1/* 2 * inputbox.c -- implements the input box 3 * 4 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk) 5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com) 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22#include "dialog.h" 23 24char dialog_input_result[MAX_LEN + 1]; 25 26/* 27 * Print the termination buttons 28 */ 29static void print_buttons(WINDOW * dialog, int height, int width, int selected) 30{ 31 int x = width / 2 - 11; 32 int y = height - 2; 33 34 print_button(dialog, " Ok ", y, x, selected == 0); 35 print_button(dialog, " Help ", y, x + 14, selected == 1); 36 37 wmove(dialog, y, x + 1 + 14 * selected); 38 wrefresh(dialog); 39} 40 41/* 42 * Display a dialog box for inputing a string 43 */ 44int dialog_inputbox(const char *title, const char *prompt, int height, int width, 45 const char *init) 46{ 47 int i, x, y, box_y, box_x, box_width; 48 int input_x = 0, scroll = 0, key = 0, button = -1; 49 char *instr = dialog_input_result; 50 WINDOW *dialog; 51 52 /* center dialog box on screen */ 53 x = (COLS - width) / 2; 54 y = (LINES - height) / 2; 55 56 draw_shadow(stdscr, y, x, height, width); 57 58 dialog = newwin(height, width, y, x); 59 keypad(dialog, TRUE); 60 61 draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr); 62 wattrset(dialog, border_attr); 63 mvwaddch(dialog, height - 3, 0, ACS_LTEE); 64 for (i = 0; i < width - 2; i++) 65 waddch(dialog, ACS_HLINE); 66 wattrset(dialog, dialog_attr); 67 waddch(dialog, ACS_RTEE); 68 69 print_title(dialog, title, width); 70 71 wattrset(dialog, dialog_attr); 72 print_autowrap(dialog, prompt, width - 2, 1, 3); 73 74 /* Draw the input field box */ 75 box_width = width - 6; 76 getyx(dialog, y, x); 77 box_y = y + 2; 78 box_x = (width - box_width) / 2; 79 draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2, border_attr, dialog_attr); 80 81 print_buttons(dialog, height, width, 0); 82 83 /* Set up the initial value */ 84 wmove(dialog, box_y, box_x); 85 wattrset(dialog, inputbox_attr); 86 87 if (!init) 88 instr[0] = '\0'; 89 else 90 strcpy(instr, init); 91 92 input_x = strlen(instr); 93 94 if (input_x >= box_width) { 95 scroll = input_x - box_width + 1; 96 input_x = box_width - 1; 97 for (i = 0; i < box_width - 1; i++) 98 waddch(dialog, instr[scroll + i]); 99 } else { 100 waddstr(dialog, instr); 101 } 102 103 wmove(dialog, box_y, box_x + input_x); 104 105 wrefresh(dialog); 106 107 while (key != ESC) { 108 key = wgetch(dialog); 109 110 if (button == -1) { /* Input box selected */ 111 switch (key) { 112 case TAB: 113 case KEY_UP: 114 case KEY_DOWN: 115 break; 116 case KEY_LEFT: 117 continue; 118 case KEY_RIGHT: 119 continue; 120 case KEY_BACKSPACE: 121 case 127: 122 if (input_x || scroll) { 123 wattrset(dialog, inputbox_attr); 124 if (!input_x) { 125 scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1); 126 wmove(dialog, box_y, box_x); 127 for (i = 0; i < box_width; i++) 128 waddch(dialog, 129 instr[scroll + input_x + i] ? 130 instr[scroll + input_x + i] : ' '); 131 input_x = strlen(instr) - scroll; 132 } else 133 input_x--; 134 instr[scroll + input_x] = '\0'; 135 mvwaddch(dialog, box_y, input_x + box_x, ' '); 136 wmove(dialog, box_y, input_x + box_x); 137 wrefresh(dialog); 138 } 139 continue; 140 default: 141 if (key < 0x100 && isprint(key)) { 142 if (scroll + input_x < MAX_LEN) { 143 wattrset(dialog, inputbox_attr); 144 instr[scroll + input_x] = key; 145 instr[scroll + input_x + 1] = '\0'; 146 if (input_x == box_width - 1) { 147 scroll++; 148 wmove(dialog, box_y, box_x); 149 for (i = 0; i < box_width - 1; i++) 150 waddch(dialog, instr [scroll + i]); 151 } else { 152 wmove(dialog, box_y, input_x++ + box_x); 153 waddch(dialog, key); 154 } 155 wrefresh(dialog); 156 } else 157 flash(); /* Alarm user about overflow */ 158 continue; 159 } 160 } 161 } 162 switch (key) { 163 case 'O': 164 case 'o': 165 delwin(dialog); 166 return 0; 167 case 'H': 168 case 'h': 169 delwin(dialog); 170 return 1; 171 case KEY_UP: 172 case KEY_LEFT: 173 switch (button) { 174 case -1: 175 button = 1; /* Indicates "Cancel" button is selected */ 176 print_buttons(dialog, height, width, 1); 177 break; 178 case 0: 179 button = -1; /* Indicates input box is selected */ 180 print_buttons(dialog, height, width, 0); 181 wmove(dialog, box_y, box_x + input_x); 182 wrefresh(dialog); 183 break; 184 case 1: 185 button = 0; /* Indicates "OK" button is selected */ 186 print_buttons(dialog, height, width, 0); 187 break; 188 } 189 break; 190 case TAB: 191 case KEY_DOWN: 192 case KEY_RIGHT: 193 switch (button) { 194 case -1: 195 button = 0; /* Indicates "OK" button is selected */ 196 print_buttons(dialog, height, width, 0); 197 break; 198 case 0: 199 button = 1; /* Indicates "Cancel" button is selected */ 200 print_buttons(dialog, height, width, 1); 201 break; 202 case 1: 203 button = -1; /* Indicates input box is selected */ 204 print_buttons(dialog, height, width, 0); 205 wmove(dialog, box_y, box_x + input_x); 206 wrefresh(dialog); 207 break; 208 } 209 break; 210 case ' ': 211 case '\n': 212 delwin(dialog); 213 return (button == -1 ? 0 : button); 214 case 'X': 215 case 'x': 216 key = ESC; 217 case ESC: 218 break; 219 } 220 } 221 222 delwin(dialog); 223 return -1; /* ESC pressed */ 224} 225