/*
  Scope  -  nested search scope for properties of placement
 
  Copyright (C)         Lumiera.org
    2009,               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/scope.hpp"
#include "proc/mobject/session/query-focus-stack.hpp"
#include "proc/mobject/mobject.hpp"
//#include "proc/mobject/session/track.hpp"
//#include "proc/mobject/placement.hpp"
//#include "proc/mobject/session/mobjectfactory.hpp"
//#include "proc/asset/track.hpp"

namespace mobject {
namespace session {
  
  
  
  /** TODO??? */
  Scope::Scope (PlacementMO const& constitutingPlacement)
    : anchor_(constitutingPlacement)
  {
    
  }
  
  
  ScopeLocator::ScopeLocator()
    : focusStack_(new QueryFocusStack)
  {
    
  }
  
  
  
  /** discover the enclosing scope of a given Placement */
  Scope const&
  Scope::containing (PlacementMO const& aPlacement)
  {
    UNIMPLEMENTED ("scope discovery");
  }
  
  
  /** retrieve the parent scope which encloses this scope.
   *  @throw error::Invalid if this is the root scope
   */
  Scope const&
  Scope::getParent()  const
  {
    UNIMPLEMENTED ("retrieve the enclosing parent scope");
  }
  
  
  /** @return true if this is the outmost (root) scope */
  bool
  Scope::isRoot()  const
  {
    UNIMPLEMENTED ("detection of root scope");
  }
  
  
  /** enumerate the path of nested scopes up to root scope.
   *  @return an iterator which starts with this scope and
   *          successively yields outer scopes, stopping at root.
   */
  Scope::IterType_
  Scope::ascend()  const
  {
    UNIMPLEMENTED ("ascend scope hierarchy up to root");
  }

  
  
  
  
  
}} // namespace mobject::session