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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
 *            tasktree.h
 *
 *  Tue Mar 27 11:07:48 CEST 2012
 *  Copyright 2012 Jonas Suhr Christensen
 *  jsc@umbraculum.org
 ****************************************************************************/

/*
 *  This file is part of Munia.
 *
 *  Munia 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.
 *
 *  Munia 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 Munia; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#ifndef __MUNIA_TASKTREE_H__
#define __MUNIA_TASKTREE_H__

#include <list>
#include <map>
#include <exception>

#include "task.h"

class node;
typedef std::list<class node*> NodeList;

class node
{
public:
  taskid_t id;
  node* parent;
  task_t data;
  NodeList children;

  std::string toXML(std::string prefix);
};

typedef node node_t;

class TaskTree {
  friend class XmlParser;
public:
  TaskTree();
  ~TaskTree();

  taskid_t createId();

  TaskIdList insertAsChild(taskid_t parentid, taskid_t id, task_t data) throw (std::exception);
  TaskIdList remove(taskid_t id) throw (std::exception);
  TaskIdList move(taskid_t id, taskid_t newParentId) throw (std::exception);
  TaskIdList updateData(taskid_t id, const std::string &name,
                        const std::string &value) throw (std::exception);
  task_t data(taskid_t id) throw (std::exception);

  TaskIdList bfs(taskid_t id) throw (std::exception);

  TaskIdList ancestorList(taskid_t id) throw (std::exception);

  void toStdOut();

  std::string toXML();
  void fromXML(std::string xml);

  taskid_t nextid;

private:
  node_t* createNode(taskid_t id);
  void insertChild(node_t* parent, node_t* child);

  node_t* root;
  std::map<int, node_t*> id2node;
};

#endif/*__MUNIA_TASKTREE_H__*/