Security Settings prevent the usage of this method :-(

Question

hi,
since i began using adobe LiveCycle products (well one month by now), mainly the LC Designer, i'm getting the same error by using certain methods (here i have to free translate out of the german):
"NotAllowedError: security settings prevent the usage of this property or method. App.trustedFunction:14:XFA:all[0].sf_tab[0]:initialize
is there someone, who can explain, what's do be done to get rid of it?
thanks,
valerio

Answer 1

It looks like your trying to run a function defined at the document level (ie: from within an event on a field) but a trusted function must be defined at the folder level (ie: in a .js file in the Acrobat /JavaScripts/ folder). That how trusted functions get their priveledges, when Acrobat is started, it evaluates the JavaScript in the .js files, sees that the function is marked as trusted and gives it the special priveledges it needs for when it is called. Here's an example of script you could put in a .js file:
saveFunc = app.trustedFunction(function (path) {
app.beginPriv();
try {
event.target.saveAs(path);
} catch (err) {
console.println("Error: " + err);
app.endPriv();
Then in your form you would simply call saveFunc().
Another thing I just noticed, I don't believe you will be able to use the Document.newPage() method from an XFA form (form from Designer) whether you run it from a trusted function or not. Acrobat is blocked from being able to make changes like this to an XFA form, because the underlying structure of an XFA form and an AcroForm is so different that even if you could make it work you wouldn't get the results you'd expect.
Chris
Adobe Enterprise Developer Support