/*! @file picollection.h
 * @brief Custom elements collection
*/
/*
	PIP - Platform Independent Primitives
	Peer - named I/O ethernet node, forming self-organized peering network
	Ivan Pelipenko peri4ko@yandex.ru

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 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 Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef PICOLLECTION_H
#define PICOLLECTION_H

#include "piobject.h"

#ifdef DOXYGEN

/** @brief Add existing element "object" in group with name "group"
 * \relatesalso PICollection
 * \details If there is no group with name "group" it will be created.
 * Only one element of the class "object" can be in group "group". If
 * this is already exists nothing be happens. \n "object" should to
 * be pointer to object based on PIObject. */
#  define ADD_TO_COLLECTION(group, object)

/** @brief Add new element of class "class" in group with name "group"
 * \relatesalso PICollection
 * \details If there is no group with name "group" it will be created.
 * Only one element of the class "class" can be in group "group". If
 * this is already exists nothing be happens. \n "class" should to
 * be name of the any class based on PIObject. */
#  define ADD_NEW_TO_COLLECTION(group, class)

#else

#  define ADD_TO_COLLECTION(group, object) \
	static PICollection::CollectionAdder _PIP_ADD_COUNTER(_collection_adder_)(#group, object, false);

#  define ADD_TO_COLLECTION_WITH_NAME(group, object, name) \
	static PICollection::CollectionAdder _PIP_ADD_COUNTER(_collection_adder_)(#group, object, #name, false);

#  define ADD_NEW_TO_COLLECTION(group, class) \
	static PICollection::CollectionAdder _PIP_ADD_COUNTER(_collection_adder_)(#group, new class(), true);

#  define ADD_NEW_TO_COLLECTION_WITH_NAME(group, class, name) \
	static PICollection::CollectionAdder _PIP_ADD_COUNTER(_collection_adder_)(#group, new class(), #name, true);

#endif

class PIP_EXPORT PICollection
{
	friend class __PICollectionInitializer;
public:
	PICollection() {;}
	
	//! @brief Returns all existing groups by their names
	static PIStringList groups();
	
	//! @brief Returns all elements of group "group"
	static PIVector<const PIObject * > groupElements(const PIString & group);
	
	static bool addToGroup(const PIString & group, const PIObject * element);

	class PIP_EXPORT CollectionAdder {
	public:
		CollectionAdder(const PIString & group, const PIObject * element, const PIString & name = PIString(), bool own = false);
	};
	
protected:
	struct PIP_EXPORT Group {
		Group(const PIString & name_ = PIString()) {name = name_;}
		PIString name;
		PIVector<const PIObject * > elements;
	};
	
	static PIVector<Group> & _groups();
	
};

#endif // PICOLLECTION_H