com.ohrasys.app
Class AbstractAppModel

java.lang.Object
  com.ohrasys.app.AbstractAppModel

All Implemented Interfaces:

AppControllerEventListener, java.awt.event.ActionListener, java.util.EventListener

public abstract class AbstractAppModel
extends java.lang.Object
implements AppControllerEventListener

A basic application model which should be subclassed and specialized by specific application implementations by implementing the processEvent method.

Field Summary

protected AppModelEventListener

controller The controller listening to this application model

Constructor Summary

AbstractAppModel()

Method Summary

void	actionPerformed(java.awt.event.ActionEvent evt) A method to perform an processing of actions received by the application controller.
protected void	notifyController(java.awt.event.ActionEvent event) Issues events from this application model to the application controller.
protected abstract java.awt.event.ActionEvent	processEvent(java.awt.event.ActionEvent evt) The method that processes incoming events.
void	setController(AppModelEventListener controller) Adds the controller as a listener of this model.
java.lang.String	toString() Returns a string representation of this object.

Methods inherited from class java.lang.Object

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

Field Detail

controller

protected transient AppModelEventListener controller

The controller listening to this application model

Constructor Detail

AbstractAppModel

public AbstractAppModel()

Method Detail

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent evt)

A method to perform an processing of actions received by the application controller.

Specified by:

actionPerformed in interface java.awt.event.ActionListener

Parameters:

evt - The event to process.

setController

public void setController(AppModelEventListener controller)
                   throws java.util.TooManyListenersException

Adds the controller as a listener of this model.

Parameters:

controller - The controller that will listen to this model

Throws:

java.util.TooManyListenersException - If more than one controller is being registered.

toString

public java.lang.String toString()

Returns a string representation of this object.

Overrides:

toString in class java.lang.Object

Returns:

The physical address of this instance.

processEvent

protected abstract java.awt.event.ActionEvent processEvent(java.awt.event.ActionEvent evt)

The method that processes incoming events.

Parameters:

evt - The incoming event from the controller

Returns:

The outgoing response event to the controller. This method should return null if no response is required. For instance if a the controller sends a request to change a model member variable but the new value is the same as the existing value, then no action need be taken, therefore no response should be generated.

notifyController

protected void notifyController(java.awt.event.ActionEvent event)

Issues events from this application model to the application controller.

Parameters:

event - The event to issue.