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@@ -6,11 +6,7 @@
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throw 'The reveal.js Markdown plugin requires Showdown to be loaded';
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}
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- var sections = document.querySelectorAll( '[data-markdown]' );
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-
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- for( var i = 0, len = sections.length; i < len; i++ ) {
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- var section = sections[i];
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- var notes = section.querySelector( 'aside.notes' );
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+ var stripLeadingWhitespace = function(section) {
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var template = section.querySelector( 'script' );
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@@ -27,11 +23,125 @@
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text = text.replace( new RegExp('\\n? {' + leadingWs + '}','g'), '\n' );
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}
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- section.innerHTML = (new Showdown.converter()).makeHtml(text);
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+ return text;
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+
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+ };
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+
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+ var slidifyMarkdown = function(markdown, separator, vertical) {
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+
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+ separator = separator || '^\n---\n$';
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+
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+ var reSeparator = new RegExp(separator + (vertical ? '|' + vertical : ''), 'mg'),
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+ reHorSeparator = new RegExp(separator),
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+ matches,
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+ lastIndex = 0,
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+ isHorizontal,
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+ wasHorizontal = true,
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+ content,
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+ sectionStack = [],
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+ markdownSections = '';
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+
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+ // iterate until all blocks between separators are stacked up
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+ while( matches = reSeparator.exec(markdown) ) {
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+
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+ // determine direction (horizontal by default)
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+ isHorizontal = reHorSeparator.test(matches[0]);
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+
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+ if( !isHorizontal && wasHorizontal ) {
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+ // create vertical stack
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+ sectionStack.push([]);
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+ }
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+
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+ // pluck slide content from markdown input
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+ content = markdown.substring(lastIndex, matches.index);
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+
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+ if( isHorizontal && wasHorizontal ) {
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+ // add to horizontal stack
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+ sectionStack.push(content);
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+ } else {
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+ // add to vertical stack
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+ sectionStack[sectionStack.length-1].push(content);
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+ }
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+
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+ lastIndex = reSeparator.lastIndex;
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+ wasHorizontal = isHorizontal;
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+
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+ }
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+
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+ // add the remaining slide
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+ (wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1]).push(markdown.substring(lastIndex));
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+
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+ // flatten the hierarchical stack, and insert <section data-markdown> tags
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+ for( var k = 0, klen = sectionStack.length; k < klen; k++ ) {
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+ markdownSections += typeof sectionStack[k] === 'string'
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+ ? '<section data-markdown>' + sectionStack[k] + '</section>'
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+ : '<section><section data-markdown>' + sectionStack[k].join('</section><section data-markdown>') + '</section></section>';
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+ }
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+
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+ return markdownSections;
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+ };
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+
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+ var querySlidingMarkdown = function() {
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+
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+ var sections = document.querySelectorAll( '[data-markdown]'),
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+ section;
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+
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+ for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
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+
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+ section = sections[j];
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+
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+ if( section.getAttribute('data-markdown').length ) {
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+
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+ var xhr = new XMLHttpRequest(),
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+ url = section.getAttribute('data-markdown');
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+
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+ xhr.onreadystatechange = function () {
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+ if( xhr.readyState === 4 ) {
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+ section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute('data-separator'), section.getAttribute('data-vertical') );
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+ }
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+ };
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+
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+ xhr.open('GET', url, false);
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+ xhr.send();
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+
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+ } else if( section.getAttribute('data-separator') ) {
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+
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+ var markdown = stripLeadingWhitespace(section);
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+ section.outerHTML = slidifyMarkdown( markdown, section.getAttribute('data-separator'), section.getAttribute('data-vertical') );
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+
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+ }
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+ }
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+
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+ };
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+
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+ var queryMarkdownSlides = function() {
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+
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+ var sections = document.querySelectorAll( '[data-markdown]');
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+
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+ for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
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+
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+ makeHtml(sections[j]);
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+
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+ }
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+
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+ };
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+
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+ var makeHtml = function(section) {
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+
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+ var notes = section.querySelector( 'aside.notes' );
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+
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+ var markdown = stripLeadingWhitespace(section);
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+
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+ section.innerHTML = (new Showdown.converter()).makeHtml(markdown);
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if( notes ) {
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section.appendChild( notes );
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}
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- }
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-})();
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+ };
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+
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+ querySlidingMarkdown();
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+
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+ queryMarkdownSlides();
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+
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+})();
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Hakim El Hattab