[1765] | 1 | /*
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| 2 | * inputbox.c -- implements the input box
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| 3 | *
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| 4 | * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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| 5 | * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
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| 6 | *
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| 7 | * This program is free software; you can redistribute it and/or
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| 8 | * modify it under the terms of the GNU General Public License
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| 9 | * as published by the Free Software Foundation; either version 2
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| 10 | * of the License, or (at your option) any later version.
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| 11 | *
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| 12 | * This program is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 20 | */
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| 21 |
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| 22 | #include "dialog.h"
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| 23 |
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| 24 | char dialog_input_result[MAX_LEN + 1];
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| 25 |
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| 26 | /*
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| 27 | * Print the termination buttons
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| 28 | */
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| 29 | static void print_buttons(WINDOW * dialog, int height, int width, int selected)
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| 30 | {
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| 31 | int x = width / 2 - 11;
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| 32 | int y = height - 2;
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| 33 |
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| 34 | print_button(dialog, " Ok ", y, x, selected == 0);
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| 35 | print_button(dialog, " Help ", y, x + 14, selected == 1);
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| 36 |
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| 37 | wmove(dialog, y, x + 1 + 14 * selected);
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| 38 | wrefresh(dialog);
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| 39 | }
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| 40 |
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| 41 | /*
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| 42 | * Display a dialog box for inputing a string
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| 43 | */
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| 44 | int dialog_inputbox(const char *title, const char *prompt, int height, int width,
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| 45 | const char *init)
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| 46 | {
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| 47 | int i, x, y, box_y, box_x, box_width;
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| 48 | int input_x = 0, scroll = 0, key = 0, button = -1;
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| 49 | char *instr = dialog_input_result;
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| 50 | WINDOW *dialog;
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| 51 |
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| 52 | /* center dialog box on screen */
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| 53 | x = (COLS - width) / 2;
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| 54 | y = (LINES - height) / 2;
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| 55 |
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| 56 | draw_shadow(stdscr, y, x, height, width);
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| 57 |
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| 58 | dialog = newwin(height, width, y, x);
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| 59 | keypad(dialog, TRUE);
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| 60 |
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| 61 | draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
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| 62 | wattrset(dialog, border_attr);
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| 63 | mvwaddch(dialog, height - 3, 0, ACS_LTEE);
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| 64 | for (i = 0; i < width - 2; i++)
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| 65 | waddch(dialog, ACS_HLINE);
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| 66 | wattrset(dialog, dialog_attr);
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| 67 | waddch(dialog, ACS_RTEE);
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| 68 |
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| 69 | print_title(dialog, title, width);
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| 70 |
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| 71 | wattrset(dialog, dialog_attr);
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| 72 | print_autowrap(dialog, prompt, width - 2, 1, 3);
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| 73 |
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| 74 | /* Draw the input field box */
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| 75 | box_width = width - 6;
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| 76 | getyx(dialog, y, x);
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| 77 | box_y = y + 2;
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| 78 | box_x = (width - box_width) / 2;
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| 79 | draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2, border_attr, dialog_attr);
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| 80 |
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| 81 | print_buttons(dialog, height, width, 0);
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| 82 |
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| 83 | /* Set up the initial value */
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| 84 | wmove(dialog, box_y, box_x);
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| 85 | wattrset(dialog, inputbox_attr);
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| 86 |
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| 87 | if (!init)
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| 88 | instr[0] = '\0';
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| 89 | else
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| 90 | strcpy(instr, init);
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| 91 |
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| 92 | input_x = strlen(instr);
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| 93 |
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| 94 | if (input_x >= box_width) {
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| 95 | scroll = input_x - box_width + 1;
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| 96 | input_x = box_width - 1;
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| 97 | for (i = 0; i < box_width - 1; i++)
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| 98 | waddch(dialog, instr[scroll + i]);
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| 99 | } else {
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| 100 | waddstr(dialog, instr);
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| 101 | }
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| 102 |
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| 103 | wmove(dialog, box_y, box_x + input_x);
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| 104 |
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| 105 | wrefresh(dialog);
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| 106 |
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| 107 | while (key != ESC) {
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| 108 | key = wgetch(dialog);
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| 109 |
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| 110 | if (button == -1) { /* Input box selected */
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| 111 | switch (key) {
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| 112 | case TAB:
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| 113 | case KEY_UP:
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| 114 | case KEY_DOWN:
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| 115 | break;
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| 116 | case KEY_LEFT:
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| 117 | continue;
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| 118 | case KEY_RIGHT:
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| 119 | continue;
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| 120 | case KEY_BACKSPACE:
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| 121 | case 127:
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| 122 | if (input_x || scroll) {
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| 123 | wattrset(dialog, inputbox_attr);
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| 124 | if (!input_x) {
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| 125 | scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
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| 126 | wmove(dialog, box_y, box_x);
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| 127 | for (i = 0; i < box_width; i++)
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| 128 | waddch(dialog,
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| 129 | instr[scroll + input_x + i] ?
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| 130 | instr[scroll + input_x + i] : ' ');
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| 131 | input_x = strlen(instr) - scroll;
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| 132 | } else
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| 133 | input_x--;
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| 134 | instr[scroll + input_x] = '\0';
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| 135 | mvwaddch(dialog, box_y, input_x + box_x, ' ');
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| 136 | wmove(dialog, box_y, input_x + box_x);
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| 137 | wrefresh(dialog);
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| 138 | }
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| 139 | continue;
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| 140 | default:
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| 141 | if (key < 0x100 && isprint(key)) {
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| 142 | if (scroll + input_x < MAX_LEN) {
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| 143 | wattrset(dialog, inputbox_attr);
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| 144 | instr[scroll + input_x] = key;
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| 145 | instr[scroll + input_x + 1] = '\0';
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| 146 | if (input_x == box_width - 1) {
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| 147 | scroll++;
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| 148 | wmove(dialog, box_y, box_x);
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| 149 | for (i = 0; i < box_width - 1; i++)
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| 150 | waddch(dialog, instr [scroll + i]);
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| 151 | } else {
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| 152 | wmove(dialog, box_y, input_x++ + box_x);
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| 153 | waddch(dialog, key);
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| 154 | }
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| 155 | wrefresh(dialog);
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| 156 | } else
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| 157 | flash(); /* Alarm user about overflow */
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| 158 | continue;
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| 159 | }
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| 160 | }
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| 161 | }
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| 162 | switch (key) {
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| 163 | case 'O':
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| 164 | case 'o':
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| 165 | delwin(dialog);
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| 166 | return 0;
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| 167 | case 'H':
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| 168 | case 'h':
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| 169 | delwin(dialog);
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| 170 | return 1;
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| 171 | case KEY_UP:
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| 172 | case KEY_LEFT:
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| 173 | switch (button) {
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| 174 | case -1:
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| 175 | button = 1; /* Indicates "Cancel" button is selected */
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| 176 | print_buttons(dialog, height, width, 1);
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| 177 | break;
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| 178 | case 0:
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| 179 | button = -1; /* Indicates input box is selected */
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| 180 | print_buttons(dialog, height, width, 0);
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| 181 | wmove(dialog, box_y, box_x + input_x);
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| 182 | wrefresh(dialog);
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| 183 | break;
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| 184 | case 1:
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| 185 | button = 0; /* Indicates "OK" button is selected */
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| 186 | print_buttons(dialog, height, width, 0);
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| 187 | break;
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| 188 | }
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| 189 | break;
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| 190 | case TAB:
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| 191 | case KEY_DOWN:
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| 192 | case KEY_RIGHT:
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| 193 | switch (button) {
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| 194 | case -1:
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| 195 | button = 0; /* Indicates "OK" button is selected */
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| 196 | print_buttons(dialog, height, width, 0);
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| 197 | break;
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| 198 | case 0:
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| 199 | button = 1; /* Indicates "Cancel" button is selected */
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| 200 | print_buttons(dialog, height, width, 1);
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| 201 | break;
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| 202 | case 1:
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| 203 | button = -1; /* Indicates input box is selected */
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| 204 | print_buttons(dialog, height, width, 0);
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| 205 | wmove(dialog, box_y, box_x + input_x);
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| 206 | wrefresh(dialog);
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| 207 | break;
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| 208 | }
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| 209 | break;
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| 210 | case ' ':
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| 211 | case '\n':
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| 212 | delwin(dialog);
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| 213 | return (button == -1 ? 0 : button);
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| 214 | case 'X':
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| 215 | case 'x':
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| 216 | key = ESC;
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| 217 | case ESC:
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| 218 | break;
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| 219 | }
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| 220 | }
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| 221 |
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| 222 | delwin(dialog);
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| 223 | return -1; /* ESC pressed */
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| 224 | }
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