prism-line-highlight.min.js 3.6 KB

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  1. !function(){if("undefined"!=typeof Prism&&"undefined"!=typeof document&&document.querySelector){var e,t="line-numbers",i="linkable-line-numbers",n=/\n(?!$)/g,r=!0;Prism.plugins.lineHighlight={highlightLines:function(o,u,c){var h=(u="string"==typeof u?u:o.getAttribute("data-line")||"").replace(/\s+/g,"").split(",").filter(Boolean),d=+o.getAttribute("data-line-offset")||0,f=(function(){if(void 0===e){var t=document.createElement("div");t.style.fontSize="13px",t.style.lineHeight="1.5",t.style.padding="0",t.style.border="0",t.innerHTML="&nbsp;<br />&nbsp;",document.body.appendChild(t),e=38===t.offsetHeight,document.body.removeChild(t)}return e}()?parseInt:parseFloat)(getComputedStyle(o).lineHeight),p=Prism.util.isActive(o,t),g=o.querySelector("code"),m=p?o:g||o,v=[],y=g.textContent.match(n),b=y?y.length+1:1,A=g&&m!=g?function(e,t){var i=getComputedStyle(e),n=getComputedStyle(t);function r(e){return+e.substr(0,e.length-2)}return t.offsetTop+r(n.borderTopWidth)+r(n.paddingTop)-r(i.paddingTop)}(o,g):0;h.forEach((function(e){var t=e.split("-"),i=+t[0],n=+t[1]||i;if(!((n=Math.min(b+d,n))<i)){var r=o.querySelector('.line-highlight[data-range="'+e+'"]')||document.createElement("div");if(v.push((function(){r.setAttribute("aria-hidden","true"),r.setAttribute("data-range",e),r.className=(c||"")+" line-highlight"})),p&&Prism.plugins.lineNumbers){var s=Prism.plugins.lineNumbers.getLine(o,i),l=Prism.plugins.lineNumbers.getLine(o,n);if(s){var a=s.offsetTop+A+"px";v.push((function(){r.style.top=a}))}if(l){var u=l.offsetTop-s.offsetTop+l.offsetHeight+"px";v.push((function(){r.style.height=u}))}}else v.push((function(){r.setAttribute("data-start",String(i)),n>i&&r.setAttribute("data-end",String(n)),r.style.top=(i-d-1)*f+A+"px",r.textContent=new Array(n-i+2).join(" \n")}));v.push((function(){r.style.width=o.scrollWidth+"px"})),v.push((function(){m.appendChild(r)}))}}));var P=o.id;if(p&&Prism.util.isActive(o,i)&&P){l(o,i)||v.push((function(){o.classList.add(i)}));var E=parseInt(o.getAttribute("data-start")||"1");s(".line-numbers-rows > span",o).forEach((function(e,t){var i=t+E;e.onclick=function(){var e=P+"."+i;r=!1,location.hash=e,setTimeout((function(){r=!0}),1)}}))}return function(){v.forEach(a)}}};var o=0;Prism.hooks.add("before-sanity-check",(function(e){var t=e.element.parentElement;if(u(t)){var i=0;s(".line-highlight",t).forEach((function(e){i+=e.textContent.length,e.parentNode.removeChild(e)})),i&&/^(?: \n)+$/.test(e.code.slice(-i))&&(e.code=e.code.slice(0,-i))}})),Prism.hooks.add("complete",(function e(i){var n=i.element.parentElement;if(u(n)){clearTimeout(o);var r=Prism.plugins.lineNumbers,s=i.plugins&&i.plugins.lineNumbers;l(n,t)&&r&&!s?Prism.hooks.add("line-numbers",e):(Prism.plugins.lineHighlight.highlightLines(n)(),o=setTimeout(c,1))}})),window.addEventListener("hashchange",c),window.addEventListener("resize",(function(){s("pre").filter(u).map((function(e){return Prism.plugins.lineHighlight.highlightLines(e)})).forEach(a)}))}function s(e,t){return Array.prototype.slice.call((t||document).querySelectorAll(e))}function l(e,t){return e.classList.contains(t)}function a(e){e()}function u(e){return!!(e&&/pre/i.test(e.nodeName)&&(e.hasAttribute("data-line")||e.id&&Prism.util.isActive(e,i)))}function c(){var e=location.hash.slice(1);s(".temporary.line-highlight").forEach((function(e){e.parentNode.removeChild(e)}));var t=(e.match(/\.([\d,-]+)$/)||[,""])[1];if(t&&!document.getElementById(e)){var i=e.slice(0,e.lastIndexOf(".")),n=document.getElementById(i);n&&(n.hasAttribute("data-line")||n.setAttribute("data-line",""),Prism.plugins.lineHighlight.highlightLines(n,t,"temporary ")(),r&&document.querySelector(".temporary.line-highlight").scrollIntoView())}}}();