From 3d1dc367111a3cd2cb591e387cbf789174d17f91 Mon Sep 17 00:00:00 2001
From: Kevin Brown <kevin@kevinbrown.in>
Date: Thu, 16 Oct 2014 19:59:38 -0400
Subject: [PATCH] Added support for placeholders

Placeholder support has been implemented as a separate module, so
any selection container should be able to be decorated and get
instant placeholder support. It hooks into the updating method of
selections, and determines when to display the placeholder based
on the options that are being updated.

It works in the same way as the old placeholders. If no options
are selected and being displayed, like in the case of a multiple
select, then the placeholder will always be shown.  If one option
is being displayed, and the id of the placeholder matches the id
of the selected element, then the placeholder will be shown.  This
is similar to the functionality that was present in Select2 2.x,
where the placeholder could be passed in as an object that would
be compared to the selection.

This still requires that, for single selects, the first element
must match the placeholder id.  Because the default placeholder id
is a blank string, this will maintain backwards compatibility with
past versions where the first option should be blank.  This can
still be overridden to point at a different id, keeping support
for systems where the placeholder doesn't use a blank value.

**Note:** This does not hide the blank option for single selects,
but that will still be maintained for backwards compatibility
within the results module.  It will not depend on a placeholder
being present, but instead will hide any options with blank text.
---
 dist/css/select2.css                    |  7 ++-
 dist/css/select2.min.css                |  2 +-
 dist/js/select2.amd.full.js             | 66 ++++++++++++++++++++++++-
 dist/js/select2.amd.js                  | 66 ++++++++++++++++++++++++-
 dist/js/select2.full.js                 | 66 ++++++++++++++++++++++++-
 dist/js/select2.full.min.js             |  4 +-
 dist/js/select2.js                      | 66 ++++++++++++++++++++++++-
 dist/js/select2.min.js                  |  2 +-
 docs/examples.html                      |  6 ++-
 src/js/select2/defaults.js              | 13 ++++-
 src/js/select2/selection/multiple.js    |  6 ++-
 src/js/select2/selection/placeholder.js | 42 ++++++++++++++++
 src/js/select2/selection/single.js      |  4 ++
 src/scss/theme/default/layout.scss      | 12 ++++-
 14 files changed, 344 insertions(+), 18 deletions(-)
 create mode 100644 src/js/select2/selection/placeholder.js

diff --git a/dist/css/select2.css b/dist/css/select2.css
index 55d43aa3..4e73291c 100644
--- a/dist/css/select2.css
+++ b/dist/css/select2.css
@@ -66,12 +66,14 @@
   left: 0; }
 
 .select2-container.select2-theme-default .selection .single-select {
-  background-color: #eee;
+  background-color: #fff;
   border: 1px solid #aaa;
   border-radius: 4px; }
   .select2-container.select2-theme-default .selection .single-select .rendered-selection {
     color: #444;
     line-height: 28px; }
+    .select2-container.select2-theme-default .selection .single-select .rendered-selection .placeholder {
+      color: #999; }
 .select2-container.select2-theme-default .selection .multiple-select {
   background-color: white;
   border: 1px solid #aaa;
@@ -81,6 +83,9 @@
     margin: 0;
     padding: 5px;
     padding-bottom: 0; }
+    .select2-container.select2-theme-default .selection .multiple-select .rendered-selection .placeholder {
+      color: #999;
+      float: left; }
     .select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice {
       background-color: #e4e4e4;
       border: 1px solid #aaa;
diff --git a/dist/css/select2.min.css b/dist/css/select2.min.css
index fefa50a2..bd245167 100644
--- a/dist/css/select2.min.css
+++ b/dist/css/select2.min.css
@@ -1 +1 @@
-.select2-container{box-sizing:border-box;display:inline-block;margin:0;position:relative;vertical-align:middle;}.select2-container .selection .single-select{box-sizing:border-box;cursor:pointer;display:block;height:28px;user-select:none;-webkit-user-select:none;}.select2-container .selection .single-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .selection .multiple-select{box-sizing:border-box;cursor:pointer;display:block;min-height:32px;user-select:none;-webkit-user-select:none;}.select2-container .selection .multiple-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .dropdown{background-color:white;border:1px solid #aaa;border-radius:4px;box-sizing:border-box;display:block;position:absolute;left:-100000px;width:100%;z-index:100;}.select2-container .dropdown .search{display:block;padding:4px;}.select2-container .dropdown .search input{outline:0;padding:4px;width:100%;}.select2-container .dropdown .results{display:block;}.select2-container .dropdown .results .options{list-style:none;margin:0;padding:0;}.select2-container .dropdown .results .options .option{cursor:pointer;padding:6px;user-select:none;-webkit-user-select:none;}.select2-container.open .dropdown{border-top:none;border-top-left-radius:0;border-top-right-radius:0;left:0;}.select2-container.select2-theme-default .selection .single-select{background-color:#eee;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .single-select .rendered-selection{color:#444;line-height:28px;}.select2-container.select2-theme-default .selection .multiple-select{background-color:white;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection{list-style:none;margin:0;padding:5px;padding-bottom:0;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice{background-color:#e4e4e4;border:1px solid #aaa;border-radius:4px;float:left;margin-right:5px;margin-bottom:5px;padding:0 5px;}.select2-container.select2-theme-default.open .selection .single-select,.select2-container.select2-theme-default.open .selection .multiple-select{border-bottom-left-radius:0;border-bottom-right-radius:0;}.select2-container.select2-theme-default .dropdown .search input{border:1px solid #aaa;}.select2-container.select2-theme-default .dropdown .results{max-height:200px;overflow-y:scroll;}.select2-container.select2-theme-default .dropdown .results .options .option.group{padding:0;}.select2-container.select2-theme-default .dropdown .results .options .option.group .group-label{cursor:default;display:block;padding:6px;}.select2-container.select2-theme-default .dropdown .results .options .option.disabled{color:#666;}.select2-container.select2-theme-default .dropdown .results .options .option.selected{background-color:#ddd;}.select2-container.select2-theme-default .dropdown .results .options .option.highlightable.highlighted{background-color:#5897fb;color:white;}.s2-container{margin:0;position:relative;zoom:1;vertical-align:middle;}.s2-container.s2-active{border:1px solid #5897fb;border-top:bottom;}.s2-container .s2-single-select{display:block;height:26px;padding:0 0 0 8px;overflow:hidden;position:relative;border:1px solid #aaa;white-space:nowrap;line-height:26px;color:#444;text-decoration:none;border-radius:4px;background-clip:padding-box;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;background-color:#fff;background-image:-webkit-gradient(linear, left bottom, left top, color-stop(0, #eee), color-stop(0.5, #fff));background-image:-webkit-linear-gradient(center bottom, #eee 0%, #fff 50%);background-image:-moz-linear-gradient(center bottom, #eee 0%, #fff 50%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr = '#ffffff', endColorstr = '#eeeeee', GradientType = 0);background-image:linear-gradient(to top, #eee 0%, #fff 50%);}.s2-container .s2-single-select .s2-selection{margin-right:26px;display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}.s2-container .s2-open .select2-container-active .select2-choice,.s2-container .s2-open .select2-container-active .select2-choices{border:1px solid #5897fb;outline:none;-webkit-box-shadow:0 0 5px rgba(0, 0, 0, 0.3);box-shadow:0 0 5px rgba(0, 0, 0, 0.3);}.s2-search input{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;}.s2-dropdown{width:100%;margin-top:-1px;position:absolute;z-index:9999;overflow:scroll;background:#fff;color:#000;border:1px solid #5897fb;border-top:none;border-radius:0 0 4px 4px;-webkit-box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);}.s2-hidden{display:none;}
\ No newline at end of file
+.select2-container{box-sizing:border-box;display:inline-block;margin:0;position:relative;vertical-align:middle;}.select2-container .selection .single-select{box-sizing:border-box;cursor:pointer;display:block;height:28px;user-select:none;-webkit-user-select:none;}.select2-container .selection .single-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .selection .multiple-select{box-sizing:border-box;cursor:pointer;display:block;min-height:32px;user-select:none;-webkit-user-select:none;}.select2-container .selection .multiple-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .dropdown{background-color:white;border:1px solid #aaa;border-radius:4px;box-sizing:border-box;display:block;position:absolute;left:-100000px;width:100%;z-index:100;}.select2-container .dropdown .search{display:block;padding:4px;}.select2-container .dropdown .search input{outline:0;padding:4px;width:100%;}.select2-container .dropdown .results{display:block;}.select2-container .dropdown .results .options{list-style:none;margin:0;padding:0;}.select2-container .dropdown .results .options .option{cursor:pointer;padding:6px;user-select:none;-webkit-user-select:none;}.select2-container.open .dropdown{border-top:none;border-top-left-radius:0;border-top-right-radius:0;left:0;}.select2-container.select2-theme-default .selection .single-select{background-color:#fff;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .single-select .rendered-selection{color:#444;line-height:28px;}.select2-container.select2-theme-default .selection .single-select .rendered-selection .placeholder{color:#999;}.select2-container.select2-theme-default .selection .multiple-select{background-color:white;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection{list-style:none;margin:0;padding:5px;padding-bottom:0;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .placeholder{color:#999;float:left;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice{background-color:#e4e4e4;border:1px solid #aaa;border-radius:4px;float:left;margin-right:5px;margin-bottom:5px;padding:0 5px;}.select2-container.select2-theme-default.open .selection .single-select,.select2-container.select2-theme-default.open .selection .multiple-select{border-bottom-left-radius:0;border-bottom-right-radius:0;}.select2-container.select2-theme-default .dropdown .search input{border:1px solid #aaa;}.select2-container.select2-theme-default .dropdown .results{max-height:200px;overflow-y:scroll;}.select2-container.select2-theme-default .dropdown .results .options .option.group{padding:0;}.select2-container.select2-theme-default .dropdown .results .options .option.group .group-label{cursor:default;display:block;padding:6px;}.select2-container.select2-theme-default .dropdown .results .options .option.disabled{color:#666;}.select2-container.select2-theme-default .dropdown .results .options .option.selected{background-color:#ddd;}.select2-container.select2-theme-default .dropdown .results .options .option.highlightable.highlighted{background-color:#5897fb;color:white;}.s2-container{margin:0;position:relative;zoom:1;vertical-align:middle;}.s2-container.s2-active{border:1px solid #5897fb;border-top:bottom;}.s2-container .s2-single-select{display:block;height:26px;padding:0 0 0 8px;overflow:hidden;position:relative;border:1px solid #aaa;white-space:nowrap;line-height:26px;color:#444;text-decoration:none;border-radius:4px;background-clip:padding-box;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;background-color:#fff;background-image:-webkit-gradient(linear, left bottom, left top, color-stop(0, #eee), color-stop(0.5, #fff));background-image:-webkit-linear-gradient(center bottom, #eee 0%, #fff 50%);background-image:-moz-linear-gradient(center bottom, #eee 0%, #fff 50%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr = '#ffffff', endColorstr = '#eeeeee', GradientType = 0);background-image:linear-gradient(to top, #eee 0%, #fff 50%);}.s2-container .s2-single-select .s2-selection{margin-right:26px;display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}.s2-container .s2-open .select2-container-active .select2-choice,.s2-container .s2-open .select2-container-active .select2-choices{border:1px solid #5897fb;outline:none;-webkit-box-shadow:0 0 5px rgba(0, 0, 0, 0.3);box-shadow:0 0 5px rgba(0, 0, 0, 0.3);}.s2-search input{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;}.s2-dropdown{width:100%;margin-top:-1px;position:absolute;z-index:9999;overflow:scroll;background:#fff;color:#000;border:1px solid #5897fb;border-top:none;border-radius:0 0 4px 4px;-webkit-box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);}.s2-hidden{display:none;}
\ No newline at end of file
diff --git a/dist/js/select2.amd.full.js b/dist/js/select2.amd.full.js
index 9d6409a8..531fecc5 100644
--- a/dist/js/select2.amd.full.js
+++ b/dist/js/select2.amd.full.js
@@ -353,6 +353,10 @@ define('select2/selection/single',[
     return data.text;
   };
 
+  SingleSelection.prototype.selectionContainer = function () {
+    return $('<span></span>');
+  };
+
   SingleSelection.prototype.update = function (data) {
     if (data.length === 0) {
       this.clear();
@@ -415,6 +419,10 @@ define('select2/selection/multiple',[
     return data.text;
   };
 
+  MultipleSelection.prototype.selectionContainer = function () {
+    return $('<li class="choice"></li>');
+  };
+
   MultipleSelection.prototype.update = function (data) {
     this.clear();
 
@@ -429,7 +437,7 @@ define('select2/selection/multiple',[
 
       var formatted = this.display(selection);
 
-      var $selection = $('<ul class="choice"></ul>');
+      var $selection = this.selectionContainer();
 
       $selection.text(formatted);
       $selection.data('data', data);
@@ -443,6 +451,49 @@ define('select2/selection/multiple',[
   return MultipleSelection;
 });
 
+define('select2/selection/placeholder',[
+  '../utils'
+], function (Utils) {
+  function Placeholder (decorated, $element, options) {
+    this.placeholder = this.normalizePlaceholder(options.get('placeholder'));
+
+    decorated.call(this, $element, options);
+  }
+
+  Placeholder.prototype.normalizePlaceholder = function (_, placeholder) {
+    if (typeof placeholder === 'string') {
+      placeholder = {
+        id: '',
+        text: placeholder
+      };
+    }
+
+    return placeholder;
+  };
+
+  Placeholder.prototype.update = function (decorated, data) {
+    var singlePlaceholder = (
+      data.length == 1 && data[0].id != this.placeholder.id
+    );
+    var multipleSelections = data.length > 1;
+
+    if (multipleSelections || singlePlaceholder) {
+      return decorated.call(this, data);
+    }
+
+    this.clear();
+
+    var $placeholder = this.selectionContainer();
+
+    $placeholder.html(this.display(this.placeholder));
+    $placeholder.addClass('placeholder').removeClass('choice');
+
+    this.$selection.find('.rendered-selection').append($placeholder);
+  };
+
+  return Placeholder;
+});
+
 define('select2/data/base',[
   '../utils'
 ], function (Utils) {
@@ -840,6 +891,7 @@ define('select2/defaults',[
 
   './selection/single',
   './selection/multiple',
+  './selection/placeholder',
 
   './utils',
 
@@ -849,7 +901,9 @@ define('select2/defaults',[
 
   './dropdown',
   './dropdown/search'
-], function (ResultsList, SingleSelection, MultipleSelection, Utils,
+], function (ResultsList,
+             SingleSelection, MultipleSelection, Placeholder,
+             Utils,
              SelectData, ArrayData, AjaxData,
              Dropdown, Search) {
   function Defaults () {
@@ -885,6 +939,14 @@ define('select2/defaults',[
       } else {
         options.selectionAdapter = SingleSelection;
       }
+
+      // Add the placeholder mixin if a placeholder was specified
+      if (options.placeholder != null) {
+        options.selectionAdapter = Utils.Decorate(
+          options.selectionAdapter,
+          Placeholder
+        );
+      }
     }
 
     return options;
diff --git a/dist/js/select2.amd.js b/dist/js/select2.amd.js
index 9d6409a8..531fecc5 100644
--- a/dist/js/select2.amd.js
+++ b/dist/js/select2.amd.js
@@ -353,6 +353,10 @@ define('select2/selection/single',[
     return data.text;
   };
 
+  SingleSelection.prototype.selectionContainer = function () {
+    return $('<span></span>');
+  };
+
   SingleSelection.prototype.update = function (data) {
     if (data.length === 0) {
       this.clear();
@@ -415,6 +419,10 @@ define('select2/selection/multiple',[
     return data.text;
   };
 
+  MultipleSelection.prototype.selectionContainer = function () {
+    return $('<li class="choice"></li>');
+  };
+
   MultipleSelection.prototype.update = function (data) {
     this.clear();
 
@@ -429,7 +437,7 @@ define('select2/selection/multiple',[
 
       var formatted = this.display(selection);
 
-      var $selection = $('<ul class="choice"></ul>');
+      var $selection = this.selectionContainer();
 
       $selection.text(formatted);
       $selection.data('data', data);
@@ -443,6 +451,49 @@ define('select2/selection/multiple',[
   return MultipleSelection;
 });
 
+define('select2/selection/placeholder',[
+  '../utils'
+], function (Utils) {
+  function Placeholder (decorated, $element, options) {
+    this.placeholder = this.normalizePlaceholder(options.get('placeholder'));
+
+    decorated.call(this, $element, options);
+  }
+
+  Placeholder.prototype.normalizePlaceholder = function (_, placeholder) {
+    if (typeof placeholder === 'string') {
+      placeholder = {
+        id: '',
+        text: placeholder
+      };
+    }
+
+    return placeholder;
+  };
+
+  Placeholder.prototype.update = function (decorated, data) {
+    var singlePlaceholder = (
+      data.length == 1 && data[0].id != this.placeholder.id
+    );
+    var multipleSelections = data.length > 1;
+
+    if (multipleSelections || singlePlaceholder) {
+      return decorated.call(this, data);
+    }
+
+    this.clear();
+
+    var $placeholder = this.selectionContainer();
+
+    $placeholder.html(this.display(this.placeholder));
+    $placeholder.addClass('placeholder').removeClass('choice');
+
+    this.$selection.find('.rendered-selection').append($placeholder);
+  };
+
+  return Placeholder;
+});
+
 define('select2/data/base',[
   '../utils'
 ], function (Utils) {
@@ -840,6 +891,7 @@ define('select2/defaults',[
 
   './selection/single',
   './selection/multiple',
+  './selection/placeholder',
 
   './utils',
 
@@ -849,7 +901,9 @@ define('select2/defaults',[
 
   './dropdown',
   './dropdown/search'
-], function (ResultsList, SingleSelection, MultipleSelection, Utils,
+], function (ResultsList,
+             SingleSelection, MultipleSelection, Placeholder,
+             Utils,
              SelectData, ArrayData, AjaxData,
              Dropdown, Search) {
   function Defaults () {
@@ -885,6 +939,14 @@ define('select2/defaults',[
       } else {
         options.selectionAdapter = SingleSelection;
       }
+
+      // Add the placeholder mixin if a placeholder was specified
+      if (options.placeholder != null) {
+        options.selectionAdapter = Utils.Decorate(
+          options.selectionAdapter,
+          Placeholder
+        );
+      }
     }
 
     return options;
diff --git a/dist/js/select2.full.js b/dist/js/select2.full.js
index b9095614..2899576a 100644
--- a/dist/js/select2.full.js
+++ b/dist/js/select2.full.js
@@ -9891,6 +9891,10 @@ define('select2/selection/single',[
     return data.text;
   };
 
+  SingleSelection.prototype.selectionContainer = function () {
+    return $('<span></span>');
+  };
+
   SingleSelection.prototype.update = function (data) {
     if (data.length === 0) {
       this.clear();
@@ -9953,6 +9957,10 @@ define('select2/selection/multiple',[
     return data.text;
   };
 
+  MultipleSelection.prototype.selectionContainer = function () {
+    return $('<li class="choice"></li>');
+  };
+
   MultipleSelection.prototype.update = function (data) {
     this.clear();
 
@@ -9967,7 +9975,7 @@ define('select2/selection/multiple',[
 
       var formatted = this.display(selection);
 
-      var $selection = $('<ul class="choice"></ul>');
+      var $selection = this.selectionContainer();
 
       $selection.text(formatted);
       $selection.data('data', data);
@@ -9981,6 +9989,49 @@ define('select2/selection/multiple',[
   return MultipleSelection;
 });
 
+define('select2/selection/placeholder',[
+  '../utils'
+], function (Utils) {
+  function Placeholder (decorated, $element, options) {
+    this.placeholder = this.normalizePlaceholder(options.get('placeholder'));
+
+    decorated.call(this, $element, options);
+  }
+
+  Placeholder.prototype.normalizePlaceholder = function (_, placeholder) {
+    if (typeof placeholder === 'string') {
+      placeholder = {
+        id: '',
+        text: placeholder
+      };
+    }
+
+    return placeholder;
+  };
+
+  Placeholder.prototype.update = function (decorated, data) {
+    var singlePlaceholder = (
+      data.length == 1 && data[0].id != this.placeholder.id
+    );
+    var multipleSelections = data.length > 1;
+
+    if (multipleSelections || singlePlaceholder) {
+      return decorated.call(this, data);
+    }
+
+    this.clear();
+
+    var $placeholder = this.selectionContainer();
+
+    $placeholder.html(this.display(this.placeholder));
+    $placeholder.addClass('placeholder').removeClass('choice');
+
+    this.$selection.find('.rendered-selection').append($placeholder);
+  };
+
+  return Placeholder;
+});
+
 define('select2/data/base',[
   '../utils'
 ], function (Utils) {
@@ -10378,6 +10429,7 @@ define('select2/defaults',[
 
   './selection/single',
   './selection/multiple',
+  './selection/placeholder',
 
   './utils',
 
@@ -10387,7 +10439,9 @@ define('select2/defaults',[
 
   './dropdown',
   './dropdown/search'
-], function (ResultsList, SingleSelection, MultipleSelection, Utils,
+], function (ResultsList,
+             SingleSelection, MultipleSelection, Placeholder,
+             Utils,
              SelectData, ArrayData, AjaxData,
              Dropdown, Search) {
   function Defaults () {
@@ -10423,6 +10477,14 @@ define('select2/defaults',[
       } else {
         options.selectionAdapter = SingleSelection;
       }
+
+      // Add the placeholder mixin if a placeholder was specified
+      if (options.placeholder != null) {
+        options.selectionAdapter = Utils.Decorate(
+          options.selectionAdapter,
+          Placeholder
+        );
+      }
     }
 
     return options;
diff --git a/dist/js/select2.full.min.js b/dist/js/select2.full.min.js
index c587868c..870073c7 100644
--- a/dist/js/select2.full.min.js
+++ b/dist/js/select2.full.min.js
@@ -1,4 +1,4 @@
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+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=$('<span class="search"><input type="search" name="search" /></span>');return this.$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:$(this).val()})}),b.on("results:all",function(a){if(null==a.query.term||""===a.query.term){var b=d.showSearch(a);b?d.$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,c){this.$element=a,c=c||{},c.multiple=c.multiple||a.prop("multiple"),this.options=new b(c),d.__super__.constructor.call(this);var e=this.options.get("dataAdapter");this.data=new e(a,this.options);var f=this.render();this.$container=f,f.insertAfter(this.$element),f.width(a.outerWidth(!1));var g=this.options.get("selectionAdapter");this.selection=new g(a,this.options);var h=f.find(".selection"),i=this.selection.render();h.append(i);var j=this.options.get("dropdownAdapter");this.dropdown=new j(a,this.options);var k=f.find(".dropdown-wrapper"),l=this.dropdown.render();k.append(l);var m=this.options.get("resultsAdapter");this.results=new m(a,this.options,this.data);var n=l.find(".results"),o=this.results.render();n.append(o);var p=this;this.data.bind(this,f),this.selection.bind(this,f),this.dropdown.bind(this,f),this.results.bind(this,f),this.$element.on("change",function(){p.data.current(function(a){p.trigger("selection:update",{data:a})})}),this.selection.on("toggle",function(){p.toggleDropdown()}),this.results.on("selected",function(a){p.trigger("select",a),p.trigger("close")}),this.results.on("unselected",function(a){p.trigger("unselect",a),p.trigger("close")}),this.on("open",function(){f.addClass("open")}),this.on("close",function(){f.removeClass("open")}),this.data.current(function(a){p.trigger("selection:update",{data:a})}),this.on("query",function(a){this.data.query(a,function(b){p.trigger("results:all",{data:b,query:a})})}),this.trigger("query",{}),a.hide()};return c.Extend(d,c.Observable),d.prototype.toggleDropdown=function(){this.trigger(this.$container.hasClass("open")?"close":"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 c0ce0057..e32bdcb0 100644
--- a/dist/js/select2.js
+++ b/dist/js/select2.js
@@ -782,6 +782,10 @@ define('select2/selection/single',[
     return data.text;
   };
 
+  SingleSelection.prototype.selectionContainer = function () {
+    return $('<span></span>');
+  };
+
   SingleSelection.prototype.update = function (data) {
     if (data.length === 0) {
       this.clear();
@@ -844,6 +848,10 @@ define('select2/selection/multiple',[
     return data.text;
   };
 
+  MultipleSelection.prototype.selectionContainer = function () {
+    return $('<li class="choice"></li>');
+  };
+
   MultipleSelection.prototype.update = function (data) {
     this.clear();
 
@@ -858,7 +866,7 @@ define('select2/selection/multiple',[
 
       var formatted = this.display(selection);
 
-      var $selection = $('<ul class="choice"></ul>');
+      var $selection = this.selectionContainer();
 
       $selection.text(formatted);
       $selection.data('data', data);
@@ -872,6 +880,49 @@ define('select2/selection/multiple',[
   return MultipleSelection;
 });
 
+define('select2/selection/placeholder',[
+  '../utils'
+], function (Utils) {
+  function Placeholder (decorated, $element, options) {
+    this.placeholder = this.normalizePlaceholder(options.get('placeholder'));
+
+    decorated.call(this, $element, options);
+  }
+
+  Placeholder.prototype.normalizePlaceholder = function (_, placeholder) {
+    if (typeof placeholder === 'string') {
+      placeholder = {
+        id: '',
+        text: placeholder
+      };
+    }
+
+    return placeholder;
+  };
+
+  Placeholder.prototype.update = function (decorated, data) {
+    var singlePlaceholder = (
+      data.length == 1 && data[0].id != this.placeholder.id
+    );
+    var multipleSelections = data.length > 1;
+
+    if (multipleSelections || singlePlaceholder) {
+      return decorated.call(this, data);
+    }
+
+    this.clear();
+
+    var $placeholder = this.selectionContainer();
+
+    $placeholder.html(this.display(this.placeholder));
+    $placeholder.addClass('placeholder').removeClass('choice');
+
+    this.$selection.find('.rendered-selection').append($placeholder);
+  };
+
+  return Placeholder;
+});
+
 define('select2/data/base',[
   '../utils'
 ], function (Utils) {
@@ -1269,6 +1320,7 @@ define('select2/defaults',[
 
   './selection/single',
   './selection/multiple',
+  './selection/placeholder',
 
   './utils',
 
@@ -1278,7 +1330,9 @@ define('select2/defaults',[
 
   './dropdown',
   './dropdown/search'
-], function (ResultsList, SingleSelection, MultipleSelection, Utils,
+], function (ResultsList,
+             SingleSelection, MultipleSelection, Placeholder,
+             Utils,
              SelectData, ArrayData, AjaxData,
              Dropdown, Search) {
   function Defaults () {
@@ -1314,6 +1368,14 @@ define('select2/defaults',[
       } else {
         options.selectionAdapter = SingleSelection;
       }
+
+      // Add the placeholder mixin if a placeholder was specified
+      if (options.placeholder != null) {
+        options.selectionAdapter = Utils.Decorate(
+          options.selectionAdapter,
+          Placeholder
+        );
+      }
     }
 
     return options;
diff --git a/dist/js/select2.min.js b/dist/js/select2.min.js
index 83a0085b..bb3c0d20 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=$('<ul class="options"></ul>');return this.$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=$.map(b,function(a){return 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b=this;a.on("results:all",function(a){b.clear(),b.append(a.data),b.setClasses()}),a.on("results:append",function(a){b.append(a.data),b.setClasses()}),this.$results.on("mouseup",".option.selectable",function(a){var c=$(this),d=c.data("data");return c.hasClass("selected")?(b.trigger("unselected",{originalEvent:a,data:d}),void b.setClasses()):(b.trigger("selected",{originalEvent:a,data:d}),void b.setClasses())}),this.$results.on("mouseenter",".option.highlightable",function(){b.$results.find(".option.highlighted").removeClass("highlighted"),$(this).addClass("highlighted")}),this.$results.on("mouseleave",".option",function(){$(this).removeClass("highlighted")})},b}),define("select2/selection/single",["../utils"],function(a){function b(a,c){this.$element=a,this.options=c,b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<span class="single-select"><span class="rendered-selection"></span></span>');return this.$selection=a,a},b.prototype.bind=function(a){var b=this;this.$selection.on("mousedown",function(a){1===a.which&&b.trigger("toggle",{originalEvent:a})}),a.on("selection:update",function(a){b.update(a.data)})},b.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},b.prototype.display=function(a){return a.text},b.prototype.update=function(a){if(0===a.length)return void this.clear();var b=a[0],c=this.display(b);this.$selection.find(".rendered-selection").html(c)},b}),define("select2/selection/multiple",["../utils"],function(a){function b(a,c){this.$element=a,this.options=c,b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<span class="multiple-select"><ul class="rendered-selection"></ul></span>');return this.$selection=a,a},b.prototype.bind=function(a){var b=this;this.$selection.on("click",function(a){b.trigger("toggle",{originalEvent:a})}),a.on("selection:update",function(a){b.update(a.data)})},b.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},b.prototype.display=function(a){return a.text},b.prototype.update=function(a){if(this.clear(),0!==a.length){for(var b=[],c=0;c<a.length;c++){var d=a[c],e=this.display(d),f=$('<ul class="choice"></ul>');f.text(e),f.data("data",a),b.push(f)}this.$selection.find(".rendered-selection").append(b)}},b}),define("select2/data/base",["../utils"],function(a){function b(){b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.current=function(){throw new Error("The `current` method must be defined in child classes.")},b.prototype.query=function(){throw new Error("The `query` method must be defined in child classes.")},b}),define("select2/data/select",["./base","../utils","jquery"],function(a,b,c){function 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d=[],e=this,f=this.$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}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 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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()}),this.$results.on("mouseup",".option.selectable",function(a){var c=$(this),d=c.data("data");return c.hasClass("selected")?(b.trigger("unselected",{originalEvent:a,data:d}),void b.setClasses()):(b.trigger("selected",{originalEvent:a,data:d}),void b.setClasses())}),this.$results.on("mouseenter",".option.highlightable",function(){b.$results.find(".option.highlighted").removeClass("highlighted"),$(this).addClass("highlighted")}),this.$results.on("mouseleave",".option",function(){$(this).removeClass("highlighted")})},b}),define("select2/selection/single",["../utils"],function(a){function b(a,c){this.$element=a,this.options=c,b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<span class="single-select"><span class="rendered-selection"></span></span>');return 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b=this;this.$selection.on("click",function(a){b.trigger("toggle",{originalEvent:a})}),a.on("selection:update",function(a){b.update(a.data)})},b.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},b.prototype.display=function(a){return a.text},b.prototype.selectionContainer=function(){return $('<li class="choice"></li>')},b.prototype.update=function(a){if(this.clear(),0!==a.length){for(var b=[],c=0;c<a.length;c++){var d=a[c],e=this.display(d),f=this.selectionContainer();f.text(e),f.data("data",a),b.push(f)}this.$selection.find(".rendered-selection").append(b)}},b}),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.$selection.find(".rendered-selection").append(e)},a}),define("select2/data/base",["../utils"],function(a){function b(){b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.current=function(){throw new Error("The `current` method must be defined in child classes.")},b.prototype.query=function(){throw new Error("The `query` method must be defined in child classes.")},b}),define("select2/data/select",["./base","../utils","jquery"],function(a,b,c){function d(a){this.$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 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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 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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,c){this.$element=a,c=c||{},c.multiple=c.multiple||a.prop("multiple"),this.options=new b(c),d.__super__.constructor.call(this);var e=this.options.get("dataAdapter");this.data=new e(a,this.options);var f=this.render();this.$container=f,f.insertAfter(this.$element),f.width(a.outerWidth(!1));var g=this.options.get("selectionAdapter");this.selection=new g(a,this.options);var h=f.find(".selection"),i=this.selection.render();h.append(i);var j=this.options.get("dropdownAdapter");this.dropdown=new j(a,this.options);var k=f.find(".dropdown-wrapper"),l=this.dropdown.render();k.append(l);var m=this.options.get("resultsAdapter");this.results=new m(a,this.options,this.data);var n=l.find(".results"),o=this.results.render();n.append(o);var p=this;this.data.bind(this,f),this.selection.bind(this,f),this.dropdown.bind(this,f),this.results.bind(this,f),this.$element.on("change",function(){p.data.current(function(a){p.trigger("selection:update",{data:a})})}),this.selection.on("toggle",function(){p.toggleDropdown()}),this.results.on("selected",function(a){p.trigger("select",a),p.trigger("close")}),this.results.on("unselected",function(a){p.trigger("unselect",a),p.trigger("close")}),this.on("open",function(){f.addClass("open")}),this.on("close",function(){f.removeClass("open")}),this.data.current(function(a){p.trigger("selection:update",{data:a})}),this.on("query",function(a){this.data.query(a,function(b){p.trigger("results:all",{data:b,query:a})})}),this.trigger("query",{}),a.hide()};return c.Extend(d,c.Observable),d.prototype.toggleDropdown=function(){this.trigger(this.$container.hasClass("open")?"close":"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");
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diff --git a/docs/examples.html b/docs/examples.html
index 4e2ffdad..875c49e2 100644
--- a/docs/examples.html
+++ b/docs/examples.html
@@ -76,7 +76,9 @@ $(".js-example-basic-multiple").select2();
       </p>
 
       <p>
-        <select class="js-example-placeholder-single js-states form-control"></select>
+        <select class="js-example-placeholder-single js-states form-control">
+          <option></option>
+        </select>
       </p>
 
       <p>
@@ -273,7 +275,7 @@ var $states = $(".js-source-states");
 var statesOptions = $states.html();
 $states.remove();
 
-$(".js-states").html(statesOptions);
+$(".js-states").append(statesOptions);
 
 $("[data-fill-from]").each(function () {
   var $this = $(this);
diff --git a/src/js/select2/defaults.js b/src/js/select2/defaults.js
index 164b6064..5b9d7f81 100644
--- a/src/js/select2/defaults.js
+++ b/src/js/select2/defaults.js
@@ -3,6 +3,7 @@ define([
 
   './selection/single',
   './selection/multiple',
+  './selection/placeholder',
 
   './utils',
 
@@ -12,7 +13,9 @@ define([
 
   './dropdown',
   './dropdown/search'
-], function (ResultsList, SingleSelection, MultipleSelection, Utils,
+], function (ResultsList,
+             SingleSelection, MultipleSelection, Placeholder,
+             Utils,
              SelectData, ArrayData, AjaxData,
              Dropdown, Search) {
   function Defaults () {
@@ -48,6 +51,14 @@ define([
       } else {
         options.selectionAdapter = SingleSelection;
       }
+
+      // Add the placeholder mixin if a placeholder was specified
+      if (options.placeholder != null) {
+        options.selectionAdapter = Utils.Decorate(
+          options.selectionAdapter,
+          Placeholder
+        );
+      }
     }
 
     return options;
diff --git a/src/js/select2/selection/multiple.js b/src/js/select2/selection/multiple.js
index f659e05b..3a9f77e2 100644
--- a/src/js/select2/selection/multiple.js
+++ b/src/js/select2/selection/multiple.js
@@ -44,6 +44,10 @@ define([
     return data.text;
   };
 
+  MultipleSelection.prototype.selectionContainer = function () {
+    return $('<li class="choice"></li>');
+  };
+
   MultipleSelection.prototype.update = function (data) {
     this.clear();
 
@@ -58,7 +62,7 @@ define([
 
       var formatted = this.display(selection);
 
-      var $selection = $('<ul class="choice"></ul>');
+      var $selection = this.selectionContainer();
 
       $selection.text(formatted);
       $selection.data('data', data);
diff --git a/src/js/select2/selection/placeholder.js b/src/js/select2/selection/placeholder.js
new file mode 100644
index 00000000..2a207cc4
--- /dev/null
+++ b/src/js/select2/selection/placeholder.js
@@ -0,0 +1,42 @@
+define([
+  '../utils'
+], function (Utils) {
+  function Placeholder (decorated, $element, options) {
+    this.placeholder = this.normalizePlaceholder(options.get('placeholder'));
+
+    decorated.call(this, $element, options);
+  }
+
+  Placeholder.prototype.normalizePlaceholder = function (_, placeholder) {
+    if (typeof placeholder === 'string') {
+      placeholder = {
+        id: '',
+        text: placeholder
+      };
+    }
+
+    return placeholder;
+  };
+
+  Placeholder.prototype.update = function (decorated, data) {
+    var singlePlaceholder = (
+      data.length == 1 && data[0].id != this.placeholder.id
+    );
+    var multipleSelections = data.length > 1;
+
+    if (multipleSelections || singlePlaceholder) {
+      return decorated.call(this, data);
+    }
+
+    this.clear();
+
+    var $placeholder = this.selectionContainer();
+
+    $placeholder.html(this.display(this.placeholder));
+    $placeholder.addClass('placeholder').removeClass('choice');
+
+    this.$selection.find('.rendered-selection').append($placeholder);
+  };
+
+  return Placeholder;
+});
diff --git a/src/js/select2/selection/single.js b/src/js/select2/selection/single.js
index 082dc424..82e4a9df 100644
--- a/src/js/select2/selection/single.js
+++ b/src/js/select2/selection/single.js
@@ -49,6 +49,10 @@ define([
     return data.text;
   };
 
+  SingleSelection.prototype.selectionContainer = function () {
+    return $('<span></span>');
+  };
+
   SingleSelection.prototype.update = function (data) {
     if (data.length === 0) {
       this.clear();
diff --git a/src/scss/theme/default/layout.scss b/src/scss/theme/default/layout.scss
index 2d1a0408..b9f03abc 100644
--- a/src/scss/theme/default/layout.scss
+++ b/src/scss/theme/default/layout.scss
@@ -1,13 +1,17 @@
 .select2-container.select2-theme-default {
   .selection {
     .single-select {
-      background-color: #eee;
+      background-color: #fff;
       border: 1px solid #aaa;
       border-radius: 4px;
 
       .rendered-selection {
         color: #444;
         line-height: 28px;
+
+        .placeholder {
+          color: #999;
+        }
       }
     }
 
@@ -22,6 +26,12 @@
         padding: 5px;
         padding-bottom: 0;
 
+        .placeholder {
+          color: #999;
+
+          float: left;
+        }
+
         .choice {
           background-color: #e4e4e4;