/*+
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* Copyright (c) 2006 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:  The implementation of LCD service+
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*+
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*/+
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+
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+
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#include <locodserviceplugin.h>+
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+
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#include "locodservice.h"+
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#include "debug.h"+
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+
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// ======== MEMBER FUNCTIONS ========+
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+
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// ---------------------------------------------------------------------------+
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// Creates a service object based on the service plug in objects+
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// ---------------------------------------------------------------------------+
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//+
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CLocodService* CLocodService::NewL(CLocodServicePlugin& aPlugin)+
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    {+
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    CLocodService* self = new (ELeave) CLocodService(aPlugin);+
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    CleanupStack::PushL(self);+
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    self->ConstructL();+
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    CleanupStack::Pop(self);+
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    return self;+
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    }+
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+
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// ---------------------------------------------------------------------------+
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// C++ destructor+
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// ---------------------------------------------------------------------------+
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//+
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CLocodService::~CLocodService()+
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    {+
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    delete iPlugin;+
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    iRequests.Close();+
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    TRACE_FUNC+
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    }+
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+
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// ---------------------------------------------------------------------------+
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// return the plugin instance+
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// ---------------------------------------------------------------------------+
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//+
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CLocodServicePlugin& CLocodService::Plugin()+
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    {+
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    return *iPlugin;+
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    }+
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+
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+
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// ---------------------------------------------------------------------------+
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// A request is sent to service plug in to manage their services+
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// ---------------------------------------------------------------------------+
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//+
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TInt CLocodService::ManageService(TLocodBearer aBearer, TBool aStatus)+
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    {+
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    TRACE_INFO((_L("[Srvc %d] [SrvcState 0x%04x]"), iPlugin->ImplementationUid().iUid, iServiceStatus))+
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    +
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    // if there is an outstanding request which has the same bearer,+
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    // remove all later enqueued request, and+
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    // enqueue this request if the bearer status is different from the ongoing one.+
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    TInt count = iRequests.Count();+
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    for (TInt i = 0; i < count; i++)+
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        {+
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        if (iRequests[i].iBearer == aBearer && iRequests[i].iRequesting)+
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            {+
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            for (TInt j = count - 1; j > i; j--)+
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                {+
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                if (iRequests[j].iBearer == aBearer)+
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                    {+
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                    TRACE_INFO((_L("[Srvc %d] [ManSrvc] Remove buffered request(Bearer 0x%04x status %d)"), +
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                        iPlugin->ImplementationUid().iUid, aBearer, iRequests[j].iStatus))+
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                    iRequests.Remove(j);+
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                    }+
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                }+
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            if ((!iRequests[i].iStatus && aStatus) || (iRequests[i].iStatus && !aStatus))+
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                {+
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                TRACE_INFO((_L("[Srvc %d] [ManSrvc] Buffer request(Bearer 0x%04x status %d)"), +
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                    iPlugin->ImplementationUid().iUid, aBearer, aStatus))+
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                return iRequests.Append(TLocodServiceRequest(aBearer, aStatus));+
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                }+
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            else+
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                {+
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                TRACE_INFO((_L("[Srvc %d] [ManSrvc] Request(Bearer 0x%04x status %d) discarded"), +
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                    iPlugin->ImplementationUid().iUid, aBearer, aStatus))+
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                return KErrNone;+
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                }+
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            }+
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        }+
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    +
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    // else if the latest bearer status in this service plugin is different,+
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    // Start ManageService()+
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    if ( aStatus && !(iServiceStatus & aBearer) ||+
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        !aStatus && (iServiceStatus & aBearer))+
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        {+
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        TLocodServiceRequest request(aBearer, aStatus);+
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        request.iRequesting = ETrue;+
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        TInt err = iRequests.Append(request);+
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        TRACE_INFO((_L("[Srvc %d] [ManSrvc] Issue request(Bearer 0x%04x status %d)"), +
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            iPlugin->ImplementationUid().iUid, aBearer, aStatus))+
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        if (!err)+
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            {+
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            iPlugin->ManageService(aBearer, aStatus);+
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            }+
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        return err;+
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        }+
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    +
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    // else the latest bearer status in this service plugin is the same,+
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    // do nothing+
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    TRACE_INFO((_L("[Srvc %d] [ManSrvc] Request(Bearer 0x%04x status %d) discarded"), +
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        iPlugin->ImplementationUid().iUid, aBearer, aStatus))+
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    return KErrNone;+
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    }+
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+
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// ---------------------------------------------------------------------------+
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// Based on the status of bearer either the request is removed or a new manage +
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// service is issued+
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// ---------------------------------------------------------------------------+
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//+
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void CLocodService::ManageServiceCompleted(TLocodBearer aBearer, +
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    TBool aStatus, TInt err)+
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    {+
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    TRACE_INFO((_L("[Srvc %d] [ManSrvc complete] (Bearer 0x%04x status %d) return %d"), +
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        iPlugin->ImplementationUid().iUid, aBearer, aStatus, err))    +
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    // Save the latest status of this bearer+
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    if (!err)+
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        {+
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        if (aStatus)+
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            {+
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            iServiceStatus |= aBearer;+
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            }+
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        else+
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            {+
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            iServiceStatus &= (~aBearer);+
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            }+
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        TRACE_INFO((_L("[Srvc %d] [SrvcState 0x%04x]"), iPlugin->ImplementationUid().iUid, iServiceStatus))+
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        }+
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    +
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    // Find the completed request and remove it from the request list.+
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    TInt count = iRequests.Count();+
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    for (TInt i = 0; i < count; i++)+
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        {+
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        if (iRequests[i].iBearer == aBearer && iRequests[i].iRequesting)+
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            {+
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            TRACE_INFO((_L("[Srvc %d] [ManSrvc completed] Remove completed request(Bearer 0x%04x status %d)"), +
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                iPlugin->ImplementationUid().iUid, aBearer, iRequests[i].iStatus))            +
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            iRequests.Remove(i);+
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            break;+
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            }+
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        }+
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    +
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    // Find the next request and start ManageService if the status is changed.+
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    count = iRequests.Count();+
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    for (TInt i = 0; i < count; i++)+
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        {+
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        if (iRequests[i].iBearer == aBearer)+
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            {+
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            if ( (iRequests[i].iStatus && !(iServiceStatus & aBearer)) ||+
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                 (!iRequests[i].iStatus && (iServiceStatus & aBearer)))+
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                {+
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                iRequests[i].iRequesting = ETrue;+
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                TRACE_INFO((_L("[Srvc %d] [ManSrvc completed] Issue buffered request(Bearer 0x%04x status %d)"), +
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                    iPlugin->ImplementationUid().iUid, aBearer, iRequests[i].iStatus))+
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                iPlugin->ManageService(iRequests[i].iBearer, iRequests[i].iStatus);+
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                }+
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            else+
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                {+
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                TRACE_INFO((_L("[Srvc %d] [ManSrvc completed] Remove buffered request(Bearer 0x%04x status %d)"), +
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                    iPlugin->ImplementationUid().iUid, aBearer, iRequests[i].iStatus))            +
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                iRequests.Remove(i);+
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                }+
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            break;+
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            }+
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        }+
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    }+
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+
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// ---------------------------------------------------------------------------+
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// return if there are request pending+
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// ---------------------------------------------------------------------------+
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//+
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TBool CLocodService::HasServiceToManage() const+
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    {+
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    return iRequests.Count();+
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    }+
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+
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// ---------------------------------------------------------------------------+
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// C++ default constructor+
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// ---------------------------------------------------------------------------+
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//+
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CLocodService::CLocodService(CLocodServicePlugin& aPlugin) : iPlugin(&aPlugin)+
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    {+
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    TRACE_FUNC_THIS+
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    }+
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    +
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// ---------------------------------------------------------------------------+
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// C++ 2nd phase construction+
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// ---------------------------------------------------------------------------+
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//+
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void CLocodService::ConstructL()+
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    {+
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    }+
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+
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// ---------------------------------------------------------------------------+
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// C++ default constructor+
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// ---------------------------------------------------------------------------+
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//+
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TLocodServiceRequest::TLocodServiceRequest(TLocodBearer aBearer, TBool aStatus)+
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:   iBearer(aBearer), iStatus(aStatus), iRequesting(EFalse)+
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    {+
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    }+
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+
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