Looping through childs in actionscript-3 - actionscript-3

Question

How do you loop through all the childs in a DisplayObjectContainer in as3? I would like a syntax like this:
for each(var displayObject:DisplayObject in displayObjectContainer )
{
displayObject.x += 10;
displayObject.y += 10;
}

Answer 1

Not sure if for each works, but this works.
for (var i:int = 0; i<myObj.numChildren; i++)
{
trace(myObj.getChildAt(i));
}

Answer 2

something like this maybe?
function getChildren(target:DisplayObjectContainer):Array {
var count:uint = target.numChildren;
var ret:Array = [];
for (var i:int = 0; i < count; i++)
ret.push(target.getChildAt(0));
return ret;
}
and then
for each (var child:Array in getChildren(displayObjectContainer)) {
//....
}
greetz
back2dos

Answer 3

You can use following recursive function to iterate through all children of any DisplayObjectContainer class.
function getChildren(dsObject:DisplayObjectContainer, iDepth:int = 0):void
{
var i:int = 0;
var sDummyTabs:String = "";
var dsoChild:DisplayObject;
for (i ; i < iDepth ; i++)
sDummyTabs += "\t";
trace(sDummyTabs + dsObject);
for (i = 0; i < dsObject.numChildren ; ++i)
{
dsoChild = dsObject.getChildAt(i);
if (dsoChild is DisplayObjectContainer && 0 < DisplayObjectContainer(dsoChild).numChildren)
getChildren(dsoChild as DisplayObjectContainer,++iDepth);
else
trace(sDummyTabs + "\t" + dsoChild);
}
}
It will display all children in hierarchical manner exactly as DisplayList tree.

Answer 4

My two cents.
public static function traceDisplayList(displayObject:DisplayObject, maxDepth:int = 100, skipClass:Class = null, levelSpace:String = " ", currentDepth:int = 0):void
{
if (skipClass != null) if (displayObject is skipClass) return;
trace(levelSpace + displayObject.name); // or any function that clean instance name
if (displayObject is DisplayObjectContainer && currentDepth < maxDepth)
{
for (var i:int = 0; i < DisplayObjectContainer(displayObject).numChildren; i++)
{
traceDisplayList(DisplayObjectContainer(displayObject).getChildAt(i), maxDepth, skipClass, levelSpace + " ", currentDepth + 1);
}
}
}