/**
 * <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.
 */
package at.knowcenter.wag.egov.egiz.sig;

import java.io.Serializable;

import at.gv.egiz.pdfas.framework.input.DataSource;

/**
 * Generic implementation of the SignatureData interface for being used by
 * signators and verificators.
 * 
 * @author wprinz
 */
public class SignatureDataImpl implements SignatureData, Serializable
{
  /**
   * SVUID.
   */
  private static final long serialVersionUID = -8652845539968684408L;

  /**
   * The signature data.
   */
  protected DataSource data = null;
  
  /**
   * The mime type of the data.
   */
  protected String mimeType = null;

  /**
   * The character encoding of the data if appropriate, or null if not.
   */
  protected String characterEncoding = null;

  /**
   * Constructor that fills the SignatureData.
   * 
   * <p>
   * The charactor encoding is set to null, so this constructor is primarily for
   * signature data that has no character encoding (e.g. binary data).
   * </p>
   * 
   * @param data
   *          The signature data.
   * @param mime_type
   *          The mime type of the data.
   */
  public SignatureDataImpl(DataSource data, String mime_type)
  {
    this.data = data;
    this.mimeType = mime_type;
    this.characterEncoding = null;
  }

//  /**
//   * Constructor that fills the SignatureData.
//   * 
//   * <p>
//   * Use this constructor for textual data as it allows to provide the character
//   * encoding.
//   * </p>
//   * 
//   * @param data
//   *          The signature data.
//   * @param mime_type
//   *          The mime type of the data.
//   * @param character_encoding
//   *          The character encoding of the data if appropriate, or null if not.
//   */
//  public SignatureDataImpl(byte[] data, String mime_type, String character_encoding)
//  {
//    this.data = data;
//    this.mimeType = mime_type;
//    this.characterEncoding = character_encoding;
//  }
  public SignatureDataImpl(DataSource data, String mime_type, String character_encoding)
  {
    this.data = data;
    this.mimeType = mime_type;
    this.characterEncoding = character_encoding;
  }
  
  /**
   * @see at.knowcenter.wag.egov.egiz.sig.SignatureData#getDataSource()
   */
  public DataSource getDataSource()
  {
    return this.data;
  }
  
  
  /**
   * @see at.knowcenter.wag.egov.egiz.sig.SignatureData#getMimeType()
   */
  public String getMimeType()
  {
    return this.mimeType;
  }

  /**
   * @see at.knowcenter.wag.egov.egiz.sig.SignatureData#getCharacterEncoding()
   */
  public String getCharacterEncoding()
  {
    return this.characterEncoding;
  }
}