Merge branch 'dev_aliyun' of https://bdgit.educoder.net/Hjqreturn/educoder into dev_aliyun
commit
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/*
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* @Description: 知识点
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* @Author: tangjiang
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* @Github:
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* @Date: 2019-12-30 13:51:19
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* @LastEditors : tangjiang
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* @LastEditTime : 2020-01-03 09:32:24
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*/
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import './index.scss';
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import React, { useState, useEffect } from 'react';
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import { Select, notification } from 'antd';
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const { Option } = Select;
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function KnowLedge (props) {
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const {
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options = [], // 下拉选项
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values = [], // 已选择的下拉项
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onChange // 获取选择的值
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} = props;
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useEffect(() => {
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const _options = [];
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const _selects = [];
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options.forEach(opt => {
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if (!values.includes(opt.id)) {
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_options.push(opt);
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} else {
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_selects.push(opt);
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}
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});
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setSelectOptions(_options || []);
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setSelectValue(_selects || []);
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}, [props]);
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// 显示的下拉项
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const [selectOptions, setSelectOptions] = useState(options);
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// 已选择的下拉项
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const [selectValue, setSelectValue] = useState([]);
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//
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const [value] = useState([]);
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// 渲染下拉选项
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const renderOptions = (options = []) => {
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return options.map((opt, i) => (
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<Option key={`opt_${i}`} value={`${opt.id}`}>{opt.name}</Option>
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));
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}
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// 过滤下拉列表项
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const handleSelectChange = (value) => {
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value = +value.join('');
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const tempArr = [...selectValue];
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const _result = selectOptions.filter(item => {
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if (item.id === value && tempArr.findIndex(t => t.id === value) === -1) {
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tempArr.push(item);
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}
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return item.id !== value;
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});
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if (tempArr.length > 50) {
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notification.warning({
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message: '提示',
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description: '知识点不能超过50个'
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});
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return;
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}
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setSelectValue(tempArr);
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setSelectOptions(_result);
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// 将选择值返回
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onChange && onChange(tempArr);
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}
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// 删除
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const handleRemoveResult = (item) => {
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// console.log('点击了删除按钮===>>>>', item);
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// 将删除的值重新加入到列表中
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const tempOptions = [...selectOptions];
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const tempValue = selectValue.filter(t => t.id !== item.id);
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// console.log(selectValue);
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tempOptions.push(item);
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setSelectOptions(tempOptions);
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setSelectValue(tempValue);
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// 将选择值返回
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onChange && onChange(tempValue);
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}
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// 渲染下拉结果
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const renderResult = (arrs) => {
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return arrs.map((item) => (
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<span className="knowledge-item" key={`item_${item.name}`}>
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{item.name}
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<span
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onClick={() => handleRemoveResult(item)}
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className="iconfont icon-roundclose knowledge-close"
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></span>
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</span>
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));
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}
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// 渲染下拉列表
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const renderSelect = (options = []) => {
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// console.log('+++++', options);
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// setSelectValue(_selects);
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return (
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<Select
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value={value}
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mode="tags"
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placeholder="请选择"
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style={{ width: '100%' }}
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onChange={handleSelectChange}
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>
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{renderOptions(options)}
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</Select>
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)
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}
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return (
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<div className="knowledge-select-area">
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{ renderSelect(selectOptions) }
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{/* 渲染下拉选择项 */}
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<div className="knowledge-result">
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{ renderResult(selectValue) }
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</div>
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</div>
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);
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}
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export default KnowLedge;
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@ -0,0 +1,42 @@
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.knowledge-select-area{
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.ant-select-selection__rendered{
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margin-bottom: 0 !important;
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}
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.ant-select-search--inline{
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margin-left: 5px;
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margin-top: 2px;
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}
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.knowledge-result{
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display: flex;
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flex-direction: row;
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flex-wrap: wrap;
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// margin-top: 15px;
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.knowledge-item{
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position: relative;
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border: 1px solid #DDDDDD;
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border-radius: 3px;
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padding: 10px;
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background: #fff;
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margin-right: 10px;
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margin-top: 10px;
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// margin-bottom: 10px;
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.knowledge-close{
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display: none;
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position: absolute;
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right: -10px;
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top: -10px;
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background-color: rgba(250,250,250,1);
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cursor: pointer;
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}
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&:hover{
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.knowledge-close{
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display: block;
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}
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}
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}
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}
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}
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