1 files changed, 38 insertions, 0 deletions
diff --git a/modules/libpref/nsIRelativeFilePref.idl b/modules/libpref/nsIRelativeFilePref.idl
new file mode 100644
index 0000000000..e10ef0514d
--- /dev/null
+++ b/modules/libpref/nsIRelativeFilePref.idl
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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"
+interface nsIFile;
+
+/**
+ * The nsIRelativeFilePref interface is a wrapper for an nsIFile and
+ * and a directory service key. When used as a pref value, it stores a
+ * relative path to the file from the location pointed to by the directory
+ * service key. The path has the same syntax across all platforms.
+ *
+ * @see nsIPrefBranch::getComplexValue
+ * @see nsIPrefBranch::setComplexValue
+ *
+ */
+
+[uuid(2f977d4e-5485-11d4-87e2-0010a4e75ef2)]
+interface nsIRelativeFilePref : nsISupports
+{
+  /**
+   * file
+   *
+   * The file whose location is stored or retrieved.
+   */
+  attribute nsIFile file;
+
+  /**
+   * relativeToKey
+   *
+   * A directory service key for the directory
+   * from which the file path is relative.
+   */
+  attribute ACString relativeToKey;
+
+};