1/* 2 * $Id: inputbox.c,v 1.93 2021/01/17 16:36:37 tom Exp $ 3 * 4 * inputbox.c -- implements the input box 5 * 6 * Copyright 2000-2020,2021 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 <dlg_internals.h> 28#include <dlg_keys.h> 29 30#define sTEXT -1 31 32#define NAVIGATE_BINDINGS \ 33 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_DOWN ), \ 34 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), \ 35 DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \ 36 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \ 37 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ), \ 38 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_UP ) 39 40#define BTN_HIGH 1 41#define HDR_HIGH 1 42#define MIN_HIGH (HDR_HIGH + (MARGIN * 2 + 1) + (BTN_HIGH + MARGIN * 2)) 43#define MIN_WIDE 26 44 45/* 46 * Display a dialog box for entering a string 47 */ 48int 49dialog_inputbox(const char *title, const char *cprompt, int height, int width, 50 const char *init, const int password) 51{ 52 /* *INDENT-OFF* */ 53 static DLG_KEYS_BINDING binding[] = { 54 HELPKEY_BINDINGS, 55 ENTERKEY_BINDINGS, 56 NAVIGATE_BINDINGS, 57 TOGGLEKEY_BINDINGS, 58 END_KEYS_BINDING 59 }; 60 static DLG_KEYS_BINDING binding2[] = { 61 INPUTSTR_BINDINGS, 62 HELPKEY_BINDINGS, 63 ENTERKEY_BINDINGS, 64 NAVIGATE_BINDINGS, 65 /* no TOGGLEKEY_BINDINGS, since that includes space... */ 66 END_KEYS_BINDING 67 }; 68 /* *INDENT-ON* */ 69 70#ifdef KEY_RESIZE 71 int old_height = height; 72 int old_width = width; 73#endif 74 int xorg, yorg; 75 int x, y, box_y, box_x, box_width; 76 int show_buttons; 77 int col_offset = 0; 78 int chr_offset = 0; 79 int key, fkey, code; 80 int result = DLG_EXIT_UNKNOWN; 81 int state; 82 bool first; 83 bool edited; 84 char *input; 85 WINDOW *dialog; 86 WINDOW *editor; 87 char *prompt = dlg_strclone(cprompt); 88 const char **buttons = dlg_ok_labels(); 89 90 dlg_does_output(); 91 92 DLG_TRACE(("# inputbox args:\n")); 93 DLG_TRACE2S("title", title); 94 DLG_TRACE2S("message", cprompt); 95 DLG_TRACE2N("height", height); 96 DLG_TRACE2N("width", width); 97 DLG_TRACE2S("init", init); 98 DLG_TRACE2N("password", password); 99 100 dlg_tab_correct_str(prompt); 101 102 /* Set up the initial value */ 103 input = dlg_set_result(init); 104 edited = FALSE; 105 106#ifdef KEY_RESIZE 107 retry: 108#endif 109 show_buttons = TRUE; 110 state = dialog_vars.default_button >= 0 ? dlg_default_button() : sTEXT; 111 first = (state == sTEXT); 112 key = fkey = 0; 113 114 if (init != NULL) { 115 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, 116 MIN(MAX(dlg_count_columns(init) + 7, MIN_WIDE), 117 SCOLS - (dialog_vars.begin_set ? 118 dialog_vars.begin_x : 0))); 119 chr_offset = (int) strlen(init); 120 } else { 121 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE); 122 } 123 dlg_button_layout(buttons, &width); 124 dlg_print_size(height, width); 125 dlg_ctl_size(height, width); 126 127 xorg = dlg_box_x_ordinate(width); 128 yorg = dlg_box_y_ordinate(height); 129 130 dialog = dlg_new_window(height, width, yorg, xorg); 131 dlg_register_window(dialog, "inputbox", binding); 132 dlg_register_buttons(dialog, "inputbox", buttons); 133 134 dlg_mouse_setbase(xorg, yorg); 135 136 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr); 137 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr); 138 dlg_draw_title(dialog, title); 139 140 dlg_attrset(dialog, dialog_attr); 141 dlg_draw_helpline(dialog, FALSE); 142 dlg_print_autowrap(dialog, prompt, height, width); 143 144 /* Draw the input field box */ 145 box_width = width - 6; 146 getyx(dialog, y, x); 147 (void) x; 148 box_y = y + 2; 149 box_x = (width - box_width) / 2; 150 dlg_mouse_mkregion(y + 1, box_x - 1, 3, box_width + 2, 'i'); 151 dlg_draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2, 152 border_attr, border2_attr); 153 154 /* Make a window for the input-field, to associate bindings */ 155 editor = dlg_sub_window(dialog, 1, box_width, yorg + box_y, xorg + box_x); 156 dlg_register_window(editor, "inputbox2", binding2); 157 158 if (*input != '\0') { 159 dlg_show_string(editor, input, chr_offset, inputbox_attr, 160 0, 0, box_width, (bool) (password != 0), first); 161 wsyncup(editor); 162 wcursyncup(editor); 163 } 164 165 while (result == DLG_EXIT_UNKNOWN) { 166 /* 167 * The last field drawn determines where the cursor is shown: 168 */ 169 if (show_buttons) { 170 show_buttons = FALSE; 171 col_offset = dlg_edit_offset(input, chr_offset, box_width); 172 (void) wmove(dialog, box_y, box_x + col_offset); 173 dlg_draw_buttons(dialog, height - 2, 0, buttons, state, FALSE, width); 174 } 175 176 if (!first) { 177 if (*input != '\0' && !edited) { 178 dlg_show_string(editor, input, chr_offset, inputbox_attr, 179 0, 0, box_width, (bool) (password != 0), first); 180 wmove(editor, 0, chr_offset); 181 wsyncup(editor); 182 wcursyncup(editor); 183 } 184 key = dlg_mouse_wgetch((state == sTEXT) ? editor : dialog, &fkey); 185 if (dlg_result_key(key, fkey, &result)) { 186 if (!dlg_button_key(result, &code, &key, &fkey)) 187 break; 188 } 189 } 190 191 /* 192 * Handle mouse clicks first, since we want to know if this is a button, 193 * or something that dlg_edit_string() should handle. 194 */ 195 if (fkey 196 && is_DLGK_MOUSE(key) 197 && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) { 198 result = code; 199 continue; 200 } 201 202 if (state == sTEXT) { /* Input box selected */ 203 int edit = dlg_edit_string(input, &chr_offset, key, fkey, first); 204 205 if (edit) { 206 dlg_show_string(editor, input, chr_offset, inputbox_attr, 207 0, 0, box_width, (bool) (password != 0), first); 208 wsyncup(editor); 209 wcursyncup(editor); 210 first = FALSE; 211 edited = TRUE; 212 continue; 213 } else if (first) { 214 first = FALSE; 215 continue; 216 } 217 } 218 219 /* handle non-functionkeys */ 220 if (!fkey && (code = dlg_char_to_button(key, buttons)) >= 0) { 221 dlg_del_window(dialog); 222 result = dlg_ok_buttoncode(code); 223 continue; 224 } 225 226 /* handle functionkeys */ 227 if (fkey) { 228 switch (key) { 229 case DLGK_MOUSE('i'): /* mouse enter events */ 230 state = 0; 231 /* FALLTHRU */ 232 case DLGK_FIELD_PREV: 233 show_buttons = TRUE; 234 state = dlg_prev_ok_buttonindex(state, sTEXT); 235 break; 236 case DLGK_FIELD_NEXT: 237 show_buttons = TRUE; 238 state = dlg_next_ok_buttonindex(state, sTEXT); 239 break; 240 case DLGK_TOGGLE: 241 case DLGK_ENTER: 242 dlg_del_window(dialog); 243 result = (state >= 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK; 244 break; 245 case DLGK_LEAVE: 246 if (state >= 0) 247 result = dlg_ok_buttoncode(state); 248 break; 249#ifdef KEY_RESIZE 250 case KEY_RESIZE: 251 dlg_will_resize(dialog); 252 /* reset data */ 253 height = old_height; 254 width = old_width; 255 /* repaint */ 256 _dlg_resize_cleanup(dialog); 257 goto retry; 258#endif 259 default: 260 beep(); 261 break; 262 } 263 } else if (key > 0) { 264 beep(); 265 } 266 } 267 AddLastKey(); 268 269 dlg_unregister_window(editor); 270 dlg_del_window(dialog); 271 dlg_mouse_free_regions(); 272 free(prompt); 273 return result; 274} 275