(function ($) {
    $.entwine('ss', function ($) {
        $('.ss-gridfield .gridfield-sortablerows input').entwine({
            PageSort: false,

            onmatch: function () {
                var self = this;
                var refCheckbox = $(this);
                var gridField = this.getGridField();
                var form = gridField.closest('form');
                var pageArrows = gridField.find('.gridfield-sortablerows-movepage .sortablerows-psort-arrow');

                if ($(this).is(':checked')) {
                    gridField.find('table').addClass('dragSorting');
                } else {
                    gridField.find('table').removeClass('dragSorting');
                }

                gridField.find('tbody').sortable({
                    opacity: 0.6,
                    disabled: ($(this).is(':checked') == false),
                    start: function (event, ui) {
                        pageArrows.show();
                        pageArrows.redraw();
                        pageArrows.startMoveTracking();
                    },
                    stop: function (event, ui) {
                        pageArrows.stopMoveTracking();
                        pageArrows.hide();
                    },
                    sort: function (event, ui) {
                        pageArrows.moveTracking(event, ui);
                    },
                    update: function (event, ui) {
                        if (self.getPageSort()) {
                            self.setPageSort(false);
                            return;
                        }

                        var gridItems = gridField.getItems();

                        gridItems.removeClass('first last odd even');
                        gridItems.first().addClass('first');
                        gridItems.last().addClass('last');
                        gridItems.filter(':even').addClass('odd');
                        gridItems.filter(':odd').addClass('even');

                        var dataRows = [];
                        var button = refCheckbox.parent().find('.sortablerows-savesort');


                        for (var i = 0; i < gridItems.length; i++) {
                            dataRows[i] = $(gridItems[i]).data('id');
                        }


                        self._makeRequest({
                            data: [
                                {
                                    name: button.attr('name'),
                                    value: button.val()
                                },
                                {
                                    name: 'ItemIDs',
                                    value: dataRows
                                }
                            ]
                        }, function () {
                            form.removeClass('loading');
                        });
                    }
                });

                if (refCheckbox.hasClass('gridfield-sortablerows-noselection') || $(this).is(':checked')) {
                    gridField.find('tbody').disableSelection();
                }
            },

            onchange: function (e) {
                var gridField = this.getGridField();
                gridField.find('tbody').sortable('option', 'disabled', ($(this).is(':checked') == false));
                gridField.setState('GridFieldSortableRows', {sortableToggle: $(this).is(':checked')});


                var button = $(this).parent().find('.sortablerows-toggle');
                gridField.reload({data: [{name: button.attr('name'), value: button.val()}]});
            },

            _makeRequest: function (ajaxOpts, callback) {
                var gridField = this.getGridField();
                var form = gridField.closest('form');

                form.addClass('loading');

                ajaxOpts.data = ajaxOpts.data.concat(form.find(':input').serializeArray());

                // Include any GET parameters from the current URL, as the view state might depend on it.
                // For example, a list prefiltered through external search criteria might be passed to GridField.
                if (window.location.search) {
                    ajaxOpts.data = window.location.search.replace(/^\?/, '') + '&' + $.param(ajaxOpts.data);
                }

                $.ajax($.extend({}, {
                    headers: {"X-Pjax": 'CurrentField'},
                    type: "POST",
                    url: gridField.data('url'),
                    dataType: 'html',
                    success: callback,
                    error: function (e) {
                        alert(ss.i18n._t('GRIDFIELD.ERRORINTRANSACTION'));
                    }
                }, ajaxOpts));
            }
        });

        $('.ss-gridfield .gridfield-sortablerows-movepage .sortablerows-psort-arrow').entwine({
            ArrowIcon: null,

            onmatch: function () {
                var gridField = this.getGridField();
                var sortableCheckbox = gridField.find('.gridfield-sortablerows input');
                var self = $(this);

                if ($(this).hasClass('sortablerows-prev-page') && (gridField.find('.ss-gridfield-previouspage').length == 0 || gridField.find('.ss-gridfield-previouspage').is(':disabled'))) {
                    $(this).remove();
                    return;
                } else if ($(this).hasClass('sortablerows-next-page') && (gridField.find('.ss-gridfield-nextpage').length == 0 || gridField.find('.ss-gridfield-nextpage').is(':disabled'))) {
                    $(this).remove();
                    return;
                }

                $(this).droppable({
                    disabled: $(this).is(':disabled'),
                    accept: 'tr.ss-gridfield-item',
                    activeClass: 'sortablerows-droptarget',
                    tolerance: 'pointer',
                    drop: function (event, ui) {
                        self.stopMoveTracking();

                        sortableCheckbox.setPageSort(true);

                        var button = gridField.find('.gridfield-sortablerows .sortablerows-sorttopage');
                        var itemID = $(ui.draggable).data('id');
                        var target = '';

                        if ($(this).hasClass('sortablerows-prev-page')) {
                            target = 'previouspage';
                        } else if ($(this).hasClass('sortablerows-next-page')) {
                            target = 'nextpage';
                        }


                        //Move and Reload the grid
                        gridField.reload({
                            data: [
                                {
                                    name: button.attr('name'),
                                    value: button.val()
                                },
                                {
                                    name: 'ItemID',
                                    value: itemID
                                },
                                {
                                    name: 'Target',
                                    value: target
                                }
                            ]
                        });
                    }
                });

                this.redraw();
            },
            redraw: function () {
                var gridField = this.getGridField();
                var tbody = gridField.find('tbody');
                var tbodyPos = tbody.position();

                $(this).css('top', tbodyPos.top + 'px').height(tbody.height());
            },
            startMoveTracking: function () {
                var self = $(this);
                self.setArrowIcon(self.find('i'));
            },
            stopMoveTracking: function () {
                $(this).setArrowIcon(null);
            },
            moveTracking: function (e, ui) {
                var self = $(this);
                var arrowIcon = self.getArrowIcon();
                if (arrowIcon) {
                    var selfOffset = self.offset().top;
                    var arrowIconHeight = arrowIcon.width() + 10;
                    var railHeight = self.height() - arrowIconHeight;
                    var helperPos = ui.helper.offset().top;

                    if (helperPos > selfOffset + 10 && helperPos < selfOffset + railHeight) {
                        arrowIcon.css('top', ((helperPos - selfOffset) + arrowIconHeight / 2) + 'px');
                    }
                }
            }
        });
    });

})(jQuery);