/*

* 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_adt_broadcasteri.h"

#include "nw_adt_resizablevector.h"

#include "BrsrStatusCodes.h"

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

   public consts

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

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

   internal methods

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

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

   static data

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

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

const

NW_ADT_Broadcaster_Class_t NW_ADT_Broadcaster_Class = {

  { /* NW_Object_Core          */

    /* super                   */ &NW_Object_Dynamic_Class,

    /* queryInterface          */ _NW_Object_Base_QueryInterface

  },

  { /* NW_Object_Base          */

    /* interfaceList           */ NULL

  },

  { /* NW_Object_Dynamic       */

    /* instanceSize            */ sizeof (NW_ADT_Broadcaster_t),

    /* construct               */ _NW_ADT_Broadcaster_Construct,

    /* destruct                */ _NW_ADT_Broadcaster_Destruct

  },

  { /* NW_ADT_Broadcaster      */

    /* addListener             */ _NW_ADT_Broadcaster_AddListener,

    /* removeListener          */ _NW_ADT_Broadcaster_RemoveListener,

  }

};

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

   virtual methods

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

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

TBrowserStatusCode

_NW_ADT_Broadcaster_Construct (NW_Object_Dynamic_t* dynamicObject,

                               va_list* argp)

{

  NW_ADT_Broadcaster_t* thisObj;

  TBrowserStatusCode status = KBrsrSuccess;

  /* avoid 'unreferenced formal parameter' warnings */

  NW_REQUIRED_PARAM (argp);

  /* parameter assertions */

  NW_ASSERT (dynamicObject != NULL);

  NW_ASSERT (NW_Object_IsInstanceOf (dynamicObject, &NW_ADT_Broadcaster_Class));

  /* for convenience */

  thisObj = NW_ADT_BroadcasterOf (dynamicObject);

  /* create the variable list */

  thisObj->listeners = (NW_ADT_DynamicVector_t *) (NW_ADT_ResizableVector_New (

      sizeof (NW_Object_Core_t*), 1, 1));

  if (!thisObj->listeners) {

    status = KBrsrOutOfMemory;

  }

  /* successful completion */

  return status;

}

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

void

_NW_ADT_Broadcaster_Destruct (NW_Object_Dynamic_t* dynamicObject)

{

  NW_ADT_Broadcaster_t* thisObj;

  /* parameter assertions */

  NW_ASSERT (dynamicObject != NULL);

  NW_ASSERT (NW_Object_IsInstanceOf (dynamicObject, &NW_ADT_Broadcaster_Class));

  /* for convenience */

  thisObj = NW_ADT_BroadcasterOf (dynamicObject);

  /* deallocate our dynamic data */

  NW_Object_Delete (thisObj->listeners);

}

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

TBrowserStatusCode

_NW_ADT_Broadcaster_AddListener (NW_ADT_Broadcaster_t* thisObj,

                                 const NW_Object_t* listener)

{

  void** temp;

  /* parameter assertions */

  NW_ASSERT (thisObj != NULL);

  NW_ASSERT (NW_Object_IsInstanceOf (thisObj, &NW_ADT_Broadcaster_Class));

  /* add the listener */

  temp = NW_ADT_DynamicVector_InsertAt (thisObj->listeners, 

      (void *) &listener, NW_ADT_Vector_AtEnd);

  return (temp != NULL) ? KBrsrSuccess: KBrsrFailure;

}

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

TBrowserStatusCode

_NW_ADT_Broadcaster_RemoveListener (NW_ADT_Broadcaster_t* thisObj,

                                    const NW_Object_t* listener)

{

  TBrowserStatusCode status;

  /* parameter assertions */

  NW_ASSERT (thisObj != NULL);

  NW_ASSERT (NW_Object_IsInstanceOf (thisObj, &NW_ADT_Broadcaster_Class));

  /* add the listener */

  status = _NW_ADT_DynamicVector_RemoveElement (thisObj->listeners, 

      (void *) &listener);

  return status;

}

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

   final functions

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

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

   convenience functions

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

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

NW_ADT_Broadcaster_t*

NW_ADT_Broadcaster_New (void)

{

  return (NW_ADT_Broadcaster_t*) NW_Object_New (&NW_ADT_Broadcaster_Class);

}