sencha touch JsonP 自动提示消息 masked（废弃 仅参考）

查看Ext.data.JsonP源码重写了源码中的方法，以便能够加入自动提示。看起来不是那么的优雅，求高人指点

 1         var me = this;
 2         //提示消息
 3         me.message = '正在努力加载中...';
 4         //提示消息组件
 5         var cardPanel = Ext.getCmp('cardPanel');
 6         Ext.data.JsonP.handleResponse = function (result, request) {
 7             var success = true;
 8 
 9             if (request.timeout) {
10                 clearTimeout(request.timeout);
11             }
12 
13             delete this[request.callbackName];
14             delete this.requests[request.id];
15 
16             this.cleanupErrorHandling(request);
17             Ext.fly(request.script).destroy();
18 
19             if (request.errorType) {
20                 success = false;
21                 Ext.callback(request.failure, request.scope, [request.errorType, request]);
22             } else {
23                 Ext.callback(request.success, request.scope, [result, request]);
24             }
25             Ext.callback(request.callback, request.scope, [success, result, request.errorType, request]);
26             //隐藏消息提示
27             cardPanel.hideMessage();
28         };
29 
30         Ext.data.JsonP.createScript = function (url, params, options) {
31             //显示消息提示
32             if (me.message) {
33                 cardPanel.showMessage(me.message, true);
34             }
35             var script = document.createElement('script');
36             script.setAttribute("src", Ext.urlAppend(url, Ext.Object.toQueryString(params)));
37             script.setAttribute("async", true);
38             script.setAttribute("type", "text/javascript");
39             return script;
40         };