@evermade/overflow-slider
Version:
Accessible slider tha works with overflow: auto.
2 lines (1 loc) • 7.38 kB
JavaScript
import t from"./details.min.js";import{generateId as e,objectsAreEqual as o,getOutermostChildrenEdgeMarginSum as n}from"./utils.min.js";function l(l,i,r){let a,s={};function c(e=!1){const n=a.details,l=t(a);a.details=l,e||o(n,l)?e&&a.emit("detailsChanged"):a.emit("detailsChanged")}function f(){a.slides=Array.from(a.container.querySelectorAll(a.options.slidesSelector))}function d(){a.container.style.setProperty("--slider-container-width",`${a.details.containerWidth}px`),a.container.style.setProperty("--slider-scrollable-width",`${a.details.scrollableAreaWidth}px`),a.container.style.setProperty("--slider-slides-count",`${a.details.slideCount}`)}function h(){a.container.setAttribute("data-has-overflow",a.details.hasOverflow?"true":"false"),a.options.rtl&&a.container.setAttribute("dir","rtl")}function u(t,e=null){const o=e||a.options.scrollBehavior,n=t.getBoundingClientRect(),l=a.container.getBoundingClientRect(),i=a.container.offsetWidth,r=a.container.scrollLeft,s=n.left-l.left+r,c=s+n.width;let f=null;f=Math.floor(s)<Math.floor(r)?s:Math.floor(c)>Math.floor(r)+Math.floor(i)?c-i:0===Math.floor(s)?0:s,null!==f&&setTimeout((t=>{a.emit("programmaticScrollStart"),a.container.scrollTo({left:t,behavior:o})}),50,f)}function g(){const t=a.container.getBoundingClientRect(),e=a.getScrollLeft(),o=a.slides;let n=0,l=!1;if(a.options.rtl){const l=a.getInclusiveScrollWidth()-e-a.getInclusiveClientWidth(),i=[];for(let e=o.length-1;e>=0;e--){const n=o[e].getBoundingClientRect(),r=Math.abs(n.left)-Math.abs(t.left)+l;i.push({slide:o[e],slideEnd:r})}let r=null,s=null;for(let t=0;t<i.length;t++){const e=Math.abs(i[t].slideEnd-l);(null===s||e<s)&&(s=e,r=i[t].slide)}n=r?o.indexOf(r):o.length-1}else for(let i=0;i<o.length;i++){const r=o[i].getBoundingClientRect().left-t.left+e+v();if(Math.floor(r)>=Math.floor(e)){n=i;break}i===o.length-1&&(l=!0)}l&&(n=o.length-1);const i=a.activeSlideIdx;a.activeSlideIdx=n,i!==n&&a.emit("activeSlideChanged")}function m(t){const e=a.slides[t];e&&u(e)}function M(){return a.options.rtl?Math.abs(a.container.scrollLeft):a.container.scrollLeft}function v(){let t=0;if(a.slides.length>1){const e=a.slides[0].getBoundingClientRect(),o=a.slides[1].getBoundingClientRect();t=a.options.rtl?Math.abs(Math.floor(o.right-e.left)):Math.floor(o.left-e.right)}return t}function p(){let t=0;const e=a.container.getAttribute("data-full-width-offset");return e&&(t=parseInt(e)),Math.floor(t)}return a={emit:function(t){var e;s&&s[t]&&s[t].forEach((t=>{t(a)}));const o=null===(e=null==a?void 0:a.options)||void 0===e?void 0:e[t];"function"==typeof o&&o(a)},moveToDirection:function(t="prev"){const e=a.options.scrollStrategy,o=a.container.scrollLeft,n=a.container.getBoundingClientRect(),l=a.container.offsetWidth;let i=o;const r=a.options.rtl?"prev"===t?"next":"prev":t;if("prev"===r?i=Math.max(0,o-a.container.offsetWidth):"next"===r&&(i=Math.min(a.getInclusiveScrollWidth(),o+a.container.offsetWidth)),"fullSlide"===e){let t=null;if(t="prev"===r?Math.max(0,i-v()):Math.min(a.getInclusiveScrollWidth(),i+v()),"next"===r){let e=!1;for(let l of a.slides){const r=l.getBoundingClientRect(),a=r.left-n.left+o,s=a+r.width;if(Math.floor(a)<Math.floor(i)&&Math.floor(s)>Math.floor(i)){t=a,e=!0;break}}if(e||(t=Math.min(i,a.getInclusiveScrollWidth()-a.container.offsetWidth)),t)if(Math.floor(t)>Math.floor(o)){const e=Math.floor(a.getInclusiveScrollWidth())-Math.floor(l);i=Math.min(t,e)}else i=Math.min(a.getInclusiveScrollWidth(),o+l)}else{let e=!1;for(let i of a.slides){const r=i.getBoundingClientRect(),a=r.left-n.left+o,s=a+r.width;if(Math.floor(a)<Math.floor(o)&&Math.floor(s)>Math.floor(o)){t=s-l,e=!0;break}}e||(t=Math.max(0,o-l)),t&&Math.floor(t)<Math.floor(o)&&(i=t)}}const s=i-p();Math.floor(s)>=0&&(i=s),a.emit("programmaticScrollStart"),a.container.style.scrollBehavior=a.options.scrollBehavior,a.container.scrollLeft=i,setTimeout((()=>a.container.style.scrollBehavior=""),50)},moveToSlide:m,moveToSlideInDirection:function(t){const e=a.activeSlideIdx;"prev"===t?e>0&&m(e-1):"next"===t&&e<a.slides.length-1&&m(e+1)},snapToClosestSlide:function(t="prev"){const e=a.options.rtl?"prev"===t:"next"===t,o=[];for(let t=0;t<a.slides.length;t++){const e=a.slides[t],n=e.offsetWidth,l=a.options.rtl?Math.abs(e.offsetLeft+n-a.details.containerWidth):e.offsetLeft,i=l+n,r=l+n/2,s=Math.min(r,l+a.options.emulateScrollSnapMaxThreshold);o.push({start:l,middle:r,end:i,width:n,trigger:s,slide:e,offSetleft:e.offsetLeft,rect:e.getBoundingClientRect()})}let n=null;const l=M();if(e)for(let t=0;t<o.length;t++){const e=o[t];if(0===t&&Math.floor(l)<=Math.floor(e.trigger)){n=0;break}if(Math.floor(M())<=Math.floor(e.trigger)){n=e.start;break}}else for(let t=o.length-1;t>=0;t--){const e=o[t];if(t===o.length-1&&Math.floor(l)>=Math.floor(e.trigger)){n=e.start;break}if(Math.floor(M())>=Math.floor(e.trigger)){n=e.start;break}}if(null!==n){const t=n-p();Math.floor(t)>=0&&(n=t);const e=a.options.scrollBehavior||"smooth";a.container.scrollTo({left:a.options.rtl?-n:n,behavior:e})}},getInclusiveScrollWidth:function(){return a.container.scrollWidth+n(a.container)},getInclusiveClientWidth:function(){return a.container.clientWidth+n(a.container)},getScrollLeft:M,setScrollLeft:function(t){a.container.scrollLeft=a.options.rtl?-t:t},on:function(t,e){s[t]||(s[t]=[]),s[t].push(e)},options:i},function(){a.container=l;let t=l.getAttribute("id");null===t&&(t=e("overflow-slider"),l.setAttribute("id",t)),f(),c(!0),g(),a.on("contentsChanged",(()=>{f(),c(),g()})),a.on("containerSizeChanged",(()=>c()));let o=0;if(a.on("scroll",(()=>{o&&window.cancelAnimationFrame(o),o=window.requestAnimationFrame((()=>{c(),g()}))})),function(){new MutationObserver((()=>a.emit("contentsChanged"))).observe(a.container,{childList:!0});let t,e,o;new ResizeObserver((()=>a.emit("containerSizeChanged"))).observe(a.container);let n=a.container.scrollLeft,l=a.container.scrollLeft,i=a.container.scrollLeft,r=!1,s=!1,c=!1;a.container.addEventListener("scroll",(()=>{const e=a.container.scrollLeft;Math.floor(n)!==Math.floor(e)&&(r||(r=!0,a.emit("scrollStart")),n=e,clearTimeout(t),t=setTimeout((()=>{r=!1,a.emit("scrollEnd")}),50),a.emit("scroll")),s&&f()}));const f=()=>{const t=a.container.scrollLeft;Math.floor(l)===Math.floor(t)||c||(s||(a.emit("nativeScrollStart"),s=!0),a.emit("nativeScroll"),l=t,clearTimeout(e),e=setTimeout((()=>{s=!1,a.emit("nativeScrollEnd"),i=l}),50))};a.container.addEventListener("touchmove",f),a.container.addEventListener("mousewheel",f),a.container.addEventListener("wheel",f),a.on("programmaticScrollStart",(()=>{c=!0})),a.container.addEventListener("scroll",(()=>{const t=a.container.scrollLeft;Math.floor(i)!==Math.floor(t)&&!s&&c&&(i=t,clearTimeout(o),o=setTimeout((()=>{c=!1,a.emit("programmaticScrollEnd"),l=i}),50),a.emit("programmaticScroll"))})),a.on("programmaticScrollStart",(()=>{a.container.style.scrollSnapType="none"})),a.on("nativeScrollStart",(()=>{a.container.style.scrollSnapType=""}));let d=!1;a.container.addEventListener("mousedown",(()=>{d=!0})),a.container.addEventListener("touchstart",(()=>{d=!0}),{passive:!0}),a.container.addEventListener("focusin",(t=>{if(!d){let e=t.target;for(;e.parentElement!==a.container&&e.parentElement;)e=e.parentElement;u(e,"auto")}d=!1}))}(),h(),d(),r)for(const t of r)t(a);a.on("detailsChanged",(()=>{h(),d()})),a.emit("created"),a.container.setAttribute("data-ready","true")}(),a}export{l as default};