287 lines
6.4 KiB
C
287 lines
6.4 KiB
C
/*
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* $Id: msgbox.c,v 1.38 2004/11/18 21:57:00 tom Exp $
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*
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* msgbox.c -- implements the message box and info box
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*
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* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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* and: Thomas E. Dickey
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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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/*
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* Display the message in a scrollable window. Actually the way it works is
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* that we create a "tall" window of the proper width, let the text wrap within
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* that, and copy a slice of the result to the dialog.
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*
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* It works for ncurses. Other curses implementations show only blanks (Tru64)
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* or garbage (NetBSD).
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*/
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static int
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show_message(WINDOW *dialog,
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const char *prompt,
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int offset,
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int page,
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int width,
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int pauseopt)
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{
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#ifdef NCURSES_VERSION
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if (pauseopt) {
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int wide = width - (2 * MARGIN);
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int high = LINES;
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int y, x;
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int len;
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int percent;
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WINDOW *dummy;
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char buffer[5];
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#if defined(NCURSES_VERSION_PATCH) && NCURSES_VERSION_PATCH >= 20040417
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/*
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* If we're not limited by the screensize, allow text to possibly be
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* one character per line.
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*/
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if ((len = strlen(prompt)) > high)
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high = len;
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#endif
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dummy = newwin(high, width, 0, 0);
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wbkgdset(dummy, dialog_attr | ' ');
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wattrset(dummy, dialog_attr);
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werase(dummy);
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dlg_print_autowrap(dummy, prompt, high, wide);
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getyx(dummy, y, x);
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copywin(dummy, /* srcwin */
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dialog, /* dstwin */
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offset + MARGIN, /* sminrow */
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MARGIN, /* smincol */
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MARGIN, /* dminrow */
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MARGIN, /* dmincol */
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page, /* dmaxrow */
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wide, /* dmaxcol */
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FALSE);
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delwin(dummy);
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/* if the text is incomplete, or we have scrolled, show the percentage */
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if (y > 0 && wide > 4) {
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percent = ((page + offset) * 100.0 / y);
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if (percent < 0)
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percent = 0;
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if (percent > 100)
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percent = 100;
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if (offset != 0 || percent != 100) {
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(void) wattrset(dialog, position_indicator_attr);
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(void) wmove(dialog, MARGIN + page, wide - 4);
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(void) sprintf(buffer, "%d%%", percent);
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(void) waddstr(dialog, buffer);
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if ((len = strlen(buffer)) < 4) {
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wattrset(dialog, border_attr);
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whline(dialog, ACS_HLINE, 4 - len);
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}
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}
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}
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return (y - page);
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}
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#endif
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(void) offset;
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wattrset(dialog, dialog_attr);
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dlg_print_autowrap(dialog, prompt, page + 1 + (3 * MARGIN), width);
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return 0;
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}
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/*
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* Display a message box. Program will pause and display an "OK" button
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* if the parameter 'pauseopt' is non-zero.
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*/
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int
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dialog_msgbox(const char *title, const char *cprompt, int height, int width,
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int pauseopt)
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{
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int x, y, last = 0, page;
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int key = 0, fkey;
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WINDOW *dialog = 0;
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char *prompt = dlg_strclone(cprompt);
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const char **buttons = dlg_ok_label();
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int offset = 0;
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bool show = TRUE;
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#ifdef KEY_RESIZE
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int req_high = height;
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int req_wide = width;
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restart:
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#endif
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dlg_tab_correct_str(prompt);
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dlg_auto_size(title, prompt, &height, &width,
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(pauseopt == 1 ? 2 : 0),
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(pauseopt == 1 ? 12 : 0));
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dlg_print_size(height, width);
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dlg_ctl_size(height, width);
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x = dlg_box_x_ordinate(width);
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y = dlg_box_y_ordinate(height);
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#ifdef KEY_RESIZE
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if (dialog != 0) {
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(void) wresize(dialog, height, width);
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(void) mvwin(dialog, y, x);
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(void) refresh();
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} else
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#endif
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dialog = dlg_new_window(height, width, y, x);
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page = height - (1 + 3 * MARGIN);
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dlg_mouse_setbase(x, y);
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dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
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dlg_draw_title(dialog, title);
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wattrset(dialog, dialog_attr);
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if (pauseopt) {
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bool done = FALSE;
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dlg_draw_bottom_box(dialog);
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mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n');
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dlg_draw_buttons(dialog, height - 2, 0, buttons, FALSE, FALSE, width);
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while (!done) {
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if (show) {
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getyx(dialog, y, x);
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last = show_message(dialog, prompt, offset, page, width, pauseopt);
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wmove(dialog, y, x);
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wrefresh(dialog);
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show = FALSE;
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}
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key = dlg_mouse_wgetch(dialog, &fkey);
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if (!fkey) {
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fkey = TRUE;
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switch (key) {
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case ESC:
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done = TRUE;
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continue;
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case ' ':
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case '\n':
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case '\r':
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key = KEY_ENTER;
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break;
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case 'F':
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case 'f':
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key = KEY_NPAGE;
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break;
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case 'B':
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case 'b':
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key = KEY_PPAGE;
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break;
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case 'g':
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key = KEY_HOME;
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break;
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case 'G':
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key = KEY_END;
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break;
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case 'K':
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case 'k':
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key = KEY_UP;
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break;
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case 'J':
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case 'j':
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key = KEY_DOWN;
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break;
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default:
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if (dlg_char_to_button(key, buttons) == 0) {
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key = KEY_ENTER;
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} else {
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fkey = FALSE;
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}
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break;
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}
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}
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if (fkey) {
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switch (key) {
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#ifdef KEY_RESIZE
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case KEY_RESIZE:
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dlg_clear();
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height = req_high;
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width = req_wide;
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goto restart;
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#endif
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case KEY_ENTER:
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done = TRUE;
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break;
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case KEY_HOME:
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if (offset > 0) {
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offset = 0;
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show = TRUE;
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}
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break;
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case KEY_END:
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if (offset < last) {
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offset = last;
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show = TRUE;
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}
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break;
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case KEY_UP:
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if (offset > 0) {
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--offset;
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show = TRUE;
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}
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break;
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case KEY_DOWN:
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if (offset < last) {
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++offset;
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show = TRUE;
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}
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break;
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case KEY_PPAGE:
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if (offset > 0) {
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offset -= page;
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if (offset < 0)
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offset = 0;
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show = TRUE;
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}
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break;
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case KEY_NPAGE:
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if (offset < last) {
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offset += page;
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if (offset > last)
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offset = last;
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show = TRUE;
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}
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break;
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default:
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if (key >= M_EVENT)
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done = TRUE;
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else
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beep();
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break;
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}
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} else {
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beep();
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}
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}
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} else {
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show_message(dialog, prompt, offset, page, width, pauseopt);
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key = '\n';
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wrefresh(dialog);
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}
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dlg_del_window(dialog);
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dlg_mouse_free_regions();
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free(prompt);
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return (key == ESC) ? DLG_EXIT_ESC : DLG_EXIT_OK;
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}
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