blob: 2c8ca3eaa5e550379b7bd9bfb9111eeea4c82d92 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.bcel.verifier;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;
/**
* This class implements an adapter; it implements both a Swing ListModel and a VerifierFactoryObserver.
*
*/
public class VerifierFactoryListModel implements VerifierFactoryObserver, javax.swing.ListModel<String> {
private final List<ListDataListener> listeners = new ArrayList<>();
private final Set<String> cache = new TreeSet<>();
public VerifierFactoryListModel() {
VerifierFactory.attach(this);
update(null); // fill cache.
}
@Override
public synchronized void update(final String s) {
final Verifier[] verifiers = VerifierFactory.getVerifiers();
final int num_of_verifiers = verifiers.length;
cache.clear();
for (final Verifier verifier : verifiers) {
cache.add(verifier.getClassName());
}
for (final ListDataListener listener : listeners) {
final ListDataEvent e = new ListDataEvent(this, ListDataEvent.CONTENTS_CHANGED, 0, num_of_verifiers - 1);
listener.contentsChanged(e);
}
}
@Override
public synchronized void addListDataListener(final ListDataListener l) {
listeners.add(l);
}
@Override
public synchronized void removeListDataListener(final javax.swing.event.ListDataListener l) {
listeners.remove(l);
}
@Override
public synchronized int getSize() {
return cache.size();
}
@Override
public synchronized String getElementAt(final int index) {
return cache.toArray(new String[cache.size()])[index];
}
}