!(function () {
    var Node = BI.inherit(BI.NodeButton, {

        props: {
            baseCls: "bi-list-item-active"
        },

        render: function () {
            var self = this
            return {
                type: "bi.vertical_adapt",
                items: [
                    {
                        el: {
                            type: "bi.text_button",
                            ref: function (_ref) {
                                self.icon = _ref
                            },
                            stopPropagation: true,
                            text: this.options.open ? "-" : "+",
                            height: 24,
                            width: 24,
                            handler: function () {
                                self.handleButtonClick()
                            }
                        },
                        lgap: this.options.layer * 24,
                    }, {
                        type: "bi.label",
                        textAlign: "left",
                        text: this.options.text
                    }
                ]
            }
        },

        handleButtonClick: function () {
            this.isOpened() ? this.triggerCollapse() : this.triggerExpand();
        },

        setOpened: function (b) {
            Node.superclass.setOpened.apply(this, arguments);
            this.icon.setText(b ? "-" : "+")
        },

        doClick: function () {
            // 很重要
        },

        getValue: function () {
            return this.options.id;
        },
    });

    BI.shortcut("bi.example.select_custom_tree.node", Node);
}())