[Telepathy] [Bug 17324] New: An interface to retrieve display-friendly representations for contacts

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17324

           Summary: An interface to retrieve display-friendly
                    representations for contacts
           Product: Telepathy
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: low
         Component: telepathy-spec
        AssignedTo: telepathy at lists.freedesktop.org
        ReportedBy: mikhail.zabaluev at nokia.com


As of version 0.17.9, the Telepathy specification provides two sorts of
displayable representations for contact handles: ID strings obtainable using
Connection.InspectHandles, and aliases from the Aliasing interface. There are
use cases that aren't served well by either. If the alias name is not available
for a contact, the UI should display the address. Normalized handle IDs may
have details that obscure the bits relevant for the user, but are important for
correct identification in the protocol or connection manager implementation. A
good example is URI parameters in SIP addresses such as "user=phone";
technically part of address identity, but practically the user shouldn't have
to care about them in most cases. 

It's useful to have a way to retrieve string representations for contacts
satisfying the following requirements:
1) Display-friendly so as to omit technical details (e.g. URI parameters, the
default scheme prefix) non-essential for making the contact's address
practically identifiable to the user.
2) Not suitable to uniquely identify a handle. For string s retrieved using the
proposed API, conn.InspectHandles(conn.RequestHandles([s])) will not
necessarily return s, moreover, such strings are not expected to be usable for
requesting handles.
3) Not intended for long-term storage or indexing. The normalized handle ID
should be used for that.
4) Available for retrieval at all connection states, without network
roundtrips.

The default implementation (and the client-side wrapper) could fall back to
retrieving handle IDs.


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