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   1  /**
   2   * @file Plugin to count symbols, symbols without blanks and words
   3   */
   4  
   5  (function()
   6  {
   7      var emptyHtml = '<span class="cke_empty">&nbsp;</span>';
   8  
   9      CKEDITOR.plugins.add( 'counter',
  10      {
  11          init : function( editor )
  12          {
  13              var spaceId = 'cke_counter_' + editor.name;
  14              var spaceElement;
  15              var getSpaceElement = function()
  16              {
  17                  if ( !spaceElement )
  18                      spaceElement = CKEDITOR.document.getById( spaceId );
  19                  return spaceElement;
  20              };
  21  
  22              editor.on( 'themeSpace', function( event )
  23                  {
  24                      if ( event.data.space == 'bottom' )
  25                      {
  26                          event.data.html +=
  27                              '<span id="' + spaceId + '_label" class="cke_voice_label">Counter</span>' +
  28                              '<div id="' + spaceId + '" class="cke_counter" role="group" aria-labelledby="' + spaceId + '_label">' + emptyHtml + '</div>';
  29                      }
  30                  });
  31  
  32  			function count( ev )
  33                  {
  34                      var space = getSpaceElement();
  35                      var text = ev.editor.getData();
  36                      // decode HTML entities; it also removes HTML tags, but works only if jQuery is available
  37                      text = jQuery('<div/>').html(text).text();
  38                      // remove all redundant blank symbols
  39                      text = text.replace(new RegExp('\\s+', 'g'), ' ');
  40                      // remove all blank symbols at the start and at the end
  41                      text = text.replace(new RegExp('(^\\s+)|(\\s+$)', 'g'), '');
  42                      var symbols = text.length;
  43                      var words = text.split(' ').length;
  44                      //remove all blank symbols
  45                      text = text.replace(new RegExp('\\s+', 'g'), '');
  46                      var symbols_wo_blanks = text.length;
  47  
  48                      space.setHtml( '<span class="cke_counter" style="float: right">' + symbols + ' / ' + symbols_wo_blanks + ' symbols; ' + words + ' words</span>' );
  49                  }
  50  
  51              editor.on( 'dataReady', count );
  52              editor.on( 'blur', count );
  53              editor.on( 'focus', count );
  54              // Almost useless
  55              //editor.on( 'saveSnapshot', count );
  56              // Requires too much resources
  57              //editor.on( 'key', count );
  58          }
  59      });
  60  })();