/*
  SessionImpl  -  holds the complete session data to be edited by the user
 
  Copyright (C)         Lumiera.org
    2008,               Hermann Vosseler <Ichthyostega@web.de>
 
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 2 of the
  License, or (at your option) any later version.
 
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
* *****************************************************/


#include "proc/mobject/session/sessionimpl.hpp"
#include "proc/mobject/placement.hpp"
#include "include/error.hpp"

namespace mobject
  {
  namespace session
    {
    
    /** create a new empty session with default values.
     *  @note any exception arising while creating this
     *        default session will inevitably halt the
     *        system (and this is desirable)
     */
    SessionImpl::SessionImpl (DefsManager& defs)  throw()
      : Session(defs),
        focusEDL_(0),
        edls(1), 
        fixture(new Fixture) 
      {
      }
    
    
    /** @internal used by SessionManager#clear
     *            discard all EDL content, without
     *            touching global configuration.
     */
    void 
    SessionImpl::clear ()
    {
      try
        {
          edls.clear();
          edls.resize(1);
          focusEDL_ = 0;
        }
      catch (...)
        {
          focusEDL_ = 0;
          throw lumiera::error::Fatal ("unexpected exception while clearing EDLs");
        }
    }
    
    
    bool 
    SessionImpl::isValid ()
    {
      UNIMPLEMENTED ("session self test");
      return false; // TODO
    }
    
    
    void 
    SessionImpl::add (PMO& placement)
    {
      UNIMPLEMENTED ("add Placement to the current EDL");
    }
    
    
    bool 
    SessionImpl::remove (PMO& placement)
    {
      UNIMPLEMENTED ("search and remove a given Placement from current EDL");
      return false; // TODO
    }

    /// @deprecated should not grant direct access to EDL objects
    EDL& 
    SessionImpl::currEDL () 
    { 
      ASSERT (focusEDL_ < edls.size());
      return  edls[focusEDL_];
    }
    
    
    PFix& 
    SessionImpl::getFixture () 
    { 
      return fixture; 
    }
    
    
    void 
    SessionImpl::rebuildFixture () 
    { 
      UNIMPLEMENTED ("rebuild Fixture"); 
    }



  } // namespace mobject::session

} // namespace mobject