/**

 * Read information from a column of checkboxes (input elements with type

 * checkbox) and return an array to use as a basis for sorting.

 *

 *  @summary Sort based on the checked state of checkboxes in a column

 *  @name Checkbox data source

 *  @author [Allan Jardine](http://sprymedia.co.uk)

 */



$.fn.dataTable.ext.order['dom-checkbox'] = function  ( settings, col )

{

	return this.api().column( col, {order:'index'} ).nodes().map( function ( td, i ) {

		return $('input', td).prop('checked') ? '1' : '0';

	} );

};

