$(document).ready(function() {

    "use strict";

    $('#example').dataTable();

    $('#example2').dataTable();

    $('#example3').dataTable( {
        "ajax": "../../../assets/ajax/datatable/objects.txt",
        "columns": [
            { "data": "name" },
            { "data": "position" },
            { "data": "office" },
            { "data": "extn" },
            { "data": "start_date" },
            { "data": "salary" }
        ]
    });

    /**** Example 4 ******/
    /*
     * Insert a 'details' column to the table
     */
    var nCloneTh = document.createElement( 'th' );
    var nCloneTd = document.createElement( 'td' );
    nCloneTd.innerHTML = '<img src="../../../assets/images/details_open.png">';
    nCloneTd.className = "center";

    $('#example4 thead tr').each( function () {
        this.insertBefore( nCloneTh, this.childNodes[0] );
    } );

    $('#example4 tbody tr').each( function () {
        this.insertBefore(  nCloneTd.cloneNode( true ), this.childNodes[0] );
    } );

    /*
     * Initialse DataTables, with no sorting on the 'details' column
     */
    var oTable = $('#example4').dataTable( {
        "aoColumnDefs": [
            { "bSortable": false, "aTargets": [ 0 ] }
        ],
        "aaSorting": [[1, 'asc']]
    });

    /* Add event listener for opening and closing details
     * Note that the indicator for showing which row is open is not controlled by DataTables,
     * rather it is done here
     */
    $(document).on('click','#example4 tbody td img',function () {
        var nTr = $(this).parents('tr')[0];
        if ( oTable.fnIsOpen(nTr) )
        {
            /* This row is already open - close it */
            this.src = "../../../assets/images/details_open.png";
            oTable.fnClose( nTr );
        }
        else
        {
            /* Open this row */
            this.src = "../../../assets/images/details_close.png";
            oTable.fnOpen( nTr, fnFormatDetails(oTable, nTr), 'details' );
        }
    } );

});


function fnFormatDetails ( oTable, nTr )
{
    var aData = oTable.fnGetData( nTr );
    var sOut = '<table cellpadding="5" cellspacing="0" border="0" style="padding-left:50px;">';
    sOut += '<tr><td>Rendering engine:</td><td>'+aData[1]+' '+aData[4]+'</td></tr>';
    sOut += '<tr><td>Link to source:</td><td>Could provide a link here</td></tr>';
    sOut += '<tr><td>Extra info:</td><td>And any further details here (images etc)</td></tr>';
    sOut += '</table>';

    return sOut;
}