It might help if you explain a little what "next task" is, and also why 
these atoms are added in random order.

If you know how many atoms are added, and you want to wait until they 
are all onscreen you could use the appear event and a counter.

var count = 0;
eachAtom.addListener("appear", function()
{
   if (++count == numberOfAtoms)
   {
     this.nextTask();
   }
}, this);

As I said, if you give more detail we might be able to help more :)

Matt

Grykar wrote:
> Hi
> 
> I am adding a few atoms to layout. After all atoms were added I would like
> to start "next task".
> The atoms are added in random order therefore I don't know which one is
> last. It cannot be solved by add appear event to each atom due to "next
> task" should be start only one time and all atoms should be visible. 
> 
> 
> My question is how to trigger "next task" when all atoms appear on layout ?
> 
> 
> 
> Thanks,
>   Karol


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