LiveConnect nyi (applet to JS communication does not work)

JS to Applet communication work but applet to JS communication does not work. You can verify this with the apple liveconnect test at http://developer.apple.com/internet/safari/samples/ColorBlockApplet.html
You'll see the color change when you click on the buttons but when you double click the applet there is no alert message.

This is a bug in the applet page. Liveconnect specifications state that MAYSCRIPT must be specified for Java->JS to work[1]. The ColorBlockApplet does not set this.

1. http://java.sun.com/j2se/1.4.2/docs/guide/plugin/developer_guide/java_js.html#enabling

(In reply to comment #1)
> This is a bug in the applet page. Liveconnect specifications state that
> MAYSCRIPT must be specified for Java->JS to work[1]. The ColorBlockApplet does
> not set this.
>
> 1.
> http://java.sun.com/j2se/1.4.2/docs/guide/plugin/developer_guide/java_js.html#enabling
>

I tested after adding MAYSCRIPT tag it still does not work. It cannot find netscape.javascript.JSObject class.

Did you try it it with the new plugin (IcedTeaPlugin.so, built with --enable-liveconnect), or the old one? The old one (gcjwebplugin) is expected to throw that exception...

Yes I can confirm that IcedTeaPlugin.so is used from Firefox3 in about:plugins. I also looked at the output when firefox is launched from command prompt. Can you tell me in which jar file netscape classes are supposed to be packaged?

Assuming you are using the tip, the classes should be in rt.jar

I'm using ubuntu intrepid compiled package version 6b12-pre2-0ubuntu2 and the only Netscape class that is in rt.jar is sun.security.x509.NetscapeCertTypeExtention.
There are no netscape JS classes.

Hmm, AFAIK Ubuntu does not compile with liveconnect support. And if it did, it should have had the classes in rt.jar.

Can you post the output of about:plugins?

Created attachment 116
Output of about:plugins

Created attachment 117
Output of about:plugins

the current package in Ubuntu intrepid is configured with --enable-liveconnect.

there seems to be a problem about adding the netscape/javascript classes into the rt.jar, which is built in stage2. In the icedtea Makefile, these files are only included in rt-closed.jar, but not in the rt.jar, which is served at the end of the build.

tracked down the missing files to configuring with --with-alt-jar=/usr/bin/fastjar. Didn't find yet the cause. The current Ubuntu build does include these files.

--- rt-jar.list 2008-10-17 07:50:22.000000000 +0000
+++ rt-fastjar.list 2008-10-17 07:50:31.000000000 +0000
@@ -11008,11 +11008,6 @@
 net/sourceforge/jnlp/util/WeakList.class
 net/sourceforge/nanoxml/XMLElement.class
 net/sourceforge/nanoxml/XMLParseException.class
-netscape/javascript/JSException.class
-netscape/javascript/JSObject.class
-netscape/javascript/JSProxy.class
-netscape/javascript/JSRunnable.class
-netscape/javascript/JSUtil.class
 org/ietf/jgss/ChannelBinding.class
 org/ietf/jgss/GSSContext.class
 org/ietf/jgss/GSSCredential.class

In http://people.ubuntu.com/~doko/java/ColorBlockApplet.html
I added the MAYSCRIPT attribute, but I still cannot a reaction clicking on the applet area.

Fixed in tip -- http://people.ubuntu.com/~doko/java/ColorBlockApplet.html works for me now. Can you please retry?

fixed now.

there's one glitch. Clicking the first time on a button doesn't change the color, only with the second click the color is changed (but then it is changed two times).

There is a 3-4 second delay for the first action to happen, as mozilla builds a table of java objects initially.

How long did you wait after the first click? One way to verify that it was slow (as opposed to not working) is to run with the ICEDTEAPLUGIN_DEBUG variable set. This will slow things down a lot, but if it's outputting after first click, it means that it is processing...