[Bug 29421] New: Channel-specific handle API is lacking

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29421

           Summary: Channel-specific handle API is lacking
           Product: Telepathy
           Version: git master
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: medium
         Component: tp-qt4
        AssignedTo: telepathy-bugs at lists.freedesktop.org
        ReportedBy: ollisal at gmail.com
         QAContact: telepathy-bugs at lists.freedesktop.org


TpQt4 Channel objects currently go to great lengths to ensure an application
doesn't have to build Contact objects for the members of the channel by itself.
This breaks, however, if channel-specific handles are in use (used in eg. XMPP
multi-user chats, where users have nicknames, not always directly exposing
their global JID). Currently, only a best-effort local handle -> global handle
map is provided.

API should be added to provide a local contact pointer (weakref?) to a global
contact pointer mapping. Maintaining this mapping requires additional D-Bus
roundtrips to construct the global contacts, so it should be an optionally
requested Feature.

If feasible, API should be added to Tp::Contact to tell if it's a
channel-specific contact, and to access the corresponding global contact, if
any. This needs synchronizing the handle owner contact object construction and
group change contact object construction and making the association there,
though.

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