@jdcfe/yep-react/es/picker-view/MultiPicker.js

一套移动端的React组件库

import _extends from "@babel/runtime/helpers/extends";
import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _inherits from "@babel/runtime/helpers/inherits";
import _possibleConstructorReturn from "@babel/runtime/helpers/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/getPrototypeOf";

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

import * as React from 'react';
import classNames from 'classnames';
import noop from '../_utils/noop';

var MultiPicker = /*#__PURE__*/function (_React$PureComponent) {
  _inherits(MultiPicker, _React$PureComponent);

  var _super = _createSuper(MultiPicker);

  function MultiPicker() {
    var _this;

    _classCallCheck(this, MultiPicker);

    _this = _super.apply(this, arguments);

    _this.getValue = function () {
      var _this$props = _this.props,
          children = _this$props.children,
          selectedValue = _this$props.selectedValue;

      if (selectedValue && selectedValue.length) {
        return selectedValue;
      } else {
        if (!children) {
          return [];
        }

        return React.Children.map(children, function (c) {
          var cc = React.Children.toArray(c.children || c.props.children);
          return cc && cc[0] && cc[0].props.value;
        });
      }
    };

    _this.onChange = function (i, v, cb) {
      var value = _this.getValue().concat();

      value[i] = v;

      if (cb) {
        cb(value, i);
      }
    };

    _this.onValueChange = function (i, v) {
      _this.onChange(i, v, _this.props.onValueChange);
    };

    _this.onScrollChange = function (i, v) {
      _this.onChange(i, v, _this.props.onScrollChange);
    };

    return _this;
  }

  _createClass(MultiPicker, [{
    key: "render",
    value: function render() {
      var _this2 = this;

      var _this$props2 = this.props,
          prefixCls = _this$props2.prefixCls,
          className = _this$props2.className,
          rootNativeProps = _this$props2.rootNativeProps,
          children = _this$props2.children,
          style = _this$props2.style;
      var selectedValue = this.getValue();
      var colElements = React.Children.map(children, function (col, i) {
        return /*#__PURE__*/React.cloneElement(col, {
          selectedValue: selectedValue[i],
          onValueChange: function onValueChange() {
            for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
              args[_key] = arguments[_key];
            }

            return _this2.onValueChange.apply(_this2, [i].concat(args));
          },
          onScrollChange: _this2.onScrollChange && function () {
            for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
              args[_key2] = arguments[_key2];
            }

            return _this2.onScrollChange.apply(_this2, [i].concat(args));
          }
        });
      });
      return /*#__PURE__*/React.createElement("div", _extends({}, rootNativeProps, {
        style: style,
        className: classNames(className, prefixCls)
      }), colElements);
    }
  }]);

  return MultiPicker;
}(React.PureComponent);

MultiPicker.defaultProps = {
  prefixCls: 'Yep-multi-picker',
  style: {},
  onValueChange: noop,
  onScrollChange: noop
};
export default MultiPicker;