1 /****************************************************************************
2 * Copyright (c) 1998-2004,2010 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29 /****************************************************************************
30 * Author: Juergen Pfeifer, 1995,1997 *
31 ****************************************************************************/
32
33 #include "form.priv.h"
34
35 MODULE_ID("$Id: fld_current.c,v 1.12 2010/01/23 21:14:35 tom Exp $")
36
37 /*---------------------------------------------------------------------------
38 | Facility : libnform
39 | Function : int set_current_field(FORM * form,FIELD * field)
40 |
41 | Description : Set the current field of the form to the specified one.
42 |
43 | Return Values : E_OK - success
44 | E_BAD_ARGUMENT - invalid form or field pointer
45 | E_REQUEST_DENIED - field not selectable
46 | E_BAD_STATE - called from a hook routine
47 | E_INVALID_FIELD - current field can't be left
48 | E_SYSTEM_ERROR - system error
49 +--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)50 NCURSES_EXPORT(int)
51 set_current_field(FORM *form, FIELD *field)
52 {
53 int err = E_OK;
54
55 T((T_CALLED("set_current_field(%p,%p)"), (void *)form, (void *)field));
56 if (form == 0 || field == 0)
57 {
58 RETURN(E_BAD_ARGUMENT);
59 }
60 else if ((form != field->form) || Field_Is_Not_Selectable(field))
61 {
62 RETURN(E_REQUEST_DENIED);
63 }
64 else if ((form->status & _POSTED) == 0)
65 {
66 form->current = field;
67 form->curpage = field->page;
68 }
69 else
70 {
71 if ((form->status & _IN_DRIVER) != 0)
72 {
73 err = E_BAD_STATE;
74 }
75 else
76 {
77 if (form->current != field)
78 {
79 if (!_nc_Internal_Validation(form))
80 {
81 err = E_INVALID_FIELD;
82 }
83 else
84 {
85 Call_Hook(form, fieldterm);
86 if (field->page != form->curpage)
87 {
88 Call_Hook(form, formterm);
89 err = _nc_Set_Form_Page(form, (int)field->page, field);
90 Call_Hook(form, forminit);
91 }
92 else
93 {
94 err = _nc_Set_Current_Field(form, field);
95 }
96 Call_Hook(form, fieldinit);
97 (void)_nc_Refresh_Current_Field(form);
98 }
99 }
100 }
101 }
102 RETURN(err);
103 }
104
105 /*---------------------------------------------------------------------------
106 | Facility : libnform
107 | Function : FIELD *current_field(const FORM * form)
108 |
109 | Description : Return the current field.
110 |
111 | Return Values : Pointer to the current field.
112 +--------------------------------------------------------------------------*/
113 NCURSES_EXPORT(FIELD *)
current_field(const FORM * form)114 current_field(const FORM *form)
115 {
116 T((T_CALLED("current_field(%p)"), (const void *)form));
117 returnField(Normalize_Form(form)->current);
118 }
119
120 /*---------------------------------------------------------------------------
121 | Facility : libnform
122 | Function : int field_index(const FIELD * field)
123 |
124 | Description : Return the index of the field in the field-array of
125 | the form.
126 |
127 | Return Values : >= 0 : field index
128 | -1 : fieldpointer invalid or field not connected
129 +--------------------------------------------------------------------------*/
130 NCURSES_EXPORT(int)
field_index(const FIELD * field)131 field_index(const FIELD *field)
132 {
133 T((T_CALLED("field_index(%p)"), (const void *)field));
134 returnCode((field != 0 && field->form != 0) ? (int)field->index : -1);
135 }
136
137 /* fld_current.c ends here */
138