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diff --git a/src/mechanics/mechanicsdocument.h b/src/mechanics/mechanicsdocument.h
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+++ b/src/mechanics/mechanicsdocument.h
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+/***************************************************************************
+ *   Copyright (C) 2004 by David Saxton                                    *
+ *   david@bluehaze.org                                                    *
+ *                                                                         *
+ *   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 MECHANICSDOCUMENT_H
+#define MECHANICSDOCUMENT_H
+
+#include "itemdocument.h"
+
+class KTechlab;
+class MechanicsGroup;
+class MechanicsItem;
+class MechanicsSimulation;
+
+typedef QValueList<MechanicsItem*> MechItemList;
+typedef QValueList<MechanicsItem*> MechanicsItemList;
+
+/**
+@author David Saxton
+*/
+class MechanicsDocument : public ItemDocument
+{
+Q_OBJECT
+public:
+	MechanicsDocument( const QString &caption, KTechlab *ktechlab, const char *name = 0 );
+	~MechanicsDocument();
+	
+	virtual View *createView( ViewContainer *viewContainer, uint viewAreaId, const char *name = 0l );
+	
+	virtual bool isValidItem( const QString &itemId );
+	virtual bool isValidItem( Item *item );
+	
+	virtual void deleteSelection();
+	virtual void copy();
+	virtual void selectAll();
+	virtual ItemGroup *selectList() const;
+	MechanicsItem *mechanicsItemWithID( const QString &id );
+	virtual Item* addItem( const QString &id, const QPoint &p, bool newItem );
+	/**
+	 * Adds a QCanvasItem to the delete list to be deleted, when
+	 * flushDeleteList() is called
+	 */
+	virtual void appendDeleteList( QCanvasItem *qcanvasItem );
+	/**
+	 * Permantly deletes all items that have been added to the delete list with
+	 * the appendDeleteList( QCanvasItem *qcanvasItem ) function.
+	 */
+	virtual void flushDeleteList();
+	/**
+	 * Register an item with the ICNDocument.
+	 */
+	virtual bool registerItem( QCanvasItem *qcanvasItem );
+
+protected:
+	MechanicsGroup *m_selectList;
+	MechanicsSimulation *m_mechanicsSimulation;
+};
+
+
+#endif