pinafore/routes/_components/VirtualListItem.html
2018-01-15 12:23:28 -08:00

32 lines
789 B
HTML

<div class="virtual-list-item"
ref:node
style="transform: translate3d(0, {{itemOffset}}px, 0);"
data-virtual-index="{{index}}"
data-virtual-key="{{key}}"
>
<:Component {component} virtualProps="{{props}}" />
</div>
<style>
.virtual-list-item {
position: absolute;
top: 0;
will-change: transform;
}
</style>
<script>
import { virtualListStore } from '../_utils/virtualListStore'
export default {
oncreate() {
let itemHeights = this.store.get('itemHeights')
itemHeights[this.get('key')] = this.refs.node.offsetHeight
this.store.set({itemHeights: itemHeights})
},
computed: {
itemOffset: ($itemOffsets, key) => {
return $itemOffsets[key] || 0
}
},
store: () => virtualListStore
}
</script>