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import {
DatePicker,
DatePickerProps,
usePickerAdapter,
usePickerContext,
} from "@mui/x-date-pickers";
import { useTranslation } from "i18n";
import { Control, Controller, UseControllerProps } from "react-hook-form";
import { Temporal } from "temporal-polyfill";
import { getMuiDateFormat } from "utils/date";
import dayjs, { Dayjs } from "utils/dayjs";
interface DatepickerProps {
className?: string;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
control: Control<any>;
defaultValue?: Temporal.PlainDate;
error: boolean;
helperText: React.ReactNode;
id: string;
rules?: UseControllerProps["rules"];
label?: string;
name: string;
minValue?: Temporal.PlainDate;
maxValue?: Temporal.PlainDate;
openTo?: "year" | "month" | "day";
onPostChange?(value: Temporal.PlainDate | null): void;
testId?: string;
}
type BaseDatepickerProps = Omit<
DatepickerProps,
"error" | "helperText" | "id"
> &
Pick<DatePickerProps, "slots" | "slotProps"> & {
format: string;
};
// Convert between our API's Temporal.PlainDate and MUI's expected Dayjs values.
// Use the browser timezone in case we compare to now, aka dayjs().
function temporalToDayjs(value: Temporal.PlainDate): Dayjs {
return dayjs(value.toString(), "YYYY-MM-DD");
}
function dayjsToTemporal(value: Dayjs): Temporal.PlainDate {
return Temporal.PlainDate.from(value.format("YYYY-MM-DD"));
}
const BaseDatepicker = ({
className,
control,
defaultValue,
rules,
label,
minValue = dayjsToTemporal(dayjs()),
maxValue,
name,
openTo = "day",
onPostChange,
testId,
format,
slots,
slotProps,
}: BaseDatepickerProps) => {
return (
<Controller
control={control}
defaultValue={defaultValue ?? null}
name={name}
rules={rules}
render={({ field }) => (
<DatePicker
data-testid={testId}
{...field}
className={className}
label={label}
value={field.value ? temporalToDayjs(field.value) : null}
minDate={minValue ? temporalToDayjs(minValue) : undefined}
maxDate={maxValue ? temporalToDayjs(maxValue) : undefined}
onChange={(valueDayjs: Dayjs | null) => {
const valueTemporal =
valueDayjs && valueDayjs.isValid()
? dayjsToTemporal(valueDayjs)
: null;
field.onChange(valueTemporal);
onPostChange?.(valueTemporal);
}}
openTo={openTo}
views={["year", "month", "day"]}
format={format}
slots={slots}
slotProps={slotProps}
/>
)}
/>
);
};
const Datepicker = ({
className,
control,
defaultValue,
error,
helperText,
id,
rules,
label,
minValue,
maxValue,
name,
openTo,
onPostChange,
testId,
}: DatepickerProps) => {
const { t, i18n } = useTranslation();
const ariaLabel = t("components.datepicker.change_date");
const helperNode = (
<span data-testid={`${name}-helper-text`}>{helperText}</span>
);
return (
<BaseDatepicker
className={className}
control={control}
defaultValue={defaultValue}
rules={rules}
label={label}
minValue={minValue}
maxValue={maxValue}
name={name}
openTo={openTo}
onPostChange={onPostChange}
testId={testId}
format={getMuiDateFormat(i18n.language)}
slotProps={{
textField: {
fullWidth: true,
id,
error,
helperText: helperNode,
variant: "standard",
slotProps: {
inputLabel: { shrink: true },
input: { "aria-label": ariaLabel },
},
},
// Shrink the calendar button so its circular hover/ripple stays within
// the input's content box instead of overlapping the (standard variant)
// underline.
openPickerButton: {
size: "small",
},
}}
/>
);
};
interface ReadOnlyDateFieldProps {
id?: string;
error?: boolean;
helperText?: React.ReactNode;
variant?: "standard" | "outlined" | "filled";
ariaLabel: string;
inputProps?: InputProps;
}
// Read-only field used by PickerOnlyDatepicker. It renders the selected date as
// a localized long date (month name) and is blank when no date is set, so there
// is never an editable section mask or format placeholder. Clicking it opens the
// calendar, which is the only way to set the value.
const ReadOnlyDateField = ({
id,
error,
helperText,
variant,
ariaLabel,
inputProps,
}: ReadOnlyDateFieldProps) => {
const pickerContext = usePickerContext<Dayjs | null>();
const adapter = usePickerAdapter();
const value = pickerContext.value;
// Format through the picker adapter so the long date respects the picker's
// adapterLocale (e.g. German "8. April 1990"), not just dayjs's global locale.
const display = value ? adapter.formatByString(value, "LL") : "";
return (
<TextField
ref={pickerContext.triggerRef}
className={pickerContext.rootClassName}
id={id}
label={pickerContext.label}
error={error}
helperText={helperText}
variant={variant}
fullWidth
value={display}
onClick={() => pickerContext.setOpen(true)}
slotProps={{
inputLabel: { shrink: true },
htmlInput: { readOnly: true, "aria-label": ariaLabel },
input: inputProps,
}}
/>
);
};
interface PickerOnlyDatepickerProps extends DatepickerProps {
variant?: "standard" | "outlined" | "filled";
inputProps?: InputProps;
}
// A date field that can only be set through the picker: no text input, no mask
// placeholder, clicking anywhere (not just the icon) opens the calendar, and the
// chosen date is shown as a localized long date with the month name
// (e.g. "May 25, 1990"). Contrast with the default editable Datepicker, whose
// field is an editable, parseable numeric date in the locale's format.
export const PickerOnlyDatepicker = ({
className,
control,
defaultValue,
error,
helperText,
id,
rules,
label,
minValue,
maxValue,
name,
openTo,
onPostChange,
testId,
variant = "standard",
inputProps = {},
}: PickerOnlyDatepickerProps) => {
const { t } = useTranslation();
const ariaLabel = t("components.datepicker.change_date");
const helperNode = (
<span data-testid={`${name}-helper-text`}>{helperText}</span>
);
const readOnlyFieldProps: ReadOnlyDateFieldProps = {
id,
error,
helperText: helperNode,
variant,
ariaLabel,
inputProps,
};
return (
<BaseDatepicker
className={className}
control={control}
defaultValue={defaultValue}
rules={rules}
label={label}
minValue={minValue}
maxValue={maxValue}
name={name}
openTo={openTo}
onPostChange={onPostChange}
testId={testId}
// "LL" is the localized long date with the month name (e.g. "May 25, 1990")
format="LL"
slots={{ field: ReadOnlyDateField }}
slotProps={{ field: readOnlyFieldProps }}
/>
);
};
export default Datepicker;
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