From 720bdb8c4f0c75f17410b6f182343948d89aef61 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Wed, 12 Sep 2012 14:47:23 -0400
Subject: [PATCH 1/3] Store last mouse position in a variable instead of
 document datastore

It's hundred times faster. See http://jsperf.com/data-vs-variable
---
 select2.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/select2.js b/select2.js
index 521629dc..35385cad 100644
--- a/select2.js
+++ b/select2.js
@@ -40,7 +40,7 @@
         return;
     }
 
-    var KEY, AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer;
+    var KEY, AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer, lastMousePosition;
 
     KEY = {
         TAB: 9,
@@ -163,7 +163,7 @@
     }
 
     $(document).delegate("body", "mousemove", function (e) {
-        $.data(document, "select2-lastpos", {x: e.pageX, y: e.pageY});
+        lastMousePosition = {x: e.pageX, y: e.pageY};
     });
 
     /**
@@ -174,7 +174,7 @@
      */
     function installFilteredMouseMove(element) {
 	    element.bind("mousemove", function (e) {
-            var lastpos = $.data(document, "select2-lastpos");
+            var lastpos = lastMousePosition;
             if (lastpos === undefined || lastpos.x !== e.pageX || lastpos.y !== e.pageY) {
                 $(e.target).trigger("mousemove-filtered", e);
             }

From 3387853d9c4dbe8c44c268f47b255b159650f45d Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Wed, 12 Sep 2012 14:50:17 -0400
Subject: [PATCH 2/3] Keep a cached reference to jQueryfied document

---
 select2.js | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/select2.js b/select2.js
index 35385cad..4f7ff4c6 100644
--- a/select2.js
+++ b/select2.js
@@ -40,7 +40,8 @@
         return;
     }
 
-    var KEY, AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer, lastMousePosition;
+    var KEY, AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer,
+        lastMousePosition, $document;
 
     KEY = {
         TAB: 9,
@@ -90,6 +91,8 @@
         }
     };
 
+    $document = $(document);
+
     nextUid=(function() { var counter=1; return function() { return counter++; }; }());
 
     function indexOf(value, array) {
@@ -162,7 +165,7 @@
         });
     }
 
-    $(document).delegate("body", "mousemove", function (e) {
+    $document.delegate("body", "mousemove", function (e) {
         lastMousePosition = {x: e.pageX, y: e.pageY};
     });
 
@@ -493,16 +496,16 @@
      *
      * also takes care of clicks on label tags that point to the source element
      */
-    $(document).ready(function () {
-        $(document).delegate("body", "mousedown touchend", function (e) {
+    $document.ready(function () {
+        $document.delegate("body", "mousedown touchend", function (e) {
             var target = $(e.target).closest("div.select2-container").get(0), attr;
             if (target) {
-                $(document).find("div.select2-container-active").each(function () {
+                $document.find("div.select2-container-active").each(function () {
                     if (this !== target) $(this).data("select2").blur();
                 });
             } else {
                 target = $(e.target).closest("div.select2-drop").get(0);
-                $(document).find("div.select2-drop-active").each(function () {
+                $document.find("div.select2-drop-active").each(function () {
                     if (this !== target) $(this).data("select2").blur();
                 });
             }

From 7bc63dd26447f11458ea047c5f663265d241a22a Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Wed, 12 Sep 2012 14:57:35 -0400
Subject: [PATCH 3/3] Get rid of 2 useless jQuery.delegate event handler

---
 select2.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/select2.js b/select2.js
index 4f7ff4c6..caa8660f 100644
--- a/select2.js
+++ b/select2.js
@@ -165,7 +165,7 @@
         });
     }
 
-    $document.delegate("body", "mousemove", function (e) {
+    $document.bind("mousemove", function (e) {
         lastMousePosition = {x: e.pageX, y: e.pageY};
     });
 
@@ -497,7 +497,7 @@
      * also takes care of clicks on label tags that point to the source element
      */
     $document.ready(function () {
-        $document.delegate("body", "mousedown touchend", function (e) {
+        $document.bind("mousedown touchend", function (e) {
             var target = $(e.target).closest("div.select2-container").get(0), attr;
             if (target) {
                 $document.find("div.select2-container-active").each(function () {