namedentity.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_NAMEDENTITY_H)
#define INCLUDED_NAMEDENTITY_H

#include "entitylib.h"
#include "eclasslib.h"
#include "generic/callback.h"
#include "nameable.h"

#include <set>

class NameCallbackSet
{
        typedef std::set<NameCallback> NameCallbacks;
        NameCallbacks m_callbacks;
    public:
        void insert (const NameCallback& callback)
        {
            m_callbacks.insert(callback);
        }
        void erase (const NameCallback& callback)
        {
            m_callbacks.erase(callback);
        }
        void changed (const std::string& name) const
        {
            for (NameCallbacks::const_iterator i = m_callbacks.begin(); i != m_callbacks.end(); ++i) {
                (*i)(name);
            }
        }
};

class NamedEntity
{
        EntityKeyValues& m_entity;
        NameCallbackSet m_changed;
        std::string m_name;
    public:
        NamedEntity (EntityKeyValues& entity) :
            m_entity(entity)
        {
        }
        std::string name () const
        {
            if (m_name.empty())
                return m_entity.getEntityClass().name();
            return m_name;
        }
        void attach (const NameCallback& callback)
        {
            m_changed.insert(callback);
        }
        void detach (const NameCallback& callback)
        {
            m_changed.erase(callback);
        }

        void identifierChanged (const std::string& value)
        {
            if (value.empty()) {
                m_changed.changed(m_entity.getEntityClass().name());
            } else {
                m_changed.changed(value);
            }
            m_name = value;
        }
        typedef MemberCaller1<NamedEntity, const std::string&, &NamedEntity::identifierChanged> IdentifierChangedCaller;
};

class RenderableNamedEntity: public OpenGLRenderable
{
        const NamedEntity& m_named;
        const Vector3& m_position;
    public:
        RenderableNamedEntity (const NamedEntity& named, const Vector3& position) :
            m_named(named), m_position(position)
        {
        }

        void render (RenderStateFlags state) const
        {
            glRasterPos3fv(m_position);
            GlobalOpenGL().drawString(m_named.name());
        }
};

#endif