/*

* Copyright (c) 2005 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:   XDM Engine document

*

*/

// INCLUDE FILES

#include <f32file.h>

#include "XdmEngine.h"

#include "XdmProtocol.h"

#include "XdmDocument.h"

#include "XdmOperation.h"

#include "XdmDocumentNode.h"

#include "XdmNodeAttribute.h"

#include "XdmOperationFactory.h"

// ----------------------------------------------------------

// CXdmDocument::CXdmDocument

// 

// ----------------------------------------------------------

//

EXPORT_C CXdmDocument::CXdmDocument( CXdmEngine& aXdmEngine ) :

                                     CActive( EPriorityStandard ),

                                     iDocSubset( EFalse ),

                                     iXdmEngine( aXdmEngine )

    {

    }

// ----------------------------------------------------------

// CXdmDocument::BaseConstructL( 16-bit )

// 

// ----------------------------------------------------------

//

EXPORT_C void CXdmDocument::BaseConstructL( TInt aOperationFactoryUid,

                                            const TDesC& aDocumentName )

    {

    delete iDocumentName;

    iDocumentName = NULL;

    iDocumentName = HBufC::NewL( aDocumentName.Length() );

    iDocumentName->Des().Copy( aDocumentName );

    iOperationFactory = CXdmOperationFactory::NewL( aOperationFactoryUid );

    }

// ----------------------------------------------------------

// CXdmDocument::BaseConstructL( 8-bit )

// 

// ----------------------------------------------------------

//

EXPORT_C void CXdmDocument::BaseConstructL( TInt aOperationFactoryUid,

                                            const TDesC8& aDocumentName )

    {

    delete iDocumentName;

    iDocumentName = NULL;

    iDocumentName = HBufC::NewL( aDocumentName.Length() );

    iDocumentName->Des().Copy( aDocumentName );

    iOperationFactory = CXdmOperationFactory::NewL( aOperationFactoryUid );

    }

// ----------------------------------------------------

// CXdmDocument::~CXdmDocument

// 

// ----------------------------------------------------

//

EXPORT_C CXdmDocument::~CXdmDocument()

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::~CXdmDocument()" ) );

    #endif

    delete iDocumentName;

    EmptyOperationQueue();

    iChangeRequests.Close();

    delete iOperationFactory;

    }

// ---------------------------------------------------------

// CXdmDocument::EmptyOperationQueue

// 

// ---------------------------------------------------------

//

void CXdmDocument::EmptyOperationQueue()

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::EmptyOperationQueue()" ) );

    #endif

    while (iChangeRequests.Count())

        {

        MXdmOperation* operation = iChangeRequests[0];

        iChangeRequests.Remove( 0 );    

        operation->Destroy();

        operation = NULL;

        }

    }

// ----------------------------------------------------

// CXdmDocument::FetchDataL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::FetchDataL( CXdmDocumentNode* aDocNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::FetchDataL()" ) );

    #endif

    MXdmOperation* operation = iOperationFactory->FetchL( *this, aDocNode );

    CleanupStack::PushL( operation );

    User::LeaveIfError( iChangeRequests.Append( operation ) );

    CleanupStack::Pop();  //operation

    }

// ----------------------------------------------------

// CXdmDocument::ReplaceL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::ReplaceL( CXdmDocumentNode* aOldNode,

                                      CXdmDocumentNode* aNewNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::ReplaceL()" ) );

    #endif

    if( aOldNode->Parent() == aNewNode->Parent() )

        {

        MXdmOperation* operation = iOperationFactory->ReplaceL(

                                    *this, aOldNode, aNewNode );

        CleanupStack::PushL( operation );

        User::LeaveIfError( iChangeRequests.Append( operation ) );

        CleanupStack::Pop();  //operation

        }

    else

        {

        #ifdef _DEBUG

            iXdmEngine.WriteToLog( _L8( "  Different parents, leaves!" ) );

        #endif

        User::Leave( KErrGeneral );

        }

    }

// ----------------------------------------------------

// CXdmDocument::ReplaceL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::ReplaceL()

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::ReplaceL()" ) );

    #endif

    MXdmOperation* operation = iOperationFactory->ReplaceL( *this, NULL, NULL ); 

    CleanupStack::PushL( operation );

    User::LeaveIfError( iChangeRequests.Append( operation ) );

    CleanupStack::Pop();  //operation

    }

// ----------------------------------------------------

// CXdmDocument::InsertL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::InsertL( CXdmDocumentNode* aDocNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::InsertL()" ) );

    #endif

    __ASSERT_DEBUG( aDocNode != NULL, User::Panic( _L( "CXcapDocument" ), EDocNodeNull ) );

    MXdmOperation* operation = iOperationFactory->InsertL(

                                *this, aDocNode );

    CleanupStack::PushL( operation );

    User::LeaveIfError( iChangeRequests.Append( operation ) );

    CleanupStack::Pop();  //operation

    }

// ----------------------------------------------------

// CXdmDocument::AppendL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::AppendL( CXdmDocumentNode* aDocNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::AppendL()" ) );

    #endif

    MXdmOperation* operation = 

        iOperationFactory->AppendL( *this, aDocNode );

    CleanupStack::PushL( operation );

    User::LeaveIfError( iChangeRequests.Append( operation ) );

    CleanupStack::Pop();  //operation

    }

// ----------------------------------------------------

// CXdmDocument::DeleteDataL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::DeleteDataL( CXdmDocumentNode* aDocNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::DeleteDataL()" ) );

    #endif

    MXdmOperation* operation = aDocNode == NULL ?

        iOperationFactory->DeletionL( *this, NULL ) :

        iOperationFactory->DeletionL( *this, aDocNode );

    CleanupStack::PushL( operation );

    User::LeaveIfError( iChangeRequests.Append( operation ) );

    CleanupStack::Pop();  //operation

    }

// ----------------------------------------------------

// CXdmDocument::Find

// 

// ----------------------------------------------------

//

EXPORT_C TInt CXdmDocument::Find( const CXdmDocumentNode& aTargetNode,

                                  RPointerArray<CXdmDocumentNode>& aResultArray ) const

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::Find()" ) );

    #endif

    TInt error = KErrNone;

    CXdmDocumentNode* root = DocumentRoot();

    __ASSERT_ALWAYS( root != NULL, User::Panic( _L( "CXcapDocument" ), EDocNodeNull ) );

    if( root->NodeName().Compare( aTargetNode.NodeName() ) == 0 )

        {

        TBool found = EFalse;

        TInt attrCount = root->AttributeCount();

        TInt attrCount2 = aTargetNode.AttributeCount();

        if( attrCount > 0 && attrCount == attrCount2 )

            {

            SXdmAttribute16 attribute;

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

                {

                attribute.iName.Set( aTargetNode.Attribute( i )->NodeName() );

                attribute.iValue.Set( aTargetNode.Attribute( i )->AttributeValue() );

                found = root->HasAttribute( attribute );

                }

            }

        error = found ? aResultArray.Append( root ) : KErrNotFound;

        }

    else

        {

        #ifdef _DEBUG

            iXdmEngine.WriteToLog( _L8( " Root does not match, search child nodes" ) );

        #endif

        error = root->Find( aTargetNode, aResultArray ); 

        }

    TInt count = aResultArray.Count();

    return error == KErrNone && count > 0 ? count : KErrNotFound;

    }

// ----------------------------------------------------

// CXdmDocument::Find

// 

// ----------------------------------------------------

//

EXPORT_C TInt CXdmDocument::Find( const TDesC& aNodeName,

                                  RPointerArray<CXdmDocumentNode>& aResultArray,

                                  const RPointerArray<SXdmAttribute16>& aAttributeArray ) const

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::Find()" ) );

    #endif

    TInt error = KErrNone;

    CXdmDocumentNode* root = DocumentRoot();

    __ASSERT_ALWAYS( root != NULL, User::Panic( _L( "CXcapDocument" ), EDocNodeNull ) );

    if( root->NodeName().Compare( aNodeName ) == 0 )

        {

        TBool found = EFalse;

        TInt attrCount = root->AttributeCount();

        if( attrCount > 0 )

            {

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

                found = root->HasAttribute( *aAttributeArray[i] );

            }

        error = found ? aResultArray.Append( root ) : KErrNotFound;

        }

    else

        {

        #ifdef _DEBUG

            iXdmEngine.WriteToLog( _L8( " Root does not match, search child nodes" ) );

        #endif

        error = root->Find( aNodeName, aResultArray, aAttributeArray ); 

        }

    TInt count = aResultArray.Count();

    return error == KErrNone && count > 0 ? count : KErrNotFound;

    }

// ----------------------------------------------------

// CXdmDocument::Find

// 

// ----------------------------------------------------

//

EXPORT_C TInt CXdmDocument::Find( const TDesC& aNodeName,

                                  RPointerArray<CXdmDocumentNode>& aResultArray ) const

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::Find()" ) );

    #endif

    TInt error = KErrNone;

    CXdmDocumentNode* root = DocumentRoot();

    __ASSERT_ALWAYS( root != NULL, User::Panic( _L( "CXcapDocument" ), EDocNodeNull ) );

    if( root->NodeName().Compare( aNodeName ) == 0 )

        error = aResultArray.Append( root );

    else

        {

        #ifdef _DEBUG

            iXdmEngine.WriteToLog( _L8( " Root does not match, search child nodes" ) );

        #endif

        error = root->Find( aNodeName, aResultArray ); 

        }

    TInt count = aResultArray.Count();

    return error == KErrNone && count > 0 ? count : KErrNotFound;                            

    }

// ----------------------------------------------------

// CXcapDocument::operator==

// 

// ----------------------------------------------------

//

EXPORT_C TBool CXdmDocument::operator==( CXdmDocument& aDocument ) const

    {

    CXdmDocumentNode* root1 = DocumentRoot();

    CXdmDocumentNode* root2 = aDocument.DocumentRoot();

    __ASSERT_ALWAYS( root1 != NULL, User::Panic( _L( "CXcapDocument" ), EDocNodeNull ) );

    __ASSERT_ALWAYS( root2 != NULL, User::Panic( _L( "CXcapDocument" ), EDocNodeNull ) );

    return Name().Compare( aDocument.Name() ) == 0 ? *root1 == *root2 : EFalse;

    }

// ----------------------------------------------------

// CXdmDocument::Name

// 

// ----------------------------------------------------

//

EXPORT_C TPtrC CXdmDocument::Name() const

    {

    return iDocumentName != NULL ? iDocumentName->Des() : TPtrC();

    }

// ----------------------------------------------------

// CXdmDocument::Find

// 

// ----------------------------------------------------

//

EXPORT_C TInt CXdmDocument::Find( const TDesC& aAttributeName,

                                  RPointerArray<CXdmNodeAttribute>& aResultArray ) const

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::Find()" ) );

    #endif

    TInt error = KErrNone;

    CXdmDocumentNode* root = DocumentRoot();

    __ASSERT_ALWAYS( root != NULL, User::Panic( _L( "CXdmDocument" ), EDocNodeNull ) );

    error = DoFindAttributes( root, aAttributeName, aResultArray ); 

    TInt count = aResultArray.Count();

    return error == KErrNone && count > 0 ? count : KErrNotFound;                

    }

// ----------------------------------------------------

// CXdmDocument::RemoveFromModelL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::RemoveFromModelL( CXdmDocumentNode* aChileNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::RemoveFromModel()" ) );

    #endif

    if( !iDocSubset )

        {       

        CXdmDocumentNode* parent = aChileNode->Parent();

        parent != NULL ? parent->RemoveChileNodeL( aChileNode ) : User::Leave( KErrArgument);

        }

    else User::Leave( KErrGeneral );

    }

// ----------------------------------------------------

// CXdmDocument::ResetSubset

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::ResetSubset()

    {

    iDocSubset = EFalse;

    }

// ----------------------------------------------------

// CXdmDocument::AppendToModelL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::AppendToModelL( CXdmDocumentNode* aNewNode,

                                            CXdmDocumentNode* aParentNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::AppendToModelL()" ) );

    #endif

    if( !iDocSubset )

        {

        if( aNewNode != NULL && aParentNode != NULL )

            aParentNode->AppendChileNodeL( aNewNode );

        }

    else User::Leave( KErrGeneral );

    }

// ----------------------------------------------------

// CXdmDocument::ReplaceInModelL

// 

// ----------------------------------------------------

//

EXPORT_C void CXdmDocument::ReplaceInModelL( CXdmDocumentNode* aNewNode,

                                             CXdmDocumentNode* aTargetNode )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::ReplaceInModelL()" ) );

    #endif

    if( !iDocSubset )

        {

        CXdmDocumentNode* parent = aTargetNode->Parent();

        parent != NULL ? parent->ReplaceChileNodeL( aNewNode, aTargetNode ) : User::Leave( KErrArgument);                                    

        }

    else User::Leave( KErrGeneral );

    }

// ----------------------------------------------------

// CXdmDocument::DocumentSubsetL

// 

// ----------------------------------------------------

//

EXPORT_C CXdmDocumentNode* CXdmDocument::DocumentSubsetL( const TDesC& aNodePath )

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::DocumentSubsetL()" ) );

    #endif

    TBool ready = EFalse;

    HBufC* temp = HBufC::NewLC( aNodePath.Length() );

    temp->Des().Copy( aNodePath );

    TPtr nodePath( temp->Des() );

    while( !ready && nodePath.Length() != 0 )

        {

        TPtrC part;

        TInt index = nodePath.LocateF( KXdmPathSeparatorChar );

        if( index > 0 )

            part.Set( nodePath.Left( index ) );

        else

            {

            part.Set( nodePath );

            ready = ETrue;

            }

        AppendPathPartL( part );

        nodePath.Delete( 0, index + 1 );

        }

    iDocSubset = ETrue;

    CleanupStack::PopAndDestroy();  //temp

    return CurrentExtent();

    }

// ----------------------------------------------------

// CXdmDocument::DoFindAttributes

// 

// ----------------------------------------------------

//

TInt CXdmDocument::DoFindAttributes( CXdmDocumentNode* aNode,

								     const TDesC& aAttributeName,

                                     RPointerArray<CXdmNodeAttribute>& aResultArray ) const

    {

    #ifdef _DEBUG

        iXdmEngine.WriteToLog( _L8( "CXdmDocument::DoFindAttributes()" ) );

    #endif

    TInt error = KErrNone;

	CXdmDocumentNode* node = aNode;

	TInt attrCount = aNode->AttributeCount();

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

        {

		CXdmNodeAttribute* attr = node->Attribute( i );

	   	if( !attr->NodeName().CompareF( aAttributeName ) )

    	   	error = aResultArray.Append( attr );

	   	}

	TInt nodeCount = node->NodeCount();

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

		{

		CXdmDocumentNode* child = node->ChileNode( i );

	   	DoFindAttributes ( child, aAttributeName, aResultArray );

		}  

    TInt count = aResultArray.Count();

    return error == KErrNone && count > 0 ? count : KErrNotFound;            

    }