/*
* TV-Browser
* Copyright (C) 04-2003 Martin Oberhauser (darras@users.sourceforge.net)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* CVS information:
* $RCSfile$
* $Source$
* $Date: 2008-02-05 22:45:05 +0100 (Tue, 05 Feb 2008) $
* $Author: bananeweizen $
* $Revision: 4246 $
*/
package util.settings;
import java.util.Vector;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
/**
*
*
* @author Til Schneider, www.murfman.de
*/
public abstract class Property {
private PropertyManager mManager;
private String mKey;
/** Vector for Change-Listeners */
private Vector<ChangeListener> mChangeList;
public Property(PropertyManager manager, String key) {
mManager = manager;
mKey = key;
mChangeList = null; // defer initialization to save memory
// Register this property
mManager.addProperty(this);
}
protected void setProperty(String value) {
mManager.setProperty(mKey, value);
fireChangeEvent();
}
protected String getProperty() {
return mManager.getProperty(mKey);
}
public String getKey() {
return mKey;
}
/**
* Add a ChangeListener to this Property. Everytime this Property is changed,
* a event will be fired
*
* @param l
* Listener to add
*/
public void addChangeListener(ChangeListener l) {
if (mChangeList == null) {
mChangeList = new Vector<ChangeListener>(1);
}
mChangeList.add(l);
}
/**
* Remove a ChangeListener from this Property
*
* @param l
* Listener to remove
*/
public void removeChangeListener(ChangeListener l) {
if (mChangeList == null) {
return;
}
mChangeList.remove(l);
}
/**
* Fire ChangeEvent and inform every Listener about changes in this Property
*/
public void fireChangeEvent() {
if (mChangeList == null) {
return;
}
for (int i = 0; i < mChangeList.size(); i++) {
ChangeListener l = mChangeList.get(i);
l.stateChanged(new ChangeEvent(this));
}
}
protected abstract void clearCache();
}