u-refresh-virtual-list.vue
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<template>
<u-pull-refresh
:refreshing="refreshing"
:threshold="50"
@refresh="handleRefresh"
>
<u-virtual-list
ref="virtualList"
:list-data="listData"
:item-height="itemHeight"
:height="height"
:buffer="buffer"
:key-field="keyField"
:scroll-top="scrollTop"
@scroll="handleScroll"
>
<template #default="{ item, index }">
<slot :item="item" :index="index"></slot>
</template>
</u-virtual-list>
</u-pull-refresh>
</template>
<script>
export default {
name: 'u-refresh-virtual-list',
props: {
// 数据源
listData: {
type: Array,
default: () => []
},
// 每项高度（固定高度模式）
itemHeight: {
type: Number,
default: 50
},
// 容器高度
height: {
type: [String, Number],
default: '100%'
},
// 缓冲区项数
buffer: {
type: Number,
default: 4
},
// 索引键名
keyField: {
type: String,
default: 'id'
}
},
data() {
return {
refreshing: false,
scrollTop: 0
}
},
methods: {
handleRefresh() {
this.refreshing = true
this.$emit('refresh')
},
handleScroll(scrollTop) {
this.scrollTop = scrollTop
this.$emit('scroll', scrollTop)
},
finishRefresh() {
this.refreshing = false
},
scrollTo(top) {
this.scrollTop = top
},
scrollToTop() {
this.scrollTo(0)
}
}
}
</script>