/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.model.ui;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
public class StructuredChange implements IStructuredChange {
private List elements = null;
public StructuredChange() {
}
public StructuredChange(List elements) {
this.elements = elements;
}
public StructuredChange(Object element) {
this.elements = new ArrayList();
elements.add(element);
}
public StructuredChange(Object[] elements) {
if (elements!=null) {
this.elements = Arrays.asList(elements);
}
}
// IStructuredChange
public Object getFirstElement() {
return ((this.elements!=null)&&(this.elements.size()>0))?elements.get(0):null;
}
public Iterator iterator() {
return ((this.elements!=null)&&(this.elements.size()>0))?elements.iterator():null;
}
public int size() {
return ((this.elements!=null)&&(this.elements.size()>0))?elements.size():0;
}
public Object[] toArray() {
return ((this.elements!=null)&&(this.elements.size()>0))?elements.toArray():null;
}
public List toList() {
// copy elements into new list
ArrayList list = ((this.elements!=null)&&(this.elements.size()>0))?new ArrayList(elements):null;
return list;
}
// IChange
public boolean isEmpty() {
return ((this.elements!=null)&&(this.elements.size()>0))?false:true;
}
}