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- /*
- * inputbox.c -- implements the input box
- *
- * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
- * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #include "dialog.h"
- char dialog_input_result[MAX_LEN + 1];
- /*
- * Print the termination buttons
- */
- static void print_buttons(WINDOW * dialog, int height, int width, int selected)
- {
- int x = width / 2 - 11;
- int y = height - 2;
- print_button(dialog, " Ok ", y, x, selected == 0);
- print_button(dialog, " Help ", y, x + 14, selected == 1);
- wmove(dialog, y, x + 1 + 14 * selected);
- wrefresh(dialog);
- }
- /*
- * Display a dialog box for inputing a string
- */
- int dialog_inputbox(const char *title, const char *prompt, int height, int width,
- const char *init)
- {
- int i, x, y, box_y, box_x, box_width;
- int input_x = 0, scroll = 0, key = 0, button = -1;
- char *instr = dialog_input_result;
- WINDOW *dialog;
- /* center dialog box on screen */
- x = (COLS - width) / 2;
- y = (LINES - height) / 2;
- draw_shadow(stdscr, y, x, height, width);
- dialog = newwin(height, width, y, x);
- keypad(dialog, TRUE);
- draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
- wattrset(dialog, border_attr);
- mvwaddch(dialog, height - 3, 0, ACS_LTEE);
- for (i = 0; i < width - 2; i++)
- waddch(dialog, ACS_HLINE);
- wattrset(dialog, dialog_attr);
- waddch(dialog, ACS_RTEE);
- print_title(dialog, title, width);
- wattrset(dialog, dialog_attr);
- print_autowrap(dialog, prompt, width - 2, 1, 3);
- /* Draw the input field box */
- box_width = width - 6;
- getyx(dialog, y, x);
- box_y = y + 2;
- box_x = (width - box_width) / 2;
- draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2, border_attr, dialog_attr);
- print_buttons(dialog, height, width, 0);
- /* Set up the initial value */
- wmove(dialog, box_y, box_x);
- wattrset(dialog, inputbox_attr);
- if (!init)
- instr[0] = '\0';
- else
- strcpy(instr, init);
- input_x = strlen(instr);
- if (input_x >= box_width) {
- scroll = input_x - box_width + 1;
- input_x = box_width - 1;
- for (i = 0; i < box_width - 1; i++)
- waddch(dialog, instr[scroll + i]);
- } else {
- waddstr(dialog, instr);
- }
- wmove(dialog, box_y, box_x + input_x);
- wrefresh(dialog);
- while (key != ESC) {
- key = wgetch(dialog);
- if (button == -1) { /* Input box selected */
- switch (key) {
- case TAB:
- case KEY_UP:
- case KEY_DOWN:
- break;
- case KEY_LEFT:
- continue;
- case KEY_RIGHT:
- continue;
- case KEY_BACKSPACE:
- case 127:
- if (input_x || scroll) {
- wattrset(dialog, inputbox_attr);
- if (!input_x) {
- scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
- wmove(dialog, box_y, box_x);
- for (i = 0; i < box_width; i++)
- waddch(dialog,
- instr[scroll + input_x + i] ?
- instr[scroll + input_x + i] : ' ');
- input_x = strlen(instr) - scroll;
- } else
- input_x--;
- instr[scroll + input_x] = '\0';
- mvwaddch(dialog, box_y, input_x + box_x, ' ');
- wmove(dialog, box_y, input_x + box_x);
- wrefresh(dialog);
- }
- continue;
- default:
- if (key < 0x100 && isprint(key)) {
- if (scroll + input_x < MAX_LEN) {
- wattrset(dialog, inputbox_attr);
- instr[scroll + input_x] = key;
- instr[scroll + input_x + 1] = '\0';
- if (input_x == box_width - 1) {
- scroll++;
- wmove(dialog, box_y, box_x);
- for (i = 0; i < box_width - 1; i++)
- waddch(dialog, instr [scroll + i]);
- } else {
- wmove(dialog, box_y, input_x++ + box_x);
- waddch(dialog, key);
- }
- wrefresh(dialog);
- } else
- flash(); /* Alarm user about overflow */
- continue;
- }
- }
- }
- switch (key) {
- case 'O':
- case 'o':
- delwin(dialog);
- return 0;
- case 'H':
- case 'h':
- delwin(dialog);
- return 1;
- case KEY_UP:
- case KEY_LEFT:
- switch (button) {
- case -1:
- button = 1; /* Indicates "Cancel" button is selected */
- print_buttons(dialog, height, width, 1);
- break;
- case 0:
- button = -1; /* Indicates input box is selected */
- print_buttons(dialog, height, width, 0);
- wmove(dialog, box_y, box_x + input_x);
- wrefresh(dialog);
- break;
- case 1:
- button = 0; /* Indicates "OK" button is selected */
- print_buttons(dialog, height, width, 0);
- break;
- }
- break;
- case TAB:
- case KEY_DOWN:
- case KEY_RIGHT:
- switch (button) {
- case -1:
- button = 0; /* Indicates "OK" button is selected */
- print_buttons(dialog, height, width, 0);
- break;
- case 0:
- button = 1; /* Indicates "Cancel" button is selected */
- print_buttons(dialog, height, width, 1);
- break;
- case 1:
- button = -1; /* Indicates input box is selected */
- print_buttons(dialog, height, width, 0);
- wmove(dialog, box_y, box_x + input_x);
- wrefresh(dialog);
- break;
- }
- break;
- case ' ':
- case '\n':
- delwin(dialog);
- return (button == -1 ? 0 : button);
- case 'X':
- case 'x':
- key = ESC;
- case ESC:
- break;
- }
- }
- delwin(dialog);
- return -1; /* ESC pressed */
- }
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