[gnome-shell] environment: improve Object.toString for delegate objects

[Dan Winship <danw src gnome org>]

commit 07a0960265e4bbb1222f386bf07343331bb77129
Author: Dan Winship <danw gnome org>
Date:   Wed Apr 6 10:40:01 2011 -0400

    environment: improve Object.toString for delegate objects
    
    If a JS object has an 'actor' property pointing to a ClutterActor,
    include the actor's toString() output in the delegate's toString()
    output. Eg:
    
      js>>> Main.panel
      [object Object delegate for 0xff6080 StBoxLayout.menu-bar "panel" ("Activities")]
    
    https://bugzilla.gnome.org/show_bug.cgi?id=646919

 js/ui/environment.js |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/environment.js b/js/ui/environment.js
index 9061a77..758a2cb 100644
--- a/js/ui/environment.js
+++ b/js/ui/environment.js
@@ -88,6 +88,15 @@ function init() {
         return St.describe_actor(this);
     };
 
+    let origToString = Object.prototype.toString;
+    Object.prototype.toString = function() {
+        let base = origToString.call(this);
+        if ('actor' in this && this.actor instanceof Clutter.Actor)
+            return base.replace(/\]$/, ' delegate for ' + this.actor.toString().substring(1));
+        else
+            return base;
+    };
+
     if (window.global === undefined) // test environment
         return;