class RowWidget extends Widget {
// ...
public void collectChildren(Set result) {
for (Widget child : this.children) {
if (child.isVisible()) {
result.add(children);
child.collectChildren(result);
}
}
}
}
class ColumnWidget extends Widget {
// ...
public void collectChildren(Set result) {
for (Widget child : this.children) {
if (child.isVisible()) {
result.add(children);
child.collectChildren(result);
}
}
}
}