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## edu.uci.ics.jung.utils
Interface ChangeEventSupport

All Known Subinterfaces:
  MutableTransformer, PersistentLayout, VisualizationModel

All Known Implementing Classes:
  AbstractLayout, DefaultChangeEventSupport, DefaultVisualizationModel, HyperbolicTransformer, LayoutDecorator, LensTransformer, MagnifyTransformer, MutableAffineTransformer, MutableTransformerDecorator, PersistentLayoutImpl, VisualizationViewer

public interface ChangeEventSupport

Method Summary
`void` | `addChangeListener(ChangeListener l)`
`void` | `fireStateChanged()`
`ChangeListener[]` | `getChangeListeners()` Returns an array of all the `ChangeListener`s added with addChangeListener().
`void` | `removeChangeListener(ChangeListener l)` Removes a ChangeListener.

Method Detail

### addChangeListener

    public void addChangeListener(ChangeListener l)

### removeChangeListener

    public void removeChangeListener(ChangeListener l)

  Removes a ChangeListener.

  Parameters:
    `l` - the listener to be removed

### getChangeListeners

    public ChangeListener[] getChangeListeners()

  Returns an array of all the `ChangeListener`s added with addChangeListener().

  Returns:
    all of the `ChangeListener`s added or an empty array if no listeners have been added

### fireStateChanged

    public void fireStateChanged()

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