<template>
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<u-popup :show="modelValue" mode="bottom" :popup="false" :mask="true" :closeable="true"
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:safe-area-inset-bottom="true" close-icon-color="#ffffff" :z-index="uZIndex" :maskCloseAble="maskCloseAble"
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@close="close">
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<u-tabs v-if="modelValue" :list="genTabsList" :scrollable="true" :current="tabsIndex" @change="tabsChange"
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ref="tabs" />
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<view class="area-box">
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<view class="u-flex" :class="{ 'change': isChange }">
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<view class="area-item">
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<view class="u-padding-10 u-bg-gray" style="height: 100%;">
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<scroll-view :scroll-y="true" style="height: 100%">
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<u-cell-group>
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<u-cell v-for="(item, index) in provinces" :title="item.label" :arrow="false"
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:index="index" :key="index" @click="provinceChange(index)">
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<template v-slot:right-icon>
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<u-icon v-if="isChooseP && province === index" size="17"
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name="checkbox-mark"></u-icon>
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</template>
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</u-cell>
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</u-cell-group>
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</scroll-view>
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</view>
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</view>
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<view class="area-item">
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<view class="u-padding-10 u-bg-gray" style="height: 100%;">
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<scroll-view :scroll-y="true" style="height: 100%">
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<u-cell-group v-if="isChooseP">
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<u-cell v-for="(item, index) in citys" :title="item.label" :arrow="false" :index="index"
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:key="index" @click="cityChange(index)">
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<template v-slot:right-icon>
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<u-icon v-if="isChooseC && city === index" size="17"
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name="checkbox-mark"></u-icon>
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</template>
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</u-cell>
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</u-cell-group>
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</scroll-view>
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</view>
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</view>
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<view class="area-item">
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<view class="u-padding-10 u-bg-gray" style="height: 100%;">
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<scroll-view :scroll-y="true" style="height: 100%">
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<u-cell-group v-if="isChooseC">
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<u-cell v-for="(item, index) in areas" :title="item.label" :arrow="false" :index="index"
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:key="index" @click="areaChange(index)">
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<template v-slot:right-icon>
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<u-icon v-if="isChooseA && area === index" size="17"
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name="checkbox-mark"></u-icon>
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</template>
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</u-cell>
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</u-cell-group>
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</scroll-view>
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</view>
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</view>
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</view>
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</view>
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</u-popup>
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</template>
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<script setup lang="ts">
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import { ref, computed, onMounted, PropType } from 'vue';
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import provincesSource from "./province.js";
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import citysSource from "./city.js";
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import areasSource from "./area.js";
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// 定义接口
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interface Region {
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label: string;
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value: string;
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}
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interface CitySelectResult {
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province: Region;
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city: Region;
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area: Region;
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}
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interface TabItem {
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name: string;
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}
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// Props 定义
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const props = defineProps({
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// 通过双向绑定控制组件的弹出与收起
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modelValue: {
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type: Boolean,
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default: false
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},
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// 默认显示的地区，可传类似["河北省", "秦皇岛市", "北戴河区"]
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defaultRegion: {
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type: Array as PropType<string[]>,
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default: () => []
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},
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// 默认显示地区的编码，defaultRegion和areaCode同时存在，areaCode优先，可传类似["13", "1303", "130304"]
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areaCode: {
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type: Array as PropType<string[]>,
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default: () => []
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},
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// 是否允许通过点击遮罩关闭Picker
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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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// 弹出的z-index值
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zIndex: {
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type: [String, Number],
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default: 0
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}
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});
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// 事件定义
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const emit = defineEmits<{
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(e: 'update:modelValue', value: boolean): void;
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(e: 'close'): void;
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(e: 'city-change', result: CitySelectResult): void;
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}>();
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const cityValue = ref("");
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const isChooseP = ref(false); // 是否已经选择了省
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const province = ref(0); // 省级下标
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const provinces = ref<Region[]>(provincesSource);
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const isChooseC = ref(false); // 是否已经选择了市
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const city = ref(0); // 市级下标
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const citys = ref<Region[]>(citysSource[0]);
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const isChooseA = ref(false); // 是否已经选择了区
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const area = ref(0); // 区级下标
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const areas = ref<Region[]>(areasSource[0][0]);
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const tabsIndex = ref(0);
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const tabs = ref();
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// 计算属性
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const isChange = computed(() => {
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return tabsIndex.value > 1;
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});
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const genTabsList = computed((): TabItem[] => {
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let tabsList: TabItem[] = [{
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name: "请选择"
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}];
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if (isChooseP.value) {
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tabsList[0].name = provinces.value[province.value].label;
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tabsList[1] = {
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name: "请选择"
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};
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}
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if (isChooseC.value) {
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tabsList[1].name = citys.value[city.value].label;
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tabsList[2] = {
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name: "请选择"
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};
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}
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if (isChooseA.value) {
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tabsList[2].name = areas.value[area.value].label;
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}
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return tabsList;
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});
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const uZIndex = computed(() => {
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// 如果用户有传递z-index值，优先使用
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return props.zIndex ? props.zIndex : 1075; // 假设$u.zIndex.popup为1075
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});
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// 方法
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const setProvince = (label = "", value = "") => {
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provinces.value.map((v, k) => {
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if (value ? v.value == value : v.label == label) {
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provinceChange(k);
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}
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});
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};
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const setCity = (label = "", value = "") => {
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citys.value.map((v, k) => {
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if (value ? v.value == value : v.label == label) {
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cityChange(k);
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}
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});
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};
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const setArea = (label = "", value = "") => {
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areas.value.map((v, k) => {
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if (value ? v.value == value : v.label == label) {
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isChooseA.value = true;
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area.value = k;
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}
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});
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};
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const close = () => {
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emit('update:modelValue', false);
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emit('close');
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};
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const tabsChange = (value: { index: number }) => {
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tabsIndex.value = value.index;
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};
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const provinceChange = (index: number) => {
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isChooseP.value = true;
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isChooseC.value = false;
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isChooseA.value = false;
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province.value = index;
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citys.value = citysSource[index];
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tabsIndex.value = 1;
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};
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const cityChange = (index: number) => {
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isChooseC.value = true;
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isChooseA.value = false;
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city.value = index;
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areas.value = areasSource[province.value][index];
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tabsIndex.value = 2;
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};
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const areaChange = (index: number) => {
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isChooseA.value = true;
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area.value = index;
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const result: CitySelectResult = {
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province: provinces.value[province.value],
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city: citys.value[city.value],
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area: areas.value[area.value]
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};
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emit('city-change', result);
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close();
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};
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// 生命周期钩子
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onMounted(() => {
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if (props.areaCode.length == 3) {
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setProvince("", props.areaCode[0]);
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setCity("", props.areaCode[1]);
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setArea("", props.areaCode[2]);
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} else if (props.defaultRegion.length == 3) {
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setProvince(props.defaultRegion[0], "");
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setCity(props.defaultRegion[1], "");
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setArea(props.defaultRegion[2], "");
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}
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});
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</script>
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<style lang="scss">
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.area-box {
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width: 100%;
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overflow: hidden;
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height: 800rpx;
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>view {
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width: 150%;
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transition: transform 0.3s ease-in-out 0s;
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transform: translateX(0);
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&.change {
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transform: translateX(-33.3333333%);
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}
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}
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.area-item {
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width: 33.3333333%;
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height: 800rpx;
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}
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}
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</style>
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