GWT Exporter now in googlecode repository

[Ray Cromwell]

I just dropped a version in code.google.com/p/gwt-exporter which includes closure support.

Currently missing:
cross-platform 'hassle free' out-of-the-box build scripts (we use maven internally, but that's because we've got our own intranet repository holding all the GWT jars for every platform)
unit tests

As a sample, you can write code like this:

/**
  * @gwt.exportClosure
*/
public interface ClickListener implements Exportable {
  public void onClick(Blah b);
}


/**
  * @gwt.export
 */
public Blah {
  private ClickListener listener;

  public void addListener(ClickListener foo) {
     listener=foo;
  }

  public String getFoo() {
     return "foo";
  }

  public void fireClick() {
      if(listener != null) listener.onClick(this);
  }
}



and then in Javascript, write

var b = new Blah();
b.addListener(function(blah) { alert("Got a "+blah.getFoo()); });
b.fireClick();

-Ray

[Scott Blum]

That sounds.... really sweet!

[Alex Tkachman]

I agree.
I would love to see it contributed to core GWT because it opens huge
possibilities.

Ray, I am not Google employee so it is easy to ask - what do you think
about contributing this stuff to GWT?

Googlers, what do you think?

[Ray Cromwell]

Absolutely zero inhibitions to doing so. :) I wrote the code to solve a need we had internally, as well as a teaching tool on my blog, so I always intended to give it away, and nothing would make me happier than to see people using it, contributing to it, or absorbing it into GWT.  I think the GWT guys will have to code-review it first, because I'm not sure if it conforms to Google conventions. I also have to sign a CLA, I just haven't gotten around to it yet.

-Ray

[Ray Cromwell]

BTW, I just put up a new GWT Demystified article explaining some of how it works.

-Ray