001/**
002 * www.jcoverage.com
003 * Copyright (C)2003 jcoverage ltd.
004 *
005 * This file is part of jcoverage.
006 *
007 * jcoverage is free software; you can redistribute it and/or modify
008 * it under the terms of the GNU General Public License as published
009 * by the Free Software Foundation; either version 2 of the License,
010 * or (at your option) any later version.
011 *
012 * jcoverage is distributed in the hope that it will be useful, but
013 * WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU General Public License
018 * along with jcoverage; if not, write to the Free Software
019 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
020 * USA
021 *
022 */
023package com.jcoverage.reporting.html;
024
025import java.io.PrintWriter;
026
027import org.apache.log4j.Logger;
028
029import com.jcoverage.reporting.Column;
030import com.jcoverage.reporting.FormattingContext;
031import com.jcoverage.reporting.Line;
032import com.jcoverage.reporting.Page;
033
034/**
035 *
036 */
037public class RedGreenIndicator extends DefaultColumnRenderer implements ColumnRenderer {
038  
039  static Logger logger=Logger.getLogger(RedGreenIndicator.class);
040  
041  public RedGreenIndicator(String label) {
042    super(label);
043  }
044
045  public void renderField(FormattingContext ctx,PrintWriter writer,Column column,Line line,String href) {
046    int greenValue=((Integer)line.getField(column)).intValue();
047    int redValue=100-greenValue;
048
049    String greenGifPath=ctx.getCollator().getPathToResource(ctx,"images/green.gif",getPage(line));
050    String redGifPath=ctx.getCollator().getPathToResource(ctx,"images/red.gif",getPage(line));
051
052    writer.print("<td>");
053    if (greenValue>0) {
054      writer.print("<img src=\""+greenGifPath+"\" height=\"10\" width=\""+greenValue+"\"/>");
055    }
056    if (redValue>0) {
057      writer.print("<img src=\""+redGifPath+"\" height=\"10\" width=\""+redValue+"\"/>");
058    }
059    writer.println("</td>");
060  }
061  
062  public String getWidth() {
063    return "100";
064  }
065
066  /**
067   * We need to find the location of the page we are generating.  If
068   * our line has an owning page, we can use that, otherwise we must
069   * be the top-level line, which means we should use the detail
070   * page. It's a bit contrived, but should work for most situations.
071   */
072  Page getPage(Line line) {
073    Page page=line.getOwner();
074    if (page==null) {
075      page=line.getDetailPage();
076    }
077    return page;
078  }
079
080}