#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""GUI for recursive calculation of the size of all files in a directory tree.
"""

import sys
from PySide import QtGui
from recursive_func import get_total_size

class Form(QtGui.QDialog):
  """Main Window.
  """
  def __init__(self, parent=None):
    super(Form, self).__init__(parent)
    self.setWindowTitle(u"Recurser")
    self.path = QtGui.QLineEdit(u"<textentry>")
    self.button = QtGui.QPushButton(u"Calculate Size")
    self.res = QtGui.QLabel(u"Result")
    layout = QtGui.QVBoxLayout()
    layout.addWidget(self.path)
    layout.addWidget(self.button)
    layout.addWidget(self.res)
    self.setLayout(layout)
    self.button.clicked.connect(self.calculate)

  def calculate(self):
    """Display the calculated result.
    """
    path = self.path.text()
    self.res.setText(u'Total: %d' % get_total_size(path))

def show_app():
  """Display the window.
  """
  app = QtGui.QApplication(sys.argv)
  form = Form()
  form.show()
  sys.exit(app.exec_())

if __name__ == '__main__':
  show_app()