Question to Gtk App Devel list

opts.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# opts.py
#
# Copyright (C) 2015 Germán A. Racca
# E-Mail: <gracca[AT]gmail[DOT]com>
# License: GPLv3+


from gi.repository import Gtk


#############
## C L A S S
############################
class Coor2MASS(Gtk.Dialog):
    """Options for selecting Coordinates"""

    def __init__(self, parent):
        """Initialize the window"""
        Gtk.Dialog.__init__(self, "Select columns to retrieve:", parent, 0,
                            (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
                             Gtk.STOCK_OK, Gtk.ResponseType.OK))
        self.set_modal(True)

        # create a grid
        self.grid = Gtk.Grid(column_homogeneous=True,
                             column_spacing=10,
                             row_spacing=10)

        # create check buttons
        self.btn_ra = Gtk.CheckButton(label="RAJ2000 [Right ascension (J2000)]")
        self.btn_ra.set_active(True)
        self.grid.add(self.btn_ra)

        self.btn_de = Gtk.CheckButton(label="DEJ2000 [Declination (J2000)]")
        self.btn_de.set_active(True)
        self.grid.attach_next_to(self.btn_de, self.btn_ra,
                                 Gtk.PositionType.BOTTOM, 1, 1)

        self.btn_2m = Gtk.CheckButton(label="2MASS [Source designation]")
        self.grid.attach_next_to(self.btn_2m, self.btn_de,
                                 Gtk.PositionType.BOTTOM, 1, 1)

        box = self.get_content_area()
        box.add(self.grid)
        self.show_all()

q2MASS.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# q2MASS.py
#
# Copyright (C) 2015 Germán A. Racca
# E-Mail: <gracca[AT]gmail[DOT]com>
# License: GPLv3+

__author__ = "Germán A. Racca"
__copyright__ = "Copyright (C) 2015, Germán A. Racca"
__email__ = "gracca@gmail.com"
__license__ = "GPLv3+"
__version__ = "0.1"


## REMOVE this when finished ###
import sys                     #
sys.dont_write_bytecode = True #
################################

from gi.repository import Gtk
from opts import Coor2MASS


#############
## C L A S S
#############################
class Query2MASS(Gtk.Window):
    """Gtk+ interface for querying the 2MASS Point Source Catalog"""

    def __init__(self):
        """Initialize the window"""
        Gtk.Window.__init__(self)
        self.set_default_size(800, 600)
        self.set_position(Gtk.WindowPosition.CENTER)
        self.set_border_width(10)

        # add headerbar
        tb = TitleBar()
        titlebar = tb.headerbar()
        self.set_titlebar(titlebar)

        # create a grid
        self.grid = Gtk.Grid(column_homogeneous=True,
                             column_spacing=10,
                             row_spacing=10)
        self.add(self.grid)

        # create a window with scroll bars
        self.scrolledwindow = Gtk.ScrolledWindow()
        self.scrolledwindow.set_policy(Gtk.PolicyType.NEVER,
                                       Gtk.PolicyType.AUTOMATIC)
        self.grid.add(self.scrolledwindow)

        self.show_all()


#############
## C L A S S
###############
class TitleBar:
    """Create the header bar"""

    def __init__(self):
        """Initialize the class"""
        # create left and right headers
        self.left_header = Gtk.Grid()
        self.right_header = Gtk.Grid()

        # left header
        #------------
        self.entry_ra = Gtk.Entry()
        self.entry_ra.set_placeholder_text("Right Ascension")
        self.left_header.add(self.entry_ra)
        self.entry_dec = Gtk.Entry()
        self.entry_dec.set_placeholder_text("Declination")
        self.left_header.attach_next_to(self.entry_dec, self.entry_ra,
                                        Gtk.PositionType.RIGHT, 1, 1)
        self.button_exec = Gtk.Button.new_from_icon_name('system-run-symbolic', 1)
        self.button_exec.set_tooltip_text("Run the query...")
        self.left_header.attach_next_to(self.button_exec, self.entry_dec,
                                        Gtk.PositionType.RIGHT, 1, 1)

        # right header
        #-------------
        # options
        self.button_opts = Gtk.Button.new_from_icon_name('open-menu-symbolic', 1)
        self.button_opts.set_tooltip_text("Select query options...")
        self.button_opts.connect('clicked', self.on_button_opts_clicked)
        self.right_header.add(self.button_opts)

        self.popover_opts = Gtk.Popover()
        self.popover_opts.set_relative_to(self.button_opts)

        self.grid_opts = Gtk.Grid(row_homogeneous=True, row_spacing=5, margin=5)
        self.button_coor = Gtk.Button("Coordinates")
        self.button_coor.connect('clicked', self.on_button_coor_clicked)
        self.button_mags = Gtk.Button("Magnitudes")
        self.button_flag = Gtk.Button("Flags")
        self.grid_opts.add(self.button_coor)
        self.grid_opts.attach_next_to(self.button_mags, self.button_coor,
                                      Gtk.PositionType.BOTTOM, 1, 1)
        self.grid_opts.attach_next_to(self.button_flag, self.button_mags,
                                      Gtk.PositionType.BOTTOM, 1, 1)

        self.popover_opts.add(self.grid_opts)

        # properties
        self.button_prop = Gtk.Button.new_from_icon_name('preferences-other-symbolic', 1)
        self.right_header.attach_next_to(self.button_prop, self.button_opts,
                                         Gtk.PositionType.RIGHT, 1, 1)

    # create the headerbar
    def headerbar(self):
        """The header bar (left and right)"""
        hb = Gtk.HeaderBar()
        hb.set_title("q2MASS")
        hb.set_subtitle("Query the 2MASS PSC")
        hb.set_show_close_button(True)
        hb.pack_start(self.left_header)
        hb.pack_end(self.right_header)
        return hb

    # callback for button opts
    def on_button_opts_clicked(self, widget):
        """Show popover contents for Options"""
        self.popover_opts.show_all()

    # callback for button coor
    def on_button_coor_clicked(self, widget):
        """Close popover and show Coordinates options"""
        self.popover_opts.hide()
        coor = Coor2MASS(self)
        resp = coor.run()
        if resp == Gtk.ResponseType.OK:
            print("Clicked OK!")
        coor.destroy()


def main():
    """Show the window"""
    win = Query2MASS()
    win.connect('delete-event', Gtk.main_quit)
    win.show_all()
    Gtk.main()
    return 0

if __name__ == '__main__':
    main()

 In [1] run q2MASS.py
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/home/german/Documents/Python/myprogs/q2MASS/q2MASS.py in on_button_coor_clicked(self, widget)
    132         """Close popover and show Coordinates options"""
    133         self.popover_opts.hide()
--> 134         coor = Coor2MASS(self)
    135         resp = coor.run()
    136         if resp == Gtk.ResponseType.OK:

/home/german/Documents/Python/myprogs/q2MASS/opts.py in __init__(self, parent)
     22         Gtk.Dialog.__init__(self, "Select columns to retrieve:", parent, 0,
     23                             (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
---> 24                              Gtk.STOCK_OK, Gtk.ResponseType.OK))
     25         self.set_modal(True)
     26 #        self.set_decorated(False)

/usr/lib64/python2.7/site-packages/gi/overrides/Gtk.pyc in __init__(self, *args, **kwargs)
    535                 new_kwargs['destroy_with_parent'] = True
    536 
--> 537         self._init(*args, **new_kwargs)
    538 
    539         if add_buttons:

/usr/lib64/python2.7/site-packages/gi/overrides/__init__.pyc in new_init(self, *args, **kwargs)
    311                 new_kwargs.pop(key)
    312 
--> 313         return super_init_func(self, **new_kwargs)
    314 
    315     return new_init

/usr/lib64/python2.7/site-packages/gi/overrides/__init__.pyc in new_init(self, *args, **kwargs)
    311                 new_kwargs.pop(key)
    312 
--> 313         return super_init_func(self, **new_kwargs)
    314 
    315     return new_init

TypeError: could not convert value for property `transient_for' from instance to GtkWindow