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+/*  Project Magic 2.0
+    Destroyer Studios LLC
+    Copyright © 1997-2005. All Rights Reserved.
+
+    SUBSYSTEM:    Magic.exe
+    FILE:         Command.h
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Base class (interface) for command pattern.  A 
+    command encapsulates a single editing operation
+    that may be performed on a document.  Each command
+    may be done or undone multiple times.  The specialized
+    implementations for each type of operation are re-
+    sponsible for providing a means to return the model
+    to the prior state.
+*/
+
+#ifndef Command_h
+#define Command_h
+
+#include "Text.h"
+
+// +--------------------------------------------------------------------+
+
+class MagicDoc;
+class Solid;
+class Model;
+
+// +--------------------------------------------------------------------+
+
+class Command
+{
+public:
+   static const char* TYPENAME() { return "Command"; }
+
+   Command(const char* name, MagicDoc* document);
+   virtual ~Command();
+
+   // operations
+   virtual void   Do();
+   virtual void   Undo();
+
+   const char*    Name()   const { return name; }
+
+protected:
+   Text           name;
+   MagicDoc*      document;
+};
+
+// +--------------------------------------------------------------------+
+
+#endif Command_h