[gnome-shell/gbsneto/new-lock-screen: 10/23] screenShield: Move background to _screenDialogGroup

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

commit 10a194e6ed8d9ec75a575b8affd5495476c508c2
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Oct 7 14:32:31 2019 -0300

    screenShield: Move background to _screenDialogGroup

 js/ui/screenShield.js | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)
---
diff --git a/js/ui/screenShield.js b/js/ui/screenShield.js
index 2e2e95a387..39bcd3536d 100644
--- a/js/ui/screenShield.js
+++ b/js/ui/screenShield.js
@@ -450,15 +450,6 @@ var ScreenShield = class {
 
         this._lockScreenGroup.add_actor(this._lockScreenContents);
 
-        this._backgroundGroup = new Clutter.Actor();
-
-        this._lockScreenGroup.add_actor(this._backgroundGroup);
-        this._backgroundGroup.lower_bottom();
-        this._bgManagers = [];
-
-        this._updateBackgrounds();
-        Main.layoutManager.connect('monitors-changed', this._updateBackgrounds.bind(this));
-
         this._arrowAnimationId = 0;
         this._arrowWatchId = 0;
         this._arrowActiveWatchId = 0;
@@ -492,6 +483,14 @@ var ScreenShield = class {
         this.actor.add_actor(this._lockDialogGroup);
         this.actor.add_actor(this._lockScreenGroup);
 
+        this._backgroundGroup = new Clutter.Actor();
+        this._lockDialogGroup.add_actor(this._backgroundGroup);
+        this._backgroundGroup.lower_bottom();
+        this._bgManagers = [];
+
+        this._updateBackgrounds();
+        Main.layoutManager.connect('monitors-changed', this._updateBackgrounds.bind(this));
+
         this._presence = new GnomeSession.Presence((proxy, error) => {
             if (error) {
                 logError(error, 'Error while reading gnome-session presence');
@@ -601,9 +600,15 @@ var ScreenShield = class {
     }
 
     _updateBackgrounds() {
+        let isGreeter = Main.sessionMode.isGreeter;
+        this._backgroundGroup.visible = !isGreeter;
+
         for (let i = 0; i < this._bgManagers.length; i++)
             this._bgManagers[i].destroy();
 
+        if (isGreeter)
+            return;
+
         this._bgManagers = [];
         this._backgroundGroup.destroy_all_children();