refun/node/map-focused.js

A collection of React Hook-enabled functions that compose harmoniously with each other. Similar to `recompose`, but:

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.mapFocused = void 0;

var _react = require("react");

var _tsfn = require("tsfn");

const mapFocused = props => {
  const [isFocused, setIsFocused] = (0, _react.useState)(false);
  const origOnFocusRef = (0, _react.useRef)();
  const origOnBlurRef = (0, _react.useRef)();
  const onFocusRef = (0, _react.useRef)(_tsfn.NOOP);
  const onBlurRef = (0, _react.useRef)(_tsfn.NOOP);
  origOnFocusRef.current = props.onFocus;
  origOnBlurRef.current = props.onBlur;

  if (onFocusRef.current === _tsfn.NOOP) {
    onFocusRef.current = () => {
      setIsFocused(true);

      if ((0, _tsfn.isFunction)(origOnFocusRef.current)) {
        origOnFocusRef.current();
      }
    };
  }

  if (onBlurRef.current === _tsfn.NOOP) {
    onBlurRef.current = () => {
      setIsFocused(false);

      if ((0, _tsfn.isFunction)(origOnBlurRef.current)) {
        origOnBlurRef.current();
      }
    };
  }

  return { ...props,
    isFocused: isFocused || Boolean(props.isFocused),
    onFocus: onFocusRef.current,
    onBlur: onBlurRef.current
  };
};

exports.mapFocused = mapFocused;