1 /* 2 * $Id: yesno.c,v 1.62 2018/06/19 22:57:01 tom Exp $ 3 * 4 * yesno.c -- implements the yes/no box 5 * 6 * Copyright 1999-2012,2018 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 SCROLLKEY_BINDINGS, 41 TRAVERSE_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; 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 #endif 62 63 DLG_TRACE(("# yesno args:\n")); 64 DLG_TRACE2S("title", title); 65 DLG_TRACE2S("message", cprompt); 66 DLG_TRACE2N("height", height); 67 DLG_TRACE2N("width", width); 68 69 #ifdef KEY_RESIZE 70 restart: 71 #endif 72 prompt = dlg_strclone(cprompt); 73 dlg_tab_correct_str(prompt); 74 dlg_button_layout(buttons, &min_width); 75 dlg_auto_size(title, prompt, &height, &width, 2, min_width); 76 dlg_print_size(height, width); 77 dlg_ctl_size(height, width); 78 79 x = dlg_box_x_ordinate(width); 80 y = dlg_box_y_ordinate(height); 81 82 #ifdef KEY_RESIZE 83 if (dialog != 0) 84 dlg_move_window(dialog, height, width, y, x); 85 else 86 #endif 87 { 88 dialog = dlg_new_window(height, width, y, x); 89 dlg_register_window(dialog, "yesno", binding); 90 dlg_register_buttons(dialog, "yesno", buttons); 91 } 92 93 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr); 94 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr); 95 dlg_draw_title(dialog, title); 96 dlg_draw_helpline(dialog, FALSE); 97 98 dlg_attrset(dialog, dialog_attr); 99 100 page = height - (1 + 3 * MARGIN); 101 dlg_draw_buttons(dialog, 102 height - 2 * MARGIN, 0, 103 buttons, button, FALSE, width); 104 105 while (result == DLG_EXIT_UNKNOWN) { 106 if (show) { 107 last = dlg_print_scrolled(dialog, prompt, offset, 108 page, width, TRUE); 109 dlg_trace_win(dialog); 110 show = FALSE; 111 } 112 key = dlg_mouse_wgetch(dialog, &fkey); 113 if (dlg_result_key(key, fkey, &result)) 114 break; 115 if ((code = dlg_char_to_button(key, buttons)) >= 0) { 116 result = dlg_ok_buttoncode(code); 117 break; 118 } 119 /* handle function keys */ 120 if (fkey) { 121 switch (key) { 122 case DLGK_FIELD_NEXT: 123 button = dlg_next_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_FIELD_PREV: 132 button = dlg_prev_button(buttons, button); 133 if (button < 0) 134 button = 0; 135 dlg_draw_buttons(dialog, 136 height - 2, 0, 137 buttons, button, 138 FALSE, width); 139 break; 140 case DLGK_ENTER: 141 result = dlg_yes_buttoncode(button); 142 break; 143 #ifdef KEY_RESIZE 144 case KEY_RESIZE: 145 dlg_will_resize(dialog); 146 dlg_clear(); 147 free(prompt); 148 height = req_high; 149 width = req_wide; 150 show = TRUE; 151 goto restart; 152 #endif 153 default: 154 if (is_DLGK_MOUSE(key)) { 155 result = dlg_yes_buttoncode(key - M_EVENT); 156 if (result < 0) 157 result = DLG_EXIT_OK; 158 } else if (dlg_check_scrolled(key, last, page, 159 &show, &offset) != 0) { 160 beep(); 161 } 162 break; 163 } 164 } else { 165 beep(); 166 } 167 } 168 169 dlg_del_window(dialog); 170 dlg_mouse_free_regions(); 171 free(prompt); 172 return result; 173 } 174