[gnome-shell] windowMenu: Reinstate left/right window movement

[Jasper St. Pierre <jstpierre src gnome org>]

commit cca528a630e5b1668151faf51d755ffd40c3811f
Author: Ron Yorston <rmy pobox com>
Date:   Mon Jun 22 22:10:50 2015 +0100

    windowMenu: Reinstate left/right window movement
    
    The menu items to move a window to the left/right workspaces were
    removed when the window menu was implemented in GNOME Shell.  This
    is OK for the default vertical layout but not for alternatives.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=751344

 js/ui/windowMenu.js |   15 ++++++++++++---
 1 files changed, 12 insertions(+), 3 deletions(-)
---
diff --git a/js/ui/windowMenu.js b/js/ui/windowMenu.js
index 1f26eb4..001047a 100644
--- a/js/ui/windowMenu.js
+++ b/js/ui/windowMenu.js
@@ -101,13 +101,22 @@ const WindowMenu = new Lang.Class({
 
             if (!isSticky) {
                 let workspace = window.get_workspace();
-                let idx = workspace.index();
-                if (idx > 0) {
+                if (workspace != workspace.get_neighbor(Meta.MotionDirection.LEFT)) {
+                     this.addAction(_("Move to Workspace Left"), Lang.bind(this, function(event) {
+                        window.change_workspace(workspace.get_neighbor(Meta.MotionDirection.LEFT));
+                    }));
+                }
+                if (workspace != workspace.get_neighbor(Meta.MotionDirection.RIGHT)) {
+                     this.addAction(_("Move to Workspace Right"), Lang.bind(this, function(event) {
+                        window.change_workspace(workspace.get_neighbor(Meta.MotionDirection.RIGHT));
+                    }));
+                }
+                if (workspace != workspace.get_neighbor(Meta.MotionDirection.UP)) {
                     this.addAction(_("Move to Workspace Up"), Lang.bind(this, function(event) {
                         window.change_workspace(workspace.get_neighbor(Meta.MotionDirection.UP));
                     }));
                 }
-                if (idx < nWorkspaces) {
+                if (workspace != workspace.get_neighbor(Meta.MotionDirection.DOWN)) {
                      this.addAction(_("Move to Workspace Down"), Lang.bind(this, function(event) {
                         window.change_workspace(workspace.get_neighbor(Meta.MotionDirection.DOWN));
                     }));