1 /* 2 * $Id: yesno.c,v 1.57 2012/12/01 01:48:21 tom Exp $ 3 * 4 * yesno.c -- implements the yes/no box 5 * 6 * Copyright 1999-2011,2012 Thomas E. Dickey 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU Lesser General Public License, version 2.1 10 * as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this program; if not, write to 19 * Free Software Foundation, Inc. 20 * 51 Franklin St., Fifth Floor 21 * Boston, MA 02110, USA. 22 * 23 * An earlier version of this program lists as authors 24 * Savio Lam (lam836@cs.cuhk.hk) 25 */ 26 27 #include <dialog.h> 28 #include <dlg_keys.h> 29 30 /* 31 * Display a dialog box with two buttons - Yes and No. 32 */ 33 int 34 dialog_yesno(const char *title, const char *cprompt, int height, int width) 35 { 36 /* *INDENT-OFF* */ 37 static DLG_KEYS_BINDING binding[] = { 38 HELPKEY_BINDINGS, 39 ENTERKEY_BINDINGS, 40 TRAVERSE_BINDINGS, 41 SCROLLKEY_BINDINGS, 42 END_KEYS_BINDING 43 }; 44 /* *INDENT-ON* */ 45 46 int x, y; 47 int key = 0, fkey; 48 int code; 49 int button = dlg_default_button(); 50 WINDOW *dialog = 0; 51 int result = DLG_EXIT_UNKNOWN; 52 char *prompt = dlg_strclone(cprompt); 53 const char **buttons = dlg_yes_labels(); 54 int min_width = 25; 55 bool show = TRUE; 56 int page, last = 0, offset = 0; 57 58 #ifdef KEY_RESIZE 59 int req_high = height; 60 int req_wide = width; 61 restart: 62 #endif 63 64 dlg_tab_correct_str(prompt); 65 dlg_button_layout(buttons, &min_width); 66 dlg_auto_size(title, prompt, &height, &width, 2, min_width); 67 dlg_print_size(height, width); 68 dlg_ctl_size(height, width); 69 70 x = dlg_box_x_ordinate(width); 71 y = dlg_box_y_ordinate(height); 72 73 #ifdef KEY_RESIZE 74 if (dialog != 0) 75 dlg_move_window(dialog, height, width, y, x); 76 else 77 #endif 78 { 79 dialog = dlg_new_window(height, width, y, x); 80 dlg_register_window(dialog, "yesno", binding); 81 dlg_register_buttons(dialog, "yesno", buttons); 82 } 83 84 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr); 85 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr); 86 dlg_draw_title(dialog, title); 87 dlg_draw_helpline(dialog, FALSE); 88 89 (void) wattrset(dialog, dialog_attr); 90 91 page = height - (1 + 3 * MARGIN); 92 dlg_draw_buttons(dialog, 93 height - 2 * MARGIN, 0, 94 buttons, button, FALSE, width); 95 96 while (result == DLG_EXIT_UNKNOWN) { 97 if (show) { 98 last = dlg_print_scrolled(dialog, prompt, offset, 99 page, width, TRUE); 100 dlg_trace_win(dialog); 101 show = FALSE; 102 } 103 key = dlg_mouse_wgetch(dialog, &fkey); 104 if (dlg_result_key(key, fkey, &result)) 105 break; 106 if ((code = dlg_char_to_button(key, buttons)) >= 0) { 107 result = dlg_ok_buttoncode(code); 108 break; 109 } 110 /* handle function keys */ 111 if (fkey) { 112 switch (key) { 113 case DLGK_FIELD_NEXT: 114 button = dlg_next_button(buttons, button); 115 if (button < 0) 116 button = 0; 117 dlg_draw_buttons(dialog, 118 height - 2, 0, 119 buttons, button, 120 FALSE, width); 121 break; 122 case DLGK_FIELD_PREV: 123 button = dlg_prev_button(buttons, button); 124 if (button < 0) 125 button = 0; 126 dlg_draw_buttons(dialog, 127 height - 2, 0, 128 buttons, button, 129 FALSE, width); 130 break; 131 case DLGK_ENTER: 132 result = dlg_yes_buttoncode(button); 133 break; 134 #ifdef KEY_RESIZE 135 case KEY_RESIZE: 136 dlg_clear(); 137 height = req_high; 138 width = req_wide; 139 goto restart; 140 #endif 141 default: 142 if (is_DLGK_MOUSE(key)) { 143 result = dlg_yes_buttoncode(key - M_EVENT); 144 if (result < 0) 145 result = DLG_EXIT_OK; 146 } else if (dlg_check_scrolled(key, last, page, 147 &show, &offset) != 0) { 148 beep(); 149 } 150 break; 151 } 152 } else { 153 beep(); 154 } 155 } 156 157 dlg_del_window(dialog); 158 dlg_mouse_free_regions(); 159 free(prompt); 160 return result; 161 } 162