// This file is generated by WOK (CPPExt).
// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to 
// this header file considered to be the "object code" form of the original source.

#ifndef _TDF_Delta_HeaderFile
#define _TDF_Delta_HeaderFile

#ifndef _Standard_HeaderFile
#include <Standard.hxx>
#endif
#ifndef _Standard_DefineHandle_HeaderFile
#include <Standard_DefineHandle.hxx>
#endif
#ifndef _Handle_TDF_Delta_HeaderFile
#include <Handle_TDF_Delta.hxx>
#endif

#ifndef _Standard_Integer_HeaderFile
#include <Standard_Integer.hxx>
#endif
#ifndef _TDF_AttributeDeltaList_HeaderFile
#include <TDF_AttributeDeltaList.hxx>
#endif
#ifndef _TCollection_ExtendedString_HeaderFile
#include <TCollection_ExtendedString.hxx>
#endif
#ifndef _MMgt_TShared_HeaderFile
#include <MMgt_TShared.hxx>
#endif
#ifndef _Handle_TDF_AttributeDelta_HeaderFile
#include <Handle_TDF_AttributeDelta.hxx>
#endif
#ifndef _Standard_Boolean_HeaderFile
#include <Standard_Boolean.hxx>
#endif
#ifndef _Standard_OStream_HeaderFile
#include <Standard_OStream.hxx>
#endif
class Standard_OutOfRange;
class TDF_Data;
class TDF_AttributeDelta;
class TDF_LabelList;
class TDF_AttributeDeltaList;
class TCollection_ExtendedString;


//! A delta set is available at <aSourceTime>. If <br>
//!          applied, it restores the TDF_Data in the state it <br>
//!          was at <aTargetTime>. <br>
class TDF_Delta : public MMgt_TShared {

public:

  //! Creates a delta. <br>
  Standard_EXPORT   TDF_Delta();
  //! Returns true if there is nothing to undo. <br>
//! <br>
        Standard_Boolean IsEmpty() const;
  //! Returns true if the Undo action of <me> is <br>
//!          applicable at <aCurrentTime>. <br>
//! <br>
        Standard_Boolean IsApplicable(const Standard_Integer aCurrentTime) const;
  //! Returns the field <myBeginTime>. <br>
        Standard_Integer BeginTime() const;
  //! Returns the field <myEndTime>. <br>
        Standard_Integer EndTime() const;
  //! Adds in <aLabelList> the labels of the attribute deltas. <br>
//!          Caution: <aLabelList> is not cleared before use. <br>
  Standard_EXPORT     void Labels(TDF_LabelList& aLabelList) const;
  //! Returns the field <myAttDeltaList>. <br>
       const TDF_AttributeDeltaList& AttributeDeltas() const;
  //! Returns a name associated with this delta. <br>
        TCollection_ExtendedString Name() const;
  //! Associates a name <theName> with this delta <br>
        void SetName(const TCollection_ExtendedString& theName) ;
  
  Standard_EXPORT     void Dump(Standard_OStream& OS) const;


friend class TDF_Data;


  DEFINE_STANDARD_RTTI(TDF_Delta)

protected:

  //! Validates <me> at <aBeginTime>. If applied, it <br>
//!          restores the TDF_Data in the state it was at <br>
//!          <anEndTime>. Reserved to TDF_Data. <br>
  Standard_EXPORT     void Validity(const Standard_Integer aBeginTime,const Standard_Integer anEndTime) ;
  //! Adds an AttributeDelta to the list. Reserved to <br>
//!          TDF_Data. <br>
  Standard_EXPORT     void AddAttributeDelta(const Handle(TDF_AttributeDelta)& anAttributeDelta) ;



private: 

  
  Standard_EXPORT     void BeforeOrAfterApply(const Standard_Boolean before) const;
  
  Standard_EXPORT     void Apply() ;

Standard_Integer myBeginTime;
Standard_Integer myEndTime;
TDF_AttributeDeltaList myAttDeltaList;
TCollection_ExtendedString myName;


};


#include <TDF_Delta.lxx>



// other Inline functions and methods (like "C++: function call" methods)


#endif