/**
 * <copyright> Copyright (c) 2006 by Know-Center, Graz, Austria </copyright>
 * 
 * This software is the confidential and proprietary information of Know-Center,
 * Graz, Austria. You shall not disclose such Confidential Information and shall
 * use it only in accordance with the terms of the license agreement you entered
 * into with Know-Center.
 * 
 * KNOW-CENTER MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
 * NON-INFRINGEMENT. KNOW-CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
 * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES.
 * 
 * $Id: TextualSignatureHolder.java,v 1.1 2006/10/11 07:58:17 wprinz Exp $
 */
package at.knowcenter.wag.egov.egiz.pdf;

import java.io.Serializable;

import at.gv.egiz.pdfas.framework.input.DataSource;
import at.gv.egiz.pdfas.framework.input.TextDataSource;
import at.gv.egiz.pdfas.impl.input.TextDataSourceImpl;
import at.knowcenter.wag.egov.egiz.sig.SignatureObject;

/**
 * Data structure that holds the information of one signature block, which is
 * the signed/signable text and the corresponding SignatureObject.
 * 
 * @author wprinz
 */
public class TextualSignatureHolder implements Serializable, SignatureHolder
{

  /**
   * SVUID.
   */
  private static final long serialVersionUID = -7208103904479272760L;

//  /**
//   * The signed text of this object.
//   * 
//   * <p>
//   * This is the value that will be signed by the Connector.
//   * </p>
//   */
//  private String signed_text = null;

  /**
   * The signature object.
   */
  private SignatureObject signature_object = null;
  
  private TextDataSource textDataSource = null;

  public TextualSignatureHolder(String text, SignatureObject so)
  {
    //this.signed_text = text;
    this.signature_object = so;
    this.textDataSource = new TextDataSourceImpl(text);
  }

  public TextualSignatureHolder(TextDataSource text, SignatureObject so)
  {
    //this.signed_text = text;
    this.signature_object = so;
    this.textDataSource = text;
  }

//  /**
//   * @see at.knowcenter.wag.egov.egiz.pdf.SignatureHolder#getSignedText()
//   */
//  public String getSignedText()
//  {
//    return this.signed_text;
//  }

  /**
   * @see at.knowcenter.wag.egov.egiz.pdf.SignatureHolder#getSignatureObject()
   */
  public SignatureObject getSignatureObject()
  {
    return this.signature_object;
  }

  /**
   * @see at.knowcenter.wag.egov.egiz.pdf.SignatureHolder#getDataSource()
   */
  public DataSource getDataSource()
  {
    return this.textDataSource;
  }

  /**
   * This is used to replace the DataSource.
   * 
   * <p>
   * After processing the text, data sources containing large texts are usually replaced by a FileBased ones to save memory.
   * </p>
   * 
   * @param tds
   */
  public void exchangeDataSource(TextDataSource tds)
  {
    this.textDataSource = tds;
  }

  /**
   * This is just a shortcut to getDataSource().getText()
   * @return Returns the text of this data source.
   */
  public String getSignedText()
  {
    return this.textDataSource.getText();
  }
  
  
}