File gnome-shell-hostname-refresh.patch of Package gnome-shell.1083

diff -Npur gnome-shell-3.10.4/js/ui/aboutMenu.js gnome-shell-3.10.4-new/js/ui/aboutMenu.js
--- gnome-shell-3.10.4/js/ui/aboutMenu.js	2014-08-01 05:46:06.211212081 +0800
+++ gnome-shell-3.10.4-new/js/ui/aboutMenu.js	2014-08-01 06:24:53.007267381 +0800
@@ -12,29 +12,21 @@ const AboutMenuButton = new Lang.Class({
     Name: 'AboutMenuButton',
     Extends: PanelMenu.Button,
     _init: function() {
-        let command = 'hostname';
-        let hostname_text;
-        try {
-                let [res, stdout, stderr, status] = GLib.spawn_command_line_sync(command);
-                hostname_text = String.fromCharCode.apply(null, stdout);
-        } catch (e) {
-                /* Donnot display the useless widget */
-                this.parent(null, 'About Me');
-                return;
-        }
+        this._hostname = null;
+        this._updateHostnameId = 0;
+        this._ticket = 1;
 
         let hbox;
         let vbox;
-
         let menuAlignment = 0.25;
+
         if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL)
             menuAlignment = 1.0 - menuAlignment;
         this.parent(menuAlignment, 'About Me');
 
         this.about_hbox = new St.BoxLayout({ style_class: 'panel-status-menu-box' });
-        this.about_hbox.add_child(new St.Label({ text: hostname_text,
-                                           y_align: Clutter.ActorAlign.CENTER
-                                        }));
+        this.hostname_label = new St.Label({y_align: Clutter.ActorAlign.CENTER});
+        this.about_hbox.add_child(this.hostname_label);
 
         this.actor.add_child(this.about_hbox);
         hbox = new St.BoxLayout({ name: 'aboutArea' });
@@ -46,24 +38,69 @@ const AboutMenuButton = new Lang.Class({
         this._os_release = Gio.File.new_for_path('/etc/os-release');
         let success, contents, tag;
         try {
-                [success, contents, tag] = this._os_release.load_contents(null);
+            [success, contents, tag] = this._os_release.load_contents(null);
         } catch (e) {
-                this._sysinfo = new St.Label({ text: 'SUSE Linux Enterprise',
-                                    can_focus: true });
-                vbox.add(this._sysinfo);
-                return;
+            contents = 'SUSE Linux Enterprise';
         }
         let match = new RegExp('(.+)PRETTY_NAME=(.+)ID(.+)').exec(contents.toString().replace(/\n/g, ' '));
         let sysinfo_text;
         if (!match) {
-                sysinfo_text = 'SUSE Linux Enterprise';
+            sysinfo_text = 'SUSE Linux Enterprise';
         } else {
-                sysinfo_text = match[2].toString().replace(/"/g, ' ');
+            sysinfo_text = match[2].toString().replace(/"/g, ' ');
         }
 
         this._sysinfo = new St.Label({ text: sysinfo_text,
-                                    can_focus: true });
+                                     can_focus: true });
         vbox.add(this._sysinfo);
+        this.actor.hide();
+
+        this._updateHostnameId = GLib.timeout_add(GLib.PRIORITY_DEFAULT,
+                                                  this._ticket,
+                                                  Lang.bind(this, function() {
+                                                      if (this._ticket < 60*60)
+                                                          this._ticket *= 2;
+                                                      this._updateHostnameId = 0;
+                                                      this._updateHostname();
+                                                      return false;
+                                                  }));
+
         return;
     },
+
+    _updateHostname: function(){
+        let command = 'hostname';
+        let hostname_text;
+        try {
+            let [res, stdout, stderr, status] = GLib.spawn_command_line_sync(command);
+            hostname_text = String.fromCharCode.apply(null, stdout);
+        } catch (e) {
+            hostname_text = 'localhost';
+        }
+
+        if ((this._hostname == null) || (this._hostname != hostname_text)) {
+            this._ticket = 1;
+            this._hostname = hostname_text;
+            this.hostname_label.set_text(this._hostname);
+            this.actor.show();
+        }
+        this._updateHostnameId = GLib.timeout_add_seconds(GLib.PRIORITY_DEFAULT,
+                                                  this._ticket,
+                                                  Lang.bind(this, function() {
+                                                      if (this._ticket < 60*60)
+                                                          this._ticket *= 2;
+                                                      this._updateHostnameId = 0;
+                                                      this._updateHostname();
+                                                      return false;
+                                                  }));
+    },
+
+    _destroy: function() {
+        this._ticket = 1;
+        if (this._updateHostnameId) {
+            GLib.source_remove (this._updateHostnameId);
+            this._updateHostnameId = 0;
+        }
+    },
+
 });