#!/bin/bash
#
# $Id$
#
# choice: Display an X dialogue to allow a choice.
# Usage: choice [-t <timeout>] <description> <text>:<ret> [<text>:<ret> ...]
# Example: choice "File exists" "Replace:1" "Back up:2" "No action:0"
#

function usage() {
  echo >&2 "Usage: choice [-t <timeout>] <description> <text>:<ret> [<text>:<ret> ...]"
  exit 100
}

while getopts ":t:" arg; do
  case $arg in
    t) timeout="$OPTARG";;
    *) usage;;
  esac
done
shift $((OPTIND-1))

description="$1"; shift
[ -z "$description" ] && usage
for i in ${1+"$@"}; do
  [ "${i/:/}" = "$i" ] && usage
done

args=
if which zenity 2>/dev/null | grep ^/ &>/dev/null; then
  [ ! -z "$timeout" ] && timeout="--timeout=$timeout"
  for i in ${1+"$@"}; do
    args="$args \"${i/:/\" }"
  done
  ret=$(eval zenity --list --text="\"$description\"" --column=Choice --column=hidden --hide-column=2 --print-column=2 $args $timeout)
  exit $ret
else
  [ ! -z "$timeout" ] && timeout="-timeout $timeout"
  for i in ${1+"$@"}; do
    args="$args,\"$i\""
  done
  args=${args/,/}
  eval exec xmessage -center $timeout -buttons $args "$description"
fi