450 lines
14 KiB
C
450 lines
14 KiB
C
/****************************************************************************
|
|
* Copyright 2020 Thomas E. Dickey *
|
|
* Copyright 1998-2010,2012 Free Software Foundation, Inc. *
|
|
* *
|
|
* Permission is hereby granted, free of charge, to any person obtaining a *
|
|
* copy of this software and associated documentation files (the *
|
|
* "Software"), to deal in the Software without restriction, including *
|
|
* without limitation the rights to use, copy, modify, merge, publish, *
|
|
* distribute, distribute with modifications, sublicense, and/or sell *
|
|
* copies of the Software, and to permit persons to whom the Software is *
|
|
* furnished to do so, subject to the following conditions: *
|
|
* *
|
|
* The above copyright notice and this permission notice shall be included *
|
|
* in all copies or substantial portions of the Software. *
|
|
* *
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
|
|
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
|
|
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
|
|
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
|
|
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
|
|
* *
|
|
* Except as contained in this notice, the name(s) of the above copyright *
|
|
* holders shall not be used in advertising or otherwise to promote the *
|
|
* sale, use or other dealings in this Software without prior written *
|
|
* authorization. *
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Author: Juergen Pfeifer, 1995,1997 *
|
|
****************************************************************************/
|
|
|
|
#include "form.priv.h"
|
|
|
|
MODULE_ID("$Id: frm_def.c,v 1.29 2020/12/11 23:47:16 tom Exp $")
|
|
|
|
/* this can't be readonly */
|
|
static FORM default_form =
|
|
{
|
|
0, /* status */
|
|
0, /* rows */
|
|
0, /* cols */
|
|
0, /* currow */
|
|
0, /* curcol */
|
|
0, /* toprow */
|
|
0, /* begincol */
|
|
-1, /* maxfield */
|
|
-1, /* maxpage */
|
|
-1, /* curpage */
|
|
ALL_FORM_OPTS, /* opts */
|
|
(WINDOW *)0, /* win */
|
|
(WINDOW *)0, /* sub */
|
|
(WINDOW *)0, /* w */
|
|
(FIELD **)0, /* field */
|
|
(FIELD *)0, /* current */
|
|
(_PAGE *) 0, /* page */
|
|
(char *)0, /* usrptr */
|
|
NULL, /* forminit */
|
|
NULL, /* formterm */
|
|
NULL, /* fieldinit */
|
|
NULL /* fieldterm */
|
|
};
|
|
|
|
FORM_EXPORT_VAR(FORM *) _nc_Default_Form = &default_form;
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : static FIELD *Insert_Field_By_Position(
|
|
| FIELD *new_field,
|
|
| FIELD *head )
|
|
|
|
|
| Description : Insert new_field into sorted fieldlist with head "head"
|
|
| and return new head of sorted fieldlist. Sorting
|
|
| criteria is (row,column). This is a circular list.
|
|
|
|
|
| Return Values : New head of sorted fieldlist
|
|
+--------------------------------------------------------------------------*/
|
|
static FIELD *
|
|
Insert_Field_By_Position(FIELD *newfield, FIELD *head)
|
|
{
|
|
FIELD *current, *newhead;
|
|
|
|
assert(newfield);
|
|
|
|
if (!head)
|
|
{ /* empty list is trivial */
|
|
newhead = newfield->snext = newfield->sprev = newfield;
|
|
}
|
|
else
|
|
{
|
|
newhead = current = head;
|
|
while ((current->frow < newfield->frow) ||
|
|
((current->frow == newfield->frow) &&
|
|
(current->fcol < newfield->fcol)))
|
|
{
|
|
current = current->snext;
|
|
if (current == head)
|
|
{ /* We cycled through. Reset head to indicate that */
|
|
head = (FIELD *)0;
|
|
break;
|
|
}
|
|
}
|
|
/* we leave the loop with current pointing to the field after newfield */
|
|
newfield->snext = current;
|
|
newfield->sprev = current->sprev;
|
|
newfield->snext->sprev = newfield;
|
|
newfield->sprev->snext = newfield;
|
|
if (current == head)
|
|
newhead = newfield;
|
|
}
|
|
return (newhead);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : static void Disconnect_Fields(FORM *form)
|
|
|
|
|
| Description : Break association between form and array of fields.
|
|
|
|
|
| Return Values : -
|
|
+--------------------------------------------------------------------------*/
|
|
static void
|
|
Disconnect_Fields(FORM *form)
|
|
{
|
|
if (form->field)
|
|
{
|
|
FIELD **fields;
|
|
|
|
for (fields = form->field; *fields; fields++)
|
|
{
|
|
if (form == (*fields)->form)
|
|
(*fields)->form = (FORM *)0;
|
|
}
|
|
|
|
form->rows = form->cols = 0;
|
|
form->maxfield = form->maxpage = -1;
|
|
form->field = (FIELD **)0;
|
|
if (form->page)
|
|
free(form->page);
|
|
form->page = (_PAGE *) 0;
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : static int Connect_Fields(FORM *form, FIELD **fields)
|
|
|
|
|
| Description : Set association between form and array of fields.
|
|
|
|
|
| Return Values : E_OK - no error
|
|
| E_CONNECTED - a field is already connected
|
|
| E_BAD_ARGUMENT - Invalid form pointer or field array
|
|
| E_SYSTEM_ERROR - not enough memory
|
|
+--------------------------------------------------------------------------*/
|
|
static int
|
|
Connect_Fields(FORM *form, FIELD **fields)
|
|
{
|
|
int field_cnt, j;
|
|
int page_nr;
|
|
int maximum_row_in_field, maximum_col_in_field;
|
|
_PAGE *pg;
|
|
|
|
T((T_CALLED("Connect_Fields(%p,%p)"), (void *)form, (void *)fields));
|
|
|
|
assert(form);
|
|
|
|
form->field = fields;
|
|
form->maxfield = 0;
|
|
form->maxpage = 0;
|
|
|
|
if (!fields)
|
|
RETURN(E_OK);
|
|
|
|
page_nr = 0;
|
|
/* store formpointer in fields and count pages */
|
|
for (field_cnt = 0; fields[field_cnt]; field_cnt++)
|
|
{
|
|
if (fields[field_cnt]->form)
|
|
RETURN(E_CONNECTED);
|
|
if (field_cnt == 0 ||
|
|
(fields[field_cnt]->status & _NEWPAGE))
|
|
page_nr++;
|
|
fields[field_cnt]->form = form;
|
|
}
|
|
if (field_cnt == 0 || (short)field_cnt < 0)
|
|
RETURN(E_BAD_ARGUMENT);
|
|
|
|
/* allocate page structures */
|
|
if ((pg = typeMalloc(_PAGE, page_nr)) != (_PAGE *) 0)
|
|
{
|
|
T((T_CREATE("_PAGE %p"), (void *)pg));
|
|
form->page = pg;
|
|
}
|
|
else
|
|
RETURN(E_SYSTEM_ERROR);
|
|
|
|
/* Cycle through fields and calculate page boundaries as well as
|
|
size of the form */
|
|
for (j = 0; j < field_cnt; j++)
|
|
{
|
|
if (j == 0)
|
|
pg->pmin = (short)j;
|
|
else
|
|
{
|
|
if (fields[j]->status & _NEWPAGE)
|
|
{
|
|
pg->pmax = (short)(j - 1);
|
|
pg++;
|
|
pg->pmin = (short)j;
|
|
}
|
|
}
|
|
|
|
maximum_row_in_field = fields[j]->frow + fields[j]->rows;
|
|
maximum_col_in_field = fields[j]->fcol + fields[j]->cols;
|
|
|
|
if (form->rows < maximum_row_in_field)
|
|
form->rows = (short)maximum_row_in_field;
|
|
if (form->cols < maximum_col_in_field)
|
|
form->cols = (short)maximum_col_in_field;
|
|
}
|
|
|
|
pg->pmax = (short)(field_cnt - 1);
|
|
form->maxfield = (short)field_cnt;
|
|
form->maxpage = (short)page_nr;
|
|
|
|
/* Sort fields on form pages */
|
|
for (page_nr = 0; page_nr < form->maxpage; page_nr++)
|
|
{
|
|
FIELD *fld = (FIELD *)0;
|
|
|
|
for (j = form->page[page_nr].pmin; j <= form->page[page_nr].pmax; j++)
|
|
{
|
|
fields[j]->index = (short)j;
|
|
fields[j]->page = (short)page_nr;
|
|
fld = Insert_Field_By_Position(fields[j], fld);
|
|
}
|
|
if (fld)
|
|
{
|
|
form->page[page_nr].smin = fld->index;
|
|
form->page[page_nr].smax = fld->sprev->index;
|
|
}
|
|
else
|
|
{
|
|
form->page[page_nr].smin = 0;
|
|
form->page[page_nr].smax = 0;
|
|
}
|
|
}
|
|
RETURN(E_OK);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : static int Associate_Fields(FORM *form, FIELD **fields)
|
|
|
|
|
| Description : Set association between form and array of fields.
|
|
| If there are fields, position to first active field.
|
|
|
|
|
| Return Values : E_OK - success
|
|
| E_BAD_ARGUMENT - Invalid form pointer or field array
|
|
| E_CONNECTED - a field is already connected
|
|
| E_SYSTEM_ERROR - not enough memory
|
|
+--------------------------------------------------------------------------*/
|
|
NCURSES_INLINE static int
|
|
Associate_Fields(FORM *form, FIELD **fields)
|
|
{
|
|
int res = Connect_Fields(form, fields);
|
|
|
|
if (res == E_OK)
|
|
{
|
|
if (form->maxpage > 0)
|
|
{
|
|
form->curpage = 0;
|
|
form_driver(form, FIRST_ACTIVE_MAGIC);
|
|
}
|
|
else
|
|
{
|
|
form->curpage = -1;
|
|
form->current = (FIELD *)0;
|
|
}
|
|
}
|
|
return (res);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : FORM *new_form_sp(SCREEN* sp, FIELD** fields )
|
|
|
|
|
| Description : Create new form with given array of fields.
|
|
|
|
|
| Return Values : Pointer to form. NULL if error occurred.
|
|
! Set errno:
|
|
| E_OK - success
|
|
| E_BAD_ARGUMENT - Invalid form pointer or field array
|
|
| E_CONNECTED - a field is already connected
|
|
| E_SYSTEM_ERROR - not enough memory
|
|
+--------------------------------------------------------------------------*/
|
|
FORM_EXPORT(FORM *)
|
|
NCURSES_SP_NAME(new_form) (NCURSES_SP_DCLx FIELD **fields)
|
|
{
|
|
int err = E_SYSTEM_ERROR;
|
|
FORM *form = (FORM *)0;
|
|
|
|
T((T_CALLED("new_form(%p,%p)"), (void *)SP_PARM, (void *)fields));
|
|
|
|
if (IsValidScreen(SP_PARM))
|
|
{
|
|
form = typeMalloc(FORM, 1);
|
|
|
|
if (form)
|
|
{
|
|
T((T_CREATE("form %p"), (void *)form));
|
|
*form = *_nc_Default_Form;
|
|
/* This ensures win and sub are always non-null,
|
|
so we can derive always the SCREEN that this form is
|
|
running on. */
|
|
form->win = StdScreen(SP_PARM);
|
|
form->sub = StdScreen(SP_PARM);
|
|
if ((err = Associate_Fields(form, fields)) != E_OK)
|
|
{
|
|
free_form(form);
|
|
form = (FORM *)0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!form)
|
|
SET_ERROR(err);
|
|
|
|
returnForm(form);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : FORM* new_form(FIELD** fields )
|
|
|
|
|
| Description : Create new form with given array of fields.
|
|
|
|
|
| Return Values : Pointer to form. NULL if error occurred.
|
|
! Set errno:
|
|
| E_OK - success
|
|
| E_BAD_ARGUMENT - Invalid form pointer or field array
|
|
| E_CONNECTED - a field is already connected
|
|
| E_SYSTEM_ERROR - not enough memory
|
|
+--------------------------------------------------------------------------*/
|
|
#if NCURSES_SP_FUNCS
|
|
FORM_EXPORT(FORM *)
|
|
new_form(FIELD **fields)
|
|
{
|
|
return NCURSES_SP_NAME(new_form) (CURRENT_SCREEN, fields);
|
|
}
|
|
#endif
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : int free_form( FORM *form )
|
|
|
|
|
| Description : Release internal memory associated with form.
|
|
|
|
|
| Return Values : E_OK - no error
|
|
| E_BAD_ARGUMENT - invalid form pointer
|
|
| E_POSTED - form is posted
|
|
+--------------------------------------------------------------------------*/
|
|
FORM_EXPORT(int)
|
|
free_form(FORM *form)
|
|
{
|
|
T((T_CALLED("free_form(%p)"), (void *)form));
|
|
|
|
if (!form)
|
|
RETURN(E_BAD_ARGUMENT);
|
|
|
|
if (form->status & _POSTED)
|
|
RETURN(E_POSTED);
|
|
|
|
Disconnect_Fields(form);
|
|
if (form->page)
|
|
free(form->page);
|
|
free(form);
|
|
|
|
RETURN(E_OK);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : int set_form_fields( FORM *form, FIELD **fields )
|
|
|
|
|
| Description : Set a new association of an array of fields to a form
|
|
|
|
|
| Return Values : E_OK - no error
|
|
| E_BAD_ARGUMENT - Invalid form pointer or field array
|
|
| E_CONNECTED - a field is already connected
|
|
| E_POSTED - form is posted
|
|
| E_SYSTEM_ERROR - not enough memory
|
|
+--------------------------------------------------------------------------*/
|
|
FORM_EXPORT(int)
|
|
set_form_fields(FORM *form, FIELD **fields)
|
|
{
|
|
FIELD **old;
|
|
int res;
|
|
|
|
T((T_CALLED("set_form_fields(%p,%p)"), (void *)form, (void *)fields));
|
|
|
|
if (!form)
|
|
RETURN(E_BAD_ARGUMENT);
|
|
|
|
if (form->status & _POSTED)
|
|
RETURN(E_POSTED);
|
|
|
|
old = form->field;
|
|
Disconnect_Fields(form);
|
|
|
|
if ((res = Associate_Fields(form, fields)) != E_OK)
|
|
Connect_Fields(form, old);
|
|
|
|
RETURN(res);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : FIELD **form_fields( const FORM *form )
|
|
|
|
|
| Description : Retrieve array of fields
|
|
|
|
|
| Return Values : Pointer to field array
|
|
+--------------------------------------------------------------------------*/
|
|
FORM_EXPORT(FIELD **)
|
|
form_fields(const FORM *form)
|
|
{
|
|
T((T_CALLED("form_field(%p)"), (const void *)form));
|
|
returnFieldPtr(Normalize_Form(form)->field);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnform
|
|
| Function : int field_count( const FORM *form )
|
|
|
|
|
| Description : Retrieve number of fields
|
|
|
|
|
| Return Values : Number of fields, -1 if none are defined
|
|
+--------------------------------------------------------------------------*/
|
|
FORM_EXPORT(int)
|
|
field_count(const FORM *form)
|
|
{
|
|
T((T_CALLED("field_count(%p)"), (const void *)form));
|
|
|
|
returnCode(Normalize_Form(form)->maxfield);
|
|
}
|
|
|
|
/* frm_def.c ends here */
|