' +
- '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 {
- section.innerHTML = createMarkdownSlide( getMarkdownFromSlide( section ) );
- }
-
- });
-
- Promise.all( externalPromises ).then( resolve );
-
- } );
-
- }
-
- function loadExternalMarkdown( section ) {
-
- return new Promise( function( resolve, reject ) {
-
- var xhr = new XMLHttpRequest(),
- url = section.getAttribute( 'data-markdown' );
-
- 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 );
-
- }
- else {
-
- reject( xhr, url );
-
- }
- }
- }.bind( this, section, xhr );
-
- xhr.open( 'GET', url, true );
-
- try {
- xhr.send();
- }
- catch ( e ) {
- alert( '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( "([^\"= ]+?)=\"([^\"=]+?)\"", 'mg' );
- var nodeValue = node.nodeValue;
- 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 ) ) {
- elementTarget.setAttribute( matchesClass[1], matchesClass[2] );
- }
- 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 ) {
- previousParentElement = element;
- for( var i = 0; i < element.childNodes.length; i++ ) {
- childElement = element.childNodes[i];
- if ( i > 0 ) {
- j = i - 1;
- while ( j >= 0 ) {
- aPreviousChildElement = element.childNodes[j];
- if ( typeof aPreviousChildElement.setAttribute == 'function' && aPreviousChildElement.tagName != "BR" ) {
- previousParentElement = aPreviousChildElement;
- break;
- }
- j = j - 1;
- }
- }
- 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 ( 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 = document.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();
-
- }
-
- // API
- var RevealMarkdown = {
-
- /**
- * Starts processing and converting Markdown within the
- * current reveal.js deck.
- *
- * @param {function} callback function to invoke once
- * we've finished loading and parsing Markdown
- */
- init: function( callback ) {
-
- if( typeof marked === 'undefined' ) {
- throw 'The reveal.js Markdown plugin requires marked to be loaded';
- }
-
- if( typeof hljs !== 'undefined' ) {
- marked.setOptions({
- highlight: function( code, lang ) {
- return hljs.highlightAuto( code, [lang] ).value;
- }
- });
- }
-
- // marked can be configured via reveal.js config options
- var options = Reveal.getConfig().markdown;
- if( options ) {
- marked.setOptions( options );
- }
-
- return processSlides().then( convertSlides );
-
- },
-
- // TODO: Do these belong in the API?
- processSlides: processSlides,
- convertSlides: convertSlides,
- slidify: slidify
-
- };
-
- // Register our plugin so that reveal.js will call our
- // plugin 'init' method as part of the initialization
- Reveal.registerPlugin( 'markdown', RevealMarkdown );
-
- return RevealMarkdown;
-
-}));
--
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