AyaWo.Web/Content/zui/dist/lib/sortable/zui.sortable.js

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/*!
 * ZUI: 排序 - v1.7.0 - 2017-06-17
 * http://zui.sexy
 * GitHub: https://github.com/easysoft/zui.git 
 * Copyright (c) 2017 cnezsoft.com; Licensed MIT
 */

/* ========================================================================
 * ZUI: sortable.js
 * http://zui.sexy
 * ========================================================================
 * Copyright (c) 2014-2016 cnezsoft.com; Licensed MIT
 * ======================================================================== */


+ function($, window, document) {
    'use strict';

    if(!$.fn.droppable) {
        console.error('Sortable requires droppable.js');
        return;
    }

    var NAME     = 'zui.sortable',
        DEFAULTS = {
            selector     : 'li,div',
            dragCssClass : 'invisible',
            sortingClass : 'sortable-sorting'
        },
        STR_ORDER = 'order';

    var Sortable = function(element, options) {
        var that     = this;
        that.$       = $(element);
        that.options = $.extend({}, DEFAULTS, that.$.data(), options);
        that.init();
    };

    Sortable.DEFAULTS = DEFAULTS;
    Sortable.NAME     = NAME;

    Sortable.prototype.init = function() {
        var that         = this,
            $root        = that.$,
            options      = that.options,
            selector     = options.selector,
            sortingClass = options.sortingClass,
            dragCssClass = options.dragCssClass,
            isReverse    = options.reverse;

        var markOrders = function($items) {
            $items = $items || that.getItems(1);
            var orders = [];

            $items.each(function() {
                var order = $(this).data(STR_ORDER);
                if(typeof order === 'number') {
                    orders.push(order);
                }
            });