[gnome-shell] gdm: honor timed login delay even if animations disabled

[Ray Strode <halfline src gnome org>]

commit 9ef1bc7273fcfe03dbdffb04ba1bb64db96bd5e1
Author: Ray Strode <rstrode redhat com>
Date:   Tue Aug 18 12:02:17 2015 -0400

    gdm: honor timed login delay even if animations disabled
    
    gnome-shell currently initiates an automatic login attempt if
    timed login is enabled and the timed login animation completes.
    
    Unfortunately, if animations are disabled (as is the case for
    virtual machines) then the timed login animation will complete
    instantly, and timed login will proceed immediately after gnome-shell
    has noticed the user is idle for 5 seconds.
    
    This commit addresses that problem by initiating timed login and the
    animation from a main loop timeout, instead of using the tweener api.

 js/gdm/loginDialog.js | 34 ++++++++++++++++++++++++----------
 1 file changed, 24 insertions(+), 10 deletions(-)
---
diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 1cae3db85..dd7116ce3 100644
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -126,20 +126,34 @@ var UserListItem = new Lang.Class({
         let hold = new Batch.Hold();
 
         this.hideTimedLoginIndicator();
-        Tweener.addTween(this._timedLoginIndicator,
-                         { scale_x: 1.,
-                           time: time,
-                           transition: 'linear',
-                           onComplete: function() {
-                               hold.release();
-                           },
-                           onCompleteScope: this
-                         });
+
+        let startTime = GLib.get_monotonic_time();
+
+        this._timedLoginTimeoutId = GLib.timeout_add (GLib.PRIORITY_DEFAULT,
+                                                      33,
+                                                      Lang.bind(this, function() {
+                                                          let currentTime = GLib.get_monotonic_time();
+                                                          let elapsedTime = (currentTime - startTime) / 
GLib.USEC_PER_SEC;
+                                                          this._timedLoginIndicator.scale_x = elapsedTime / 
time;
+                                                          if (elapsedTime >= time) {
+                                                              this._timedLoginTimeoutId = 0;
+                                                              hold.release();
+                                                              return GLib.SOURCE_REMOVE;
+                                                          }
+
+                                                          return GLib.SOURCE_CONTINUE;
+                                                      }));
+
+        GLib.Source.set_name_by_id(this._timedLoginTimeoutId, '[gnome-shell] this._timedLoginTimeoutId');
+
         return hold;
     },
 
     hideTimedLoginIndicator: function() {
-        Tweener.removeTweens(this._timedLoginIndicator);
+        if (this._timedLoginTimeoutId) {
+            GLib.source_remove(this._timedLoginTimeoutId);
+            this._timedLoginTimeoutId = 0;
+        }
         this._timedLoginIndicator.scale_x = 0.;
     }
 });