/*

* Copyright (c) 2000 - 2001 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#include "nw_text_fixedwidthiteratori.h"

#include "NW_Text_FixedWidthI.h"

#include "BrsrStatusCodes.h"

/* ------------------------------------------------------------------------- *

   static data

 * ------------------------------------------------------------------------- */

/* ------------------------------------------------------------------------- */

const NW_Text_FixedWidthIterator_Class_t NW_Text_FixedWidthIterator_Class = {

  { /* NW_Object_Core             */

    /* super                      */ &NW_Text_Iterator_Class,

    /* querySecondary             */ _NW_Object_Core_QuerySecondary

  },

  { /* NW_Object_Base             */

    /* secondaryList              */ NULL

  },

  { /* NW_Object_Dynamic          */

    /* instanceSize               */ sizeof (NW_Text_FixedWidthIterator_t),

    /* construct                  */ _NW_Text_Iterator_Construct,

    /* destruct                   */ NULL

  },

  { /* NW_Text_Iterator           */

    /* getNext                    */ _NW_Text_FixedWidthIterator_GetNext,

    /* getOffset                  */ _NW_Text_FixedWidthIterator_GetOffset,

    /* setIndex                   */ _NW_Text_FixedWidthIterator_SetIndex

  },

  { /* NW_Text_FixedWidthIterator */

    /* unused                     */ NW_Object_Unused

  }

};

/* ------------------------------------------------------------------------- *

   NW_Text_Iterator methods

 * ------------------------------------------------------------------------- */

/* ------------------------------------------------------------------------- */

TBrowserStatusCode

_NW_Text_FixedWidthIterator_GetNext (NW_Text_Iterator_t* iterator,

                                     NW_Ucs4* character)

{

  /* parameter assertion block */

  NW_ASSERT (NW_Object_IsInstanceOf (iterator,

                                     &NW_Text_FixedWidthIterator_Class));

  NW_TRY (status) {

    /* ensure that there are more characters to get */

    status = NW_Text_Iterator_HasMore (iterator);

    if (status == KBrsrIterateDone) {

      NW_THROW (status);

    }

    NW_THROW_ON_ERROR (status);

    /* extract the character */

    *character = NW_Text_GetAt (iterator->text, iterator->index);

    iterator->index =

      (NW_Text_Length_t) (iterator->index + iterator->direction);

  }

  NW_CATCH (status) { /* empty */ }

  NW_FINALLY {

    return status;

  } NW_END_TRY

}

/* ------------------------------------------------------------------------- */

TBrowserStatusCode

_NW_Text_FixedWidthIterator_GetOffset (NW_Text_Iterator_t* iterator,

                                       NW_Uint32* offset)

{

  /* parameter assertion block */

  NW_ASSERT (NW_Object_IsInstanceOf (iterator,

                                     &NW_Text_FixedWidthIterator_Class));

  *offset =

    NW_Text_FixedWidth_GetCharacterSize (iterator->text) * iterator->index;

  return KBrsrSuccess;

}

/* ------------------------------------------------------------------------- */

TBrowserStatusCode

_NW_Text_FixedWidthIterator_SetIndex (NW_Text_Iterator_t* iterator,

                                      NW_Text_Length_t index)

{

  /* parameter assertion block */

  NW_ASSERT (NW_Object_IsInstanceOf (iterator,

                                     &NW_Text_FixedWidthIterator_Class));

  /* update the index */

  iterator->index = index;

  /* successful completion */

  return KBrsrSuccess;

}