/*
	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: FileCountTimeLineReport.java,v $
	$Date: 2004/02/20 01:33:29 $
*/
package net.sf.statcvs.reports;

import java.util.Iterator;
import java.util.SortedSet;

import net.sf.statcvs.Messages;
import net.sf.statcvs.model.CvsFile;
import net.sf.statcvs.model.CvsRevision;
import net.sf.statcvs.reportmodel.TimeLine;

/**
 * Time line for the number of non-dead files from a specified file list.
 * 
 * @author Richard Cyganiak <rcyg@gmx.de>
 * @version $Id: FileCountTimeLineReport.java,v 1.3 2004/02/20 01:33:29 cyganiak Exp $
 */
public class FileCountTimeLineReport {
	private 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.CvsFile}s
	 */
	public FileCountTimeLineReport(SortedSet files) {
		timeLine = new TimeLine(Messages.getString("FILE_COUNT_TITLE"),
				Messages.getString("RANGE_FILES"));
		timeLine.setInitialValue(0);
		Iterator filesIt = files.iterator();
		while (filesIt.hasNext()) {
			CvsFile file = (CvsFile) filesIt.next();
			addRevisions(file);
		}
	}

	/**
	 * Returns the result time line
	 * @return the result time line
	 */
	public TimeLine getTimeLine() {
		return timeLine;
	}

	private void addRevisions(CvsFile file) {
		Iterator it = file.getRevisions().iterator();
		while (it.hasNext()) {
			CvsRevision rev = (CvsRevision) it.next();
			int change = rev.getFileCountDelta();
			if (change != 0) {
				timeLine.addChange(rev.getDate(), change);
			}
		}
	}
}