githubmirror/reveal.js

plugin/highlight/highlight.js
5 строк808 KB
Hakim El Hattab
export the highlight.js instance
27 май 2020, 16:25
27 май 2020, 16:255e4c5c3
!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e=e||self).RevealHighlight=t()}(this,(function(){"use strict";va … [Строка слишком длинная. Вы можете скачать файл]
/*!
	 * reveal.js plugin that adds syntax highlight support.
	 */
var Tl={id:"highlight",HIGHLIGHT_STEP_DELIMITER:"|",HIGHLIGHT_LINE_DELIMITER:",",HIGHLIGHT_LINE_RANGE_DELIMITER:"-",hljs:Sl,init:function(e){var t=e.getConfig().highlight||{};t.highlightOnLoad="boolean"!=typeof t.highlightOnLoad||t.highlightOnLoad,t.escapeHTML="boolean"!=typeof t.escapeHTML||t.escapeHTML,[].slice.call(e.getRevealElement().querySelectorAll("pre code")).forEach((function(e){e.hasAttribute("data-trim")&&"function"==typeof e.innerHTML.trim&&(e.innerHTML=function(e){function t(e){return e.replace(/^[\s\uFEFF\xA0]+/g,"")}return function(e){var a=function(e){for(var t=e.split("\n"),a=0;a<t.length&&""===t[a].trim();a++)t.splice(a--,1);for(a=t.length-1;a>=0&&""===t[a].trim();a--)t.splice(a,1);return t.join("\n")}(e.innerHTML).split("\n"),n=a.reduce((function(e,a){return a.length>0&&t(a).length>0&&e>a.length-t(a).length?a.length-t(a).length:e}),Number.POSITIVE_INFINITY);return a.map((function(e,t){return e.slice(n)})).join("\n")}(e)}(e)),t.escapeHTML&&!e.hasAttribute("data-noescape")&&(e.innerHTML=e.innerHTML.replace(/</g,"&lt;").replace(/>/g,"&gt;")),e.addEventListener("focusout",(function(e){Sl.highlightBlock(e.currentTarget)}),!1),t.highlightOnLoad&&Tl.highlightBlock(e)})),e.on("pdf-ready",(function(){[].slice.call(e.getRevealElement().querySelectorAll("pre code[data-line-numbers].current-fragment")).forEach((function(e){Tl.scrollHighlightedLineIntoView(e,{},!0)}))}))},highlightBlock:function(e){if(Sl.highlightBlock(e),0!==e.innerHTML.trim().length&&e.hasAttribute("data-line-numbers")){Sl.lineNumbersBlock(e,{singleLine:!0});var t={currentBlock:e},a=Tl.deserializeHighlightSteps(e.getAttribute("data-line-numbers"));if(a.length>1){var n=parseInt(e.getAttribute("data-fragment-index"),10);("number"!=typeof n||isNaN(n))&&(n=null),a.slice(1).forEach((function(a){var r=e.cloneNode(!0);r.setAttribute("data-line-numbers",Tl.serializeHighlightSteps([a])),r.classList.add("fragment"),e.parentNode.appendChild(r),Tl.highlightLines(r),"number"==typeof n?(r.setAttribute("data-fragment-index",n),n+=1):r.removeAttribute("data-fragment-index"),r.addEventListener("visible",Tl.scrollHighlightedLineIntoView.bind(Tl,r,t)),r.addEventListener("hidden",Tl.scrollHighlightedLineIntoView.bind(Tl,r.previousSibling,t))})),e.removeAttribute("data-fragment-index"),e.setAttribute("data-line-numbers",Tl.serializeHighlightSteps([a[0]]))}var r="function"==typeof e.closest?e.closest("section:not(.stack)"):null;if(r){r.addEventListener("visible",(function a(){Tl.scrollHighlightedLineIntoView(e,t,!0),r.removeEventListener("visible",a)}))}Tl.highlightLines(e)}},scrollHighlightedLineIntoView:function(e,t,a){cancelAnimationFrame(t.animationFrameID),t.currentBlock&&(e.scrollTop=t.currentBlock.scrollTop),t.currentBlock=e;var n=this.getHighlightedLineBounds(e),r=e.offsetHeight,i=getComputedStyle(e);r-=parseInt(i.paddingTop)+parseInt(i.paddingBottom);var o=e.scrollTop,s=n.top+(Math.min(n.bottom-n.top,r)-r)/2,l=e.querySelector(".hljs-ln");if(l&&(s+=l.offsetTop-parseInt(i.paddingTop)),s=Math.max(Math.min(s,e.scrollHeight-r),0),!0===a||o===s)e.scrollTop=s;else{if(e.scrollHeight<=r)return;var _=0;!function a(){_=Math.min(_+.02,1),e.scrollTop=o+(s-o)*Tl.easeInOutQuart(_),_<1&&(t.animationFrameID=requestAnimationFrame(a))}()}},easeInOutQuart:function(e){return e<.5?8*e*e*e*e:1-8*--e*e*e*e},getHighlightedLineBounds:function(e){var t=e.querySelectorAll(".highlight-line");if(0===t.length)return{top:0,bottom:0};var a=t[0],n=t[t.length-1];return{top:a.offsetTop,bottom:n.offsetTop+n.offsetHeight}},highlightLines:function(e,t){var a=Tl.deserializeHighlightSteps(t||e.getAttribute("data-line-numbers"));a.length&&a[0].forEach((function(t){var a=[];"number"==typeof t.end?a=[].slice.call(e.querySelectorAll("table tr:nth-child(n+"+t.start+"):nth-child(-n+"+t.end+")")):"number"==typeof t.start&&(a=[].slice.call(e.querySelectorAll("table tr:nth-child("+t.start+")"))),a.length&&(a.forEach((function(e){e.classList.add("highlight-line")})),e.classList.add("has-highlights"))}))},deserializeHighlightSteps:function(e){return(e=(e=e.replace(/\s/g,"")).split(Tl.HIGHLIGHT_STEP_DELIMITER)).map((function(e){return e.split(Tl.HIGHLIGHT_LINE_DELIMITER).map((function(e){if(/^[\d-]+$/.test(e)){e=e.split(Tl.HIGHLIGHT_LINE_RANGE_DELIMITER);var t=parseInt(e[0],10),a=parseInt(e[1],10);return isNaN(a)?{start:t}:{start:t,end:a}}return{}}))}))},serializeHighlightSteps:function(e){return e.map((function(e){return e.map((function(e){return"number"==typeof e.end?e.start+Tl.HIGHLIGHT_LINE_RANGE_DELIMITER+e.end:"number"==typeof e.start?e.start:""})).join(Tl.HIGHLIGHT_LINE_DELIMITER)})).join(Tl.HIGHLIGHT_STEP_DELIMITER)}};return function(){return Tl}}));