I have another CellTree question but this one is weirder.
I am trying to make a generalized tree model. For now it just uses
strings, plan is to make it more exciting later.
Two things can go into this tree:
static class Category extends Leaf {
Category(String label) {
super(label);
}
List<Leaf> leaves = new ArrayList<Leaf>();
public void add(Leaf leaf) {
leaves.add(leaf);
}
}
static class Leaf {
public Leaf(String label) {
this.label = label;
}
String label;
}
When I display this tree, I see, under my categories, a blank space -
like it has a null entry or something. If I click on that space, the
entire tree DISAPPEARS! The whole panel that it's in just goes blank.
What on earth would make it do that?
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