import util.Proxy;
class Widget {
private var _someProperty:Number = 5;
public function Widget(xmlFile:String){
var xmlData:XML;
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = Proxy.create(this,init,xmlData);
xmlData.load(xmlFile);
}
private function init(success:Boolean, xmlData:XML){
trace(success);
trace(this._someProperty);
trace(xmlData);
}
}
You can get proxy from http://www.person13.com/articles/proxy/Proxy.htm
Alternatively (and not as cleanly):
class Widget {
private var _someProperty:Number = 5;
public function Widget(xmlFile:String){
var xmlData:XML;
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = function(success:Boolean){
ref.init(success,this);
}
xmlData.load(xmlFile);
}
private function init(success:Boolean, xmlData:XML){
trace(success);
trace(this._someProperty);
trace(xmlData);
}
}
onLoad dosen't "take" parameters -- it's being invoked by the XML
class from a private method and passed a boolean value so that you can
evaluate if the load was successful.
With "= function(success:Boolean){...", you are assigning the onLoad
method an anonymous function so that when the method does eventually
get invoked after a successful load, your functionality is invoked as
well.
--
Joseph Sorensen
D_C wrote:
i have a UI widget that loads its own layout info from an XML file.
is there a way to set the xml.onLoad to a useful function?
I would like to have the xml.onLoad callback to initialize the object
itself, like this:
class MyWidget {
function myWidget(xmlFile) { // constructor
xmlData = new XML();
xmlData.load( xmlFile );
xmlData.onLoad = this.init(xmlData); // doesnt work
}
function init(xmlData) {
/// do layout stuff here
}
}
it seems the xml.onLoad will only take a function with a single
boolean parameter? eg
xmlData.onLoad = function(success) { // ...
is there another pattern for doing this?
thanks!
/dc
_______________________________________________
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--
--
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Web Design / Audio Production / Photography
*Web:* aerosdesign.com/jsorensen
*Em:* jsorensen[at]aerosdesign.com
*Ph:* 815.276.9006
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