I invite you to take a look to the source code of my simplest application
http://www.giuspen.com/nautilus-pyextensions/
where as you can see gtk.Builder() is called only once and there's no need
for further calls.
the code that you have to look for:
class GladeWidgetsWrapper:
"""Handles the retrieval of glade widgets"""
def __init__(self, glade_file_path, gui_instance):
try:
self.glade_widgets = gtk.Builder()
self.glade_widgets.set_translation_domain(cons.APP_NAME)
self.glade_widgets.add_from_file(glade_file_path)
self.glade_widgets.connect_signals(gui_instance)
except: print "Failed to load the glade file"
def __getitem__(self, key):
"""Gives us the ability to do: wrapper['widget_name'].action()"""
return self.glade_widgets.get_object(key)
def __getattr__(self, attr):
"""Gives us the ability to do: wrapper.widget_name.action()"""
new_widget = self.glade_widgets.get_object(attr)
if new_widget is None: raise AttributeError, 'Widget %r not found' %
attr
setattr(self, attr, new_widget)
return new_widget
.....
class NautilusPyExtensions:
"""The application's main window"""
def __init__(self, store):
...
# instantiate the Glade Widgets Wrapper
self.glade = GladeWidgetsWrapper(cons.GLADE_PATH +
'nautilus-pyextensions.glade', self)
.....
furthermode in the code you access the widgets with "self.glade.widgetname",
all signals are connected.
Hope this helps.
Giuseppe.
On Mon, Jun 27, 2011 at 17:02, Mac Ryan <quasipe...@gmail.com> wrote:
> I posted the same question on Stack Overflow, but so far it only got 3
> views and no answers... :(
>
> http://stackoverflow.com/questions/6492000
>
> In the design of my program I would like to pass around the
> gkt.Builder() instance to various modules (each of them has
> some of the handlers for managing the GUI), but I found out
> that once the builder is instantiated one can only call the
> connect_signals() method once: if called more than once, any
> call after the second will return None (which would mean:
> all signals have been connected, which is a blatant lie!).
>
> I tried to see if I could understand how/where gtk.Builder
> stores the handler names that are assigned within the Glade
> GUI, in order to write my own method to overcome this limitation,
> but after more than an hour of console experiments I still
> haven't understand where this information is stored.
>
> Is there anybody on the list that is able to advice me? Basically I
> would be happy in any of these scenarios:
>
> * Find a way to re-use the same builder over and over.
> * Find an alternative method to *AUTO-assign* methods of various modules
> as callbacks to GUI-emitted signals (with the GUI being defined in a
> monolithic Glade Builder XML file).
> * Find a way to extract from the from the gtk.Builder (or in some other
> way) the pairs widget-instance<->expected-handler-name as defined in
> the Glade editor.
>
> As for my previous mail on this list: I solved the problem myself:
> what I misunderstood was the correct use of the method dialogue.run().
>
> Thanks in advance for your time,
> /mac
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>
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