1 files changed, 113 insertions, 0 deletions
diff --git a/gnu/usr.bin/dialog/yesno.c b/gnu/usr.bin/dialog/yesno.c
new file mode 100644
index 0000000..7a9806d
--- /dev/null
+++ b/gnu/usr.bin/dialog/yesno.c
@@ -0,0 +1,113 @@
+/*
+ *  yesno.c -- implements the yes/no box
+ *
+ *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *
+ *  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"
+
+
+/*
+ * Display a dialog box with two buttons - Yes and No
+ */
+int dialog_yesno(unsigned char *title, unsigned char * prompt, int height, int width)
+{
+  int i, x, y, key = 0, button = 0;
+  WINDOW *dialog;
+
+  /* center dialog box on screen */
+  x = (COLS - width)/2;
+  y = (LINES - height)/2;
+  
+#ifdef HAVE_NCURSES
+  if (use_shadow)
+    draw_shadow(stdscr, y, x, height, width);
+#endif
+  dialog = newwin(height, width, y, x);
+  keypad(dialog, TRUE);
+
+  draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+  wattrset(dialog, border_attr);
+  wmove(dialog, height-3, 0);
+  waddch(dialog, ACS_LTEE);
+  for (i = 0; i < width-2; i++)
+    waddch(dialog, ACS_HLINE);
+  wattrset(dialog, dialog_attr);
+  waddch(dialog, ACS_RTEE);
+  wmove(dialog, height-2, 1);
+  for (i = 0; i < width-2; i++)
+    waddch(dialog, ' ');
+
+  if (title != NULL) {
+    wattrset(dialog, title_attr);
+    wmove(dialog, 0, (width - strlen(title))/2 - 1);
+    waddch(dialog, ' ');
+    waddstr(dialog, title);
+    waddch(dialog, ' ');
+  }
+  wattrset(dialog, dialog_attr);
+  print_autowrap(dialog, prompt, width, 1, 3);
+
+  x = width/2-10;
+  y = height-2;
+  print_button(dialog, "  No  ", y, x+13, FALSE);
+  print_button(dialog, " Yes ", y, x, TRUE);
+  wrefresh(dialog);
+
+  while (key != ESC) {
+    key = wgetch(dialog);
+    switch (key) {
+      case 'Y':
+      case 'y':
+        delwin(dialog);
+        return 0;
+      case 'N':
+      case 'n':
+        delwin(dialog);
+        return 1;
+      case KEY_BTAB:
+      case TAB:
+      case KEY_UP:
+      case KEY_DOWN:
+      case KEY_LEFT:
+      case KEY_RIGHT:
+        if (!button) {
+          button = 1;    /* Indicates "No" button is selected */
+          print_button(dialog, " Yes ", y, x, FALSE);
+          print_button(dialog, "  No  ", y, x+13, TRUE);
+        }
+        else {
+          button = 0;    /* Indicates "Yes" button is selected */
+          print_button(dialog, "  No  ", y, x+13, FALSE);
+          print_button(dialog, " Yes ", y, x, TRUE);
+        }
+        wrefresh(dialog);
+        break;
+      case ' ':
+      case '\n':
+        delwin(dialog);
+        return button;
+      case ESC:
+        break;
+    }
+  }
+
+  delwin(dialog);
+  return -1;    /* ESC pressed */
+}
+/* End of dialog_yesno() */