240 lines
6 KiB
C
240 lines
6 KiB
C
/*
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* inputbox.c -- implements the input box
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*
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* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "dialog.h"
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unsigned char dialog_input_result[MAX_LEN + 1];
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/*
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* Print the termination buttons
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*/
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static void
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print_buttons(WINDOW *dialog, int height, int width, int selected)
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{
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int x = width / 2 - 11;
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int y = height - 2;
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print_button (dialog, " Ok ", y, x, selected==0);
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print_button (dialog, " Help ", y, x + 14, selected==1);
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wmove(dialog, y, x+1+14*selected);
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wrefresh(dialog);
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}
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/*
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* Display a dialog box for inputing a string
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*/
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int
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dialog_inputbox (const char *title, const char *prompt, int height, int width,
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const char *init)
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{
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int i, x, y, box_y, box_x, box_width;
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int input_x = 0, scroll = 0, key = 0, button = -1;
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unsigned char *instr = dialog_input_result;
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WINDOW *dialog;
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/* center dialog box on screen */
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x = (COLS - width) / 2;
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y = (LINES - height) / 2;
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draw_shadow (stdscr, y, x, height, width);
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dialog = newwin (height, width, y, x);
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keypad (dialog, TRUE);
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draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
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wattrset (dialog, border_attr);
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mvwaddch (dialog, height-3, 0, ACS_LTEE);
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for (i = 0; i < width - 2; i++)
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waddch (dialog, ACS_HLINE);
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wattrset (dialog, dialog_attr);
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waddch (dialog, ACS_RTEE);
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if (title != NULL && strlen(title) >= width-2 ) {
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/* truncate long title -- mec */
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char * title2 = malloc(width-2+1);
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memcpy( title2, title, width-2 );
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title2[width-2] = '\0';
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title = title2;
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}
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if (title != NULL) {
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wattrset (dialog, title_attr);
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mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
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waddstr (dialog, (char *)title);
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waddch (dialog, ' ');
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}
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wattrset (dialog, dialog_attr);
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print_autowrap (dialog, prompt, width - 2, 1, 3);
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/* Draw the input field box */
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box_width = width - 6;
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getyx (dialog, y, x);
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box_y = y + 2;
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box_x = (width - box_width) / 2;
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draw_box (dialog, y + 1, box_x - 1, 3, box_width + 2,
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border_attr, dialog_attr);
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print_buttons(dialog, height, width, 0);
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/* Set up the initial value */
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wmove (dialog, box_y, box_x);
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wattrset (dialog, inputbox_attr);
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if (!init)
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instr[0] = '\0';
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else
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strcpy (instr, init);
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input_x = strlen (instr);
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if (input_x >= box_width) {
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scroll = input_x - box_width + 1;
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input_x = box_width - 1;
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for (i = 0; i < box_width - 1; i++)
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waddch (dialog, instr[scroll + i]);
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} else
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waddstr (dialog, instr);
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wmove (dialog, box_y, box_x + input_x);
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wrefresh (dialog);
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while (key != ESC) {
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key = wgetch (dialog);
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if (button == -1) { /* Input box selected */
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switch (key) {
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case TAB:
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case KEY_UP:
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case KEY_DOWN:
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break;
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case KEY_LEFT:
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continue;
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case KEY_RIGHT:
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continue;
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case KEY_BACKSPACE:
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case 127:
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if (input_x || scroll) {
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wattrset (dialog, inputbox_attr);
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if (!input_x) {
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scroll = scroll < box_width - 1 ?
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0 : scroll - (box_width - 1);
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wmove (dialog, box_y, box_x);
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for (i = 0; i < box_width; i++)
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waddch (dialog, instr[scroll + input_x + i] ?
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instr[scroll + input_x + i] : ' ');
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input_x = strlen (instr) - scroll;
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} else
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input_x--;
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instr[scroll + input_x] = '\0';
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mvwaddch (dialog, box_y, input_x + box_x, ' ');
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wmove (dialog, box_y, input_x + box_x);
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wrefresh (dialog);
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}
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continue;
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default:
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if (key < 0x100 && isprint (key)) {
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if (scroll + input_x < MAX_LEN) {
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wattrset (dialog, inputbox_attr);
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instr[scroll + input_x] = key;
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instr[scroll + input_x + 1] = '\0';
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if (input_x == box_width - 1) {
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scroll++;
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wmove (dialog, box_y, box_x);
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for (i = 0; i < box_width - 1; i++)
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waddch (dialog, instr[scroll + i]);
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} else {
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wmove (dialog, box_y, input_x++ + box_x);
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waddch (dialog, key);
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}
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wrefresh (dialog);
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} else
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flash (); /* Alarm user about overflow */
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continue;
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}
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}
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}
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switch (key) {
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case 'O':
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case 'o':
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delwin (dialog);
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return 0;
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case 'H':
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case 'h':
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delwin (dialog);
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return 1;
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case KEY_UP:
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case KEY_LEFT:
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switch (button) {
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case -1:
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button = 1; /* Indicates "Cancel" button is selected */
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print_buttons(dialog, height, width, 1);
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break;
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case 0:
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button = -1; /* Indicates input box is selected */
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print_buttons(dialog, height, width, 0);
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wmove (dialog, box_y, box_x + input_x);
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wrefresh (dialog);
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break;
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case 1:
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button = 0; /* Indicates "OK" button is selected */
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print_buttons(dialog, height, width, 0);
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break;
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}
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break;
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case TAB:
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case KEY_DOWN:
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case KEY_RIGHT:
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switch (button) {
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case -1:
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button = 0; /* Indicates "OK" button is selected */
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print_buttons(dialog, height, width, 0);
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break;
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case 0:
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button = 1; /* Indicates "Cancel" button is selected */
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print_buttons(dialog, height, width, 1);
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break;
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case 1:
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button = -1; /* Indicates input box is selected */
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print_buttons(dialog, height, width, 0);
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wmove (dialog, box_y, box_x + input_x);
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wrefresh (dialog);
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break;
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}
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break;
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case ' ':
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case '\n':
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delwin (dialog);
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return (button == -1 ? 0 : button);
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case 'X':
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case 'x':
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key = ESC;
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case ESC:
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break;
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}
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}
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delwin (dialog);
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return -1; /* ESC pressed */
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}
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