By setting a filter function on the box one can decide dynamically which
of the rows to show. For instance, to implement a search function on a list that
filters the original list to only show the matching rows.
The filter_func will be called for each row after the call, and it will
continue to be called each time a row changes (via ListBox.rowChanged) or
when ListBox.invalidateFilter is called.
Note that using a filter function is incompatible with using a model
(see ListBox.bindModel).
By setting a filter function on the box one can decide dynamically which of the rows to show. For instance, to implement a search function on a list that filters the original list to only show the matching rows.
The filter_func will be called for each row after the call, and it will continue to be called each time a row changes (via ListBox.rowChanged) or when ListBox.invalidateFilter is called.
Note that using a filter function is incompatible with using a model (see ListBox.bindModel).