This class discribes the services we need to
implement Delta and Undo/Redo services.

AttributeDeltas are applied in an unpredictable
order. But by the redefinition of the method
IsNowApplicable, a condition can be verified
before application. If the AttributeDelta is not
yet applicable, it is put at the end of the
AttributeDelta list, to be treated later. If a
dead lock if found on the list, the
AttributeDeltas are forced to be applied in an
unpredictable order.
More...

#include <TDF_AttributeDelta.hxx>

Inheritance diagram for TDF_AttributeDelta:

[legend]

Public Member Functions
virtual void	Apply ()=0
	Applies the delta to the attribute. More...

TDF_Label	Label () const
	Returns the label concerned by <me>. More...

Handle_TDF_Attribute	Attribute () const
	Returns the reference attribute. More...

Standard_GUID	ID () const
	Returns the ID of the attribute concerned by <me>. More...

virtual Standard_OStream &	Dump (Standard_OStream &OS) const
	Dumps the contents. <br> More...

Standard_OStream &	operator<< (Standard_OStream &OS) const

Public Member Functions inherited from MMgt_TShared
virtual void	Delete () const
	Memory deallocator for transient classes. More...

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...

virtual	~Standard_Transient ()
	Destructor must be virtual. More...

virtual void	ShallowDump (Standard_OStream &) const

virtual const Handle_Standard_Type &	DynamicType () const
	Returns a type information object about this object. More...

Standard_Boolean	IsInstance (const Handle_Standard_Type &theType) const
	Returns a true value if this is an instance of Type. More...

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...

Standard_Boolean	IsKind (const Handle_Standard_Type &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

virtual Handle_Standard_Transient	This () const
	Returns a Handle which references this object. Must never be called to objects created in stack. More...

Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...

Protected Member Functions
	TDF_AttributeDelta (const Handle< TDF_Attribute > &anAttribute)

Detailed Description

This class discribes the services we need to
implement Delta and Undo/Redo services.

AttributeDeltas are applied in an unpredictable
order. But by the redefinition of the method
IsNowApplicable, a condition can be verified
before application. If the AttributeDelta is not
yet applicable, it is put at the end of the
AttributeDelta list, to be treated later. If a
dead lock if found on the list, the
AttributeDeltas are forced to be applied in an
unpredictable order.

Constructor & Destructor Documentation

TDF_AttributeDelta::TDF_AttributeDelta ( const Handle< TDF_Attribute > & anAttribute )

protected

Member Function Documentation

virtual void TDF_AttributeDelta::Apply ( )

pure virtual

Applies the delta to the attribute.

Implemented in TDataStd_DeltaOnModificationOfByteArray, TDataStd_DeltaOnModificationOfExtStringArray, TDataStd_DeltaOnModificationOfRealArray, TDataStd_DeltaOnModificationOfIntArray, TNaming_DeltaOnModification, TDataStd_DeltaOnModificationOfIntPackedMap, TDF_DeltaOnAddition, TDF_DeltaOnForget, TDF_DeltaOnResume, TNaming_DeltaOnRemoval, TDF_DefaultDeltaOnModification, TDF_DeltaOnModification, and TDF_DefaultDeltaOnRemoval.

Handle_TDF_Attribute TDF_AttributeDelta::Attribute ( ) const

Returns the reference attribute.

virtual Standard_OStream& TDF_AttributeDelta::Dump ( Standard_OStream & OS ) const

virtual

 Dumps the contents. <br>

Standard_GUID TDF_AttributeDelta::ID ( ) const

Returns the ID of the attribute concerned by <me>.

TDF_Label TDF_AttributeDelta::Label ( ) const

Returns the label concerned by <me>.

Standard_OStream& TDF_AttributeDelta::operator<< ( Standard_OStream & OS ) const

inline

The documentation for this class was generated from the following file:

TDF_AttributeDelta.hxx

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation