Re: [gdm-list] [gdm-2.30] disabled "Languages:", "Keyborad Layout:" and "Sessions:" widgets on greeter panel

[Jacek Migacz <jacekmigacz ncomputing com>]

 On 08/25/2010 03:50 PM, Jacek Migacz wrote:
>    I'm running /gui/simple-greeter/test-greeter-panel and sessions
> drop-down is disabled.
> While I'm trying to debug sooner or later i getting lost in the forest
> of preprocessor macros.
> However I could see he is reading .desktop definitions and "gnome" label
> was visible at some point.
> Stracing does'n help me with it as well.
>
> Only traces i have (not not necessarily useful) are:
>
> ** (test-greeter-panel:22845): DEBUG:
> "/usr/share/xsessions/guest-restricted.desktop" is hidden or contains
> non-executable TryExec program
>
> ** (test-greeter-panel:22845): DEBUG:
> "/usr/share/xsessions/une-guest-restricted.desktop" is hidden or
> contains non-executable TryExec program
>
> ** (test-greeter-panel:22845): DEBUG:
> "/usr/share/xsessions/une-efl-guest-restricted.desktop" is hidden or
> contains non-executable TryExec program
>
> Question is why "select widget" is shaded?

The answer is - because it's unsensitived by 
gdm_option_widget_init(GdmOptionWidget *).

/* We disable the combo box until it has a default */
gtk_widget_set_sensitive (widget->priv->items_combo_box, FALSE);

However what is "the dafault"?
g_signal_connect (widget, "notify::default-item", G_CALLBACK 
(on_default_item_changed), NULL);
Well, when the widget is notified::default-item it should became sensiitive.
Who triggers that signal?