upnpmediaserver/avobjects/src/upnpcontainer.cpp
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/** @file
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* Copyright (c) 2005-2006 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:  UPnP container class implementation
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*
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*/
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// INCLUDE FILES
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#include    <upnpstring.h>
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#include    <e32base.h>
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#include    "upnpcontainer.h"
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#include    "upnpitem.h"
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#include    "upnpobjectlist.h"
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CUpnpContainer::CUpnpContainer
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CUpnpContainer::CUpnpContainer()
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    {
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CUpnpContainer::ConstructL(  )
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    {
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    CUpnpObject::ConstructL(  );
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    iObjects = CUpnpObjectList::NewL();
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CUpnpContainer* CUpnpContainer::NewL()
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    {
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    CUpnpContainer* self = new( ELeave ) CUpnpContainer;
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    CleanupStack::PushL( self );
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    self->ConstructL( );
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    CleanupStack::Pop();
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    return self;
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    }
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// Destructor
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CUpnpContainer::~CUpnpContainer()
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    {
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    delete iObjects;
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::AppendObjectL
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// Appends object to internal array.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CUpnpContainer::AppendObjectL( CUpnpObject& aNewObject )
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    {
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    // Set the parent Id to this container 
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    aNewObject.SetParentIdL( Id() );
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    iObjects->AppendObjectL( aNewObject );
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::RemoveObjectL
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// Removes object from internal array according to ID.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CUpnpContainer::RemoveObjectL( const TDesC8& aObjectId )
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    {
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    iObjects->RemoveAndDestroy(aObjectId);
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::FindObject
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// Finds object from internal array according to id. Is recursive, so goes down
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// the object tree.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CUpnpObject* CUpnpContainer::FindObject( const TDesC8& aObjectId )
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    {
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    CUpnpObject* ret = NULL;
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    if ( Id() == aObjectId )
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        {
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        ret = this;
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        }
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    else
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        {
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        for (TInt i = 0; i < iObjects->ObjectCount(); i++ )
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            {
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            if ( (*iObjects)[i]->ObjectType() == EUPnPContainer )
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                {
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                // Containers can contain more stuff --> recursive action needed.
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                CUpnpObject* tmp = (static_cast<CUpnpContainer*>((*iObjects)[i]))
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                                    ->FindObject( aObjectId );
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                if ( tmp )
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                    {
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                    ret = tmp;
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                    break;
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                    }
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                }
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            else
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                {
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                // Need to check items
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                if ( (*iObjects)[i]->Id() == aObjectId )
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                    {
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                    ret = (*iObjects)[i];
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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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    return ret;
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::ObjectCount
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// Counts objects (including containers) from the object tree (recursive / not 
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// recursive)
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C TInt CUpnpContainer::ObjectCount()
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    {
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    return iObjects->ObjectCount();
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::ExternalizeL
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// Writes the content to stream.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CUpnpContainer::ExternalizeL( RWriteStream& aStream ) const
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    {
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    BaseExternalizeL( aStream );
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::InternalizeL
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// Fills container information from stream
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//	
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EXPORT_C void CUpnpContainer::InternalizeL( RReadStream& aStream )
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    {
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    BaseInternalizeL( aStream );
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::ObjectType
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// Returns item-type
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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TUPnPObjectType CUpnpContainer::ObjectType() const
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    {
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    return EUPnPContainer;
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    }
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// -----------------------------------------------------------------------------
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// CUpnpContainer::ObjectType
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CUpnpObject* CUpnpContainer::operator[](TInt aIndex)
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    {
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    return (*iObjects)[aIndex];
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    }
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//  End of File