Opens the directory containing the file specified by the uri.
which must be a file: uri pointing to a file that the application has access to.
| this |
a [class@Portal] |
| parent |
parent window information |
| uri |
the URI to open |
| flags |
options for this call |
| cancellable |
optional [[email protected]] |
| callback |
a callback to call when the request is done |
| data |
data to pass to |