1 files changed, 34 insertions, 0 deletions
diff --git a/modules/libpref/nsIPrefLocalizedString.idl b/modules/libpref/nsIPrefLocalizedString.idl
new file mode 100644
index 0000000000..236ce7acdf
--- /dev/null
+++ b/modules/libpref/nsIPrefLocalizedString.idl
@@ -0,0 +1,34 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+#include "nsISupportsPrimitives.idl"
+
+/**
+ * The nsIPrefLocalizedString interface is simply a wrapper interface for
+ * nsISupportsString so the preferences service can have a unique identifier
+ * to distinguish between requests for normal wide strings (nsISupportsString)
+ * and "localized" wide strings, which get their default values from properites
+ * files.
+ *
+ * @see nsIPrefBranch
+ * @see nsISupportsString
+ */
+[scriptable, builtinclass, uuid(ae419e24-1dd1-11b2-b39a-d3e5e7073802)]
+interface nsIPrefLocalizedString : nsISupportsString {};
+
+%{C++
+
+#define NS_PREFLOCALIZEDSTRING_CID                     \
+  { /* {064d9cee-1dd2-11b2-83e3-d25ab0193c26} */       \
+    0x064d9cee,                                        \
+    0x1dd2,                                            \
+    0x11b2,                                            \
+    { 0x83, 0xe3, 0xd2, 0x5a, 0xb0, 0x19, 0x3c, 0x26 } \
+  }
+
+#define NS_PREFLOCALIZEDSTRING_CONTRACTID "@mozilla.org/pref-localizedstring;1"
+
+%}