drawerColl.h

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/*********************************************************************
** Copyright (c) 2001 MAK Technologies, Inc.
** All rights reserved.
*********************************************************************/
/*********************************************************************
** $RCSfile: drawerColl.h,v $ $Revision: 1.9 $ $State: Exp $
*********************************************************************/


#ifndef DtDrawerColl_H_
#define DtDrawerColl_H_

#include "symbolDrawerInterface/symbolDrawerInterfaceDefines.h"

#include "symbolDrawerInterface/symbolDrawer.h"
#include "symbolDrawerInterface/nullDrawer.h"

#include <vlutil/vlConfig.h>
#include <map>
#include <string>

class DtDrawerKey;

typedef std::map<std::string, DtSymbolDrawerCreatorFcn> DtDrawerMap;



class DT_DLL_symbolDrawerInterface DtDrawerColl
{
public:
   DtDrawerColl();
   DtDrawerColl( DtDrawerColl * nextComponent );
   virtual ~DtDrawerColl();

   virtual DtSymbolDrawer *   lookupDrawer( const DtDrawerKey & key ) = 0;

   virtual DtDrawerColl *     component();

   virtual void               setComponent(DtDrawerColl *c);

   virtual void               addComponent(DtDrawerColl *c);
   virtual bool               init();
   virtual void               addDrawerCreator(const QString& str, DtSymbolDrawerCreatorFcn fcn);
   virtual DtSymbolDrawer*    createDrawer(const QString& str);

protected:
   //Protected so not used.  Prefer class to be singleton.
   DtDrawerColl(const DtDrawerColl& orig);
   DtDrawerColl& operator=(const DtDrawerColl& orig);
   
protected:
   DtDrawerColl *       myComponent;
   DtNullDrawer         myNullDrawer;

   DtDrawerMap          myMap;
};

#endif