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// Copyright (C) 2008 Lukas Lalinsky
//
// 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#ifndef DIAGRAMITEMFACTORY_H
#define DIAGRAMITEMFACTORY_H
#include <QMap>
#include <QStringList>
#include "utils/singelton.h"
class DiagramItem;
class DiagramItemProperties;
class DiagramItemFactory : public Singelton<DiagramItemFactory>
{
class CreatorBase
{
public:
virtual DiagramItem *create() = 0;
virtual DiagramItemProperties *createPropertiesEditor(QWidget *parent = 0) = 0;
};
template <typename ItemType>
class Creator : public CreatorBase
{
public:
DiagramItem *create()
{ return new ItemType(); }
DiagramItemProperties *createPropertiesEditor(QWidget *parent = 0)
{ return ItemType::createPropertiesEditor(parent); }
};
public:
static DiagramItem *create(const QString &key)
{
DiagramItemFactory *inst = DiagramItemFactory::instance();
if (!inst->m_map.contains(key))
return NULL;
return inst->m_map[key]->create();
}
static DiagramItemProperties *createPropertiesEditor(const QString &key, QWidget *parent = 0)
{
DiagramItemFactory *inst = DiagramItemFactory::instance();
if (!inst->m_map.contains(key))
return NULL;
return inst->m_map[key]->createPropertiesEditor(parent);
}
static QStringList keys()
{
DiagramItemFactory *inst = DiagramItemFactory::instance();
return inst->m_map.keys();
}
protected:
template <typename Type> void add()
{
m_map[Type::staticTypeName()] = new Creator<Type>();
}
QMap<QString, CreatorBase*> m_map;
DiagramItemFactory();
friend class Singelton<DiagramItemFactory>;
};
#define FACTORY_ADD_TYPE(ST) add<ST>();
#endif
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