Extjs中获取TreePanel节点的值的问题

Question

用Extjs做了一个TreePanel，然后右击TreePanel的节点的时候要弹出一个窗体，窗体中的内容就是根据节点的信息查询来的。但是我不知道怎么获取点击的TreePanel的信息。能不能给一个小的事例，代码最好是尽量简单。

Answer 1

   /** 
            * 组建树 4.0.0版的
            */
            var buildTree = function(json) {
                return Ext.create('Ext.tree.Panel', {
                    rootVisible: false, /////////////////
                    border: false,
                    store: Ext.create('Ext.data.TreeStore', {
                        root: {
                            expanded: true,
                            children: json.children
                        }
                    }),
                    listeners: {
                        'itemclick': function(view, record, item,
                                        index, e) {
                            var id = record.get('id');
                            var text = record.get('text');
                            var leaf = record.get('leaf');
                            var tabPanel = Ext.getCmp('tab');
                            var tab = tabPanel.getComponent(id + "");
                            if (leaf) {
                                if (!tab) {
                                    tabPanel.add({
                                        id: id,
                                        title: text,
                                        closable: true,
                                        layout: 'fit',
                                        items: [{
                                            html: '<iframe id="itemPanel" name="itemPanel" frameborder=0 src="' + record.raw.url + '"  style="width:100%;height:100%;" scrolling=no></iframe>'
}]
                                        }).show();
                                    }
                                    tabPanel.setActiveTab(tab); //设置显示当前面板
                                }
                            },
                            scope: this
                        }
                    });
                };

Answer 2

http://topic.csdn.net/u/20110913/11/08cb3181-c9fb-45c1-87b7-61764c199202.html