@material-ui/lab/modern/internal/pickers/hooks/useMaskedInput.js

Laboratory for new Material-UI modules.

import _extends from "@babel/runtime/helpers/esm/extends";
import * as React from 'react';
import { useRifm } from 'rifm';
import { useUtils } from './useUtils';
import { createDelegatedEventHandler } from '../utils';
import { maskedDateFormatter, getDisplayDate, checkMaskIsValidForCurrentFormat } from '../text-field-helper';
export function useMaskedInput({
  acceptRegex = /[\d]/gi,
  disabled,
  disableMaskedInput,
  ignoreInvalidInputs,
  inputFormat,
  inputProps,
  label,
  mask,
  onChange,
  rawValue,
  readOnly,
  rifmFormatter,
  TextFieldProps,
  validationError
}) {
  const utils = useUtils();
  const [isFocused, setIsFocused] = React.useState(false);
  const formatHelperText = utils.getFormatHelperText(inputFormat);
  const shouldUseMaskedInput = React.useMemo(() => {
    // formatting of dates is a quite slow thing, so do not make useless .format calls
    if (!mask || disableMaskedInput) {
      return false;
    }

    return checkMaskIsValidForCurrentFormat(mask, inputFormat, acceptRegex, utils);
  }, [acceptRegex, disableMaskedInput, inputFormat, mask, utils]);
  const formatter = React.useMemo(() => shouldUseMaskedInput && mask ? maskedDateFormatter(mask, acceptRegex) : st => st, [acceptRegex, mask, shouldUseMaskedInput]); // TODO: Implement with controlled vs unctrolled `rawValue`

  const currentInputValue = getDisplayDate(utils, rawValue, inputFormat);
  const [innerInputValue, setInnerInputValue] = React.useState(currentInputValue);
  const previousInputValueRef = React.useRef(currentInputValue);
  React.useEffect(() => {
    previousInputValueRef.current = currentInputValue;
  }, [currentInputValue]);
  const notTyping = !isFocused;
  const valueChanged = previousInputValueRef.current !== currentInputValue; // Update the input value only if the value changed outside of typing

  if (notTyping && valueChanged && (rawValue === null || utils.isValid(rawValue))) {
    if (currentInputValue !== innerInputValue) {
      setInnerInputValue(currentInputValue);
    }
  }

  const handleChange = text => {
    const finalString = text === '' || text === mask ? '' : text;
    setInnerInputValue(finalString);
    const date = finalString === null ? null : utils.parse(finalString, inputFormat);

    if (ignoreInvalidInputs && !utils.isValid(date)) {
      return;
    }

    onChange(date, finalString || undefined);
  };

  const rifmProps = useRifm({
    value: innerInputValue,
    onChange: handleChange,
    format: rifmFormatter || formatter
  });
  const inputStateArgs = shouldUseMaskedInput ? rifmProps : {
    value: innerInputValue,
    onChange: event => {
      handleChange(event.currentTarget.value);
    }
  };
  return _extends({
    label,
    disabled,
    error: validationError,
    inputProps: _extends({}, inputStateArgs, {
      disabled,
      placeholder: formatHelperText,
      readOnly,
      type: shouldUseMaskedInput ? 'tel' : 'text'
    }, inputProps, {
      onFocus: createDelegatedEventHandler(() => {
        setIsFocused(true);
      }, inputProps?.onFocus),
      onBlur: createDelegatedEventHandler(() => {
        setIsFocused(false);
      }, inputProps?.onBlur)
    })
  }, TextFieldProps);
}
export default useMaskedInput;