From 0ab70ad33c4e22a176e89bb8a935aed8c7848e51 Mon Sep 17 00:00:00 2001
From: Matthew Barnes <mbarnes@redhat.com>
Date: Mon, 1 Nov 2010 17:17:42 -0400
Subject: Add GBinding transform funcs for enum types.

We'll want to store enum settings by their nicknames.
---
 e-util/e-util.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 e-util/e-util.h | 10 ++++++++
 2 files changed, 84 insertions(+)

(limited to 'e-util')

diff --git a/e-util/e-util.c b/e-util/e-util.c
index abc6ccc377..4c2764de4b 100644
--- a/e-util/e-util.c
+++ b/e-util/e-util.c
@@ -1564,6 +1564,80 @@ e_binding_transform_string_to_color (GBinding *binding,
 	return success;
 }
 
+/**
+ * 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
+ **/
+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
+ **/
+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;
+}
+
 /**
  * e_binding_transform_source_to_uid:
  * @binding: a #GBinding
diff --git a/e-util/e-util.h b/e-util/e-util.h
index 4e982bf248..6560481f06 100644
--- a/e-util/e-util.h
+++ b/e-util/e-util.h
@@ -156,6 +156,16 @@ gboolean	e_binding_transform_string_to_color
 						 const GValue *source_value,
 						 GValue *target_value,
 						 gpointer not_used);
+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);
 gboolean	e_binding_transform_source_to_uid
 						(GBinding *binding,
 						 const GValue *source_value,
-- 
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