mh5pushbutton.c

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/*******************************************************************************
 * Copyright © 2014 The DTVKit Open Software Foundation Ltd (www.dtvkit.org)
 * Copyright © 2004 Ocean Blue Software Ltd
 * Copyright © 2000 Koninklijke Philips Electronics N.V
 *
 * This file is part of a DTVKit Software Component
 * You are permitted to copy, modify or distribute this file subject to the terms
 * of the DTVKit 1.0 Licence which can be found in licence.txt or at www.dtvkit.org
 * 
 * THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
 * EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * If you or your organisation is not a member of DTVKit then you have access
 * to this source code outside of the terms of the licence agreement
 * and you are expected to delete this and any associated files immediately.
 * Further information on DTVKit, membership and terms can be found at www.dtvkit.org
 *******************************************************************************/
/*---includes for this file--------------------------------------------------*/
#include "mh5profile.h"
#include "mh5pushbutton.h"
#include "mh5application.h"
#include "mh5memory.h"          /*for constructor/destructor */
#include "mh5object.h"
#include "mh5display.h"         /* API to real display          */
#include "mh5variable.h"
#include <stdlib.h>
#include <string.h>

#ifndef MHEG5PROFILE_UK1_06

/*
   Debug
 */
#ifdef MH5PRINTOUT

void MHEG5pushbuttonPrint(MHEG5Pushbutton *pushbutton, char *out)
{
   MHEG5buttonPrint(&pushbutton->button, out);

   /* exchanged attributes */
   MHEG5indent(out);
   MHEG_PRINT(out, ":OriginalLabel ");
   MHEG5stringPrint(pushbutton->originalLabel, out);
   MHEG5newLine(out);

   MHEG5indent(out);
   MHEG_PRINT(out, ":CharacterSet ");
   MHEG5intPrint(pushbutton->characterSet, out);
   MHEG5newLine(out);
}

#endif


/*
     Constructor
 */

void MHEG5pushbuttonInit(MHEG5Pushbutton *pushbutton)
{
   assert(pushbutton);

   MHEG5buttonInit(&pushbutton->button);
}

void MHEG5pushbuttonFree(MHEG5Pushbutton *pushbutton)
{
   assert(pushbutton);

   MHEG5buttonFree(&pushbutton->button);

   MHEG5stringDestruct(&pushbutton->originalLabel);
}

/*
     Internal behaviours
 */
/*
     32.3 Internal behaviours
     this class has the same behaviours as its base class, with identical semantics.
 */
void MHEG5pushbuttonPrepare(MHEG5Pushbutton *pushbutton)
{
   assert(pushbutton);

   if (!(MHEG5Root *)pushbutton->availabilityStatus)
   {
      pushbutton->label = MHEG5stringCopy(pushbutton->originalLabel);
   }

   MHEG5buttonPrepare(&pushbutton->button);
}

void MHEG5pushbuttonActivate(MHEG5Pushbutton *pushbutton)
{
   assert(pushbutton);
   MHEG5buttonActivate(&pushbutton->button);
}

void MHEG5pushbuttonDeactivate(MHEG5Pushbutton *pushbutton)
{
   assert(pushbutton);
   MHEG5buttonDeactivate(&pushbutton->button);
}

void MHEG5pushbuttonDestruct(MHEG5Pushbutton *pushbutton)
{
   assert(pushbutton);

   MHEG5buttonDestruct(&pushbutton->button);

   MHEG5stringDestruct(&pushbutton->label);
}

MHEG5ErrorCode MHEG5setLabel(MHEG5Root *target, MHEG5GList *params)
{
   MHEG5String newLabel;
   MHEG5Pushbutton *pushbutton;
   MHEG5Bool invalidString;

   assert(target);

   if ((target->clazz != MHEG5PUSHBUTTON) &&
       (target->clazz != MHEG5SWITCHBUTTON))
   {
      return MHEG5ERR_WRONGTARGET;
   }
   if (!params)
   {
      return MHEG5ERR_WRONGNUMBEROFPARAMS;
   }

   MHEG5resolveGenericOctetString(params, &newLabel, &invalidString);
   if (invalidString)
   {
      /* Parameter was not an octet string */
      return MHEG5ERR_WRONGPARAM;
   }

   pushbutton = (MHEG5Pushbutton *)target;
   MHEG5stringDestruct(&pushbutton->label);

   pushbutton->label = MHEG5stringCopy(newLabel);

   MHEG5displayRedraw((MHEG5Visible *) target);

   return MHEG5ERR_NOERROR;
}

MHEG5ErrorCode MHEG5getLabel(MHEG5Root *target, MHEG5GList *params)
{
   MHEG5Root *var = 0;
   MHEG5Pushbutton *pushbutton;
   MHEG5OctetStringVariable *oc_var;

   assert(target);

   if ((target->clazz != MHEG5PUSHBUTTON) &&
       (target->clazz != MHEG5SWITCHBUTTON))
   {
      return MHEG5ERR_WRONGTARGET;
   }

   if (!params)
   {
      return MHEG5ERR_WRONGNUMBEROFPARAMS;
   }
   MHEG5resolveORef(params, &var);
   if (!var)
   {
      return MHEG5ERR_REFERENCEDPARAMNOTAVAILABLE;
   }
   if (var->clazz != MHEG5OCTETSTRINGVARIABLE)
   {
      return MHEG5ERR_WRONGPARAM;
   }

   oc_var = (MHEG5OctetStringVariable *)var;
   pushbutton = (MHEG5Pushbutton *)target;
   MHEG5stringDestruct(&oc_var->value);
   oc_var->value = MHEG5stringCopy(pushbutton->label);

   return MHEG5ERR_NOERROR;
}

#endif