From 3ce7f6bbd6292b67fccf64929aff1b8687a1a23e Mon Sep 17 00:00:00 2001
From: Patrick Fust <patrick.fust@regionh.dk>
Date: Fri, 26 Feb 2016 11:31:47 +0100
Subject: [PATCH] If selected list is supplied, the element must only be in the
 selected box

---
 dist/dual-list-box.js | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/dist/dual-list-box.js b/dist/dual-list-box.js
index 5fdf03f..4296ab2 100644
--- a/dist/dual-list-box.js
+++ b/dist/dual-list-box.js
@@ -93,13 +93,17 @@
                     text = item[options.text];
                 }
 
-                $('<option>', {
-                    value: item[options.value],
-                    text: text,
-                    selected: (selected.some(function (e) { return e[options.value] === item[options.value] }) === true)
-                }).appendTo(options.element);
+                var isSelected = (selected.some(function (e) { return e[options.value] === item[options.value] }) === true);
+                if (!isSelected) {
+                    $('<option>', {
+                        value: item[options.value],
+                        text: text,
+                        selected: isSelected
+                    }).appendTo(options.element);
+                } else { // is already in the options list
+                    $(options.element).find("option[value=" + item[options.value] + "]").attr("selected", true);
+                }
             });
-
             construct(options);
         });
     }