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enclose.js (3048B)

      1 /* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
      2 /* vim: set ts=2 et sw=2 tw=80: */
      3 
      4 /*************************************************************
      5  *
      6  *  MathJax/extensions/TeX/enclose.js
      7  *  
      8  *  Implements the \enclose macros, which give access from TeX to the
      9  *  <menclose> tag in the MathML that underlies MathJax's internal format.
     10  *  
     11  *  Usage:
     12  *  
     13  *      \enclose{notation}{math}                  % enclose math using given notation
     14  *      \enclose{notation,notation,...}{math}     % enclose with several notations
     15  *      \enclose{notation}[attributes]{math}      % enclose with attributes
     16  *  
     17  *  ---------------------------------------------------------------------
     18  *  
     19  *  Copyright (c) 2011-2015 The MathJax Consortium
     20  * 
     21  *  Licensed under the Apache License, Version 2.0 (the "License");
     22  *  you may not use this file except in compliance with the License.
     23  *  You may obtain a copy of the License at
     24  * 
     25  *      http://www.apache.org/licenses/LICENSE-2.0
     26  * 
     27  *  Unless required by applicable law or agreed to in writing, software
     28  *  distributed under the License is distributed on an "AS IS" BASIS,
     29  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     30  *  See the License for the specific language governing permissions and
     31  *  limitations under the License.
     32  */
     33 
     34 MathJax.Extension["TeX/enclose"] = {
     35   version: "2.6.0",
     36   
     37   //
     38   //  The attributes allowed in \enclose{notation}[attributes]{math}
     39   //
     40   ALLOWED: {
     41     arrow: 1,
     42     color: 1, mathcolor: 1,
     43     background: 1, mathbackground: 1,
     44     padding: 1,
     45     thickness: 1
     46   }
     47 };
     48   
     49 MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
     50   var TEX = MathJax.InputJax.TeX,
     51       MML = MathJax.ElementJax.mml,
     52       ALLOW = MathJax.Extension["TeX/enclose"].ALLOWED;
     53   
     54   //
     55   //  Set up macro
     56   //
     57   TEX.Definitions.Add({macros: {enclose: 'Enclose'}},null,true);
     58 
     59   TEX.Parse.Augment({
     60     //
     61     //  Implement \enclose{notation}[attr]{math}
     62     //    (create <menclose notation="notation">math</menclose>)
     63     //
     64     Enclose: function(name) {
     65       var notation = this.GetArgument(name),
     66           attr = this.GetBrackets(name),
     67           math = this.ParseArg(name);
     68       var def = {notation: notation.replace(/,/g," ")};
     69       if (attr) {
     70         attr = attr.replace(/ /g,"").split(/,/);
     71         for (var i = 0, m = attr.length; i < m; i++) {
     72           var keyvalue = attr[i].split(/[:=]/);
     73           if (ALLOW[keyvalue[0]]) {
     74             keyvalue[1] = keyvalue[1].replace(/^"(.*)"$/,"$1");
     75             if (keyvalue[1] === "true") {keyvalue[1] = true}
     76             if (keyvalue[1] === "false") {keyvalue[1] = false}
     77             if (keyvalue[0] === "arrow" && keyvalue[1])
     78               {def.notation = def.notation + " updiagonalarrow"} else
     79               {def[keyvalue[0]] = keyvalue[1]}
     80           }
     81         }
     82       }
     83       this.Push(MML.menclose(math).With(def));
     84     }
     85   });
     86 
     87   MathJax.Hub.Startup.signal.Post("TeX enclose Ready");
     88   
     89 });
     90 
     91 MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/enclose.js");