ProcessStateNotifier (WildFly: Controller Core 19.0.0.Beta17 API)

All Known Implementing Classes:

ControlledProcessStateService
```
public interface ProcessStateNotifier
```
Allows callers to check the current ControlledProcessState.State of the process and to register for notifications of state changes.

Author:

Brian Stansberry (c) 2019 Red Hat Inc.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addPropertyChangeListener(PropertyChangeListener listener)`	Register a listener for changes in the current state.
`ControlledProcessState.State`	`getCurrentState()`	Gets the current state of the controlled process.
`void`	`removePropertyChangeListener(PropertyChangeListener listener)`	Remove a listener for changes in the current state.

- Method Detail
  - getCurrentState
```
ControlledProcessState.State getCurrentState()
```
    Gets the current state of the controlled process.
    
    Returns:
    
    the current state. Will not be null
  - addPropertyChangeListener
```
void addPropertyChangeListener(PropertyChangeListener listener)
```
    Register a listener for changes in the current state. The listener will be notified with a PropertyChangeEvent whose property name will be currentState. If listener is null, no exception is thrown and no action is taken.
    
    Parameters:
    
    listener - the listener
  - removePropertyChangeListener
```
void removePropertyChangeListener(PropertyChangeListener listener)
```
    Remove a listener for changes in the current state. If listener was added more than once, it will be notified one less time after being removed. If listener is null, or was never added, no exception is thrown and no action is taken.
    
    Parameters:
    
    listener - the listener