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Editor/Undo/IUndoObject.h

@@ -0,0 +1,44 @@
+////////////////////////////////////////////////////////////////////////////
+//
+//  Crytek Engine Source File.
+//  Copyright (C), Crytek Studios, 2001.
+// -------------------------------------------------------------------------
+//  File name:   IUndoObject.h
+//  Version:     v1.00
+//  Created:     5/2/2002 by Timur.
+//  Compilers:   Visual C++ 6.0
+//  Description: Interface for implementation of IUndo objects.
+// -------------------------------------------------------------------------
+//  History:
+//
+////////////////////////////////////////////////////////////////////////////
+
+#ifndef __IUndoObject_h__
+#define __IUndoObject_h__
+
+#if _MSC_VER > 1000
+#pragma once
+#endif
+
+//! IUndoObject is a interface of general Undo object.
+struct IUndoObject
+{
+	// Virtual destructor.
+	virtual ~IUndoObject() {};
+
+	//! Called to delete undo object.
+	virtual void Release() { delete this; };
+	//! Return size of this Undo object.
+	virtual int GetSize() = 0;
+	//! Return description of this Undo object.
+	virtual const char* GetDescription() = 0;
+
+	//! Undo this object.
+	//! @param bUndo If true this operation called in response to Undo operation.
+	virtual void Undo( bool bUndo=true ) = 0;
+
+	//! Redo undone changes on object.
+	virtual void Redo() = 0;
+};
+
+#endif // __IUndoObject_h__