1 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 

    17 

    18 // INCLUDE FILES

    19 #include <e32base.h>

    20 #include "EPos_CPositionerRegistry.h"

    21 #include "EPos_MPosStatusObserver.h"

    22 #include "EPos_CPosPsyExtension.h"

    23 

    24 // ================= MEMBER FUNCTIONS =======================

    25 

    26 // C++ default constructor

    27 CPositionerRegistry::CPositionerRegistry(

    28     MPosStatusObserver* aStatusObserver)

    29 :   iStatusObserver(aStatusObserver)

    30     {

    31     }

    32     

    33 // Destructor

    34 CPositionerRegistry::~CPositionerRegistry()

    35     {

    36     iPsyExtensions.ResetAndDestroy();

    37     }

    38 

    39 // Static Singleton constructor.

    40 CPositionerRegistry* CPositionerRegistry::InstanceL(

    41     MPosStatusObserver* aStatusObserver)

    42     {

    43     CPositionerRegistry* self;

    44     TAny* tlsptr = Dll::Tls();

    45 

    46 	if (tlsptr)

    47 		{

    48         // An instance already exists.

    49         self = reinterpret_cast<CPositionerRegistry*> (Dll::Tls());

    50 		}

    51     else

    52         {

    53         // Instance does not exist. Create one.

    54         self = new (ELeave) CPositionerRegistry(aStatusObserver);

    55 		Dll::SetTls(reinterpret_cast<TAny*> (self));

    56         }

    57 

    58 	self->iRefCount++;

    59 	return self;

    60     }

    61 

    62 // Singleton destructor

    63 void CPositionerRegistry::Release()

    64     {

    65 	if (--iRefCount == 0)

    66 		{

    67         Dll::SetTls(NULL);

    68 		delete this;

    69 		}

    70     }

    71 

    72 // ---------------------------------------------------------

    73 // CPositionerRegistry::RegisterPositionerL

    74 //

    75 // (other items were commented in a header).

    76 // ---------------------------------------------------------

    77 //

    78 CPosPsyExtension* CPositionerRegistry::RegisterPositionerL(TUid aImplementationUid)

    79     {

    80     TInt pos = Find(aImplementationUid);

    81     CPosPsyExtension* psyExtension = NULL;

    82     if (pos == KErrNotFound)

    83         {

    84         psyExtension = new (ELeave) CPosPsyExtension(

    85             aImplementationUid, iStatusObserver);

    86         CleanupStack::PushL(psyExtension);

    87         User::LeaveIfError(iPsyExtensions.Append(psyExtension));

    88         CleanupStack::Pop(psyExtension);

    89         }

    90     else

    91         {

    92         psyExtension = iPsyExtensions[pos];

    93         }

    94     psyExtension->RegisterPositioner();

    95     return psyExtension;

    96     }

    97 

    98 // ---------------------------------------------------------

    99 // CPositionerRegistry::DeregisterPositioner

   100 //

   101 // (other items were commented in a header).

   102 // ---------------------------------------------------------

   103 //

   104 void CPositionerRegistry::DeregisterPositioner(TUid aImplementationUid)

   105     {

   106     TInt pos = Find(aImplementationUid);

   107     if (pos != KErrNotFound)

   108         {

   109         CPosPsyExtension* psyExtension = iPsyExtensions[pos];

   110         if (psyExtension->UnregisterPositioner() == 0)

   111             {

   112             // There are no more positioners using this PSY

   113             delete psyExtension;

   114             iPsyExtensions.Remove(pos);

   115             }

   116         }

   117     }

   118 

   119 // ---------------------------------------------------------

   120 // CPositionerRegistry::Find

   121 //

   122 // (other items were commented in a header).

   123 // ---------------------------------------------------------

   124 //

   125 TInt CPositionerRegistry::Find(TUid aImplementationUid)

   126     {

   127     TInt count = iPsyExtensions.Count();

   128     for (TInt i = 0; i < count; i++)

   129         {

   130         if (iPsyExtensions[i]->iImplementationUid == aImplementationUid)

   131             {

   132             return i;

   133             }

   134         }

   135     return KErrNotFound;

   136     }

   137 

   138 //  End of File