AccordionListener

All Known Implementing Classes:

AccordionListener.Adapter, AccordionListener.Listeners, TerraAccordionSkin
```
public interface AccordionListener
```
Accordion listener interface.

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`AccordionListener.Adapter`	Deprecated. Since 2.1 and Java 8 the interface itself has default implementations.
`static class`	`AccordionListener.Listeners`	Accordion listeners.

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`headerDataRendererChanged(Accordion accordion, Button.DataRenderer previousHeaderDataRenderer)`	Called when an accordion's header data renderer has changed.
`default void`	`panelInserted(Accordion accordion, int index)`	Called when a panel has been inserted into a accordion's panel sequence.
`default void`	`panelsRemoved(Accordion accordion, int index, Sequence<Component> removed)`	Called when a panel has been removed from an accordion's panel sequence.

- Method Detail
  - panelInserted
```
default void panelInserted(Accordion accordion,
                           int index)
```
    Called when a panel has been inserted into a accordion's panel sequence.
    
    Parameters:
    
    accordion - The accordion that has changed.
    
    index - The index of the newly inserted panel.
  - panelsRemoved
```
default void panelsRemoved(Accordion accordion,
                           int index,
                           Sequence<Component> removed)
```
    Called when a panel has been removed from an accordion's panel sequence.
    
    Parameters:
    
    accordion - The accordion that has changed.
    
    index - The starting index of the panel(s) that were removed.
    
    removed - The sequence of removed panels.
  - headerDataRendererChanged
```
default void headerDataRendererChanged(Accordion accordion,
                                       Button.DataRenderer previousHeaderDataRenderer)
```
    Called when an accordion's header data renderer has changed.
    
    Parameters:
    
    accordion - The accordion that was changed.
    
    previousHeaderDataRenderer - The previous version of the header data renderer.