    /**
     * This plugin allow you to reorder tabs of a TabPanel.
     */
    Ext.define('Ext.ux.TabReorderer', {

        extend: 'Ext.ux.BoxReorderer',

        itemSelector: '.x-tab',

        init: function(tabPanel) {
            var me = this;

            me.callParent([tabPanel.getTabBar()]);

            // Ensure reorderable property is copied into dynamically added tabs
            tabPanel.onAdd = Ext.Function.createSequence(tabPanel.onAdd, me.onAdd);
        },

        onBoxReady: function() {
            var tabs,
                len,
                i = 0,
                tab;

            this.callParent(arguments);

            // Copy reorderable property from card into tab
            for (tabs = this.container.items.items, len = tabs.length; i < len; i++) {
                tab = tabs[i];
                if (tab.card) {
                    tab.reorderable = tab.card.reorderable;
                }
            }
        },

        onAdd: function(card, index) {
            card.tab.reorderable = card.reorderable;
        },

        afterBoxReflow: function() {
            var me = this;

            // Cannot use callParent, this is not called in the scope of this plugin, but that of its Ext.dd.DD object
            Ext.ux.BoxReorderer.prototype.afterBoxReflow.apply(me, arguments);

            // Move the associated card to match the tab order
            if (me.dragCmp) {
                me.container.tabPanel.setActiveTab(me.dragCmp.card);
                me.container.tabPanel.move(me.startIndex, me.curIndex);
            }
        }
    });