[Telepathy] [Bug 18291] New: TpConnectionManager API is avoidably cumbersome

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Oct 29 05:54:12 PDT 2008


           Summary: TpConnectionManager API is avoidably cumbersome
           Product: Telepathy
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: telepathy-glib
        AssignedTo: telepathy at lists.freedesktop.org
        ReportedBy: will.thompson at collabora.co.uk

There are two main use cases Daf and I can think of for TpConnectionManager:

* Listing all protocols supported by all CMs (the single CM case is similar);
you would want to do this in Empathy's account dialog, for instance.

* Calling RequestConnection and connecting to NewConnections; the
AccountManager would want to do this.

Currently, the second case is easy (you create a TpCM, connect to the
NewConnections DBus signal, call the method, and ignore the got-info GLib
signals that will be emitted at various hard-to-predict times), but the first
is hard (even if #18207 is fixed):

- call tp_list_connection_managers
- when the callback fires, for each CM, connect to got-info
- when got-info fires:
  > if it's FILE, we're done for this CM.
  > if it's NONE:
    * call tp_cm_activate; the object is useless to us without the protocol
    * when got-info fires again for this CM:
      # if it's LIVE, we're done for this CM
      # if it's NONE, this CM is a writeoff.
- when we've finished or written off all CMs: actually do what we hoped to do.


- call tp_list_connection_manager_and_introspect_them
- when the callback fires, we're ready to go.

In fact the got-info signal is not very useful at all. The only case when we
might want such a signal is:

* haze grew a new protocol, and either restarted or emitted a magic new signal
to say so
* we're still showing the Accounts dialog
* we want to update it on the fly.

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