templateparametercarrier.java

报表设计软件,很好的

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * ------------------------------
 * TemplateParameterCarrier.java
 * ------------------------------
 * (C)opyright 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: TemplateParameterCarrier.java,v 1.2 2004/04/20 18:55:01 taqua Exp $
 *
 * Changes
 * -------------------------
 * 08.11.2003 : Initial version
 *
 */

package org.jfree.designer.visualeditor.elementeditor;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JLabel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.jfree.report.modules.parser.ext.factory.templates.TemplateDescription;

public final class TemplateParameterCarrier
        implements PropertyChangeListener
{
  private final JLabel label;
  private final PropertyEditorContainer container;
  private final TemplateDescription templateDescription;
  private final String name;
  private ChangeListener listener;

  public TemplateParameterCarrier (final String name,
                                   final TemplateDescription template,
                                   final PropertyEditorContainer container)
  {
    this.name = name;
    this.label = new JLabel(name);
    this.templateDescription = template;
    this.container = container;
    this.container.addPropertyChangeListener("value", this);
  }

  public final PropertyEditorContainer getContainer ()
  {
    return container;
  }

  public final JLabel getLabel ()
  {
    return label;
  }

  /**
   * This method gets called when a bound property is changed.
   *
   * @param evt A PropertyChangeEvent object describing the event source and the property
   *            that has changed.
   */

  public final void propertyChange (final PropertyChangeEvent evt)
  {
    templateDescription.setParameter(name, container.getValue());
    if (listener != null)
    {
      listener.stateChanged(new ChangeEvent(this));
    }
  }

  public final ChangeListener getListener ()
  {
    return listener;
  }

  public final void setListener (final ChangeListener listener)
  {
    this.listener = listener;
  }
}