Sortable: Add support for use in iframes

[eithed]

Hi!

I've found out that sortable fails completely when called out from parent document, on elements within an iframe. It would seem to me that mouse events that are being used are not on the document within which the given sortable resides, as dragging outside the frame actually does move the elements within (however, I've not looked within the source).

Please find the jsfiddle here: ​http://jsfiddle.net/YWL88/1/

Git version (which helped with the similar, draggable issue, jsfiddle here: ​http://jsfiddle.net/YWL88/2/) throws an exception.

Tested under Chrome.

Thanks!

[tj.vantoll]

Thanks eithed,

We've been trying to convert our widgets to use an internal reference to the document they were created in across the board. It seems sortable still has a number of unqualified references to document.

[Marcus Warren]

Sortable: Add support for iframes

Fixes #9604 Closes gh-1443

Changeset: 17c7f698a2894211bbb5f2d63750f5b3b84bb0ab

[Marcus Warren]

Sortable: Add support for iframes

Fixes #9604 Closes gh-1443 (cherry picked from commit 17c7f698a2894211bbb5f2d63750f5b3b84bb0ab)

Changeset: fa460f36dc8191e4fe23c02bcbcc7d5006b51d7e