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diff --git a/kpovmodeler/pmiomanager.h b/kpovmodeler/pmiomanager.h
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+/*
+**************************************************************************
+                                 description
+                             --------------------
+    copyright            : (C) 2003 by Andreas Zehender
+    email                : [email protected]
+**************************************************************************
+
+**************************************************************************
+*                                                                        *
+*  This program is free software; you can redistribute it and/or modify  *
+*  it under the terms of the GNU General Public License as published by  *
+*  the Free Software Foundation; either version 2 of the License, or     *
+*  (at your option) any later version.                                   *
+*                                                                        *
+**************************************************************************/
+
+#ifndef PMIOMANAGER
+#define PMIOMANAGER
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <qstring.h>
+#include <qstringlist.h>
+#include <qptrlist.h>
+#include <qdict.h>
+
+class PMParser;
+class PMSerializer;
+class PMRenderer;
+class PMPart;
+
+class QIODevice;
+
+/**
+ * Description class for input and output formats.
+ *
+ * A format may provide the following services:
+ *
+ * Import: The class can provide a parser to load and import data
+ *
+ * Export: The class can provide a output device to export and save data
+ *
+ * Renderer: A renderer exists to render the exported data
+ *
+ * The class @ref PMIOManager stores a list of instances
+ * of this class
+ */
+class PMIOFormat
+{
+public:
+   /**
+    * Format type enum
+    */
+   enum Services { Import = 1, Export = 2, Renderer = 4,
+                   AllServices = Import | Export | Renderer };
+   /**
+    * Default constructor
+    */
+   PMIOFormat( );
+   /**
+    * Destructor
+    */
+   virtual ~PMIOFormat( );
+
+   /**
+    * Returns an unique name of this format.
+    */
+   virtual QString name( ) const = 0;
+   /**
+    * Returns a translated description of this format
+    */
+   virtual QString description( ) const = 0;
+   /**
+    * Returns the supported services
+    * (a bitwise combination of the Services enum values)
+    */
+   virtual int services( ) const = 0;
+   /**
+    * Returns a parser to parse the io device.
+    *
+    * The caller is responsible to delete the returned parser.
+    */
+   virtual PMParser* newParser( PMPart*, QIODevice* ) const
+   {
+      return 0;
+   };
+   /**
+    * Returns a parser to parse the byte array.
+    *
+    * The caller is responsible to delete the returned parser.
+    */
+   virtual PMParser* newParser( PMPart*, const QByteArray& ) const
+   {
+      return 0;
+   };
+   /**
+    * Returns an output device to export objects or the complete
+    * scene to the given io device.
+    *
+    * The caller is responsible to delete the returned device
+    */
+   virtual PMSerializer* newSerializer( QIODevice* )
+   {
+      return 0;
+   }
+   /**
+    * Returns a new renderer
+    */
+   virtual PMRenderer* newRenderer( PMPart* ) const
+   {
+      return 0;
+   }
+   /**
+    * Returns the mime type for this format
+    */
+   virtual QString mimeType( ) const
+   {
+      return QString::null;
+   }
+   /**
+    * Returns a list of patterns for the import file dialog
+    */
+   virtual QStringList importPatterns( ) const
+   {
+      return QStringList( );
+   }
+   /**
+    * Returns a list of patterns for the export file dialog
+    */
+   virtual QStringList exportPatterns( ) const
+   {
+      return QStringList( );
+   }
+};
+
+/**
+ * Manager class that handles all available input and output formats
+ * as well as renderers for one part
+ */
+class PMIOManager
+{
+public:
+   /**
+    * Creates an io manager for the part
+    */
+   PMIOManager( PMPart* part );
+   /**
+    * Deletes the io manager
+    */
+   ~PMIOManager( );
+
+   /**
+    * Adds a new format
+    */
+   void addFormat( PMIOFormat* format );
+   /**
+    * Removes a format by name
+    */
+   void removeFormat( const QString& name );
+
+   /**
+    * Returns the list of registered io formats
+    */
+   const QPtrList<PMIOFormat>& formats( ) const { return m_formats; }
+   /**
+    * Returns a view type by name
+    */
+   PMIOFormat* format( const QString& name ) const;
+   /**
+    * Returns the first io format that can handle the mime type
+    * or 0 if there is none
+    */
+   PMIOFormat* formatForMimeType( const QString& mime ) const;
+
+private:
+   QPtrList<PMIOFormat> m_formats;
+   QDict<PMIOFormat> m_dict;
+   PMPart* m_pPart;
+};
+
+#endif