admin-lte-css-js/vendor/js/admin/select2.full.js

The default blueprint for ember-cli addons.

/*!
 * Select2 4.0.3
 * https://select2.github.io
 *
 * Released under the MIT license
 * https://github.com/select2/select2/blob/master/LICENSE.md
 */
(function (factory) {
  if (typeof define === 'function' && define.amd) {
    // AMD. Register as an anonymous module.
    define(['jquery'], factory);
  } else if (typeof exports === 'object') {
    // Node/CommonJS
    factory(require('jquery'));
  } else {
    // Browser globals
    factory(jQuery);
  }
}(function (jQuery) {
  // This is needed so we can catch the AMD loader configuration and use it
  // The inner file should be wrapped (by `banner.start.js`) in a function that
  // returns the AMD loader references.
  var S2 =
(function () {
  // Restore the Select2 AMD loader so it can be used
  // Needed mostly in the language files, where the loader is not inserted
  if (jQuery && jQuery.fn && jQuery.fn.select2 && jQuery.fn.select2.amd) {
    var S2 = jQuery.fn.select2.amd;
  }
var S2;(function () { if (!S2 || !S2.requirejs) {
if (!S2) { S2 = {}; } else { require = S2; }
/**
 * @license almond 0.3.1 Copyright (c) 2011-2014, The Dojo Foundation All Rights Reserved.
 * Available via the MIT or new BSD license.
 * see: http://github.com/jrburke/almond for details
 */
//Going sloppy to avoid 'use strict' string cost, but strict practices should
//be followed.
/*jslint sloppy: true */
/*global setTimeout: false */

var requirejs, require, define;
(function (undef) {
    var main, req, makeMap, handlers,
        defined = {},
        waiting = {},
        config = {},
        defining = {},
        hasOwn = Object.prototype.hasOwnProperty,
        aps = [].slice,
        jsSuffixRegExp = /\.js$/;

    function hasProp(obj, prop) {
        return hasOwn.call(obj, prop);
    }

    /**
     * Given a relative module name, like ./something, normalize it to
     * a real name that can be mapped to a path.
     * @param {String} name the relative name
     * @param {String} baseName a real name that the name arg is relative
     * to.
     * @returns {String} normalized name
     */
    function normalize(name, baseName) {
        var nameParts, nameSegment, mapValue, foundMap, lastIndex,
            foundI, foundStarMap, starI, i, j, part,
            baseParts = baseName && baseName.split("/"),
            map = config.map,
            starMap = (map && map['*']) || {};

        //Adjust any relative paths.
        if (name && name.charAt(0) === ".") {
            //If have a base name, try to normalize against it,
            //otherwise, assume it is a top-level require that will
            //be relative to baseUrl in the end.
            if (baseName) {
                name = name.split('/');
                lastIndex = name.length - 1;

                // Node .js allowance:
                if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) {
                    name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, '');
                }

                //Lop off the last part of baseParts, so that . matches the
                //"directory" and not name of the baseName's module. For instance,
                //baseName of "one/two/three", maps to "one/two/three.js", but we
                //want the directory, "one/two" for this normalization.
                name = baseParts.slice(0, baseParts.length - 1).concat(name);

                //start trimDots
                for (i = 0; i < name.length; i += 1) {
                    part = name[i];
                    if (part === ".") {
                        name.splice(i, 1);
                        i -= 1;
                    } else if (part === "..") {
                        if (i === 1 && (name[2] === '..' || name[0] === '..')) {
                            //End of the line. Keep at least one non-dot
                            //path segment at the front so it can be mapped
                            //correctly to disk. Otherwise, there is likely
                            //no path mapping for a path starting with '..'.
                            //This can still fail, but catches the most reasonable
                            //uses of ..
                            break;
                        } else if (i > 0) {
                            name.splice(i - 1, 2);
                            i -= 2;
                        }
                    }
                }
                //end trimDots

                name = name.join("/");
            } else if (name.indexOf('./') === 0) {
                // No baseName, so this is ID is resolved relative
                // to baseUrl, pull off the leading dot.
                name = name.substring(2);
            }
        }

        //Apply map config if available.
        if ((baseParts || starMap) && map) {
            nameParts = name.split('/');

            for (i = nameParts.length; i > 0; i -= 1) {
                nameSegment = nameParts.slice(0, i).join("/");

                if (baseParts) {
                    //Find the longest baseName segment match in the config.
                    //So, do joins on the biggest to smallest lengths of baseParts.
                    for (j = baseParts.length; j > 0; j -= 1) {
                        mapValue = map[baseParts.slice(0, j).join('/')];

                        //baseName segment has  config, find if it has one for
                        //this name.
                        if (mapValue) {
                            mapValue = mapValue[nameSegment];
                            if (mapValue) {
                                //Match, update name to the new value.
                                foundMap = mapValue;
                                foundI = i;
                                break;
                            }
                        }
                    }
                }

                if (foundMap) {
                    break;
                }

                //Check for a star map match, but just hold on to it,
                //if there is a shorter segment match later in a matching
                //config, then favor over this star map.
                if (!foundStarMap && starMap && starMap[nameSegment]) {
                    foundStarMap = starMap[nameSegment];
                    starI = i;
                }
            }

            if (!foundMap && foundStarMap) {
                foundMap = foundStarMap;
                foundI = starI;
            }

            if (foundMap) {
                nameParts.splice(0, foundI, foundMap);
                name = nameParts.join('/');
            }
        }

        return name;
    }

    function makeRequire(relName, forceSync) {
        return function () {
            //A version of a require function that passes a moduleName
            //value for items that may need to
            //look up paths relative to the moduleName
            var args = aps.call(arguments, 0);

            //If first arg is not require('string'), and there is only
            //one arg, it is the array form without a callback. Insert
            //a null so that the following concat is correct.
            if (typeof args[0] !== 'string' && args.length === 1) {
                args.push(null);
            }
            return req.apply(undef, args.concat([relName, forceSync]));
        };
    }

    function makeNormalize(relName) {
        return function (name) {
            return normalize(name, relName);
        };
    }

    function makeLoad(depName) {
        return function (value) {
            defined[depName] = value;
        };
    }

    function callDep(name) {
        if (hasProp(waiting, name)) {
            var args = waiting[name];
            delete waiting[name];
            defining[name] = true;
            main.apply(undef, args);
        }

        if (!hasProp(defined, name) && !hasProp(defining, name)) {
            throw new Error('No ' + name);
        }
        return defined[name];
    }

    //Turns a plugin!resource to [plugin, resource]
    //with the plugin being undefined if the name
    //did not have a plugin prefix.
    function splitPrefix(name) {
        var prefix,
            index = name ? name.indexOf('!') : -1;
        if (index > -1) {
            prefix = name.substring(0, index);
            name = name.substring(index + 1, name.length);
        }
        return [prefix, name];
    }

    /**
     * Makes a name map, normalizing the name, and using a plugin
     * for normalization if necessary. Grabs a ref to plugin
     * too, as an optimization.
     */
    makeMap = function (name, relName) {
        var plugin,
            parts = splitPrefix(name),
            prefix = parts[0];

        name = parts[1];

        if (prefix) {
            prefix = normalize(prefix, relName);
            plugin = callDep(prefix);
        }

        //Normalize according
        if (prefix) {
            if (plugin && plugin.normalize) {
                name = plugin.normalize(name, makeNormalize(relName));
            } else {
                name = normalize(name, relName);
            }
        } else {
            name = normalize(name, relName);
            parts = splitPrefix(name);
            prefix = parts[0];
            name = parts[1];
            if (prefix) {
                plugin = callDep(prefix);
            }
        }

        //Using ridiculous property names for space reasons
        return {
            f: prefix ? prefix + '!' + name : name, //fullName
            n: name,
            pr: prefix,
            p: plugin
        };
    };

    function makeConfig(name) {
        return function () {
            return (config && config.config && config.config[name]) || {};
        };
    }

    handlers = {
        require: function (name) {
            return makeRequire(name);
        },
        exports: function (name) {
            var e = defined[name];
            if (typeof e !== 'undefined') {
                return e;
            } else {
                return (defined[name] = {});
            }
        },
        module: function (name) {
            return {
                id: name,
                uri: '',
                exports: defined[name],
                config: makeConfig(name)
            };
        }
    };

    main = function (name, deps, callback, relName) {
        var cjsModule, depName, ret, map, i,
            args = [],
            callbackType = typeof callback,
            usingExports;

        //Use name if no relName
        relName = relName || name;

        //Call the callback to define the module, if necessary.
        if (callbackType === 'undefined' || callbackType === 'function') {
            //Pull out the defined dependencies and pass the ordered
            //values to the callback.
            //Default to [require, exports, module] if no deps
            deps = !deps.length && callback.length ? ['require', 'exports', 'module'] : deps;
            for (i = 0; i < deps.length; i += 1) {
                map = makeMap(deps[i], relName);
                depName = map.f;

                //Fast path CommonJS standard dependencies.
                if (depName === "require") {
                    args[i] = handlers.require(name);
                } else if (depName === "exports") {
                    //CommonJS module spec 1.1
                    args[i] = handlers.exports(name);
                    usingExports = true;
                } else if (depName === "module") {
                    //CommonJS module spec 1.1
                    cjsModule = args[i] = handlers.module(name);
                } else if (hasProp(defined, depName) ||
                           hasProp(waiting, depName) ||
                           hasProp(defining, depName)) {
                    args[i] = callDep(depName);
                } else if (map.p) {
                    map.p.load(map.n, makeRequire(relName, true), makeLoad(depName), {});
                    args[i] = defined[depName];
                } else {
                    throw new Error(name + ' missing ' + depName);
                }
            }

            ret = callback ? callback.apply(defined[name], args) : undefined;

            if (name) {
                //If setting exports via "module" is in play,
                //favor that over return value and exports. After that,
                //favor a non-undefined return value over exports use.
                if (cjsModule && cjsModule.exports !== undef &&
                        cjsModule.exports !== defined[name]) {
                    defined[name] = cjsModule.exports;
                } else if (ret !== undef || !usingExports) {
                    //Use the return value from the function.
                    defined[name] = ret;
                }
            }
        } else if (name) {
            //May just be an object definition for the module. Only
            //worry about defining if have a module name.
            defined[name] = callback;
        }
    };

    requirejs = require = req = function (deps, callback, relName, forceSync, alt) {
        if (typeof deps === "string") {
            if (handlers[deps]) {
                //callback in this case is really relName
                return handlers[deps](callback);
            }
            //Just return the module wanted. In this scenario, the
            //deps arg is the module name, and second arg (if passed)
            //is just the relName.
            //Normalize module name, if it contains . or ..
            return callDep(makeMap(deps, callback).f);
        } else if (!deps.splice) {
            //deps is a config object, not an array.
            config = deps;
            if (config.deps) {
                req(config.deps, config.callback);
            }
            if (!callback) {
                return;
            }

            if (callback.splice) {
                //callback is an array, which means it is a dependency list.
                //Adjust args if there are dependencies
                deps = callback;
                callback = relName;
                relName = null;
            } else {
                deps = undef;
            }
        }

        //Support require(['a'])
        callback = callback || function () {};

        //If relName is a function, it is an errback handler,
        //so remove it.
        if (typeof relName === 'function') {
            relName = forceSync;
            forceSync = alt;
        }

        //Simulate async callback;
        if (forceSync) {
            main(undef, deps, callback, relName);
        } else {
            //Using a non-zero value because of concern for what old browsers
            //do, and latest browsers "upgrade" to 4 if lower value is used:
            //http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#dom-windowtimers-settimeout:
            //If want a value immediately, use require('id') instead -- something
            //that works in almond on the global level, but not guaranteed and
            //unlikely to work in other AMD implementations.
            setTimeout(function () {
                main(undef, deps, callback, relName);
            }, 4);
        }

        return req;
    };

    /**
     * Just drops the config on the floor, but returns req in case
     * the config return value is used.
     */
    req.config = function (cfg) {
        return req(cfg);
    };

    /**
     * Expose module registry for debugging and tooling
     */
    requirejs._defined = defined;

    define = function (name, deps, callback) {
        if (typeof name !== 'string') {
            throw new Error('See almond README: incorrect module build, no module name');
        }

        //This module may not have dependencies
        if (!deps.splice) {
            //deps is not an array, so probably means
            //an object literal or factory function for
            //the value. Adjust args.
            callback = deps;
            deps = [];
        }

        if (!hasProp(defined, name) && !hasProp(waiting, name)) {
            waiting[name] = [name, deps, callback];
        }
    };

    define.amd = {
        jQuery: true
    };
}());

S2.requirejs = requirejs;S2.require = require;S2.define = define;
}
}());
S2.define("almond", function(){});

/* global jQuery:false, $:false */
S2.define('jquery',[],function () {
  var _$ = jQuery || $;

  if (_$ == null && console && console.error) {
    console.error(
      'Select2: An instance of jQuery or a jQuery-compatible library was not ' +
      'found. Make sure that you are including jQuery before Select2 on your ' +
      'web page.'
    );
  }

  return _$;
});

S2.define('select2/utils',[
  'jquery'
], function ($) {
  var Utils = {};

  Utils.Extend = function (ChildClass, SuperClass) {
    var __hasProp = {}.hasOwnProperty;

    function BaseConstructor () {
      this.constructor = ChildClass;
    }

    for (var key in SuperClass) {
      if (__hasProp.call(SuperClass, key)) {
        ChildClass[key] = SuperClass[key];
      }
    }

    BaseConstructor.prototype = SuperClass.prototype;
    ChildClass.prototype = new BaseConstructor();
    ChildClass.__super__ = SuperClass.prototype;

    return ChildClass;
  };

  function getMethods (theClass) {
    var proto = theClass.prototype;

    var methods = [];

    for (var methodName in proto) {
      var m = proto[methodName];

      if (typeof m !== 'function') {
        continue;
      }

      if (methodName === 'constructor') {
        continue;
      }

      methods.push(methodName);
    }

    return methods;
  }

  Utils.Decorate = function (SuperClass, DecoratorClass) {
    var decoratedMethods = getMethods(DecoratorClass);
    var superMethods = getMethods(SuperClass);

    function DecoratedClass () {
      var unshift = Array.prototype.unshift;

      var argCount = DecoratorClass.prototype.constructor.length;

      var calledConstructor = SuperClass.prototype.constructor;

      if (argCount > 0) {
        unshift.call(arguments, SuperClass.prototype.constructor);

        calledConstructor = DecoratorClass.prototype.constructor;
      }

      calledConstructor.apply(this, arguments);
    }

    DecoratorClass.displayName = SuperClass.displayName;

    function ctr () {
      this.constructor = DecoratedClass;
    }

    DecoratedClass.prototype = new ctr();

    for (var m = 0; m < superMethods.length; m++) {
        var superMethod = superMethods[m];

        DecoratedClass.prototype[superMethod] =
          SuperClass.prototype[superMethod];
    }

    var calledMethod = function (methodName) {
      // Stub out the original method if it's not decorating an actual method
      var originalMethod = function () {};

      if (methodName in DecoratedClass.prototype) {
        originalMethod = DecoratedClass.prototype[methodName];
      }

      var decoratedMethod = DecoratorClass.prototype[methodName];

      return function () {
        var unshift = Array.prototype.unshift;

        unshift.call(arguments, originalMethod);

        return decoratedMethod.apply(this, arguments);
      };
    };

    for (var d = 0; d < decoratedMethods.length; d++) {
      var decoratedMethod = decoratedMethods[d];

      DecoratedClass.prototype[decoratedMethod] = calledMethod(decoratedMethod);
    }

    return DecoratedClass;
  };

  var Observable = function () {
    this.listeners = {};
  };

  Observable.prototype.on = function (event, callback) {
    this.listeners = this.listeners || {};

    if (event in this.listeners) {
      this.listeners[event].push(callback);
    } else {
      this.listeners[event] = [callback];
    }
  };

  Observable.prototype.trigger = function (event) {
    var slice = Array.prototype.slice;
    var params = slice.call(arguments, 1);

    this.listeners = this.listeners || {};

    // Params should always come in as an array
    if (params == null) {
      params = [];
    }

    // If there are no arguments to the event, use a temporary object
    if (params.length === 0) {
      params.push({});
    }

    // Set the `_type` of the first object to the event
    params[0]._type = event;

    if (event in this.listeners) {
      this.invoke(this.listeners[event], slice.call(arguments, 1));
    }

    if ('*' in this.listeners) {
      this.invoke(this.listeners['*'], arguments);
    }
  };

  Observable.prototype.invoke = function (listeners, params) {
    for (var i = 0, len = listeners.length; i < len; i++) {
      listeners[i].apply(this, params);
    }
  };

  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;
  };

  Utils.bind = function (func, context) {
    return function () {
      func.apply(context, arguments);
    };
  };

  Utils._convertData = function (data) {
    for (var originalKey in data) {
      var keys = originalKey.split('-');

      var dataLevel = data;

      if (keys.length === 1) {
        continue;
      }

      for (var k = 0; k < keys.length; k++) {
        var key = keys[k];

        // Lowercase the first letter
        // By default, dash-separated becomes camelCase
        key = key.substring(0, 1).toLowerCase() + key.substring(1);

        if (!(key in dataLevel)) {
          dataLevel[key] = {};
        }

        if (k == keys.length - 1) {
          dataLevel[key] = data[originalKey];
        }

        dataLevel = dataLevel[key];
      }

      delete data[originalKey];
    }

    return data;
  };

  Utils.hasScroll = function (index, el) {
    // Adapted from the function created by @ShadowScripter
    // and adapted by @BillBarry on the Stack Exchange Code Review website.
    // The original code can be found at
    // http://codereview.stackexchange.com/q/13338
    // and was designed to be used with the Sizzle selector engine.

    var $el = $(el);
    var overflowX = el.style.overflowX;
    var overflowY = el.style.overflowY;

    //Check both x and y declarations
    if (overflowX === overflowY &&
        (overflowY === 'hidden' || overflowY === 'visible')) {
      return false;
    }

    if (overflowX === 'scroll' || overflowY === 'scroll') {
      return true;
    }

    return ($el.innerHeight() < el.scrollHeight ||
      $el.innerWidth() < el.scrollWidth);
  };

  Utils.escapeMarkup = function (markup) {
    var replaceMap = {
      '\\': '&#92;',
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      '\'': '&#39;',
      '/': '&#47;'
    };

    // Do not try to escape the markup if it's not a string
    if (typeof markup !== 'string') {
      return markup;
    }

    return String(markup).replace(/[&<>"'\/\\]/g, function (match) {
      return replaceMap[match];
    });
  };

  // Append an array of jQuery nodes to a given element.
  Utils.appendMany = function ($element, $nodes) {
    // jQuery 1.7.x does not support $.fn.append() with an array
    // Fall back to a jQuery object collection using $.fn.add()
    if ($.fn.jquery.substr(0, 3) === '1.7') {
      var $jqNodes = $();

      $.map($nodes, function (node) {
        $jqNodes = $jqNodes.add(node);
      });

      $nodes = $jqNodes;
    }

    $element.append($nodes);
  };

  return Utils;
});

S2.define('select2/results',[
  'jquery',
  './utils'
], function ($, Utils) {
  function Results ($element, options, dataAdapter) {
    this.$element = $element;
    this.data = dataAdapter;
    this.options = options;

    Results.__super__.constructor.call(this);
  }

  Utils.Extend(Results, Utils.Observable);

  Results.prototype.render = function () {
    var $results = $(
      '<ul class="select2-results__options" role="tree"></ul>'
    );

    if (this.options.get('multiple')) {
      $results.attr('aria-multiselectable', 'true');
    }

    this.$results = $results;

    return $results;
  };

  Results.prototype.clear = function () {
    this.$results.empty();
  };

  Results.prototype.displayMessage = function (params) {
    var escapeMarkup = this.options.get('escapeMarkup');

    this.clear();
    this.hideLoading();

    var $message = $(
      '<li role="treeitem" aria-live="assertive"' +
      ' class="select2-results__option"></li>'
    );

    var message = this.options.get('translations').get(params.message);

    $message.append(
      escapeMarkup(
        message(params.args)
      )
    );

    $message[0].className += ' select2-results__message';

    this.$results.append($message);
  };

  Results.prototype.hideMessages = function () {
    this.$results.find('.select2-results__message').remove();
  };

  Results.prototype.append = function (data) {
    this.hideLoading();

    var $options = [];

    if (data.results == null || data.results.length === 0) {
      if (this.$results.children().length === 0) {
        this.trigger('results:message', {
          message: 'noResults'
        });
      }

      return;
    }

    data.results = this.sort(data.results);

    for (var d = 0; d < data.results.length; d++) {
      var item = data.results[d];

      var $option = this.option(item);

      $options.push($option);
    }

    this.$results.append($options);
  };

  Results.prototype.position = function ($results, $dropdown) {
    var $resultsContainer = $dropdown.find('.select2-results');
    $resultsContainer.append($results);
  };

  Results.prototype.sort = function (data) {
    var sorter = this.options.get('sorter');

    return sorter(data);
  };

  Results.prototype.highlightFirstItem = function () {
    var $options = this.$results
      .find('.select2-results__option[aria-selected]');

    var $selected = $options.filter('[aria-selected=true]');

    // Check if there are any selected options
    if ($selected.length > 0) {
      // If there are selected options, highlight the first
      $selected.first().trigger('mouseenter');
    } else {
      // If there are no selected options, highlight the first option
      // in the dropdown
      $options.first().trigger('mouseenter');
    }

    this.ensureHighlightVisible();
  };

  Results.prototype.setClasses = function () {
    var self = this;

    this.data.current(function (selected) {
      var selectedIds = $.map(selected, function (s) {
        return s.id.toString();
      });

      var $options = self.$results
        .find('.select2-results__option[aria-selected]');

      $options.each(function () {
        var $option = $(this);

        var item = $.data(this, 'data');

        // id needs to be converted to a string when comparing
        var id = '' + item.id;

        if ((item.element != null && item.element.selected) ||
            (item.element == null && $.inArray(id, selectedIds) > -1)) {
          $option.attr('aria-selected', 'true');
        } else {
          $option.attr('aria-selected', 'false');
        }
      });

    });
  };

  Results.prototype.showLoading = function (params) {
    this.hideLoading();

    var loadingMore = this.options.get('translations').get('searching');

    var loading = {
      disabled: true,
      loading: true,
      text: loadingMore(params)
    };
    var $loading = this.option(loading);
    $loading.className += ' loading-results';

    this.$results.prepend($loading);
  };

  Results.prototype.hideLoading = function () {
    this.$results.find('.loading-results').remove();
  };

  Results.prototype.option = function (data) {
    var option = document.createElement('li');
    option.className = 'select2-results__option';

    var attrs = {
      'role': 'treeitem',
      'aria-selected': 'false'
    };

    if (data.disabled) {
      delete attrs['aria-selected'];
      attrs['aria-disabled'] = 'true';
    }

    if (data.id == null) {
      delete attrs['aria-selected'];
    }

    if (data._resultId != null) {
      option.id = data._resultId;
    }

    if (data.title) {
      option.title = data.title;
    }

    if (data.children) {
      attrs.role = 'group';
      attrs['aria-label'] = data.text;
      delete attrs['aria-selected'];
    }

    for (var attr in attrs) {
      var val = attrs[attr];

      option.setAttribute(attr, val);
    }

    if (data.children) {
      var $option = $(option);

      var label = document.createElement('strong');
      label.className = 'select2-results__group';

      var $label = $(label);
      this.template(data, label);

      var $children = [];

      for (var c = 0; c < data.children.length; c++) {
        var child = data.children[c];

        var $child = this.option(child);

        $children.push($child);
      }

      var $childrenContainer = $('<ul></ul>', {
        'class': 'select2-results__options select2-results__options--nested'
      });

      $childrenContainer.append($children);

      $option.append(label);
      $option.append($childrenContainer);
    } else {
      this.template(data, option);
    }

    $.data(option, 'data', data);

    return option;
  };

  Results.prototype.bind = function (container, $container) {
    var self = this;

    var id = container.id + '-results';

    this.$results.attr('id', id);

    container.on('results:all', function (params) {
      self.clear();
      self.append(params.data);

      if (container.isOpen()) {
        self.setClasses();
        self.highlightFirstItem();
      }
    });

    container.on('results:append', function (params) {
      self.append(params.data);

      if (container.isOpen()) {
        self.setClasses();
      }
    });

    container.on('query', function (params) {
      self.hideMessages();
      self.showLoading(params);
    });

    container.on('select', function () {
      if (!container.isOpen()) {
        return;
      }

      self.setClasses();
      self.highlightFirstItem();
    });

    container.on('unselect', function () {
      if (!container.isOpen()) {
        return;
      }

      self.setClasses();
      self.highlightFirstItem();
    });

    container.on('open', function () {
      // When the dropdown is open, aria-expended="true"
      self.$results.attr('aria-expanded', 'true');
      self.$results.attr('aria-hidden', 'false');

      self.setClasses();
      self.ensureHighlightVisible();
    });

    container.on('close', function () {
      // When the dropdown is closed, aria-expended="false"
      self.$results.attr('aria-expanded', 'false');
      self.$results.attr('aria-hidden', 'true');
      self.$results.removeAttr('aria-activedescendant');
    });

    container.on('results:toggle', function () {
      var $highlighted = self.getHighlightedResults();

      if ($highlighted.length === 0) {
        return;
      }

      $highlighted.trigger('mouseup');
    });

    container.on('results:select', function () {
      var $highlighted = self.getHighlightedResults();

      if ($highlighted.length === 0) {
        return;
      }

      var data = $highlighted.data('data');

      if ($highlighted.attr('aria-selected') == 'true') {
        self.trigger('close', {});
      } else {
        self.trigger('select', {
          data: data
        });
      }
    });

    container.on('results:previous', function () {
      var $highlighted = self.getHighlightedResults();

      var $options = self.$results.find('[aria-selected]');

      var currentIndex = $options.index($highlighted);

      // If we are already at te top, don't move further
      if (currentIndex === 0) {
        return;
      }

      var nextIndex = currentIndex - 1;

      // If none are highlighted, highlight the first
      if ($highlighted.length === 0) {
        nextIndex = 0;
      }

      var $next = $options.eq(nextIndex);

      $next.trigger('mouseenter');

      var currentOffset = self.$results.offset().top;
      var nextTop = $next.offset().top;
      var nextOffset = self.$results.scrollTop() + (nextTop - currentOffset);

      if (nextIndex === 0) {
        self.$results.scrollTop(0);
      } else if (nextTop - currentOffset < 0) {
        self.$results.scrollTop(nextOffset);
      }
    });

    container.on('results:next', function () {
      var $highlighted = self.getHighlightedResults();

      var $options = self.$results.find('[aria-selected]');

      var currentIndex = $options.index($highlighted);

      var nextIndex = currentIndex + 1;

      // If we are at the last option, stay there
      if (nextIndex >= $options.length) {
        return;
      }

      var $next = $options.eq(nextIndex);

      $next.trigger('mouseenter');

      var currentOffset = self.$results.offset().top +
        self.$results.outerHeight(false);
      var nextBottom = $next.offset().top + $next.outerHeight(false);
      var nextOffset = self.$results.scrollTop() + nextBottom - currentOffset;

      if (nextIndex === 0) {
        self.$results.scrollTop(0);
      } else if (nextBottom > currentOffset) {
        self.$results.scrollTop(nextOffset);
      }
    });

    container.on('results:focus', function (params) {
      params.element.addClass('select2-results__option--highlighted');
    });

    container.on('results:message', function (params) {
      self.displayMessage(params);
    });

    if ($.fn.mousewheel) {
      this.$results.on('mousewheel', function (e) {
        var top = self.$results.scrollTop();

        var bottom = self.$results.get(0).scrollHeight - top + e.deltaY;

        var isAtTop = e.deltaY > 0 && top - e.deltaY <= 0;
        var isAtBottom = e.deltaY < 0 && bottom <= self.$results.height();

        if (isAtTop) {
          self.$results.scrollTop(0);

          e.preventDefault();
          e.stopPropagation();
        } else if (isAtBottom) {
          self.$results.scrollTop(
            self.$results.get(0).scrollHeight - self.$results.height()
          );

          e.preventDefault();
          e.stopPropagation();
        }
      });
    }

    this.$results.on('mouseup', '.select2-results__option[aria-selected]',
      function (evt) {
      var $this = $(this);

      var data = $this.data('data');

      if ($this.attr('aria-selected') === 'true') {
        if (self.options.get('multiple')) {
          self.trigger('unselect', {
            originalEvent: evt,
            data: data
          });
        } else {
          self.trigger('close', {});
        }

        return;
      }

      self.trigger('select', {
        originalEvent: evt,
        data: data
      });
    });

    this.$results.on('mouseenter', '.select2-results__option[aria-selected]',
      function (evt) {
      var data = $(this).data('data');

      self.getHighlightedResults()
          .removeClass('select2-results__option--highlighted');

      self.trigger('results:focus', {
        data: data,
        element: $(this)
      });
    });
  };

  Results.prototype.getHighlightedResults = function () {
    var $highlighted = this.$results
    .find('.select2-results__option--highlighted');

    return $highlighted;
  };

  Results.prototype.destroy = function () {
    this.$results.remove();
  };

  Results.prototype.ensureHighlightVisible = function () {
    var $highlighted = this.getHighlightedResults();

    if ($highlighted.length === 0) {
      return;
    }

    var $options = this.$results.find('[aria-selected]');

    var currentIndex = $options.index($highlighted);

    var currentOffset = this.$results.offset().top;
    var nextTop = $highlighted.offset().top;
    var nextOffset = this.$results.scrollTop() + (nextTop - currentOffset);

    var offsetDelta = nextTop - currentOffset;
    nextOffset -= $highlighted.outerHeight(false) * 2;

    if (currentIndex <= 2) {
      this.$results.scrollTop(0);
    } else if (offsetDelta > this.$results.outerHeight() || offsetDelta < 0) {
      this.$results.scrollTop(nextOffset);
    }
  };

  Results.prototype.template = function (result, container) {
    var template = this.options.get('templateResult');
    var escapeMarkup = this.options.get('escapeMarkup');

    var content = template(result, container);

    if (content == null) {
      container.style.display = 'none';
    } else if (typeof content === 'string') {
      container.innerHTML = escapeMarkup(content);
    } else {
      $(container).append(content);
    }
  };

  return Results;
});

S2.define('select2/keys',[

], function () {
  var KEYS = {
    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
  };

  return KEYS;
});

S2.define('select2/selection/base',[
  'jquery',
  '../utils',
  '../keys'
], function ($, Utils, KEYS) {
  function BaseSelection ($element, options) {
    this.$element = $element;
    this.options = options;

    BaseSelection.__super__.constructor.call(this);
  }

  Utils.Extend(BaseSelection, Utils.Observable);

  BaseSelection.prototype.render = function () {
    var $selection = $(
      '<span class="select2-selection" role="combobox" ' +
      ' aria-haspopup="true" aria-expanded="false">' +
      '</span>'
    );

    this._tabindex = 0;

    if (this.$element.data('old-tabindex') != null) {
      this._tabindex = this.$element.data('old-tabindex');
    } else if (this.$element.attr('tabindex') != null) {
      this._tabindex = this.$element.attr('tabindex');
    }

    $selection.attr('title', this.$element.attr('title'));
    $selection.attr('tabindex', this._tabindex);

    this.$selection = $selection;

    return $selection;
  };

  BaseSelection.prototype.bind = function (container, $container) {
    var self = this;

    var id = container.id + '-container';
    var resultsId = container.id + '-results';

    this.container = container;

    this.$selection.on('focus', function (evt) {
      self.trigger('focus', evt);
    });

    this.$selection.on('blur', function (evt) {
      self._handleBlur(evt);
    });

    this.$selection.on('keydown', function (evt) {
      self.trigger('keypress', evt);

      if (evt.which === KEYS.SPACE) {
        evt.preventDefault();
      }
    });

    container.on('results:focus', function (params) {
      self.$selection.attr('aria-activedescendant', params.data._resultId);
    });

    container.on('selection:update', function (params) {
      self.update(params.data);
    });

    container.on('open', function () {
      // When the dropdown is open, aria-expanded="true"
      self.$selection.attr('aria-expanded', 'true');
      self.$selection.attr('aria-owns', resultsId);

      self._attachCloseHandler(container);
    });

    container.on('close', function () {
      // When the dropdown is closed, aria-expanded="false"
      self.$selection.attr('aria-expanded', 'false');
      self.$selection.removeAttr('aria-activedescendant');
      self.$selection.removeAttr('aria-owns');

      self.$selection.focus();

      self._detachCloseHandler(container);
    });

    container.on('enable', function () {
      self.$selection.attr('tabindex', self._tabindex);
    });

    container.on('disable', function () {
      self.$selection.attr('tabindex', '-1');
    });
  };

  BaseSelection.prototype._handleBlur = function (evt) {
    var self = this;

    // This needs to be delayed as the active element is the body when the tab
    // key is pressed, possibly along with others.
    window.setTimeout(function () {
      // Don't trigger `blur` if the focus is still in the selection
      if (
        (document.activeElement == self.$selection[0]) ||
        ($.contains(self.$selection[0], document.activeElement))
      ) {
        return;
      }

      self.trigger('blur', evt);
    }, 1);
  };

  BaseSelection.prototype._attachCloseHandler = function (container) {
    var self = this;

    $(document.body).on('mousedown.select2.' + container.id, function (e) {
      var $target = $(e.target);

      var $select = $target.closest('.select2');

      var $all = $('.select2.select2-container--open');

      $all.each(function () {
        var $this = $(this);

        if (this == $select[0]) {
          return;
        }

        var $element = $this.data('element');

        $element.select2('close');
      });
    });
  };

  BaseSelection.prototype._detachCloseHandler = function (container) {
    $(document.body).off('mousedown.select2.' + container.id);
  };

  BaseSelection.prototype.position = function ($selection, $container) {
    var $selectionContainer = $container.find('.selection');
    $selectionContainer.append($selection);
  };

  BaseSelection.prototype.destroy = function () {
    this._detachCloseHandler(this.container);
  };

  BaseSelection.prototype.update = function (data) {
    throw new Error('The `update` method must be defined in child classes.');
  };

  return BaseSelection;
});

S2.define('select2/selection/single',[
  'jquery',
  './base',
  '../utils',
  '../keys'
], function ($, BaseSelection, Utils, KEYS) {
  function SingleSelection () {
    SingleSelection.__super__.constructor.apply(this, arguments);
  }

  Utils.Extend(SingleSelection, BaseSelection);

  SingleSelection.prototype.render = function () {
    var $selection = SingleSelection.__super__.render.call(this);

    $selection.addClass('select2-selection--single');

    $selection.html(
      '<span class="select2-selection__rendered"></span>' +
      '<span class="select2-selection__arrow" role="presentation">' +
        '<b role="presentation"></b>' +
      '</span>'
    );

    return $selection;
  };

  SingleSelection.prototype.bind = function (container, $container) {
    var self = this;

    SingleSelection.__super__.bind.apply(this, arguments);

    var id = container.id + '-container';

    this.$selection.find('.select2-selection__rendered').attr('id', id);
    this.$selection.attr('aria-labelledby', id);

    this.$selection.on('mousedown', function (evt) {
      // Only respond to left clicks
      if (evt.which !== 1) {
        return;
      }

      self.trigger('toggle', {
        originalEvent: evt
      });
    });

    this.$selection.on('focus', function (evt) {
      // User focuses on the container
    });

    this.$selection.on('blur', function (evt) {
      // User exits the container
    });

    container.on('focus', function (evt) {
      if (!container.isOpen()) {
        self.$selection.focus();
      }
    });

    container.on('selection:update', function (params) {
      self.update(params.data);
    });
  };

  SingleSelection.prototype.clear = function () {
    this.$selection.find('.select2-selection__rendered').empty();
  };

  SingleSelection.prototype.display = function (data, container) {
    var template = this.options.get('templateSelection');
    var escapeMarkup = this.options.get('escapeMarkup');

    return escapeMarkup(template(data, container));
  };

  SingleSelection.prototype.selectionContainer = function () {
    return $('<span></span>');
  };

  SingleSelection.prototype.update = function (data) {
    if (data.length === 0) {
      this.clear();
      return;
    }

    var selection = data[0];

    var $rendered = this.$selection.find('.select2-selection__rendered');
    var formatted = this.display(selection, $rendered);

    $rendered.empty().append(formatted);
    $rendered.prop('title', selection.title || selection.text);
  };

  return SingleSelection;
});

S2.define('select2/selection/multiple',[
  'jquery',
  './base',
  '../utils'
], function ($, BaseSelection, Utils) {
  function MultipleSelection ($element, options) {
    MultipleSelection.__super__.constructor.apply(this, arguments);
  }

  Utils.Extend(MultipleSelection, BaseSelection);

  MultipleSelection.prototype.render = function () {
    var $selection = MultipleSelection.__super__.render.call(this);

    $selection.addClass('select2-selection--multiple');

    $selection.html(
      '<ul class="select2-selection__rendered"></ul>'
    );

    return $selection;
  };

  MultipleSelection.prototype.bind = function (container, $container) {
    var self = this;

    MultipleSelection.__super__.bind.apply(this, arguments);

    this.$selection.on('click', function (evt) {
      self.trigger('toggle', {
        originalEvent: evt
      });
    });

    this.$selection.on(
      'click',
      '.select2-selection__choice__remove',
      function (evt) {
        // Ignore the event if it is disabled
        if (self.options.get('disabled')) {
          return;
        }

        var $remove = $(this);
        var $selection = $remove.parent();

        var data = $selection.data('data');

        self.trigger('unselect', {
          originalEvent: evt,
          data: data
        });
      }
    );
  };

  MultipleSelection.prototype.clear = function () {
    this.$selection.find('.select2-selection__rendered').empty();
  };

  MultipleSelection.prototype.display = function (data, container) {
    var template = this.options.get('templateSelection');
    var escapeMarkup = this.options.get('escapeMarkup');

    return escapeMarkup(template(data, container));
  };

  MultipleSelection.prototype.selectionContainer = function () {
    var $container = $(
      '<li class="select2-selection__choice">' +
        '<span class="select2-selection__choice__remove" role="presentation">' +
          '&times;' +
        '</span>' +
      '</li>'
    );

    return $container;
  };

  MultipleSelection.prototype.update = function (data) {
    this.clear();

    if (data.length === 0) {
      return;
    }

    var $selections = [];

    for (var d = 0; d < data.length; d++) {
      var selection = data[d];

      var $selection = this.selectionContainer();
      var formatted = this.display(selection, $selection);

      $selection.append(formatted);
      $selection.prop('title', selection.title || selection.text);

      $selection.data('data', selection);

      $selections.push($selection);
    }

    var $rendered = this.$selection.find('.select2-selection__rendered');

    Utils.appendMany($rendered, $selections);
  };

  return MultipleSelection;
});

S2.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.createPlaceholder = function (decorated, placeholder) {
    var $placeholder = this.selectionContainer();

    $placeholder.html(this.display(placeholder));
    $placeholder.addClass('select2-selection__placeholder')
                .removeClass('select2-selection__choice');

    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.createPlaceholder(this.placeholder);

    this.$selection.find('.select2-selection__rendered').append($placeholder);
  };

  return Placeholder;
});

S2.define('select2/selection/allowClear',[
  'jquery',
  '../keys'
], function ($, KEYS) {
  function AllowClear () { }

  AllowClear.prototype.bind = function (decorated, container, $container) {
    var self = this;

    decorated.call(this, container, $container);

    if (this.placeholder == null) {
      if (this.options.get('debug') && window.console && console.error) {
        console.error(
          'Select2: The `allowClear` option should be used in combination ' +
          'with the `placeholder` option.'
        );
      }
    }

    this.$selection.on('mousedown', '.select2-selection__clear',
      function (evt) {
        self._handleClear(evt);
    });

    container.on('keypress', function (evt) {
      self._handleKeyboardClear(evt, container);
    });
  };

  AllowClear.prototype._handleClear = function (_, evt) {
    // Ignore the event if it is disabled
    if (this.options.get('disabled')) {
      return;
    }

    var $clear = this.$selection.find('.select2-selection__clear');

    // Ignore the event if nothing has been selected
    if ($clear.length === 0) {
      return;
    }

    evt.stopPropagation();

    var data = $clear.data('data');

    for (var d = 0; d < data.length; d++) {
      var unselectData = {
        data: data[d]
      };

      // Trigger the `unselect` event, so people can prevent it from being
      // cleared.
      this.trigger('unselect', unselectData);

      // If the event was prevented, don't clear it out.
      if (unselectData.prevented) {
        return;
      }
    }

    this.$element.val(this.placeholder.id).trigger('change');

    this.trigger('toggle', {});
  };

  AllowClear.prototype._handleKeyboardClear = function (_, evt, container) {
    if (container.isOpen()) {
      return;
    }

    if (evt.which == KEYS.DELETE || evt.which == KEYS.BACKSPACE) {
      this._handleClear(evt);
    }
  };

  AllowClear.prototype.update = function (decorated, data) {
    decorated.call(this, data);

    if (this.$selection.find('.select2-selection__placeholder').length > 0 ||
        data.length === 0) {
      return;
    }

    var $remove = $(
      '<span class="select2-selection__clear">' +
        '&times;' +
      '</span>'
    );
    $remove.data('data', data);

    this.$selection.find('.select2-selection__rendered').prepend($remove);
  };

  return AllowClear;
});

S2.define('select2/selection/search',[
  'jquery',
  '../utils',
  '../keys'
], function ($, Utils, KEYS) {
  function Search (decorated, $el