Talk:Programmatically invoking a JavaFX Script

From Planet JFX

[edit] Compile errors

There appears to be some issues with the FxScriptLauncher:

   1) InputStreamReader is unknown; resolved by adding "import java.io.InputStreamReader".
   2) JavaFXProvisionClient cannot be resolved to a type.  Not resolved...

Also note that issue 2 above is not resolved by either, downloading and including jar files from the JSR-000223 reference implementation or the latest versions of Java 6 from SUN.

For issue 2 you can use : InputStreamReader reader = new InputStreamReader(loader.getResourceAsStream("HelloWorld.fx"));

Of course HelloWorld.fx must be on your classpath.

Removed JavaFXProvisionClient. I didn't use the loader option since that would require moving HelloWorld into the root of the classpath. -- Pforhan 14:23, 6 June 2007 (UTC)

Issue 2 Resolved with the change to the source of JavaFxScriptLauncher to FxScriptLauncher Now working with dynamic bindings.

[edit] How I can get something back from the script/scriptengine?

for example:

var win=Frame {
    width:200
    height:200
    visible:true
};

var script:String="import javafx.ui.*;
            var MyTestString=Button {
            };";

var engine = new ScriptEngineManager().getEngineByExtension("fx");
var Object=engine.eval(script);
win.content=(Button) Object;

this does'nt work. bindings.get/put works only for plain java-objects. So how i can compose something with an external dynamical script and bind the result into the main script then?

cheers are

The usage you show, above, is definintely not the norm. Generally, because of security issues, the JFX creators are hesitant to allow much in the way of dynamic invokation. I think you might be able to use JavaFX's built-in reflection protocol to invoke FX scripts dynamically, though I've not done it. Or, pick a java object to use as a communication point. Lastly (and this is one I've toyed with implementing) you could create a script dynamically, writing a script that references the scripts you are interested in, and then invoke that script the normal way. Pforhan 15:39, 31 January 2008 (UTC)