' +
'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.
' +
'';
}
}
};
xhr.open( 'GET', url, false );
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 );
}
}
else if( section.getAttribute( 'data-separator' ) || section.getAttribute( 'data-vertical' ) || section.getAttribute( 'data-notes' ) ) {
section.outerHTML = slidify( getMarkdownFromSlide( section ), {
separator: section.getAttribute( 'data-separator' ),
verticalSeparator: section.getAttribute( 'data-vertical' ),
notesSeparator: section.getAttribute( 'data-notes' ),
attributes: getForwardedAttributes( section )
});
}
else {
section.innerHTML = createMarkdownSlide( getMarkdownFromSlide( section ) );
}
}
}
/**
* Check if a node value has the attributes pattern.
* If yes, extract it and add that value as one or several attributes
* the the terget 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] );
}
}
}
/**
* Add attributes to the parent element of a text node,
* or the element of an attribute node.
*/
function addAttributes( element, separator ) {
if( element.childNodes.length > 0 ) {
for( var i = 0; i < element.childNodes.length; i++ ) {
addAttributes( element.childNodes[i], separator );
}
}
var nodeValue;
var elementTarget;
// From http://stackoverflow.com/questions/9178174/find-all-text-nodes
if( element.nodeType == Node.TEXT_NODE && /\S/.test(element.nodeValue) ) {
addAttributeInElement( element, element.parentNode, separator );
}
if( element.nodeType == Node.ELEMENT_NODE && element.attributes.length > 0 ) {
for( var j = 0; j < element.attributes.length; j++ ){
var attr = element.attributes[j];
addAttributeInElement( attr, element, separator );
}
}
}
/**
* Converts any current data-markdown slides in the
* DOM to HTML.
*/
function convertSlides() {
var sections = document.querySelectorAll( '[data-markdown]');
for( var i = 0, len = sections.length; i < len; i++ ) {
var section = sections[i];
// Only parse the same slide once
if( !section.getAttribute( 'data-markdown-parsed' ) ) {
section.setAttribute( 'data-markdown-parsed', true )
var notes = section.querySelector( 'aside.notes' );
var markdown = getMarkdownFromSlide( section );
section.innerHTML = marked( markdown );
addAttributes( section, section.getAttribute( 'data-element-attributes' ) ||
section.parentNode.getAttribute( 'data-element-attributes' ) ||
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR );
// If there were notes, we need to re-add them after
// having overwritten the section's HTML
if( notes ) {
section.appendChild( notes );
}
}
}
}
// API
return {
initialize: function() {
processSlides();
convertSlides();
},
// TODO: Do these belong in the API?
processSlides: processSlides,
convertSlides: convertSlides,
slidify: slidify
};
}));