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File:  [LON-CAPA] / loncom / html / adm / jsMath / extensions / mathchoice.js
Revision 1.2: download - view: text, annotated - select for diffs
Tue Oct 9 21:29:22 2007 UTC (16 years, 11 months ago) by albertel
Branches: MAIN
CVS tags: version_2_9_X, version_2_9_99_0, version_2_9_1, version_2_9_0, version_2_8_X, version_2_8_99_1, version_2_8_99_0, version_2_8_2, version_2_8_1, version_2_8_0, version_2_7_X, version_2_7_99_1, version_2_7_99_0, version_2_7_1, version_2_7_0, version_2_6_X, version_2_6_99_1, version_2_6_99_0, version_2_6_3, version_2_6_2, version_2_6_1, version_2_6_0, version_2_5_99_1, version_2_5_99_0, version_2_12_X, version_2_11_X, version_2_11_5_msu, version_2_11_5, version_2_11_4_uiuc, version_2_11_4_msu, version_2_11_4, version_2_11_3_uiuc, version_2_11_3_msu, version_2_11_3, version_2_11_2_uiuc, version_2_11_2_msu, version_2_11_2_educog, version_2_11_2, version_2_11_1, version_2_11_0_RC3, version_2_11_0_RC2, version_2_11_0_RC1, version_2_11_0, version_2_10_X, version_2_10_1, version_2_10_0_RC2, version_2_10_0_RC1, version_2_10_0, loncapaMITrelate_1, language_hyphenation_merge, language_hyphenation, bz6209-base, bz6209, bz5969, bz2851, PRINT_INCOMPLETE_base, PRINT_INCOMPLETE, HEAD, GCI_3, GCI_2, GCI_1, BZ5971-printing-apage, BZ5434-fox, BZ4492-merge, BZ4492-feature_horizontal_radioresponse
- jsMath 3.4e

    1: /*
    2:  *  extensions/mathchoice.js
    3:  *  
    4:  *  Part of the jsMath package for mathematics on the web.
    5:  *
    6:  *  This file implements the 4-way math choice.  It will be loaded
    7:  *  automatically when needed, or can be loaded by
    8:  *  
    9:  *    jsMath.Extension.Require('mathchoice');
   10:  *
   11:  *  ---------------------------------------------------------------------
   12:  *
   13:  *  Copyright 2005-2006 by Davide P. Cervone
   14:  * 
   15:  *  Licensed under the Apache License, Version 2.0 (the "License");
   16:  *  you may not use this file except in compliance with the License.
   17:  *  You may obtain a copy of the License at
   18:  * 
   19:  *      http://www.apache.org/licenses/LICENSE-2.0
   20:  * 
   21:  *  Unless required by applicable law or agreed to in writing, software
   22:  *  distributed under the License is distributed on an "AS IS" BASIS,
   23:  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   24:  *  See the License for the specific language governing permissions and
   25:  *  limitations under the License.
   26:  */
   27: 
   28: /********************************************************************/
   29: 
   30: jsMath.Add(jsMath.mList.prototype.Atomize,{
   31: 
   32:   /*
   33:    *  Handle a 4-way choice atom.  (Rule 4)
   34:    */
   35:   choice: function (style,mitem,i,mlist) {
   36:     if (style.charAt(style.length-1) == "'") {style = style.slice(0,style.length-1)}
   37:     var nlist = []; var M = mitem[style];
   38:     if (!M) {M = {type: 'mlist', mlist: {mlist: []}}}
   39:     if (M.type == 'mlist') {
   40:       M = M.mlist.mlist;
   41:       for (var k = 0; k < i; k++) {nlist[k] = mlist[k]}
   42:       for (k = 0; k < M.length; k++) {nlist[i+k] = M[k]}
   43:       for (k = i+1; k < mlist.length; k++) {nlist[nlist.length] = mlist[k]}
   44:       return nlist;
   45:     } else {
   46:       mlist[i] = jsMath.mItem.Atom('ord',M);
   47:       return mlist;
   48:     }
   49:   }
   50: 
   51: });
   52: 
   53: jsMath.Package(jsMath.Parser,{
   54: 
   55:   macros: {mathchoice: 'MathChoice'},
   56:   
   57:   /*
   58:    *  Implements \mathchoice{}{}{}{}
   59:    */
   60:   MathChoice: function (name) {
   61:     var D  = this.ProcessArg(this.cmd+name); if (this.error) return;
   62:     var T  = this.ProcessArg(this.cmd+name); if (this.error) return;
   63:     var S  = this.ProcessArg(this.cmd+name); if (this.error) return;
   64:     var SS = this.ProcessArg(this.cmd+name); if (this.error) return;
   65:     var box = new jsMath.mItem('choice',{D: D, T: T, S: S, SS: SS});
   66:     this.mlist.Add(new jsMath.mItem('choice',{D: D, T: T, S: S, SS: SS}));
   67:   }
   68: 
   69: });
   70:
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