koel/resources/assets/js/mixins/infinite-scroll.js
2017-10-03 00:01:37 +01:00

34 lines
965 B
JavaScript

import toTopButton from '@/components/shared/to-top-button.vue'
/**
* Add a "infinite scroll" functionality to any component using this mixin.
* Such a component should have a `scrolling` method bound to `scroll` event on
* the wrapper element: @scroll="scrolling"
*/
export default {
components: { toTopButton },
data () {
return {
numOfItems: 30, // Number of currently loaded and displayed items
perPage: 30 // Number of items to be loaded per "page"
}
},
methods: {
scrolling ({ target: { scrollTop, clientHeight, scrollHeight }}) {
// Here we check if the user has scrolled to the end of the wrapper (or 32px to the end).
// If that's true, load more items.
if (scrollTop + clientHeight >= scrollHeight - 32) {
this.displayMore()
}
},
/**
* Load and display more items into the scrollable area.
*/
displayMore () {
this.numOfItems += this.perPage
}
}
}