The quick search popup appears when you start typing in a treeview,
e.g., in BeanTreeView:
By default, the search is by prefix, e.g., above, "D" is typed
and immediately "Dick" is selected, since that string starts with
"D". However, you can use this statement:
beanTreeView.setUseSubstringInQuickSearch(true);
...and then the entered text is used as a substring in the
search:
Above, the "r" wouldn't have matched anything by default, since
there's no string that starts with that...