// Custom sorting plugin
(function ($) {
    $.fn.sorted = function (customOptions) {
        var options = {
            reversed: false,
            by: function (a) { return a.text(); }
        };
        $.extend(options, customOptions);
        $data = $(this);
        arr = $data.get();
        arr.sort(function (a, b) {
            var valA = options.by($(a));
            var valB = options.by($(b));
            if (options.reversed) {
                return (valA < valB) ? 1 : (valA > valB) ? -1 : 0;
            } else {
                return (valA < valB) ? -1 : (valA > valB) ? 1 : 0;
            }
        });
        return $(arr);
    };
})(jQuery);

// DOMContentLoaded
$(function () {

    // bind radiobuttons in the form
    var $filterType = $('#filter input[name="type"]');
    var $filterSort = $('#filter input[name="sort"]');

    // get the first collection
    var $applications = $('#speakers');

    // clone applications to get a second collection
    var $data = $applications.clone();

    // attempt to call Quicksand on every form change
    $filterType.add($filterSort).change(function (e) {
        if ($($filterType + ':checked').val() == 'all') {
            var $filteredData = $data.find('li');
        } else {
            var $filteredData = $data.find('li[data-type=' + $($filterType + ":checked").val() + ']');
        }

        // if sorted by size
        if ($('#filter input[name="sort"]:checked').val() == "size") {
            var $sortedData = $filteredData.sorted({
                by: function (v) {
                    return parseFloat($(v).find('span[data-type=size]').text());
                }
            });
        } else {
            // if sorted by name
            var $sortedData = $filteredData.sorted({
                by: function (v) {
                    return $(v).find('strong').text().toLowerCase();
                }
            });
        }

        // finally, call quicksand
        $applications.quicksand($sortedData, {
            duration: 800,
            easing: 'swing'
        });
    });

});