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inode.h
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2008-01-23
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#ifndef K3DSDK_INODE_H
#define K3DSDK_INODE_H
// K-3D
// Copyright (c) 1995-2005, 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
\brief Declares inode, an abstract interface which MUST be implemented by ALL document nodes
\author Tim Shead (tshead@k-3d.com)
*/
#include "almost_equal.h"
#include "iunknown.h"
#include "signal_system.h"
#include <string>
namespace k3d
{
class idocument;
class iplugin_factory;
/////////////////////////////////////////////////////////////////////////////
// inode
/// Abstract interface which MUST be implemented by ALL document nodes
class inode :
public virtual iunknown
{
public:
virtual ~inode() {}
/// Sets the node name (could fail or be overridden)
virtual void set_name(const std::string Name) = 0;
/// Returns the node name
virtual const std::string name() = 0;
/// Returns a reference to the factory that created this node
virtual iplugin_factory& factory() = 0;
/// Returns a reference to the document that owns this node
virtual idocument& document() = 0;
/// Defines a signal that will be emitted iff the node is deleted
typedef sigc::signal<void> deleted_signal_t;
virtual deleted_signal_t& deleted_signal() = 0;
/// Defines a signal that will be emitted if the node name changes (including via undo / redo)
typedef sigc::signal<void> name_changed_signal_t;
virtual name_changed_signal_t& name_changed_signal() = 0;
protected:
inode() {}
inode(const inode&) {}
inode& operator=(const inode&) { return *this; }
};
/// Specialization of almost_equal that tests inode pointers for equality
template<>
class almost_equal<inode*>
{
public:
almost_equal(const boost::uint64_t) { }
inline const bool operator()(inode* const A, inode* const B) const { return A == B; }
};
} // namespace k3d
#endif // !K3DSDK_INODE_H