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package ext.plantuml.com.ctreber.aclib.gui;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* <p>
* </p>
*
* <p>
* © 2002 Christian Treber, ct@ctreber.com
* </p>
*
* @author Christian Treber, ct@ctreber.com
*
*/
abstract public class MonitoredObject {
private List fListeners = new ArrayList();
public void addChangeListener(MOChangeListener pListener) {
fListeners.add(pListener);
}
public void removeChangeListener(MOChangeListener pListener) {
fListeners.remove(pListener);
}
void fireValueChanged() {
final Iterator lIt = fListeners.iterator();
while (lIt.hasNext()) {
MOChangeListener lListener = (MOChangeListener) lIt.next();
lListener.valueChanged(this);
}
}
/**
* <p>
* Check value agains (possibly defined) constraints.
*
* @return True if value is within range or range is not checked.
*/
abstract public boolean checkRange();
}
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