home *** CD-ROM | disk | FTP | other *** search
- #ifndef K3DSDK_ISTATE_CONTAINER_H
- #define K3DSDK_ISTATE_CONTAINER_H
-
- // K-3D
- // Copyright (c) 1995-2004, Timothy M. Shead
- //
- // Contact: tshead@k-3d.com
- //
- // 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- /** \file
- \author Tim Shead (tshead@k-3d.com)
- */
-
- namespace k3d
- {
-
- /// Abstract interface for an object that stores state and can restore it on demand (memento design pattern)
- class istate_container
- {
- public:
- virtual ~istate_container() { }
-
- /// When called, the implementation should restore whatever state it encapsulates
- virtual void restore_state() = 0;
-
- protected:
- istate_container() {}
- istate_container(const istate_container& RHS) {}
- istate_container& operator = (const istate_container& RHS) { return *this; }
- };
-
- } // namespace k3d
-
- #endif // !K3DSDK_ISTATE_CONTAINER_H
-
-