public abstract class DialogCallbacks
This interface defines callback methods that are implemented by a
a Traversable-based Launcher dialog for the sake of
Traversable dailog that need to update the state of the
Launcher dialog's components. A launcher dialog receives an instance of
DialogCallbacks through the TraversableContext
passed into its onEntry(...) method:
A dailog calls this method to update the status of the
OK button. if the argumentvalue of false
means that the OK button must be disabled. A value of
true means that the OK button should be enabled.
However, the launcher dialog is allowed to override the true
value and put a button in a disabled state, if appropriate.