created ninjahelper

[matthijs/upstream/backupninja.git] / handlers / easydialog.sh

diff --git a/handlers/easydialog.sh b/handlers/easydialog.sh
new file mode 100644 (file)
index 0000000..ce7d31e
--- /dev/null
+++ b/handlers/easydialog.sh
@@ -0,0 +1,182 @@
+#!/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 $HELP --backtitle "$BACKTITLE" --title "$title" \
+        $box "$text" $HEIGHT $WIDTH 10 \
+       "$@" 2> $temp
+    local status=$?
+    [ $status = 0 ] && REPLY=$(_listReplyHook $temp $box)
+    rm -f $temp
+    return $status
+}
+
+menuBox() {
+    _genericListBox --menu "$@"
+}
+
+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
+   for ((i=0; i < $_form_items ; i++)); do
+      label=${_form_labels[$i]}
+      text=${_form_text[$i]}
+      if [ "$text" == "" ]; then
+         text='_empty_'
+      fi
+      form=`echo -e "$form $label $xpos 1" $text "$xpos $max_length 30 30"`
+      let "xpos += _form_gap"
+   done
+
+   $DIALOG --form "$_form_title" 0 0 20 $form 2> $temp
+   local status=$?
+   [ $status = 0 ] && REPLY=$(cat $temp)
+   rm -f $temp
+   return $status
+}