@fruits-chain/react-native-xiaoshu/lib/module/number-input/index.js

React Native UI library

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

import React, { useState, useCallback, useRef, memo, forwardRef } from 'react';
import TextInput from '../text-input';
import { usePersistFn, useUpdateEffect } from '../hooks';
import { noop, formatNumber, isValue, isDef } from '../helpers';

const parserNumberToString = n => `${isDef(n) ? n : ''}`;

const defaultFormatter = t => t;

const defaultParser = t => Number(formatNumber(t));

const NumberInput = /*#__PURE__*/forwardRef((_ref, ref) => {
  let {
    type = 'number',
    onChangeNumber,
    min = Number.MIN_SAFE_INTEGER,
    max = Number.MAX_SAFE_INTEGER,
    formatter,
    parser,
    value,
    defaultValue,
    onChangeText,
    onEndEditing,
    ...restProps
  } = _ref;
  const onChangeTextPersistFn = usePersistFn(onChangeText || noop);
  const onEndEditingPersistFn = usePersistFn(onEndEditing || noop);
  const onChangeNumberPersistFn = usePersistFn(onChangeNumber || noop);
  const parserPersistFn = usePersistFn(parser || defaultParser);
  const formatterPersistFn = usePersistFn(formatter || defaultFormatter);
  const [localValue, setLocalValue] = useState(formatterPersistFn(parserNumberToString(isValue(value) ? value : defaultValue)));
  /** 记录外部的数值 */

  const LastValue = useRef(parserPersistFn(localValue));
  const LastNewValue = useRef(value); // 同步数据

  useUpdateEffect(() => {
    // 记录上次/当前外部的数字
    LastValue.current = value; // 更新内部的值

    setLocalValue(formatterPersistFn(parserNumberToString(value)));
    LastNewValue.current = value;
  }, [value]);
  const responseValue = useCallback( // eslint-disable-next-line @typescript-eslint/no-inferrable-types
  function (t) {
    let sync = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

    if (isDef(t) && t !== '') {
      // 格式化值
      let newValue = parserPersistFn(t); // 最大最小值

      if (newValue > max) {
        newValue = max;
      }

      if (newValue < min) {
        newValue = min;
      }

      if (newValue !== LastValue.current && LastNewValue.current !== newValue) {
        // 更新上次计算的新值
        LastNewValue.current = newValue; // 触发更新

        onChangeNumberPersistFn(newValue);
      }

      if (sync) {
        // 更新上次计算的新值
        LastNewValue.current = newValue;
        setLocalValue(formatterPersistFn(parserNumberToString(newValue)));
      }
    } else {
      // 清空的数据
      onChangeNumberPersistFn(null);
    }
  }, [formatterPersistFn, max, min, onChangeNumberPersistFn, parserPersistFn]);
  const onChangeTextTextInput = useCallback(t => {
    setLocalValue(formatterPersistFn(t));
    onChangeTextPersistFn(t);
    responseValue(t);
  }, [formatterPersistFn, onChangeTextPersistFn, responseValue]);
  const onEndEditingTextInput = useCallback(e => {
    setLocalValue(formatterPersistFn(e.nativeEvent.text));
    onEndEditingPersistFn(e); // 转换数据

    responseValue(e.nativeEvent.text, true);
  }, [formatterPersistFn, onEndEditingPersistFn, responseValue]);
  return /*#__PURE__*/React.createElement(TextInput, _extends({}, restProps, {
    ref: ref,
    type: type,
    defaultValue: formatterPersistFn(parserNumberToString(defaultValue)),
    value: localValue,
    onChangeText: onChangeTextTextInput,
    onEndEditing: onEndEditingTextInput
  }));
});
export default /*#__PURE__*/memo(NumberInput);
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