled by the title unless you pass an `accessibilityLabel`.
- `QuestionnaireProgress` has the `progressbar` role, a value such as "Question 2 of 3" and a polite live region.
- `QuestionnaireError` has the `alert` role with a polite live region.
- Slide transitions respect the system reduce motion setting.

## Notes

- Selecting a choice plays a selection haptic when a haptics adapter is provided through `HapticsContext`.
- Selected choices use `border-primary` and `bg-primary`; invalid items use `border-destructive`.
- The slide direction flips for right-to-left layouts.
- Light and dark colors follow the system appearance.