<template>
<view class="HMfilterDropdown" @touchmove.stop.prevent="discard" >
<view class="nav">
<block v-for="(item,index) in menu" :key="index">
<view class="first-menu" :class="{'on':showPage==index}" @tap="togglePage(index)">
<text class="name">{{item.name}}</text>
<text class="iconfont triangle" :style="'transform:rotate('+triangleDeg[index]+'deg);'"></text>
</view>
</block>
</view>
<view class="mask" :class="{'show':isShowMask,'hide':maskVisibility!=true}" @tap="togglePage(showPage)"></view>
<block v-for="(page,page_index) in subData" :key="page_index">
<view class="sub-menu-class" :class="{'show':showPage==page_index,'hide':pageState[page_index]!=true}">
<block v-if="page.type=='hierarchy'&& page.submenu.length>0">
<scroll-view class="sub-menu-list" :class="[activeMenuArr[page_index].length>1?'first':'alone']"
:scroll-y="true" :scroll-into-view="'first_id'+firstScrollInto">
<block v-for="(sub,index) in page.submenu" :key="index">
<view class="sub-menu" :id="'first_id'+index" :class="{'on':activeMenuArr[page_index][0]==index}" @tap="selectHierarchyMenu(page_index,index,null,null)">
<view class="menu-name">
<text>{{sub.name}}</text>
<text class="iconfont selected"></text>
</view>
</view>
</block>
</scroll-view>
<block v-for="(sub,index) in page.submenu" :key="index">
<scroll-view class="sub-menu-list not-first" :scroll-y="true" v-if="activeMenuArr[page_index][0]==index&&sub.submenu.length>0"
:scroll-into-view="'second_id'+secondScrollInto">
<block v-for="(sub_second,second_index) in sub.submenu" :key="second_index">
<view class="sub-menu" :id="'second_id'+second_index" :class="{'on':activeMenuArr[page_index][1]==second_index}">
<view class="menu-name" @tap="selectHierarchyMenu(page_index,activeMenuArr[page_index][0],second_index,null)">
<text>{{sub_second.name}}</text>
<text class="iconfont selected"></text>
</view>
<view class="more-sub-menu" v-if="sub_second.submenu&&sub.submenu.length>0&&sub_second.submenu.length>0">
<block v-for="(sub2,sub2_index) in sub_second.submenu" :key="sub2_index">
<text v-if="sub_second.showAllSub || (sub2_index<8)" :class="{'on':activeMenuArr[page_index][1]==second_index&&activeMenuArr[page_index][2]==sub2_index}"
@tap="selectHierarchyMenu(page_index,activeMenuArr[page_index][0],second_index,sub2_index)">{{sub2.name}}</text>
<text v-if="sub_second.showAllSub!=true && sub2_index==8 && sub_second.submenu.length>9" @tap="showMoreSub(second_index)">更多<text
class="iconfont triangle"></text></text>
</block>
</view>
</view>
</block>
</scroll-view>
</block>
</block>
<block v-if="page.type=='filter'">
<view class="filter">
<scroll-view class="menu-box" :scroll-y="true">
<view class="box" v-for="(box,box_index) in page.submenu" :key="box_index">
<view class="title">{{box.name}}</view>
<view class="labels">
<view v-for="(label,label_index) in box.submenu" :key="label_index" @tap="selectFilterLabel(page_index,box_index,label_index)"
:class="{'on':label.selected}">{{label.name}}</view>
</view>
</view>
</scroll-view>
<view class="btn-box">
<view class="reset" @tap="resetFilterData(page_index)">重置</view>
<view class="submit" @tap="setFilterData(page_index)">确定</view>
</view>
</view>
</block>
</view>
</block>
</view>
</template>
<script>
export default {
data() {
return {
subData: [], //菜单数据
menu: [], //顶部横条数据
showPage: -1, //菜单页面显示/隐藏动画控制
pageState: [], //页面的状态
activeMenuArr: [], //UI状态
shadowActiveMenuArr: [], //记录选中
triangleDeg: [], //小三角形的翻转动画控制
isShowMask: false, //遮罩层显示/隐藏动画控制
maskVisibility: false, //遮罩层显示/隐藏状态
//滚动区域定位
firstScrollInto: 0,
secondScrollInto: 0,
componentTop:0 //组件top
}
},
props: {
filterData: {
value: Array,
default: []
},
defaultSelected:{
value: Array,
default: []
},
updateMenuName:{
value: Boolean,
default: true
}
},
watch: {
filterData: {
handler() {
this.initMenu(); //filterData重新赋值初始化菜单
},
immediate: true
},
defaultSelected(newVal) {
this.activeMenuArr = JSON.parse(JSON.stringify(newVal));
this.shadowActiveMenuArr = JSON.parse(JSON.stringify(newVal));
}
},
methods: {
initMenu() {
let tmpMenuActiveArr=[];
let tmpMenu=[];
for (let i = 0; i < this.filterData.length; i++) {
let tmpitem = this.filterData[i];
tmpMenu.push({
//如果没有设置name，则取第一个菜单作为menu.name,filter类型则将"筛选"作为menu.name
name: tmpitem.name || (tmpitem.type == "filter" ? "筛选" : tmpitem.submenu[0].name),
type: tmpitem.type
});
//初始化选中项数组-ui状态
tmpMenuActiveArr.push(this.processActive(tmpitem));
//初始化角度数组
this.triangleDeg.push(0);
//初始化控制显示状态数组
this.pageState.push(false);
//递归处理子菜单数据
tmpitem = this.processSubMenu(tmpitem);
this.filterData[i] = tmpitem;
}
this.menu = tmpMenu;
//初始化选中项数组
tmpMenuActiveArr = this.defaultSelected.length>0?this.defaultSelected:this.activeMenuArr.length>0?this.activeMenuArr:tmpMenuActiveArr;
this.activeMenuArr = JSON.parse(JSON.stringify(tmpMenuActiveArr));
this.shadowActiveMenuArr = JSON.parse(JSON.stringify(tmpMenuActiveArr));
//加载菜单数据
console.log("this.filterData.length: " + JSON.stringify(this.filterData.length));
this.subData = this.filterData;
},
//展开更多
showMoreSub(index) {
this.subData[this.showPage].submenu[this.activeMenuArr[this.showPage][0]].submenu[index].showAllSub = true;
this.$forceUpdate();
},
//选中
selectHierarchyMenu(page_index, level1_index, level2_index, level3_index) {
//读取记录
if (level1_index != null && level2_index == null && level3_index == null && this.shadowActiveMenuArr[page_index][0] ==
level1_index) {
this.activeMenuArr.splice(page_index, 1, JSON.parse(JSON.stringify(this.shadowActiveMenuArr[page_index])));
} else {
this.activeMenuArr[page_index].splice(0, 1, level1_index);
(level2_index!=null||this.activeMenuArr[page_index].length>=2)&&this.activeMenuArr[page_index].splice(1, 1, level2_index) || this.activeMenuArr[page_index].splice(1, 1);
(level3_index!=null||this.activeMenuArr[page_index].length>=3)&&this.activeMenuArr[page_index].splice(2, 1, level3_index) || this.activeMenuArr[page_index].splice(2, 1);
}
//写入结果
if (level3_index != null || level2_index != null || (level1_index != null && this.subData[page_index].submenu[level1_index].submenu.length == 0)
) {
let sub = this.subData[page_index].submenu[level1_index].submenu[level2_index];
if(this.updateMenuName){
this.menu[page_index].name = (level3_index != null && sub.submenu[level3_index].name) || (level2_index != null && sub.name) || this.subData[page_index].submenu[level1_index].name;
}
this.shadowActiveMenuArr[page_index] = JSON.parse(JSON.stringify(this.activeMenuArr[page_index]));
this.togglePage(this.showPage);
}
},
//写入结果，筛选
setFilterData(page_index) {
this.shadowActiveMenuArr[page_index] = JSON.parse(JSON.stringify(this.activeMenuArr[page_index]));
this.togglePage(this.showPage);
},
//重置结果和ui，筛选
resetFilterData(page_index) {
let tmpArr = [];
let level = this.shadowActiveMenuArr[page_index].length;
while (level > 0) {
tmpArr.push([]);
let box = this.subData[page_index].submenu[level - 1].submenu;
for (let i = 0; i < box.length; i++) {
this.subData[page_index].submenu[level - 1].submenu[i].selected = false;
}
level--;
}
this.shadowActiveMenuArr[page_index] = JSON.parse(JSON.stringify(tmpArr));
this.activeMenuArr[page_index] = JSON.parse(JSON.stringify(tmpArr));
this.$forceUpdate();
},
//选中筛选类label-UI状态
selectFilterLabel(page_index, box_index, label_index) {
let find_index = this.activeMenuArr[page_index][box_index].indexOf(label_index);
if (find_index > -1) {
this.activeMenuArr[page_index][box_index].splice(find_index, 1);
this.subData[page_index].submenu[box_index].submenu[label_index].selected = false;
} else {
this.activeMenuArr[page_index][box_index].push(label_index);
this.subData[page_index].submenu[box_index].submenu[label_index].selected = true;
}
this.$forceUpdate();
},
//菜单开关
togglePage(index) {
if (index == this.showPage) {
this.hidePageLayer(true);
this.hideMask();
this.showPage = -1;
} else {
if (this.showPage > -1) {
this.hidePageLayer(false);
}
this.showPageLayer(index);
this.showMask();
}
},
//hide遮罩层
hideMask() {
this.isShowMask = false;
setTimeout(() => {
this.maskVisibility = false;
}, 200);
},
//show遮罩层
showMask() {
this.maskVisibility = true;
this.$nextTick(() => {
setTimeout(() => {
this.isShowMask = true;
}, 0);
})
},
//hide菜单页
hidePageLayer(isAnimation) {
this.triangleDeg[this.showPage] = 0;
let tmpIndex = this.showPage;
if (isAnimation) {
setTimeout(() => {
this.pageState.splice(tmpIndex, 1, false);
}, 200);
this.confirm();
} else {
this.pageState.splice(tmpIndex, 1, false)
}
this.firstScrollInto = null;
this.secondScrollInto = null;
},
confirm() {
let index = JSON.parse(JSON.stringify(this.shadowActiveMenuArr));
let value = JSON.parse(JSON.stringify(this.shadowActiveMenuArr));
//对结果做一下处理
index.forEach((item, i) => {
if (typeof(item[0]) == 'object') {
//针对筛选结果过一个排序
item.forEach((s, j) => {
s.sort((val1, val2) => {
return val1 - val2;
});
item[j] = s;
s.forEach((v, k) => {
value[i][j][k] = this.subData[i].submenu[j].submenu[v].value;
});
});
}else{
let submenu = this.subData[i].submenu[item[0]];
value[i][0] = submenu.value;
if(value[i].length>=2 && item[1]!=null){
if(submenu.submenu.length>0){
submenu = submenu.submenu[item[1]];
value[i][1] = submenu.hasOwnProperty('value')?submenu.value:null;
}else{
value[i][1] = null
}
if(value[i].length>=3 && item[2]!=null){
if(submenu.submenu.length>0){
submenu = submenu.submenu[item[2]];
value[i][2] = submenu.hasOwnProperty('value')?submenu.value:null;
}else{
value[i][2] = null;
}
}
}
}
index[i] = item;
});
this.$emit('confirm', {
index: index,
value:value
});
},
//show菜单页
showPageLayer(index) {
this.processPage(index);
this.pageState.splice(index, 1, true);
this.$nextTick(() => {
setTimeout(() => {
this.showPage = index;
}, 0);
})
this.triangleDeg[index] = 180;
},
reloadActiveMenuArr(){
for (let i = 0; i < this.filterData.length; i++) {
let tmpitem = this.filterData[i];
let tmpArr = this.processActive(tmpitem);
tmpitem = this.processSubMenu(tmpitem);
if(this.activeMenuArr[i].length!=tmpArr.length){
this.filterData[i] = tmpitem;
this.activeMenuArr.splice(i, 1, JSON.parse(JSON.stringify(tmpArr)));
this.shadowActiveMenuArr.splice(i, 1, JSON.parse(JSON.stringify(tmpArr)));
}
}
this.subData = this.filterData;
this.$forceUpdate();
},
processPage(index) {
//check UI控制数组，结果数组,防止传入数据层级和UI控制数组不同步
this.reloadActiveMenuArr();
//重置UI控制数组
this.activeMenuArr.splice(index, 1, JSON.parse(JSON.stringify(this.shadowActiveMenuArr[index])));
if (this.menu[index].type == 'filter') {
//重载筛选页选中状态
let level = this.shadowActiveMenuArr[index].length;
for (let i = 0; i < level; i++) {
let box = this.subData[index].submenu[i].submenu;
for (let j = 0; j < box.length; j++) {
if (this.shadowActiveMenuArr[index][i].indexOf(j) > -1) {
this.subData[index].submenu[i].submenu[j].selected = true;
} else {
this.subData[index].submenu[i].submenu[j].selected = false;
}
}
}
} else if (this.menu[index].type == 'hierarchy') {
this.$nextTick(() => {
setTimeout(() => {
//滚动到选中项
this.firstScrollInto = parseInt(this.activeMenuArr[index][0]);
this.secondScrollInto = parseInt(this.activeMenuArr[index][1]);
}, 0);
})
}
},
processActive(tmpitem) {
let tmpArr = []
if (tmpitem.type == 'hierarchy'&&tmpitem.hasOwnProperty('submenu')&&tmpitem.submenu.length>0) {
let level = this.getMaxFloor(tmpitem.submenu);
while (level > 0) {
tmpArr.push(0);
level--;
}
} else if (tmpitem.type == 'filter') {
let level = tmpitem.submenu.length;
while (level > 0) {
tmpArr.push([]);
level--;
}
}
return tmpArr;
},
processSubMenu(menu) {
if (menu.hasOwnProperty('submenu') && menu.submenu.length > 0) {
for (let i = 0; i < menu.submenu.length; i++) {
menu.submenu[i] = this.processSubMenu(menu.submenu[i]);
}
} else {
menu.submenu = [];
}
return menu;
},
//计算菜单层级
getMaxFloor(treeData) {
let floor = 0
let max = 0
function each(data, floor) {
data.forEach(e => {
max = floor > max ? floor : max;
if (e.hasOwnProperty('submenu') && e.submenu.length > 0) {
each(e.submenu, floor + 1)
}
})
}
each(treeData, 1)
return max;
},
discard() {
}
}
}
</script>
<style lang="scss">
.HMfilterDropdown {
flex-shrink: 0;
width: 100%;
height: 44px;
position: fixed;
z-index: 997;
flex-wrap: nowrap;
display: flex;
flex-direction: row;
top: var(--window-top);
left:0;
view {
display: flex;
flex-wrap: nowrap;
}
}
.region {
flex: 1;
height: 44px;
}
.nav {
width: 100%;
height: 44px;
border-bottom: solid 1rpx #eee;
z-index: 12;
background-color: #ffffff;
flex-direction: row;
.first-menu {
width: 100%;
font-size: 13px;
color: #757575;
flex-direction: row;
align-items: center;
justify-content: center;
transition: color .2s linear;
&.on {
color: #ec652b;
.iconfont {
color: #ec652b;
}
}
.name {
height: 20px;
text-align: center;
text-overflow: clip;
overflow: hidden;
}
.iconfont {
width: 13px;
height: 13px;
align-items: center;
justify-content: center;
transition: transform .2s linear, color .2s linear;
}
}
}
.sub-menu-class {
width: 100%;
position: absolute;
left: 0;
transform: translate3d(0, - 100%, 0);
max-height: 345px;
background-color: #ffffff;
z-index: 11;
box-shadow: 0 5px 5px rgba(0, 0, 0, .1);
overflow: hidden;
flex-direction: row;
transition: transform .15s linear;
&.hide {
display: none;
}
&.show {
transform: translate3d(0, calc(44px + 1rpx), 0);
}
}
.sub-menu-list {
width: 100%;
height: 345px;
flex-direction: column;
.sub-menu {
min-height: 44px;
font-size: 13px;
flex-direction: column;
padding-right: 15px;
>.menu-name {
height: 44px;
flex-direction: row;
align-items: center;
justify-content: space-between;
>.iconfont {
display: none;
font-size: 18px;
color: #ec652b;
}
}
}
&.first {
flex-shrink: 0;
width: 236rpx;
background-color: #f0f0f0;
.sub-menu {
padding-left: 15px;
&.on {
background-color: #fff;
}
}
}
&.alone {
max-height: 345px;
min-height: 170px;
height: auto;
.sub-menu {
min-height: calc(44px - 1rpx);
margin-left: 15px;
border-bottom: solid 1rpx #e5e5e5;
&.on {
color: #ec652b;
>.menu-name {
>.iconfont {
display: block;
}
}
}
}
}
&.not-first {
.sub-menu {
min-height: calc(44px - 1rpx);
margin-left: 15px;
border-bottom: solid 1rpx #e5e5e5;
>.menu-name {
height: calc(44px - 1rpx);
>.iconfont {
display: none;
font-size: 18px;
color: #ec652b;
}
}
&.on {
color: #ec652b;
>.menu-name {
>.iconfont {
display: block;
}
}
}
.more-sub-menu {
flex-direction: row;
flex-wrap: wrap;
padding-bottom: 9px;
>text {
height: 30px;
border-radius: 3px;
background-color: #f5f5f5;
color: #9b9b9b;
margin-bottom: 6px;
margin-right: 6px;
text-align: center;
line-height: 30px;
border: solid #f5f5f5 1rpx;
flex: 0 0 calc(33.33% - 6px);
overflow: hidden;
font-size: 12px;
&:nth-child(3n) {
margin-right: 0;
}
&.on {
border-color: #f6c8ac;
color: #ec652b;
}
.iconfont {
color: #9b9b9b;
}
}
}
}
}
}
.filter {
width: 100%;
height: 345px;
display: flex;
flex-direction: column;
justify-content: space-between;
align-items: center;
.menu-box {
width: 698rpx;
height: calc(345px - 75px);
flex-shrink: 1;
.box {
width: 100%;
margin-top: 16px;
flex-direction: column;
.title {
width: 100%;
font-size: 13px;
color: #888;
}
.labels {
flex-direction: row;
flex-wrap: wrap;
.on {
border-color: #ec652b;
background-color: #ec652b;
color: #fff;
}
>view {
width: 148rpx;
height: 30px;
border: solid 1rpx #adadad;
border-radius: 2px;
margin-right: 15px;
margin-top: 8px;
font-size: 12px;
flex-direction: row;
justify-content: center;
align-items: center;
&:nth-child(4n) {
margin-right: 0;
}
}
}
}
}
.btn-box {
flex-shrink: 0;
width: 698rpx;
height: 75px;
flex-direction: row !important;
align-items: center;
justify-content: space-between;
>view {
width: 320rpx;
height: 40px;
border-radius: 40px;
border: solid 1rpx #ec652b;
align-items: center;
justify-content: center;
}
.reset {
color: #ec652b;
}
.submit {
color: #fff;
background-color: #ec652b;
}
}
}
.mask {
z-index: 10;
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0, 0, 0, 0);
transition: background-color .15s linear;
&.show {
background-color: rgba(0, 0, 0, 0.5);
}
&.hide {
display: none;
}
}
/* 字体图标 */
@font-face {
font-family: "HM-FD-font";
src: url('data:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAALAAAsAAAAABpQAAAJzAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHEIGVgCDBgp4gQIBNgIkAwwLCAAEIAWEbQc5G8sFERWMIbIfCbbzqA4hp7InSBibVsYGb4J42o82b3e/nJlHMw/NHbGOlwKJRCRpwzPtpAECCOZubdqxjYpQLMlVg+70/08edrgQOtx2ukpVyApZn+dyehPoQObHo3O85rYx9vOjXoBxQIHugW2yIkqIW2QXcScu4jwE8CSWbKSmrqUHFwOaJoCsLM5P4haSGIxRcRHshrUGucLCVcfqI3AZfV/+USguKCwNmtsxVztDxU/n55C+3W0Z4QQpEOTNFqCBbMCAjDUWB9CIwWk87aa70cYgqLkyd3dEmm+18R8eKATEBrV7A5CulBT8dKiWOYZk412XNcDdKSEKSGODnyKIDl+dmVt9/Dx4pu/xyeutkMlHISGPTsPCnoTNP9nOT6wTtDdlO6dPr47efvj942lkYuQzrhMKEjq9N6y98P3340gmlJ/RStUD6F31CAEEPtUW94/7rf+7XgaAz57X0ZHXAGsFFwVgw38yALuMb0IBbVyNamFYEw4oKMDTj3AHRQP5Pt4dci9VwSVkRNQh5r7CLskZadhsWHhRDBsXczk8ZYk3ewnCxmQeQKa3BOHvA8XXO2j+vqRhf7CE+sPmn4anvoL29JLa4qqaUQkmoK+QG2osCckq7txi2leK86aIPyJ3eQZ8xytXYmyQ51jQndJAxIJlqiGSLsOqImiZCjTiZCJt6Lq26U2OoXqwUo0hRaAE0K5AziANy/uLVeXzWyjVqyjcoeupjxDr5MMDn8MDkLG9Aenu5ZrOSSoghAUsRmogkkahSoWAtnlUARnCkY3It0Iu7mWhdmd9Z/19BwBP6GidEi0G56opckXTGZVSPxgAAAA=');
}
.iconfont {
font-family: "HM-FD-font" !important;
font-size: 13px;
font-style: normal;
color: #757575;
&.triangle {
&:before {
content: "\e65a";
}
}
&.selected {
&:before {
content: "\e607";
}
}
}
</style>