[gnome-shell] Add magic "js " prefix to runDialog to run arbitrary JavaScript

[Colin Walters <walters src gnome org>]

commit 1cb6fc004b5c8752b73e5258db8ac9c71bde71e3
Author: Colin Walters <walters verbum org>
Date:   Wed Jul 8 17:30:09 2009 -0400

    Add magic "js " prefix to runDialog to run arbitrary JavaScript
    
    This is useful for debugging things; e.g. you can "js Meta.quit(0)"
    to exit the WM, "js Shell.Global.get().<whatever>..." etc.

 js/ui/runDialog.js |   17 ++++++++++++++++-
 1 files changed, 16 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/runDialog.js b/js/ui/runDialog.js
index eafdaef..fc5493a 100644
--- a/js/ui/runDialog.js
+++ b/js/ui/runDialog.js
@@ -79,7 +79,22 @@ RunDialog.prototype = {
     },
 
     _run : function(command) {
-        if (command == 'restart') {
+        if (command.slice(0, 3) == 'js ') {
+            let commandHeader = "const Clutter = imports.gi.Clutter; " +
+                                 "const GLib = imports.gi.GLib; " +
+                                 "const Gtk = imports.gi.Gtk; " +
+                                 "const Mainloop = imports.mainloop; " +
+                                 "const Meta = imports.gi.Meta; " +
+                                 "const Shell = imports.gi.Shell; " +
+                                 "const Main = imports.ui.main; ";
+            let cmd = commandHeader + command.substring(2);
+            try {
+                let result = eval(cmd);
+                log("" + result);
+            } catch (e) {
+                log(e);
+            }
+        } else if (command == 'restart') {
             let global = Shell.Global.get();
             global.reexec_self();
         } else if (command) {