loading URL from applet (or referencing an applet in a control listener?)

[Grant Thawley]

Hello people,

I have been working on an application in eclipse using the prefuse libraries. The Java application can open new browser windows by loading data from an xml file that contains the URL (by clicking on the relevant node and applying the label to the URL string). However when running as an applet the browserlauncher does not work. I understand you have to use getAppletContext().showdocument( url,), but I am unsure how to change the browserlauncher.showdocument to getappletcontext


My folder structure



Here is my applet code from TreeViewApp.java with a commented out (unrelated) example that opens a new window to google when launched.

//import prefuse.util.ui.BrowserLauncher;
import prefuse.util.ui.JPrefuseApplet;



public class TreeViewApp extends JPrefuseApplet {

	
    public void init() { //some sample getappletcontext launches new window when applet starts
    	
    //	try
	//	{
    // 	AppletContext ac = getAppletContext();
    // 	ac.showDocument(new URL("http://google.com"),"_blank"); //blank opens new window
    	
	//	}
	//	catch (MalformedURLException e){
	//		System.out.println(e.getMessage());
	//	}
    	
       this.setContentPane(
           policytree.demos.TreeView.demo("chi-ontology.xml", "name"));
    
  
    
    }
    
} // end of class TreeView

Here is the relevant code section from treeview.java (what I really need the applet wrapper to do)

 public void itemClicked(VisualItem item, MouseEvent e) { 
            
            	if (!SwingUtilities.isLeftMouseButton(e)) return;
               
                if ( e.getClickCount() == 2 ) {
                   String docid = item.getString("docid");
                   
                	BrowserLauncher.showDocument(URL+docid+URL2); //docid is a url variable, url and url2 are the first and last part of the url
                   }
                   else if ( e.getClickCount() == 1 ) {
                  if ( item.canGetString(label) ) //put this in to return a label, stops the tree from collapsing if you click on a node string
                	   search.setQuery(null); //sets search box to null
                  
                   }
            
            }
            
        });

If anyone is interested in disscusing this further or helping me to work out how to use the AppletContext and use the showDocument() methods, that would be great. I am unsure how to reference the applet in my control listner. Please let me know if you require further information. here is the ap so far http://javatestsite.hostzi.com/greenhorn.html (it takes a while to load on this free server)