/*******************************************************************************
 * Copyright (c) 2003, 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM - Initial API and implementation
 *******************************************************************************/
package org.eclipse.core.runtime.jobs;

import org.eclipse.core.runtime.IStatus;

/**
 * An event describing a change to the state of a job.
 * 
 * @see IJobChangeListener
 * @since 3.0
 * @noimplement This interface is not intended to be implemented by clients.
 * @noextend This interface is not intended to be extended by clients.
 */
public interface IJobChangeEvent {
	/**
	 * The amount of time in milliseconds to wait after scheduling the job before it 
	 * should be run, or <code>-1</code> if not applicable for this type of event.  
	 * This value is only applicable for the <code>scheduled</code> event.
	 * 
	 * @return the delay time for this event
	 */
	public long getDelay();

	/**
	 * The job on which this event occurred.
	 * 
	 * @return the job for this event
	 */
	public Job getJob();

	/**
	 * The result returned by the job's run method, or <code>null</code> if
	 * not applicable.  This value is only applicable for the <code>done</code> event.
	 * 
	 * @return the status for this event
	 */
	public IStatus getResult();
}
