/*
   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 char* name ) const {
	for ( NameCallbacks::const_iterator i = m_callbacks.begin(); i != m_callbacks.end(); ++i )
	{
		( *i )( name );
	}
}
};

class NamedEntity : public Nameable
{
EntityKeyValues& m_entity;
NameCallbackSet m_changed;
CopiedString m_name;
public:
NamedEntity( EntityKeyValues& entity ) : m_entity( entity ){
}
const char* name() const {
	if ( string_empty( m_name.c_str() ) ) {
		return m_entity.getEntityClass().name();
	}
	return m_name.c_str();
}
void attach( const NameCallback& callback ){
	m_changed.insert( callback );
}
void detach( const NameCallback& callback ){
	m_changed.erase( callback );
}

void identifierChanged( const char* value ){
	if ( string_empty( value ) ) {
		m_changed.changed( m_entity.getEntityClass().name() );
	}
	else
	{
		m_changed.changed( value );
	}
	m_name = value;
}
typedef MemberCaller<NamedEntity, void(const char*), &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( vector3_to_array( m_position ) );
	GlobalOpenGL().drawString( m_named.name() );
}
};



#endif