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/*
Copyright (C) 2010 Paul Davis
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.
*/
#ifndef __pbd_property_list_h__
#define __pbd_property_list_h__
#include <map>
#include "pbd/libpbd_visibility.h"
#include "pbd/property_basics.h"
class XMLNode;
namespace PBD {
/** A list of properties, mapped using their ID */
class LIBPBD_API PropertyList : public std::map<PropertyID, PropertyBase*>
{
public:
PropertyList ();
PropertyList (PropertyList const &);
virtual ~PropertyList();
void get_changes_as_xml (XMLNode *);
void invert ();
/** Add a property (of some kind) to the list. Used when
constructing PropertyLists that describe a change/operation.
*/
bool add (PropertyBase* prop);
/* Code that is constructing a property list for use
* in setting the state of an object uses this.
*
* Defined below, once we have Property<T>
*/
template<typename T, typename V> bool add (PropertyDescriptor<T> pid, const V& v);
protected:
bool _property_owner;
};
/** A variant of PropertyList that does not delete its
* property list in its destructor. Objects with their
* own Properties store them in an OwnedPropertyList
* to avoid having them deleted at the wrong time.
*/
class LIBPBD_API OwnedPropertyList : public PropertyList
{
public:
OwnedPropertyList();
/* Classes that own property lists use this to add their
* property members to their plists. Note that it takes
* a reference argument rather than a pointer like
* one of the add() methods in PropertyList.
*/
bool add (PropertyBase& p);
};
}
#endif /* __pbd_property_list_h__ */
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