portaview.model
Class ObservableCollection

java.lang.Object
  java.util.Observable
      portaview.model.ObservableCollection

Direct Known Subclasses:

AlbumCollection, PortaViewCollection

public class ObservableCollection

extends java.util.Observable

Generic collection class that can be observed. One needs to use this class if there is a collection of items that they want to observe when added or removed from this collection.

Author:

William Lee

Constructor Summary

ObservableCollection()

Method Summary

void	add(java.lang.Object obj) Adds an object to this collection.
void	addAll(ObservableCollection col) Add all the element in col to this collecion.
void	clear() Clear the collection.
java.util.Iterator	iterator() Returns the iterator for this collection.
void	notifyChange() Can be called externally to change notify the observers of the observables.
void	notifyChildrenObservers() Notify the children's observers.
void	remove(java.lang.Object obj) Removes an object and notify the observing observers.
int	size() Returns the size of this collection.

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ObservableCollection

public ObservableCollection()

Method Detail

iterator

public java.util.Iterator iterator()

Returns the iterator for this collection.

Returns:

iterator for the collection.

clear

public void clear()

Clear the collection.

notifyChange

public void notifyChange()

Can be called externally to change notify the observers of the observables.

notifyChildrenObservers

public void notifyChildrenObservers()

Notify the children's observers. If the instance inside this collection extends the Observable class, notify the change also.

addAll

public void addAll(ObservableCollection col)

Add all the element in col to this collecion.

Parameters:

col - collection to add to this collection.

size

public int size()

Returns the size of this collection.

Returns:

int representing the size.

remove

public void remove(java.lang.Object obj)

Removes an object and notify the observing observers. This will fire the event.

Parameters:

obj - object within this collection to remove.

add

public void add(java.lang.Object obj)

Adds an object to this collection. This will fire the event.

Parameters:

obj - object to add.