Initializing children of a custom component

Archived
1

I’m writing a custom component that extends LayoutGroup and I’d like to set up event observers on children. When my init() sub gets called, m.top has no children yet so I can’t access any yet. In later methods (like “onKeyEvent”) I can see the children there but obviously I don’t want to set everything up multiple times.

Any help would be appreciated!

tim

2

Ok, this might not have been clear. These are children not specified by my component directly. Once again, similar to a LayoutGroup. For example:

<MyComponent>
    <Button .../>
    <Label .../>
    <Button .../>
</MyComponent>
3

Ok, I got this working. If anyone else is curious, it looks like the correct solution is to observe the “change” property…

https://developer.roku.com/docs/references/scenegraph/abstract-nodes/node.md

I get an “add” operation when each child is added. Cool!