Feature request: Add ignoreClass to mml2jax configuration options

Created by: samdooley

It would be useful to allow a class name of elements whose contents should NOT be processed by mml2jax, similar to the tex2jax option. The use case I have in mind is to allow MathJax to process presentation MathML fragments in a page, while allowing other tools to process the content MathML in the page.

Here's a patch file for MathJax 2.2 that implements the support for ignoreClass.

Thanks, Sam Dooley

From 9f4a491a68bc7fd49709363acb3d5470e87b6964 Mon Sep 17 00:00:00 2001 From: Sam Dooley sam.dooley@pearson.com Date: Thu, 20 Jun 2013 13:21:35 -0600 Subject: [PATCH] Added ignoreClass to mml2jax configuration options --- unpacked/extensions/mml2jax.js | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-)

  diff --git a/unpacked/extensions/mml2jax.js b/unpacked/extensions/mml2jax.js
  index 1110a31..6d388be 100644
  --- a/unpacked/extensions/mml2jax.js
  +++ b/unpacked/extensions/mml2jax.js
  @@ -29,6 +29,12 @@
   MathJax.Extension.mml2jax = {
     version: "2.2",
     config: {
  +    ignoreClass: "mml2jax_ignore",
  +      // The class name of elements whose contents should
  +      // NOT be processed by mml2jax. Note that this is a
  +      // regular expression, so be sure to quote any regexp
  +      // special characters.
  +
       preview: "alttext"      // Use the <math> element's alttext as the 
                               //   preview.  Set to "none" for no preview,
                               //   or set to an array specifying an HTML snippet
  @@ -86,16 +92,18 @@ MathJax.Extension.mml2jax = {
     },

     ProcessMathArray: function (math) {
  -    var i;
  -    if (math.length) {
  -      if (this.MathTagBug) {
  -        for (i = math.length-1; i >= 0; i--) {
  -          if (math[i].nodeName === "MATH") {this.ProcessMathFlattened(math[i])}
  -                                      else {this.ProcessMath(math[i])}
  -        }
  -      } else {
  -        for (i = math.length-1; i >= 0; i--) {this.ProcessMath(math[i])}
  -      }
  +    if ( !math.length )
  +      return;
  +    if ( !this.ignoreClass )
  +      this.ignoreClass = new RegExp("(^| )("+this.config.ignoreClass+")( |$)");
  +    for ( var i = math.length - 1; i >= 0; i-- ) {
  +      var cname = math[ i ].className || "";
  +      if ( this.ignoreClass.exec( cname ) )
  +        continue;
  +      if ( this.MathTagBug && math[ i ].nodeName === "MATH" )
  +        this.ProcessMathFlattened( math[ i ] );
  +      else
  +        this.ProcessMath( math[ i ] );
       }
     },