FunctionListener (JMRI API)

All Superinterfaces:

java.util.EventListener

All Known Implementing Classes:

FunctionPanel, LearnFunctionPanel
```
public interface FunctionListener
extends java.util.EventListener
```
A Listener for a function state change.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`notifyFunctionLockableChanged(int functionNumber, boolean isLockable)`	Get notification that a function's lockable status has changed.
`void`	`notifyFunctionStateChanged(int functionNumber, boolean isOn)`	Receive notification that a function has changed state.

- Method Detail
  - notifyFunctionStateChanged
```
void notifyFunctionStateChanged(int functionNumber,
                                boolean isOn)
```
    Receive notification that a function has changed state.
    
    Parameters:
    
    functionNumber - The id of the function
    
    isOn - True if the function is activated, false otherwise.
  - notifyFunctionLockableChanged
```
void notifyFunctionLockableChanged(int functionNumber,
                                   boolean isLockable)
```
    Get notification that a function's lockable status has changed.
    
    Parameters:
    
    functionNumber - The function that has changed (0-9).
    
    isLockable - True if the function is now Lockable (continuously active).