Re: TopComponent/setActivatedNodes not workin with a given layer.xml file.

Try this in your FileSupportDataObject:


 // private FileSupportDataNode node;
  //  private final InstanceContent ic = new InstanceContent();
  //  private final Lookup lkp;
  //  private final FileSupportCloneableOpenSupport openCloneableOpenSupport;
  //  private FileSupportTopComponent tc;


    public FileSupportDataObject(FileObject pf, MultiFileLoader
loader) throws DataObjectExistsException, IOException {
        super(pf, loader);
  //      lkp = new ProxyLookup(getCookieSet().getLookup(), new
AbstractLookup(ic));
      FileSupportCloneableOpenSupport  openCloneableOpenSupport = new
FileSupportCloneableOpenSupport(this);

getCookieSet().assign(OpenSupport.class, openCloneableOpenSupport);

// ic.add(openCloneableOpenSupport); } @Override protected int
associateLookup() { return 1; }

//The method is create, not get...., the super class does the caching
of the Node object
    @Override
    protected Node createNodeDelegate() {
    //    if(node == null) {
       return  new FileSupportDataNode(this, Children.LEAF, getLookup());
     //   }
      //  return node;
    }

   // @Override
  //  public Lookup getLookup() {
    //    return lkp;
  //  }

  @Override
    public void unmarkModified() {
        setModified(false);     // not sure
    }

    @Override
    public CloneableOpenSupport findCloneableOpenSupport() {
      //  return openCloneableOpenSupport;

return getLookup().lookup(CloneableOpenSupport.class);

    }

    @Override
    public void markModified() throws IOException {
        setModified(true);      // not sure
    }


 public   static class FileSupportCloneableOpenSupport extends
CloneableOpenSupport implements OpenCookie, ViewCookie, CloseCookie {

        public FileSupportCloneableOpenSupport(DataObject env) {
            super(env);
        }

//See above
        @Override
        protected CloneableTopComponent createCloneableTopComponent() {
    //        if (tc == null) {
                return new FileSupportTopComponent(((DataObject)
env).getLookup());

 //           }
  //          return tc;
        }

        @Override
        protected String messageOpening() {
            return FileSupportDataObject.this.getName() + " was opened.";
        }

        @Override
        protected String messageOpened() {
            return FileSupportDataObject.this.getName() + " was closed.";


Boris


2015-12-01 11:40 GMT+01:00 Casqueiro Gilles <[email protected]>:

> Hi everybody,
>
> I have a NullPointer exception when I use the setActivatedNodes method
> from a TopComponent. I was able to reproduce the problem in a prototype by
> adding one of my modules responsible for the platform customization. This
> module basically contains only a layer.xml file and some  Wstcref and
> Wsmode files. I cannot figure out what happens with this module that
> prevents setActivatedNodes to work properly.
>
> Does someone could take a look at this prototype on GitHub?
> https://github.com/gil-c/DemoPropertiesWindowNotWorking.git. The steps to
> reproduce the problem are described in the README.md file.
>
> Thanks in advance
>
> Gilles
>
>
>
>
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