/**
 * <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.gv.egiz.pdfas.impl.api;

import at.gv.egiz.pdfas.api.sign.pos.SignaturePositioning;
import at.gv.egiz.pdfas.api.sign.pos.axis.AbsoluteAxisAlgorithm;
import at.gv.egiz.pdfas.api.sign.pos.axis.AutoAxisAlgorithm;
import at.gv.egiz.pdfas.api.sign.pos.axis.AxisAlgorithm;
import at.gv.egiz.pdfas.api.sign.pos.page.AbsolutePageAlgorithm;
import at.gv.egiz.pdfas.api.sign.pos.page.AutoPageAlgorithm;
import at.gv.egiz.pdfas.api.sign.pos.page.NewPageAlgorithm;
import at.gv.egiz.pdfas.api.sign.pos.page.PageAlgorithm;
import at.knowcenter.wag.egov.egiz.PdfAS;
import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;
import at.knowcenter.wag.egov.egiz.pdf.TablePos;

/**
 * @author wprinz
 * 
 */
public final class PosHelper
{
  /**
   * Hidden default constructor.
   */
  private PosHelper()
  {
    // empty block
  }

  public static TablePos formTablePos(SignaturePositioning signaturePositioning) throws PDFDocumentException
  {
    if (signaturePositioning == null)
    {
      return null;
    }

    String positioningString = formPositioningString(signaturePositioning);
    TablePos pos = PdfAS.parsePositionFromPosString(positioningString);

    return pos;
  }

  protected static String formPositioningString(SignaturePositioning sp)
  {
    String x_algo = formAxisAlgoString(sp.getXAlgorithm());
    String y_algo = formAxisAlgoString(sp.getYAlgorithm());
    String w_algo = formAxisAlgoString(sp.getWidthAlgorithm());
    String p_algo = formPageAlgoString(sp.getPageAlgorithm());
    String positioning = "x:" + x_algo + ";y:" + y_algo + ";w:" + w_algo + ";p:" + p_algo + ";f:" + sp.getFooterLine();
    return positioning;
  }

  protected static String formAxisAlgoString(AxisAlgorithm algorithm)
  {
    if (algorithm instanceof AutoAxisAlgorithm)
    {
      return "auto";
    }
    AbsoluteAxisAlgorithm aaa = (AbsoluteAxisAlgorithm) algorithm;
    return Float.toString(aaa.getAbsoluteValue());
  }

  protected static String formPageAlgoString(PageAlgorithm algorithm)
  {
    if (algorithm instanceof AutoPageAlgorithm)
    {
      return "auto";
    }
    if (algorithm instanceof NewPageAlgorithm)
    {
      return "new";
    }
    AbsolutePageAlgorithm apa = (AbsolutePageAlgorithm) algorithm;
    return Integer.toString(apa.getPage());
  }

}