/**
 * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
 * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
 * joint initiative of the Federal Chancellery Austria and Graz University of
 * Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 *
 * $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 java.util.Iterator;
import java.util.List;

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;
  
  private int uiBlockEndPos = 0;

  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();
  }

   public int getUiBlockEndPos() {
      return this.uiBlockEndPos;
   }

   public void setUiBlockEndPos(int uiBlockEndPos) {
      this.uiBlockEndPos = uiBlockEndPos;
   }
   
   public static void mulitSetUiBlockEndPos(List signatureHolders, int uiBlockEndPos) {
      for (Iterator it = signatureHolders.iterator(); it.hasNext();) {
         SignatureHolder sh = (SignatureHolder) it.next();
         trySetUiBlockEndPos(sh, uiBlockEndPos);
      }      
   }
   
   public static void trySetUiBlockEndPos(SignatureHolder sh, int uiBlockEndPos ) {
      if (sh != null && sh instanceof TextualSignatureHolder) {
         ((TextualSignatureHolder)sh).setUiBlockEndPos(uiBlockEndPos);
      }
   }
   
  
  
}