/*

* Copyright (c) 2006-2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   Contains CNcdNodeDependencyProxy class implementation

*

*/

#include "ncdnodedependencyproxy.h"

#include "ncdnodemetadataproxy.h"

#include "ncdnodemanagerproxy.h"

#include "ncdnodeproxy.h"

#include "ncdnodedependencyinfoimpl.h"

#include "ncddependencyinfo.h"

#include "ncdoperationimpl.h"

#include "ncddownloadoperationproxy.h"

#include "ncdnodemanagerproxy.h"

#include "catalogsclientserver.h"

#include "ncdnodeidentifier.h"

#include "ncdnodefunctionids.h"

#include "ncdnodeclassids.h"

#include "catalogsinterfaceidentifier.h"

#include "ncdnodeidentifier.h"

#include "catalogsutils.h"

#include "catalogsdebug.h"

#include "ncderrors.h"

// ======== PUBLIC MEMBER FUNCTIONS ========

CNcdNodeDependencyProxy::CNcdNodeDependencyProxy(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CNcdNodeMetadataProxy& aMetadata )

: CNcdInterfaceBaseProxy( aSession, aHandle, &aMetadata ),

  iNodeManager( aMetadata.Node().NodeManager() )

    {

    }

void CNcdNodeDependencyProxy::ConstructL()

    {

    // Register the interface

    MNcdNodeDependency* interface( this );

    AddInterfaceL( 

        CCatalogsInterfaceIdentifier::NewL( interface, this, MNcdNodeDependency::KInterfaceUid ) );

    // Let the construction leave if we do not get the data from the server.    

    InternalizeL();

    }

CNcdNodeDependencyProxy* CNcdNodeDependencyProxy::NewL(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CNcdNodeMetadataProxy& aMetadata )

    {

    CNcdNodeDependencyProxy* self = 

        CNcdNodeDependencyProxy::NewLC( aSession, aHandle, aMetadata );

    CleanupStack::Pop( self );

    return self;

    }

CNcdNodeDependencyProxy* CNcdNodeDependencyProxy::NewLC(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CNcdNodeMetadataProxy& aMetadata )

    {

    CNcdNodeDependencyProxy* self = 

        new( ELeave ) CNcdNodeDependencyProxy( aSession, aHandle, aMetadata );

    // Using PushL because the object does not have any references yet

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

CNcdNodeDependencyProxy::~CNcdNodeDependencyProxy()

    {

    // Remove interfaces implemented by this class from the interface list.

    // So, the interface list is up to date when this class object is deleted.

    RemoveInterface( MNcdNodeDependency::KInterfaceUid );

    // Delete member variables here

    // Do not delete manager because

    // this object does not own it.

    // Casting is safe here because only this class creates the objects

    // that are inserted into the array.

    ResetAndDestroyWithCast<CNcdNodeDependencyInfo>( iDependencyTargets );

    }

CNcdNodeManagerProxy& CNcdNodeDependencyProxy::NodeManager() const

    {

    return iNodeManager;

    }

void CNcdNodeDependencyProxy::InternalizeL()

    {

    DLTRACEIN((""));

    HBufC8* data( NULL );

    // Because we do not know the exact size of the data, use

    // the alloc method, which creates the buffer of the right size

    // and sets the pointer to point to the created buffer.

    // Get all the data that is necessary to internalize this object

    // from the server side.

    TInt error(

        ClientServerSession().

        SendSyncAlloc( NcdNodeFunctionIds::ENcdInternalize,

                       KNullDesC8,

                       data,

                       Handle(),

                       0 ) );

    if ( error == KNcdErrorObsolete )

        {

        DLINFO(("Dependency was obsolete"));

        // Remove interfaces implemented by this class from the top parent interface list.

        // So, the interface list is up to date after this object is removed

        // from its top parent.

        RemoveInterface( MNcdNodeDependency::KInterfaceUid );

        // Remove from the parent

        RemoveFromParent();

        // Now update the interface for this object just in case somebody needs it.

        // Register the interface

        MNcdNodeDependency* interface( this );

        AddInterfaceL( 

            CCatalogsInterfaceIdentifier::NewL( interface, this, MNcdNodeDependency::KInterfaceUid ) );

        }

    // If error occurred during data transfer, leave here and forward the error.

    User::LeaveIfError( error );

    if ( data == NULL )

        {

        DLERROR((""));

        User::Leave(  KErrNotFound );

        }

     CleanupStack::PushL( data );

     // Read the data from the stream and insert it to the memeber variables

     RDesReadStream stream( *data );

     CleanupClosePushL( stream );

     InternalizeDataL( stream );

     // Closes the stream

     CleanupStack::PopAndDestroy( &stream ); 

     CleanupStack::PopAndDestroy( data );

    DLTRACEOUT((""));    

    }

// MNcdNodeDependency functions

const RPointerArray<MNcdNodeDependencyInfo>& CNcdNodeDependencyProxy::DependencyInfos() const

    {

    DLTRACEIN((""));

    return iDependencyTargets;

    }

TNcdDependencyState CNcdNodeDependencyProxy::State() const

    {

    DLTRACEIN((""));

    TNcdDependencyState totalState = ENcdDependencyInstalled;

    for ( TInt i = 0; i < iDependencyTargets.Count(); ++i ) 

        {

        if ( iDependencyTargets[i]->State() < totalState ) 

            {

            DLTRACE(("Downgrading state from %d to %d", 

                totalState, iDependencyTargets[i]->State() ));

            totalState = iDependencyTargets[i]->State();                        

            }

        }

    DLTRACEOUT(("Total state: %d", totalState ));

    return totalState;

    }

// Other functions

void CNcdNodeDependencyProxy::InternalizeDataL( RReadStream& aStream )

    {

    DLTRACEIN((""));

    // Use catalogsutils.h functions to internalize

    // memebervariables according to the data received

    // from the server.

    // Make sure that the variables are set here in the same

    // order as they are externalized in the server side.

    // Small mistake here messes up everything!

    // First read the class id. Because, it is the first thing in the stream.

    TInt classId( aStream.ReadInt32L() );

    if ( classId != NcdNodeClassIds::ENcdNodeDependencyClassId )

        {

        // classId is not recognized

        DLERROR(("Class id was not recognized!"));

        // For testing purposes assert here

        DASSERT( EFalse );

        // Otherwise leave is adequate

        User::Leave( KErrCorrupt );

        }

    InternalizeDependencyArrayL( aStream );

    DLTRACEOUT((""));

    }

void CNcdNodeDependencyProxy::InternalizeDependencyArrayL( RReadStream& aStream )

    {

    DLTRACEIN((""));

    // Casting is safe here because only this class creates the objects

    // that are inserted into the array.

    ResetAndDestroyWithCast<CNcdNodeDependencyInfo>( iDependencyTargets );

    // First get the node dependency information that is sent from the server

    // and then convert it to the proxy side dependency information object

    // that is inserted into the array.

    TInt count( aStream.ReadInt32L() );

    CNcdDependencyInfo* dependencyInfo( NULL );

    CNcdNodeDependencyInfo* info( NULL );

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

        {

        dependencyInfo = CNcdDependencyInfo::NewLC( aStream );

        info = CNcdNodeDependencyInfo::NewLC( *dependencyInfo, NodeManager() );

        iDependencyTargets.AppendL( info );

        // Ownership was transferred to the array

        CleanupStack::Pop( info );

        CleanupStack::PopAndDestroy( dependencyInfo );

        }

    // Second get the content dependency information

    count = aStream.ReadInt32L();

    dependencyInfo = NULL;

    info = NULL;

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

        {

        dependencyInfo = CNcdDependencyInfo::NewLC( aStream );

        info = CNcdNodeDependencyInfo::NewLC( *dependencyInfo, NodeManager() );

        iDependencyTargets.AppendL( info );

        CleanupStack::Pop( info );

        CleanupStack::PopAndDestroy( dependencyInfo );

        }

    DLTRACEOUT((""));

    }