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react实现设置答题器选项个数

一，设置答题器选项
import React, { useState, useEffect } from 'react'

import PropTypes from 'prop-types'

import _ from 'lodash'

import CloseButtonSmall from '../CloseButtonSmall'

import LargeButton from '../LargeButton'

import CancelButton from '../CancelButton'

import OptionSettings from '../OptionSettings'

import './index.less'

/**

 * 答题设置组件

 *

 * @param {*} props

 * @returns

 */

function AnswererSettings(props) {

  const { style, onConfirm, onClose } = props

  const wrapperStyle = _.assign({}, style)

  const [selectedCount, setSelectedCount] = useState(2)

  const [isShowLimitTip, setIsShowLimitTip] = useState(false)

  const minOptionCount = 2

  useEffect(() => {

    const tipTimeout = setTimeout(() => {

      setIsShowLimitTip(false)

    }, 3000)

    return () => {

      clearTimeout(tipTimeout)

    }

  }, [isShowLimitTip])

  const handleSelectOption = (optionCount) => {

    setSelectedCount(optionCount)

  }

  const handleSelectMinOption = (optionCount) => {

    setIsShowLimitTip(true)

    setSelectedCount(optionCount)

  }

  const handleConfirm = () => {

    onConfirm(selectedCount)

    onClose()

  }

  const handleCancel = () => {

    onClose()

  }

  return (

    <div className="answerer-settings-component-wrap" style={wrapperStyle}>

      <div className="header">

        <div className="title-wrap">

          <div className="title-tip">

            <span className="title-icon" />

            <div className="title-contents">

              <p className="title">答题器</p>

              <p className="sub-title">设置选项让学生实时参与答题</p>

            </div>

          </div>

          <CloseButtonSmall onClick={handleCancel} />

        </div>

      </div>

      <div className="body">

        <div className="title-wrap">

          <span className="options-icon" />

          <div className="title-contents">

            <p className="title">设定选项</p>

          </div>

          { isShowLimitTip

            ? (

              <div className="title-tip">

                <span className="tip-icon" />

                <span className="tip-contents">请至少保留两个选择选项</span>

                <CloseButtonSmall

                  style={{

                    marginLeft: '20px',

                  }}

                  onClick={() => {

                    setIsShowLimitTip(false)

                  }}

                />

              </div>

            )

            : ''}

        </div>

        <OptionSettings

          style={{

            marginTop: '6px',

            marginRight: '23px',

          }}

          onSelectOption={handleSelectOption}

          onSelectMinOption={handleSelectMinOption}

          minOptionCount={minOptionCount}

        />

      </div>

      <div className="footer">

        <div className="answerer-btns-wrap">

          <LargeButton

            text="确 定"

            className="btn-confirm"

            onClick={handleConfirm}

            style={{

              marginLeft: '29px',

            }}

          />

          <CancelButton

            text="取 消"

            className="btn-cancel"

            onClick={handleCancel}

            style={{

              marginLeft: '37px',

            }}

          />

        </div>

      </div>

    </div>

  )

}

AnswererSettings.propTypes = {

  style: PropTypes.object,

  onConfirm: PropTypes.func.isRequired,

  onClose: PropTypes.func,

}

AnswererSettings.defaultProps = {

  style: {},

  onClose: _.noop,

}

export default AnswererSettings
import React, { useState, useRef } from 'react'

import PropTypes from 'prop-types'

import CX from 'classnames'

import _ from 'lodash'

import './index.less'

const optionItemImgs = [

  require('~/shared/assets/image/answerer-option-letter-a.svg'),

  require('~/shared/assets/image/answerer-option-letter-b.svg'),

  require('~/shared/assets/image/answerer-option-letter-c.svg'),

  require('~/shared/assets/image/answerer-option-letter-d.svg'),

  require('~/shared/assets/image/answerer-option-letter-e.svg'),

//   require('~/shared/assets/image/answerer-option-letter-f.svg'),

]

/**

 * 选项设置组件

 *

 * @param {*} props

 * @returns

 */

function OptionSettings(props) {

  const {

    style, onSelectOption, onSelectMinOption, minOptionCount,

  } = props

  const wrapperStyle = _.assign({}, style)

  const [selectedCount, setSelectedCount] = useState(2)

  const options = useRef(null)

  const handleClickItem = (e) => {

    const { target } = e

    if (target.classList.contains('last-selected')) {

      if (selectedCount !== minOptionCount) {

        setSelectedCount(selectedCount - 1)

        onSelectOption(selectedCount - 1)

      } else {

        onSelectMinOption(selectedCount)

      }

    } else if (target.classList.contains('first-non-selected')) {

      setSelectedCount(selectedCount + 1)

      onSelectOption(selectedCount + 1)

    }

  }

  const renderOptionItems = () => {

    return optionItemImgs.map((img, index) => {

      return (

        <div

          className={CX({

            item: true,

            selected: index < selectedCount,

            'last-selected': index === selectedCount - 1,

            'first-non-selected': index === selectedCount,

          })}

          key={img}

        >

          <img className="letter" alt="" src={img} />

          <img className="add" alt="" />

          <span className="tip" />

        </div>

      )

    })

  }

  return (

    <div className="option-settings-component-wrap" style={wrapperStyle}>

      <div className="option-items" onClick={handleClickItem} role="button" tabIndex={0} ref={options}>

        {renderOptionItems()}

      </div>

    </div>

  )

}

OptionSettings.propTypes = {

  style: PropTypes.object,

  onSelectOption: PropTypes.func,

  onSelectMinOption: PropTypes.func,

  minOptionCount: PropTypes.number,

}

OptionSettings.defaultProps = {

  style: {},

  onSelectOption: _.noop,

  onSelectMinOption: _.noop,

  minOptionCount: 2,

}

export default OptionSettings

效果如下：

react实现设置答题器选项个数-LMLPHP

二，展示答题器状态

import React, { useState } from 'react'

import PropTypes from 'prop-types'

import _ from 'lodash'

import CX from 'classnames'

import CloseButtonSmall from '../CloseButtonSmall'

import AnswererStatItem from '../AnswererStatItem'

import './index.less'

// 默认支持5个选项，名称、背景样式和进度条样式

const itemsOption = [

  {

    itemName: 'A',

    iconStyle: { backgroundImage: 'linear-gradient(135deg, #ff758c, #ffb867)' },

    processStyle: { backgroundImage: 'linear-gradient(273deg, #ff758c, #ffb867)' },

  },

  {

    itemName: 'B',

    iconStyle: { backgroundImage: 'linear-gradient(135deg, #ffb867, #fdde74)' },

    processStyle: { backgroundImage: 'linear-gradient(273deg, #ffb867, #fdde74)' },

  },

  {

    itemName: 'C',

    iconStyle: { backgroundImage: 'linear-gradient(135deg, #4cf27d, #6affcc)' },

    processStyle: { backgroundImage: 'linear-gradient(273deg, #4cf27d, #6affcc)' },

  },

  {

    itemName: 'D',

    iconStyle: { backgroundImage: 'linear-gradient(135deg, #63e4e4, #8affff)' },

    processStyle: { backgroundImage: 'linear-gradient(273deg, #63e4e4, #8affff)' },

  },

  {

    itemName: 'E',

    iconStyle: { backgroundImage: 'linear-gradient(135deg, #3977f6, #81d5fa)' },

    processStyle: { backgroundImage: 'linear-gradient(273deg, #3977f6, #81d5fa)' },

  },

]

/**

 * 答题结果展示组件

 * @param {onRestart} 重新开始

 * @param {onClose} 关闭

 * @param {itemNum} 选项的个数

 * @param {statData} 对象，{选项：次数}

 * @param {userCount} 投票人数

 */

function AnswererStat(props) {

  const {

    style, onRestart, onClose, itemNum, statData, userCount,

  } = props

  const wrapperStyle = _.assign({}, style)

  const [isRestarting, setIsRestarting] = useState(false)

  const renderItems = () => {

    return itemsOption.slice(0, itemNum).map((option, index) => {

      return (

        <AnswererStatItem

          style={{

            marginBottom: '12px',

          }}

          key={option.itemName}

          maxValue={userCount}

          value={statData[index]}

          {...option}

        />

      )

    })

  }

  return (

    <div className="answerer-stat-wrap" style={wrapperStyle}>

      <div className="operation">

        <div

          className="restart"

          role="button"

          onClick={() => {

            setIsRestarting(!isRestarting)

            onRestart()

          }}

          tabIndex={0}

        >

          <img

            className={CX({

              'restart-icon': true,

              active: isRestarting,

            })}

            src={require('~/shared/assets/image/loading-icon-circle-50-50.svg')}

            alt=""

          />

          <span className="restart-name">重新答题</span>

        </div>

        <CloseButtonSmall

          theme="dark"

          style={{

            backgroundColor: 'rgba(54, 65, 82, 0.4)',

            boxShadow: '0 2px 4px 0 rgba(51, 51, 51, 0.2)',

          }}

          onClick={onClose}

        />

      </div>

      <div className="item-area">

        {renderItems()}

      </div>

    </div>

  )

}

AnswererStat.propTypes = {

  style: PropTypes.object,

  itemNum: PropTypes.number.isRequired,

  userCount: PropTypes.number,

  statData: PropTypes.object.isRequired,

  onRestart: PropTypes.func,

  onClose: PropTypes.func,

}

AnswererStat.defaultProps = {

  style: {},

  onClose: _.noop,

  onRestart: _.noop,

  userCount: 1,

}

export default AnswererStat
import React from 'react'

import PropTypes from 'prop-types'

import _ from 'lodash'

import './index.less'

/**

 * 答题选项组件

 *

 * @param {选项的名称} itemName

 * @param {名称所在区域的样式} iconStyle

 * @param {进度条的样式} processStyle

 * @param {当前值} value

 * @param {最大值} maxValue

 * @returns

 */

function AnswererStatItem(props) {

  const {

    style, itemName, iconStyle, processStyle, value, maxValue,

  } = props

  const wrapperStyle = _.assign({}, style)

  const wrapperIconStyle = _.assign({}, iconStyle)

  let dataPercentage // 数据计算出来的百分比

  if (maxValue === 0) {

    dataPercentage = 0

  } else {

    dataPercentage = value / maxValue

  }

  const textPercentage = Math.round(dataPercentage * 100) // 在进度条展示的百分比文本

  // 计算进度条样式相关的百分比

  // 根据可见长度的百分比换算符合可见长度比例的全部长度

  // 例，10%的区域被遮挡，此时若数据是50%，则需要填充整体宽度为 10%+50%*90%=55%

  const computeProcessBarOffset = () => {

    if (dataPercentage === 0) {

      return 0

    }

    const visibleLength = 0.9

    return ((dataPercentage * visibleLength + 1 - visibleLength) * 100).toFixed()

  }

  const wrapProcessStyle = _.assign({}, processStyle, { right: `${100 - computeProcessBarOffset()}%` })

  return (

    <div className="answerer-stat-item-wrap" style={wrapperStyle}>

      <div className="answerer-stat-item">

        <div className="stat-item-icon" style={wrapperIconStyle}>

          <div className="item-name-wrap">

            {itemName}

          </div>

        </div>

        <div className="stat-item-present">

          <div className="stat-item-percentage">

            <div className="filler" style={wrapProcessStyle} />

            <div className="stat-item-data">

              <span className="percentage">

                {`${textPercentage}%`}

              </span>

              { ' / ' }

              <span className="numbers">

                {`${value} 次`}

              </span>

            </div>

          </div>

        </div>

      </div>

    </div>

  )

}

AnswererStatItem.propTypes = {

  style: PropTypes.object,

  iconStyle: PropTypes.object,

  processStyle: PropTypes.object,

  itemName: PropTypes.string.isRequired,

  value: PropTypes.number,

  maxValue: PropTypes.number,

}

AnswererStatItem.defaultProps = {

  style: {},

  iconStyle: {},

  processStyle: {},

  value: 0,

  maxValue: 0,

}

export default AnswererStatItem

效果如下：

react实现设置答题器选项个数-LMLPHP

05-21 11:11
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