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Kitware
GitHub Repository: Kitware/CMake
 Path: blob/master/Source/CursesDialog/form/fld_current.c
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/****************************************************************************

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 * Copyright (c) 1998 Free Software Foundation, Inc.                        *

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 *                                                                          *

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 * Permission is hereby granted, free of charge, to any person obtaining a  *

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 * copy of this software and associated documentation files (the            *

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 * "Software"), to deal in the Software without restriction, including      *

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 * without limitation the rights to use, copy, modify, merge, publish,      *

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 * distribute, distribute with modifications, sublicense, and/or sell       *

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 * copies of the Software, and to permit persons to whom the Software is    *

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 * furnished to do so, subject to the following conditions:                 *

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 *                                                                          *

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 * The above copyright notice and this permission notice shall be included  *

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 * in all copies or substantial portions of the Software.                   *

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 *                                                                          *

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *

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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *

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 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *

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 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *

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 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *

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 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *

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 *                                                                          *

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 * Except as contained in this notice, the name(s) of the above copyright   *

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 * holders shall not be used in advertising or otherwise to promote the     *

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 * sale, use or other dealings in this Software without prior written       *

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 * authorization.                                                           *

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 ****************************************************************************/

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/****************************************************************************

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 *   Author: Juergen Pfeifer <[email protected]> 1995,1997            *

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 ****************************************************************************/

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#include "form.priv.h"

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MODULE_ID("$Id$")

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

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|   Facility      :  libnform  

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|   Function      :  int set_current_field(FORM  * form,FIELD * field)

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|   

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|   Description   :  Set the current field of the form to the specified one.

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|

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|   Return Values :  E_OK              - success

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|                    E_BAD_ARGUMENT    - invalid form or field pointer

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|                    E_REQUEST_DENIED  - field not selectable

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|                    E_BAD_STATE       - called from a hook routine

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|                    E_INVALID_FIELD   - current field can't be left

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|                    E_SYSTEM_ERROR    - system error

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+--------------------------------------------------------------------------*/

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int set_current_field(FORM  * form, FIELD * field)

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{

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  int err = E_OK;

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  if ( !form || !field )

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    RETURN(E_BAD_ARGUMENT);

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  if ( (form != field->form) || Field_Is_Not_Selectable(field) )

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    RETURN(E_REQUEST_DENIED);

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  if (!(form->status & _POSTED))

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    {

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      form->current = field;

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      form->curpage = field->page;

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  }

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  else

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    {

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      if (form->status & _IN_DRIVER) 

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	err = E_BAD_STATE;

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      else

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	{

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	  if (form->current != field)

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	    {

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	      if (!_nc_Internal_Validation(form)) 

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	       err = E_INVALID_FIELD;

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	      else

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		{

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		  Call_Hook(form,fieldterm);

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		  if (field->page != form->curpage)

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		    {

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		      Call_Hook(form,formterm);

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		      err = _nc_Set_Form_Page(form,field->page,field);

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		      Call_Hook(form,forminit);

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		    } 

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		  else 

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		    {

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		      err = _nc_Set_Current_Field(form,field);

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		    }

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		  Call_Hook(form,fieldinit);

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		  _nc_Refresh_Current_Field(form);

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		}

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	    }

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	}

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    }

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  RETURN(err);

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}

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

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|   Facility      :  libnform  

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|   Function      :  FIELD *current_field(const FORM * form)

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|   

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|   Description   :  Return the current field.

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|

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|   Return Values :  Pointer to the current field.

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+--------------------------------------------------------------------------*/

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FIELD *current_field(const FORM * form)

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{

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  return Normalize_Form(form)->current;

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}

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

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|   Facility      :  libnform  

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|   Function      :  int field_index(const FIELD * field)

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|   

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|   Description   :  Return the index of the field in the field-array of

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|                    the form.

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|

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|   Return Values :  >= 0   : field index

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|                    -1     : fieldpointer invalid or field not connected

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+--------------------------------------------------------------------------*/

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int field_index(const FIELD * field)

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{

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  return ( (field && field->form) ? field->index : -1 );

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}

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/* fld_current.c ends here */

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