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    The Lorenz Equations

    + + \[\begin{aligned} + \dot{x} & = \sigma(y-x) \\ + \dot{y} & = \rho x - y - xz \\ + \dot{z} & = -\beta z + xy + \end{aligned} \] +
    + + + ' ); + + var leadingWs = text.match( /^\n?(\s*)/ )[1].length, + leadingTabs = text.match( /^\n?(\t*)/ )[1].length; + + if( leadingTabs > 0 ) { + text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' ); + } + else if( leadingWs > 1 ) { + text = text.replace( new RegExp('\\n? {' + leadingWs + '}', 'g'), '\n' ); } - return processSlides( deck.getRevealElement() ).then( convertSlides ); + return text; - }, - - // TODO: Do these belong in the API? - processSlides: processSlides, - convertSlides: convertSlides, - slidify: slidify, - marked: marked - -}; - -export default () => Plugin; - -var DEFAULT_SLIDE_SEPARATOR = '^\r?\n---\r?\n$', - DEFAULT_NOTES_SEPARATOR = 'notes?:', - DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = '\\\.element\\\s*?(.+?)$', - DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR = '\\\.slide:\\\s*?(\\\S.+?)$'; - -var SCRIPT_END_PLACEHOLDER = '__SCRIPT_END__'; - - -/** - * Retrieves the markdown contents of a slide section - * element. Normalizes leading tabs/whitespace. - */ -function getMarkdownFromSlide( section ) { - - // look for a ' ); - - var leadingWs = text.match( /^\n?(\s*)/ )[1].length, - leadingTabs = text.match( /^\n?(\t*)/ )[1].length; - - if( leadingTabs > 0 ) { - text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' ); - } - else if( leadingWs > 1 ) { - text = text.replace( new RegExp('\\n? {' + leadingWs + '}', 'g'), '\n' ); } - return text; + /** + * Given a markdown slide section element, this will + * return all arguments that aren't related to markdown + * parsing. Used to forward any other user-defined arguments + * to the output markdown slide. + */ + function getForwardedAttributes( section ) { -} + var attributes = section.attributes; + var result = []; -/** - * Given a markdown slide section element, this will - * return all arguments that aren't related to markdown - * parsing. Used to forward any other user-defined arguments - * to the output markdown slide. - */ -function getForwardedAttributes( section ) { + for( var i = 0, len = attributes.length; i < len; i++ ) { + var name = attributes[i].name, + value = attributes[i].value; - var attributes = section.attributes; - var result = []; - - for( var i = 0, len = attributes.length; i < len; i++ ) { - var name = attributes[i].name, - value = attributes[i].value; - - // disregard attributes that are used for markdown loading/parsing - if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue; - - if( value ) { - result.push( name + '="' + value + '"' ); - } - else { - result.push( name ); - } - } - - return result.join( ' ' ); - -} - -/** - * Inspects the given options and fills out default - * values for what's not defined. - */ -function getSlidifyOptions( options ) { - - options = options || {}; - options.separator = options.separator || DEFAULT_SLIDE_SEPARATOR; - options.notesSeparator = options.notesSeparator || DEFAULT_NOTES_SEPARATOR; - options.attributes = options.attributes || ''; - - return options; - -} - -/** - * Helper function for constructing a markdown slide. - */ -function createMarkdownSlide( content, options ) { - - options = getSlidifyOptions( options ); - - var notesMatch = content.split( new RegExp( options.notesSeparator, 'mgi' ) ); - - if( notesMatch.length === 2 ) { - content = notesMatch[0] + ''; - } - - // prevent script end tags in the content from interfering - // with parsing - content = content.replace( /<\/script>/g, SCRIPT_END_PLACEHOLDER ); - - return ''; - -} - -/** - * Parses a data string into multiple slides based - * on the passed in separator arguments. - */ -function slidify( markdown, options ) { - - options = getSlidifyOptions( options ); - - var separatorRegex = new RegExp( options.separator + ( options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ), - horizontalSeparatorRegex = new RegExp( options.separator ); - - var matches, - lastIndex = 0, - isHorizontal, - wasHorizontal = true, - content, - sectionStack = []; - - // iterate until all blocks between separators are stacked up - while( matches = separatorRegex.exec( markdown ) ) { - var notes = null; - - // determine direction (horizontal by default) - isHorizontal = horizontalSeparatorRegex.test( matches[0] ); - - if( !isHorizontal && wasHorizontal ) { - // create vertical stack - sectionStack.push( [] ); - } - - // pluck slide content from markdown input - content = markdown.substring( lastIndex, matches.index ); - - if( isHorizontal && wasHorizontal ) { - // add to horizontal stack - sectionStack.push( content ); - } - else { - // add to vertical stack - sectionStack[sectionStack.length-1].push( content ); - } - - lastIndex = separatorRegex.lastIndex; - wasHorizontal = isHorizontal; - } - - // add the remaining slide - ( wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) ); - - var markdownSections = ''; - - // flatten the hierarchical stack, and insert
    tags - for( var i = 0, len = sectionStack.length; i < len; i++ ) { - // vertical - if( sectionStack[i] instanceof Array ) { - markdownSections += '
    '; - - sectionStack[i].forEach( function( child ) { - markdownSections += '
    ' + createMarkdownSlide( child, options ) + '
    '; - } ); - - markdownSections += '
    '; - } - else { - markdownSections += '
    ' + createMarkdownSlide( sectionStack[i], options ) + '
    '; - } - } - - return markdownSections; - -} - -/** - * Parses any current data-markdown slides, splits - * multi-slide markdown into separate sections and - * handles loading of external markdown. - */ -function processSlides( scope ) { - - return new Promise( function( resolve ) { - - var externalPromises = []; - - [].slice.call( scope.querySelectorAll( '[data-markdown]:not([data-markdown-parsed])') ).forEach( function( section, i ) { - - if( section.getAttribute( 'data-markdown' ).length ) { - - externalPromises.push( loadExternalMarkdown( section ).then( - - // Finished loading external file - function( xhr, url ) { - section.outerHTML = slidify( xhr.responseText, { - separator: section.getAttribute( 'data-separator' ), - verticalSeparator: section.getAttribute( 'data-separator-vertical' ), - notesSeparator: section.getAttribute( 'data-separator-notes' ), - attributes: getForwardedAttributes( section ) - }); - }, - - // Failed to load markdown - function( xhr, url ) { - section.outerHTML = '
    ' + - 'ERROR: The attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' + - 'Check your browser\'s JavaScript console for more details.' + - '

    Remember that you need to serve the presentation HTML from a HTTP server.

    ' + - '
    '; - } - - ) ); - - } - else if( section.getAttribute( 'data-separator' ) || section.getAttribute( 'data-separator-vertical' ) || section.getAttribute( 'data-separator-notes' ) ) { - - section.outerHTML = slidify( getMarkdownFromSlide( section ), { - separator: section.getAttribute( 'data-separator' ), - verticalSeparator: section.getAttribute( 'data-separator-vertical' ), - notesSeparator: section.getAttribute( 'data-separator-notes' ), - attributes: getForwardedAttributes( section ) - }); + // disregard attributes that are used for markdown loading/parsing + if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue; + if( value ) { + result.push( name + '="' + value + '"' ); } else { - section.innerHTML = createMarkdownSlide( getMarkdownFromSlide( section ) ); + result.push( name ); } - - }); - - Promise.all( externalPromises ).then( resolve ); - - } ); - -} - -function loadExternalMarkdown( section ) { - - return new Promise( function( resolve, reject ) { - - var xhr = new XMLHttpRequest(), - url = section.getAttribute( 'data-markdown' ); - - var datacharset = section.getAttribute( 'data-charset' ); - - // see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes - if( datacharset != null && datacharset != '' ) { - xhr.overrideMimeType( 'text/html; charset=' + datacharset ); } - xhr.onreadystatechange = function( section, xhr ) { - if( xhr.readyState === 4 ) { - // file protocol yields status code 0 (useful for local debug, mobile applications etc.) - if ( ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 0 ) { + return result.join( ' ' ); - resolve( xhr, url ); + } + + /** + * Inspects the given options and fills out default + * values for what's not defined. + */ + function getSlidifyOptions( options ) { + + options = options || {}; + options.separator = options.separator || DEFAULT_SLIDE_SEPARATOR; + options.notesSeparator = options.notesSeparator || DEFAULT_NOTES_SEPARATOR; + options.attributes = options.attributes || ''; + + return options; + + } + + /** + * Helper function for constructing a markdown slide. + */ + function createMarkdownSlide( content, options ) { + + options = getSlidifyOptions( options ); + + var notesMatch = content.split( new RegExp( options.notesSeparator, 'mgi' ) ); + + if( notesMatch.length === 2 ) { + content = notesMatch[0] + ''; + } + + // prevent script end tags in the content from interfering + // with parsing + content = content.replace( /<\/script>/g, SCRIPT_END_PLACEHOLDER ); + + return ''; + + } + + /** + * Parses a data string into multiple slides based + * on the passed in separator arguments. + */ + function slidify( markdown, options ) { + + options = getSlidifyOptions( options ); + + var separatorRegex = new RegExp( options.separator + ( options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ), + horizontalSeparatorRegex = new RegExp( options.separator ); + + var matches, + lastIndex = 0, + isHorizontal, + wasHorizontal = true, + content, + sectionStack = []; + + // iterate until all blocks between separators are stacked up + while( matches = separatorRegex.exec( markdown ) ) { + var notes = null; + + // determine direction (horizontal by default) + isHorizontal = horizontalSeparatorRegex.test( matches[0] ); + + if( !isHorizontal && wasHorizontal ) { + // create vertical stack + sectionStack.push( [] ); + } + + // pluck slide content from markdown input + content = markdown.substring( lastIndex, matches.index ); + + if( isHorizontal && wasHorizontal ) { + // add to horizontal stack + sectionStack.push( content ); + } + else { + // add to vertical stack + sectionStack[sectionStack.length-1].push( content ); + } + + lastIndex = separatorRegex.lastIndex; + wasHorizontal = isHorizontal; + } + + // add the remaining slide + ( wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) ); + + var markdownSections = ''; + + // flatten the hierarchical stack, and insert
    tags + for( var i = 0, len = sectionStack.length; i < len; i++ ) { + // vertical + if( sectionStack[i] instanceof Array ) { + markdownSections += '
    '; + + sectionStack[i].forEach( function( child ) { + markdownSections += '
    ' + createMarkdownSlide( child, options ) + '
    '; + } ); + + markdownSections += '
    '; + } + else { + markdownSections += '
    ' + createMarkdownSlide( sectionStack[i], options ) + '
    '; + } + } + + return markdownSections; + + } + + /** + * Parses any current data-markdown slides, splits + * multi-slide markdown into separate sections and + * handles loading of external markdown. + */ + function processSlides( scope ) { + + return new Promise( function( resolve ) { + + var externalPromises = []; + + [].slice.call( scope.querySelectorAll( '[data-markdown]:not([data-markdown-parsed])') ).forEach( function( section, i ) { + + if( section.getAttribute( 'data-markdown' ).length ) { + + externalPromises.push( loadExternalMarkdown( section ).then( + + // Finished loading external file + function( xhr, url ) { + section.outerHTML = slidify( xhr.responseText, { + separator: section.getAttribute( 'data-separator' ), + verticalSeparator: section.getAttribute( 'data-separator-vertical' ), + notesSeparator: section.getAttribute( 'data-separator-notes' ), + attributes: getForwardedAttributes( section ) + }); + }, + + // Failed to load markdown + function( xhr, url ) { + section.outerHTML = '
    ' + + 'ERROR: The attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' + + 'Check your browser\'s JavaScript console for more details.' + + '

    Remember that you need to serve the presentation HTML from a HTTP server.

    ' + + '
    '; + } + + ) ); + + } + else if( section.getAttribute( 'data-separator' ) || section.getAttribute( 'data-separator-vertical' ) || section.getAttribute( 'data-separator-notes' ) ) { + + section.outerHTML = slidify( getMarkdownFromSlide( section ), { + separator: section.getAttribute( 'data-separator' ), + verticalSeparator: section.getAttribute( 'data-separator-vertical' ), + notesSeparator: section.getAttribute( 'data-separator-notes' ), + attributes: getForwardedAttributes( section ) + }); } else { - - reject( xhr, url ); - + section.innerHTML = createMarkdownSlide( getMarkdownFromSlide( section ) ); } - } - }.bind( this, section, xhr ); - xhr.open( 'GET', url, true ); + }); - try { - xhr.send(); - } - catch ( e ) { - console.warn( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e ); - resolve( xhr, url ); - } + Promise.all( externalPromises ).then( resolve ); - } ); + } ); -} - -/** - * Check if a node value has the attributes pattern. - * If yes, extract it and add that value as one or several attributes - * to the target element. - * - * You need Cache Killer on Chrome to see the effect on any FOM transformation - * directly on refresh (F5) - * http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277 - */ -function addAttributeInElement( node, elementTarget, separator ) { - - var mardownClassesInElementsRegex = new RegExp( separator, 'mg' ); - var mardownClassRegex = new RegExp( "([^\"= ]+?)=\"([^\"]+?)\"|(data-[^\"= ]+?)(?=[\" ])", 'mg' ); - var nodeValue = node.nodeValue; - var matches, - matchesClass; - if( matches = mardownClassesInElementsRegex.exec( nodeValue ) ) { - - var classes = matches[1]; - nodeValue = nodeValue.substring( 0, matches.index ) + nodeValue.substring( mardownClassesInElementsRegex.lastIndex ); - node.nodeValue = nodeValue; - while( matchesClass = mardownClassRegex.exec( classes ) ) { - if( matchesClass[2] ) { - elementTarget.setAttribute( matchesClass[1], matchesClass[2] ); - } else { - elementTarget.setAttribute( matchesClass[3], "" ); - } - } - return true; } - return false; -} -/** - * Add attributes to the parent element of a text node, - * or the element of an attribute node. - */ -function addAttributes( section, element, previousElement, separatorElementAttributes, separatorSectionAttributes ) { + function loadExternalMarkdown( section ) { + + return new Promise( function( resolve, reject ) { + + var xhr = new XMLHttpRequest(), + url = section.getAttribute( 'data-markdown' ); + + var datacharset = section.getAttribute( 'data-charset' ); + + // see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes + if( datacharset != null && datacharset != '' ) { + xhr.overrideMimeType( 'text/html; charset=' + datacharset ); + } + + xhr.onreadystatechange = function( section, xhr ) { + if( xhr.readyState === 4 ) { + // file protocol yields status code 0 (useful for local debug, mobile applications etc.) + if ( ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 0 ) { + + resolve( xhr, url ); - if ( element != null && element.childNodes != undefined && element.childNodes.length > 0 ) { - var previousParentElement = element; - for( var i = 0; i < element.childNodes.length; i++ ) { - var childElement = element.childNodes[i]; - if ( i > 0 ) { - var j = i - 1; - while ( j >= 0 ) { - var aPreviousChildElement = element.childNodes[j]; - if ( typeof aPreviousChildElement.setAttribute == 'function' && aPreviousChildElement.tagName != "BR" ) { - previousParentElement = aPreviousChildElement; - break; } - j = j - 1; + else { + + reject( xhr, url ); + + } + } + }.bind( this, section, xhr ); + + xhr.open( 'GET', url, true ); + + try { + xhr.send(); + } + catch ( e ) { + console.warn( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e ); + resolve( xhr, url ); + } + + } ); + + } + + /** + * Check if a node value has the attributes pattern. + * If yes, extract it and add that value as one or several attributes + * to the target element. + * + * You need Cache Killer on Chrome to see the effect on any FOM transformation + * directly on refresh (F5) + * http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277 + */ + function addAttributeInElement( node, elementTarget, separator ) { + + var mardownClassesInElementsRegex = new RegExp( separator, 'mg' ); + var mardownClassRegex = new RegExp( "([^\"= ]+?)=\"([^\"]+?)\"|(data-[^\"= ]+?)(?=[\" ])", 'mg' ); + var nodeValue = node.nodeValue; + var matches, + matchesClass; + if( matches = mardownClassesInElementsRegex.exec( nodeValue ) ) { + + var classes = matches[1]; + nodeValue = nodeValue.substring( 0, matches.index ) + nodeValue.substring( mardownClassesInElementsRegex.lastIndex ); + node.nodeValue = nodeValue; + while( matchesClass = mardownClassRegex.exec( classes ) ) { + if( matchesClass[2] ) { + elementTarget.setAttribute( matchesClass[1], matchesClass[2] ); + } else { + elementTarget.setAttribute( matchesClass[3], "" ); } } - var parentSection = section; - if( childElement.nodeName == "section" ) { - parentSection = childElement ; - previousParentElement = childElement ; + return true; + } + return false; + } + + /** + * Add attributes to the parent element of a text node, + * or the element of an attribute node. + */ + function addAttributes( section, element, previousElement, separatorElementAttributes, separatorSectionAttributes ) { + + if ( element != null && element.childNodes != undefined && element.childNodes.length > 0 ) { + var previousParentElement = element; + for( var i = 0; i < element.childNodes.length; i++ ) { + var childElement = element.childNodes[i]; + if ( i > 0 ) { + var j = i - 1; + while ( j >= 0 ) { + var aPreviousChildElement = element.childNodes[j]; + if ( typeof aPreviousChildElement.setAttribute == 'function' && aPreviousChildElement.tagName != "BR" ) { + previousParentElement = aPreviousChildElement; + break; + } + j = j - 1; + } + } + var parentSection = section; + if( childElement.nodeName == "section" ) { + parentSection = childElement ; + previousParentElement = childElement ; + } + if ( typeof childElement.setAttribute == 'function' || childElement.nodeType == Node.COMMENT_NODE ) { + addAttributes( parentSection, childElement, previousParentElement, separatorElementAttributes, separatorSectionAttributes ); + } } - if ( typeof childElement.setAttribute == 'function' || childElement.nodeType == Node.COMMENT_NODE ) { - addAttributes( parentSection, childElement, previousParentElement, separatorElementAttributes, separatorSectionAttributes ); + } + + if ( element.nodeType == Node.COMMENT_NODE ) { + if ( addAttributeInElement( element, previousElement, separatorElementAttributes ) == false ) { + addAttributeInElement( element, section, separatorSectionAttributes ); } } } - if ( element.nodeType == Node.COMMENT_NODE ) { - if ( addAttributeInElement( element, previousElement, separatorElementAttributes ) == false ) { - addAttributeInElement( element, section, separatorSectionAttributes ); - } + /** + * Converts any current data-markdown slides in the + * DOM to HTML. + */ + function convertSlides() { + + var sections = deck.getRevealElement().querySelectorAll( '[data-markdown]:not([data-markdown-parsed])'); + + [].slice.call( sections ).forEach( function( section ) { + + section.setAttribute( 'data-markdown-parsed', true ) + + var notes = section.querySelector( 'aside.notes' ); + var markdown = getMarkdownFromSlide( section ); + + section.innerHTML = marked( markdown ); + addAttributes( section, section, null, section.getAttribute( 'data-element-attributes' ) || + section.parentNode.getAttribute( 'data-element-attributes' ) || + DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR, + section.getAttribute( 'data-attributes' ) || + section.parentNode.getAttribute( 'data-attributes' ) || + DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR); + + // If there were notes, we need to re-add them after + // having overwritten the section's HTML + if( notes ) { + section.appendChild( notes ); + } + + } ); + + return Promise.resolve(); + } -} -/** - * Converts any current data-markdown slides in the - * DOM to HTML. - */ -function convertSlides() { + return { + id: 'markdown', - var sections = document.querySelectorAll( '[data-markdown]:not([data-markdown-parsed])'); + /** + * Starts processing and converting Markdown within the + * current reveal.js deck. + */ + init: function( reveal ) { - [].slice.call( sections ).forEach( function( section ) { + deck = reveal; - section.setAttribute( 'data-markdown-parsed', true ) + // This should no longer be needed, as long as the highlight.js + // plugin is included after the markdown plugin + // if( typeof window.hljs !== 'undefined' ) { + // marked.setOptions({ + // highlight: function( code, lang ) { + // return window.hljs.highlightAuto( code, lang ? [lang] : null ).value; + // } + // }); + // } - var notes = section.querySelector( 'aside.notes' ); - var markdown = getMarkdownFromSlide( section ); + // marked can be configured via reveal.js config options + var options = deck.getConfig().markdown; + if( options ) { + marked.setOptions( options ); + } - section.innerHTML = marked( markdown ); - addAttributes( section, section, null, section.getAttribute( 'data-element-attributes' ) || - section.parentNode.getAttribute( 'data-element-attributes' ) || - DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR, - section.getAttribute( 'data-attributes' ) || - section.parentNode.getAttribute( 'data-attributes' ) || - DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR); + return processSlides( deck.getRevealElement() ).then( convertSlides ); - // If there were notes, we need to re-add them after - // having overwritten the section's HTML - if( notes ) { - section.appendChild( notes ); - } + }, - } ); + // TODO: Do these belong in the API? + processSlides: processSlides, + convertSlides: convertSlides, + slidify: slidify, + marked: marked + } - return Promise.resolve(); +}; -} +export default Plugin; diff --git a/plugin/math/math.js b/plugin/math/math.js index 25f50cb4..eaef379d 100755 --- a/plugin/math/math.js +++ b/plugin/math/math.js @@ -4,14 +4,12 @@ * * @author Hakim El Hattab */ -let Plugin = (function(){ +const Plugin = () => { - var options = Reveal.getConfig().math || {}; - var mathjax = options.mathjax || 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js'; - var config = options.config || 'TeX-AMS_HTML-full'; - var url = mathjax + '?config=' + config; + // The reveal.js instance this plugin is attached to + let deck; - var defaultOptions = { + let defaultOptions = { messageStyle: 'none', tex2jax: { inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ] ], @@ -20,25 +18,15 @@ let Plugin = (function(){ skipStartupTypeset: true }; - function defaults( options, defaultOptions ) { - - for ( var i in defaultOptions ) { - if ( !options.hasOwnProperty( i ) ) { - options[i] = defaultOptions[i]; - } - } - - } - function loadScript( url, callback ) { - var head = document.querySelector( 'head' ); - var script = document.createElement( 'script' ); + let head = document.querySelector( 'head' ); + let script = document.createElement( 'script' ); script.type = 'text/javascript'; script.src = url; // Wrapper for callback to make sure it only fires once - var finish = function() { + let finish = () => { if( typeof callback === 'function' ) { callback.call(); callback = null; @@ -48,7 +36,7 @@ let Plugin = (function(){ script.onload = finish; // IE - script.onreadystatechange = function() { + script.onreadystatechange = () => { if ( this.readyState === 'loaded' ) { finish(); } @@ -62,10 +50,19 @@ let Plugin = (function(){ return { id: 'math', - init: function( deck ) { + init: function( reveal ) { + + deck = reveal; + + let revealOptions = deck.getConfig().math || {}; + + let options = { ...defaultOptions, ...revealOptions }; + let mathjax = options.mathjax || 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js'; + let config = options.config || 'TeX-AMS_HTML-full'; + let url = mathjax + '?config=' + config; + + options.tex2jax = { ...defaultOptions.tex2jax, ...revealOptions.tex2jax }; - defaults( options, defaultOptions ); - defaults( options.tex2jax, defaultOptions.tex2jax ); options.mathjax = options.config = null; loadScript( url, function() { @@ -74,7 +71,7 @@ let Plugin = (function(){ // Typeset followed by an immediate reveal.js layout since // the typesetting process could affect slide height - MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub ] ); + MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub, deck.getRevealElement() ] ); MathJax.Hub.Queue( deck.layout ); // Reprocess equations in slides when they turn visible @@ -89,6 +86,6 @@ let Plugin = (function(){ } } -})(); +}; -export default () => Plugin; +export default Plugin; diff --git a/plugin/search/search.js b/plugin/search/search.js index cc39ef05..5d09ce6a 100644 --- a/plugin/search/search.js +++ b/plugin/search/search.js @@ -2,130 +2,89 @@ * Handles finding a text string anywhere in the slides and showing the next occurrence to the user * by navigatating to that slide and highlighting it. * - * By Jon Snyder , February 2013 + * @author Jon Snyder , February 2013 */ -var Plugin = (function() { +const Plugin = () => { - var matchedSlides; - var currentMatchedIndex; - var searchboxDirty; - var myHilitor; + // The reveal.js instance this plugin is attached to + let deck; -// Original JavaScript code by Chirp Internet: www.chirp.com.au -// Please acknowledge use of this code by including this header. -// 2/2013 jon: modified regex to display any match, not restricted to word boundaries. + let searchElement; + let searchButton; + let searchInput; -function Hilitor(id, tag) -{ + let matchedSlides; + let currentMatchedIndex; + let searchboxDirty; + let hilitor; - var targetNode = document.getElementById(id) || document.body; - var hiliteTag = tag || "EM"; - var skipTags = new RegExp("^(?:" + hiliteTag + "|SCRIPT|FORM)$"); - var colors = ["#ff6", "#a0ffff", "#9f9", "#f99", "#f6f"]; - var wordColor = []; - var colorIdx = 0; - var matchRegex = ""; - var matchingSlides = []; + function render() { - this.setRegex = function(input) - { - input = input.replace(/^[^\w]+|[^\w]+$/g, "").replace(/[^\w'-]+/g, "|"); - matchRegex = new RegExp("(" + input + ")","i"); - } + searchElement = document.createElement( 'div' ); + searchElement.classList.add( 'searchbox' ); + searchElement.style.position = 'absolute'; + searchElement.style.top = '10px'; + searchElement.style.right = '10px'; + searchElement.style.zIndex = 10; - this.getRegex = function() - { - return matchRegex.toString().replace(/^\/\\b\(|\)\\b\/i$/g, "").replace(/\|/g, " "); - } + //embedded base64 search icon Designed by Sketchdock - http://www.sketchdock.com/: + searchElement.innerHTML = ` + `; - // recursively apply word highlighting - this.hiliteWords = function(node) - { - if(node == undefined || !node) return; - if(!matchRegex) return; - if(skipTags.test(node.nodeName)) return; + searchInput = searchElement.querySelector( '.searchinput' ); + searchInput.style.width = '240px'; + searchInput.style.fontSize = '14px'; + searchInput.style.padding = '4px 6px'; + searchInput.style.color = '#000'; + searchInput.style.background = '#fff'; + searchInput.style.borderRadius = '2px'; + searchInput.style.border = '0'; + searchInput.style.outline = '0'; + searchInput.style.boxShadow = '0 2px 18px rgba(0, 0, 0, 0.2)'; + searchInput.style['-webkit-appearance'] = 'none'; - if(node.hasChildNodes()) { - for(var i=0; i < node.childNodes.length; i++) - this.hiliteWords(node.childNodes[i]); - } - if(node.nodeType == 3) { // NODE_TEXT - if((nv = node.nodeValue) && (regs = matchRegex.exec(nv))) { - //find the slide's section element and save it in our list of matching slides - var secnode = node; - while (secnode != null && secnode.nodeName != 'SECTION') { - secnode = secnode.parentNode; - } + deck.getRevealElement().appendChild( searchElement ); - var slideIndex = Reveal.getIndices(secnode); - var slidelen = matchingSlides.length; - var alreadyAdded = false; - for (var i=0; i < slidelen; i++) { - if ( (matchingSlides[i].h === slideIndex.h) && (matchingSlides[i].v === slideIndex.v) ) { - alreadyAdded = true; - } - } - if (! alreadyAdded) { - matchingSlides.push(slideIndex); - } + // searchButton.addEventListener( 'click', function(event) { + // doSearch(); + // }, false ); - if(!wordColor[regs[0].toLowerCase()]) { - wordColor[regs[0].toLowerCase()] = colors[colorIdx++ % colors.length]; - } - - var match = document.createElement(hiliteTag); - match.appendChild(document.createTextNode(regs[0])); - match.style.backgroundColor = wordColor[regs[0].toLowerCase()]; - match.style.fontStyle = "inherit"; - match.style.color = "#000"; - - var after = node.splitText(regs.index); - after.nodeValue = after.nodeValue.substring(regs[0].length); - node.parentNode.insertBefore(match, after); + searchInput.addEventListener( 'keyup', function( event ) { + switch (event.keyCode) { + case 13: + event.preventDefault(); + doSearch(); + searchboxDirty = false; + break; + default: + searchboxDirty = true; } - } - }; + }, false ); - // remove highlighting - this.remove = function() - { - var arr = document.getElementsByTagName(hiliteTag); - while(arr.length && (el = arr[0])) { - el.parentNode.replaceChild(el.firstChild, el); - } - }; + closeSearch(); - // start highlighting at target node - this.apply = function(input) - { - if(input == undefined || !input) return; - this.remove(); - this.setRegex(input); - this.hiliteWords(targetNode); - return matchingSlides; - }; - -} + } function openSearch() { - //ensure the search term input dialog is visible and has focus: - var inputboxdiv = document.getElementById("searchinputdiv"); - var inputbox = document.getElementById("searchinput"); - inputboxdiv.style.display = "inline"; - inputbox.focus(); - inputbox.select(); + if( !searchElement ) render(); + + searchElement.style.display = 'inline'; + searchInput.focus(); + searchInput.select(); } function closeSearch() { - var inputboxdiv = document.getElementById("searchinputdiv"); - inputboxdiv.style.display = "none"; - if(myHilitor) myHilitor.remove(); + if( !searchElement ) render(); + + searchElement.style.display = 'none'; + if(hilitor) hilitor.remove(); } function toggleSearch() { - var inputboxdiv = document.getElementById("searchinputdiv"); - if (inputboxdiv.style.display !== "inline") { + if( !searchElement ) render(); + + if (searchElement.style.display !== 'inline') { openSearch(); } else { @@ -136,16 +95,16 @@ function Hilitor(id, tag) function doSearch() { //if there's been a change in the search term, perform a new search: if (searchboxDirty) { - var searchstring = document.getElementById("searchinput").value; + var searchstring = searchInput.value; if (searchstring === '') { - if(myHilitor) myHilitor.remove(); + if(hilitor) hilitor.remove(); matchedSlides = null; } else { //find the keyword amongst the slides - myHilitor = new Hilitor("slidecontent"); - matchedSlides = myHilitor.apply(searchstring); + hilitor = new Hilitor("slidecontent"); + matchedSlides = hilitor.apply(searchstring); currentMatchedIndex = 0; } } @@ -156,66 +115,129 @@ function Hilitor(id, tag) currentMatchedIndex = 0; } if (matchedSlides.length > currentMatchedIndex) { - Reveal.slide(matchedSlides[currentMatchedIndex].h, matchedSlides[currentMatchedIndex].v); + deck.slide(matchedSlides[currentMatchedIndex].h, matchedSlides[currentMatchedIndex].v); currentMatchedIndex++; } } } - var dom = {}; - dom.wrapper = document.querySelector( '.reveal' ); + // Original JavaScript code by Chirp Internet: www.chirp.com.au + // Please acknowledge use of this code by including this header. + // 2/2013 jon: modified regex to display any match, not restricted to word boundaries. + function Hilitor(id, tag) { + + var targetNode = document.getElementById(id) || document.body; + var hiliteTag = tag || "EM"; + var skipTags = new RegExp("^(?:" + hiliteTag + "|SCRIPT|FORM)$"); + var colors = ["#ff6", "#a0ffff", "#9f9", "#f99", "#f6f"]; + var wordColor = []; + var colorIdx = 0; + var matchRegex = ""; + var matchingSlides = []; + + this.setRegex = function(input) + { + input = input.replace(/^[^\w]+|[^\w]+$/g, "").replace(/[^\w'-]+/g, "|"); + matchRegex = new RegExp("(" + input + ")","i"); + } + + this.getRegex = function() + { + return matchRegex.toString().replace(/^\/\\b\(|\)\\b\/i$/g, "").replace(/\|/g, " "); + } + + // recursively apply word highlighting + this.hiliteWords = function(node) + { + if(node == undefined || !node) return; + if(!matchRegex) return; + if(skipTags.test(node.nodeName)) return; + + if(node.hasChildNodes()) { + for(var i=0; i < node.childNodes.length; i++) + this.hiliteWords(node.childNodes[i]); + } + if(node.nodeType == 3) { // NODE_TEXT + var nv, regs; + if((nv = node.nodeValue) && (regs = matchRegex.exec(nv))) { + //find the slide's section element and save it in our list of matching slides + var secnode = node; + while (secnode != null && secnode.nodeName != 'SECTION') { + secnode = secnode.parentNode; + } + + var slideIndex = deck.getIndices(secnode); + var slidelen = matchingSlides.length; + var alreadyAdded = false; + for (var i=0; i < slidelen; i++) { + if ( (matchingSlides[i].h === slideIndex.h) && (matchingSlides[i].v === slideIndex.v) ) { + alreadyAdded = true; + } + } + if (! alreadyAdded) { + matchingSlides.push(slideIndex); + } + + if(!wordColor[regs[0].toLowerCase()]) { + wordColor[regs[0].toLowerCase()] = colors[colorIdx++ % colors.length]; + } + + var match = document.createElement(hiliteTag); + match.appendChild(document.createTextNode(regs[0])); + match.style.backgroundColor = wordColor[regs[0].toLowerCase()]; + match.style.fontStyle = "inherit"; + match.style.color = "#000"; + + var after = node.splitText(regs.index); + after.nodeValue = after.nodeValue.substring(regs[0].length); + node.parentNode.insertBefore(match, after); + } + } + }; + + // remove highlighting + this.remove = function() + { + var arr = document.getElementsByTagName(hiliteTag); + var el; + while(arr.length && (el = arr[0])) { + el.parentNode.replaceChild(el.firstChild, el); + } + }; + + // start highlighting at target node + this.apply = function(input) + { + if(input == undefined || !input) return; + this.remove(); + this.setRegex(input); + this.hiliteWords(targetNode); + return matchingSlides; + }; - if( !dom.wrapper.querySelector( '.searchbox' ) ) { - var searchElement = document.createElement( 'div' ); - searchElement.id = "searchinputdiv"; - searchElement.classList.add( 'searchdiv' ); - searchElement.style.position = 'absolute'; - searchElement.style.top = '10px'; - searchElement.style.right = '10px'; - searchElement.style.zIndex = 10; - //embedded base64 search icon Designed by Sketchdock - http://www.sketchdock.com/: - searchElement.innerHTML = ''; - dom.wrapper.appendChild( searchElement ); } - document.getElementById( 'searchbutton' ).addEventListener( 'click', function(event) { - doSearch(); - }, false ); - - document.getElementById( 'searchinput' ).addEventListener( 'keyup', function( event ) { - switch (event.keyCode) { - case 13: - event.preventDefault(); - doSearch(); - searchboxDirty = false; - break; - default: - searchboxDirty = true; - } - }, false ); - - document.addEventListener( 'keydown', function( event ) { - if( event.key == "F" && (event.ctrlKey || event.metaKey) ) { //Control+Shift+f - event.preventDefault(); - toggleSearch(); - } - }, false ); - - closeSearch(); - return { id: 'search', init: reveal => { - reveal.registerKeyboardShortcut( 'CTRL + Shift + F', 'Search' ); + deck = reveal; + deck.registerKeyboardShortcut( 'CTRL + Shift + F', 'Search' ); + + document.addEventListener( 'keydown', function( event ) { + if( event.key == "F" && (event.ctrlKey || event.metaKey) ) { //Control+Shift+f + event.preventDefault(); + toggleSearch(); + } + }, false ); }, open: openSearch } -})(); +}; -export default () => Plugin; \ No newline at end of file +export default Plugin; \ No newline at end of file