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+/*  Starshatter OpenSource Distribution
+    Copyright (c) 1997-2004, Destroyer Studios LLC.
+    All Rights Reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    * Neither the name "Destroyer Studios" nor the names of its contributors
+      may be used to endorse or promote products derived from this software
+      without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
+
+    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