pub trait ContainerImplExt: ObjectSubclass {
fn parent_add(&self, container: &Self::Type, widget: &Widget);
fn parent_remove(&self, container: &Self::Type, widget: &Widget);
fn parent_check_resize(&self, container: &Self::Type);
fn parent_set_focus_child(
&self,
container: &Self::Type,
widget: Option<&Widget>
);
fn parent_child_type(&self, container: &Self::Type) -> Type;
fn parent_path_for_child(
&self,
container: &Self::Type,
widget: &Widget
) -> WidgetPath;
fn parent_forall(
&self,
container: &Self::Type,
include_internals: bool,
callback: &Callback
);
}