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robrene

Member

Registered: 2009-04-16

Posts: 168

[PyGTK + GtkBuilder] Dynamically add items to ComboBox

I'm writing a little python+gtk application that allows for some easy customisation of the icon theme. I used Glade3 to create a GtkBuilder project, and I load it using gtk.Builder. I'm running into some trouble trying to populate my comboboxes though...

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

#      3.141592653589793238462643383279
#    5028841971693993751058209749445923
#   07816406286208998628034825342117067
#   9821    48086         5132
#  823      06647        09384
# 46        09550        58223
# 17        25359        4081
#           2848         1117
#           4502         8410
#           2701         9385
#          21105        55964
#          46229        48954
#          9303         81964
#          4288         10975
#         66593         34461            -con
#        284756         48233
#        78678          31652        71
#       2019091         456485       66
#      9234603           48610454326648
#     2133936            0726024914127
#     3724587             00660631558
#     817488               152092096


import sys
import os
import gtk


class Picon:

    def on_MainWindow_destroy(self, widget, data=None):

        gtk.main_quit()


    def on_CloseButton_clicked(self, button, data=None):

        gtk.main_quit()


    def on_AboutButton_clicked(self, button, data=None):

        if self.about_dialog:
            self.about_dialog.present()
            return

        authors = [ "Rob (robrene) Spoel <robspoel@googlemail.com>" ]

        about_dialog = gtk.AboutDialog()
        about_dialog.set_transient_for(self.window)
        about_dialog.set_destroy_with_parent(True)
        about_dialog.set_name("π-con")
        about_dialog.set_version("0.1")
        about_dialog.set_copyright("Copyright © 2009 Rob Spoel")
        about_dialog.set_comments("A tool to tweak the FIXME icon theme.")
        about_dialog.set_authors(authors)
        about_dialog.set_logo_icon_name("picon")

        def close(dialog, response, editor):
            picon.about_dialog = None
            dialog.destroy()

        def delete_event(dialog, event, editor):
            picon.about_dialog = None
            return True

        about_dialog.connect("response", close, self)
        about_dialog.connect("delete-event", delete_event, self)

        self.about_dialog = about_dialog
        about_dialog.show()


    def init_folders(self):

        cbox = self.builder.get_object("FolderCBox")
        cbox.append_text("Current (no change)")


    def init_brands(self):

        cbox = self.builder.get_object("BrandCBox")
        cbox.append_text("Current (no change)")


    def __init__(self):

        self.about_dialog = None

        try:
            self.builder = gtk.Builder()
            self.builder.add_from_file("picon.glade")
        except:
            self.error_message = "Couldn't load 'picon.glade'"
            sys.exit(1)

        self.window = self.builder.get_object("MainWindow")

        self.builder.connect_signals(self)

        self.init_folders()
        self.init_brands()


    def main(self):

        self.window.show()
        gtk.main()


if __name__ == "__main__":
    picon = Picon()
    picon.main()

I once wrote a PyGTK application using libglade a long time ago, and this was how it was done (using gtk.glade.XML.get_widget() instead of gtk.Builder.get_object()). However, now I get the following warnings:

[rob@rob-thinkpad Purity Ultimate]$ ./picon.py 
./picon.py:81: GtkWarning: gtk_combo_box_append_text: assertion `GTK_IS_LIST_STORE (combo_box->priv->model)' failed
  cbox.append_text("Current (no change)")
./picon.py:87: GtkWarning: gtk_combo_box_append_text: assertion `GTK_IS_LIST_STORE (combo_box->priv->model)' failed
  cbox.append_text("Current (no change)")

I'm not sure what it means, nor how to solve it... What is the easiest way to just populate the comboboxes with some text of my choosing?

---

linkmaster03

Member

Registered: 2008-12-27

Posts: 269

Re: [PyGTK + GtkBuilder] Dynamically add items to ComboBox

self.combobox = builder.get_object('combobox')
cell = gtk.CellRendererText()
self.combobox.pack_start(cell)
self.combobox.add_attribute(cell, 'text', 0)



self.combobox.append_text("Option 1")
self.combobox.append_text("Option 2")

Unfortunately, you cannot add CellRenderers through Glade, so that's why you have to do it manually in the code.

Last edited by linkmaster03 (2009-11-29 03:17:56)

robrene

Member

Registered: 2009-04-16

Posts: 168

Re: [PyGTK + GtkBuilder] Dynamically add items to ComboBox

I'M afraid that didn't fix it, I still get the same warning, and the combobox is still empty. I did some more reading, and I believe I may have to add some sort of 'model', whatever that may be. I see Glade3 also has an option called 'ComboBox model' in the widget properties.

What I also found out is that '(...) the "model" property which (...) is acting as data source for the combo_box (...)' : http://www.pygtk.org/docs/pygtk/class-g … -get-model

There is also a method called set_model, but I don't really know what to feed it and how I can modify that so that it holds the options I want...

---

robrene

Member

Registered: 2009-04-16

Posts: 168

Re: [PyGTK + GtkBuilder] Dynamically add items to ComboBox

Alright, after some more trial and error I finally managed to get it working, I'm posting the relevant code here if anyone ever stumbles accross the same problem:

cbox = builder.get_object("my_combobox")

store = gtk.ListStore(gobject.TYPE_STRING)
store.append(["foobar"])
cbox.set_model(store)

cell = gtk.CellRendererText()
cbox.pack_start(cell, True)
cbox.add_attribute(cell, 'text', 0)

cbox.set_active(0)

Last edited by robrene (2009-11-29 12:58:30)

---

linkmaster03

Member

Registered: 2008-12-27

Posts: 269

Re: [PyGTK + GtkBuilder] Dynamically add items to ComboBox

Yes, I forgot to mention that you need a ListStore. You can create this, and link it to the combo box, through Glade. You can also set the ListStore type through Glade:

Sorry I forgot to point that out; I was only looking at my code.