antd-mobile-taro-ui/2x/es/components/input/input.js

以antd-mobile为设计标准，基于taro框架的微信小程序组件库

import React, { forwardRef, useImperativeHandle, useRef } from 'react';
import { usePropsValue } from 'antd-mobile/es/utils/use-props-value';
import { RoundCloseFillIcon } from 'antd-mobile-taro-icons';
import { withNativeProps } from 'antd-mobile/es/utils/native-props';
import { mergeProps } from 'antd-mobile/es/utils/with-default-props';
import classNames from 'classnames';
import { bound } from 'antd-mobile/es/utils/bound';
import { isIOS } from 'antd-mobile/es/utils/validate';
import { View, Input as InputTaro } from '@tarojs/components';
const classPrefix = `adm-input`;
const defaultProps = {
  defaultValue: ''
};
export const Input = forwardRef((p, ref) => {
  const props = mergeProps(defaultProps, p);
  const [value, setValue] = usePropsValue(props);
  const compositionStartRef = useRef(false);
  const nativeInputRef = useRef(null);
  useImperativeHandle(ref, () => ({
    clear: () => {
      setValue('');
    },
    focus: () => {
      var _a;

      (_a = nativeInputRef.current) === null || _a === void 0 ? void 0 : _a.focus();
    },
    blur: () => {
      var _a;

      (_a = nativeInputRef.current) === null || _a === void 0 ? void 0 : _a.blur();
    },

    get nativeElement() {
      return nativeInputRef.current;
    }

  }));

  const handleKeydown = e => {
    var _a;

    (_a = props.onEnterPress) === null || _a === void 0 ? void 0 : _a.call(props, e);
  };

  function checkValue() {
    let nextValue = value;

    if (props.type === 'number') {
      nextValue = nextValue && bound(parseFloat(nextValue), props.min, props.max).toString();
    }

    if (nextValue !== value) {
      setValue(nextValue);
    }
  }

  const shouldShowClear = (() => {
    if (!props.clearable || !value || props.readOnly) return false;
    return true;
  })();

  return withNativeProps(props, React.createElement(View, {
    className: classNames(`${classPrefix}`, props.disabled && `${classPrefix}-disabled`)
  }, React.createElement(InputTaro, {
    ref: nativeInputRef,
    className: `${classPrefix}-element`,
    value: value,
    onInput: e => {
      setValue(e.detail.value);
    },
    onFocus: e => {
      var _a;

      (_a = props.onFocus) === null || _a === void 0 ? void 0 : _a.call(props, e);
    },
    onBlur: e => {
      var _a;

      checkValue();
      (_a = props.onBlur) === null || _a === void 0 ? void 0 : _a.call(props, e);
    },
    id: props.id,
    placeholder: props.placeholder,
    disabled: props.disabled || props.readOnly,
    onConfirm: handleKeydown,
    maxlength: props.maxlength,
    focus: props.focus,
    password: props.type === 'password',
    type: props.type === 'password' ? 'text' : props.type,
    name: props.name
  }), shouldShowClear && React.createElement(View, {
    className: `${classPrefix}-clear`,
    onClick: () => {
      var _a, _b;

      setValue('');
      (_a = props.onClear) === null || _a === void 0 ? void 0 : _a.call(props);

      if (isIOS() && compositionStartRef.current) {
        compositionStartRef.current = false;
        (_b = nativeInputRef.current) === null || _b === void 0 ? void 0 : _b.blur();
      }
    }
  }, React.createElement(RoundCloseFillIcon, null))));
});