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diff --git a/src/electronics/subcircuits.h b/src/electronics/subcircuits.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 SUBCIRCUITS_H
+#define SUBCIRCUITS_H
+
+#include <qobject.h>
+
+class CircuitDocument;
+class ECSubcircuit;
+class Subcircuits;
+inline Subcircuits *subcircuits();
+
+/**
+Interface for dealing with loading / saving / etc of subcircuits
+@author David Saxton
+*/
+class Subcircuits : public QObject
+{
+Q_OBJECT
+public:
+	~Subcircuits();
+	/**
+	 * Handles subcircuit creation when the user selects the subcircuit to be
+	 * created.
+	 * @param id Id of subcircuit; e.g. "sc/10"
+	 */
+	static ECSubcircuit* createSubcircuit( int id, CircuitDocument *circuitDocument, bool newItem, const char *newId );
+	/**
+	 * Loads a subcircuit into a subcircuit component
+	 */
+	static void initECSubcircuit( int subcircuitId, ECSubcircuit *ecSubcircuit );
+	/**
+	 * Reads in the config entries and adds the subcircuits found to the
+	 * component selector
+	 */
+	static void loadSubcircuits();
+	/**
+	 * Saves the given subcircuit to the appdata dir, updates the appropriate
+	 * config entries, and adds the subcircuit to the component selector.
+	 */
+	static void addSubcircuit( const QString &name, const QString &subcircuitXml );
+	/**
+	 * returns a path to the appdata dir, e.g. genFileName(2) might return
+	 * ~/.kde/share/apps/ktechlab/subcircuit_2.circuit
+	 */
+	static QString genFileName( const int nextId );
+	/**
+	 * Adds the given entry to the component selector
+	 */
+	static void updateComponentSelector( int id, const QString &name );
+	
+protected slots:
+	void slotItemRemoved( const QString &id );
+	
+private:
+	Subcircuits();
+	
+	friend Subcircuits* subcircuits();
+};
+
+
+inline Subcircuits* subcircuits()
+{
+	static Subcircuits *_subcircuits = new Subcircuits();
+	return _subcircuits;
+}
+
+#endif