Package net.sf.jasperreports.engine.base

Source Code of net.sf.jasperreports.engine.base.JRBaseSection

/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.engine.base;

import java.io.Serializable;

import net.sf.jasperreports.engine.JRBand;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.JRSection;
import net.sf.jasperreports.engine.design.events.JRChangeEventsSupport;
import net.sf.jasperreports.engine.design.events.JRPropertyChangeSupport;


/**
* Used for implementing section functionality. A report can contain the following sections: detail.
* For each group defined in the report, there is a corresponding group header section and group footer section.
* Report sections consist of one or more bands.
* @see JRBaseBand
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRBaseSection.java 3939 2010-08-20 09:52:00Z teodord $
*/
public class JRBaseSection implements JRSection, JRChangeEventsSupport, Serializable
{
 

  /**
   *
   */
  private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
 
  protected JRBand[] bands;


  /**
   *
   */
  protected JRBaseSection()
  {
  }
 
 
  /**
   *
   */
  protected JRBaseSection(JRBand band)
  {
    bands = new JRBand[]{band};
  }
 
 
  /**
   *
   */
  protected JRBaseSection(JRSection section, JRBaseObjectFactory factory)
  {
    factory.put(section, this);
   
    /*   */
    JRBand[] jrBands = section.getBands();
    if (jrBands != null && jrBands.length > 0)
    {
      bands = new JRBand[jrBands.length];
      for(int i = 0; i < jrBands.length; i++)
      {
        bands[i] = factory.getBand(jrBands[i]);
      }
    }
  }

  /**
   *
   */
  public JRBand[] getBands()
  {
    return bands;
 

  /**
   *
   */
  public Object clone()
  {
    JRBaseSection clone = null;
   
    try
    {
      clone = (JRBaseSection)super.clone();
    }
    catch (CloneNotSupportedException e)
    {
      throw new JRRuntimeException(e);
    }

    if (bands != null)
    {
      clone.bands = new JRBand[bands.length];
      for(int i = 0; i < bands.length; i++)
      {
        clone.bands[i] = (JRBand)bands[i].clone();
      }
    }

    return clone;
  }
 
  private transient JRPropertyChangeSupport eventSupport;
 
  public JRPropertyChangeSupport getEventSupport()
  {
    synchronized (this)
    {
      if (eventSupport == null)
      {
        eventSupport = new JRPropertyChangeSupport(this);
      }
    }
   
    return eventSupport;
  }
   
}
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