[gnome-shell] environment: Monkey-patch iterate_children() generator

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8d4e650a95a0fb0a3552ec316270185a84864c5a
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue May 19 20:59:36 2020 +0200

    environment: Monkey-patch iterate_children() generator
    
    This is a small convenience method for using ClutterActor's iterator API
    with javascript's built-in iterator protocol, for example as:
    
      for (let child of container.iterate_children())
          doStuff(child);
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1268

 js/ui/environment.js | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/js/ui/environment.js b/js/ui/environment.js
index 4a12314024..44a92db361 100644
--- a/js/ui/environment.js
+++ b/js/ui/environment.js
@@ -285,6 +285,11 @@ function init() {
         _easeActorProperty(this, 'value', target, params);
     };
 
+    Clutter.Actor.prototype.iterate_children = function* () {
+        for (let c = this.get_first_child(); c; c = c.get_next_sibling())
+            yield c;
+    };
+
     Clutter.Actor.prototype.toString = function () {
         return St.describe_actor(this);
     };