Question

I’m using GWT to create a client-side only library. I’m using JSNI to call functions is Java from JS. The issue is I’m trying to pass in an element or a function handler and nothing seems to be happening. I don’t get an exceptions from GWT or js. Here’s my JSNI function with the bridge.

public static String testMe(Object obj) 
  {
      return "Response to " + obj.toString();     
  }

  public static native void defineBridgeMethod() /*-{
     $wnd.testMe = function(msg) {
        return @com.mycompany.mywebapp.client.MyWebApp::testMe(Ljava/lang/Object;);
     };

  }-*/;

Thanks!

Answer 1

You’re not using msg, do you mean to call the function with it as a parameter:

public static native void defineBridgeMethod() /*-{
  $wnd.testMe = $entry(function(msg) {
    return @com.mycompany.mywebapp.client.MyWebApp::testMe(Ljava/lang/Object;)(msg);
  });
}-*/;

or you can assign the function directly to window:

public static native void defineBridgeMethod() /*-{
  $wnd.testMe = $entry(
    @com.mycompany.mywebapp.client.MyWebApp::testMe(Ljava/lang/Object;)
  );
}-*/;