guozhi-wechat/components/tui-cascade-selection/tui-cascade-selection.vue

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2025-07-22 18:31:50 +08:00
<template>
<view class="tui-cascade-selection">
<scroll-view scroll-x scroll-with-animation :scroll-into-view="scrollViewId"
:style="{ backgroundColor: headerBgColor }" class="tui-bottom-line"
:class="{ 'tui-btm-none': !headerLine }">
<view class="tui-selection-header" :style="{ height: tabsHeight, backgroundColor: backgroundColor }">
<view class="tui-header-item" :class="{ 'tui-font-bold': idx === currentTab && bold }"
:style="{ color: idx === currentTab ? activeColor : color, fontSize: size + 'rpx' }"
:id="`id_${idx}`" @tap.stop="swichNav" :data-current="idx" v-for="(item, idx) in selectedArr"
:key="idx">
{{ item.text }}
<view class="tui-active-line" :style="{ backgroundColor: lineColor }"
v-if="idx === currentTab && showLine"></view>
</view>
</view>
</scroll-view>
<swiper class="tui-selection-list" :current="currentTab" duration="300" @change="switchTab"
:style="{ height: height, backgroundColor: backgroundColor }">
<swiper-item v-for="(item, index) in selectedArr" :key="index">
<scroll-view scroll-y :scroll-into-view="item.scrollViewId" class="tui-selection-item"
:style="{ height: height }">
<view class="tui-first-item" :style="{ height: firstItemTop }"></view>
<view class="tui-selection-cell" :style="{ padding: padding, backgroundColor: backgroundColor }"
:id="`id_${subIndex}`" v-for="(subItem, subIndex) in item.list" :key="subIndex"
@tap="change(index, subIndex, subItem)">
<icon type="success_no_circle" v-if="item.index === subIndex" :color="checkMarkColor"
:size="checkMarkSize" class="tui-icon-success"></icon>
<image :src="subItem.src" v-if="subItem.src" class="tui-cell-img"
:style="{ width: imgWidth, height: imgHeight, borderRadius: radius }"></image>
<view class="tui-cell-title"
:class="{ 'tui-font-bold': item.index === subIndex && textBold, 'tui-flex-shrink': nowrap }"
:style="{ color: item.index === subIndex ? textActiveColor : textColor, fontSize: textSize + 'rpx' }">
{{ subItem.text }}
</view>
<view class="tui-cell-sub_title" :style="{ color: subTextColor, fontSize: subTextSize + 'rpx' }"
v-if="subItem.subText">{{ subItem.subText }}</view>
</view>
</scroll-view>
</swiper-item>
</swiper>
</view>
</template>
<script>
export default {
name: 'tuiCascadeSelection',
emits: ['change', 'complete'],
props: {
/**
* 如果下一级是请求返回则为第一级数据否则所有数据
* 数据格式
[{
src: "",
text: "",
subText: "",
value: 0,
children:[{
text: "",
subText: "",
value: 0,
children:[]
}]
}]
* */
itemList: {
type: Array,
default: () => {
return [];
}
},
/*
初始化默认选中数据
[{
text: "",//选中text
subText: '',//选中subText
value: '',//选中value
src: '', //选中src没有则传空或不传
index: 0, //选中数据在当前layer索引
list: [{src: "", text: "", subText: "", value: 101}] //当前layer下所有数据集合
}];
*/
defaultItemList: {
type: Array,
value: []
},
defaultKey: {
type: String,
default: 'text'
},
//是否显示header底部细线
headerLine: {
type: Boolean,
default: true
},
//header背景颜色
headerBgColor: {
type: String,
default: '#FFFFFF'
},
//顶部标签栏高度
tabsHeight: {
type: String,
default: '88rpx'
},
//默认显示文字
text: {
type: String,
default: '请选择'
},
//tabs 文字大小
size: {
type: Number,
default: 28
},
//tabs 文字颜色
color: {
type: String,
default: '#555'
},
//选中颜色
activeColor: {
type: String,
default: '#1A73E8'
},
//选中后文字加粗
bold: {
type: Boolean,
default: true
},
//选中后是否显示底部线条
showLine: {
type: Boolean,
default: true
},
//线条颜色
lineColor: {
type: String,
default: '#1A73E8'
},
//icon 大小
checkMarkSize: {
type: Number,
default: 15
},
//icon 颜色
checkMarkColor: {
type: String,
default: '#1A73E8'
},
//item 图片宽度
imgWidth: {
type: String,
default: '40rpx'
},
//item 图片高度
imgHeight: {
type: String,
default: '40rpx'
},
//图片圆角
radius: {
type: String,
default: '50%'
},
//item text颜色
textColor: {
type: String,
default: '#333'
},
textActiveColor: {
type: String,
default: '#333'
},
//选中后字体是否加粗
textBold: {
type: Boolean,
default: true
},
//item text字体大小
textSize: {
type: Number,
default: 28
},
//text 是否不换行
nowrap: {
type: Boolean,
default: false
},
//item subText颜色
subTextColor: {
type: String,
default: '#999'
},
//item subText字体大小
subTextSize: {
type: Number,
default: 24
},
// item padding
padding: {
type: String,
default: '20rpx 30rpx'
},
//占位高度,第一条数据距离顶部距离
firstItemTop: {
type: String,
default: '20rpx'
},
//swiper 高度
height: {
type: String,
default: '300px'
},
//item swiper 内容部分背景颜色
backgroundColor: {
type: String,
default: '#FFFFFF'
},
//子集数据是否请求返回默认false一次性返回所有数据
request: {
type: Boolean,
default: false
},
//子级数据当有改变时默认当前选中项新增子级数据request=true时生效
receiveData: {
type: Array,
default: () => {
return [];
}
},
//改变值则重置数据
reset: {
type: [Number, String],
default: 0
}
},
watch: {
itemList(val) {
this.initData(val, -1);
},
receiveData(val) {
this.subLevelData(val, this.currentTab);
},
reset() {
this.initData(this.itemList, -1);
},
defaultItemList(val) {
this.setDefaultData(val)
}
},
created() {
this.setDefaultData(this.defaultItemList)
},
data() {
return {
currentTab: 0,
//tab栏scrollview滚动的位置
scrollViewId: 'id__1',
selectedArr: []
};
},
methods: {
setDefaultData(val) {
let defaultItemList = val || [];
if (defaultItemList.length > 0) {
if ((typeof defaultItemList[0] === 'string' || typeof defaultItemList[0] === 'number') && !this
.request) {
let subi = -1
let selectedArr = []
for (let j = 0, len = defaultItemList.length; j < len; j++) {
let item = defaultItemList[j]
let list = []
let obj = {}
if (j === 0) {
list = this.getItemList(-1)
} else {
list = this.getItemList(j - 1, subi,selectedArr)
}
subi = this.getDefaultIndex(list, item)
if (subi !== -1) {
obj = list[subi]
selectedArr.push({
text: obj.text || this.text,
value: obj.value || '',
src: obj.src || '',
subText: obj.subText || '',
index: subi,
scrollViewId: `id_${subi}`,
list: list
})
}
if (subi === -1) break;
}
this.selectedArr = selectedArr;
this.currentTab = selectedArr.length - 1;
this.$nextTick(() => {
this.checkCor();
});
} else {
defaultItemList.map(item => {
item.scrollViewId = `id_${item.index}`;
});
this.selectedArr = defaultItemList;
this.currentTab = defaultItemList.length - 1;
this.$nextTick(() => {
this.checkCor();
});
}
} else {
this.initData(this.itemList, -1);
}
},
getDefaultIndex(arr, val) {
if (!arr || arr.length === 0 || val === undefined) return -1;
let index = -1;
let key = this.defaultKey || 'text'
for (let i = 0, len = arr.length; i < len; i++) {
if (arr[i][key] == val) {
index = i;
break;
}
}
return index;
},
initData(data, layer) {
if (!data || data.length === 0) return;
if (this.request) {
//第一级数据
this.subLevelData(data, layer);
} else {
let selectedValue = this.selectedValue || {};
if (selectedValue.type) {
this.setDefaultData(selectedValue);
} else {
this.subLevelData(this.getItemList(layer, -1), layer);
}
}
},
removeChildren(data) {
let list = data.map(item => {
delete item['children'];
return item;
});
return list;
},
getItemList(layer, index, selectedArr) {
let list = [];
let arr = JSON.parse(JSON.stringify(this.itemList));
selectedArr = selectedArr || this.selectedArr
if (layer == -1) {
list = this.removeChildren(arr);
} else {
let value = selectedArr[0].index;
value = value == -1 ? index : value;
list = arr[value].children || [];
if (layer > 0) {
for (let i = 1; i < layer + 1; i++) {
let val = layer === i ? index : selectedArr[i].index;
list = list[val].children || [];
if (list.length === 0) break;
}
}
list = this.removeChildren(list);
}
return list;
},
//滚动切换
switchTab: function(e) {
this.currentTab = e.detail.current;
this.checkCor();
},
//点击标题切换当
swichNav: function(e) {
let cur = e.currentTarget.dataset.current;
if (this.currentTab != cur) {
this.currentTab = cur;
}
},
checkCor: function() {
let item = this.selectedArr[this.currentTab];
item.scrollViewId = 'id__1';
this.$nextTick(() => {
setTimeout(() => {
let val = item.index < 2 ? 0 : Number(item.index - 2);
item.scrollViewId = `id_${val}`;
}, 2);
});
if (this.currentTab > 1) {
this.scrollViewId = `id_${this.currentTab - 1}`;
} else {
this.scrollViewId = `id_0`;
}
},
change(index, subIndex, subItem) {
let item = this.selectedArr[index];
if (item.index == subIndex) return;
item.index = subIndex;
item.text = subItem.text;
item.value = subItem.value;
item.subText = subItem.subText || '';
item.src = subItem.src || '';
this.$emit('change', {
layer: index,
subIndex: subIndex, //layer=> Array index
...subItem
});
if (!this.request) {
let data = this.getItemList(index, subIndex);
this.subLevelData(data, index);
}
},
//新增子级数据时处理
subLevelData(data, layer) {
if (!data || data.length === 0) {
if (layer == -1) return;
//完成选择
let arr = this.selectedArr;
if (layer < arr.length - 1) {
let newArr = arr.slice(0, layer + 1);
this.selectedArr = newArr;
}
let result = JSON.parse(JSON.stringify(this.selectedArr));
let lastItem = result[result.length - 1] || {};
let text = '';
result.map(item => {
text += item.text;
delete item['list'];
//delete item['index'];
delete item['scrollViewId'];
return item;
});
this.$emit('complete', {
result: result,
value: lastItem.value,
text: text,
subText: lastItem.subText,
src: lastItem.src
});
} else {
//重置数据( >layer层级
let item = [{
text: this.text,
subText: '',
value: '',
src: '',
index: -1,
scrollViewId: 'id__1',
list: data
}];
if (layer == -1) {
this.selectedArr = item;
} else {
let retainArr = this.selectedArr.slice(0, layer + 1);
this.selectedArr = retainArr.concat(item);
}
this.$nextTick(() => {
this.currentTab = this.selectedArr.length - 1;
});
}
}
}
};
</script>
<style scoped>
.tui-cascade-selection {
width: 100%;
box-sizing: border-box;
}
.tui-selection-header {
width: 100%;
display: flex;
align-items: center;
position: relative;
box-sizing: border-box;
}
.tui-bottom-line {
position: relative;
}
.tui-bottom-line::after {
width: 100%;
content: '';
position: absolute;
border-bottom: 1rpx solid #eaeef1;
-webkit-transform: scaleY(0.5) translateZ(0);
transform: scaleY(0.5) translateZ(0);
transform-origin: 0 100%;
bottom: 0;
right: 0;
left: 0;
}
.tui-btm-none::after {
border-bottom: 0 !important;
}
.tui-header-item {
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max-width: 350rpx;
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padding: 15rpx 30rpx;
box-sizing: border-box;
flex-shrink: 0;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
position: relative;
}
.tui-font-bold {
font-weight: bold;
}
.tui-active-line {
width: 60rpx;
height: 6rpx;
border-radius: 4rpx;
position: absolute;
bottom: 0;
right: 0;
left: 50%;
transform: translateX(-50%);
}
.tui-selection-cell {
width: 100%;
box-sizing: border-box;
display: flex;
align-items: center;
}
.tui-icon-success {
margin-right: 12rpx;
}
.tui-cell-img {
margin-right: 12rpx;
flex-shrink: 0;
}
.tui-cell-title {
word-break: break-all;
}
.tui-flex-shrink {
flex-shrink: 0;
}
.tui-font-bold {
font-weight: bold;
}
.tui-cell-sub_title {
margin-left: 20rpx;
word-break: break-all;
}
.tui-first-item {
width: 100%;
}
</style>