xref: /freebsd/contrib/ncurses/form/frm_page.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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2  * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
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28 
29 /****************************************************************************
30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
31  ****************************************************************************/
32 
33 #include "form.priv.h"
34 
35 MODULE_ID("$Id: frm_page.c,v 1.10 2004/12/11 22:08:21 tom Exp $")
36 
37 /*---------------------------------------------------------------------------
38 |   Facility      :  libnform
39 |   Function      :  int set_form_page(FORM * form,int  page)
40 |
41 |   Description   :  Set the page number of the form.
42 |
43 |   Return Values :  E_OK              - success
44 |                    E_BAD_ARGUMENT    - invalid form pointer or page number
45 |                    E_BAD_STATE       - called from a hook routine
46 |                    E_INVALID_FIELD   - current field can't be left
47 |                    E_SYSTEM_ERROR    - system error
48 +--------------------------------------------------------------------------*/
49 NCURSES_EXPORT(int)
50 set_form_page(FORM *form, int page)
51 {
52   int err = E_OK;
53 
54   T((T_CALLED("set_form_page(%p,%d)"), form, page));
55 
56   if (!form || (page < 0) || (page >= form->maxpage))
57     RETURN(E_BAD_ARGUMENT);
58 
59   if (!(form->status & _POSTED))
60     {
61       form->curpage = page;
62       form->current = _nc_First_Active_Field(form);
63     }
64   else
65     {
66       if (form->status & _IN_DRIVER)
67 	err = E_BAD_STATE;
68       else
69 	{
70 	  if (form->curpage != page)
71 	    {
72 	      if (!_nc_Internal_Validation(form))
73 		err = E_INVALID_FIELD;
74 	      else
75 		{
76 		  Call_Hook(form, fieldterm);
77 		  Call_Hook(form, formterm);
78 		  err = _nc_Set_Form_Page(form, page, (FIELD *)0);
79 		  Call_Hook(form, forminit);
80 		  Call_Hook(form, fieldinit);
81 		  _nc_Refresh_Current_Field(form);
82 		}
83 	    }
84 	}
85     }
86   RETURN(err);
87 }
88 
89 /*---------------------------------------------------------------------------
90 |   Facility      :  libnform
91 |   Function      :  int form_page(const FORM * form)
92 |
93 |   Description   :  Return the current page of the form.
94 |
95 |   Return Values :  >= 0  : current page number
96 |                    -1    : invalid form pointer
97 +--------------------------------------------------------------------------*/
98 NCURSES_EXPORT(int)
99 form_page(const FORM *form)
100 {
101   T((T_CALLED("form_page(%p)"), form));
102 
103   returnCode(Normalize_Form(form)->curpage);
104 }
105 
106 /* frm_page.c ends here */
107