42 lines
No EOL
1.1 KiB
HTML
42 lines
No EOL
1.1 KiB
HTML
<div class="virtual-list-item"
|
|
ref:node
|
|
style="transform: translate3d(0, {{offset}}px, 0);"
|
|
>
|
|
<:Component {component} virtualProps="{{props}}" />
|
|
</div>
|
|
<style>
|
|
.virtual-list-item {
|
|
position: absolute;
|
|
top: 0;
|
|
}
|
|
</style>
|
|
<script>
|
|
import { virtualListStore } from '../_utils/virtualListStore'
|
|
|
|
let updateItemHeights = {}
|
|
let promise = Promise.resolve()
|
|
|
|
export default {
|
|
oncreate() {
|
|
let key = this.get('key')
|
|
updateItemHeights[key] = this.refs.node.offsetHeight
|
|
promise.then(() => {
|
|
// update all item heights in one microtask batch for better perf
|
|
let updatedKeys = Object.keys(updateItemHeights)
|
|
if (!updatedKeys.length) {
|
|
return
|
|
}
|
|
// batch all updates to itemHeights for better perf
|
|
let itemHeights = this.store.get('itemHeights')
|
|
for (key of updatedKeys) {
|
|
itemHeights[key] = updateItemHeights[key]
|
|
}
|
|
this.store.set({
|
|
itemHeights: itemHeights
|
|
})
|
|
updateItemHeights = {}
|
|
})
|
|
},
|
|
store: () => virtualListStore
|
|
}
|
|
</script> |