IBreadCrumbModelListener (Wicket Extensions 9.22.0 API)

All Superinterfaces:

EventListener, org.apache.wicket.util.io.IClusterable, Serializable

All Known Implementing Classes:

BreadCrumbBar.BreadCrumbsListView
```
public interface IBreadCrumbModelListener
extends EventListener, org.apache.wicket.util.io.IClusterable
```
Bread crumb model listeners get notified by bread crumb models of activation, addition and removal events.

Author:

Eelco Hillenius

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`breadCrumbActivated(IBreadCrumbParticipant previousParticipant, IBreadCrumbParticipant breadCrumbParticipant)`	Called when a bread crumb was activated.
`default void`	`breadCrumbAdded(IBreadCrumbParticipant breadCrumbParticipant)`	Called when a bread crumb was added to the model.
`default void`	`breadCrumbRemoved(IBreadCrumbParticipant breadCrumbParticipant)`	Called when a bread crumb was removed from the model.

- Method Detail
  - breadCrumbActivated
```
default void breadCrumbActivated(IBreadCrumbParticipant previousParticipant,
                                 IBreadCrumbParticipant breadCrumbParticipant)
```
    Called when a bread crumb was activated.
    
    Parameters:
    
    previousParticipant - The previously active participant
    
    breadCrumbParticipant - The bread crumb that was activated.
  - breadCrumbAdded
```
default void breadCrumbAdded(IBreadCrumbParticipant breadCrumbParticipant)
```
    Called when a bread crumb was added to the model.
    
    Parameters:
    
    breadCrumbParticipant - The new bread crumb
  - breadCrumbRemoved
```
default void breadCrumbRemoved(IBreadCrumbParticipant breadCrumbParticipant)
```
    Called when a bread crumb was removed from the model.
    
    Parameters:
    
    breadCrumbParticipant - The bread crumb that was removed