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import org.apache.wicket.ajax.AjaxEventBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.IAjaxCallDecorator;
import org.apache.wicket.ajax.calldecorator.CancelEventIfNoAjaxDecorator;
import org.apache.wicket.ajax.markup.html.IAjaxLink;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.model.IModel;

/**
 * A mapped area segment of an image map that adds an Ajax link
 * to the area as well as a regular tooltip.
 * 
 * @author Jonny Wray
 *
 */
public class MapArea extends WebMarkupContainer{
	    private static final long serialVersionUID = -135521429660733572L;

	    private String shape;
	    private String coords;
	    private String tooltipText;
	
	    /**
	     * Construct the map area
	     * 
	     * @param id Component identifier
	     * @param model Model
	     * @param shape The specific area shape
	     * @param coords The coordinates of the area as a comma separated list
	     * @param tooltipText The tooltip text, or null to not include it
	     * @param linkCallback The link callback function called when the area is click, or null to have no link functionality
	     */
	    public MapArea(String id, IModel model, String shape, String coords, String tooltipText, final IAjaxLink linkCallback) {
		super(id, model);
		this.shape = shape;
		this.coords = coords;
		this.tooltipText = tooltipText;
		if(linkCallback != null){
			    add(new AjaxEventBehavior("onclick"){
				private static final long serialVersionUID = 2615093257359874075L;
	
				@Override
				protected void onEvent(AjaxRequestTarget target) {
					    linkCallback.onClick(target);
				}
				
				protected IAjaxCallDecorator getAjaxCallDecorator(){
					    return new CancelEventIfNoAjaxDecorator();
		}		}
				
			   });
		}
		setOutputMarkupId(true);
	    }
	
	    /**
	    * Construct the map area
	    * 
	    * @param id Component identifier
	    * @param shape The specific area shape
	    * @param coords The coordinates of the area as a comma separated list
	    * @param tooltipText The tooltip text, or null to not include it
	    * @param linkCallback The link callback function called when the area is click, or null to have no link functionality
	    */
	public MapArea    public MapArea(String id, String shape, String coords, String tooltipText, final IAjaxLink linkCallback) {
		this(id, null, shape, coords, tooltipText, linkCallback);
	    }

	    @Override
	    protected void onComponentTag(final ComponentTag tag){
		super.onComponentTag(tag);
		assert tag.getName().equals("area");
		tag.put("shape", shape);
		tag.put("coords", coords);
		tag.put("href", "#");
		if(tooltipText != null && !tooltipText.isEmpty()){
			    tag.put("title", tooltipText);
		}
	    }
}

import org.apache.wicket.ajax.markup.html.IAjaxLink;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.repeater.RepeatingView;

/**
 * Produces markup for an image map HTML element with
 * repeating mapped areas.
 * 
 * @author Jonny Wray
 *
 */
public class DynamicImageMap extends WebMarkupContainer{
	    private static final long serialVersionUID = 8859550289557897390L;
	    private String mapName;
	    private RepeatingView areas;
	private int areaCounter  private int areaCounter = 0;
	
	    public DynamicImageMap(final String id, String mapName){
		super(id);
		this.mapName = mapName;
		areas = new RepeatingView("areas");
		add(areas);
	    }

	    public void addArea(String shape, String coords, String tooltipText, IAjaxLink linkCallback){
		MapArea area = new MapArea(Integer.toString(areaCounter++), shape, coords, tooltipText, linkCallback);
		areas.add(area);
	    }
	

	    @Override
	    protected void onComponentTag(final ComponentTag tag){
		super.onComponentTag(tag);
		assert tag.getName().equals("map");
		tag.put("name", mapName);
	    }	
}

import java.awt.image.BufferedImage;

import org.apache.wicket.Resource;
import org.apache.wicket.markup.html.image.Image;
import org.apache.wicket.markup.html.image.resource.DynamicImageResource;
import org.apache.wicket.protocol.http.WebResponse;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.JFreeChart;

/**
 * Wicket Image constructed from a JFreeChart and exposing the
 * rendering information to allow image map creation
 * 
 * @author Jonny Wray
 *
 */
public class ChartImage extends Image {
	    private static final long serialVersionUID = -7165602010769784429L;
	
	private    private int width;
    private int height;
    private JFreeChart chart;
    private transient BufferedImage image;
    private transient ChartRenderingInfo renderingInfo;
    
	    public ChartImage(String id, JFreeChart chart, int width, int height){
		super(id);
		this.width = width;
		this.height = height;
		this.chart = chart;
	    }
	
	    private BufferedImage createBufferedImage(){
		if(image == null){
			renderingInfo = new ChartRenderingInfo();
			image = chart.createBufferedImage(width, height, renderingInfo);
		}
		return image;
	    }
	
	    public ChartRenderingInfo getRenderingInfo(){
		if(renderingInfo == null){
			createBufferedImage();
		}
		return renderingInfo;
	    }
	
	    @Override
    protected Resource getImageResource() {
        return new DynamicImageResource(){
			private static final  private static final long serialVersionUID = -4386816651419227671L;

			    @Override
			    protected byte[] getImageData() {
		                return toImageData(createBufferedImage());
			    }

			@Override
		    @Override
            protected void setHeaders(WebResponse response) {
		                if (isCacheable()) {
		            super.setHeaders(response);
		} 
       } else {
		       else {
		    response.setHeader("Pragma", "no-cache");
		            response.setHeader("Cache-Control", "no-cache");
		            response.setDateHeader("Expires", 0);
		}
        }
		    }
        };
    }
}