layui 左侧导航生成tab

layui 左侧导航生成tab

layui.define(['jquery', 'element'], function(exports) {
    var $ = layui.jquery,
        element = layui.element,
        device = layui.device(),
        tabMenu = function() {
            this.config = {
                item: '#WeTabTip',
                closed: true
            };
        },
        objTab = {};

    /**
     * [参数设置 options]
     */
    tabMenu.prototype.set = function(options) {
        if (typeof(options) == 'string' && options != "") {
            this.config.item = options;
        } else if (typeof(options) == 'object') {
            $.extend(true, this.config, options);
        }
        return this;
    };

    /**
     *@todo 初始化对象
     *@return 返回对象参数初始化结果
     */
    tabMenu.prototype.init = function(options) {
        var _this = this,
            config = _this.config,
            $container = $('' + config.item + ''),
            filter = $container.attr('lay-filter');
        if (filter === undefined || filter === '') {
            console.log('错误:请设置Tab菜单选项卡属性lay-filter过滤器');
        }

        objTab.titleBox = $container.children('ul.layui-tab-title');
        objTab.contentBox = $container.children('div.layui-tab-content');
        objTab.tabFilter = filter;
        _this.hideRightMenu();
        _this.drag();

        return _this;
    }

    /**
     *@todo 检查页面是否已打开，如果已打开则返回索引值，否则返回-1
     *@param string title 打开页面的标题
     *@return int tab的索引值，元则返回-1
     */
    tabMenu.prototype.exited = function(title) {
        var tab_index = -1;
        if (objTab.titleBox === undefined) {
            this.init()
        }

        objTab.titleBox.find('li').each(function(i, e) {
            var $em = $(this).children('em');
            if ($em.text() === title) {
                tab_index = $(this).attr('lay-id');
            };
        });
        return tab_index;
    }

    /**
     * 菜单操作的接口
     */
    tabMenu.prototype.beforeTabAdd = function(data, _this) {}
    tabMenu.prototype.changeTab = function(data, _this, tab_index) {}
    tabMenu.prototype.afterTabClose = function(data, _this) {}

    /**
     *@todo 添加tab菜单选项卡
     *@param object data [ title 菜单选项卡标题
                          ,href 菜单URL地址
                          ,icon 菜单的ICON图标
                    ]
     */
    tabMenu.prototype.tabAdd = function(data, fresh) {

        var tab_index = this.exited(data.title),
            _this = this;
        if (tab_index === -1) {
            _this.beforeTabAdd(data, _this);
            var layID = data.layId ? data.layId : new Date().getTime();
            var content = '<iframe src="' + data.href + '" data-id="' + layID + '" class="jqadmin-iframe"></iframe>';
            var title = '';

            // 如果icon有定义则添加到标题中
            if (!_this.config.showIcon) {
                title += '<i class="iconfont hide-icon">' + data.icon + '</i>';
            } else {
                title += '<i class=&#