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