filebot/source/net/sourceforge/tuned/ListChangeSynchronizer.java

51 lines
1.1 KiB
Java

package net.sourceforge.tuned;
import java.util.List;
import ca.odell.glazedlists.EventList;
import ca.odell.glazedlists.event.ListEvent;
import ca.odell.glazedlists.event.ListEventListener;
public class ListChangeSynchronizer<E> implements ListEventListener<E> {
private final List<E> target;
public ListChangeSynchronizer(EventList<E> source, List<E> target) {
this.target = target;
source.addListEventListener(this);
}
public void listChanged(ListEvent<E> listChanges) {
EventList<E> source = listChanges.getSourceList();
// update target list
while (listChanges.next()) {
int index = listChanges.getIndex();
int type = listChanges.getType();
switch (type) {
case ListEvent.INSERT:
target.add(index, source.get(index));
break;
case ListEvent.UPDATE:
target.set(index, source.get(index));
break;
case ListEvent.DELETE:
target.remove(index);
break;
}
}
}
public static <E> ListChangeSynchronizer<E> syncEventListToList(EventList<E> source, List<E> target) {
return new ListChangeSynchronizer<E>(source, target);
}
}