ViewportListener

All Known Implementing Classes:

ScrollPaneSkin, TerraPanoramaSkin, TerraScrollPaneSkin, ViewportListener.Adapter, ViewportListener.Listeners
```
public interface ViewportListener
```
Viewport listener interface.

Nested Class Summary

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

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`scrollLeftChanged(Viewport scrollPane, int previousScrollLeft)`	Called when a viewport's scroll left has changed.
`default void`	`scrollTopChanged(Viewport scrollPane, int previousScrollTop)`	Called when a viewport's scroll top has changed.
`default void`	`viewChanged(Viewport scrollPane, Component previousView)`	Called when a viewport's view component has changed.

- Method Detail
  - scrollTopChanged
```
default void scrollTopChanged(Viewport scrollPane,
                              int previousScrollTop)
```
    Called when a viewport's scroll top has changed.
    
    Parameters:
    
    scrollPane - The viewport that has scrolled.
    
    previousScrollTop - The previous top scroll position.
  - scrollLeftChanged
```
default void scrollLeftChanged(Viewport scrollPane,
                               int previousScrollLeft)
```
    Called when a viewport's scroll left has changed.
    
    Parameters:
    
    scrollPane - The viewport that has been scrolled.
    
    previousScrollLeft - The previous left scroll position.
  - viewChanged
```
default void viewChanged(Viewport scrollPane,
                         Component previousView)
```
    Called when a viewport's view component has changed.
    
    Parameters:
    
    scrollPane - The viewport whose view has changed.
    
    previousView - What the view (or the scrollable component) used to be.