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The basic runtime tools and interfaces for intarsys components.
There is a newer version: 4.11
/*
 * Copyright (c) 2012, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.tools.concurrent;

import de.intarsys.tools.event.Event;
import de.intarsys.tools.event.INotificationListener;

/**
 * experimental
 */
public class TaskStep extends AbstractFutureTask {

	final private TaskSequence sequence;

	final private Runnable task;

	final private int percent;

	private INotificationListener listenSubTask = new INotificationListener() {

		public void handleEvent(Event event) {
			onSubTaskChanged(event.getSource());
		}

	};

	private int start;

	public TaskStep(TaskSequence sequence, Runnable task, int percent) {
		super();
		this.sequence = sequence;
		this.task = task;
		this.percent = percent;
		// task.addNotificationListener(AttributeChangedEvent.ID,
		// listenSubTask);
	}

	@Override
	protected R compute() throws Exception {
		// start = sequence.getWorkCurrent();
		task.run();
		return null;
		// return task.get();
	}

	public int getPercent() {
		return percent;
	}

	public TaskSequence getSequence() {
		return sequence;
	}

	protected void onSubTaskChanged(Object task) {
		// int taskPart = (int) (task.getProgress() * ((float) getPercent() /
		// 100));
		// sequence.setWorkCurrent(task.getWorkMessage(), start + taskPart);
	}

}