------------------------------------------------------------------------------
-- Copyright (c) 2014-2015, Natacha Porté                                   --
--                                                                          --
-- Permission to use, copy, modify, and distribute this software for any    --
-- purpose with or without fee is hereby granted, provided that the above   --
-- copyright notice and this permission notice appear in all copies.        --
--                                                                          --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         --

         Callback : in Callback_Refs.Reference)
      is
         use type Ada.Calendar.Time;

         Now : constant Ada.Calendar.Time := Ada.Calendar.Clock;
         Actual_Time : Periodic_Time := Time;
      begin
         if Actual_Time.Period > 0.0 then
            while Actual_Time.Origin < Now loop
               Actual_Time.Origin := Actual_Time.Origin + Actual_Time.Period;
            end loop;
         end if;

         if Map.Is_Empty then
            if Global_Worker /= null and then Global_Worker.all'Terminated then
               Unchecked_Free (Global_Worker);
            end if;

            if Global_Worker = null then

         Search :
         while Entry_Maps.Has_Element (Cursor) loop
            if Entry_Maps.Element (Cursor) = Callback then
               declare
                  Old_Time : constant Periodic_Time := Entry_Maps.Key (Cursor);
               begin
                  Map.Delete (Cursor);

                  if Old_Time.Period > 0.0 then
                     Insert (Old_Time, Callback);
                  end if;
               end;

               exit Search;
            end if;

            Entry_Maps.Next (Cursor);
         end loop Search;