Equation Editor should be updated to use a newer version of asciimathml.js

[guest]

I am using xinha in moodle with Equation Editor.

Things seem to work fine with the version published here. However, because the plugin was using version 1.4 of asciimathml.js, I tried to use the plugin with the current version of asciimathml.

While I initially thought that Equation was working fine with the current version of asciimathml.js (packaged as version 2.0.2 on sourceforge) there are at least two problems.

1) There is no preview available 2) returning to a document to re-edit results in prior equations being converted into mathml

My guess is that it would not take a great deal of effort to resolve the problem, but at this point it looks like it is beyond me.

As there may be some additional improvements to asciimathml.js forthcoming this summer, addressing the change from versin 1 to version 2 before then would be helpful.

[gogo]

Original development was in #877

I see the new ASCIIMathML is LGPL from the get-go, so just needs somebody familiar with this to bring it across.

[guest]

popups/dialog.html of Xinha 0.95 with all my changes applied

[guest]

I have worked on this too, and have gotten it working with ASCIIMathML 2.0.2. Here's the changes I had to make:

1. Replace xinha/plugins/Equation/ASCIIMathML.js with the official 2.0.2 version from http://mathcs.chapman.edu/~jipsen/mathml/ASCIIMathML.js 2. Add this just below the script tag in popups/dialog.html:

// START - Added for compatibility with ASCIIMathML 2.0
var AMtranslated = false;
// Next 2 functions copied from ASCIIMathML 1.4.7
function AMcreateElementXHTML(t) {
  if (isIE) return document.createElement(t);
  else return document.createElementNS("http://www.w3.org/1999/xhtml", t);
}
function AMinitSymbols() {
  var texsymbols = [], i;
  for (i=0; i<AMsymbols.length; i++)
    if (AMsymbols[i].tex) 
      texsymbols[texsymbols.length] = {input:AMsymbols[i].tex, 
        tag:AMsymbols[i].tag, output:AMsymbols[i].output, ttype:AMsymbols[i].ttype};
  AMsymbols = AMsymbols.concat(texsymbols);
  AMsymbols.sort(compareNames);
  for (i=0; i<AMsymbols.length; i++) AMnames[i] = AMsymbols[i].input;
}
// END - Added for compatibility with ASCIIMathML 2.0

3. In the same file, in the preview() function, change:

      outnode.appendChild(document.createComment("`"+str+"`"));

to:

      outnode.appendChild(document.createTextNode("`"+str+"`"));

4. Optionally, in ASCIIMathML.js, change var mathcolor = "blue"; to var mathcolor = ""; unless you prefer seeing your formulas in blue.

Everything appears to be working as it was with the older version of ASCIIMathML except that in the live preview the trailing and preceeding $$ are not ignored and are visible in the equation now. So if you're entering LaTeX equations then don't enter the $. In the old version it would break if you entered an odd number of $ but work if you entered an even (or no) $s. Pretty wierd.. I think this new behavior is better.

I've also attached a modified dialog.html from Xinha 0.95 slightly before this post if anyone wants to quickly give it a run.

Niraj Bhawnani
Research Assistant
University of New South Wales.

[gogo]

Thank you for your submission, this is committed in changeset:1254