[gnome-shell] remote-search: don't use g_file_query_exists()

[Cosimo Cecchi <cosimoc src gnome org>]

commit cbc8ec65082557c8a83496440866a88c85c69fe3
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Nov 6 17:32:39 2012 -0500

    remote-search: don't use g_file_query_exists()
    
    This is called in the main thread, which we should never block for
    synchronous I/O.
    Since the operation we're wrapping is async already, just use
    g_file_query_info_async() instead.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=687491

 js/ui/remoteSearch.js |   19 ++++++++++++++++---
 1 files changed, 16 insertions(+), 3 deletions(-)
---
diff --git a/js/ui/remoteSearch.js b/js/ui/remoteSearch.js
index 0625475..c4462e9 100644
--- a/js/ui/remoteSearch.js
+++ b/js/ui/remoteSearch.js
@@ -38,9 +38,22 @@ function loadRemoteSearchProviders(addProviderCallback) {
     for (let i = 0; i < dataDirs.length; i++) {
         let path = GLib.build_filenamev([dataDirs[i], 'gnome-shell', 'search-providers']);
         let dir = Gio.file_new_for_path(path);
-        if (!dir.query_exists(null))
-            continue;
-        loadRemoteSearchProvidersFromDir(dir, loadedProviders, addProviderCallback);
+
+        dir.query_info_async('standard:type', Gio.FileQueryInfoFlags.NONE,
+            GLib.PRIORITY_DEFAULT, null,
+                function(object, res) {
+                    let exists = false;
+                    try {
+                        object.query_info_finish(res);
+                        exists = true;
+                    } catch (e) {
+                    }
+
+                    if (!exists)
+                        return;
+
+                    loadRemoteSearchProvidersFromDir(dir, loadedProviders, addProviderCallback);
+                });
     }
 };