From 00a31df47a6eec7efe0a365e65d5f038eeec7617 Mon Sep 17 00:00:00 2001
From: Kevin Brown <kevin@kevinbrown.in>
Date: Sun, 19 Oct 2014 17:39:09 -0400
Subject: [PATCH] Generate more consistent ids

A global id is generated for the container, and each further id
builds off of the global id.
---
 dist/js/select2.amd.full.js        | 54 ++++++++++++++++++------------
 dist/js/select2.amd.js             | 54 ++++++++++++++++++------------
 dist/js/select2.full.js            | 54 ++++++++++++++++++------------
 dist/js/select2.full.min.js        |  4 +--
 dist/js/select2.js                 | 54 ++++++++++++++++++------------
 dist/js/select2.min.js             |  2 +-
 src/js/select2/core.js             | 10 ++++++
 src/js/select2/data/base.js        | 14 +++-----
 src/js/select2/data/select.js      |  4 ++-
 src/js/select2/selection/single.js | 15 +++------
 src/js/select2/utils.js            | 11 ++++++
 11 files changed, 168 insertions(+), 108 deletions(-)

diff --git a/dist/js/select2.amd.full.js b/dist/js/select2.amd.full.js
index 64c42154..8237c8b6 100644
--- a/dist/js/select2.amd.full.js
+++ b/dist/js/select2.amd.full.js
@@ -134,6 +134,17 @@ define('select2/utils',[], function () {
 
   Utils.Observable = Observable;
 
+  Utils.generateChars = function (length) {
+    var chars = '';
+
+    for (var i = 0; i < length; i++) {
+      var randomChar = Math.floor(Math.random() * 36);
+      chars += randomChar.toString(36);
+    }
+
+    return chars;
+  };
+
   return Utils;
 });
 
@@ -515,16 +526,6 @@ define('select2/selection/single',[
 
     $selection.attr('title', this.$element.attr('title'));
 
-    var id = 'select2-container-';
-
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
-
-    $selection.find('.rendered-selection').attr('id', id);
-    $selection.attr('aria-labelledby', id);
-
     this.$selection = $selection;
 
     return $selection;
@@ -535,6 +536,11 @@ define('select2/selection/single',[
 
     SingleSelection.__super__.bind.apply(this, arguments);
 
+    var id = container.id + '-container';
+
+    this.$selection.find('.rendered-selection').attr('id', id);
+    this.$selection.attr('aria-labelledby', id);
+
     this.$selection.on('mousedown', function (evt) {
       // Only respond to left clicks
       if (evt.which !== 1) {
@@ -781,21 +787,15 @@ define('select2/data/base',[
     // Can be implemented in subclasses
   };
 
-  BaseAdapter.prototype.generateResultId = function (data) {
-    var id = 'select2-result-';
+  BaseAdapter.prototype.generateResultId = function (container, data) {
+    var id = container.id + '-result-';
 
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
+    id += Utils.generateChars(4);
 
     if (data.id != null) {
       id += '-' + data.id.toString();
     } else {
-      for (var s = 0; s < 4; s++) {
-        var idChar = Math.floor(Math.random() * 16);
-        id += idChar.toString(16);
-      }
+      id += '-' + Utils.generateChars(4);
     }
     return id;
   };
@@ -886,6 +886,8 @@ define('select2/data/select',[
   SelectAdapter.prototype.bind = function (container, $container) {
     var self = this;
 
+    this.container = container;
+
     container.on('select', function (params) {
       self.select(params.data);
     });
@@ -952,7 +954,7 @@ define('select2/data/select',[
       }
 
       if (data.id) {
-        data._resultId = this.generateResultId(data);
+        data._resultId = this.generateResultId(this.container, data);
       }
 
       $option.data('data', data);
@@ -1292,6 +1294,16 @@ define('select2/core',[
   var Select2 = function ($element, options) {
     this.$element = $element;
 
+    if ($element.attr('id') != null) {
+      this.id = $element.attr('id');
+    } else if ($element.attr('name') != null) {
+      this.id = $element.attr('name') + '-' + Utils.generateChars(2);
+    } else {
+      this.id = Utils.generateChars(4);
+    }
+
+    this.id = 'select2-' + this.id;
+
     options = options || {};
 
     options.multiple = options.multiple || $element.prop('multiple');
diff --git a/dist/js/select2.amd.js b/dist/js/select2.amd.js
index 64c42154..8237c8b6 100644
--- a/dist/js/select2.amd.js
+++ b/dist/js/select2.amd.js
@@ -134,6 +134,17 @@ define('select2/utils',[], function () {
 
   Utils.Observable = Observable;
 
+  Utils.generateChars = function (length) {
+    var chars = '';
+
+    for (var i = 0; i < length; i++) {
+      var randomChar = Math.floor(Math.random() * 36);
+      chars += randomChar.toString(36);
+    }
+
+    return chars;
+  };
+
   return Utils;
 });
 
@@ -515,16 +526,6 @@ define('select2/selection/single',[
 
     $selection.attr('title', this.$element.attr('title'));
 
-    var id = 'select2-container-';
-
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
-
-    $selection.find('.rendered-selection').attr('id', id);
-    $selection.attr('aria-labelledby', id);
-
     this.$selection = $selection;
 
     return $selection;
@@ -535,6 +536,11 @@ define('select2/selection/single',[
 
     SingleSelection.__super__.bind.apply(this, arguments);
 
+    var id = container.id + '-container';
+
+    this.$selection.find('.rendered-selection').attr('id', id);
+    this.$selection.attr('aria-labelledby', id);
+
     this.$selection.on('mousedown', function (evt) {
       // Only respond to left clicks
       if (evt.which !== 1) {
@@ -781,21 +787,15 @@ define('select2/data/base',[
     // Can be implemented in subclasses
   };
 
-  BaseAdapter.prototype.generateResultId = function (data) {
-    var id = 'select2-result-';
+  BaseAdapter.prototype.generateResultId = function (container, data) {
+    var id = container.id + '-result-';
 
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
+    id += Utils.generateChars(4);
 
     if (data.id != null) {
       id += '-' + data.id.toString();
     } else {
-      for (var s = 0; s < 4; s++) {
-        var idChar = Math.floor(Math.random() * 16);
-        id += idChar.toString(16);
-      }
+      id += '-' + Utils.generateChars(4);
     }
     return id;
   };
@@ -886,6 +886,8 @@ define('select2/data/select',[
   SelectAdapter.prototype.bind = function (container, $container) {
     var self = this;
 
+    this.container = container;
+
     container.on('select', function (params) {
       self.select(params.data);
     });
@@ -952,7 +954,7 @@ define('select2/data/select',[
       }
 
       if (data.id) {
-        data._resultId = this.generateResultId(data);
+        data._resultId = this.generateResultId(this.container, data);
       }
 
       $option.data('data', data);
@@ -1292,6 +1294,16 @@ define('select2/core',[
   var Select2 = function ($element, options) {
     this.$element = $element;
 
+    if ($element.attr('id') != null) {
+      this.id = $element.attr('id');
+    } else if ($element.attr('name') != null) {
+      this.id = $element.attr('name') + '-' + Utils.generateChars(2);
+    } else {
+      this.id = Utils.generateChars(4);
+    }
+
+    this.id = 'select2-' + this.id;
+
     options = options || {};
 
     options.multiple = options.multiple || $element.prop('multiple');
diff --git a/dist/js/select2.full.js b/dist/js/select2.full.js
index 68931b67..90ab64f8 100644
--- a/dist/js/select2.full.js
+++ b/dist/js/select2.full.js
@@ -9672,6 +9672,17 @@ define('select2/utils',[], function () {
 
   Utils.Observable = Observable;
 
+  Utils.generateChars = function (length) {
+    var chars = '';
+
+    for (var i = 0; i < length; i++) {
+      var randomChar = Math.floor(Math.random() * 36);
+      chars += randomChar.toString(36);
+    }
+
+    return chars;
+  };
+
   return Utils;
 });
 
@@ -10053,16 +10064,6 @@ define('select2/selection/single',[
 
     $selection.attr('title', this.$element.attr('title'));
 
-    var id = 'select2-container-';
-
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
-
-    $selection.find('.rendered-selection').attr('id', id);
-    $selection.attr('aria-labelledby', id);
-
     this.$selection = $selection;
 
     return $selection;
@@ -10073,6 +10074,11 @@ define('select2/selection/single',[
 
     SingleSelection.__super__.bind.apply(this, arguments);
 
+    var id = container.id + '-container';
+
+    this.$selection.find('.rendered-selection').attr('id', id);
+    this.$selection.attr('aria-labelledby', id);
+
     this.$selection.on('mousedown', function (evt) {
       // Only respond to left clicks
       if (evt.which !== 1) {
@@ -10319,21 +10325,15 @@ define('select2/data/base',[
     // Can be implemented in subclasses
   };
 
-  BaseAdapter.prototype.generateResultId = function (data) {
-    var id = 'select2-result-';
+  BaseAdapter.prototype.generateResultId = function (container, data) {
+    var id = container.id + '-result-';
 
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
+    id += Utils.generateChars(4);
 
     if (data.id != null) {
       id += '-' + data.id.toString();
     } else {
-      for (var s = 0; s < 4; s++) {
-        var idChar = Math.floor(Math.random() * 16);
-        id += idChar.toString(16);
-      }
+      id += '-' + Utils.generateChars(4);
     }
     return id;
   };
@@ -10424,6 +10424,8 @@ define('select2/data/select',[
   SelectAdapter.prototype.bind = function (container, $container) {
     var self = this;
 
+    this.container = container;
+
     container.on('select', function (params) {
       self.select(params.data);
     });
@@ -10490,7 +10492,7 @@ define('select2/data/select',[
       }
 
       if (data.id) {
-        data._resultId = this.generateResultId(data);
+        data._resultId = this.generateResultId(this.container, data);
       }
 
       $option.data('data', data);
@@ -10830,6 +10832,16 @@ define('select2/core',[
   var Select2 = function ($element, options) {
     this.$element = $element;
 
+    if ($element.attr('id') != null) {
+      this.id = $element.attr('id');
+    } else if ($element.attr('name') != null) {
+      this.id = $element.attr('name') + '-' + Utils.generateChars(2);
+    } else {
+      this.id = Utils.generateChars(4);
+    }
+
+    this.id = 'select2-' + this.id;
+
     options = options || {};
 
     options.multiple = options.multiple || $element.prop('multiple');
diff --git a/dist/js/select2.full.min.js b/dist/js/select2.full.min.js
index c88a0e61..ca39dc89 100644
--- a/dist/js/select2.full.min.js
+++ b/dist/js/select2.full.min.js
@@ -1,4 +1,4 @@
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g=c(d[f]),h=this.item(g);e.push(h)}b.children=e}b.id&&(b._resultId=this.generateResultId(b)),a.data("data",b)}return b},d.prototype.matches=function(a,b){var d=c.extend(!0,{},b);if(b.children){for(var e=b.children.length-1;e>=0;e--){var f=b.children[e],g=this.matches(a,f);null===g&&d.children.splice(e,1)}if(d.children.length>0)return d}return""===c.trim(a.term)?d:b.text.toUpperCase().indexOf(a.term.toUpperCase())>-1?d:null},d}),define("select2/data/array",["./select","../utils"],function(a,b){function c(a,b){this.data=b.options.data,c.__super__.constructor.call(this,a,b)}return b.Extend(c,a),c.prototype.select=function(a){var b=this;this.$element.find("option").each(function(){var c=$(this),d=b.item(c);d.id==a.id.toString()&&c.remove()});var d=this.option(a);this.$element.append(d),c.__super__.select.call(this,a)},c.prototype.option=function(a){var b=$("<option></option>");return b.text(a.text),b.val(a.id),b.data("data",a),b},c.prototype.query=function(a,b){var c=[],d=this;$.each(this.data,function(){var b=this;d.matches(a,b)&&c.push(b)}),b(c)},c}),define("select2/data/ajax",["./array","../utils","jquery"],function(a,b,c){function d(b,c){this.ajaxOptions=c.get("ajax"),this.processResults=this.ajaxOptions.processResults||function(a){return a},a.__super__.constructor.call(this,b,c)}return b.Extend(d,a),d.prototype.query=function(a,b){var d=this,e=c.extend({type:"GET"},this.ajaxOptions);"function"==typeof e.url&&(e.url=e.url(a)),"function"==typeof e.data&&(e.data=e.data(a));var f=c.ajax(e);f.success(function(a){var c=d.processResults(a);b(c)})},d}),define("select2/dropdown",["./utils"],function(a){function b(a){this.$element=a}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<span class="dropdown"><span class="results"></span></span>');return a},b.prototype.bind=function(){},b}),define("select2/dropdown/search",[],function(){function a(){}return a.prototype.render=function(a){var b=a.call(this),c=$('<span class="search"><input type="search" name="search" tabindex="-1" role="textbox" /></span>');return this.$searchContainer=c,this.$search=c.find("input"),b.prepend(c),b},a.prototype.bind=function(a,b,c){var d=this;a.call(this,b,c),this.$search.on("keyup",function(){b.trigger("query",{term:$(this).val()})}),b.on("open",function(){d.$search.attr("tabindex",0)}),b.on("close",function(){d.$search.attr("tabindex",-1)}),b.on("results:all",function(a){if(null==a.query.term||""===a.query.term){var b=d.showSearch(a);b?d.$searchContainer.show():d.$searchContainer.hide()}})},a.prototype.showSearch=function(){return!0},a}),define("select2/defaults",["./results","./selection/single","./selection/multiple","./selection/placeholder","./utils","./data/select","./data/array","./data/ajax","./dropdown","./dropdown/search"],function(a,b,c,d,e,f,g,h,i,j){function k(){this.reset()}k.prototype.apply=function(k){if(k=$.extend({},k,this.defaults),null==k.dataAdapter&&(k.dataAdapter=k.ajax?h:k.data?g:f),null==k.resultsAdapter&&(k.resultsAdapter=a),null==k.dropdownAdapter){var l=e.Decorate(i,j);k.dropdownAdapter=l}return null==k.selectionAdapter&&(k.selectionAdapter=k.multiple?c:b,null!=k.placeholder&&(k.selectionAdapter=e.Decorate(k.selectionAdapter,d))),k},k.prototype.reset=function(){this.defaults={}};var l=new k;return l}),define("select2/options",["./defaults"],function(a){function b(b){this.options=a.apply(b)}return b.prototype.fromElement=function(){return this},b.prototype.get=function(a){return this.options[a]},b.prototype.set=function(a,b){this.options[a]=b},b}),define("select2/core",["jquery","./options","./utils"],function(a,b,c){var d=function(a,e){this.$element=a,this.id=null!=a.attr("id")?a.attr("id"):null!=a.attr("name")?a.attr("name")+"-"+c.generateChars(2):c.generateChars(4),this.id="select2-"+this.id,e=e||{},e.multiple=e.multiple||a.prop("multiple"),this.options=new b(e),d.__super__.constructor.call(this);var f=this.options.get("dataAdapter");this.data=new f(a,this.options);var g=this.render();this.$container=g,g.insertAfter(this.$element),g.width(a.outerWidth(!1));var h=this.options.get("selectionAdapter");this.selection=new h(a,this.options);var i=g.find(".selection"),j=this.selection.render();i.append(j);var k=this.options.get("dropdownAdapter");this.dropdown=new k(a,this.options);var l=g.find(".dropdown-wrapper"),m=this.dropdown.render();l.append(m);var n=this.options.get("resultsAdapter");this.results=new n(a,this.options,this.data);var o=m.find(".results"),p=this.results.render();o.append(p);var q=this;this.data.bind(this,g),this.selection.bind(this,g),this.dropdown.bind(this,g),this.results.bind(this,g),this.$element.on("change",function(){q.data.current(function(a){q.trigger("selection:update",{data:a})})}),this.selection.on("open",function(){q.trigger("open")}),this.selection.on("close",function(){q.trigger("close")}),this.selection.on("toggle",function(){q.toggleDropdown()}),this.selection.on("results:select",function(){q.trigger("results:select")}),this.selection.on("results:previous",function(){q.trigger("results:previous")}),this.selection.on("results:next",function(){q.trigger("results:next")}),this.selection.on("unselected",function(a){q.trigger("unselect",a),q.trigger("close")}),this.results.on("selected",function(a){q.trigger("select",a),q.trigger("close")}),this.results.on("unselected",function(a){q.trigger("unselect",a),q.trigger("close")}),this.on("open",function(){g.addClass("open")}),this.on("close",function(){g.removeClass("open")}),this.data.current(function(a){q.trigger("selection:update",{data:a})}),this.on("query",function(a){this.data.query(a,function(b){q.trigger("results:all",{data:b,query:a})})}),this.trigger("query",{}),a.hide(),a.attr("tabindex","-1")};return c.Extend(d,c.Observable),d.prototype.toggleDropdown=function(){this.trigger(this.isOpen()?"close":"open")},d.prototype.isOpen=function(){return this.$container.hasClass("open")},d.prototype.render=function(){var b=a('<span class="select2 select2-container select2-theme-default"><span class="selection"></span><span class="dropdown-wrapper"></span></span>');return b},d}),define("jquery.select2",["jquery","select2/core"],function(a,b){return null==a.fn.select2&&(a.fn.select2=function(c){if(c=c||{},"object"==typeof c)this.each(function(){new b(a(this),c)});else{if("string"!=typeof c)throw new Error("Invalid arguments for Select2: "+c);var d=this.data("select2");d[c](arguments.slice(1))}}),b}),require("jquery.select2");
\ No newline at end of file
diff --git a/dist/js/select2.js b/dist/js/select2.js
index 9997278b..feff06a9 100644
--- a/dist/js/select2.js
+++ b/dist/js/select2.js
@@ -563,6 +563,17 @@ define('select2/utils',[], function () {
 
   Utils.Observable = Observable;
 
+  Utils.generateChars = function (length) {
+    var chars = '';
+
+    for (var i = 0; i < length; i++) {
+      var randomChar = Math.floor(Math.random() * 36);
+      chars += randomChar.toString(36);
+    }
+
+    return chars;
+  };
+
   return Utils;
 });
 
@@ -944,16 +955,6 @@ define('select2/selection/single',[
 
     $selection.attr('title', this.$element.attr('title'));
 
-    var id = 'select2-container-';
-
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
-
-    $selection.find('.rendered-selection').attr('id', id);
-    $selection.attr('aria-labelledby', id);
-
     this.$selection = $selection;
 
     return $selection;
@@ -964,6 +965,11 @@ define('select2/selection/single',[
 
     SingleSelection.__super__.bind.apply(this, arguments);
 
+    var id = container.id + '-container';
+
+    this.$selection.find('.rendered-selection').attr('id', id);
+    this.$selection.attr('aria-labelledby', id);
+
     this.$selection.on('mousedown', function (evt) {
       // Only respond to left clicks
       if (evt.which !== 1) {
@@ -1210,21 +1216,15 @@ define('select2/data/base',[
     // Can be implemented in subclasses
   };
 
-  BaseAdapter.prototype.generateResultId = function (data) {
-    var id = 'select2-result-';
+  BaseAdapter.prototype.generateResultId = function (container, data) {
+    var id = container.id + '-result-';
 
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
+    id += Utils.generateChars(4);
 
     if (data.id != null) {
       id += '-' + data.id.toString();
     } else {
-      for (var s = 0; s < 4; s++) {
-        var idChar = Math.floor(Math.random() * 16);
-        id += idChar.toString(16);
-      }
+      id += '-' + Utils.generateChars(4);
     }
     return id;
   };
@@ -1315,6 +1315,8 @@ define('select2/data/select',[
   SelectAdapter.prototype.bind = function (container, $container) {
     var self = this;
 
+    this.container = container;
+
     container.on('select', function (params) {
       self.select(params.data);
     });
@@ -1381,7 +1383,7 @@ define('select2/data/select',[
       }
 
       if (data.id) {
-        data._resultId = this.generateResultId(data);
+        data._resultId = this.generateResultId(this.container, data);
       }
 
       $option.data('data', data);
@@ -1721,6 +1723,16 @@ define('select2/core',[
   var Select2 = function ($element, options) {
     this.$element = $element;
 
+    if ($element.attr('id') != null) {
+      this.id = $element.attr('id');
+    } else if ($element.attr('name') != null) {
+      this.id = $element.attr('name') + '-' + Utils.generateChars(2);
+    } else {
+      this.id = Utils.generateChars(4);
+    }
+
+    this.id = 'select2-' + this.id;
+
     options = options || {};
 
     options.multiple = options.multiple || $element.prop('multiple');
diff --git a/dist/js/select2.min.js b/dist/js/select2.min.js
index 98397aee..2c76e3b3 100644
--- a/dist/js/select2.min.js
+++ b/dist/js/select2.min.js
@@ -1 +1 @@
-var requirejs,require,define;!function(a){function b(a,b){return r.call(a,b)}function c(a,b){var c,d,e,f,g,h,i,j,k,l,m,n=b&&b.split("/"),o=p.map,q=o&&o["*"]||{};if(a&&"."===a.charAt(0))if(b){for(n=n.slice(0,n.length-1),a=a.split("/"),g=a.length-1,p.nodeIdCompat&&t.test(a[g])&&(a[g]=a[g].replace(t,"")),a=n.concat(a),k=0;k<a.length;k+=1)if(m=a[k],"."===m)a.splice(k,1),k-=1;else if(".."===m){if(1===k&&(".."===a[2]||".."===a[0]))break;k>0&&(a.splice(k-1,2),k-=2)}a=a.join("/")}else 0===a.indexOf("./")&&(a=a.substring(2));if((n||q)&&o){for(c=a.split("/"),k=c.length;k>0;k-=1){if(d=c.slice(0,k).join("/"),n)for(l=n.length;l>0;l-=1)if(e=o[n.slice(0,l).join("/")],e&&(e=e[d])){f=e,h=k;break}if(f)break;!i&&q&&q[d]&&(i=q[d],j=k)}!f&&i&&(f=i,h=j),f&&(c.splice(0,h,f),a=c.join("/"))}return a}function d(b,c){return function(){return k.apply(a,s.call(arguments,0).concat([b,c]))}}function e(a){return function(b){return c(b,a)}}function f(a){return function(b){n[a]=b}}function g(c){if(b(o,c)){var d=o[c];delete o[c],q[c]=!0,j.apply(a,d)}if(!b(n,c)&&!b(q,c))throw new Error("No "+c);return n[c]}function h(a){var b,c=a?a.indexOf("!"):-1;return c>-1&&(b=a.substring(0,c),a=a.substring(c+1,a.length)),[b,a]}function i(a){return function(){return p&&p.config&&p.config[a]||{}}}var j,k,l,m,n={},o={},p={},q={},r=Object.prototype.hasOwnProperty,s=[].slice,t=/\.js$/;l=function(a,b){var d,f=h(a),i=f[0];return a=f[1],i&&(i=c(i,b),d=g(i)),i?a=d&&d.normalize?d.normalize(a,e(b)):c(a,b):(a=c(a,b),f=h(a),i=f[0],a=f[1],i&&(d=g(i))),{f:i?i+"!"+a:a,n:a,pr:i,p:d}},m={require:function(a){return d(a)},exports:function(a){var b=n[a];return"undefined"!=typeof b?b:n[a]={}},module:function(a){return{id:a,uri:"",exports:n[a],config:i(a)}}},j=function(c,e,h,i){var j,k,p,r,s,t,u=[],v=typeof h;if(i=i||c,"undefined"===v||"function"===v){for(e=!e.length&&h.length?["require","exports","module"]:e,s=0;s<e.length;s+=1)if(r=l(e[s],i),k=r.f,"require"===k)u[s]=m.require(c);else if("exports"===k)u[s]=m.exports(c),t=!0;else if("module"===k)j=u[s]=m.module(c);else if(b(n,k)||b(o,k)||b(q,k))u[s]=g(k);else{if(!r.p)throw new Error(c+" missing "+k);r.p.load(r.n,d(i,!0),f(k),{}),u[s]=n[k]}p=h?h.apply(n[c],u):void 0,c&&(j&&j.exports!==a&&j.exports!==n[c]?n[c]=j.exports:p===a&&t||(n[c]=p))}else c&&(n[c]=h)},requirejs=require=k=function(b,c,d,e,f){if("string"==typeof b)return m[b]?m[b](c):g(l(b,c).f);if(!b.splice){if(p=b,p.deps&&k(p.deps,p.callback),!c)return;c.splice?(b=c,c=d,d=null):b=a}return c=c||function(){},"function"==typeof d&&(d=e,e=f),e?j(a,b,c,d):setTimeout(function(){j(a,b,c,d)},4),k},k.config=function(a){return k(a)},requirejs._defined=n,define=function(a,c,d){c.splice||(d=c,c=[]),b(n,a)||b(o,a)||(o[a]=[a,c,d])},define.amd={jQuery:!0}}(),define("almond",function(){}),define("jquery",[],function(){return jQuery}),define("select2/utils",[],function(){function a(a){var b=a.prototype,c=[];for(var d in b){var e=b[d];"function"==typeof e&&c.push(d)}return c}var b={};b.Extend=function(a,b){function c(){this.constructor=a}var d={}.hasOwnProperty;for(var e in b)d.call(b,e)&&(a[e]=b[e]);return c.prototype=b.prototype,a.prototype=new c,a.__super__=b.prototype,a},b.Decorate=function(b,c){function d(){var a=Array.prototype.unshift,d=c.prototype.constructor.length,e=b.prototype.constructor;d>0&&(a.call(arguments,b.prototype.constructor),e=c.prototype.constructor),e.apply(this,arguments)}function e(){this.constructor=d}var f=a(c),g=a(b);c.displayName=b.displayName,d.prototype=new e;for(var h=0;h<g.length;h++){var i=g[h];d.prototype[i]=b.prototype[i]}for(var j=(function(a){var b=function(){};a in d.prototype&&(b=d.prototype[a]);var e=c.prototype[a];return function(){var a=Array.prototype.unshift;return a.call(arguments,b),e.apply(this,arguments)}}),k=0;k<f.length;k++){var l=f[k];d.prototype[l]=j(l)}return d};var c=function(){this.listeners={}};return c.prototype.on=function(a,b){a in this.listeners?this.listeners[a].push(b):this.listeners[a]=[b]},c.prototype.trigger=function(a){var b=Array.prototype.slice;a in this.listeners&&this.invoke(this.listeners[a],b.call(arguments,1)),"*"in this.listeners&&this.invoke(this.listeners["*"],arguments)},c.prototype.invoke=function(a,b){for(var c=0,d=a.length;d>c;c++)a[c].apply(this,b)},b.Observable=c,b}),define("select2/results",["./utils"],function(a){function b(a,c,d){this.$element=a,this.data=d,b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<ul class="options" role="listbox"></ul>');return this.$results=a,a},b.prototype.clear=function(){this.$results.empty()},b.prototype.append=function(a){var b=[];a=this.sort(a);for(var c=0;c<a.length;c++){var d=a[c],e=this.option(d);b.push(e)}this.$results.append(b)},b.prototype.sort=function(a){return a},b.prototype.setClasses=function(){var a=this;this.data.current(function(b){var c=$.map(b,function(a){return a.id.toString()}),d=a.$results.find(".option[aria-selected]");d.each(function(){var a=$(this),b=a.data("data");null!=b.id&&c.indexOf(b.id.toString())>-1?a.attr("aria-selected","true"):a.attr("aria-selected","false")});var e=d.filter("[aria-selected=true]");e.length>0?e.first().trigger("mouseenter"):d.first().trigger("mouseenter")})},b.prototype.option=function(a){var b=$('<li class="option" role="option" aria-selected="false"></li>');if(a.children){b.addClass("group").removeAttr("aria-selected");var c=$('<strong class="group-label"></strong>');c.html(a.text);for(var d=[],e=0;e<a.children.length;e++){var f=a.children[e],g=this.option(f);d.push(g)}var h=$('<ul class="options nested-options"></ul>');h.append(d),b.append(c),b.append(h)}else b.html(a.text);return a.disabled&&b.removeAttr("aria-selected").attr("aria-disabled","true"),null==a.id&&b.removeAttr("aria-selected"),null!=a._resultId&&b.attr("id",a._resultId),b.data("data",a),b},b.prototype.bind=function(a){var b=this;a.on("results:all",function(a){b.clear(),b.append(a.data),b.setClasses()}),a.on("results:append",function(a){b.append(a.data),b.setClasses()}),a.on("select",function(){b.setClasses()}),a.on("unselect",function(){b.setClasses()}),a.on("open",function(){b.$results.attr("aria-expanded","true"),b.setClasses()}),a.on("close",function(){b.$results.attr("aria-expanded","false")}),a.on("results:select",function(){var a=b.$results.find(".highlighted");if(0!==a.length){var c=a.data("data");"true"==a.attr("aria-selected")?b.trigger("unselected",{data:c}):b.trigger("selected",{data:c})}}),a.on("results:previous",function(){var a=b.$results.find(".highlighted"),c=b.$results.find("[aria-selected]"),d=c.index(a);if(0!==d){var e=d-1;0===a.length&&(e=0);var f=c.eq(e);f.trigger("mouseenter");var g=b.$results.offset().top,h=f.offset().top,i=b.$results.scrollTop()+(h-g);0===e?b.$results.scrollTop(0):0>h-g&&b.$results.scrollTop(i)}}),a.on("results:next",function(){var 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a.Extend(b,a.Observable),b.prototype.render=function(){throw new Error("The `render` method must be defined in child classes.")},b.prototype.bind=function(a){var b=this;a.on("selection:update",function(a){b.update(a.data)})},b.prototype.update=function(){throw new Error("The `update` method must be defined in child classes.")},b}),define("select2/keys",[],function(){var a={BACKSPACE:8,TAB:9,ENTER:13,SHIFT:16,CTRL:17,ALT:18,ESC:27,SPACE:32,PAGE_UP:33,PAGE_DOWN:34,END:35,HOME:36,LEFT:37,UP:38,RIGHT:39,DOWN:40,DELETE:46,isArrow:function(a){switch(a=a.which?a.which:a){case KEY.LEFT:case KEY.RIGHT:case KEY.UP:case KEY.DOWN:return!0}return!1}};return a}),define("select2/selection/single",["./base","../utils","../keys"],function(a,b,c){function d(){d.__super__.constructor.apply(this,arguments)}return b.Extend(d,a),d.prototype.render=function(){var a=$('<span class="single-select" tabindex="0" role="combobox" aria-autocomplete="list" aria-haspopup="true" aria-expanded="false"><span 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a.disabled&&b.removeAttr("aria-selected").attr("aria-disabled","true"),null==a.id&&b.removeAttr("aria-selected"),null!=a._resultId&&b.attr("id",a._resultId),b.data("data",a),b},b.prototype.bind=function(a){var b=this;a.on("results:all",function(a){b.clear(),b.append(a.data),b.setClasses()}),a.on("results:append",function(a){b.append(a.data),b.setClasses()}),a.on("select",function(){b.setClasses()}),a.on("unselect",function(){b.setClasses()}),a.on("open",function(){b.$results.attr("aria-expanded","true"),b.setClasses()}),a.on("close",function(){b.$results.attr("aria-expanded","false")}),a.on("results:select",function(){var a=b.$results.find(".highlighted");if(0!==a.length){var c=a.data("data");"true"==a.attr("aria-selected")?b.trigger("unselected",{data:c}):b.trigger("selected",{data:c})}}),a.on("results:previous",function(){var a=b.$results.find(".highlighted"),c=b.$results.find("[aria-selected]"),d=c.index(a);if(0!==d){var e=d-1;0===a.length&&(e=0);var f=c.eq(e);f.trigger("mouseenter");var g=b.$results.offset().top,h=f.offset().top,i=b.$results.scrollTop()+(h-g);0===e?b.$results.scrollTop(0):0>h-g&&b.$results.scrollTop(i)}}),a.on("results:next",function(){var a=b.$results.find(".highlighted"),c=b.$results.find("[aria-selected]"),d=c.index(a),e=d+1;if(!(e>=c.length)){var f=c.eq(e);f.trigger("mouseenter");var g=b.$results.offset().top+b.$results.outerHeight(!1),h=f.offset().top+f.outerHeight(!1),i=b.$results.scrollTop()+h-g;0===e?b.$results.scrollTop(0):h>g&&b.$results.scrollTop(i)}}),this.$results.on("mouseup",".option[aria-selected]",function(a){var c=$(this),d=c.data("data");return"true"===c.attr("aria-selected")?void b.trigger("unselected",{originalEvent:a,data:d}):void b.trigger("selected",{originalEvent:a,data:d})}),this.$results.on("mouseenter",".option[aria-selected]",function(){b.$results.find(".option.highlighted").removeClass("highlighted"),$(this).addClass("highlighted")}),this.$results.on("mouseleave",".option",function(){$(this).removeClass("highlighted")})},b}),define("select2/selection/base",["../utils"],function(a){function b(a,c){this.$element=a,this.options=c,b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.render=function(){throw new Error("The `render` method must be defined in child classes.")},b.prototype.bind=function(a){var b=this;a.on("selection:update",function(a){b.update(a.data)})},b.prototype.update=function(){throw new Error("The `update` method must be defined in child classes.")},b}),define("select2/keys",[],function(){var a={BACKSPACE:8,TAB:9,ENTER:13,SHIFT:16,CTRL:17,ALT:18,ESC:27,SPACE:32,PAGE_UP:33,PAGE_DOWN:34,END:35,HOME:36,LEFT:37,UP:38,RIGHT:39,DOWN:40,DELETE:46,isArrow:function(a){switch(a=a.which?a.which:a){case KEY.LEFT:case KEY.RIGHT:case KEY.UP:case KEY.DOWN:return!0}return!1}};return a}),define("select2/selection/single",["./base","../utils","../keys"],function(a,b,c){function d(){d.__super__.constructor.apply(this,arguments)}return b.Extend(d,a),d.prototype.render=function(){var a=$('<span class="single-select" tabindex="0" role="combobox" aria-autocomplete="list" aria-haspopup="true" aria-expanded="false"><span class="rendered-selection"></span></span>');a.attr("title",this.$element.attr("title"));var c="select2-container-"+b.generateChars(4);return a.find(".rendered-selection").attr("id",c),a.attr("aria-labelledby",c),this.$selection=a,a},d.prototype.bind=function(a){var b=this;d.__super__.bind.apply(this,arguments),this.$selection.on("mousedown",function(a){1===a.which&&b.trigger("toggle",{originalEvent:a})}),a.on("open",function(){b.$selection.attr("aria-expanded","true")}),a.on("close",function(){b.$selection.attr("aria-expanded","false")}),this.$selection.on("focus",function(){}),this.$selection.on("blur",function(){}),this.$selection.on("keydown",function(d){var e=d.which;a.isOpen()?e==c.ENTER?b.trigger("results:select"):e==c.UP?(b.trigger("results:previous"),d.preventDefault()):e==c.DOWN&&(b.trigger("results:next"),d.preventDefault()):(e==c.ENTER||e==c.SPACE)&&b.trigger("open")}),a.on("selection:update",function(a){b.update(a.data)})},d.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},d.prototype.display=function(a){return a.text},d.prototype.selectionContainer=function(){return $("<span></span>")},d.prototype.update=function(a){if(0===a.length)return void this.clear();var b=a[0],c=this.display(b);this.$selection.find(".rendered-selection").html(c),null!=a[0]._resultId&&this.$selection.attr("aria-activedescendent",a[0]._resultId)},d}),define("select2/selection/multiple",["./base","../utils"],function(a,b){function c(a,b){this.$element=a,this.options=b,c.__super__.constructor.call(this)}return b.Extend(c,a),c.prototype.render=function(){var a=$('<span class="multiple-select"><ul class="rendered-selection"></ul></span>');return this.$selection=a,a},c.prototype.bind=function(){var a=this;c.__super__.bind.apply(this,arguments),this.$selection.on("click",function(b){a.trigger("toggle",{originalEvent:b})}),this.$selection.on("click",".remove",function(b){var c=$(this),d=c.parent(),e=d.data("data");a.trigger("unselected",{originalEvent:b,data:e})})},c.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},c.prototype.display=function(a){return a.text},c.prototype.selectionContainer=function(){var a=$('<li class="choice"><span class="remove" role="presentation">&times;</span></li>');return a},c.prototype.update=function(a){if(this.clear(),0!==a.length){for(var b=[],c=0;c<a.length;c++){var d=a[c],e=this.display(d),f=this.selectionContainer();f.append(e),f.data("data",d),b.push(f)}this.$selection.find(".rendered-selection").append(b)}},c}),define("select2/selection/placeholder",["../utils"],function(){function a(a,b,c){this.placeholder=this.normalizePlaceholder(c.get("placeholder")),a.call(this,b,c)}return a.prototype.normalizePlaceholder=function(a,b){return"string"==typeof b&&(b={id:"",text:b}),b},a.prototype.update=function(a,b){var c=1==b.length&&b[0].id!=this.placeholder.id,d=b.length>1;if(d||c)return a.call(this,b);this.clear();var e=this.selectionContainer();e.html(this.display(this.placeholder)),e.addClass("placeholder").removeClass("choice"),this.$selection.find(".rendered-selection").append(e)},a}),define("select2/data/base",["../utils"],function(a){function b(){b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.current=function(){throw new Error("The `current` method must be defined in child classes.")},b.prototype.query=function(){throw new Error("The `query` method must be defined in child classes.")},b.prototype.bind=function(){},b.prototype.generateResultId=function(b){var c="select2-result-";return c+=a.generateChars(4),c+=null!=b.id?"-"+b.id.toString():"-"+a.generateChars(4)},b}),define("select2/data/select",["./base","../utils","jquery"],function(a,b,c){function d(a){this.$element=a,d.__super__.constructor.call(this)}return b.Extend(d,a),d.prototype.current=function(a){var b=[],d=this;this.$element.find(":selected").each(function(){var a=c(this),e=d.item(a);b.push(e)}),a(b)},d.prototype.select=function(a){var b=this;if(this.$element.prop("multiple"))this.current(function(c){var d=[];a=[a],a.push.apply(a,c);for(var e=0;e<a.length;e++)id=a[e].id,-1===d.indexOf(id)&&d.push(id);b.$element.val(d),b.$element.trigger("change")});else{var c=a.id;this.$element.val(c),this.$element.trigger("change")}},d.prototype.unselect=function(a){var b=this;this.$element.prop("multiple")&&this.current(function(c){for(var d=[],e=0;e<c.length;e++)id=c[e].id,id!==a.id&&-1===d.indexOf(id)&&d.push(id);b.$element.val(d),b.$element.trigger("change")})},d.prototype.bind=function(a){var b=this;a.on("select",function(a){b.select(a.data)}),a.on("unselect",function(a){b.unselect(a.data)})},d.prototype.query=function(a,b){var d=[],e=this,f=this.$element.children();f.each(function(){var b=c(this);if(b.is("option")||b.is("optgroup")){var f=e.item(b),g=e.matches(a,f);null!==g&&d.push(g)}}),b(d)},d.prototype.item=function(a){var b=a.data("data");if(null==b){if(a.is("option"))b={id:a.val(),text:a.html(),disabled:a.prop("disabled")};else if(a.is("optgroup")){b={text:a.attr("label"),children:[]};for(var d=a.children("option"),e=[],f=0;f<d.length;f++){var g=c(d[f]),h=this.item(g);e.push(h)}b.children=e}b.id&&(b._resultId=this.generateResultId(b)),a.data("data",b)}return b},d.prototype.matches=function(a,b){var d=c.extend(!0,{},b);if(b.children){for(var e=b.children.length-1;e>=0;e--){var f=b.children[e],g=this.matches(a,f);null===g&&d.children.splice(e,1)}if(d.children.length>0)return d}return""===c.trim(a.term)?d:b.text.toUpperCase().indexOf(a.term.toUpperCase())>-1?d:null},d}),define("select2/data/array",["./select","../utils"],function(a,b){function c(a,b){this.data=b.options.data,c.__super__.constructor.call(this,a,b)}return b.Extend(c,a),c.prototype.select=function(a){var b=this;this.$element.find("option").each(function(){var c=$(this),d=b.item(c);d.id==a.id.toString()&&c.remove()});var d=this.option(a);this.$element.append(d),c.__super__.select.call(this,a)},c.prototype.option=function(a){var b=$("<option></option>");return b.text(a.text),b.val(a.id),b.data("data",a),b},c.prototype.query=function(a,b){var c=[],d=this;$.each(this.data,function(){var b=this;d.matches(a,b)&&c.push(b)}),b(c)},c}),define("select2/data/ajax",["./array","../utils","jquery"],function(a,b,c){function d(b,c){this.ajaxOptions=c.get("ajax"),this.processResults=this.ajaxOptions.processResults||function(a){return a},a.__super__.constructor.call(this,b,c)}return b.Extend(d,a),d.prototype.query=function(a,b){var d=this,e=c.extend({type:"GET"},this.ajaxOptions);"function"==typeof e.url&&(e.url=e.url(a)),"function"==typeof e.data&&(e.data=e.data(a));var f=c.ajax(e);f.success(function(a){var c=d.processResults(a);b(c)})},d}),define("select2/dropdown",["./utils"],function(a){function b(a){this.$element=a}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<span class="dropdown"><span class="results"></span></span>');return a},b.prototype.bind=function(){},b}),define("select2/dropdown/search",[],function(){function a(){}return a.prototype.render=function(a){var b=a.call(this),c=$('<span class="search"><input type="search" name="search" tabindex="-1" role="textbox" /></span>');return this.$searchContainer=c,this.$search=c.find("input"),b.prepend(c),b},a.prototype.bind=function(a,b,c){var d=this;a.call(this,b,c),this.$search.on("keyup",function(){b.trigger("query",{term:$(this).val()})}),b.on("open",function(){d.$search.attr("tabindex",0)}),b.on("close",function(){d.$search.attr("tabindex",-1)}),b.on("results:all",function(a){if(null==a.query.term||""===a.query.term){var b=d.showSearch(a);b?d.$searchContainer.show():d.$searchContainer.hide()}})},a.prototype.showSearch=function(){return!0},a}),define("select2/defaults",["./results","./selection/single","./selection/multiple","./selection/placeholder","./utils","./data/select","./data/array","./data/ajax","./dropdown","./dropdown/search"],function(a,b,c,d,e,f,g,h,i,j){function k(){this.reset()}k.prototype.apply=function(k){if(k=$.extend({},k,this.defaults),null==k.dataAdapter&&(k.dataAdapter=k.ajax?h:k.data?g:f),null==k.resultsAdapter&&(k.resultsAdapter=a),null==k.dropdownAdapter){var l=e.Decorate(i,j);k.dropdownAdapter=l}return null==k.selectionAdapter&&(k.selectionAdapter=k.multiple?c:b,null!=k.placeholder&&(k.selectionAdapter=e.Decorate(k.selectionAdapter,d))),k},k.prototype.reset=function(){this.defaults={}};var l=new k;return l}),define("select2/options",["./defaults"],function(a){function b(b){this.options=a.apply(b)}return b.prototype.fromElement=function(){return this},b.prototype.get=function(a){return this.options[a]},b.prototype.set=function(a,b){this.options[a]=b},b}),define("select2/core",["jquery","./options","./utils"],function(a,b,c){var d=function(a,e){this.$element=a,this.id=null!=a.attr("id")?a.attr("id"):null!=a.attr("name")?a.attr("name")+"-"+c.generateChars(2):c.generateChars(4),this.id="select2-"+this.id,e=e||{},e.multiple=e.multiple||a.prop("multiple"),this.options=new b(e),d.__super__.constructor.call(this);var f=this.options.get("dataAdapter");this.data=new f(a,this.options);var g=this.render();this.$container=g,g.insertAfter(this.$element),g.width(a.outerWidth(!1));var h=this.options.get("selectionAdapter");this.selection=new h(a,this.options);var i=g.find(".selection"),j=this.selection.render();i.append(j);var k=this.options.get("dropdownAdapter");this.dropdown=new k(a,this.options);var l=g.find(".dropdown-wrapper"),m=this.dropdown.render();l.append(m);var n=this.options.get("resultsAdapter");this.results=new n(a,this.options,this.data);var o=m.find(".results"),p=this.results.render();o.append(p);var q=this;this.data.bind(this,g),this.selection.bind(this,g),this.dropdown.bind(this,g),this.results.bind(this,g),this.$element.on("change",function(){q.data.current(function(a){q.trigger("selection:update",{data:a})})}),this.selection.on("open",function(){q.trigger("open")}),this.selection.on("close",function(){q.trigger("close")}),this.selection.on("toggle",function(){q.toggleDropdown()}),this.selection.on("results:select",function(){q.trigger("results:select")}),this.selection.on("results:previous",function(){q.trigger("results:previous")}),this.selection.on("results:next",function(){q.trigger("results:next")}),this.selection.on("unselected",function(a){q.trigger("unselect",a),q.trigger("close")}),this.results.on("selected",function(a){q.trigger("select",a),q.trigger("close")}),this.results.on("unselected",function(a){q.trigger("unselect",a),q.trigger("close")}),this.on("open",function(){g.addClass("open")}),this.on("close",function(){g.removeClass("open")}),this.data.current(function(a){q.trigger("selection:update",{data:a})}),this.on("query",function(a){this.data.query(a,function(b){q.trigger("results:all",{data:b,query:a})})}),this.trigger("query",{}),a.hide(),a.attr("tabindex","-1")};return c.Extend(d,c.Observable),d.prototype.toggleDropdown=function(){this.trigger(this.isOpen()?"close":"open")},d.prototype.isOpen=function(){return this.$container.hasClass("open")},d.prototype.render=function(){var b=a('<span class="select2 select2-container select2-theme-default"><span class="selection"></span><span class="dropdown-wrapper"></span></span>');return b},d}),define("jquery.select2",["jquery","select2/core"],function(a,b){return null==a.fn.select2&&(a.fn.select2=function(c){if(c=c||{},"object"==typeof c)this.each(function(){new b(a(this),c)});else{if("string"!=typeof c)throw new Error("Invalid arguments for Select2: "+c);var d=this.data("select2");d[c](arguments.slice(1))}}),b}),require("jquery.select2");
\ No newline at end of file
diff --git a/src/js/select2/core.js b/src/js/select2/core.js
index bec631a4..685820d8 100644
--- a/src/js/select2/core.js
+++ b/src/js/select2/core.js
@@ -6,6 +6,16 @@ define([
   var Select2 = function ($element, options) {
     this.$element = $element;
 
+    if ($element.attr('id') != null) {
+      this.id = $element.attr('id');
+    } else if ($element.attr('name') != null) {
+      this.id = $element.attr('name') + '-' + Utils.generateChars(2);
+    } else {
+      this.id = Utils.generateChars(4);
+    }
+
+    this.id = 'select2-' + this.id;
+
     options = options || {};
 
     options.multiple = options.multiple || $element.prop('multiple');
diff --git a/src/js/select2/data/base.js b/src/js/select2/data/base.js
index 680e841c..f8e47035 100644
--- a/src/js/select2/data/base.js
+++ b/src/js/select2/data/base.js
@@ -19,21 +19,15 @@ define([
     // Can be implemented in subclasses
   };
 
-  BaseAdapter.prototype.generateResultId = function (data) {
-    var id = 'select2-result-';
+  BaseAdapter.prototype.generateResultId = function (container, data) {
+    var id = container.id + '-result-';
 
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
+    id += Utils.generateChars(4);
 
     if (data.id != null) {
       id += '-' + data.id.toString();
     } else {
-      for (var s = 0; s < 4; s++) {
-        var idChar = Math.floor(Math.random() * 16);
-        id += idChar.toString(16);
-      }
+      id += '-' + Utils.generateChars(4);
     }
     return id;
   };
diff --git a/src/js/select2/data/select.js b/src/js/select2/data/select.js
index 79fdfc98..f7c3cd39 100644
--- a/src/js/select2/data/select.js
+++ b/src/js/select2/data/select.js
@@ -81,6 +81,8 @@ define([
   SelectAdapter.prototype.bind = function (container, $container) {
     var self = this;
 
+    this.container = container;
+
     container.on('select', function (params) {
       self.select(params.data);
     });
@@ -147,7 +149,7 @@ define([
       }
 
       if (data.id) {
-        data._resultId = this.generateResultId(data);
+        data._resultId = this.generateResultId(this.container, data);
       }
 
       $option.data('data', data);
diff --git a/src/js/select2/selection/single.js b/src/js/select2/selection/single.js
index 58a35769..cfe96783 100644
--- a/src/js/select2/selection/single.js
+++ b/src/js/select2/selection/single.js
@@ -19,16 +19,6 @@ define([
 
     $selection.attr('title', this.$element.attr('title'));
 
-    var id = 'select2-container-';
-
-    for (var i = 0; i < 4; i++) {
-      var r = Math.floor(Math.random() * 16);
-      id += r.toString(16);
-    }
-
-    $selection.find('.rendered-selection').attr('id', id);
-    $selection.attr('aria-labelledby', id);
-
     this.$selection = $selection;
 
     return $selection;
@@ -39,6 +29,11 @@ define([
 
     SingleSelection.__super__.bind.apply(this, arguments);
 
+    var id = container.id + '-container';
+
+    this.$selection.find('.rendered-selection').attr('id', id);
+    this.$selection.attr('aria-labelledby', id);
+
     this.$selection.on('mousedown', function (evt) {
       // Only respond to left clicks
       if (evt.which !== 1) {
diff --git a/src/js/select2/utils.js b/src/js/select2/utils.js
index 13fe5ff5..9ef1ae97 100644
--- a/src/js/select2/utils.js
+++ b/src/js/select2/utils.js
@@ -134,5 +134,16 @@ define([], function () {
 
   Utils.Observable = Observable;
 
+  Utils.generateChars = function (length) {
+    var chars = '';
+
+    for (var i = 0; i < length; i++) {
+      var randomChar = Math.floor(Math.random() * 36);
+      chars += randomChar.toString(36);
+    }
+
+    return chars;
+  };
+
   return Utils;
 });