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#!/bin/bash
# copyright 2002 lmoore@tump.com under the terms of the GNU LGPL.
# whiptail has trouble being called in the foo=$(whiptail ...) fashion for
# some reason. this is very annoying. this means that we need to use
# temporary files to store the answers from the input and list based boxes
# and then read the answers into a REPLY variable. that just really
# stinks, oh well, that's what you get when you have a weak link
# implementation...
#
# inputBox and passwordBox could be refactored to use a common function
test -z "$WIDTH" && WIDTH=0
test -z "$HEIGHT" && HEIGHT=0
BACKTITLE=""
DIALOG=dialog
HELP=
setApplicationTitle() {
BACKTITLE=$*
}
setHelp() {
HELP="$@"
}
setDimension() {
WIDTH=$1
HEIGHT=$2
}
booleanBox() {
$DIALOG --backtitle "$BACKTITLE" --title "$1" \
--yesno "$2" $HEIGHT $WIDTH
}
msgBox() {
$DIALOG --backtitle "$BACKTITLE" --title "$1" \
--msgbox "$2" $HEIGHT $WIDTH
}
gaugeBox() {
$DIALOG --backtitle "$BACKTITLE" --title "$1" \
--gauge "$2" $HEIGHT $WIDTH 0
}
inputBox() {
local temp=$(mktemp -t) || exit 1
trap "rm -f $temp" 0
REPLY=
$DIALOG --backtitle "$BACKTITLE" --title "$1" \
--inputbox "$2" $HEIGHT $WIDTH "$3" 2> $temp
local status=$?
[ $status = 0 ] && REPLY=$(cat $temp)
rm -f $temp
return $status
}
# Xdialog and {dialog,whiptail} use different mechanism to "qoute" the
# values from a checklist. {dialog,whiptail} uses standard double quoting
# while Xdialog uses a "/" as the separator. the slash is arguably better,
# but the double quoting is more standard. anyway, this function can be
# overridden to allow a derived implementation to change it's quoting
# mechanism to the standard double-quoting one. it receives two
# arguements, the file that has the data and the box type.
_listReplyHook() {
cat $1
}
# this is the base implementation of all the list based boxes, it works
# out nicely that way. the real function just passes it's arguments to
# this function with an extra argument specifying the actual box that
# needs to be rendered.
_genericListBox() {
local box=$1
shift 1
local title=$1
local text=$2
shift 2
local temp=$(mktemp -t) || exit 1
trap "rm -f $temp" 0
REPLY=
$DIALOG $HELP $_DEFAULT --backtitle "$BACKTITLE" --title "$title" \
$box "$text" $HEIGHT $WIDTH 10 \
"$@" 2> $temp
local status=$?
[ $status = 0 ] && REPLY=$(_listReplyHook $temp $box)
rm -f $temp
_DEFAULT=
return $status
}
setDefault() {
_DEFAULT="--default-item $1"
}
menuBox() {
_genericListBox --menu "$@"
}
menuBoxHelp() {
HELP="--item-help"
_genericListBox --menu "$@"
status=$?
HELP=
return $status
}
menuBoxHelpFile() {
HELP="--help-button"
_genericListBox --menu "$@"
status=$?
HELP=
return $status
}
checkBox() {
_genericListBox --checklist "$@"
}
radioBox() {
_genericListBox --radiolist "$@"
}
textBox() {
$DIALOG --backtitle "$BACKTITLE" --title "$1" --textbox "$2" $HEIGHT $WIDTH
}
passwordBox() {
local temp=$(mktemp -t) || exit 1
trap "rm -f $temp" 0
REPLY=
$DIALOG --backtitle "$BACKTITLE" --title "$1" \
--passwordbox "$2" $HEIGHT $WIDTH 2> $temp
local status=$?
[ $status = 0 ] && REPLY=$(cat $temp)
rm -f $temp
return $status
}
_form_gap=2
startForm() {
_form_title=$1
_form_items=0
_form_labels=
_form_text=
}
formItem() {
_form_labels[$_form_items]=$1
_form_text[$_form_items]=$2
let "_form_items += 1"
}
displayForm() {
local temp=$(mktemp -t) || exit 1
max_length=0
for ((i=0; i < ${#_form_labels[@]} ; i++)); do
label=${_form_labels[$i]}
length=`expr length $label`
if [ $length -gt $max_length ]; then
max_length=$length
fi
done
let "max_length += 2"
local form=
local xpos=1
(
echo -n -e "--form '$_form_title' 0 0 20"
for ((i=0; i < $_form_items ; i++)); do
label=${_form_labels[$i]}
text=${_form_text[$i]}
# if [ "$text" == "" ]; then
# text='_empty_'
# fi
echo -n -e "$form $label $xpos 1 '$text' $xpos $max_length 30 30"
let "xpos += _form_gap"
done
) | xargs $DIALOG 2> $temp
local status=$?
[ $status = 0 ] && REPLY=`cat $temp`
rm -f $temp
return $status
}
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