Java ScriptEngine and parent window functions

Question

I am using the Java ScriptEngine to call a JS function from a backing bean under certain conditions in the program. The catch is that the JSF page is running in an iFrame. Although the iFrame is not the real problem at this stage, I want it to be able to browse to a new page. For this, I have used top.window.location and parent.location and they work on a button click to load the page out of the iFrame without a problem.

This is a sample of the code I'm using for this:

    ScriptEngine se = new ScriptEngineManager().getEngineByName("JavaScript");
    se.eval("function someFunc(){parent.location = \"www.someurl.com\";}");
    Invocable invocableJS = (Invocable) se;
    invocableJS.invokeFunction("someFunc");

With parent.location and top.window.location I have read that they are called from the browser itsself, and are not JavaScript. So because of this, I get the following error:

javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "parent" is not defined. (<Unknown source>#1) in <Unknown source> at line number 1

It does exactly the same with document.getElementById("someComponent") and other similar. And it seems that the error remains with sun.org.mozilla..... in Chrome, IE, and FF all together.

So the question: How can I get the JS function to possibly use the parent.location? I imagine that I would need to check for the browser used and then import or call something from there depending on the browser, but I am not sure how I should go to work to do this. Any light that can possibly be shed on this problem will be very helpful.

Thanks in advance.

Answer 1

I have solved this problem, by checking for the cookies before the redirect in a Javascript method, and simply calling the JS method before the page loads using onload="someMethod();" in the body tag. Everything worked out fine, by using the parent.location to navigate to the new page. Tested in FF, Chrome and IE. Thus there was also no need for the ScriptEngine in this situation.