platform/core.startup/src/org/netbeans/core/startup/ProxyTask.java

/*
 * 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.netbeans.core.startup;

import java.util.Collection;
import org.openide.util.Task;
import org.openide.util.TaskListener;

/**
 *
 * @author Jaroslav Tulach <jtulach@netbeans.org>
 */
final class ProxyTask extends Task implements TaskListener {
    private int cnt;

    public ProxyTask(Collection<? extends Task> waitFor) {
        super(null);
        this.cnt = waitFor.size();
        notifyRunning();
        for (Task t : waitFor) {
            t.addTaskListener(this);
        }
    }

    @Override
    public synchronized void taskFinished(Task task) {
        if (--cnt == 0) {
            notifyFinished();
        }
    }
}