Index: sources/gui/qml/components/ModalDialog.qml
===================================================================
diff -u -r94f7349bd073a732dba5295250fc0e26f740743c -r1b060ccba8bfccf34d6a7a5ddd6d94eb6d149829
--- sources/gui/qml/components/ModalDialog.qml	(.../ModalDialog.qml)	(revision 94f7349bd073a732dba5295250fc0e26f740743c)
+++ sources/gui/qml/components/ModalDialog.qml	(.../ModalDialog.qml)	(revision 1b060ccba8bfccf34d6a7a5ddd6d94eb6d149829)
@@ -25,6 +25,9 @@
  * \brief   The parent item for modal dialogs
  */
 Dialog { id : _root
+    property bool autoHide          : false
+    property int  autoHideDuration  : 1000
+
     width   : Variables.poweroffWidth
     height  : Variables.poweroffHeight
     visible : false
@@ -48,4 +51,24 @@
         color : Colors.backgroundDialog
         radius: Variables.dialogRadius
     }
+
+    onVisibleChanged: {
+        if (autoHide && visible) {
+            _autoHideAnimation.start()
+            console.debug("_autoHideAnimation started")
+        }
+    }
+
+
+    NumberAnimation { id: _autoHideAnimation
+        running: false
+        target: _root
+        property: "opacity"
+        duration: autoHideDuration
+        //easing.type: Easing.InOutQuad
+        onFinished: {
+            console.debug("_autoHideAnimation finished")
+            _root.visible = false
+        }
+    }
 }