initial release

Author: marwano

LICENSE

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+Copyright (c) 2013 by Marwan Alsabbagh and contributors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the following
+  disclaimer in the documentation and/or other materials provided
+  with the distribution.
+
+* The names of the contributors may not be used to endorse or
+  promote products derived from this software without specific
+  prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

whiptail.py

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+# whiptail.py - Use whiptail to display dialog boxes from shell scripts
+# Copyright (C) 2013 Marwan Alsabbagh
+# license: BSD, see LICENSE for more details.
+
+import sys
+import shlex
+from utile import save_args, flatten
+from subprocess import Popen, PIPE
+from collections import namedtuple
+
+Response = namedtuple('Response', 'returncode value')
+
+
+class Whiptail(object):
+    def __init__(self, title='', backtitle='', height=10, width=50, auto_exit=True):
+        save_args(self, vars())
+
+    def run(self, control, msg, extra=(), exit_on=(1, 255)):
+        cmd = ['whiptail', '--title', self.title, '--backtitle', self.backtitle,
+               '--' + control, msg, str(self.height), str(self.width)] + list(extra)
+        p = Popen(cmd, stderr=PIPE)
+        out, err = p.communicate()
+        if self.auto_exit and p.returncode in exit_on:
+            print 'User cancelled operation.'
+            sys.exit(p.returncode)
+        return Response(p.returncode, err)
+
+    def prompt(self, msg, default='', password=False):
+        control = 'passwordbox' if password else 'inputbox'
+        return self.run(control, msg, [default]).value
+
+    def confirm(self, msg, default='yes'):
+        defaultno = '--defaultno' if default == 'no' else ''
+        return self.run('yesno', msg, [defaultno], [255]).returncode == 0
+
+    def alert(self, msg):
+        self.run('msgbox', msg)
+
+    def view_file(self, path):
+        self.run('textbox', path, ['--scrolltext'])
+
+    def calc_height(self, msg):
+        height_offset = 8 if msg else 7
+        return [str(self.height - height_offset)]
+
+    def menu(self, msg='', items=(), prefix=' - '):
+        if isinstance(items[0], basestring):
+            items = [(i, '') for i in items]
+        else:
+            items = [(k, prefix + v) for k, v in items]
+        extra = self.calc_height(msg) + flatten(items)
+        return self.run('menu', msg, extra).value
+
+    def showlist(self, control, msg, items, prefix):
+        if isinstance(items[0], basestring):
+            items = [(i, '', 'OFF') for i in items]
+        else:
+            items = [(k, prefix + v, s) for k, v, s in items]
+        extra = self.calc_height(msg) + flatten(items)
+        return shlex.split(self.run(control, msg, extra).value)
+
+    def radiolist(self, msg='', items=(), prefix=' - '):
+        return self.showlist('radiolist', msg, items, prefix)
+
+    def checklist(self, msg='', items=(), prefix=' - '):
+        return self.showlist('checklist', msg, items, prefix)