reorderSymFltrLens.h

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/*********************************************************************
** Copyright (c) 2002 MAK Technologies, Inc.
** All rights reserved.
*********************************************************************/
/*********************************************************************
** $RCSfile: reorderSymFltrLens.h,v $ $Revision: 1.11 $ $State: Exp $
*********************************************************************/


#ifndef DtReorderingSymbolFilterLens_H_
#define DtReorderingSymbolFilterLens_H_

#include "filterLenses/symbolFilterLens.h"

#include "symbology/symbol.h"
#include "ngutil/dtqlist.h"

#include "filterLenses/filterLensesDefines.h"
class DT_DLL_filterLenses DtReorderingSymbolFilterLens : public DtSymbolFilterLens
{
   Q_OBJECT

public:

   DtReorderingSymbolFilterLens(const char * name = 0, DtLensArea * parent = 0);

   virtual ~DtReorderingSymbolFilterLens();

   virtual void grabRelevantData(DtSymbolList* original, 
                                 DtSymbolList* modified,
                                 QPixmap* background = 0,
                                 bool isGlobal = false);

   virtual void setNumberOfLayers(int numLayers);
   virtual int numberOfLayers() const;

   virtual void setDefaultLayer(int index);
   virtual int defaultLayer() const;

   virtual void reorderLayers(DtSymbolList *list);

   virtual bool updateLayers() const;

public slots:
   virtual void setUpdateLayers(bool b = true);
   virtual void reorderSymbolDestroyed(QObject*);

protected:
   virtual void resetLayers();

   virtual void reorderLists(DtSymbolList *origianlList,
      DtSymbolList *modifiedList);

   virtual void addSymbolToLayer(DtSymbol* sym, int layer);

   virtual bool createClone() const;

   virtual bool deleteModifiedList();

   virtual void modifiedListAboutToBeFreed(DtSymbolList* sl);

protected:
   int myNumberOfLayers;
   int myDefaultLayerIndex;
   
   DtPtrQList<DtSymbolList*> myLayerList;
   DtSymbolList* myOrderedList;
   bool myUpdateLayers;
};

#endif //DtReorderingSymbolFilterLens_H_