Observable (appNG Parent 2.0.0-SNAPSHOT API)

Type Parameters:

T - the type which is observed

All Known Subinterfaces:

Document

All Known Implementing Classes:

ObservableDelegate, SimpleDocument
```
public interface Observable<T>
```
An Observable can be observed by multiple Observers and notify them of changes by firing an Observable.Event .

Author:

Matthias Müller

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class Observable.Event
An Observable notifies it's Observers by firing an Observable.Event.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`addObserver(Observer<? super T> observer)`	Adds an `Observer`.
`void`	`notifyObservers(Observable.Event event)`	Notifies the `Observer`s.
`boolean`	`removeObserver(Observer<? super T> observer)`	Removes an `Observer`.

- Method Detail
  - addObserver
```
boolean addObserver(Observer<? super T> observer)
```
    Adds an Observer.
    
    Parameters:
    
    observer - the Observer to be added
    
    Returns:
    
    true if adding the Observer was successful, false otherwise
  - removeObserver
```
boolean removeObserver(Observer<? super T> observer)
```
    Removes an Observer.
    
    Parameters:
    
    observer - the Observer to be removed
    
    Returns:
    
    true if removing the Observer was successful, false otherwise
  - notifyObservers
```
void notifyObservers(Observable.Event event)
```
    Notifies the Observers.
    
    Parameters:
    
    event - an Observable.Event