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// File: TDF_LabelNode.hxx
// ------------------
// Author: DAUTRY Philippe
// <fid@fox.paris1.matra-dtv.fr>
// Copyright: Matra Datavision 1997
// Version: 0.0
// History: Version Date Purpose
// 0.0 Feb 6 1997 Creation
//#include <TDF_Data.hxx>
#ifndef TDF_LabelNode_HeaderFile
#define TDF_LabelNode_HeaderFile
#include <TCollection_AsciiString.hxx>
#include <TDF_Attribute.hxx>
#include <TDF_LabelNodePtr.hxx>
#include <NCollection_IncAllocator.hxx>
class TDF_Attribute;
class TDF_AttributeIterator;
class TDF_ChildIterator;
class TDF_Data;
class Handle_TDF_Data;
class TDF_Label;
#define KEEP_LOCAL_ROOT
enum {
TDF_LabelNodeImportMsk = (int) 0x80000000, // Because the sign bit (HP).
TDF_LabelNodeAttModMsk = 0x40000000,
TDF_LabelNodeMayModMsk = 0x20000000,
TDF_LabelNodeFlagsMsk = (TDF_LabelNodeImportMsk \
| TDF_LabelNodeAttModMsk \
| TDF_LabelNodeMayModMsk)
};
//=======================================================================
//class: TDF_LabelNode
//=======================================================================
class TDF_LabelNode {
public :
// Public Methods
// --------------------------------------------------------------------------
// Father access
inline TDF_LabelNode* Father() const
{ return myFather; };
// Brother access
inline TDF_LabelNode* Brother() const
{ return myBrother; };
// Child access
inline TDF_LabelNode* FirstChild() const
{ return myFirstChild; };
// Attribute access
inline const Handle(TDF_Attribute)& FirstAttribute() const
{ return myFirstAttribute; };
// Tag access
inline Standard_Integer Tag() const
{ return myTag; };
// Depth access
inline Standard_Integer Depth() const
{ return (myFlags & ~TDF_LabelNodeFlagsMsk); };
// IsRoot
inline Standard_Boolean IsRoot() const
{ return myFather == NULL; };
// Data
Standard_EXPORT TDF_Data * Data() const;
// Flag AttributesModified access
inline void AttributesModified(const Standard_Boolean aStatus)
{
myFlags = (aStatus) ?
(myFlags | TDF_LabelNodeAttModMsk) :
(myFlags & ~TDF_LabelNodeAttModMsk);
if (aStatus) AllMayBeModified();
};
inline Standard_Boolean AttributesModified() const
{ return ((myFlags & TDF_LabelNodeAttModMsk) != 0); };
// Flag MayBeModified access
inline void MayBeModified(const Standard_Boolean aStatus)
{ myFlags = (aStatus) ?
(myFlags | TDF_LabelNodeMayModMsk) :
(myFlags & ~TDF_LabelNodeMayModMsk); };
inline Standard_Boolean MayBeModified() const
{ return ((myFlags & TDF_LabelNodeMayModMsk) != 0); };
// Constructor
TDF_LabelNode(TDF_Data* Data); // Useful for root node.
// Destructor
~TDF_LabelNode();
// Memory management
void * operator new (size_t aSize,
const Handle(NCollection_IncAllocator)& anAlloc)
{ return anAlloc -> Allocate (aSize); }
#ifndef __BORLANDC__
void operator delete ( void * aBuffer , const Handle(NCollection_IncAllocator)& anAlloc )
{
anAlloc->Free(aBuffer);
}
#endif
void operator delete(void *) { }
// nothing to do in operator delete since IncAllocator does not need it
// Public Friends
// --------------------------------------------------------------------------
friend class TDF_Data;
friend class TDF_Label;
private :
void* operator new(size_t);
// Private Methods
// --------------------------------------------------------------------------
// Constructor
TDF_LabelNode(const Standard_Integer Tag, TDF_LabelNode* Father);
// Others
void AddAttribute(const Handle(TDF_Attribute)& afterAtt,
const Handle(TDF_Attribute)& newAtt);
void RemoveAttribute(const Handle(TDF_Attribute)& afterAtt,
const Handle(TDF_Attribute)& oldAtt);
TDF_LabelNode* RootNode ();
const TDF_LabelNode* RootNode () const;
Standard_EXPORT void AllMayBeModified();
// Tag modification
inline void Tag(const Standard_Integer aTag)
{ myTag = aTag; };
// Depth modification
inline void Depth(const Standard_Integer aDepth)
{ myFlags = ((myFlags & TDF_LabelNodeFlagsMsk) | aDepth); };
// Flag Imported access
inline void Imported(const Standard_Boolean aStatus)
{ myFlags = (aStatus) ?
(myFlags | TDF_LabelNodeImportMsk) :
(myFlags & ~TDF_LabelNodeImportMsk); };
inline Standard_Boolean IsImported() const
{ return ((myFlags & TDF_LabelNodeImportMsk) != 0); };
// Private Fields
// --------------------------------------------------------------------------
TDF_LabelNodePtr myFather;
TDF_LabelNodePtr myBrother;
TDF_LabelNodePtr myFirstChild;
TDF_LabelNodePtr myLastFoundChild; //jfa 10.01.2003
Standard_Integer myTag;
Standard_Integer myFlags; // Flags & Depth
Handle(TDF_Attribute) myFirstAttribute;
#ifdef KEEP_LOCAL_ROOT
TDF_Data * myData;
#endif
#ifdef DEB
TCollection_AsciiString myDebugEntry;
#endif
};
#endif
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