[evolution-data-server] Add useful GBinding transform funcs from e-util.

[Matthew Barnes <mbarnes src gnome org>]

commit a8dcfca3229f7649e635ef996f2222c647039206
Author: Matthew Barnes <mbarnes redhat com>
Date:   Tue Nov 15 11:03:07 2011 -0500

    Add useful GBinding transform funcs from e-util.
    
    e_binding_transform_enum_value_to_nick()
    e_binding_transform_enum_nick_to_value()

 .../libedataserver/libedataserver-sections.txt     |    2 +
 libedataserver/e-data-server-util.c                |   78 ++++++++++++++++++++
 libedataserver/e-data-server-util.h                |   14 +++-
 3 files changed, 93 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/libedataserver/libedataserver-sections.txt b/docs/reference/libedataserver/libedataserver-sections.txt
index 1bd5ada..0099fcf 100644
--- a/docs/reference/libedataserver/libedataserver-sections.txt
+++ b/docs/reference/libedataserver/libedataserver-sections.txt
@@ -549,6 +549,8 @@ e_util_copy_string_slist
 e_util_copy_object_slist
 e_util_free_string_slist
 e_util_free_object_slist
+e_binding_transform_enum_value_to_nick
+e_binding_transform_enum_nick_to_value
 e_util_get_prefix
 e_util_get_cp_prefix
 e_util_get_localedir
diff --git a/libedataserver/e-data-server-util.c b/libedataserver/e-data-server-util.c
index 5228d09..c7211a2 100644
--- a/libedataserver/e-data-server-util.c
+++ b/libedataserver/e-data-server-util.c
@@ -946,6 +946,84 @@ e_util_free_object_slist (GSList *objects)
 	g_slist_free_full (objects, (GDestroyNotify) g_object_unref);
 }
 
+/**
+ * e_binding_transform_enum_value_to_nick:
+ * @binding: a #GBinding
+ * @source_value: a #GValue whose type is derived from #G_TYPE_ENUM
+ * @target_value: a #GValue of type #G_TYPE_STRING
+ * @not_used: not used
+ *
+ * Transforms an enumeration value to its corresponding nickname.
+ *
+ * Returns: %TRUE if the enum value has a corresponding nickname
+ *
+ * Since: 3.4
+ **/
+gboolean
+e_binding_transform_enum_value_to_nick (GBinding *binding,
+                                        const GValue *source_value,
+                                        GValue *target_value,
+                                        gpointer not_used)
+{
+	GEnumClass *enum_class;
+	GEnumValue *enum_value;
+	gint value;
+	gboolean success = FALSE;
+
+	g_return_val_if_fail (G_IS_BINDING (binding), FALSE);
+
+	enum_class = g_type_class_peek (G_VALUE_TYPE (source_value));
+	g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), FALSE);
+
+	value = g_value_get_enum (source_value);
+	enum_value = g_enum_get_value (enum_class, value);
+	if (enum_value != NULL) {
+		g_value_set_string (target_value, enum_value->value_nick);
+		success = TRUE;
+	}
+
+	return success;
+}
+
+/**
+ * e_binding_transform_enum_nick_to_value:
+ * @binding: a #GBinding
+ * @source_value: a #GValue of type #G_TYPE_STRING
+ * @target_value: a #GValue whose type is derived from #G_TYPE_ENUM
+ * @not_used: not used
+ *
+ * Transforms an enumeration nickname to its corresponding value.
+ *
+ * Returns: %TRUE if the enum nickname has a corresponding value
+ *
+ * Since: 3.4
+ **/
+gboolean
+e_binding_transform_enum_nick_to_value (GBinding *binding,
+                                        const GValue *source_value,
+                                        GValue *target_value,
+                                        gpointer not_used)
+{
+	GEnumClass *enum_class;
+	GEnumValue *enum_value;
+	const gchar *string;
+	gboolean success = FALSE;
+
+	g_return_val_if_fail (G_IS_BINDING (binding), FALSE);
+
+	enum_class = g_type_class_peek (G_VALUE_TYPE (target_value));
+	g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), FALSE);
+
+	string = g_value_get_string (source_value);
+	enum_value = g_enum_get_value_by_nick (enum_class, string);
+	if (enum_value != NULL) {
+		g_value_set_enum (target_value, enum_value->value);
+		success = TRUE;
+	}
+
+	return success;
+}
+
 #ifdef G_OS_WIN32
 
 #include <windows.h>
diff --git a/libedataserver/e-data-server-util.h b/libedataserver/e-data-server-util.h
index 8162b0c..8450c63 100644
--- a/libedataserver/e-data-server-util.h
+++ b/libedataserver/e-data-server-util.h
@@ -23,7 +23,7 @@
 #define E_DATA_SERVER_UTIL_H
 
 #include <sys/types.h>
-#include <glib.h>
+#include <glib-object.h>
 
 G_BEGIN_DECLS
 
@@ -70,6 +70,18 @@ GSList *	e_util_copy_object_slist	(GSList *copy_to, const GSList *objects);
 void		e_util_free_string_slist	(GSList *strings);
 void		e_util_free_object_slist	(GSList *objects);
 
+/* Useful GBinding transform functions */
+gboolean	e_binding_transform_enum_value_to_nick
+						(GBinding *binding,
+						 const GValue *source_value,
+						 GValue *target_value,
+						 gpointer not_used);
+gboolean	e_binding_transform_enum_nick_to_value
+						(GBinding *binding,
+						 const GValue *source_value,
+						 GValue *target_value,
+						 gpointer not_used);
+
 #ifdef G_OS_WIN32
 const gchar *	e_util_get_prefix		(void) G_GNUC_CONST;
 const gchar *	e_util_get_cp_prefix		(void) G_GNUC_CONST;