#!/bin/env python

# -*- coding: utf-8 -*-

# ------------------------------------------------------------

# launch_dialog.pyw

# 

# let the user launch an app in a vm

#

# Autor: Oliver Maurhart, <oliver.maurhart@ait.ac.at>

#

# Copyright 2013-2014 X-Net and AIT Austrian Institute of Technology

# 

# 

#     X-Net Services GmbH

#     Elisabethstrasse 1

#     4020 Linz

#     AUSTRIA

#     https://www.x-net.at

# 

#     AIT Austrian Institute of Technology

#     Donau City Strasse 1

#     1220 Wien

#     AUSTRIA

#     http://www.ait.ac.at

# 

# 

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

# 

#    http://www.apache.org/licenses/LICENSE-2.0

# 

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# ------------------------------------------------------------

# ------------------------------------------------------------

# imports

import sys

from PyQt4 import QtCore

from PyQt4 import QtGui

from ui_LaunchDialog import Ui_LaunchDialog 

from about_dialog import AboutDialog

# ------------------------------------------------------------

# code

class LaunchDialog(QtGui.QDialog):

    """A dialog for letting the user launch an arbitrary app in a vm"""

    def __init__(self, vms, apps):

        QtGui.QDialog.__init__(self)

        # setup the user interface

        self.ui = Ui_LaunchDialog()

        self.ui.setupUi(self)

        for v in vms: 

            self.ui.cmbVM.addItem(v)

        for a in apps: 

            self.ui.cmbApplication.addItem(a)

        # local members

        self._about_dialog = AboutDialog()

        # connectors

        self.ui.btnAbout.clicked.connect(self.clicked_about)

        self.ui.btnCancel.clicked.connect(self.reject)

        self.ui.btnOk.clicked.connect(self.clicked_ok)

        # positionate ourself central

        screen = QtGui.QDesktopWidget().screenGeometry()

        size = self.geometry()

        self.move((screen.width() - size.width()) / 2, (screen.height() - size.height()) / 2)

    def clicked_about(self):

        """About button has been clicked."""

        self._about_dialog.show()

    def clicked_ok(self):

        """Ok button has been clicked."""

        sys.stdout.write('{ ')

        sys.stdout.write('"application": "')

        sys.stdout.write(self.app)

        sys.stdout.write('", ')

        sys.stdout.write('"vm": "')

        sys.stdout.write(self.vm)

        sys.stdout.write('" ')

        sys.stdout.write('}\n')

        self.accept()

    @property

    def app(self):

        """The application of the user."""

        return str(self.ui.cmbApplication.currentText())

    @property

    def vm(self):

        """The application of the user."""

        return str(self.ui.cmbVM.currentText())

if __name__ == "__main__":

    a = QtGui.QApplication(sys.argv)

    d = LaunchDialog(['SecurityDVM0', 'SecurityDVM1'], ['/usr/bin/xterm', '/usr/bin/xclock', '/usr/bin/xeyes'])

    d.show()

    sys.exit(a.exec_())