datasource-function-debug.js revision 911b8d42bda90437853b6ee60a0d7f4bb41483b5
YUI.add('datasource-function', function(Y) {
/**
* Provides a DataSource implementation which can be used to retrieve data from a custom function.
*
* @module datasource
* @submodule datasource-function
*/
/**
* Function subclass for the DataSource Utility.
* @class DataSource.Function
* @extends DataSource.Local
* @constructor
*/
var LANG = Y.Lang,
DSFn = function() {
DSFn.superclass.constructor.apply(this, arguments);
};
/////////////////////////////////////////////////////////////////////////////
//
// DataSource.Function static properties
//
/////////////////////////////////////////////////////////////////////////////
Y.mix(DSFn, {
/**
* Class name.
*
* @property NAME
* @type String
* @static
* @final
* @value "dataSourceFunction"
*/
NAME: "dataSourceFunction",
/////////////////////////////////////////////////////////////////////////////
//
// DataSource.Function Attributes
//
/////////////////////////////////////////////////////////////////////////////
ATTRS: {
/**
* @attribute source
* @description Pointer to live data.
* @type MIXED
* @default null
*/
source: {
validator: LANG.isFunction
}
}
});
Y.extend(DSFn, Y.DataSource.Local, {
/**
* Passes query string to IO. Fires <code>response</code> event when
* response is received asynchronously.
*
* @method _defRequestFn
* @param e {Event.Facade} Event Facade with the following properties:
* <dl>
* <dt>tId (Number)</dt> <dd>Unique transaction ID.</dd>
* <dt>request (Object)</dt> <dd>The request.</dd>
* <dt>callback (Object)</dt> <dd>The callback object with the following properties:
* <dl>
* <dt>success (Function)</dt> <dd>Success handler.</dd>
* <dt>failure (Function)</dt> <dd>Failure handler.</dd>
* </dl>
* </dd>
* <dt>cfg (Object)</dt> <dd>Configuration object.</dd>
* </dl>
* @protected
*/
_defRequestFn: function(e) {
var fn = this.get("source"),
response;
if(fn) {
try {
response = fn(e.request, this, e);
this.fire("data", Y.mix({data:response}, e));
}
catch(error) {
e.error = error;
this.fire("error", e);
}
}
else {
e.error = new Error("Function data failure");
this.fire("error", e);
}
return e.tId;
}
});
Y.DataSource.Function = DSFn;
}, '@VERSION@' ,{requires:['datasource-local']});