Package ch.bailu.gtk.gio

Interface MenuModel.OnItemsChanged

Enclosing class:

MenuModel

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface MenuModel.OnItemsChanged

Method Summary

Modifier and Type	Method	Description
void	onItemsChanged(int position, int removed, int added)	Emitted when a change has occurred to the menu.

Method Details

onItemsChanged

void onItemsChanged(int position,
 int removed,
 int added)

Emitted when a change has occurred to the menu.

The only changes that can occur to a menu is that items are removed
or added. Items may not change (except by being removed and added
back in the same location). This signal is capable of describing
both of those changes (at the same time).

The signal means that starting at the index @position, @removed
items were removed and @added items were added in their place. If
@removed is zero then only items were added. If @added is zero
then only items were removed.

As an example, if the menu contains items a, b, c, d (in that
order) and the signal (2, 1, 3) occurs then the new composition of
the menu will be a, b, _, _, _, d (with each _ representing some
new item).

Signal handlers may query the model (particularly the added items)
and expect to see the results of the modification that is being
reported. The signal is emitted after the modification.

Parameters:

position - the position of the change

removed - the number of items removed

added - the number of items added