1 /*

     2 * Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Transaction base class

    15 *

    16 */

    17 

    18 

    19 #include    "transaction.h"

    20 #include    "transactionelement.h"

    21 #include    "transactionfactory.h"

    22 #include    "xmluicontrollerpanic.h"

    23 

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

    25 

    26 using namespace AiXmlUiController;

    27 

    28 CTransaction::CTransaction()

    29     : iTransactionElements(CTransactionElement::LinkOffset())

    30     {

    31     }

    32 

    33 CTransaction* CTransaction::NewL()

    34     {

    35     CTransaction* self = new( ELeave ) CTransaction;

    36     

    37     return self;

    38     }

    39     

    40 CTransaction::~CTransaction()

    41     {

    42     __ASSERT_DEBUG( iTransactionElements.IsEmpty(), Panic( ETransactionElementListNotEmpty ) );

    43     }

    44 

    45 TInt CTransaction::Id() const

    46     {

    47     return iTxId;

    48     }

    49     

    50 void CTransaction::Initialize(TInt aTxId)

    51     {

    52     iTxId = aTxId;

    53     }

    54     

    55 void CTransaction::Append(MTransactionElement& aElement )

    56     {

    57     iTransactionElements.AddLast(dynamic_cast<CTransactionElement&>(aElement));

    58     }

    59     

    60 void CTransaction::CommitL( TBool& aLayoutChanged, RPropertyHashMap& aPropertyHashMap )

    61     {

    62     aLayoutChanged = EFalse;

    63         

    64     if ( iTransactionElements.IsEmpty() )

    65         {

    66         // Nothing to do

    67         return;

    68         }

    69     

    70     // Initialize iterator

    71     TDblQueIter<CTransactionElement> iter( iTransactionElements );

    72     iter.SetToFirst();

    73 

    74     // Commit transaction elements    

    75     while ( iter )

    76         {

    77         // Commit element and advance iterator 

    78         (iter++)->CommitL( aLayoutChanged, aPropertyHashMap );

    79         }

    80     }

    81 

    82 void CTransaction::Reset(MTransactionFactory& aFactory)

    83     {

    84     Deque();

    85     iTxId = 0;

    86     

    87     TDblQueIter<CTransactionElement> iter( iTransactionElements );

    88     iter.SetToFirst();

    89     

    90     while ( iter )

    91         {

    92         CTransactionElement* element = iter++;

    93         aFactory.ReleaseTransactionElement( element );

    94         }

    95         

    96     __ASSERT_DEBUG( iTransactionElements.IsEmpty(), Panic( ETransactionElementListNotEmpty ) );

    97     }

    98 

    99 TDblQueIter<CTransactionElement> CTransaction::ElementIter()

   100     {

   101     TDblQueIter<CTransactionElement> iter( iTransactionElements );

   102     iter.SetToFirst();

   103     return iter;

   104     }

   105 

   106 void CTransaction::Deque()

   107     {

   108     iLink.Deque();

   109     }

   110 

   111 //  End of File