[patch][ccla] PopupContainer load error within a cross-domain IFRAME

[guest]

If PopupContainer? is loaded from within an IFRAME that is loaded cross-domain from the original page, an error occurs (FF,IE,Opera).

In Firefox the error is:

[Exception... "'Permission denied to get property HTMLDocument._parentWindow' when calling method: [nsIDOMEventListener::handleEvent]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "<unknown>" data: no]

Steps to reproduce:

1. load test_Menu2.html cross-domain from within an iframe.
2. above error happens during dojo onLoad processing.

Cause:

PopupManager?.registerAllWindows() calls dojo.html.getDocumentWindow() which tries to access the _parentWindow property of the outer window, which violates the rules.

Fix:

The attached patch fixes my test case, by catching the error and falling back to working from the IFRAME window - which isn't ideal, but a sensible fallback and no errors.

It might be one idea to look at d.html.getDocumentWindow, but there are a number of other try-catch blocks around it throughout the code, so presumably it's not regarded as error-safe.

[guest]

grr. Trac lost my name :(

chuck robert.coup@… into the CC