From 3d4c606aaa611cb70ec0a378b9eea8e7bf16ea10 Mon Sep 17 00:00:00 2001
From: Aaron McMillin <github@aaron.mcmillinclan.org>
Date: Mon, 19 Dec 2016 12:11:58 -0500
Subject: [PATCH 1/2] When source data has display:none, hide the options

---
 src/jquery.multiselect.filter.js |  4 +++-
 src/jquery.multiselect.js        | 14 +++++++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/jquery.multiselect.filter.js b/src/jquery.multiselect.filter.js
index df3bfbf..a525e45 100644
--- a/src/jquery.multiselect.filter.js
+++ b/src/jquery.multiselect.filter.js
@@ -164,11 +164,13 @@
     },
 
     updateCache: function() {
+
       // each list item
       this.rows = this.instance.menu.find(".ui-multiselect-checkboxes li:not(.ui-multiselect-optgroup-label)");
 
       // cache
-      this.cache = this.element.children().map(function() {
+      // Skip display-none rows
+      this.cache = this.element.children(":not(:css(display=none))").map(function() {
         var elem = $(this);
 
         // account for optgroups
diff --git a/src/jquery.multiselect.js b/src/jquery.multiselect.js
index 5c8eeb3..ac989f7 100644
--- a/src/jquery.multiselect.js
+++ b/src/jquery.multiselect.js
@@ -19,6 +19,12 @@
  *
  */
 (function($, undefined) {
+  // http://stackoverflow.com/a/3640212/401636
+  // custom css filter ex: :css(display=none)
+  $.expr[':'].css = function(obj, index, meta, stack) {
+    var args = meta[3].split(/\s*=\s*/);
+    return $(obj).css(args[0]) == args[1];
+  }
 
   var multiselectID = 0;
   var $doc = $(document);
@@ -199,15 +205,17 @@
         }
       }
 
-      //Turn all the options and optiongroups into list items
-      el.children().each(function(i) {
+      // Turn all the options and optiongroups into list items
+      // hide display=none options and optiongroups
+      el.children(":not(:css(display=none))").each(function(i) {
         var $this = $(this);
 
         if(this.tagName === 'OPTGROUP') {
           var $groupLabel = $("<li/>").addClass('ui-multiselect-optgroup-label ' + this.className).appendTo($dropdown);
           var $link = $("<a/>").attr("href", "#").text(this.getAttribute('label')).appendTo($groupLabel);
 
-          $this.children().each(function() {
+          // hide display=none options
+          $this.children(":not(:css(display=none))").each(function() {
             var $listItem = makeItem(this, true).appendTo($dropdown);
           });
         } else {

From 54c1b5709214b7682ad9b5d8bca03a840cce4b61 Mon Sep 17 00:00:00 2001
From: Aaron McMillin <github@aaron.mcmillinclan.org>
Date: Mon, 16 Jan 2017 12:38:46 -0500
Subject: [PATCH 2/2] Also don't index hidden items inside optiongroups

---
 src/jquery.multiselect.filter.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/jquery.multiselect.filter.js b/src/jquery.multiselect.filter.js
index a525e45..3a7d6c9 100644
--- a/src/jquery.multiselect.filter.js
+++ b/src/jquery.multiselect.filter.js
@@ -175,7 +175,7 @@
 
         // account for optgroups
         if(this.tagName.toLowerCase() === "optgroup") {
-          elem = elem.children();
+          elem = elem.children(":not(:css(display=none))");
         }
 
         return elem.map(function() {