@evermade/overflow-slider
Version:
Accessible slider that is powered by overflow: auto.
2 lines (1 loc) • 1.63 kB
JavaScript
const t={visible:"is-visible",partlyVisible:"is-partly-visible",hidden:"is-hidden"};function e(e){return n=>{var i,s;const a=null!==(i=null==e?void 0:e.classNames)&&void 0!==i?i:null==e?void 0:e.classnames,l={classNames:Object.assign(Object.assign({},t),null!=a?a:{}),freezeStateOnVisible:null!==(s=null==e?void 0:e.freezeStateOnVisible)&&void 0!==s&&s},r=new WeakMap,o=Array.from(new Set(Object.values(l.classNames).filter(t=>Boolean(t)))),c=()=>{const{targetStart:t,targetEnd:e}=(()=>{const t=n.container.getBoundingClientRect(),e=t.width;if(!e)return{targetStart:t.left,targetEnd:t.right};let i=0;if("function"==typeof n.options.targetWidth)try{i=n.options.targetWidth(n)}catch(t){i=0}(!Number.isFinite(i)||i<=0)&&(i=e);const s=(e-Math.min(i,e))/2,a=Math.max(s,0);return{targetStart:t.left+a,targetEnd:t.right-a}})();n.slides.forEach(n=>{const i=n.getBoundingClientRect(),s=i.left,a=i.right;let c="hidden";a-2>t&&s+2<e&&(c=s+2>=t&&a-2<=e?"visible":"partlyVisible");const d=r.get(n);if(l.freezeStateOnVisible&&"visible"===d)return;if(d===c)return;const u=l.classNames[c];if(d){const t=l.classNames[d];t!==u&&t&&n.classList.remove(t)}else o.forEach(t=>{t!==u&&n.classList.remove(t)});u&&!n.classList.contains(u)&&n.classList.add(u),r.set(n,c)})};n.on("created",c),n.on("pluginsLoaded",c),n.on("fullWidthPluginUpdate",c),n.on("contentsChanged",c),n.on("containerSizeChanged",c),n.on("detailsChanged",c),n.on("scrollEnd",c),n.on("scrollStart",c),requestAnimationFrame(()=>{requestAnimationFrame(()=>c())});let d=0;n.on("scroll",()=>{d&&window.cancelAnimationFrame(d),d=window.requestAnimationFrame(()=>{c()})})}}export{e as default};