loginDialog: Fix session button can be clicked

When session menu button is hidden, button can be clicked and show popup
menu.

https://bugzilla.gnome.org/show_bug.cgi?id=781482

diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 0b6c0b50a7aea0e6b41176bb6be9a24505766b10..094a1f96cec3d3b4b7af95515a36a62b36f8ece9 100644 (file)
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -775,10 +775,12 @@ const LoginDialog = new Lang.Class({
     },
 
     _onPrompted: function() {
-        this._sessionMenuButton.updateSensitivity(true);
-
-        if (this._shouldShowSessionMenuButton())
+        if (this._shouldShowSessionMenuButton()) {
+            this._sessionMenuButton.updateSensitivity(true);
             this._authPrompt.setActorInDefaultButtonWell(this._sessionMenuButton.actor);
+        } else {
+            this._sessionMenuButton.updateSensitivity(false);
+        }
         this._showPrompt();
     },
 
@@ -881,6 +883,7 @@ const LoginDialog = new Lang.Class({
                                                       }));
         this._updateCancelButton();
 
+        this._sessionMenuButton.updateSensitivity(false);
         this._authPrompt.updateSensitivity(true);
         this._showPrompt();
     },