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