pub trait TreeModelSortExt: 'static {
// Required methods
fn clear_cache(&self);
fn convert_child_iter_to_iter(
&self,
child_iter: &TreeIter
) -> Option<TreeIter>;
fn convert_child_path_to_path(
&self,
child_path: &TreePath
) -> Option<TreePath>;
fn convert_iter_to_child_iter(&self, sorted_iter: &TreeIter) -> TreeIter;
fn convert_path_to_child_path(
&self,
sorted_path: &TreePath
) -> Option<TreePath>;
fn model(&self) -> TreeModel;
fn iter_is_valid(&self, iter: &TreeIter) -> bool;
fn reset_default_sort_func(&self);
}