def __init__(self, parent, notebook):
wx.Panel.__init__(self, notebook)
self._parent = parent
main_sizer = wx.BoxSizer(wx.VERTICAL)
self.SetSizer(main_sizer)
self._format = parent.format
self.__view = None
self._printing = Printing(self)
box = wx.BoxSizer(wx.HORIZONTAL)
box.Add(self._chooser())
box.Add(self._print_button(), 1, wx.ALIGN_CENTER_VERTICAL | wx.EXPAND)
self.Sizer.Add(box)
notebook.AddPage(self, "Preview")
