Triggers the positionChange event.
protected void onPositionChange( PositionChangeEvent event )
event
A PositionChangeEvent object that provides the event data.
The positionChange event occurs when the current position is moved within the grid, either programmatically or by the user.
When overriding onPositionChange, be sure to call super.onPositionChange.
See Also addOnPositionChange, removeOnPositionChange