de.javagl.category

Interface CategoryListener<T>

Type Parameters:

T - The type of the elements in the Category

All Superinterfaces:

EventListener

public interface CategoryListener<T>
extends EventListener

Interface for classes that want to be informed about changes in a Category.

Note that when such a listener is added to a Category, it will receive events for changes in the Category that it was added to, as well as changes in one of the children of this category. The CategoryEvent that is passed to this listener will contain the category where the change took place. This is not necessarily the same as the one that the listener was added to.

Method Summary

Modifier and Type	Method and Description
void	childAdded(CategoryEvent<T> event) Will be called when a child was added to a Category
void	childRemoved(CategoryEvent<T> event) Will be called when a child was removed from a Category
void	elementsAdded(CategoryEvent<T> event) Will be called when elements have been added to a Category
void	elementsRemoved(CategoryEvent<T> event) Will be called when elements have been removed from a Category

Method Detail

elementsAdded

void elementsAdded(CategoryEvent<T> event)

Will be called when elements have been added to a Category

Parameters:

event - The event describing the change

elementsRemoved

void elementsRemoved(CategoryEvent<T> event)

Will be called when elements have been removed from a Category

Parameters:

event - The event describing the change

childAdded

void childAdded(CategoryEvent<T> event)

Will be called when a child was added to a Category

Parameters:

event - The event describing the change

childRemoved

void childRemoved(CategoryEvent<T> event)

Will be called when a child was removed from a Category

Parameters:

event - The event describing the change