I find this method very confusing. The user of the class meets its constructor. And is forced to use singleton get instance method in a very very strange and uncommon way. The desired method would be not a strange requirement but a pretty widely used error of using the constructor (as we know, i’s impossible to make a constructor private in AS3). I can offer a very simple and “close to originals” way of building singleton classes:

static private var _instance:SingletonClass = null;
static private var _allowCallConstructor:Boolean = false;

public function SingletonClass()

{

if( !_allowClassConstructor )

throw new Error("Use getInstance() method instead");

...

}

}

If I have a regular handler

private function init(event:Event):void
{
…
}

I’d have to pass some sort of argument (probably null would be enough) to call it. If I don’t pass – the warning (or in some compiler mode) an error will appear.

init(null);

If I make just some method, I won’t be able to use it as an event handler error. Since I will get runtime error.

A very light and elegant solution was given in actionscript.org forum.

private function init(event:Event=null);

This prevents from warning when not passing an argument (using as simple method) and both it can be used as an event handler.

public class Main extends Sprite
{
public function Main()
{
if( stage != null )
init();
else
addEventListener(Event.ADDED_TO_STAGE,init);
…

this.soundTransform.volume = 0.5;

But nothing realy happened. I’ve set the break point in the line of the volume modification and in the line right after that. So in the first breakpoint the value was like 0. But how surprised I wasm when the watch tool showed me the same value in the second line, after the modification. Even despite the factthat volume of SoundTransform class is marked as [read/write].

Next one worked fine in the way I wanted it:

this.soundTransform = new SoundTransform(0.5);

var ro:RemoteObject = new RemoteObject(“GenericDestination”);
ro.SomMethod.addEventListener(ResultEvent.RESULT,onServiceResult);
…
private virtual function onServiceResult(event:ResultEvent):void
…

How disappointed I became, when half of an hour of googling didn’t gimme any result for that. My team leader told me that means, that a method can be called from server. Though no documentation is still available for me. Realy mistic…

After several minutes of sleeping on docs, I realized that the value of the property can come null if all the styles (say not one) have changed. So we additionaly check:

override public function styleChanged(styleProp:Strinf):void
{
super.styleChanged(styleProp);

if( styleProp == null )
{
// perform all skin updates
}

}

More to learn on Flex…

Hi all. I’m trying to make a set of custom styles for component that extends mx:Panel.

skin.css is

.videoPanel
{
backgroundSkin : @Embed[( ...
someStyle : 100;
}

Inside mxml file I do:

<mx:Style source="skin.css"/>
<video:VideoPanel styleName="videoPanel"/>

And inside VideoPanel.as I have:

[Style(name="someStyle",type="String",inherit="no")]
public class VideoPanel extends Panel
{
private static var classConstructed:Boolean = classConstract();

private static var classConstruct():Boolean
{
if( StyleManager.getStyleDeclaration(“VideoPanel”) == null )
{
var newStyle:CSSStyleDeclaration = new CSSStyleDeclaration();
newStyle.setStyle(“someStyle”,”HelloWorld”)
StyleManager.setStyleDeclaration(“VideoPanel”,newStyle,true);
}
return true;
}

override public function styleChanged(styleProp:String)
{
super.styleChanged(styleProp);
if( styleProp==”someStyle” )
{
…
}
}

…
}

The thing is that even if I comment super.styleChanged(styleProp); panel still gets it’s borderSkin. Probably I’ve missed something… But I just followed the official book. Eh… need a vocation!

Any comments about that? Thanks in advance…

PS: How do I get some [CODE] tag equivalent ?