Text/Markup.js

   1 if (typeof(JSAN) != 'undefined' ) {
   2     JSAN.use("jQuery", []);
   3 }
   4
   5
   6 var Text;
   7 if(!Text) Text = {};
   8
   9 Text.Markup = function(styles) {
  10   if(! (this.markup_styles = styles) ) {
  11     console.error('must pass style to new Text.Markup()');
  12   }
  13 }
  14
  15 Text.Markup.prototype.inflate_regions = function( regions ) {
  16   var mu = this;
  17   var ordering = 0;
  18   return jQuery.map( regions, function(a,i) {
  19     var style = mu.markup_styles[a[0]];
  20     ordering++;
  21
  22     if(! style ) {
  23       console.error('markup style "' + a + '" not defined');
  24       return;
  25     }
  26
  27     if( typeof style == 'object' ) {
  28       return [[[style[0],a[1]],999000-ordering],[[style[1],a[2]],-ordering]];
  29     } else {
  30       return [[[style,a[1]],999000-ordering]];
  31     }
  32   });
  33 };
  34
  35 Text.Markup.prototype.markup = function( regions, target_string ) {
  36   // expand the two-position markups into two one-position markups and decorate with ordering
  37   var markup_defs = this.inflate_regions(regions);
  38
  39   // sort the markup definitions in reverse order by coordinate and
  40   // sequence number
  41   markup_defs.sort( function(a,b) {
  42     return (b[0][1] - a[0][1]) || (b[1] - a[1]);
  43   });
  44
  45
  46   // do the string insertions and return a new string
  47   for ( var i = 0; i < markup_defs.length; i++ ) {
  48         var def = markup_defs[i][0];
  49         target_string = target_string.slice( 0, def[1] ) + def[0] + target_string.slice( def[1] );
  50   }
  51
  52   return target_string;
  53 };