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## org.richfaces.event
Interface PanelToggleSource

    public interface PanelToggleSource

Since:
  2010-08-27
Author:
  akolonitsky

Method Summary
`void` | `addPanelToggleListener(PanelToggleListener listener)` Add a new `PanelToggleListener` to the set of listeners interested in being notified when `PanelToggleEvent`s occur.
`PanelToggleListener[]` | `getPanelToggleListeners()` Return the set of registered `PanelToggleListener`s for this instance.
`void` | `removePanelToggleListener(PanelToggleListener listener)` Remove an existing `PanelToggleListener` (if any) from the set of listeners interested in being notified when `PanelToggleEvent`s occur.

Method Detail

### addPanelToggleListener

    void addPanelToggleListener(PanelToggleListener listener)

  Add a new `PanelToggleListener` to the set of listeners interested in being notified when `PanelToggleEvent`s occur.

  Parameters:
    `listener` - The `PanelToggleListener` to be added
  Throws:
    `NullPointerException` - if `listener` is `null`

### getPanelToggleListeners

    PanelToggleListener[] getPanelToggleListeners()

  Return the set of registered `PanelToggleListener`s for this instance. If there are no registered listeners, a zero-length array is returned.

### removePanelToggleListener

    void removePanelToggleListener(PanelToggleListener listener)

  Remove an existing `PanelToggleListener` (if any) from the set of listeners interested in being notified when `PanelToggleEvent`s occur.

  Parameters:
    `listener` - The `PanelToggleListener` to be removed
  Throws:
    `NullPointerException` - if `listener` is `null`

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