001    /**
002     * ===========================================
003     * LibLayout : a free Java layouting library
004     * ===========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/liblayout/
007     *
008     * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     * ------------
026     * $Id: InstantiationState.java 3524 2007-10-16 11:26:31Z tmorgner $
027     * ------------
028     * (C) Copyright 2006-2007, by Pentaho Corporation.
029     */
030    package org.jfree.layouting;
031    
032    /**
033     * Creation-Date: 17.07.2006, 17:44:11
034     *
035     * @author Thomas Morgner
036     */
037    public class InstantiationState implements State
038    {
039      private Class c;
040    
041      public InstantiationState(final Class c)
042      {
043        this.c = c;
044      }
045    
046      /**
047       * Creates a restored instance of the saved component.
048       * <p/>
049       * By using this factory-like approach, we gain independence from having to
050       * know the actual implementation. This makes things a lot easier.
051       *
052       * @param layoutProcess the layout process that controls it all
053       * @return the saved state
054       * @throws org.jfree.layouting.StateException
055       *
056       */
057      public StatefullComponent restore(final LayoutProcess layoutProcess)
058              throws StateException
059      {
060        try
061        {
062          return (StatefullComponent) c.newInstance();
063        }
064        catch (Exception e)
065        {
066          throw new StateException();
067        }
068      }
069    }