echHierNode.h

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/*********************************************************************
** Copyright (c) 2002 MAK Technologies, Inc.
** All rights reserved.
*********************************************************************/
/*********************************************************************
** $RCSfile: echHierNode.h,v $ $Revision: 1.9 $ $State: Exp $
*********************************************************************/
#ifndef DtEchelonHierarchyNode_H_
#define DtEchelonHierarchyNode_H_


#include <QtCore/QObject>
#include "ngutil/dtqlist.h"
#include "symbolMapper/modelKey.h"

#include "tmqt/tmqtDefines.h"
class DT_DLL_tmqt DtEchelonHierarchyNode : public QObject
{
   Q_OBJECT

public:

   DtEchelonHierarchyNode(const DtModelKey& key);

   virtual ~DtEchelonHierarchyNode();

   virtual const DtPtrQList<DtEchelonHierarchyNode*>& childList() const;
   virtual const DtPtrQList<DtEchelonHierarchyNode*>& previousChildList() const;
   virtual void addChild(DtEchelonHierarchyNode* child);
   virtual void removeChild(DtEchelonHierarchyNode* child);
   virtual void removeAllChildren();

   virtual const DtEchelonHierarchyNode* parent() const;
   virtual DtEchelonHierarchyNode* parent();
   virtual void setParent(DtEchelonHierarchyNode* parent);

   virtual void invalidateParent();
   virtual bool parentValid() const;

   virtual void setHeight(int value);
   virtual int height() const;

   virtual int parentHeight() const;

   virtual const DtModelKey& modelKey() const;
   virtual void setModelKey(const DtModelKey& key);

   virtual bool isLeaf() const;
   virtual bool isRoot() const;
   virtual const DtEchelonHierarchyNode* root() const;
   virtual DtEchelonHierarchyNode* root();

   virtual bool hasChild(const DtModelKey&) const;

protected slots:
   virtual void parentDestroyed();

signals:
   void parentChanged(const DtModelKey& myKey);

protected:

   DtModelKey  myModelKey; 
   int myHeight;

   DtEchelonHierarchyNode* myParent;
   bool myParentValid; 
   DtPtrQList<DtEchelonHierarchyNode*> myChildren;
   DtPtrQList<DtEchelonHierarchyNode*> myPreviousChildren;

private:
   DtEchelonHierarchyNode(const DtEchelonHierarchyNode& orig);

   DtEchelonHierarchyNode& operator=(const DtEchelonHierarchyNode& orig);
};

#endif