[gnome-shell] [misc] add fileUtils.listDirAsync

[Maxim Ermilov <mermilov src gnome org>]

commit 4c068c135bd26e39c7064c880836d946d3bcb0aa
Author: Maxim Ermilov <zaspire rambler ru>
Date:   Fri Oct 1 01:08:22 2010 +0400

    [misc] add fileUtils.listDirAsync
    
    Request information for a files from the directory asynchronously.
    https://bugzilla.gnome.org/show_bug.cgi?id=623708

 js/Makefile.am       |    1 +
 js/misc/fileUtils.js |   22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+), 0 deletions(-)
---
diff --git a/js/Makefile.am b/js/Makefile.am
index 512be01..f35026e 100644
--- a/js/Makefile.am
+++ b/js/Makefile.am
@@ -3,6 +3,7 @@ jsdir = $(pkgdatadir)/js
 
 nobase_dist_js_DATA = 	\
 	misc/docInfo.js		\
+	misc/fileUtils.js	\
 	misc/format.js		\
 	misc/gnomeSession.js	\
 	misc/params.js		\
diff --git a/js/misc/fileUtils.js b/js/misc/fileUtils.js
new file mode 100644
index 0000000..4110041
--- /dev/null
+++ b/js/misc/fileUtils.js
@@ -0,0 +1,22 @@
+const Gio = imports.gi.Gio;
+const GLib = imports.gi.GLib;
+
+function listDirAsync(file, callback) {
+    let allFiles = [];
+    file.enumerate_children_async(Gio.FILE_ATTRIBUTE_STANDARD_NAME,
+                                  Gio.FileQueryInfoFlags.NONE,
+                                  GLib.PRIORITY_LOW, null, function (obj, res) {
+        let enumerator = obj.enumerate_children_finish(res);
+        function onNextFileComplete(obj, res) {
+            let files = obj.next_files_finish(res);
+            if (files.length) {
+                allFiles = allFiles.concat(files);
+                enumerator.next_files_async(100, GLib.PRIORITY_LOW, null, onNextFileComplete);
+            } else {
+                enumerator.close(null);
+                callback(allFiles);
+            }
+        }
+        enumerator.next_files_async(100, GLib.PRIORITY_LOW, null, onNextFileComplete);
+    });
+}