[bug #15313] multiple notification sent on button pushing

[reandras]

URL:
  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=15313>

                 Summary: multiple notification sent on button pushing
                 Project: GNUstep
            Submitted by: reandras
            Submitted on: Thu 12/29/05 at 14:46
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open

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Details:

It is difficult to explain, but i am trying it:
I have a (sub)view A with to buttons (add, remove) in a (super)view S.
If I push the add button, a new (sub)view of this type (A) is created by the
view S with the [addsubview:positioned:relativeTo:] method on a
"addnewbutton" notification (defaultcenter) with this very (sub)view A as
notification object.
If I push the remove button, the sender (sub)view A object is removed from
the superview S on a "removebutton" notification (defaultcenter) with this
very (sub)view A as notification object.
The (super)view S is registered for each (sub)view A. 
The remove works fine. But after some removed (sub)view A, at the third or 
fourth try, the superview S receives multiple notifications with the same
object and creates multiple (sub)views A in place of only one.
It sometimes results a crash with message "insertObject:atIndex: out of
range".
I don't know if this a bug at all, or a bug in nsview or nsnotificationcenter
or nsbutton. Strange.
Remark: I use the debian sarge package of gnustep, not a most recent from
cvs. Any help is welcome. thanks







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