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+<template>
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+ <view class="">
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+ <view class="choose-tab" :style="{ position }">
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+ <view class="tab-list">
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+ <view
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+ class="tab"
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+ v-for="(item, index) in tabList"
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+ :class="[chooseList[index] ? 'active' : '']"
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+ :key="index"
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+ @click="handleTab(item, index)"
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+ >
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+ <view>
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+ {{ chooseList[index].cateName || item.cateName }}
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+ </view>
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+ <view>
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+ <!-- {{ active }} -->
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+ <u-icon
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+ name="arrow-down"
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+ size="12px"
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+ v-if="active !== index"
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+ ></u-icon>
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+ <u-icon
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+ v-if="active === index"
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+ name="arrow-up"
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+ size="12px"
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+ ></u-icon>
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+ </view>
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+ </view>
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+ </view>
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+ <view class="box" v-show="show">
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+ <view v-show="show" class="first">
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+ <view
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+ :class="[levelActive[0] == item.id ? 'active' : '', 'item']"
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+ v-for="(item, index) in tabList[active].child"
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+ :key="index"
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+ @click="choose(item, 1)"
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+ >
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+ {{ item.cateName }}
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+ </view>
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+ </view>
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+ <view v-show="show" v-if="level > 1" class="second">
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+ <view
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+ :class="[levelActive[1] == item.id ? 'activeL2' : '', 'item']"
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+ v-for="(item, index) in clickObj.child"
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+ :key="index"
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+ @click="choose(item, 2)"
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+ >
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+ {{ item.cateName }}
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+ </view>
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+ </view>
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+ <view v-show="show" v-if="level > 2" class="third"> </view>
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+ </view>
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+ </view>
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+ <view
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+ class="choose-modal"
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+ :style="{ background: showModal ? 'rgba(0, 0, 0, .4)' : 'none' }"
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+ v-show="show"
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+ @click="show = false"
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+ >
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+ </view>
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+ </view>
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+</template>
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+
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+<script>
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+export default {
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+ props: {
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+ position: {
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+ type: String,
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+ default: "fixed",
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+ },
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+ showModal: {
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+ type: Boolean,
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+ default: true,
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+ },
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+ tabList: {
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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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+ level: {
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+ type: Number,
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+ default: 1,
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+ },
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+ },
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+ data() {
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+ return {
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+ show: false,
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+ chooseList: ["", "", "", ""],
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+ list: [],
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+ clickObj: {},
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+ levelActive: [null, null, null],
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+ active: null,
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+ secondList: [],
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+ thirdList: [],
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+ };
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+ },
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+ methods: {
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+ handleTab(item, index) {
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+ this.active = index;
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+ this.clickObj = {};
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+ // 如果存在已经选择过的数据
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+ if (this.chooseList[index]) {
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+ for (const e of this.tabList[index].child) {
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+ // 根据ID定位到当前选择的对象
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+ if (e.child && e.child.length) {
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+ for (const i of e.child) {
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+ if (i.id == this.chooseList[index].id) {
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+ this.clickObj = e;
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+ this.levelActive[1] = i.id;
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+ }
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+ }
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+ } else {
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+ if (e.id == this.chooseList[index].id) {
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+ this.levelActive[0] = e.id;
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+ }
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+ }
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+ }
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+ }
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+
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+ this.$nextTick(() => {
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+ this.show = !this.show;
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+ });
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+ },
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+ choose(item, level) {
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+ // console.log("item", item);
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+
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+ this.levelActive[level - 1] = item.id;
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+ this.clickObj = item;
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+
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+ // 没有子级直接提交当前
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+ if (level == this.level || !item.child || !item.child.length) {
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+ this.show = false;
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+ // 重复选择则取消
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+ // console.log(
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+ // "this.chooseList",
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+ // this.chooseList,
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+ // "this.active",
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+ // this.active
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+ // );
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+ let id = this.chooseList[this.active]?.id || "";
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+ if (item.id == id) {
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+ this.chooseList[this.active] = "";
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+ this.levelActive = [null, null, null];
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+ } else {
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+ this.chooseList[this.active] = item;
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+ }
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+ this.$emit("choose", this.chooseList);
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+ }
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+ },
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+ },
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+};
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+</script>
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+
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+<style lang="scss" scoped>
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+.choose-modal {
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+ position: fixed;
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+ top: 0;
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+ left: 0;
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+ width: 100%;
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+ height: 100%;
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+ background: rgba(0, 0, 0, 0.4);
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+ z-index: 99;
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+}
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+
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+.choose-tab {
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+ // position: fixed;
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+ top: 0;
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+ left: 0;
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+ background-color: #fafafa;
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+ overflow: hidden;
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+ border-radius: 0rpx 0rpx 16rpx 16rpx;
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+ width: 100%;
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+ z-index: 100;
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+ .tab-list {
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+ display: flex;
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+ align-items: center;
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+ padding: 20rpx;
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+ background: #fff;
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+ .tab {
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+ display: flex;
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+ justify-content: center;
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+ align-items: center;
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+ background: #f0f0f0;
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+ border-radius: 8rpx 8rpx 8rpx 8rpx;
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+ height: 40rpx;
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+ line-height: 40rpx;
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+ color: #222222;
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+ font-size: 24rpx;
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+ padding: 0 10rpx;
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+ margin-right: 16rpx;
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+ }
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+ }
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+
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+ .box {
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+ background: #fff;
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+ display: flex;
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+ justify-content: start;
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+ padding: 10rpx;
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+ .item {
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+ max-height: 600rpx;
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+ font-size: 30rpx;
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+ overflow: auto;
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+ color: #222222;
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+ padding: 14rpx 24rpx;
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+ width: 100%/3;
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+ }
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+ .first {
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+ flex: 1;
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+ background-color: #ffffff;
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+ }
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+ .second {
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+ flex: 1;
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+ background-color: #f7f7f7;
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+ }
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+ .third {
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+ flex: 1;
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+ background-color: #f2f2f2;
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+ }
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+ }
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+ .active {
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+ color: $uni-color-primary !important;
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+ background-color: #f7f7f7;
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+ }
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+ .activeL2 {
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+ color: $uni-color-primary !important;
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+ background-color: #f2f2f2;
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+ }
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+ .activeL3 {
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+ color: $uni-color-primary !important;
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+ }
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+}
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+</style>
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