Undoable Class Reference

interface to implement to get an UndoMemento for the object implementing this interface to get its current state. More...

#include <iundo.h>

Inheritance diagram for Undoable:

Public Member Functions
virtual	~Undoable ()
virtual UndoMemento *	exportState () const =0
	export the current state via UndoMemento
virtual void	importState (const UndoMemento *state)=0
	restore a previously stored memento

Detailed Description

interface to implement to get an UndoMemento for the object implementing this interface to get its current state.

greebo: This is the abstract base class for an Undoable object. Derive from this class if your instance/object should be Undoable.

The exportState method has to allocate a new UndoMemento with all the necessary object data and return its pointer, so it can be referenced to later.

The importState() method should re-import the values saved in the UndoMemento (could be named restoreFromMemento() as well).

Definition at line 66 of file iundo.h.

virtual Undoable::~Undoable ( ) [inline, virtual]

Definition at line 69 of file iundo.h.

virtual UndoMemento* Undoable::exportState ( ) const [pure virtual]

export the current state via UndoMemento

Implemented in Face, and Brush.

virtual void Undoable::importState ( const UndoMemento * state ) [pure virtual]

restore a previously stored memento

Parameters:

state

state that should be restored

Implemented in Face, and Brush.

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