/*

         StatCvs - CVS statistics generation 

         Copyright (C) 2002  Lukasz Pekacki <lukasz@pekacki.de>

         http://statcvs.sf.net/

         This library is free software; you can redistribute it and/or

         modify it under the terms of the GNU Lesser General Public

         License as published by the Free Software Foundation; either

         version 2.1 of the License, or (at your option) any later version.

         This library is distributed in the hope that it will be useful,

         but WITHOUT ANY WARRANTY; without even the implied warranty of

         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

         Lesser General Public License for more details.

         You should have received a copy of the GNU Lesser General Public

         License along with this library; if not, write to the Free Software

         Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

         $RCSfile: AvgFileSizeTimeLineReport.java,v $

         $Date: 2008/04/02 11:22:15 $

 */

 package net.sf.statcvs.reports;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.Iterator;

 import java.util.List;

 import java.util.SortedSet;

 import net.sf.statcvs.Messages;

 import net.sf.statcvs.model.Revision;

 import net.sf.statcvs.model.VersionedFile;

 import net.sf.statcvs.reportmodel.TimeLine;

 /**

  * Time line for the average file size from a specified file list.

  * 

  * @author Richard Cyganiak <rcyg@gmx.de>

  * @version $Id: AvgFileSizeTimeLineReport.java,v 1.6 2008/04/02 11:22:15 benoitx Exp $

  */

 public class AvgFileSizeTimeLineReport {

     private final TimeLine timeLine;

     /**

      * Creates a new file count time line for a specified list of files.

      * @param files a list of {@link net.sf.statcvs.model.VersionedFile}s

      */

     public AvgFileSizeTimeLineReport(final SortedSet files) {

         timeLine = new TimeLine(Messages.getString("AVERAGE_FILE_SIZE_TITLE"), Messages.getString("RANGE_LOC_PER_FILE"));

         final List revisions = new ArrayList();

         final Iterator filesIt = files.iterator();

         while (filesIt.hasNext()) {

             final VersionedFile file = (VersionedFile) filesIt.next();

             revisions.addAll(file.getRevisions());

         }

         Collections.sort(revisions);

         final Iterator it = revisions.iterator();

         int loc = 0;

         int fileCount = 0;

         while (it.hasNext()) {

             final Revision rev = (Revision) it.next();

             loc += rev.getLinesDelta();

             fileCount += rev.getFileCountDelta();

             final int ratio = (fileCount == 0) ? 0 : loc / fileCount;

             timeLine.addTimePoint(rev.getDate(), ratio);

         }

     }

     /**

      * Returns the result time line

      * @return the result time line

      */

     public TimeLine getTimeLine() {

         return timeLine;

     }

 }