/**
 * <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: PDFSignatureObject.java,v 1.3 2006/10/31 08:09:33 wprinz Exp $
 */
package at.knowcenter.wag.egov.egiz.pdf;

import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;
import at.knowcenter.wag.egov.egiz.sig.SignatureObject;

/**
 * Defines an interface to get access to PDF documents. There exists many open source libraries and
 * commercial libraries.
 * 
 * @author wlackner
 */
public interface PDFSignatureObject {
  public void setSignatorObject(SignatureObject signatorObject);

  /**
   * Converts the current abstract signature object in a pdf signature object implementation
   * 
   * @return the converted pdf signature object
   * @throws PDFDocumentException
   */
  public Object getSignatureObject() throws PDFDocumentException;

  /**
   * Converts a abstract signature object in a pdf signature object implementation
   * 
   * @param signatorObject the abstract signatorObject to convert
   * @return the converted pdf signature object
   * @throws PDFDocumentException
   */
  public Object getSignatureObject(SignatureObject signatorObject) throws PDFDocumentException;
}