terminalsecurity/SCP/DmEventNotifier/inc/DmEventScheduler.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 09:07:52 +0200
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: This header contains the class which creates the condition schedule.
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*
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*/
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#ifndef __DMEVENTSCHEDULER_H__
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#define __DMEVENTSCHEDULER_H__
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// System Includes
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#include <e32base.h>
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#include <e32def.h>
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#include <csch_cli.h> // RScheduler
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#include <schinfo.h>  // TSchedulerItemRef, TTaskInfo... 
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//User includes
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#include "DmEventServiceBase.h"
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#include "DmEventNotifierCommon.h"
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#include "DmEventNotifierInternal.h"
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const TUid KAppDmEventNotifierUid = TUid::Uid(KAppUidDmEventNotifier); //UID3 from .mmp file
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//Forward declarations
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class CSwInstallObserver;
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/**
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 * Install scheduler is responsible for creating the condition schedules and notifying server
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 * when they expire
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 *
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 *  @since  S60 v5.2
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 */
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NONSHARABLE_CLASS(CDmEventScheduler) : public CBase
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    {
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    public:
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        /** Two phase construction **/
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        static CDmEventScheduler* NewL();
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        static CDmEventScheduler* NewLC();
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        /** Destructor **/
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        virtual ~CDmEventScheduler();
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        /** Member functions **/
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        /**
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         * This function creates all the condition schedule required by the services
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         *
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         * @since   S60   v5.2
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         * @param   aService - the service to be scheduled. If not specified all will be
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         * scheduled
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         * @return  None. Can leave with system wide errors  
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         */
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        void CreateConditionScheduleL(CDmEventServiceBase* aService = NULL);
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        /**
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         * This function creates one condition schedule with task for a service
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         *
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         * @since   S60   v5.2
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         * @param   aSchedulerItem  - A unique id for the schedule
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         * @param   aScheduler      - Task schedule client side interface
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         * @param   aDefaultRunTime - Task schedule time
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         * @param   aNewTaskId      - The new task in after it is created
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         * @param   aConditions     - The condition array
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         * @param   aService        - The service base pointer
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         * @return  KErrNone or system wide error
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         */
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        TInt CreateConditionScheduleWithTaskL (TSchedulerItemRef& aSchedulerItem, 
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                RScheduler& aScheduler,
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                const TTsTime& aDefaultRunTime, 
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                TInt& aNewTaskId,
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                CArrayFixFlat<TTaskSchedulerCondition>* &aConditions,
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                CDmEventServiceBase* aService);
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        /**
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         * This function will wait until a service operation is complete. For example, during software uninstallation
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         * this function returns only when the uninstallation is complete.
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         *
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         * @since   S60   v5.2
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         * @param   aTaskName - Name of the task
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         * @return None. Can leave with system wide error
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         */
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        void WaitAndCreateConditionScheduleL(TName aTaskName);
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    private:
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        /**
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         * Default constructor
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         *
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         * @since   S60   v5.2
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         * @param   NOne
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         * @return 
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         */
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        CDmEventScheduler();
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        /**
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         * Constructs member variables
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         *
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         * @since   S60   v5.2
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         * @return None. Can leave with system wide error.
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         */
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        void ConstructL();
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        /**
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         * Deletes any outstanding task and schedule
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         *
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         * @since   S60   v5.2
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         * @return  None. Can leave with system wide error
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         */
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        void DeleteScheduleL();
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        /**
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         * Creates the condition array for the provided service
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         *
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         * @since   S60   v5.2
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         * @param   aService - the service for which condition array is to be created
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         * @return  Condition array. Can leave with system wide errors. 
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         */
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        CSchConditionArray* CreateConditionLC(CDmEventServiceBase* aService);
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        /**
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         * Finds the expired service when scheduler triggers it.
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         *
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         * @since   S60   v5.2
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         * @param   aTaskName - the task name of the expired schedule
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         * @return  base class pointer of the service
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         */
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        CDmEventServiceBase* FindExpiredService(TName& aTaskName);
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        /**
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         * This functions notifies other registered servers when a service expires
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         *
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         * @since   S60   v5.2
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         * @param   aServiceId - the service that has expired
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         * @param   aOpn - the operation the service has undergone
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         * @return  None. Can leave with system wide errors 
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         */
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        void NotifyRegisteredServersL(THandlerServiceId aServiceId, THandlerOperation aOpn);
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        /**
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         * Checks whether the schedule is already created or not
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         *
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         * @since   S60   v5.2
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         * @return  ETrue if schedule is already created; otherwise EFalse. Can leave
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         * with system wide errors.
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         */
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        TBool IsScheduleEnabledL();
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        /**
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         * Once schedule is created successfully, this function is called to set the
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         * schedule as enabled. otherwise it is called with disabled.
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         *
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         * @since   S60   v5.2
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         * @param   Status of the schedule
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         * @return  None. System wide errors 
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         */
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        void SetScheduleEnabledL(TBool aValue);
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    private:
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        /**
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         * The client side symbian scheduler
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         */
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        RScheduler iScheduler;
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        /**
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         * The scheduler item reference
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         */
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        TSchedulerItemRef iConditionScheduleHandle;
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        /**
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         * Array to hold the services objects
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         */
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        TFixedArray<CDmEventServiceBase*, KMaxServices> iServices;
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    };
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#endif // __DMEVENTSCHEDULER_H__