[p4] P4V's "no workspace selected" view of the depot

[Steve Robbins]

Hi,

I have a perforce server with depots "depot" and "spec".

When I run "p4v", the "Open Connection" dialog allows me the *option*
to select a workspace to open.  When I leave it blank, the main
window's "Depot Tree" tab shows both "depot" and "spec" under "//".  I
can browse both depots normally.  The workspace dropdown at the top
of the tab reads "(no workspace selected)".

If I choose a previously-created workspace that includes only part
of "//depot" and nothing from "//spec", then the "Depot Tree"
view is filtered and I can no longer see "//spec".

I find this behaviour counter-intuitive: I fully expect the "Workspace
Tree" view to be filtered, but the "Depot Tree" should be unmolested.

However, the real problem is that once you've chosen a named
workspace, there's no way to get back to the "(no workspace selected)"
view of the depot.  At least, I can't find one.  Help?

-Steve