530 lines
14 KiB
JavaScript
530 lines
14 KiB
JavaScript
import { h, Component, render } from 'preact'
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import { isFunction, isArray, safety, deepMerge, mergeArr, IEVersion } from '@/common/util'
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const emptyVal = {};
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/**
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* 普通的多选渲染
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*/
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class General extends Component{
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constructor(options){
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super(options);
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this.setState({
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filterValue: '',
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remote: true,
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loading: false,
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pageIndex: 1,
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totalSize: 0,
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val: emptyVal,
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});
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this.searchCid = 0;
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this.inputOver = true;
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this.__value = '';
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this.tempData = [];
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this.size = 0;
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}
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optionClick(item, selected, disabled, e){
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this.props.ck(item, selected, disabled);
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this.focus();
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//阻止父组件上的事件冒泡
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this.blockClick(e);
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}
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groupClick(item, e){
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const { click, children, disabled } = this.props.prop;
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let m = item[click], arr = item[children].filter(opt => !opt[disabled]);
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if(m === 'SELECT'){
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this.props.onReset(arr, 'append');
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}else if(m === 'CLEAR'){
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this.props.onReset(arr, 'delete');
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}else if(m === 'AUTO'){
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this.props.onReset(arr, 'auto');
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}else if(isFunction(m)){
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m(item);
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}
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this.focus();
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//阻止父组件上的事件冒泡
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this.blockClick(e);
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}
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blockClick(e){
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e.stopPropagation();
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}
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pagePrevClick(size = this.size){
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let index = this.state.pageIndex;
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if(index <= 1){
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return ;
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}
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this.changePageIndex(index - 1);
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this.props.pageRemote && this.postData(index - 1, true);
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}
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pageNextClick(size = this.size){
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let index = this.state.pageIndex;
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if(index >= size){
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return ;
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}
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this.changePageIndex(index + 1);
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this.props.pageRemote && this.postData(index + 1, true);
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}
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changePageIndex(index){
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this.setState({
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pageIndex: index
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})
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}
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searchInput(e){
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let v = e.target.value;
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if(v === this.__value){
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return ;
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}
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clearTimeout(this.searchCid);
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if(this.inputOver){
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//保证输入框内的值是实时的
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this.__value = v;
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//让搜索变成异步的
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this.searchCid = setTimeout(() => {
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this.callback = true;
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this.setState({ filterValue: this.__value, remote: true, pageIndex: 1 })
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}, this.props.delay);
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}
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}
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focus(){
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this.searchInputRef && this.searchInputRef.focus();
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}
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blur(){
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this.searchInputRef && this.searchInputRef.blur();
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}
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handleComposition(e){
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let type = e.type;
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if(type === 'compositionstart'){
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this.inputOver = false;
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clearTimeout(this.searchCid);
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}else if(type === 'compositionend'){
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this.inputOver = true;
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this.searchInput(e);
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}
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}
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postData(pageIndex = this.state.pageIndex, mandatory = false){
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if(this.state.remote || mandatory){
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this.callback = false;
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this.setState({ loading: true, remote: false });
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//让输入框失去焦点
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this.blur();
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this.props.remoteMethod(this.state.filterValue, (result, totalSize = 1) => {
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//这里同步修改为异步
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setTimeout(() => {
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//回调后可以重新聚焦
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this.focus();
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this.callback = true;
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this.setState({ loading: false, totalSize });
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this.props.onReset(result, 'data');
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}, 10);
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}, this.props.show, pageIndex);
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}
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}
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//键盘事件
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keydown(type, e){
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let keyCode = e.keyCode;
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if(type === 'div'){
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//Esc, Tab
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if(keyCode === 27 || keyCode === 9){
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this.props.onReset(false, 'close');
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}else
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//Left
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if(keyCode === 37){
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this.pagePrevClick();
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}else
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//Right 键
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if(keyCode === 39){
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this.pageNextClick();
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}
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}
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const { value, optgroup, disabled } = this.props.prop;
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let data = this.tempData.filter(item => !item[optgroup] && !item[disabled]);
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let len = data.length - 1;
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if(len === -1){
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return ;
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}
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let index = data.findIndex(item => item[value] === this.state.val);
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//Up 键
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if(keyCode === 38){
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if(index <= 0){
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index = len
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}else if(index > 0){
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index -= 1;
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}
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let val = data[index][value];
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this.setState({ val })
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}else
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//Down 键
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if(keyCode === 40){
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if(index === -1 || index === len){
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index = 0
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}else if(index < len){
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index += 1;
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}
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let val = data[index][value];
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this.setState({ val })
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}else
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//Enter 键
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if(keyCode === 13){
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if(this.state.val != emptyVal){
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let option = data[index];
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this.optionClick(option, this.props.sels.findIndex(item => item[value] === this.state.val) != -1, option[disabled], e)
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}
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}
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}
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//组件将要接收新属性
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componentWillReceiveProps(props){
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if(this.props.show != props.show){
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if(!props.show){
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//清空输入框的值
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this.setState({ filterValue: '', val: emptyVal });
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this.__value = '';
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this.searchInputRef && (this.searchInputRef.value = '');
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}else{
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//聚焦输入框
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setTimeout(() => {
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if(props.filterable){
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this.focus()
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}else{
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this.base.focus()
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}
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}, 0);
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}
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}
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}
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render(config) {
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let { data, flatData, prop, template, theme, radio, sels, empty, filterable, filterMethod, remoteSearch, remoteMethod, delay, searchTips, create, pageRemote, max } = config
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const { name, value, disabled, children, optgroup } = prop;
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let arr = deepMerge([], flatData), creator;
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//远程分页 或者 远程搜索
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if(pageRemote || filterable && remoteSearch){
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this.postData();
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}
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//本地搜索
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if(filterable && !remoteSearch){
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const filterData = (item, index) => {
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const isGroup = item[optgroup];
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if(isGroup){
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delete item.__del;
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return true;
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}
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return filterMethod(this.state.filterValue, item, index, prop);
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}
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arr = arr.filter(filterData);
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for(let i = 0; i < arr.length - 1; i++){
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let a = arr[i];
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let b = arr[i + 1];
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if(a[optgroup] && b[optgroup]){
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arr[i].__del = true;
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}
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}
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if(arr.length && arr[arr.length - 1][optgroup]){
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arr[arr.length - 1].__del = true;
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}
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arr = arr.filter(item => !item.__del);
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//创建条目
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creator = this.state.filterValue && isFunction(create);
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}
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const search = (
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<div class={ filterable ? 'xm-search' : 'xm-search dis' }>
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<i class="xm-iconfont xm-icon-sousuo"></i>
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<input class="xm-input xm-search-input" placeholder={ searchTips } />
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</div>
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);
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//如果是分组模式, 要分页先去除分组, 然后在计算分页, 最后再加上分组
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let groupInfo = {};
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arr.filter(item => item[optgroup]).forEach(g => {
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g[children].forEach(item => groupInfo[item[value]] = g);
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});
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arr = arr.filter(item => !item[optgroup]);
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let paging = '';
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if(config.paging){
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//计算当前分页的总页码
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let size = pageRemote ? this.state.totalSize : Math.floor((arr.length - 1) / config.pageSize) + 1;
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size <= 0 && (size = 1);
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let pageIndex = this.state.pageIndex;
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//如果当前页码大于总页码, 重置一下
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if(pageIndex > size){
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pageIndex = size;
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}
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//如有总页码>1, 但是因为搜索造成的页码=0的情况
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if(size > 0 && pageIndex <= 0){
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pageIndex = 1;
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}
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if(!pageRemote){
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//实现简单的物理分页
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let start = (pageIndex - 1) * config.pageSize;
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let end = start + config.pageSize;
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arr = arr.slice(start, end);
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}
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const disabledStyle = {cursor: 'no-drop', color: '#d2d2d2'};
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let prevStyle = {}, nextStyle = {};
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pageIndex <= 1 && (prevStyle = disabledStyle);
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pageIndex == size && (nextStyle = disabledStyle);
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this.state.pageIndex !== pageIndex && this.changePageIndex(pageIndex);
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this.size = size;
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paging = (
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<div class='xm-paging'>
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<span style={ prevStyle } onClick={ this.pagePrevClick.bind(this, size) }>{ config.languageProp.paging.prev }</span>
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<span>{ this.state.pageIndex } / { size }</span>
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<span style={ nextStyle } onClick={ this.pageNextClick.bind(this, size) }>{ config.languageProp.paging.next }</span>
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</div>
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)
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}else{
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//检查是否设置了显示数量上限
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if(config.showCount > 0){
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arr = arr.slice(0, config.showCount);
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}
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}
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let newArr = [], group, tmpGroup = { __tmp: true };
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tmpGroup[optgroup] = true;
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arr.forEach(item => {
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let g = groupInfo[item[value]];
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if(group && !g){
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g = tmpGroup
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}
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if(g != group){
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group = g;
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g && newArr.push(group);
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}
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newArr.push(item);
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});
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arr = newArr;
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//查看是否创建了条目
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if(creator){
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creator = create(this.state.filterValue, deepMerge([], arr));
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creator && arr.splice(0, 0, {...creator, __node: {}});
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}
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let safetyArr = deepMerge([], arr);
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this.tempData = safetyArr;
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//工具条操作
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const toolbar = (
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<div class='xm-toolbar'>
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{ config.toolbar.list.map(tool => {
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const toolClass = 'toolbar-tag';
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const toolStyle = {};
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let info, name = config.languageProp.toolbar[tool];
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if(tool === 'ALL'){
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info = { icon: 'xm-iconfont xm-icon-quanxuan', name, method: (pageData) => {
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const { optgroup, disabled } = prop;
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const list = pageData.filter(item => !item[optgroup]).filter(item => !item[disabled])
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const disSels = sels.filter(item => item[prop.disabled]);
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let result = [];
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//单选的处理
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if(radio){
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result = disSels.length ? disSels : list.slice(0, 1)
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}else if(max > 0){
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result = disSels.length >= max ? disSels : mergeArr(list.slice(0, max - disSels.length), disSels, prop)
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}else{
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result = mergeArr(list, sels, prop)
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}
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this.props.onReset(result, 'sels');
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} };
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}else if(tool === 'CLEAR'){
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info = { icon: 'xm-iconfont xm-icon-qingkong', name, method: (pageData) => {
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this.props.onReset(sels.filter(item => item[prop.disabled]), 'sels');
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} };
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}else if(tool === 'REVERSE'){
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info = { icon: 'xm-iconfont xm-icon-fanxuan', name, method: (pageData) => {
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const { optgroup, disabled } = prop;
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const list = pageData.filter(item => !item[optgroup]).filter(item => !item[disabled])
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let selectedList = [];
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sels.forEach(item => {
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let index = list.findIndex(pageItem => pageItem[value] === item[value]);
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if(index == -1){
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selectedList.push(item);
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}else{
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list.splice(index, 1);
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}
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})
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const disSels = selectedList.filter(item => item[prop.disabled]);
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let result = [];
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//单选的处理
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if(radio){
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result = disSels.length ? disSels : list.slice(0, 1)
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}else if(max > 0){
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result = disSels.length >= max ? disSels : mergeArr(list.slice(0, max - disSels.length), disSels, prop)
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}else{
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result = mergeArr(list, selectedList, prop)
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}
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this.props.onReset(result, 'sels');
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} };
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}else {
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info = tool
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}
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const hoverChange = e => {
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if(e.type === 'mouseenter') e.target.style.color = theme.color;
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if(e.type === 'mouseleave') e.target.style.color = '';
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}
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return (<div class={ toolClass } style={ toolStyle } onClick={ () => {
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isFunction(info.method) && info.method(safetyArr)
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this.focus()
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} } onMouseEnter={ hoverChange } onMouseLeave={ hoverChange }>
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{ config.toolbar.showIcon && <i class={ info.icon }></i> }
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<span>{ info.name }</span>
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</div>)
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}).filter(a => a) }
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</div>
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)
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const showIcon = config.model.icon != 'hidden';
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const renderItem = item => {
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const selected = !!sels.find(sel => sel[value] == item[value])
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const iconStyle = selected ? {
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color: theme.color,
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border: 'none'
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} : {
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borderColor: theme.color,
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};
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const itemStyle = {}
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//处理键盘的选择背景色
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if(item[value] === this.state.val){
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itemStyle.backgroundColor = theme.hover
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}
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//不显示图标时候的背景色处理
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if(!showIcon && selected){
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itemStyle.backgroundColor = theme.color;
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item[disabled] && (itemStyle.backgroundColor = '#C2C2C2');
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}
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const className = ['xm-option', (item[disabled] ? ' disabled' : ''), (selected ? ' selected' : ''), (showIcon ? 'show-icon' : 'hide-icon') ].join(' ');
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const iconClass = ['xm-option-icon xm-iconfont', radio ? 'xm-icon-danx' : 'xm-icon-duox'].join(' ');
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//处理鼠标选择的背景色
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const hoverChange = e => {
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if(e.type === 'mouseenter'){
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if(!item[disabled]){
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this.setState({ val: item[value] })
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}
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}
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}
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return (
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<div class={ className } style={ itemStyle } value={ item[value] } onClick={
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this.optionClick.bind(this, item, selected, item[disabled])
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} onMouseEnter={ hoverChange } onMouseLeave={ hoverChange }>
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{ showIcon && <i class={ iconClass } style={ iconStyle }></i> }
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<div class='xm-option-content' dangerouslySetInnerHTML={{ __html: template({ data, item, arr: sels, name: item[name], value: item[value] }) }}></div>
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</div>
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)
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}
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const renderGroup = item => {
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const isGroup = item[optgroup];
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if(isGroup){//分组模式
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if(item.__tmp){
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return <div class="item--divided"></div>
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}
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return (
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<div class="xm-group">
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<div class="xm-group-item" onClick={ this.groupClick.bind(this, item) }>{ item[name] }</div>
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</div>
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)
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}
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return renderItem(item);
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}
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arr = arr.map(renderGroup);
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if(!arr.length){
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//查看无数据情况下是否显示分页
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!config.pageEmptyShow && (paging = '');
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arr.push(<div class="xm-select-empty">{ empty }</div>)
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}
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return (
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<div onClick={ this.blockClick } tabindex="1" style="outline: none;">
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<div>
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{ config.toolbar.show && toolbar }
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{ search }
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<div class="scroll-body" style={ {maxHeight: config.height} }>{ arr }</div>
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{ config.paging && paging }
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</div>
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{ this.state.loading && <div class="loading" >
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<span class="loader"></span>
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</div> }
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</div>
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)
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}
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//组件完成挂载
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componentDidMount(){
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let input = this.base.querySelector('.xm-search-input');
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if(input){
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input.addEventListener('compositionstart', this.handleComposition.bind(this));
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input.addEventListener('compositionupdate', this.handleComposition.bind(this));
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input.addEventListener('compositionend', this.handleComposition.bind(this));
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input.addEventListener('input', this.searchInput.bind(this));
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this.searchInputRef = input;
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}
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this.base.addEventListener('keydown', this.keydown.bind(this, 'div'));
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}
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//此时页面又被重新渲染了
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componentDidUpdate(){
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if(this.callback){
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this.callback = false;
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let done = this.props.filterDone;
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if(isFunction(done)){
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done(this.state.filterValue, this.tempData || []);
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}
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}
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}
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}
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export default General;
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