store loadRawData callback

[smokeman]

I need to show a window with a grid tied to a store, but not before the store is loaded via a loadRawData request. how would I create a callback for this instance?

 Ext.Ajax.request({
        url:'../../AjaxUserTR1Interface',
        method: 'POST',
        params:{fn:'gettr1triptotal',trid:trid,tripid:tripid},
        callback:function(opts,suss,resp){
            if(resp !== null){
                var json=Ext.JSON.decode(resp.responseText);
                console.log(json);
                if(json){
                    var tripdata = Ext.decode(json.data[0].Td_tripjson);
                    var tbstore = Ext.getStore('tripBldrStore');
                    console.log('loading json records');
                    console.log(tripdata);
                    tbstore.loadRawData(tripdata);
                   //callback on this, so I know when it's finished!
                }          
            }
        }
    });

[smokeman]

nevermind, this is synchronous so it shouldn't be needed.