net.refractions.udig.ui.operations
Class AbstractOpFilter

java.lang.Object
  net.refractions.udig.ui.operations.AbstractOpFilter

All Implemented Interfaces:

OpFilter

public abstract class AbstractOpFilter
extends java.lang.Object
implements OpFilter

Abstract implementation that can be extended by OpFilter implementers. Manages listeners primarily.

Since:

1.1.0

Author:

Jesse

Field Summary

protected java.util.Set<IOpFilterListener>

listeners

Fields inherited from interface net.refractions.udig.ui.operations.OpFilter

FALSE, TRUE

Constructor Summary

AbstractOpFilter()

Method Summary

void	addListener(IOpFilterListener listener) Adds a listener to listen for events indicating the value has changed.
protected void	notifyListeners(java.lang.Object changed) Notifies listener that the value of the filter has changed.
void	removeListener(IOpFilterListener listener) Removes a listeners

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.refractions.udig.ui.operations.OpFilter

accept, canCacheResult, isBlocking

Field Detail

listeners

protected java.util.Set<IOpFilterListener> listeners

Constructor Detail

AbstractOpFilter

public AbstractOpFilter()

Method Detail

addListener

public void addListener(IOpFilterListener listener)

Description copied from interface: OpFilter

Adds a listener to listen for events indicating the value has changed. Listeners should only be added if OpFilter.canCacheResult() returns true.

Specified by:

addListener in interface OpFilter

Parameters:

listener - listener to add

removeListener

public void removeListener(IOpFilterListener listener)

Description copied from interface: OpFilter

Removes a listeners

Specified by:

removeListener in interface OpFilter

Parameters:

listener - listener to remove

notifyListeners

protected void notifyListeners(java.lang.Object changed)

Notifies listener that the value of the filter has changed.