attribfactory.h

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#pragma once
 
/*+
________________________________________________________________________
 
 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Kristofer Tingdahl
 Date:          07-10-1999
 RCS:           $Id$
________________________________________________________________________
 
-*/
 
#include "attributeenginemod.h"
#include "sets.h"
 
namespace Attrib
{
 
class Desc;
class Provider;
 
typedef Provider* (*ProviderCreater)(Desc&);
 
mExpClass(AttributeEngine) ProviderFactory
{
public:
                        ProviderFactory();
                        ~ProviderFactory();
 
                        /*Interface from attribs' initClass() */
    void                addDesc( Desc*, ProviderCreater );
    void                remove(const char* attrnm);
 
    int                 size() const                    { return descs_.size();}
    const Desc&         getDesc( int idx ) const        { return *descs_[idx]; }
    const Desc*         getDesc(const char*) const;
 
    Provider*           create( Desc& ) const;
    Desc*               createDescCopy( const char* nm ) const;
    void                updateAllDescsDefaults();
 
protected:
 
    int                 indexOf( const char* ) const;
    ObjectSet<Desc>     descs_;
    TypeSet<ProviderCreater> creaters_;
 
};
 
mGlobal(AttributeEngine) extern ProviderFactory& PF();
 
}; //Namespace