xobs/lca2020-pay-it-forward
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update markdown plugin formatting to match reveal.js core

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This commit is contained in:
Hakim El Hattab 2013-08-23 17:49:19 -04:00
parent f215528575
commit b968dfef15
1 changed files with 170 additions and 159 deletions
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81
plugin/markdown/markdown.js
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@ -6,23 +6,23 @@
throw 'The reveal.js Markdown plugin requires marked to be loaded'; throw 'The reveal.js Markdown plugin requires marked to be loaded';
} }
if (typeof hljs !== 'undefined') { if( typeof hljs !== 'undefined' ) {
marked.setOptions({ marked.setOptions({
highlight: function (lang, code) { highlight: function( lang, code ) {
return hljs.highlightAuto(lang, code).value; return hljs.highlightAuto( lang, code ).value;
} }
}); });
} }
var stripLeadingWhitespace = function(section) { var stripLeadingWhitespace = function( section ) {
var template = section.querySelector( 'script' ); var template = section.querySelector( 'script' );
// strip leading whitespace so it isn't evaluated as code // strip leading whitespace so it isn't evaluated as code
var text = ( template || section ).textContent; var text = ( template || section ).textContent;
var leadingWs = text.match(/^\n?(\s*)/)[1].length, var leadingWs = text.match( /^\n?(\s*)/ )[1].length,
leadingTabs = text.match(/^\n?(\t*)/)[1].length; leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
if( leadingTabs > 0 ) { if( leadingTabs > 0 ) {
text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' ); text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' );
@ -35,13 +35,20 @@
}; };
var twrap = function(el) { var twrap = function( el ) {
var content = el.content || el; var content = el.content || el;
content += el.asideContent ? ('<aside class="notes" data-markdown>' + el.asideContent + '</aside>') : '';
if( el.asideContent ) {
content += '<aside class="notes" data-markdown>' + el.asideContent + '</aside>';
}
return '<script type="text/template">' + content + '</script>'; return '<script type="text/template">' + content + '</script>';
}; };
var getForwardedAttributes = function(section) { var getForwardedAttributes = function( section ) {
var attributes = section.attributes; var attributes = section.attributes;
var result = []; var result = [];
@ -61,9 +68,10 @@
} }
return result.join( ' ' ); return result.join( ' ' );
}; };
var slidifyMarkdown = function(markdown, separator, vertical, notes, attributes) { var slidifyMarkdown = function( markdown, separator, vertical, notes, attributes ) {
separator = separator || '^\n---\n$'; separator = separator || '^\n---\n$';
notes = notes || 'note:'; notes = notes || 'note:';
@ -105,7 +113,7 @@
slide = { slide = {
content: content, content: content,
asideContent: asideContent || "" asideContent: asideContent || ''
}; };
if( isHorizontal && wasHorizontal ) { if( isHorizontal && wasHorizontal ) {
@ -126,9 +134,9 @@
// flatten the hierarchical stack, and insert <section data-markdown> tags // flatten the hierarchical stack, and insert <section data-markdown> tags
for( var k = 0, klen = sectionStack.length; k < klen; k++ ) { for( var k = 0, klen = sectionStack.length; k < klen; k++ ) {
// vertical // vertical
if( sectionStack[k].propertyIsEnumerable(length) && typeof sectionStack[k].splice === 'function' ) { if( sectionStack[k].propertyIsEnumerable( length ) && typeof sectionStack[k].splice === 'function' ) {
markdownSections += '<section '+ attributes +'>' + markdownSections += '<section '+ attributes +'>' +
'<section data-markdown>' + sectionStack[k].map(twrap).join('</section><section data-markdown>') + '</section>' + '<section data-markdown>' + sectionStack[k].map( twrap ).join( '</section><section data-markdown>' ) + '</section>' +
'</section>'; '</section>';
} else { } else {
markdownSections += '<section '+ attributes +' data-markdown>' + twrap( sectionStack[k] ) + '</section>'; markdownSections += '<section '+ attributes +' data-markdown>' + twrap( sectionStack[k] ) + '</section>';
@ -138,7 +146,7 @@
return markdownSections; return markdownSections;
}; };
var querySlidingMarkdown = function() { var queryExternalMarkdown = function() {
var sections = document.querySelectorAll( '[data-markdown]'), var sections = document.querySelectorAll( '[data-markdown]'),
section; section;
@ -147,22 +155,24 @@
section = sections[j]; section = sections[j];
if( section.getAttribute('data-markdown').length ) { if( section.getAttribute( 'data-markdown' ).length ) {
var xhr = new XMLHttpRequest(), var xhr = new XMLHttpRequest(),
url = section.getAttribute('data-markdown'); url = section.getAttribute( 'data-markdown' );
datacharset = section.getAttribute( 'data-charset' );
datacharset = section.getAttribute('data-charset');
// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes // see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
if (datacharset != null && datacharset != '') { if( datacharset != null && datacharset != '' ) {
xhr.overrideMimeType('text/html; charset=' + datacharset); xhr.overrideMimeType( 'text/html; charset=' + datacharset );
} }
xhr.onreadystatechange = function () { xhr.onreadystatechange = function() {
if( xhr.readyState === 4 ) { if( xhr.readyState === 4 ) {
if (xhr.status >= 200 && xhr.status < 300) { if ( xhr.status >= 200 && xhr.status < 300 ) {
section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) ); section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute( 'data-separator' ), section.getAttribute( 'data-vertical' ), section.getAttribute( 'data-notes' ), getForwardedAttributes( section ) );
} else { }
else {
section.outerHTML = '<section data-state="alert">ERROR: The attempt to fetch ' + url + ' failed with the HTTP status ' + xhr.status + section.outerHTML = '<section data-state="alert">ERROR: The attempt to fetch ' + url + ' failed with the HTTP status ' + xhr.status +
'. Check your browser\'s JavaScript console for more details.' + '. Check your browser\'s JavaScript console for more details.' +
'<p>Remember that you need to serve the presentation HTML from a HTTP server and the Markdown file must be there too.</p></section>'; '<p>Remember that you need to serve the presentation HTML from a HTTP server and the Markdown file must be there too.</p></section>';
@ -170,17 +180,19 @@
} }
}; };
xhr.open('GET', url, false); xhr.open( 'GET', url, false );
try { try {
xhr.send(); 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); 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 );
} }
} else if( section.getAttribute('data-separator') ) { } else if( section.getAttribute( 'data-separator' ) ) {
var markdown = stripLeadingWhitespace(section); var markdown = stripLeadingWhitespace( section );
section.outerHTML = slidifyMarkdown( markdown, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) ); section.outerHTML = slidifyMarkdown( markdown, section.getAttribute( 'data-separator' ), section.getAttribute( 'data-vertical' ), section.getAttribute( 'data-notes' ), getForwardedAttributes( section ) );
} }
} }
@ -193,19 +205,19 @@
for( var j = 0, jlen = sections.length; j < jlen; j++ ) { for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
makeHtml(sections[j]); makeHtml( sections[j] );
} }
}; };
var makeHtml = function(section) { var makeHtml = function( section ) {
var notes = section.querySelector( 'aside.notes' ); var notes = section.querySelector( 'aside.notes' );
var markdown = stripLeadingWhitespace(section); var markdown = stripLeadingWhitespace( section );
section.innerHTML = marked(markdown); section.innerHTML = marked( markdown );
if( notes ) { if( notes ) {
section.appendChild( notes ); section.appendChild( notes );
@ -213,8 +225,7 @@
}; };
querySlidingMarkdown(); queryExternalMarkdown();
queryMarkdownSlides(); queryMarkdownSlides();
})(); })();