static void
favourite_button_cb(GtkButton* button,
                    gpointer udata)
{
    GtChannelsContainerChild* self = GT_CHANNELS_CONTAINER_CHILD(udata);
    GtChannelsContainerChildPrivate* priv = gt_channels_container_child_get_instance_private(self);

    gt_channel_toggle_favourited(priv->channel);
}
static void
favourite_button_cb(GtkButton* button,
                    gpointer udata)
{
    GtChannelsViewChild* self = GT_CHANNELS_VIEW_CHILD(udata);
    GtChannelsViewChildPrivate* priv = gt_channels_view_child_get_instance_private(self);

    gt_channel_toggle_favourited(priv->channel);
}