/*******************************************************************************
 * Copyright (c) 2000, 2005 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 Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.gef.examples.flow.model;

import java.util.ArrayList;
import java.util.List;

/**
 * A Structured activity is an activity whose execution is determined by some internal
 * structure.
 * @author hudsonr
 */
public class StructuredActivity
	extends Activity
{

static final long serialVersionUID = 1;

private static int count;

protected List children = new ArrayList();

public StructuredActivity() {}

public void addChild(Activity child){
	addChild(child, -1);
}

public void addChild(Activity child, int index){
	if (index >= 0)
		children.add(index,child);
	else
		children.add(child);
	fireStructureChange(CHILDREN, child);
}

public List getChildren(){
	return children;
}

public String getNewID() {
	return Integer.toString(count++);
}

public void removeChild(FlowElement child){
	children.remove(child);
	fireStructureChange(CHILDREN, child);
}

}