From 245efee894311bc2cafecf9f7fa61547013ac975 Mon Sep 17 00:00:00 2001
From: Adam Hepton <adam.hepton@frogtrade.com>
Date: Tue, 25 Jun 2013 12:15:22 +0100
Subject: Support for notes within markdown

---
 plugin/markdown/markdown.js | 41 ++++++++++++++++++++++++++++-------------
 1 file changed, 28 insertions(+), 13 deletions(-)

(limited to 'plugin')

diff --git a/plugin/markdown/markdown.js b/plugin/markdown/markdown.js
index 473666b..8366c50 100755
--- a/plugin/markdown/markdown.js
+++ b/plugin/markdown/markdown.js
@@ -28,7 +28,9 @@
     };
 
     var twrap = function(el) {
-      return '<script type="text/template">' + el + '</script>';
+      var cnt = el.content || el;
+      cnt += el.asideContent ? ('<aside class="notes" data-markdown>' + el.asideContent + '</aside>') : '';
+      return '<script type="text/template">' + cnt + '</script>';
     };
 
     var getForwardedAttributes = function(section) {
@@ -40,7 +42,7 @@
                 value = attributes[i].value;
 
             // disregard attributes that are used for markdown loading/parsing
-            if( /data\-(markdown|separator|vertical)/gi.test( name ) ) continue;
+            if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
 
             if( value ) {
                 result.push( name + '=' + value );
@@ -53,22 +55,27 @@
         return result.join( ' ' );
     }
 
-    var slidifyMarkdown = function(markdown, separator, vertical, attributes) {
+    var slidifyMarkdown = function(markdown, separator, vertical, notes, attributes) {
 
         separator = separator || '^\n---\n$';
 
         var reSeparator = new RegExp(separator + (vertical ? '|' + vertical : ''), 'mg'),
             reHorSeparator = new RegExp(separator),
+            notesSeparator = new RegExp(notes, 'mg'),
             matches,
+            noteMatch,
             lastIndex = 0,
             isHorizontal,
             wasHorizontal = true,
             content,
+            asideContent,
+            slide,
             sectionStack = [],
             markdownSections = '';
 
         // iterate until all blocks between separators are stacked up
         while( matches = reSeparator.exec(markdown) ) {
+            asideContent = null;
 
             // determine direction (horizontal by default)
             isHorizontal = reHorSeparator.test(matches[0]);
@@ -80,18 +87,28 @@
 
             // pluck slide content from markdown input
             content = markdown.substring(lastIndex, matches.index);
+            noteMatch = content.split(notesSeparator);
+
+            if(noteMatch.length === 2) {
+                content = noteMatch[0];
+                asideContent = noteMatch[1].trim();
+            }
+
+            slide = {
+                content: content,
+                asideContent: asideContent || ""
+            };
 
             if( isHorizontal && wasHorizontal ) {
                 // add to horizontal stack
-                sectionStack.push(content);
+                sectionStack.push(slide);
             } else {
                 // add to vertical stack
-                sectionStack[sectionStack.length-1].push(content);
+                sectionStack[sectionStack.length-1].push(slide);
             }
 
             lastIndex = reSeparator.lastIndex;
             wasHorizontal = isHorizontal;
-
         }
 
         // add the remaining slide
@@ -99,15 +116,13 @@
 
         // flatten the hierarchical stack, and insert <section data-markdown> tags
         for( var k = 0, klen = sectionStack.length; k < klen; k++ ) {
-            // horizontal
-            if( typeof sectionStack[k] === 'string' ) {
-                markdownSections += '<section '+ attributes +' data-markdown>' +  twrap( sectionStack[k] )  + '</section>';
-            }
             // vertical
-            else {
+           if(sectionStack[k].propertyIsEnumerable(length) && typeof sectionStack[k].splice === "function") {
                 markdownSections += '<section '+ attributes +'>' +
                                         '<section data-markdown>' +  sectionStack[k].map(twrap).join('</section><section data-markdown>') + '</section>' +
                                     '</section>';
+            } else {
+                markdownSections += '<section '+ attributes +' data-markdown>' + twrap( sectionStack[k] ) + '</section>';
             }
         }
 
@@ -131,7 +146,7 @@
                 xhr.onreadystatechange = function () {
                     if( xhr.readyState === 4 ) {
                         if (xhr.status >= 200 && xhr.status < 300) {
-                            section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), getForwardedAttributes(section) );
+                            section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) );
                         } else {
                             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.' +
@@ -150,7 +165,7 @@
             } else if( section.getAttribute('data-separator') ) {
 
                 var markdown = stripLeadingWhitespace(section);
-                section.outerHTML = slidifyMarkdown( markdown, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), getForwardedAttributes(section) );
+                section.outerHTML = slidifyMarkdown( markdown, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) );
 
             }
         }
-- 
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