@fruits-chain/react-native-xiaoshu/lib/module/steps/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, { createContext, memo, useRef, useMemo } from 'react';
import { ScrollView, View } from 'react-native';
import { useTheme, widthStyle } from '../theme';
import { createStyles } from './style';
import Step from './step';
export const StepsContext = /*#__PURE__*/createContext({});
export const maxSteps = 3;

const Steps = _ref => {
  let {
    current,
    data,
    style
  } = _ref;
  const ctx = useMemo(() => ({
    current,
    data
  }), [current, data]);
  const THEME_VAR = useTheme();
  const scrollRef = useRef(null);
  const STYLES = widthStyle(THEME_VAR, createStyles);
  let inner = null;

  if ((data === null || data === void 0 ? void 0 : data.length) > 0) {
    inner = /*#__PURE__*/React.createElement(View, {
      style: [STYLES.stepsBox, style],
      onLayout: e => {
        var _e$nativeEvent, _e$nativeEvent$layout;

        setScrollDistance(e === null || e === void 0 ? void 0 : (_e$nativeEvent = e.nativeEvent) === null || _e$nativeEvent === void 0 ? void 0 : (_e$nativeEvent$layout = _e$nativeEvent.layout) === null || _e$nativeEvent$layout === void 0 ? void 0 : _e$nativeEvent$layout.width);
      }
    }, /*#__PURE__*/React.createElement(StepsContext.Provider, {
      value: ctx
    }, data === null || data === void 0 ? void 0 : data.map((v, i) => {
      return /*#__PURE__*/React.createElement(Step, _extends({
        key: i,
        index: i
      }, v));
    })));
  }

  const setScrollDistance = width => {
    if (scrollRef.current && (data === null || data === void 0 ? void 0 : data.length) > maxSteps) {
      scrollRef.current.scrollTo({
        x: width / (data === null || data === void 0 ? void 0 : data.length) * (current - 1 > 0 ? current - 1 : 0),
        y: 0
      });
    }
  };

  return /*#__PURE__*/React.createElement(View, {
    style: STYLES.outWrap
  }, (data === null || data === void 0 ? void 0 : data.length) > maxSteps ? /*#__PURE__*/React.createElement(ScrollView, {
    style: STYLES.scrollViewBox,
    horizontal: true,
    ref: scrollRef
  }, inner) : inner);
};

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