.. java:import:: ch.epfl.leb.sass.logging Listener

.. java:import:: ch.epfl.leb.sass.logging Observable

.. java:import:: ch.epfl.leb.sass.logging WrongMessageTypeException

.. java:import:: java.util ArrayList

.. java:import:: java.util.logging Level

.. java:import:: java.util.logging Logger

AbstractObservable
==================

.. java:package:: ch.epfl.leb.sass.logging.internal
   :noindex:

.. java:type:: public abstract class AbstractObservable implements Observable

   Provides functionality common to all Observables.

   :author: Kyle M. Douglass

Fields
------
LOGGER
^^^^^^

.. java:field:: protected static final Logger LOGGER
   :outertype: AbstractObservable

changed
^^^^^^^

.. java:field:: protected boolean changed
   :outertype: AbstractObservable

   A flag indicating whether the state of this object has changed. This flag is used only when notifying listeners of a state change.

listeners
^^^^^^^^^

.. java:field:: protected ArrayList<Listener> listeners
   :outertype: AbstractObservable

   The list of listeners that are tracking this object.

Methods
-------
addListener
^^^^^^^^^^^

.. java:method:: @Override public void addListener(Listener listener)
   :outertype: AbstractObservable

   Adds a new listener to the list of subscribed listeners.

deleteListener
^^^^^^^^^^^^^^

.. java:method:: @Override public void deleteListener(Listener listener)
   :outertype: AbstractObservable

   Deletes a listener from the list of subscribed listeners.

notifyListeners
^^^^^^^^^^^^^^^

.. java:method:: @Override public void notifyListeners()
   :outertype: AbstractObservable

   Notifies all subscribed listeners to a change in the Observable's state. This method should only be called if setChanged() has been called.

notifyListeners
^^^^^^^^^^^^^^^

.. java:method:: @Override public void notifyListeners(Object data)
   :outertype: AbstractObservable

   Notifies all subscribed listeners of a state change and pushes the data.

   :param data: The data object to push to the listeners.

setChanged
^^^^^^^^^^

.. java:method:: @Override public void setChanged()
   :outertype: AbstractObservable

   Indicates that the state of this Observable has been changed.