EventListeners

[Ned]

Hi all,

I was just wondering if anyone could help me out. I m working on an app that
displays SVG content in JSVGCanvas. The SVG document contains a few hotspots
that when clicked will trigger an action. (I have listeners for these and
they work fine). One of these actions is to open another document in the
JSVGCanvas when an element is clicked - this also works fine. Now what I
want to do is register listeners on elements of this document and this where
it all falls apart. Even though the document has been updated it just wont
add a listener to the element in the new SVG document.

At the moment I m just trying to do simple navigation between different SVG
documents i.e. load SVG file, click on an element on the file, load another
svg file, click on an element on that file and that returns you to the
original.

Now I m just wondering if I m missing something or if this is possible. Any
help would be appreciated.

Thanks
Ned

Here is sample code...

// get the location of the doc and set it to canvas
       String loc = "sample.svg";
       File f = new File(loc);
       try{
            jSVGCanvas1.setURI(f.toURL().toString());
       }
       catch (Exception ex) {
           ex.printStackTrace();
       }

      jSVGCanvas1.addSVGLoadEventDispatcherListener
       (new SVGLoadEventDispatcherAdapter() {
               public void svgLoadEventDispatchStarted
                   (SVGLoadEventDispatcherEvent e) {
                   document = jSVGCanvas1.getSVGDocument();
                   window = jSVGCanvas1.getUpdateManager
().getScriptingEnvironment().createWindow();
                   // Registers the listeners on the document just before
the SVGLoad event is dispatched.
                   registerListeners();
                 }
           });

       jSVGCanvas1.addSVGDocumentLoaderListener(new
SVGDocumentLoaderAdapter(){
           public void documentLoadingStarted(SVGDocumentLoaderEvent e){
               System.out.println("loading...");
           }

           public void documentLoadingCompleted(SVGDocumentLoaderEvent e) {
               System.out.println("finished loading...");
           }
       });

       jSVGCanvas1.addGVTTreeBuilderListener(new GVTTreeBuilderAdapter(){
           public void gvtBuildStarted(GVTTreeBuilderEvent e){
             System.out.println("building...");
           }

           public void gvtBuildCompleted(GVTTreeBuilderEvent e){
               System.out.println("finished building...");
           }
       });

       jSVGCanvas1.addGVTTreeRendererListener(new GVTTreeRendererAdapter(){
           public void gvtRenderingPrepare(GVTTreeRendererEvent e) {
               System.out.println("rendering...");
           }
           public void gvtRenderingCompleted(GVTTreeRendererEvent e){
               System.out.println("Finished rendering...");
               // want to set the document element to what ever is in the
JSVGCanvas and register listenrs again
               document = jSVGCanvas1.getSVGDocument();
               registerListeners();
           }
       });

      public void registerListeners() {
           // element "Primary" belongs to samle.svg file
           Element elt = document.getElementById("Primary");
           if(elt != null){
                        EventTarget t = (EventTarget)elt;
                        // Adds a 'onclick' listener
                       t.addEventListener("click", new OnClickAction(),
false);
            }

           // element home belongs to sample2.svg file
            Element elt2 = document.getElementById("home");
            if(elt2 != null){
                  EventTarget t2 = (EventTarget)elt2;
                  t2.addEventListener("SVGLoad", new OnLoadAction1(),
true);
                 t2.addEventListener("click", new OnClickAct(), true);
       }
   }

   // when a hotspot is clicked then change the document in JSVGCanvas
   public class OnClickAction implements EventListener {
       public void handleEvent(Event evt) {
            String loc1 = "sample1.svg";
            File f = new File(loc1);
            try{
                 jSVGCanvas1.setURI(f.toURL().toString());
            }
            catch (Exception ex){
                ex.printStackTrace();
            }
       }
   }

   // when hotspot is clicked bring back to original
   public class OnClickAct implements EventListener {
       public void handleEvent(Event evt) {
            String loc = "sample.svg";
            File f = new File(loc);
            try{
                 jSVGCanvas1.setURI(f.toURL().toString());
            }
            catch (Exception ex){
                ex.printStackTrace();
            }
       }
   }