Obviously I meant:
scriptLoader.loadSubScript(spec, context);
(I also meant "its prototype" not "it's prototype. :-)
On Aug 7, 2012, at 3:51 PM, Matthew Gertner wrote:
> I am using the content-document-global-created observer topic to add a
> function to content windows when they are created. The function is used to
> load a subscript like this:
>
> var foo = window.loadSubscript("spec"); // loadSubscript() uses the subscript
> loader internally
>
> So the subscript should run with chrome privileges (loadSubscript is a
> function defined in chrome). If foo is a function then I can call it from
> content. However, if foo is an object constructor, it's prototype doesn't get
> through to the content page. In other words, imagine that loadSubscript looks
> like this:
>
> function loadSubscript(spec) {
> var context = {};
> var scriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"].
> getService(Ci.mozIJSSubScriptLoader);
> scriptLoader.loadSubScript(spec);
> return context;
> }
>
> And the subscript is something like:
>
> function foo() {
> }
>
> foo.prototype = {
> do_something: function() { return "Hello, world!"; }
> };
>
> I would expect to see foo.prototype in the content page script at the
> beginning of this message, but instead I see "undefined". I guess this is a
> security issue but no warnings or errors are displayed when I test in a
> Firefox debug build. Does anyone know what gives?
>
> Matt
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