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GtkListBox: fix model binding refcount issue

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As it is, GtkListBox model binding will work nicely as long as your
create_widget_func returns a floating reference on the newly-created
widget.

If you try to return a full reference (as any higher-level language
would do) then you will leak that reference.

Fix that up by converting any floating references into full references
and then unconditionally releasing the full reference after adding to
the box.

https://bugzilla.gnome.org/show_bug.cgi?id=746893
This commit is contained in:
Ryan Lortie 2015-03-27 11:57:38 -04:00
parent 36baf9207e
commit 6e03e7e80a
1 changed files with 12 additions and 0 deletions
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12
gtk/gtklistbox.c
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@ -3610,9 +3610,21 @@ gtk_list_box_bound_model_changed (GListModel *list,
item = g_list_model_get_item (list, position + i);
widget = priv->create_widget_func (item, priv->create_widget_func_data);
/* We allow the create_widget_func to either return a full
* reference or a floating reference. If we got the floating
* reference, then turn it into a full reference now. That means
* that gtk_list_box_insert() will take another full reference.
* Finally, we'll release this full reference below, leaving only
* the one held by the box.
*/
if (g_object_is_floating (widget))
g_object_ref_sink (widget);
gtk_widget_show_all (widget);
gtk_list_box_insert (box, widget, position + i);
g_object_unref (widget);
g_object_unref (item);
}
}