Getting all l10n values stored in localized bundle - localization

Question

I'm building a FF extension, and I'm processing some xhtml for myself in order to supporn subforms loading, so I have to identify the elements with l10n attributes defined and add them the string value. Because the l10n can't be shared from main code to content scripts (because isn't a simple JSON object), I managed the situation by getting the loaded keys values and defining an "localized array bundle", like this:
lStrings = ["step_title", ........ ];
for (var i = 0; i < lStrings.length; i++) {
bundle[lStrings[i]] = this.locale(lStrings[i]);
}
The thing is, I have to write here every entry in the .properties files... SO, do you know how to access this key values? I already tryed with .toString .toLocalString and inspecting the object, but can't find the way the object to be capable of returning all the key collection.
Do you have a better idea for improvement?

Answer 1

var yourStringBundle = Services.strings.createBundle('chrome://blah#jetpack/content/bootstrap.properties?' + Math.random()); /* Randomize URI to work around bug 719376 */
var props = yourStringBundle.getSimpleEnumeration();
// MDN says getSimpleEnumeration returns nsIPropertyElement // https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIStringBundle#getSimpleEnumeration%28%29
while (props.hasMoreElements()) {
var prop = props.getNext();
// doing console.log(prop) says its an XPCWrappedObject but we see QueryInterface (QI), so let's try QI'ing to nsiPropertyElement
var propEl = prop.QueryInterface(Ci.nsIPropertyElement);
// doing console.log(propEl) shows the object has some fields that interest us
var key = propEl.key;
var str = propEl.value;
console.info(key, str); // there you go
}
See comments for learning. Nice quesiton. I learned more about QI from replying.