model.h

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/*
 Copyright (C) 2001-2006, William Joseph.
 All Rights Reserved.

 This file is part of GtkRadiant.

 GtkRadiant 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.

 GtkRadiant 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 GtkRadiant; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#if !defined(INCLUDED_MODEL_H)
#define INCLUDED_MODEL_H

#include "entitylib.h"
#include "traverselib.h"
#include "generic/callback.h"
#include "stream/stringstream.h"
#include "os/path.h"
#include "moduleobserver.h"

class EModel: public ModuleObserver
{
        ResourceReference m_resource;
        scene::Traversable& m_traverse;
        scene::Node* m_node;
        Callback m_modelChanged;

    public:
        EModel (scene::Traversable& traversable, const Callback& modelChanged) :
            m_resource(""), m_traverse(traversable), m_node(0), m_modelChanged(modelChanged)
        {
            m_resource.attach(*this);
        }
        ~EModel ()
        {
            m_resource.detach(*this);
        }

        void realise ()
        {
            m_resource.get()->load();
            m_node = m_resource.get()->getNode();
            if (m_node != 0) {
                m_traverse.insert(*m_node);
            }
        }
        void unrealise ()
        {
            if (m_node != 0) {
                m_traverse.erase(*m_node);
            }
        }

        void modelChanged (const std::string& value)
        {
            std::string cleaned = os::standardPath(value);
            m_resource.detach(*this);
            m_resource.setName(cleaned.c_str());
            m_resource.attach(*this);
            m_modelChanged();
        }
        typedef MemberCaller1<EModel, const std::string&, &EModel::modelChanged> ModelChangedCaller;

        const std::string& getName () const
        {
            return m_resource.getName();
        }
        scene::Node* getNode () const
        {
            return m_node;
        }
};

class SingletonModel
{
        TraversableNode m_traverse;
        EModel m_model;
    public:
        SingletonModel () :
            m_model(m_traverse, Callback())
        {
        }

        void attach (scene::Traversable::Observer* observer)
        {
            m_traverse.attach(observer);
        }
        void detach (scene::Traversable::Observer* observer)
        {
            m_traverse.detach(observer);
        }

        scene::Traversable& getTraversable ()
        {
            return m_traverse;
        }

        void modelChanged (const std::string& value)
        {
            m_model.modelChanged(value);
        }
        typedef MemberCaller1<SingletonModel, const std::string&, &SingletonModel::modelChanged> ModelChangedCaller;

        scene::Node* getNode () const
        {
            return m_model.getNode();
        }
};

#endif