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Diffstat (limited to 'geschichte/plugin/highlight/plugin.js')
| -rw-r--r-- | geschichte/plugin/highlight/plugin.js | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/geschichte/plugin/highlight/plugin.js b/geschichte/plugin/highlight/plugin.js deleted file mode 100644 index 46528bf..0000000 --- a/geschichte/plugin/highlight/plugin.js +++ /dev/null @@ -1,439 +0,0 @@ -import hljs from 'highlight.js'; - -/* highlightjs-line-numbers.js 2.8.0 | (C) 2018 Yauheni Pakala | MIT License | github.com/wcoder/highlightjs-line-numbers.js */ -!function(r,o){"use strict";var e,i="hljs-ln",l="hljs-ln-line",h="hljs-ln-code",s="hljs-ln-numbers",c="hljs-ln-n",m="data-line-number",a=/\r\n|\r|\n/g;function u(e){for(var n=e.toString(),t=e.anchorNode;"TD"!==t.nodeName;)t=t.parentNode;for(var r=e.focusNode;"TD"!==r.nodeName;)r=r.parentNode;var o=parseInt(t.dataset.lineNumber),a=parseInt(r.dataset.lineNumber);if(o==a)return n;var i,l=t.textContent,s=r.textContent;for(a<o&&(i=o,o=a,a=i,i=l,l=s,s=i);0!==n.indexOf(l);)l=l.slice(1);for(;-1===n.lastIndexOf(s);)s=s.slice(0,-1);for(var c=l,u=function(e){for(var n=e;"TABLE"!==n.nodeName;)n=n.parentNode;return n}(t),d=o+1;d<a;++d){var f=p('.{0}[{1}="{2}"]',[h,m,d]);c+="\n"+u.querySelector(f).textContent}return c+="\n"+s}function n(e){try{var n=o.querySelectorAll("code.hljs,code.nohighlight");for(var t in n)n.hasOwnProperty(t)&&(n[t].classList.contains("nohljsln")||d(n[t],e))}catch(e){r.console.error("LineNumbers error: ",e)}}function d(e,n){if("object"==typeof e)e.innerHTML=f(e,n)}function f(e,n){var t,r,o=(t=e,{singleLine:function(e){return!!e.singleLine&&e.singleLine}(r=(r=n)||{}),startFrom:function(e,n){var t=1;isFinite(n.startFrom)&&(t=n.startFrom);var r=function(e,n){return e.hasAttribute(n)?e.getAttribute(n):null}(e,"data-ln-start-from");return null!==r&&(t=function(e,n){if(!e)return n;var t=Number(e);return isFinite(t)?t:n}(r,1)),t}(t,r)});return function e(n){var t=n.childNodes;for(var r in t){var o;t.hasOwnProperty(r)&&(o=t[r],0<(o.textContent.trim().match(a)||[]).length&&(0<o.childNodes.length?e(o):v(o.parentNode)))}}(e),function(e,n){var t=g(e);""===t[t.length-1].trim()&&t.pop();if(1<t.length||n.singleLine){for(var r="",o=0,a=t.length;o<a;o++)r+=p('<tr><td class="{0} {1}" {3}="{5}"><div class="{2}" {3}="{5}"></div></td><td class="{0} {4}" {3}="{5}">{6}</td></tr>',[l,s,c,m,h,o+n.startFrom,0<t[o].length?t[o]:" "]);return p('<table class="{0}">{1}</table>',[i,r])}return e}(e.innerHTML,o)}function v(e){var n=e.className;if(/hljs-/.test(n)){for(var t=g(e.innerHTML),r=0,o="";r<t.length;r++){o+=p('<span class="{0}">{1}</span>\n',[n,0<t[r].length?t[r]:" "])}e.innerHTML=o.trim()}}function g(e){return 0===e.length?[]:e.split(a)}function p(e,t){return e.replace(/\{(\d+)\}/g,function(e,n){return void 0!==t[n]?t[n]:e})}hljs?(hljs.initLineNumbersOnLoad=function(e){"interactive"===o.readyState||"complete"===o.readyState?n(e):r.addEventListener("DOMContentLoaded",function(){n(e)})},hljs.lineNumbersBlock=d,hljs.lineNumbersValue=function(e,n){if("string"!=typeof e)return;var t=document.createElement("code");return t.innerHTML=e,f(t,n)},(e=o.createElement("style")).type="text/css",e.innerHTML=p(".{0}{border-collapse:collapse}.{0} td{padding:0}.{1}:before{content:attr({2})}",[i,c,m]),o.getElementsByTagName("head")[0].appendChild(e)):r.console.error("highlight.js not detected!"),document.addEventListener("copy",function(e){var n,t=window.getSelection();!function(e){for(var n=e;n;){if(n.className&&-1!==n.className.indexOf("hljs-ln-code"))return 1;n=n.parentNode}}(t.anchorNode)||(n=-1!==window.navigator.userAgent.indexOf("Edge")?u(t):t.toString(),e.clipboardData.setData("text/plain",n),e.preventDefault())})}(window,document); - - -/*! - * reveal.js plugin that adds syntax highlight support. - */ - -const Plugin = { - - id: 'highlight', - - HIGHLIGHT_STEP_DELIMITER: '|', - HIGHLIGHT_LINE_DELIMITER: ',', - HIGHLIGHT_LINE_RANGE_DELIMITER: '-', - - hljs, - - /** - * Highlights code blocks within the given deck. - * - * Note that this can be called multiple times if - * there are multiple presentations on one page. - * - * @param {Reveal} reveal the reveal.js instance - */ - init: function( reveal ) { - - // Read the plugin config options and provide fallbacks - let config = reveal.getConfig().highlight || {}; - - config.highlightOnLoad = typeof config.highlightOnLoad === 'boolean' ? config.highlightOnLoad : true; - config.escapeHTML = typeof config.escapeHTML === 'boolean' ? config.escapeHTML : true; - - Array.from( reveal.getRevealElement().querySelectorAll( 'pre code' ) ).forEach( block => { - - block.parentNode.classList.add('code-wrapper'); - - // Code can optionally be wrapped in script template to avoid - // HTML being parsed by the browser (i.e. when you need to - // include <, > or & in your code). - let substitute = block.querySelector( 'script[type="text/template"]' ); - if( substitute ) { - // textContent handles the HTML entity escapes for us - block.textContent = substitute.innerHTML; - } - - // Trim whitespace if the "data-trim" attribute is present - if( block.hasAttribute( 'data-trim' ) && typeof block.innerHTML.trim === 'function' ) { - block.innerHTML = betterTrim( block ); - } - - // Escape HTML tags unless the "data-noescape" attrbute is present - if( config.escapeHTML && !block.hasAttribute( 'data-noescape' )) { - block.innerHTML = block.innerHTML.replace( /</g,"<").replace(/>/g, '>' ); - } - - // Re-highlight when focus is lost (for contenteditable code) - block.addEventListener( 'focusout', function( event ) { - hljs.highlightElement( event.currentTarget ); - }, false ); - - } ); - - // Triggers a callback function before we trigger highlighting - if( typeof config.beforeHighlight === 'function' ) { - config.beforeHighlight( hljs ); - } - - // Run initial highlighting for all code - if( config.highlightOnLoad ) { - Array.from( reveal.getRevealElement().querySelectorAll( 'pre code' ) ).forEach( block => { - Plugin.highlightBlock( block ); - } ); - } - - // If we're printing to PDF, scroll the code highlights of - // all blocks in the deck into view at once - reveal.on( 'pdf-ready', function() { - [].slice.call( reveal.getRevealElement().querySelectorAll( 'pre code[data-line-numbers].current-fragment' ) ).forEach( function( block ) { - Plugin.scrollHighlightedLineIntoView( block, {}, true ); - } ); - } ); - - }, - - /** - * Highlights a code block. If the <code> node has the - * 'data-line-numbers' attribute we also generate slide - * numbers. - * - * If the block contains multiple line highlight steps, - * we clone the block and create a fragment for each step. - */ - highlightBlock: function( block ) { - - hljs.highlightElement( block ); - - // Don't generate line numbers for empty code blocks - if( block.innerHTML.trim().length === 0 ) return; - - if( block.hasAttribute( 'data-line-numbers' ) ) { - hljs.lineNumbersBlock( block, { singleLine: true } ); - - var scrollState = { currentBlock: block }; - - // If there is more than one highlight step, generate - // fragments - var highlightSteps = Plugin.deserializeHighlightSteps( block.getAttribute( 'data-line-numbers' ) ); - if( highlightSteps.length > 1 ) { - - // If the original code block has a fragment-index, - // each clone should follow in an incremental sequence - var fragmentIndex = parseInt( block.getAttribute( 'data-fragment-index' ), 10 ); - - if( typeof fragmentIndex !== 'number' || isNaN( fragmentIndex ) ) { - fragmentIndex = null; - } - - // Generate fragments for all steps except the original block - highlightSteps.slice(1).forEach( function( highlight ) { - - var fragmentBlock = block.cloneNode( true ); - fragmentBlock.setAttribute( 'data-line-numbers', Plugin.serializeHighlightSteps( [ highlight ] ) ); - fragmentBlock.classList.add( 'fragment' ); - block.parentNode.appendChild( fragmentBlock ); - Plugin.highlightLines( fragmentBlock ); - - if( typeof fragmentIndex === 'number' ) { - fragmentBlock.setAttribute( 'data-fragment-index', fragmentIndex ); - fragmentIndex += 1; - } - else { - fragmentBlock.removeAttribute( 'data-fragment-index' ); - } - - // Scroll highlights into view as we step through them - fragmentBlock.addEventListener( 'visible', Plugin.scrollHighlightedLineIntoView.bind( Plugin, fragmentBlock, scrollState ) ); - fragmentBlock.addEventListener( 'hidden', Plugin.scrollHighlightedLineIntoView.bind( Plugin, fragmentBlock.previousSibling, scrollState ) ); - - } ); - - block.removeAttribute( 'data-fragment-index' ); - block.setAttribute( 'data-line-numbers', Plugin.serializeHighlightSteps( [ highlightSteps[0] ] ) ); - - } - - // Scroll the first highlight into view when the slide - // becomes visible. Note supported in IE11 since it lacks - // support for Element.closest. - var slide = typeof block.closest === 'function' ? block.closest( 'section:not(.stack)' ) : null; - if( slide ) { - var scrollFirstHighlightIntoView = function() { - Plugin.scrollHighlightedLineIntoView( block, scrollState, true ); - slide.removeEventListener( 'visible', scrollFirstHighlightIntoView ); - } - slide.addEventListener( 'visible', scrollFirstHighlightIntoView ); - } - - Plugin.highlightLines( block ); - - } - - }, - - /** - * Animates scrolling to the first highlighted line - * in the given code block. - */ - scrollHighlightedLineIntoView: function( block, scrollState, skipAnimation ) { - - cancelAnimationFrame( scrollState.animationFrameID ); - - // Match the scroll position of the currently visible - // code block - if( scrollState.currentBlock ) { - block.scrollTop = scrollState.currentBlock.scrollTop; - } - - // Remember the current code block so that we can match - // its scroll position when showing/hiding fragments - scrollState.currentBlock = block; - - var highlightBounds = this.getHighlightedLineBounds( block ) - var viewportHeight = block.offsetHeight; - - // Subtract padding from the viewport height - var blockStyles = getComputedStyle( block ); - viewportHeight -= parseInt( blockStyles.paddingTop ) + parseInt( blockStyles.paddingBottom ); - - // Scroll position which centers all highlights - var startTop = block.scrollTop; - var targetTop = highlightBounds.top + ( Math.min( highlightBounds.bottom - highlightBounds.top, viewportHeight ) - viewportHeight ) / 2; - - // Account for offsets in position applied to the - // <table> that holds our lines of code - var lineTable = block.querySelector( '.hljs-ln' ); - if( lineTable ) targetTop += lineTable.offsetTop - parseInt( blockStyles.paddingTop ); - - // Make sure the scroll target is within bounds - targetTop = Math.max( Math.min( targetTop, block.scrollHeight - viewportHeight ), 0 ); - - if( skipAnimation === true || startTop === targetTop ) { - block.scrollTop = targetTop; - } - else { - - // Don't attempt to scroll if there is no overflow - if( block.scrollHeight <= viewportHeight ) return; - - var time = 0; - var animate = function() { - time = Math.min( time + 0.02, 1 ); - - // Update our eased scroll position - block.scrollTop = startTop + ( targetTop - startTop ) * Plugin.easeInOutQuart( time ); - - // Keep animating unless we've reached the end - if( time < 1 ) { - scrollState.animationFrameID = requestAnimationFrame( animate ); - } - }; - - animate(); - - } - - }, - - /** - * The easing function used when scrolling. - */ - easeInOutQuart: function( t ) { - - // easeInOutQuart - return t<.5 ? 8*t*t*t*t : 1-8*(--t)*t*t*t; - - }, - - getHighlightedLineBounds: function( block ) { - - var highlightedLines = block.querySelectorAll( '.highlight-line' ); - if( highlightedLines.length === 0 ) { - return { top: 0, bottom: 0 }; - } - else { - var firstHighlight = highlightedLines[0]; - var lastHighlight = highlightedLines[ highlightedLines.length -1 ]; - - return { - top: firstHighlight.offsetTop, - bottom: lastHighlight.offsetTop + lastHighlight.offsetHeight - } - } - - }, - - /** - * Visually emphasize specific lines within a code block. - * This only works on blocks with line numbering turned on. - * - * @param {HTMLElement} block a <code> block - * @param {String} [linesToHighlight] The lines that should be - * highlighted in this format: - * "1" = highlights line 1 - * "2,5" = highlights lines 2 & 5 - * "2,5-7" = highlights lines 2, 5, 6 & 7 - */ - highlightLines: function( block, linesToHighlight ) { - - var highlightSteps = Plugin.deserializeHighlightSteps( linesToHighlight || block.getAttribute( 'data-line-numbers' ) ); - - if( highlightSteps.length ) { - - highlightSteps[0].forEach( function( highlight ) { - - var elementsToHighlight = []; - - // Highlight a range - if( typeof highlight.end === 'number' ) { - elementsToHighlight = [].slice.call( block.querySelectorAll( 'table tr:nth-child(n+'+highlight.start+'):nth-child(-n+'+highlight.end+')' ) ); - } - // Highlight a single line - else if( typeof highlight.start === 'number' ) { - elementsToHighlight = [].slice.call( block.querySelectorAll( 'table tr:nth-child('+highlight.start+')' ) ); - } - - if( elementsToHighlight.length ) { - elementsToHighlight.forEach( function( lineElement ) { - lineElement.classList.add( 'highlight-line' ); - } ); - - block.classList.add( 'has-highlights' ); - } - - } ); - - } - - }, - - /** - * Parses and formats a user-defined string of line - * numbers to highlight. - * - * @example - * Plugin.deserializeHighlightSteps( '1,2|3,5-10' ) - * // [ - * // [ { start: 1 }, { start: 2 } ], - * // [ { start: 3 }, { start: 5, end: 10 } ] - * // ] - */ - deserializeHighlightSteps: function( highlightSteps ) { - - // Remove whitespace - highlightSteps = highlightSteps.replace( /\s/g, '' ); - - // Divide up our line number groups - highlightSteps = highlightSteps.split( Plugin.HIGHLIGHT_STEP_DELIMITER ); - - return highlightSteps.map( function( highlights ) { - - return highlights.split( Plugin.HIGHLIGHT_LINE_DELIMITER ).map( function( highlight ) { - - // Parse valid line numbers - if( /^[\d-]+$/.test( highlight ) ) { - - highlight = highlight.split( Plugin.HIGHLIGHT_LINE_RANGE_DELIMITER ); - - var lineStart = parseInt( highlight[0], 10 ), - lineEnd = parseInt( highlight[1], 10 ); - - if( isNaN( lineEnd ) ) { - return { - start: lineStart - }; - } - else { - return { - start: lineStart, - end: lineEnd - }; - } - - } - // If no line numbers are provided, no code will be highlighted - else { - - return {}; - - } - - } ); - - } ); - - }, - - /** - * Serializes parsed line number data into a string so - * that we can store it in the DOM. - */ - serializeHighlightSteps: function( highlightSteps ) { - - return highlightSteps.map( function( highlights ) { - - return highlights.map( function( highlight ) { - - // Line range - if( typeof highlight.end === 'number' ) { - return highlight.start + Plugin.HIGHLIGHT_LINE_RANGE_DELIMITER + highlight.end; - } - // Single line - else if( typeof highlight.start === 'number' ) { - return highlight.start; - } - // All lines - else { - return ''; - } - - } ).join( Plugin.HIGHLIGHT_LINE_DELIMITER ); - - } ).join( Plugin.HIGHLIGHT_STEP_DELIMITER ); - - } - -} - -// Function to perform a better "data-trim" on code snippets -// Will slice an indentation amount on each line of the snippet (amount based on the line having the lowest indentation length) -function betterTrim(snippetEl) { - // Helper functions - function trimLeft(val) { - // Adapted from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim#Polyfill - return val.replace(/^[\s\uFEFF\xA0]+/g, ''); - } - function trimLineBreaks(input) { - var lines = input.split('\n'); - - // Trim line-breaks from the beginning - for (var i = 0; i < lines.length; i++) { - if (lines[i].trim() === '') { - lines.splice(i--, 1); - } else break; - } - - // Trim line-breaks from the end - for (var i = lines.length-1; i >= 0; i--) { - if (lines[i].trim() === '') { - lines.splice(i, 1); - } else break; - } - - return lines.join('\n'); - } - - // Main function for betterTrim() - return (function(snippetEl) { - var content = trimLineBreaks(snippetEl.innerHTML); - var lines = content.split('\n'); - // Calculate the minimum amount to remove on each line start of the snippet (can be 0) - var pad = lines.reduce(function(acc, line) { - if (line.length > 0 && trimLeft(line).length > 0 && acc > line.length - trimLeft(line).length) { - return line.length - trimLeft(line).length; - } - return acc; - }, Number.POSITIVE_INFINITY); - // Slice each line with this amount - return lines.map(function(line, index) { - return line.slice(pad); - }) - .join('\n'); - })(snippetEl); -} - -export default () => Plugin; |