Fix tabs.

added enumerator.

xpcom/io/nsIFile.idl

@@ -1,4 +1,4 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /*
  * The contents of this file are subject to the Netscape Public
  * License Version 1.1 (the "License"); you may not use this file
@@ -28,6 +28,7 @@
 // may think they are. Welcome to reality.
 
 #include "nsISupports.idl"
+interface nsISimpleEnumerator;
 
 [scriptable, uuid(c8c0a080-0868-11d3-915f-d9d889d48e3c)]
 interface nsIFile : nsISupports
@@ -249,6 +250,16 @@ interface nsIFile : nsISupports
      * If |recur| is true, it will descend subdirectories looking for 
      */
     boolean isContainedIn(in nsIFile inFile, in boolean recur);
+
+
+    /**
+     * Returns an enumeration of the elements in a directory. Each
+     * element in the enumeration is an nsIFile. 
+     *
+     *   @return NS_ERROR_FILE_NOT_DIRECTORY if the current nsIFile does
+     *           not specify a directory.
+     */ 
+    readonly attribute nsISimpleEnumerator children;
 };
 
 %{C++
@@ -266,4 +277,9 @@ interface nsIFile : nsISupports
 #define NS_ERROR_FILE_INVALID_PATH        NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_FILES, 9)
 #define NS_ERROR_FILE_DISK_FULL           NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_FILES, 10)
 #define NS_ERROR_FILE_CORRUPTED           NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_FILES, 11)
+
+//PR_NOT_DIRECTORY_ERROR
+#define NS_ERROR_FILE_NOT_DIRECTORY           NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_FILES, 12)
+
+
 %}