| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jface.viewers; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * A selection containing elements. |
| */ |
| public interface IStructuredSelection extends ISelection { |
| /** |
| * Returns the first element in this selection, or <code>null</code> |
| * if the selection is empty. |
| * |
| * @return an element, or <code>null</code> if none |
| */ |
| public Object getFirstElement(); |
| /** |
| * Returns an iterator over the elements of this selection. |
| * |
| * @return an iterator over the selected elements |
| */ |
| public Iterator iterator(); |
| /** |
| * Returns the number of elements selected in this selection. |
| * |
| * @return the number of elements selected |
| */ |
| public int size(); |
| /** |
| * Returns the elements in this selection as an array. |
| * |
| * @return the selected elements as an array |
| */ |
| public Object[] toArray(); |
| /** |
| * Returns the elements in this selection as a <code>List</code>. |
| * |
| * @return the selected elements as a list |
| */ |
| public List toList(); |
| } |