Demo = {};
Demo.Items = BI.inherit(BI.Widget, {
    render: function () {
        return {
            type: "bi.vertical",
            items: [{
                type: "bi.label",
                height: 30,
                text: "单选item"
            }, {
                type: "bi.single_select_item",
                text: "单选项"
            }, {
                type: "bi.label",
                height: 30,
                text: "复选item"
            }, {
                type: "bi.multi_select_item",
                text: "复选项"
            }]

        }
    }
});
BI.shortcut("demo.items", Demo.Items);
BI.createWidget({
  type: 'demo.items',
  element: "#wrapper",
});