index.vue
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<template>
<uni-shadow-root class="vant-dist-tree-select-index"><view class="van-tree-select" :style="'height: '+(utils.addUnit(height))">
<scroll-view scroll-y class="van-tree-select__nav">
<van-sidebar :active-key="mainActiveIndex" @change="onClickNav" custom-class="van-tree-select__nav__inner">
<van-sidebar-item v-for="(item,index) in (items)" :key="item.index" custom-class="main-item-class" active-class="main-active-class" disabled-class="main-disabled-class" :badge="item.badge" :dot="item.dot" :title="item.text" :disabled="item.disabled"></van-sidebar-item>
</van-sidebar>
</scroll-view>
<scroll-view scroll-y class="van-tree-select__content">
<slot name="content"></slot>
<view v-for="(item,index) in (subItems)" :key="item.id" :class="'van-ellipsis content-item-class '+(utils.bem('tree-select__item', { active: wxs.isActive(activeId, item.id), disabled: item.disabled }))+' '+(wxs.isActive(activeId, item.id) ? 'content-active-class' : '')+' '+(item.disabled ? 'content-disabled-class' : '')" :data-item="item" @click="onSelectItem">
{{ item.text }}
<van-icon v-if="wxs.isActive(activeId, item.id)" :name="selectedIcon" size="16px" class="van-tree-select__selected"></van-icon>
</view>
</scroll-view>
</view></uni-shadow-root>
</template>
<wxs src="../wxs/utils.wxs" module="utils"></wxs><wxs src="./index.wxs" module="wxs"></wxs>
<script>
import VanIcon from '../icon/index.vue'
import VanSidebar from '../sidebar/index.vue'
import VanSidebarItem from '../sidebar-item/index.vue'
global['__wxVueOptions'] = {components:{'van-icon': VanIcon,'van-sidebar': VanSidebar,'van-sidebar-item': VanSidebarItem}}
global['__wxRoute'] = 'vant/dist/tree-select/index'
import { VantComponent } from '../common/component';
VantComponent({
classes: [
'main-item-class',
'content-item-class',
'main-active-class',
'content-active-class',
'main-disabled-class',
'content-disabled-class',
],
props: {
items: {
type: Array,
observer: 'updateSubItems',
},
activeId: null,
mainActiveIndex: {
type: Number,
value: 0,
observer: 'updateSubItems',
},
height: {
type: [Number, String],
value: 300,
},
max: {
type: Number,
value: Infinity,
},
selectedIcon: {
type: String,
value: 'success',
},
},
data: {
subItems: [],
},
methods: {
// 当一个子项被选择时
onSelectItem(event) {
const { item } = event.currentTarget.dataset;
const isArray = Array.isArray(this.data.activeId);
// 判断有没有超出右侧选择的最大数
const isOverMax = isArray && this.data.activeId.length >= this.data.max;
// 判断该项有没有被选中, 如果有被选中，则忽视是否超出的条件
const isSelected = isArray
? this.data.activeId.indexOf(item.id) > -1
: this.data.activeId === item.id;
if (!item.disabled && (!isOverMax || isSelected)) {
this.$emit('click-item', item);
}
},
// 当一个导航被点击时
onClickNav(event) {
const index = event.detail;
const item = this.data.items[index];
if (!item.disabled) {
this.$emit('click-nav', { index });
}
},
// 更新子项列表
updateSubItems() {
const { items, mainActiveIndex } = this.data;
const { children = [] } = items[mainActiveIndex] || {};
this.setData({ subItems: children });
},
},
});
export default global['__wxComponents']['vant/dist/tree-select/index']
</script>
<style platform="mp-weixin">
@import '../common/index.css';.van-tree-select{position:relative;display:-webkit-flex;display:flex;-webkit-user-select:none;user-select:none;font-size:14px;font-size:var(--tree-select-font-size,14px)}.van-tree-select__nav{-webkit-flex:1;flex:1;background-color:#f7f8fa;background-color:var(--tree-select-nav-background-color,#f7f8fa);--sidebar-padding:12px 8px 12px 12px}.van-tree-select__nav__inner{width:100%!important;height:100%}.van-tree-select__content{-webkit-flex:2;flex:2;background-color:#fff;background-color:var(--tree-select-content-background-color,#fff)}.van-tree-select__item{position:relative;font-weight:700;padding:0 32px 0 16px;padding:0 32px 0 var(--padding-md,16px);line-height:44px;line-height:var(--tree-select-item-height,44px)}.van-tree-select__item--active{color:#ee0a24;color:var(--tree-select-item-active-color,#ee0a24)}.van-tree-select__item--disabled{color:#c8c9cc;color:var(--tree-select-item-disabled-color,#c8c9cc)}.van-tree-select__selected{position:absolute;top:50%;-webkit-transform:translateY(-50%);transform:translateY(-50%);right:16px;right:var(--padding-md,16px)}
</style>