/**
* @(#)AbstractScrollManager.java
*
* Copyright 2002 EGANTT LLP. All rights reserved.
* PROPRIETARY/QPL. Use is subject to license terms.
*/
package com.egantt.swing.scroll.manager;
import com.egantt.swing.scroll.ScrollManager;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
/**
* Overrides the ScrollModel interface in order to hide non applicable methods
* the sun interface.
*/
public abstract class AbstractScrollManager implements ScrollManager
{
protected final List <ChangeListener> listeners = new ArrayList <ChangeListener>(0);
protected transient boolean isAdjusting;
// _________________________________________________________________________
public boolean getValueIsAdjusting()
{
return isAdjusting;
}
// _________________________________________________________________________
public final void setValueIsAdjusting(boolean isAdjusting)
{
this.isAdjusting = isAdjusting;
}
// _________________________________________________________________________
public void addChangeListener(ChangeListener listener)
{
listeners.add(listener);
}
public void removeChangeListener(ChangeListener listener)
{
listeners.remove(listener);
}
// _________________________________________________________________________
/**
* Dummy method not applicable
*/
public final void setExtent(int n)
{
}
/**
* Dummy method not applicable
*/
public final void setMinimum(int n)
{
}
/**
* Dummy method not applicable
*/
public final void setMaximum(int n)
{
}
/**
* Dummy method not applicable
*/
public final void setRangeProperties(int newValue, int newExtent, int newMin, int newMax, boolean adjusting)
{
}
// _________________________________________________________________________
/**
* Fire notification of state changes
*/
protected void fireChanged(ChangeEvent changeEvent)
{
for (Iterator iter = listeners.iterator(); iter.hasNext();)
((ChangeListener) iter.next()).stateChanged(changeEvent);
}
}