Applet Communication SmartGWT 2.4

[yhc_vlc]

This question is about the communication (or method / function invocation ) between an applet and SmartGWT 2.4. Unfortunately the applet cannot be replaced so I'm stuck with it.

I have been able to add an applet into SmartGWT using the prescribed com.smartgwt.client.widgets.plugins.Applet. Now I am trying to get the communication between the applet and smartgwt to work.

The communication from javascript to the Applet is working using the following implementation:

Applet Code:

    public String appletMethod(){
    	return new String("apletMethod! value");
    }

SmartGWT Code:

    public static native void callAppletMethod()/*-{
		//JSNI stuff which is required
		var loader = $doc.applets[0];
		//there is a reference to my applet in the var appplet (duh)
		var applet = loader.getApplet();
    	
    	//return the return value of the method
    	alert(applet.appletMethod());
    }-*/;

When invoking the callAppletMethod an alert pops up with "apletMethod! value".

However I can't get the reverse to work - a method call from the applet to SmartGWT. I've tried this using the following code:

Applet Code:

    public void callSmartGWTMethod(){
		//get the handle to the document
		JSObject window = JSObject.getWindow(this);
				
		try {
			//this is where the call is acutally made
			Object result = window.call("smartGWTMethod", null);
			System.out.println(result.toString());
		} catch (JSException e) {
			e.printStackTrace();
		}
    }

SmartGWT/Javascript Code:

    public static native String smartGWTMethod()/*-{
		function smartGWTMethod()
		{
    		return "smaretGWTMethod, misspeled on popuse! value";
		}
    }-*/;

When I call the method i get this exception when running it in Chrome
'Uncaught JavaScript exception [Uncaught ReferenceError: smartGWTMethod is not defined] in , line 1"

Furthermore I have tried pasting this code in a basic HTML page and it works. So how do i get this to work in SmartGWT?

Thanks!

edit:learnt the use of the "code" tag

[gsaxena]

I'm about to embark on just this same requirement. Were you ever able to get a Java applet to call a SmartGWT method? Any pointers from Isomorphic?

[ssieb]

The original poster's code is not going to work because that function is not global, it will be created inside of the other function. You need to create a global function.

The following is completely untested:

public static native void setupSmartGWTMethod()/*-{
  window.smartGWTMethod  = function (){
    return "smaretGWTMethod, misspeled on popuse! value";
  };
}-*/;

If you actually need to return something useful, look into the calling conventions for how to call Java functions from JavaScript.

[yhc_vlc]

It has been a while, but i believe the problem was that i did not publish the methods. Here is a short example

        private native void publishJavaScriptFunctions()/*-{
		$wnd.smartGWTMethod = @package.package.package::smartGWTMethod(Ljava/lang/String;);
        }-*/;

More information can be found in the following links.
http://code.google.com/webtoolkit/do...asicsJSNI.html
http://googlewebtoolkit.blogspot.com...rt-1-jsni.html

Good luck!