org.jhotdraw.draw
Class AbstractConstrainer

java.lang.Object
  org.jhotdraw.beans.AbstractBean
      org.jhotdraw.draw.AbstractConstrainer

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Constrainer

Direct Known Subclasses:

GridConstrainer

public abstract class AbstractConstrainer
extends AbstractBean
implements Constrainer

This abstract class can be extended to implement a Constrainer.

Version:

$Id: AbstractConstrainer.java 527 2009-06-07 14:28:19Z rawcoder $

Author:

Werner Randelshofer

See Also:

Serialized Form

Field Summary

protected javax.swing.event.ChangeEvent	changeEvent Only one ChangeEvent is needed per model instance since the event's only (read-only) state is the source property.
protected javax.swing.event.EventListenerList	listenerList The listeners waiting for model changes.

Fields inherited from class org.jhotdraw.beans.AbstractBean

propertySupport

Constructor Summary

AbstractConstrainer()
Creates a new instance.

Method Summary

void	addChangeListener(javax.swing.event.ChangeListener l) Adds a ChangeListener.
AbstractConstrainer	clone()
protected void	fireStateChanged() Runs each ChangeListener's stateChanged method.
void	removeChangeListener(javax.swing.event.ChangeListener l) Removes a ChangeListener.

Methods inherited from class org.jhotdraw.beans.AbstractBean

addPropertyChangeListener, addPropertyChangeListener, firePropertyChange, firePropertyChange, firePropertyChange, getPropertyChangeListeners, removePropertyChangeListener, removePropertyChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jhotdraw.draw.Constrainer

constrainAngle, constrainPoint, constrainRectangle, draw, rotateAngle, translatePoint, translateRectangle

Field Detail

listenerList

protected javax.swing.event.EventListenerList listenerList

The listeners waiting for model changes.

changeEvent

protected transient javax.swing.event.ChangeEvent changeEvent

Only one ChangeEvent is needed per model instance since the event's only (read-only) state is the source property. The source of events generated here is always "this".

Constructor Detail

AbstractConstrainer

public AbstractConstrainer()

Creates a new instance.

Method Detail

addChangeListener

public void addChangeListener(javax.swing.event.ChangeListener l)

Adds a ChangeListener.

Specified by:

addChangeListener in interface Constrainer

removeChangeListener

public void removeChangeListener(javax.swing.event.ChangeListener l)

Removes a ChangeListener.

Specified by:

removeChangeListener in interface Constrainer

fireStateChanged

protected void fireStateChanged()

Runs each ChangeListener's stateChanged method.

See Also:

EventListenerList

clone

public AbstractConstrainer clone()

Overrides:

clone in class AbstractBean