de.aristaflow.adept2.ui.updatemanager

Class PVPUpdateManager

java.lang.Object

AbstractADEPT2Service

de.aristaflow.adept2.ui.updatemanager.PVPUpdateManager

public class PVPUpdateManager
extends AbstractADEPT2Service

This class manages a set of ChangeListeners for an object which are notified when properties of that object change.
The purpose of this is to remove the burden of change-notification from the process model (i.e. Node, Edge, Process, ...)
Instead ChangeOperations, which alter a Process, should notify the UpdateManager of all the objects that have been affected by the change. The UpdateManager will then take care to notify all graphical representations of these elements.
Preferably ChangeOperations will give detailed feedback as to which properties have actually been changed, so that updating the visual model can be done with minimal effort.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	PVPUpdateManager.UpdateRequest The UpdateRequest is attached to the SWT Default thread responsible for UI updates.

Constructor Summary

Constructors

Constructor and Description
PVPUpdateManager(Configuration configuration, Registry registry) The update manager could be called as an ADEPT2Service

Method Summary

Modifier and Type	Method and Description
void	addListener(java.lang.Object what, ChangeListener callback)
void	addListener(java.lang.Object what, ChangeListener callback, int priority)
protected void	asyncSendPropertyChanges() Property change events are published asynchronous.
void	firePropertyChange(java.lang.Object procElement, java.lang.Object prop) Notify all interested parties of changes to a Process element
void	firePropertyChange(java.lang.Object procElement, java.lang.Object prop, java.lang.Object newValue) Notify all interested parties of changes to a Process element
void	firePropertyChange(java.lang.Object procElement, java.lang.Object prop, java.lang.Object oldValue, java.lang.Object newValue) Notify all interested parties of changes to a Process element
protected void	queuePropertyChanges(java.lang.Object procElement, PropertyChangeEvent pce) Send PropertyChangeEvent pce to all listeners for object procElement
void	removeListener(java.lang.Object what, ChangeListener callback)
void	sendPropertyChanges()

Methods inherited from class java.lang.Object

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

Constructor Detail

PVPUpdateManager

public PVPUpdateManager(Configuration configuration,
                        Registry registry)

The update manager could be called as an ADEPT2Service

Parameters:

configuration - the configuration of the update manager

registry - the registry of the update manager

Method Detail

addListener

public void addListener(java.lang.Object what,
                        ChangeListener callback)

addListener

public void addListener(java.lang.Object what,
                        ChangeListener callback,
                        int priority)

removeListener

public void removeListener(java.lang.Object what,
                           ChangeListener callback)

firePropertyChange

public void firePropertyChange(java.lang.Object procElement,
                               java.lang.Object prop)

Notify all interested parties of changes to a Process element

Parameters:

procElement - The altered Process element

prop - The altered property

firePropertyChange

public void firePropertyChange(java.lang.Object procElement,
                               java.lang.Object prop,
                               java.lang.Object newValue)

Notify all interested parties of changes to a Process element

Parameters:

procElement - The altered Process element

prop - The altered property

newValue - The new value of the property

firePropertyChange

public void firePropertyChange(java.lang.Object procElement,
                               java.lang.Object prop,
                               java.lang.Object oldValue,
                               java.lang.Object newValue)

Notify all interested parties of changes to a Process element

Parameters:

procElement - The altered Process element

prop - The altered property

oldValue - the old value of the property

newValue - The new value of the property

queuePropertyChanges

protected void queuePropertyChanges(java.lang.Object procElement,
                                    PropertyChangeEvent pce)

Send PropertyChangeEvent pce to all listeners for object procElement

Parameters:

procElement - the key

pce - the event

sendPropertyChanges

public void sendPropertyChanges()

asyncSendPropertyChanges

protected void asyncSendPropertyChanges()

Property change events are published asynchronous. The request to execute this method is sent to the default display, rather than the current display of the thread calling sendPropertyChanges() (which would be wrong.)