The model will use the filter to determine if it should include items
or not by calling gtk.filter.Filter.match for each item and only
keeping the ones that the function returns true for.
Filters may change what items they match through their lifetime. In that
case, they will emit the gtk.filter.Filter.changed signal to notify
that previous filter results are no longer valid and that items should
be checked again via gtk.filter.Filter.match.
GTK provides various pre-made filter implementations for common filtering
operations. These filters often include properties that can be linked to
various widgets to easily allow searches.
However, in particular for large lists or complex search methods, it is
also possible to subclass gtk.filter.Filter and provide one's own filter.
A gtk.filter.Filter object describes the filtering to be performed by a gtk.filter_list_model.FilterListModel.
The model will use the filter to determine if it should include items or not by calling gtk.filter.Filter.match for each item and only keeping the ones that the function returns true for.
Filters may change what items they match through their lifetime. In that case, they will emit the gtk.filter.Filter.changed signal to notify that previous filter results are no longer valid and that items should be checked again via gtk.filter.Filter.match.
GTK provides various pre-made filter implementations for common filtering operations. These filters often include properties that can be linked to various widgets to easily allow searches.
However, in particular for large lists or complex search methods, it is also possible to subclass gtk.filter.Filter and provide one's own filter.