[libgd] header-button: add GdHeaderRadioButton

[Cosimo Cecchi <cosimoc src gnome org>]

commit cfd511301407b5afe9f524ade70e9ed57b5aca8a
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Thu Mar 7 16:16:52 2013 -0500

    header-button: add GdHeaderRadioButton
    
    This is a radio button with mode = FALSE, useful to implement radio button
    groups on a header bar, like GdStackSwitcher does.
    A future commit will port GdStackSwitcher to use this.

 libgd/gd-header-button.c |   40 ++++++++++++++++++++++++++++++++++++++++
 libgd/gd-header-button.h |    5 +++++
 2 files changed, 45 insertions(+), 0 deletions(-)
---
diff --git a/libgd/gd-header-button.c b/libgd/gd-header-button.c
index 203fa6b..5a3c2c6 100644
--- a/libgd/gd-header-button.c
+++ b/libgd/gd-header-button.c
@@ -414,6 +414,35 @@ gd_header_menu_button_init (GdHeaderMenuButton *self)
 {
 }
 
+typedef GtkRadioButtonClass GdHeaderRadioButtonClass;
+G_DEFINE_TYPE_WITH_CODE (GdHeaderRadioButton, gd_header_radio_button, GTK_TYPE_RADIO_BUTTON,
+                         G_IMPLEMENT_INTERFACE (GD_TYPE_HEADER_BUTTON, gd_header_button_generic_iface_init))
+
+static void
+gd_header_radio_button_constructed (GObject *object)
+{
+  GdHeaderRadioButton *self = (GdHeaderRadioButton *) (object);
+
+  G_OBJECT_CLASS (GET_PARENT_CLASS (object))->constructed (object);
+
+  gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (self), FALSE);
+}
+
+static void
+gd_header_radio_button_class_init (GdHeaderRadioButtonClass *klass)
+{
+  GObjectClass *oclass = G_OBJECT_CLASS (klass);
+
+  oclass->constructed = gd_header_radio_button_constructed;
+
+  gd_header_button_generic_class_init (klass);
+}
+
+static void
+gd_header_radio_button_init (GdHeaderRadioButton *self)
+{
+}
+
 /**
  * gd_header_simple_button_new:
  *
@@ -437,6 +466,17 @@ gd_header_toggle_button_new (void)
 }
 
 /**
+ * gd_header_radio_button_new:
+ *
+ * Returns: (transfer none):
+ */
+GtkWidget *
+gd_header_radio_button_new (void)
+{
+  return g_object_new (GD_TYPE_HEADER_RADIO_BUTTON, NULL);
+}
+
+/**
  * gd_header_menu_button_new:
  *
  * Returns: (transfer none):
diff --git a/libgd/gd-header-button.h b/libgd/gd-header-button.h
index 43b0715..f5cec51 100644
--- a/libgd/gd-header-button.h
+++ b/libgd/gd-header-button.h
@@ -49,6 +49,11 @@ typedef GtkToggleButton GdHeaderToggleButton;
 GType       gd_header_toggle_button_get_type (void) G_GNUC_CONST;
 GtkWidget * gd_header_toggle_button_new      (void);
 
+#define GD_TYPE_HEADER_RADIO_BUTTON (gd_header_radio_button_get_type ())
+typedef GtkRadioButton GdHeaderRadioButton;
+GType       gd_header_radio_button_get_type  (void) G_GNUC_CONST;
+GtkWidget * gd_header_radio_button_new       (void);
+
 #define GD_TYPE_HEADER_MENU_BUTTON   (gd_header_menu_button_get_type ())
 typedef GtkMenuButton GdHeaderMenuButton;
 GType       gd_header_menu_button_get_type   (void) G_GNUC_CONST;