1 /**************************************************************************** 2 * Copyright (c) 1998,2000 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 <juergen.pfeifer@gmx.net> 1995,1997 * 31 ****************************************************************************/ 32 #include "form.priv.h" 33 34 MODULE_ID("$Id: fld_current.c,v 1.5 2000/12/10 02:09:38 tom Exp $") 35 36 /*--------------------------------------------------------------------------- 37 | Facility : libnform 38 | Function : int set_current_field(FORM * form,FIELD * field) 39 | 40 | Description : Set the current field of the form to the specified one. 41 | 42 | Return Values : E_OK - success 43 | E_BAD_ARGUMENT - invalid form or field pointer 44 | E_REQUEST_DENIED - field not selectable 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_current_field (FORM * form, FIELD * field) 51 { 52 int err = E_OK; 53 54 if ( !form || !field ) 55 RETURN(E_BAD_ARGUMENT); 56 57 if ( (form != field->form) || Field_Is_Not_Selectable(field) ) 58 RETURN(E_REQUEST_DENIED); 59 60 if (!(form->status & _POSTED)) 61 { 62 form->current = field; 63 form->curpage = field->page; 64 } 65 else 66 { 67 if (form->status & _IN_DRIVER) 68 err = E_BAD_STATE; 69 else 70 { 71 if (form->current != field) 72 { 73 if (!_nc_Internal_Validation(form)) 74 err = E_INVALID_FIELD; 75 else 76 { 77 Call_Hook(form,fieldterm); 78 if (field->page != form->curpage) 79 { 80 Call_Hook(form,formterm); 81 err = _nc_Set_Form_Page(form,field->page,field); 82 Call_Hook(form,forminit); 83 } 84 else 85 { 86 err = _nc_Set_Current_Field(form,field); 87 } 88 Call_Hook(form,fieldinit); 89 _nc_Refresh_Current_Field(form); 90 } 91 } 92 } 93 } 94 RETURN(err); 95 } 96 97 /*--------------------------------------------------------------------------- 98 | Facility : libnform 99 | Function : FIELD *current_field(const FORM * form) 100 | 101 | Description : Return the current field. 102 | 103 | Return Values : Pointer to the current field. 104 +--------------------------------------------------------------------------*/ 105 NCURSES_EXPORT(FIELD *) 106 current_field (const FORM * form) 107 { 108 return Normalize_Form(form)->current; 109 } 110 111 /*--------------------------------------------------------------------------- 112 | Facility : libnform 113 | Function : int field_index(const FIELD * field) 114 | 115 | Description : Return the index of the field in the field-array of 116 | the form. 117 | 118 | Return Values : >= 0 : field index 119 | -1 : fieldpointer invalid or field not connected 120 +--------------------------------------------------------------------------*/ 121 NCURSES_EXPORT(int) 122 field_index (const FIELD * field) 123 { 124 return ( (field && field->form) ? field->index : -1 ); 125 } 126 127 /* fld_current.c ends here */ 128