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/**
* Prado Callback client-side request handler.
*/
Prado.Callback = Class.create();
/**
* Static definitions.
*/
Object.extend(Prado.Callback,
{
/**
* Callback request target POST field name.
*/
FIELD_CALLBACK_TARGET : 'PRADO_CALLBACK_TARGET',
/**
* Callback request parameter POST field name.
*/
FIELD_CALLBACK_PARAMETER : 'PRADO_CALLBACK_PARAMETER',
/**
* List of form fields that will be collected during callback.
*/
PostDataLoaders : ['PRADO_PAGESTATE'],
/**
* Respond to Prado Callback request exceptions.
*/
Exception :
{
/**
* Server returns 505 exception. Just log it.
*/
"on505" : function(request, transport, data)
{
var msg = 'HTTP '+transport.status+" with response";
Logger.error(msg, transport.responseText);
this.logException(data);
},
/**
* Callback OnComplete event,logs reponse and data to console.
*/
onComplete : function(request, transport, data)
{
if(transport.status != 505)
{
var msg = 'HTTP '+transport.status+" with response : \n";
msg += transport.responseText + "\n";
msg += "Data : \n"+inspect(data);
Logger.warn(msg);
}
},
/**
* Formats the exception message for display in console.
*/
formatException : function(e)
{
var msg = e.type + " with message \""+e.message+"\"";
msg += " in "+e.file+"("+e.line+")\n";
msg += "Stack trace:\n";
var trace = e.trace;
for(var i = 0; i<trace.length; i++)
{
msg += " #"+i+" "+trace[i].file;
msg += "("+trace[i].line+"): ";
msg += trace[i]["class"]+"->"+trace[i]["function"]+"()"+"\n";
}
return msg;
},
/**
* Log Callback response exceptions to console.
*/
logException : function(e)
{
Logger.error("Callback Request Error "+e.code, this.formatException(e));
}
},
/**
* @return string JSON encoded data.
*/
encode : function(data)
{
Prado.JSON.stringify(data);
},
/**
* @return mixed javascript data decoded from string using JSON decoding.
*/
decode : function(data)
{
return Prado.JSON.parse(data);
}
})
//Add HTTP exception respones when logger is enabled.
Event.OnLoad(function()
{
if(typeof Logger != "undefined")
Ajax.Responders.register(Prado.Callback.Exception);
});
/**
* Create and prepare a new callback request.
*/
Prado.Callback.prototype =
{
/**
* Callback URL, same url as the current page.
*/
url : window.location.href,
/**
* Callback options, including onXXX events.
*/
options : {},
/**
* Callback target ID. E.g. $control->getUniqueID();
*/
id : null,
/**
* Callback parameters.
*/
parameters : null,
/**
* Prepare and inititate a callback request.
*/
initialize : function(id, parameters, onSuccess, options)
{
this.options = options || {};
this.id = id;
this.parameters = parameters;
var request =
{
postBody : this._getPostData(),
onSuccess : this._onSuccess.bind(this)
}
Object.extend(this.options || {},request);
new Ajax.Request(this.url, this.options);
},
/**
* Collects the form inputs, encode the parameters, and sets the callback
* target id. The resulting string is the request content body.
* @return string request body content containing post data.
*/
_getPostData : function()
{
var data = {};
Prado.Callback.PostDataLoaders.each(function(name)
{
$A(document.getElementsByName(name)).each(function(element)
{
var value = $F(element);
if(typeof(value) != "undefined")
data[name] = value;
})
})
if(typeof(this.parameters) != "undefined")
data[Prado.Callback.FIELD_CALLBACK_PARAMETER] = Prado.Callback.encode(this.parameters);
data[Prado.Callback.FIELD_CALLBACK_TARGET] = this.id;
return $H(data).toQueryString();
},
/**
* Dispatch a successfull response to the appropriate responders.
*/
_onSuccess : function(response, transport, json)
{
//Logger.info("asd");
}
}
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