@fruits-chain/react-native-xiaoshu/lib/module/selector/selector.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, { useRef, useEffect, useMemo, useState, memo } from 'react';
import { View, Text, ScrollView, TouchableOpacity, useWindowDimensions } from 'react-native';
import { useSafeAreaInsets } from 'react-native-safe-area-context';
import Popup from '../popup/popup';
import PopupHeader from '../popup/header';
import Empty from '../empty';
import Button from '../button';
import CheckboxIcon from '../checkbox/icon';
import { SuccessOutLine } from '../icon';
import { useTheme, widthStyle } from '../theme';
import { getDefaultValue } from '../helpers';
import { createStyles } from './style';
/**
 * Selector 弹出层式 Select
 * @description 类似 Web 端的 Select 组件，可以多选、单选。
 */

const Selector = _ref => {
  let {
    title,
    options,
    value,
    multiple = false,
    onChange,
    onChangeImmediate,
    safeAreaInsetTop,
    // popup 组件相关属性
    visible,
    closeOnPressOverlay = true,
    onClose,
    ...restProps
  } = _ref;
  const THEME_VAR = useTheme();
  const insets = useSafeAreaInsets();
  const windowDimensions = useWindowDimensions();
  const ScrollViewRef = useRef(null);
  const [selectedKeys, setSelectedKeys] = useState(multiple ? value ? [].concat(value) : [] : value ? [value] : []);
  const STYLES = widthStyle(THEME_VAR, createStyles);
  safeAreaInsetTop = getDefaultValue(safeAreaInsetTop, insets.top);
  /** select 动态高度 */

  const selectHeight = useMemo(() => {
    /** 选项/内容高度 选项个数 + 标题高度 + 圆角边缘 + 多选按钮高度 + 底部安全距离 */
    const pickHeight = options.length * THEME_VAR.select_popup_option_text_line_height + THEME_VAR.nav_bar_height + THEME_VAR.popup_round_border_radius + (multiple ? 60 : 0) + insets.bottom;
    const maxHeight = windowDimensions.height - safeAreaInsetTop;
    return pickHeight > maxHeight ? maxHeight : pickHeight < THEME_VAR.select_popup_min_height ? THEME_VAR.select_popup_min_height : pickHeight;
  }, [THEME_VAR.nav_bar_height, THEME_VAR.popup_round_border_radius, THEME_VAR.select_popup_min_height, THEME_VAR.select_popup_option_text_line_height, insets.bottom, multiple, options.length, safeAreaInsetTop, windowDimensions.height]);
  const selectStyle = useMemo(() => {
    return {
      height: selectHeight,
      paddingBottom: insets.bottom
    };
  }, [selectHeight, insets.bottom]); // 同步已选的数据

  useEffect(() => {
    setSelectedKeys(multiple ? value ? [].concat(value) : [] : value ? [value] : []);
  }, [value, multiple]);
  /**
   * 生成每次点击的回调
   */

  const genOnPressOption = key => () => {
    if (multiple) {
      // 多选维护内部变量
      setSelectedKeys(v => {
        const other = v.filter(val => val !== key);

        if (other.length === v.length) {
          const newValues = v.concat(key);
          return onChangeImmediate ? onChangeImmediate(newValues) : newValues;
        }

        return onChangeImmediate ? onChangeImmediate(other) : other;
      });
    } else {
      const newValue = onChangeImmediate ? onChangeImmediate(key) : key; // 单选直接出发回调

      onChange(newValue, options.filter(opt => opt.value === newValue)[0]);
    }
  };
  /**
   * 点击确定按钮
   */


  const onPressOk = () => {
    onChange === null || onChange === void 0 ? void 0 : onChange(selectedKeys, options.filter(opt => selectedKeys.indexOf(opt.value) > -1));
  };

  return /*#__PURE__*/React.createElement(Popup, _extends({}, restProps, {
    visible: visible,
    onClose: onClose,
    closeOnPressOverlay: closeOnPressOverlay,
    onPressOverlay: onClose,
    position: "bottom",
    round: true
  }), /*#__PURE__*/React.createElement(View, {
    style: selectStyle
  }, /*#__PURE__*/React.createElement(PopupHeader, {
    title: title,
    onClose: onClose
  }), /*#__PURE__*/React.createElement(View, {
    style: STYLES.body
  }, /*#__PURE__*/React.createElement(ScrollView, {
    ref: ScrollViewRef,
    bounces: false
  }, options.length === 0 ? /*#__PURE__*/React.createElement(Empty, null) : null, options === null || options === void 0 ? void 0 : options.map(item => {
    const isSelected = selectedKeys.findIndex(key => key === item.value) >= 0;
    return /*#__PURE__*/React.createElement(TouchableOpacity, {
      key: item.value,
      disabled: item.disabled,
      onPress: genOnPressOption(item.value),
      activeOpacity: THEME_VAR.active_opacity
    }, /*#__PURE__*/React.createElement(View, {
      style: STYLES.option_item
    }, /*#__PURE__*/React.createElement(Text, {
      style: STYLES.option_item_text,
      numberOfLines: 1
    }, item.label), multiple ? /*#__PURE__*/React.createElement(CheckboxIcon, {
      active: isSelected,
      disabled: item.disabled,
      onPress: genOnPressOption(item.value)
    }) : isSelected ? /*#__PURE__*/React.createElement(SuccessOutLine, {
      color: THEME_VAR.primary,
      size: THEME_VAR.checkbox_icon_size
    }) : null));
  })), multiple ? /*#__PURE__*/React.createElement(View, {
    style: STYLES.btn
  }, /*#__PURE__*/React.createElement(Button, {
    type: "primary",
    onPress: onPressOk,
    text: "\u786E\u5B9A"
  })) : null)));
};

export default /*#__PURE__*/memo(Selector);
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