[Glade-users] liststore with GObjects

[alexey.kurochkin at pathfinderlwd.com (Alexey Kurochkin)]

On Thu, 2009-08-20 at 12:04 -0400, Tristan Van Berkom wrote:
> On Thu, Aug 20, 2009 at 11:54 AM, Alexey
> Kurochkin<alexey.kurochkin at pathfinderlwd.com> wrote:
> [...]
> > > Yes, note that GObjects in the liststore are be passed by
> > > reference (i.e. the value of an object column is the id/name
> > > of the referred object in the file... the same object can show
> > > up in multiple rows and columns...).
> >
> > If you mean replacing <col id="0" /> which Glade generates for GObject
> > column with something like this:
> >
> > <col id="0">adjustment1</col>
> >
> > then it does not work. It segfaults... :(
>
> Does it ? try manually placing the adjustment definition /before/ the
> liststore definition.
>
> As a liststore can refer to many different types I doubt its a good
> policy to force all
> reffered objects to be before the liststore, so, if the above formula
> successfully
> works around the segfault, I would call it a bug in GTK+ (that the
> liststore does
> not wait for the "finished" signal to resolve referred objects by id).

Nope, the same result. If you care to look, attached is a simple test. 

By the way, I have gtk+2.14.5 source here and do not see liststore
implementing anything called "finished", only custom_tag_start and
custom_tag_end.
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#include <gtk/gtk.h>

int main (int argc, char **argv)
{
        GtkBuilder *builder;
        GObject *mylist;
        GObject *myadj;
        GtkTreeIter iter;

        gtk_init (&argc, &argv);
        builder = gtk_builder_new();
        gtk_builder_add_from_file(builder, "list.ui", NULL);
        mylist = gtk_builder_get_object(builder,"liststore1");
        myadj = gtk_builder_get_object(builder,"adjustment1");
        g_object_ref (mylist);
        g_object_ref (myadj);
        g_object_unref (builder);

        if (GTK_IS_LIST_STORE (mylist))
        {
                g_message ("List created successfully");
                if (GTK_IS_ADJUSTMENT (myadj))
                        g_message ("Adjustment created successfully");
                else
                        g_warning ("Adjustment was not created");
                if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (mylist), &iter))
                {
                        GObject *myobj;
                        gchar *mytext;

                        do
                        {
                                gtk_tree_model_get (GTK_TREE_MODEL (mylist), &iter,
                                        0, &myobj,
                                        1, &mytext,
                                        -1);
                                if (myobj)
                                {
                                        g_message ("Object described as %s is %s", mytext, GTK_IS_ADJUSTMENT 
(myobj) ? "indeed adjustment" : "actually nonsense");
                                        g_object_unref (myobj);
                                }
                                else
                                        g_warning ("Object described as %s is empty", mytext);
                                g_free (mytext);
                        } while (gtk_tree_model_iter_next (GTK_TREE_MODEL (mylist), &iter));
                }
                else
                        g_warning ("List is empty");
        }
        else
                g_warning ("List was not created at all");
//      gtk_main();
        return 0;
}