new-ruoyi-geek/ruoyi-geek-app/uni_modules/uview-plus/components/u-cascader/u-cascader.vue

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2025-11-17 15:20:25 +00:00
<template>
<up-popup :show="popupShow" mode="bottom" :popup="false"
:mask="true" :closeable="true" :safe-area-inset-bottom="true"
close-icon-color="#ffffff" :z-index="uZIndex"
:maskCloseAble="maskCloseAble" @close="close">
<view class="up-p-t-30 up-p-l-20 up-m-b-10" v-if="headerDirection =='column'">
<up-steps v-if="popupShow" dot direction="column" v-model:current="tabsIndex">
<up-steps-item v-for="(item, index) in genTabsList"
@click="tabsIndex = index" :title="item.name"></up-steps-item>
</up-steps>
</view>
<view class="up-p-t-20 up-m-b-10" v-else>
<up-tabs v-if="popupShow" :list="genTabsList"
:scrollable="true" v-model:current="tabsIndex" @change="tabsChange" ref="tabs"></up-tabs>
</view>
<view class="area-box">
<view class="u-flex" :class="{ 'change':isChange }"
:style="{transform: optionsCols == 2 && isChange ? 'translateX(-33.3333333%)' : ''}">
<template v-for="(levelData, levelIndex) in levelList" :key="levelIndex">
<view v-if="optionsCols == 2 || levelIndex == tabsIndex" class="area-item"
:style="{ width: optionsCols == 2 ? '33.33333%' : '750rpx'}">
<view class="u-padding-10 u-bg-gray" style="height: 100%;">
<scroll-view :scroll-y="true" style="height: 100%">
<up-cell-group v-if="levelIndex === 0 || selectedValueIndexs[levelIndex - 1] !== undefined">
<up-cell v-for="(item,index) in levelData"
:title="item[labelKey]" :arrow="false"
:index="index" :key="index"
@click="levelChange(levelIndex, index)">
<template v-slot:right-icon>
<up-icon v-if="selectedValueIndexs[levelIndex] === index"
size="17" name="checkbox-mark"></up-icon>
</template>
</up-cell>
</up-cell-group>
</scroll-view>
</view>
</view>
</template>
</view>
</view>
<!-- 添加按钮区域 -->
<view class="u-cascader-action up-flex up-flex-between">
<view class="u-padding-20 up-flex-fill">
<up-button @click="handleCancel" type="default">{{ t("up.common.cancel") }}</up-button>
</view>
<view class="u-padding-20 up-flex-fill">
<up-button @click="handleConfirm" type="primary">{{ t("up.common.confirm") }}</up-button>
</view>
</view>
</up-popup>
</template>
<script>
/**
* u-cascader 通用无限级联选择器
* @property {String Number} z-index 弹出时的z-index值默认1075
* @property {Boolean} mask-close-able 是否允许通过点击遮罩关闭Picker默认true
* @property {Array} data 级联数据
* @property {Array} default-value 默认选中的值
* @property {String} valueKey 指定选项的值为选项对象中的哪个属性值
* @property {String} labelKey 指定选项标签为选项对象中的哪个属性值
* @property {String} childrenKey 指定选项的子选项为选项对象中的哪个属性值
* @property {Boolean} autoClose 是否在选择最后一级时自动关闭并触发confirm默认false
*/
import { t } from '../../libs/i18n'
export default {
name: 'up-cascader',
props: {
// 通过双向绑定控制组件的弹出与收起
show: {
type: Boolean,
default: false
},
// 级联数据
data: {
type: Array,
default() {
return [];
}
},
// 默认选中的值
modelValue: {
type: Array,
default() {
return [];
}
},
// 指定选项的值为选项对象中的哪个属性值
valueKey: {
type: String,
default: 'value'
},
// 指定选项标签为选项对象中的哪个属性值
labelKey: {
type: String,
default: 'label'
},
// 指定选项的子选项为选项对象中的哪个属性值
childrenKey: {
type: String,
default: 'children'
},
// 是否允许通过点击遮罩关闭Picker
maskCloseAble: {
type: Boolean,
default: true
},
// 弹出的z-index值
zIndex: {
type: [String, Number],
default: 0
},
// 是否在选择最后一级时自动关闭并触发confirm
autoClose: {
type: Boolean,
default: false
},
// 选中项目的展示方向direction垂直方向适合文字长度过长
headerDirection: {
type: String,
default: 'row'
},
// 选项区域列数支持1列和2列默认为2列
optionsCols: {
type: [Number],
default: 2
}
},
data() {
return {
// 存储每一级的数据
levelList: [],
// 存储每一级选中的索引
selectedValueIndexs: [],
tabsIndex: 0,
popupShow: false,
// 新增confirmValues用于存储确认的值
confirmValues: []
}
},
watch: {
data: {
handler() {
this.initLevelList();
},
immediate: true
},
show() {
this.popupShow = this.show;
},
modelValue: {
handler() {
this.init();
},
immediate: true
}
},
computed: {
isChange() {
return this.tabsIndex > 1;
},
genTabsList() {
let tabsList = [{
name: "请选择"
}];
// 根据选中的值动态生成tabs
for (let i = 0; i < this.selectedValueIndexs.length; i++) {
if (this.selectedValueIndexs[i] !== undefined && this.levelList[i]) {
const selectedItem = this.levelList[i][this.selectedValueIndexs[i]];
if (selectedItem) {
tabsList[i] = {
name: selectedItem[this.labelKey]
};
// 如果还有下一级,则添加"请选择"
if (i === this.selectedValueIndexs.length - 1 &&
selectedItem[this.childrenKey] &&
selectedItem[this.childrenKey].length > 0) {
tabsList.push({
name: "请选择"
});
}
}
}
}
return tabsList;
},
uZIndex() {
// 如果用户有传递z-index值优先使用
return this.zIndex ? this.zIndex : this.$u.zIndex.popup;
}
},
// 新增confirm事件
emits: ['update:modelValue', 'change', 'confirm'],
methods: {
t,
init() {
// 初始化选中值
if (this.modelValue && this.modelValue.length > 0) {
this.setDefaultValue();
}
},
initLevelList() {
// 初始化第一级数据
if (this.data && this.data.length > 0) {
this.levelList = [this.data];
this.selectedValueIndexs = [];
}
},
setDefaultValue() {
// 根据默认值设置选中项
// 根据modelValue获取indexs给selectedValueIndexs
this.selectedValueIndexs = [];
let currentLevelData = this.data;
for (let i = 0; i < this.modelValue.length; i++) {
const value = this.modelValue[i];
const index = currentLevelData.findIndex(item => item[this.valueKey] === value);
if (index !== -1) {
this.selectedValueIndexs.push(index);
// 更新下一级的数据
if (currentLevelData[index][this.childrenKey]) {
currentLevelData = currentLevelData[index][this.childrenKey];
} else {
// 如果没有子级数据,则停止处理
break;
}
} else {
// 如果找不到匹配项,则停止处理
break;
}
}
},
close() {
this.$emit('update:show', false);
},
tabsChange(item) {
},
levelChange(levelIndex, index) {
// 设置当前级的选中值
this.$set(this.selectedValueIndexs, levelIndex, index);
// 清除后续级别的选中值
for (let i = levelIndex + 1; i < this.selectedValueIndexs.length; i++) {
this.$set(this.selectedValueIndexs, i, undefined);
}
// 获取当前选中项
const currentItem = this.levelList[levelIndex][index];
// 如果有子级数据,则初始化下一级
if (currentItem && currentItem[this.childrenKey] && currentItem[this.childrenKey].length > 0) {
// 确保levelList数组足够长
if (this.levelList.length <= levelIndex + 1) {
this.levelList.push(currentItem[this.childrenKey]);
} else {
this.$set(this.levelList, levelIndex + 1, currentItem[this.childrenKey]);
}
// 切换到下一级tab
this.tabsIndex = levelIndex + 1;
} else {
// 没有子级数据,说明是最后一级
if (this.autoClose) {
// 如果启用自动关闭则触发change事件并关闭
this.emitChange();
} else {
// 否则只触发change事件不关闭
this.emitChange(false);
}
}
},
// 修改emitChange方法增加closePopup参数
emitChange(closePopup = true) {
// 构造选中结果
const result = [];
for (let i = 0; i < this.selectedValueIndexs.length; i++) {
if (this.selectedValueIndexs[i] !== undefined && this.levelList[i]) {
result.push(this.levelList[i][this.selectedValueIndexs[i]][this.valueKey]);
}
}
// 更新confirmValues
this.confirmValues = [...result];
// 触发change事件返回value数组
this.$emit('change', this.confirmValues);
// 根据参数决定是否关闭弹窗
if (closePopup) {
this.close();
}
},
handleCancel() {
this.close();
},
handleConfirm() {
// 确认时触发confirm事件
this.$emit('update:modelValue', this.confirmValues);
this.$emit('confirm', this.confirmValues);
this.close();
}
}
}
</script>
<style lang="scss">
.area-box {
width: 100%;
overflow: hidden;
height: 800rpx;
>view {
width: 150%;
transition: transform 0.3s ease-in-out 0s;
transform: translateX(0);
&.change {
// transform: translateX(-33.3333333%);
}
}
.area-item {
// width: 750rpx;
height: 800rpx;
}
}
// 添加按钮区域样式
.u-cascader-action {
border-top: 1px solid #eee;
}
</style>