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+/***************************************************************************
+ *   Copyright (C) 2003-2005 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 CIRCUITDOCUMENT_H
+#define CIRCUITDOCUMENT_H
+
+#include "icndocument.h"
+
+class Circuit;
+class Component;
+class Connector;
+class ECNode;
+class Element;
+class ICNDocument;
+class KTechlab;
+class Pin;
+class QTimer;
+class Switch;
+class Wire;
+
+class KActionMenu;
+
+typedef QValueList<Circuit*> CircuitList;
+typedef QValueList<Component*> ComponentList;
+typedef QValueList<QGuardedPtr<Connector> > ConnectorList;
+typedef QValueList<ECNode*> ECNodeList;
+typedef QValueList<Element*> ElementList;
+typedef QValueList<QGuardedPtr<Pin> > PinList;
+typedef QValueList<Switch*> SwitchList;
+typedef QValueList<QGuardedPtr<Wire> > WireList;
+
+class Circuitoid
+{
+public:
+	bool contains( Pin *node ) { return pinList.contains(node); }
+	bool contains( Wire *con ) { return wireList.contains(con); }
+	bool contains( Element *ele ) { return elementList.contains(ele); }
+	
+	void addPin( Pin *node ) { if (node && !contains(node)) pinList += node; }
+	void addWire( Wire *con ) { if (con && !contains(con)) wireList += con; }
+	void addElement( Element *ele ) { if (ele && !contains(ele)) elementList += ele; }
+
+	WireList wireList;
+	PinList pinList;
+	ElementList elementList;
+};
+
+/**
+CircuitDocument handles allocation of the components displayed in the ICNDocument
+to various Circuits, where the simulation can be performed, and displays the
+information from those simulations back on the ICNDocument
+@short Circuit view
+@author David Saxton
+*/
+class CircuitDocument : public ICNDocument
+{
+	Q_OBJECT
+	public:
+		CircuitDocument( const QString &caption, KTechlab *ktechlab, const char *name = 0L );
+		~CircuitDocument();
+	
+		virtual View *createView( ViewContainer *viewContainer, uint viewAreaId, const char *name = 0l );
+	
+		void calculateConnectorCurrents();
+		/**
+		 * Count the number of ExternalConnection components in the CNItemList
+		 */
+		int countExtCon( const ItemList &cnItemList ) const;
+		
+		virtual void update();
+	
+	public slots:
+		/**
+		 * Creates a subcircuit from the currently selected components
+		 */
+		void createSubcircuit();
+		void displayEquations();
+		void setOrientation0();
+		void setOrientation90();
+		void setOrientation180();
+		void setOrientation270();
+		void rotateCounterClockwise();
+		void rotateClockwise();
+		void itemFlip();
+		/**
+		 * Enables / disables / selects various actions depending on what is
+		 * selected or not.
+		 * @param plugContextMenu If true, then will insert actions into contextmenu
+		 */
+		virtual void slotInitItemActions( Item *item = 0L );
+		void requestAssignCircuits();
+		void componentAdded( Item * item );
+		void componentRemoved( Item * item );
+		void connectorAdded( Connector * connector );
+		virtual void slotUpdateConfiguration();
+	
+	protected:
+		virtual void itemAdded( Item * item );
+		virtual void fillContextMenu( const QPoint &pos );
+		virtual bool isValidItem( Item *item );
+		virtual bool isValidItem( const QString &itemId );
+		
+		KActionMenu * m_pOrientationAction;
+	
+	private slots:
+		void assignCircuits();
+	
+	private:
+		/**
+		 * If the given circuitoid can be a LogicCircuit, then it will be added to
+		 * m_logicCircuits, and return true. Else returns false.
+		 */
+		bool tryAsLogicCircuit( Circuitoid *circuitoid );
+		/**
+		 * Creates a circuit from the circuitoid
+		 */
+		Circuit *createCircuit( Circuitoid *circuitoid );
+		/**
+		 * @param node Current node (will be added, then tested for further
+		 * connections).
+		 * @param nodeList List of nodes in current partition.
+		 * @param unassignedNodes The pool of all nodes in the CircuitDocument
+		 * waiting for assignment.
+		 * @param onlyGroundDependent if true, then the partition will not use
+		 * circuit-dependent pins to include new pins while growing the
+		 * partition.
+		 */
+		void getPartition( Pin * pin, PinList * pinList, PinList * unassignedPins, bool onlyGroundDependent = false );
+		/**
+		 * Takes the nodeList (generated by getPartition), splits it at ground nodes,
+		 * and creates circuits from each split.
+		 */
+		void splitIntoCircuits( PinList * pinList );
+		/**
+		 * Construct a circuit from the given node, stopping at the groundnodes
+		 */
+		void recursivePinAdd( Pin * pin, Circuitoid *circuitoid, PinList * unassignedPins );
+		void deleteCircuits();
+	
+		QTimer *m_updateCircuitsTmr;
+		CircuitList m_circuitList;
+		ComponentList m_toSimulateList;
+		ComponentList m_componentList; // List is built up during call to assignCircuits
+		PinList m_pinList;
+		WireList m_wireList;
+		SwitchList m_switchList;
+};
+
+#endif
+