fix errors of type 'Unsafe usage of new static', fixes #1245

Closes #1245

Merge request studip/studip!760

1 files changed, 8 insertions, 10 deletions

diff --git a/lib/classes/WidgetContainer.php b/lib/classes/WidgetContainer.php
index 39665a9..b4aaa8c 100644
--- a/lib/classes/WidgetContainer.php
+++ b/lib/classes/WidgetContainer.php
@@ -10,6 +10,14 @@
 abstract class WidgetContainer
 {
     /**
+     * Protected constructor to ensure that the singleton Get() method is always
+     * used.
+     *
+     * @see WidgetContainer::Get
+     */
+    abstract protected function __construct();
+
+    /**
      * The singleton instance of the container
      */
     protected static $instances = null;
@@ -31,16 +39,6 @@ abstract class WidgetContainer
     }
 
     /**
-     * Private constructor to ensure that the singleton Get() method is always
-     * used.
-     *
-     * @see WidgetContainer::Get
-     */
-    protected function __construct()
-    {
-    }
-
-    /**
      * Contains the widgets of the container
      */
     protected $widgets = [];