ChangeEventSupport

All Known Subinterfaces:

MultiLayerTransformer, MutableTransformer, VisualizationModel<V,E>

All Known Implementing Classes:

BasicTransformer, BasicVisualizationServer, DefaultChangeEventSupport, DefaultVisualizationModel, HyperbolicShapeTransformer, HyperbolicTransformer, LensTransformer, MagnifyShapeTransformer, MagnifyTransformer, MutableAffineTransformer, MutableTransformerDecorator, ObservableCachingLayout, PersistentLayoutImpl, SatelliteVisualizationViewer, VisualizationImageServer, VisualizationViewer
```
public interface ChangeEventSupport
```
the implementing class provides support for ChangeEvents.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addChangeListener(javax.swing.event.ChangeListener l)`
`void`	`fireStateChanged()`
`javax.swing.event.ChangeListener[]`	`getChangeListeners()`	Returns an array of all the `ChangeListener`s added with addChangeListener().
`void`	`removeChangeListener(javax.swing.event.ChangeListener l)`	Removes a ChangeListener.

- Method Detail
  - addChangeListener
```
void addChangeListener(javax.swing.event.ChangeListener l)
```
  - removeChangeListener
```
void removeChangeListener(javax.swing.event.ChangeListener l)
```
    Removes a ChangeListener.
    
    Parameters:
    
    l - the listener to be removed
  - getChangeListeners
```
javax.swing.event.ChangeListener[] getChangeListeners()
```
    Returns an array of all the ChangeListeners added with addChangeListener().
    
    Returns:
    
    all of the ChangeListeners added or an empty array if no listeners have been added
  - fireStateChanged
```
void fireStateChanged()
```