428 lines
11 KiB
Vue
428 lines
11 KiB
Vue
<template>
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<view v-if="value" class="tn-select-class tn-select">
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<tn-popup v-model="value" mode="bottom" :popup="false" length="auto" :safeAreaInsetBottom="safeAreaInsetBottom"
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:maskCloseable="maskCloseable" :zIndex="elZIndex" @close="close">
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<view class="tn-select__content" :style="{paddingBottom:safeAreaInsetBottom?'120rpx':'0'}">
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<!-- 头部 -->
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<view class="tn-select__content__header" @touchmove.stop.prevent>
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<view class="tn-select__content__header__btn tn-select__content__header--cancel"
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:style="{ color: cancelColor }" hover-class="tn-hover-class" hover-stay-time="150"
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@tap="getResult('cancel')">{{ cancelText }}</view>
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<view class="tn-select__content__header__title">{{ title }}</view>
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<view class="tn-select__content__header__btn tn-select__content__header--confirm"
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:style="{ color: confirmColor }" hover-class="tn-hover-class" hover-stay-time="150"
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@tap="getResult('confirm')">{{ confirmText }}</view>
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</view>
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<!-- 列表内容 -->
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<view class="tn-select__content__body">
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<view v-if="searchShow && mode==='single'">
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<view class="tn-flex tn-select__content__body__search">
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<view class="tn-icon-search tn-padding-sm"></view>
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<input class="tn-select__content__body__search__input" :placeholder="searchPlaceholder"
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maxlength="255" confirm-type="search" @input="searchInput" @confirm="search">
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</view>
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</view>
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<picker-view class="tn-select__content__body__view" :value="defaultSelector" @pickstart="pickStart"
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@pickend="pickEnd" @change="columnChange">
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<picker-view-column v-for="(item, index) in columnData" :key="index">
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<view class="tn-select__content__body__item" v-for="(sub_item, sub_index) in item"
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:key="sub_index">
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<view class="tn-text-ellipsis">
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{{ sub_item[labelName] }}
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</view>
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</view>
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</picker-view-column>
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</picker-view>
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</view>
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</view>
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</tn-popup>
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</view>
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</template>
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<script>
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export default {
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name: 'tn-select',
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props: {
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value: {
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type: Boolean,
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default: false
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},
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// 列表模式
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// single 单列 multi 多列 multi-auto 多列联动
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mode: {
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type: String,
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default: 'single'
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},
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// 列数据
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list: {
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type: Array,
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default () {
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return []
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}
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},
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// value属性名
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valueName: {
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type: String,
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default: 'value'
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},
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// label属性名
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labelName: {
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type: String,
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default: 'label'
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},
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// 当mode=multi-auto时，children的属性名
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childName: {
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type: String,
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default: 'children'
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},
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// 默认值
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defaultValue: {
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type: Array,
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default () {
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return [0]
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}
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},
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// 顶部标题
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title: {
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type: String,
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default: ''
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},
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// 取消按钮文字
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cancelText: {
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type: String,
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default: '取消'
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},
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// 取消按钮文字颜色
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cancelColor: {
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type: String,
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default: ''
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},
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// 确认按钮文字
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confirmText: {
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type: String,
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default: '确认'
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},
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// 确认按钮文字颜色
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confirmColor: {
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type: String,
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default: ''
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},
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// 点击遮罩关闭
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maskCloseable: {
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type: Boolean,
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default: true
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},
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// 预留安全区域
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safeAreaInsetBottom: {
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type: Boolean,
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default: false
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},
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// zIndex
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zIndex: {
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type: Number,
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default: 0
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},
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// 是否开启模糊搜索(只在单列模式生效)
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searchShow: {
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type: Boolean,
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default: true
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},
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//搜索框placeholder
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searchPlaceholder: {
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type: String,
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default: '搜索'
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}
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},
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computed: {
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elZIndex() {
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return this.zIndex ? this.zIndex : this.$tn.zIndex.popup
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}
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},
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data() {
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return {
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// 列是否还在滑动中，微信小程序如果在滑动中就点确定，结果可能不准确
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moving: false,
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// 用户保存当前列的索引，用于判断下一次变化时改变的列
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defaultSelector: [0],
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// picker-view数据
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columnData: [],
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// 保存用户选择的结果
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selectValue: [],
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// 上一次改变时的index
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lastSelectIndex: [],
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// 列数
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columnNum: 0,
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}
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},
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watch: {
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// 在select弹起的时候，重新初始化所有数据
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value: {
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handler(val) {
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if (val) setTimeout(() => this.init(), 10)
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},
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immediate: true
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}
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},
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methods: {
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//搜索输入监听
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searchInput(e) {
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console.log(e.detail.value);
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this.searchResult(e.detail.value)
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},
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//搜索完成监听
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search(e) {
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console.log(e.detail.value)
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this.searchResult(e.detail.value)
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},
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//执行搜索方法
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searchResult(value) {
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let result = [];
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// console.log(this.list)
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let data = this.list.filter(item => item[this.labelName].indexOf(value) > -1);
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if (data.length > 0) {
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result.push(data);
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}
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// console.log(result)
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this.columnData = result;
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this.selectValue = []
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if (this.columnData.length > 0) {
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this.setSelectValue()
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}
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},
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// 标识滑动开始，只有微信小程序才有这样的事件
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pickStart() {
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// #ifdef MP-WEIXIN
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this.moving = true;
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// #endif
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},
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// 标识滑动结束
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pickEnd() {
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// #ifdef MP-WEIXIN
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this.moving = false;
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// #endif
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},
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init() {
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this.setColumnNum()
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this.setDefaultSelector()
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this.setColumnData()
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this.setSelectValue()
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},
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// 获取默认选中列下标
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setDefaultSelector() {
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// 如果没有传入默认值，生成用0填充长度为columnNum的数组
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this.defaultSelector = this.defaultValue.length === this.columnNum ? this.defaultValue : Array(this
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.columnNum).fill(0)
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this.lastSelectIndex = this.$tn.deepClone(this.defaultSelector)
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},
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// 计算列数
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setColumnNum() {
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// 单列的数量为1
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if (this.mode === 'single') this.columnNum = 1
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// 多列时取list的长度
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else if (this.mode === 'multi') this.columnNum = this.list.length
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// 多列联动时，通过遍历list的第一个元素，得出有多少列
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else if (this.mode === 'multi-auto') {
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let num = 1
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let column = this.list
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// 如果存在children属性，再次遍历
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while (column[0][this.childName]) {
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column = column[0] ? column[0][this.childName] : {},
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num++
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}
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this.columnNum = num
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}
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},
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// 获取需要展示在picker中的列数据
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setColumnData() {
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let data = []
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this.selectValue = []
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if (this.mode === 'multi-auto') {
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// 获取所有数据中的第一个元素
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let column = this.list[this.defaultSelector.length ? this.defaultSelector[0] : 0]
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// 通过循环所有列数，再根据设定列的数组，得出当前需要渲染的整个列数组
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for (let i = 0; i < this.columnNum; i++) {
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// 第一列默认为整个list数组
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if (i === 0) {
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data[i] = this.list
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column = column[this.childName]
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} else {
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// 大于第一列时，判断是否有默认选中的，如果没有就用该列的第一项
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data[i] = column
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column = column[this.defaultSelector[i]][this.childName]
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}
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}
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} else if (this.mode === 'single') {
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data[0] = this.list
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} else {
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data = this.list
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}
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this.columnData = data
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},
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// 获取默认选中的值，如果没有设置，则默认选中第一项
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setSelectValue() {
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let tmp = null
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for (let i = 0; i < this.columnNum; i++) {
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tmp = this.columnData[i][this.defaultSelector[i]]
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let data = {
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value: tmp ? tmp[this.valueName] : null,
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label: tmp ? tmp[this.labelName] : null
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}
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// 判断是否存在额外的参数
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if (tmp && tmp.extra) data.extra = tmp.extra
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this.selectValue.push(data)
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}
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// console.log("默认",this.selectValue)
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},
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// 列选项
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columnChange(event) {
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let index = null
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let columnIndex = event.detail.value
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this.selectValue = []
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if (this.mode === 'multi-auto') {
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// 对比前后两个数组，判断变更的是那一列
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this.lastSelectIndex.map((v, idx) => {
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if (v != columnIndex[idx]) index = idx
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})
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this.defaultSelector = columnIndex
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// 当前变化列的下一列的数据，需要获取上一列的数据，同时需要指定是上一列的第几个的children，再往后的
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// 默认是队列的第一个为默认选项
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for (let i = index + 1; i < this.columnNum; i++) {
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this.columnData[i] = this.columnData[i - 1][i - 1 == index ? columnIndex[index] : 0][this
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.childName
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]
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this.defaultSelector[i] = 0
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}
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// 在历遍的过程中，可能由于上一步修改this.columnData，导致产生连锁反应，程序触发columnChange，会有多次调用
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// 只有在最后一次数据稳定后的结果是正确的，此前的历遍中，可能会产生undefined，故需要判断
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columnIndex.map((item, index) => {
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let data = this.columnData[index][columnIndex[index]]
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let tmp = {
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value: data ? data[this.valueName] : null,
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label: data ? data[this.labelName] : null
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}
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if (data && data.extra !== undefined) tmp.extra = data.extra
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this.selectValue.push(tmp)
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})
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this.lastSelectIndex = columnIndex
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} else if (this.mode === 'single') {
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let data = this.columnData[0][columnIndex[0]]
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let tmp = {
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value: data ? data[this.valueName] : null,
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label: data ? data[this.labelName] : null
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}
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if (data && data.extra !== undefined) tmp.extra = data.extra
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this.selectValue.push(tmp)
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} else if (this.mode === 'multi') {
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columnIndex.map((item, index) => {
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let data = this.columnData[index][columnIndex[index]]
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let tmp = {
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value: data ? data[this.valueName] : null,
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label: data ? data[this.labelName] : null
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}
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if (data && data.extra !== undefined) tmp.extra = data.extra
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this.selectValue.push(tmp)
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})
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}
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},
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close() {
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this.$emit('input', false)
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},
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getResult(event = null) {
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// #ifdef MP-WEIXIN
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if (this.moving) return;
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// #endif
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if (event) this.$emit(event, this.selectValue)
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this.close()
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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.tn-select {
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&__content {
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position: relative;
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&__header {
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position: relative;
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display: flex;
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flex-direction: row;
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width: 100%;
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height: 90rpx;
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padding: 0 40rpx;
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align-items: center;
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justify-content: space-between;
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box-sizing: border-box;
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font-size: 30rpx;
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background-color: #FFFFFF;
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&__btn {
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padding: 16rpx;
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box-sizing: border-box;
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text-align: center;
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text-decoration: none;
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}
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&__title {
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color: $tn-font-color;
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}
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&--cancel {
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color: $tn-font-sub-color;
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}
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&--confirm {
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// color: $tn-main-color;
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background-color: #07C160;
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color: #FFFFFF;
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padding: 10rpx 25rpx;
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border-radius: 10rpx;
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}
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}
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&__body {
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width: 100%;
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height: 500rpx;
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overflow: hidden;
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background-color: #FFFFFF;
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&__search {
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z-index: 5;
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align-items: center;
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border-radius: 19px;
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background: #f8f8f8;
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width: calc(100% - 60rpx);
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margin: 0 auto;
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position: relative;
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top: 15px;
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&__input {
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width: 600rpx;
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}
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}
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&__view {
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height: 100%;
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box-sizing: border-box;
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}
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&__item {
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display: flex;
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flex-direction: row;
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align-items: center;
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justify-content: center;
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font-size: 32rpx;
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color: $tn-font-color;
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padding: 0 8rpx;
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}
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}
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}
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}
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</style> |