Array out of Objects

[rakmaster]

Back in the old days of Flash, I was able to walk through all of the objects on
the stage, and filter them by the type of object. I could then detect the id of
the given object type and make a match.

Now, in Flex, I'm completely lost. All I want to do is walk through all of the
objects on the stage, determine which ones are a particular type of Object,
then match that list of Objects against a known value:
for each(var n:Object in thisApplication) {
if(n instanceof 'Button') {
if(n.id == "myCheckValue") {
doSomethingToN();
}
}
}

Is this possible?

[Craig Grummitt]

check the [url]http://livedocs.adobe.com/flex/3/langref/index.html?migration.html[/url].

it is advised to use 'is' rather than 'instanceof' eg.

if (n is Button) {

[rakmaster]

Okay, but what is thisApplication? In Flash I would write:

for each(n in _root) {
if(n instanceof 'movieclip') {
functiontoDo();
}
}

what is the equivalent of _root? If I try to use for each(var n:Object in
test.getChildren()) where test is anything; the name of the file, the id of the
mx:Canvas that holds the elements I'm trying to address, or even a variable
that is assigned the value of any of the above, all I get is an error message
that says "Call to a possibly undefined method getChildren through a reference
with static type Class." Here's what I'm trying to do:

var lowState:Boolean = false;
var buttons:Array = [Btn1,Btn2,Btn3];
var lowLabels:Array = ['label 1','label2','label3'];
var highLabels:Array = ['LABEL 1','LABEL 2','LABEL 3'];

function changeLables():void {
var useArray:Array = new Array();
if(lowState == false) {
useArray = lowLabels;
lowState = true;
} else {
useArray = hightLabels;
lowState = false;
}
// test = the name of the movie
for each(var n:Object in test.getChildren()) {
if(n is Button) {
for(var i:int=0;i<buttons.length;i++) {
if(n.id == buttons[i]) {
n.label = useArray[i];
}
}
}
}
<mx:Button id="Btn1" label="Label 1" />
<mx:Button id="Btn2" label="Label 2" />
<mx:Button id="Btn3" label="Label 3" />

[Craig Grummitt]

rakmaster i only called the object that you wanted to extract the children of
'thisApplication' coz that's what you called it. you can call the getChildren
method on any Container. As the main Application class is a container, you can
call it on that if you like. so if you are calling this script from the
Application class, it would be as simple as calling this.getChildren().