--- a/camerauis/cameraxui/cxengine/inc/cxestatemachinebase.h	Tue Aug 31 15:03:46 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,133 +0,0 @@
-/*
-* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
-* All rights reserved.
-* This component and the accompanying materials are made available
-* under the terms of "Eclipse Public License v1.0"
-* which accompanies this distribution, and is available
-* at the URL "http://www.eclipse.org/legal/epl-v10.html".
-*
-* Initial Contributors:
-* Nokia Corporation - initial contribution.
-*
-* Contributors:
-*
-* Description:
-*
-*/
-
-#ifndef CXESTATEMACHINEBASE_H
-#define CXESTATEMACHINEBASE_H
-
-#include <QHash>
-#include <QString>
-#include "cxeerror.h"
-
-class CxeState;
-
-/**
-* CxeStateMachineBase is used as the base class for all finite state machines in the
-* engine. It's not a fully functional state machine in the sense that it does not provide any
-* mechanism for handling events that would trigged state changes. Instead,
-* it relies on the derived class to call setState() whenever the state
-* should change. The derived class should also provide a list of states
-* and allowed transitions so that CxeStateMachineBase can verify that each state
-* change is valid. A pure virtual function, handleStateChanged() should be
-* implemented by derived classes to handle notifing other interested objects about
-* the state change. This class cannot emit the signals itself, because it does not
-* derived from QObject and it handles all state IDs as plain integers instead of the
-* preferred class specific enumerations.
-*
-* CxeStateMachineBase does not derive from QObject to make easier for the engine
-* control implementation classes to derive from it. Additionally we avoid the overhead
-* brought by QObject.
-*
-* CxeStateMachineBase class is to be used for unit testing. Engine class should derive
-* from CxeStateMachine class.
-*/
-
-class CxeStateMachineBase
-{
-public:
-    /**
-    * CxeStateMachine constructor.
-    * @sa addState setInitialState
-    * @param stateMachineName  Name for this state machine (used for debug prints)
-    */
-    CxeStateMachineBase(const char *stateMachineName);
-    virtual ~CxeStateMachineBase();
-
-protected:
-    /**
-     * Add a new state to the machine. Takes ownership of state.
-     *
-     * @param state A CxeState object defining a name, ID, and allowed transitions for the
-     * new state. The CxeState ID must be unique and not to contain overlapping bits with other
-     * state ids, since bitwise AND operator is used for the state ids.
-     * @return False if adding failed due to incorrect id.
-     */
-    virtual bool addState(CxeState *state);
-
-    /**
-     * Initiate a state transition from current state to a given state ID. In cases that
-     * current state is same as the new state, method returns without doing anything. If the state
-     * transition is invalid, this function return false.
-     *
-     * @param stateId State ID of the new state
-     * @param error   Optional error code to be associated with the transition
-     * @return False if state change fails. True if changing is allowed, or the current state is same
-     * as the new state.
-     */
-    virtual bool setState(int stateId, CxeError::Id error = CxeError::None);
-
-    /**
-     * Set the initial state of the state machine. Can be called only once.
-     * This method will panic, if initial state is unknown, or initial state has already
-     * been set.
-     *
-     * @param stateId State ID for the initial state.
-     * @return False if state to be set intial state is not known, or initial
-     * state has already been set.
-     */
-    virtual bool setInitialState(int stateId);
-
-    /**
-     * Pure virtual function to be implemented by derived classes. Called when state changes.
-     * The implementation should emit a signal informing interested parties of a state change.
-     *
-     * @param newStateId State ID for the new state
-     * @param error      An error code associated with the state transition
-     */
-    virtual void handleStateChanged(int newStateId, CxeError::Id error) = 0;
-
-    /**
-     * Get current state ID. It is recommended for derived classes to create
-     * a new method (typically called state()) which returns the current state ID
-     * typecasted into a class specific enumeration.
-     * @return Current state ID
-     */
-    int stateId() const;
-
-    /**
-     * Verify if a state transition is possible.
-     * @param newStateId  State ID of the new state.
-     * @return Whether state transition is possible.
-     */
-    bool verifyStateChange(int newStateId);
-
-private:
-
-    //! Hash table of all states. stateId as key
-    QHash<int, CxeState *> mStates;
-
-    //! All states ORed together
-    int mStateBitsUsed;
-
-    //! Current state
-    int mStateId;
-
-    //! Name of this state machine (for debug prints)
-    QString mName;
-
-};
-
-#endif // CXESTATEMACHINEBASE_H