Enum object properties.

[Константин Пугин <ria freelander gmail com>]

I want to use g_object_set with enum nick for enum property.

It is possible to do this? (Example is modified properties example from docs):

enum
{
  PROP_0,
  PROP_ENUM,
  N_PROPERTIES
};

typedef enum 

{

    MY_ENUM_FOO,

    MY_ENUM_BAR

} MyEnum;

static GParamSpec *obj_properties[N_PROPERTIES] = { NULL, };

static void
maman_bar_set_property (GObject      *object,
                        guint         property_id,
                        const GValue *value,
                        GParamSpec   *pspec)
{
  MamanBar *self = MAMAN_BAR (object);

  switch (property_id)
    {
    case PROP_ENUM:
      self->priv->enum = g_value_get_enum (value);
      g_print ("enum: %u\n", self->priv->enum);
      break;

    default:
      /* We don't have any other property... */
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
maman_bar_get_property (GObject    *object,
                        guint       property_id,
                        GValue     *value,
                        GParamSpec *pspec)
{
  MamanBar *self = MAMAN_BAR (object);

  switch (property_id)
    {
    case PROP_ENUM:
      g_value_set_enum (value, self->priv->enum);
      break;

    default:
      /* We don't have any other property... */
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
maman_bar_class_init (MamanBarClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

  gobject_class->set_property = maman_bar_set_property;
  gobject_class->get_property = maman_bar_get_property;

  obj_properties[PROP_ENUM] =
    g_param_spec_enum ("enum",
                         "Enum",
                         "Example enum",

                         my_enum_get_type();
                         MY_ENUM_FOO /* default value */,
                         G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);

  g_object_class_install_properties (gobject_class,
                                     N_PROPERTIES,
                                     obj_properties);
}

/************************************************/
/* Use                                          */
/************************************************/

static const GEnumValue values[] = {
    { MY_ENUM_FOO, "MY_ENUM_FOO", "foo" },
    { MY_ENUM_BAR, "MY_ENUM_BAR", "bar" },
    { 0, NULL, NULL }
  };

g_enum_register_static("MyEnum",values);

bar = g_object_new (MAMAN_TYPE_SUBBAR, NULL);
char* enum-nick = "bar"
g_object_set (G_OBJECT (bar), "enum", enum-nick, NULL);