mtpfws/mtpfw/dataproviders/dataproviderapi/src/cmtpdataproviderplugin.cpp
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     1 // Copyright (c) 2006-2009 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 #include <ecom/ecom.h>
       
    17 #include <mtp/cmtpdataproviderplugin.h>
       
    18 #include <mtp/mmtpdataproviderframework.h>
       
    19 
       
    20 /**
       
    21 MTP data provider plug-in factory method.
       
    22 @param aImplementationUid A UID specifying the required data provider 
       
    23 interface implementation.
       
    24 @param aParams An MTP framework specific parameter block pointer. This pointer
       
    25 should simply be passed through to this class's constructor by the derived 
       
    26 class.
       
    27 @return Pointer to the plug-in instance. Ownership IS transfered.
       
    28 @leave KErrNoMemory If the plug-in instance could not be allocated.
       
    29 @leave KErrArgument If an invalid aImplementationUid was specified.
       
    30 */
       
    31 EXPORT_C CMTPDataProviderPlugin* CMTPDataProviderPlugin::NewL(TUid aImplementationUid, TAny* aParams)
       
    32     {
       
    33     CMTPDataProviderPlugin* self = reinterpret_cast<CMTPDataProviderPlugin*>(
       
    34         REComSession::CreateImplementationL(
       
    35             aImplementationUid,
       
    36             _FOFF(CMTPDataProviderPlugin, iDtorIdKey), 
       
    37             aParams));
       
    38     return self;
       
    39     }
       
    40 
       
    41 /**
       
    42 Destructor.
       
    43 */
       
    44 EXPORT_C CMTPDataProviderPlugin::~CMTPDataProviderPlugin()
       
    45     {
       
    46 	REComSession::DestroyedImplementation(iDtorIdKey);
       
    47     }
       
    48 
       
    49 /**
       
    50 Constructor.
       
    51 @param aParams Parameter block pointer.
       
    52 @panic USER 0 If the parameter block pointer is 0.
       
    53 */
       
    54 EXPORT_C CMTPDataProviderPlugin::CMTPDataProviderPlugin(TAny* aParams) :
       
    55     iFramework(reinterpret_cast<MMTPDataProviderFramework*> (aParams))
       
    56     {
       
    57     __ASSERT_ALWAYS(iFramework, User::Invariant());
       
    58     }
       
    59 
       
    60 EXPORT_C MMTPDataProviderFramework& CMTPDataProviderPlugin::Framework() const
       
    61     {
       
    62     return *iFramework;
       
    63     }