From 9dab2ce4e76736f2ed0e3a23ca2315938cd132b3 Mon Sep 17 00:00:00 2001
From: ichuang <ichuang@gmail.com>
Date: Sat, 2 Jun 2012 17:17:00 -0400
Subject: [PATCH] dynamic math rendering timing - had issue with display
 disappearing after click due to call to content_updated(); fixed this.

---
 templates/problem.js | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/templates/problem.js b/templates/problem.js
index 6dfca68d12..3079b84a8f 100644
--- a/templates/problem.js
+++ b/templates/problem.js
@@ -2,6 +2,19 @@ function ${ id }_content_updated() {
   MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
   update_schematics();
 
+  // dynamic math display: generate MathML on click
+  $.each($("[id^=input_${ id }_]"), function(index,value){
+      theid = value.id.replace("input_","");		// ID of the response
+      if (document.getElementById("display_" + theid)){
+	  MathJax.Hub.queue.Push(function () {
+	      math = MathJax.Hub.getAllJax("display_" + theid)[0];
+	      if (math){
+		  math.Text(document.getElementById("input_" + theid).value);
+	      }
+	  });
+      };
+  });
+
 //  for (var key in codemirror_set) {
 //      codemirror_set[key].refresh();
 //  }
@@ -17,6 +30,7 @@ function ${ id }_content_updated() {
 	  MathJax.Hub.queue.Push(function () {
 	      math = MathJax.Hub.getAllJax("display_" + theid)[0];
 	      if (math){
+		  math.Text(document.getElementById("input_" + theid).value);
 		  UpdateMathML(math,theid);
 	      }
 	  });