33 lines
1.0 KiB
TypeScript
33 lines
1.0 KiB
TypeScript
/*
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* https://github.com/morethanwords/tweb
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* Copyright (C) 2019-2021 Eduard Kuzmenko
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* https://github.com/morethanwords/tweb/blob/master/LICENSE
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*/
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import findAndSpliceAll from '../helpers/array/findAndSpliceAll';
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import LazyLoadQueueIntersector, {LazyLoadElement} from './lazyLoadQueueIntersector';
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import VisibilityIntersector, {OnVisibilityChange} from './visibilityIntersector';
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export default class LazyLoadQueueRepeat2 extends LazyLoadQueueIntersector {
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constructor(parallelLimit?: number, protected onVisibilityChange?: OnVisibilityChange) {
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super(parallelLimit);
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this.intersector = new VisibilityIntersector((item) => {
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const {target, visible} = item;
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const spliced = findAndSpliceAll(this.queue, (i) => i.div === target);
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if(visible && spliced.length) {
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spliced.forEach((item) => {
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this.queue.unshift(item);
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});
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}
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this.onVisibilityChange && this.onVisibilityChange(item);
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this.setProcessQueueTimeout();
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});
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}
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public observe(el: LazyLoadElement) {
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super.observe(el);
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}
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}
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