resources/lib/jquery.chosen/chosen.jquery.js

   1 /*!
   2 Chosen, a Select Box Enhancer for jQuery and Prototype
   3 by Patrick Filler for Harvest, http://getharvest.com
   4
   5 Version 1.8.2
   6 Full source at https://github.com/harvesthq/chosen
   7 Copyright (c) 2011-2017 Harvest http://getharvest.com
   8
   9 MIT License, https://github.com/harvesthq/chosen/blob/master/LICENSE.md
  10 This file is generated by `grunt build`, do not edit it by hand.
  11 */
  12
  13 (function() {
  14   var $, AbstractChosen, Chosen, SelectParser,
  15     bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
  16     extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
  17     hasProp = {}.hasOwnProperty;
  18
  19   SelectParser = (function() {
  20     function SelectParser() {
  21       this.options_index = 0;
  22       this.parsed = [];
  23     }
  24
  25     SelectParser.prototype.add_node = function(child) {
  26       if (child.nodeName.toUpperCase() === "OPTGROUP") {
  27         return this.add_group(child);
  28       } else {
  29         return this.add_option(child);
  30       }
  31     };
  32
  33     SelectParser.prototype.add_group = function(group) {
  34       var group_position, i, len, option, ref, results1;
  35       group_position = this.parsed.length;
  36       this.parsed.push({
  37         array_index: group_position,
  38         group: true,
  39         label: group.label,
  40         title: group.title ? group.title : void 0,
  41         children: 0,
  42         disabled: group.disabled,
  43         classes: group.className
  44       });
  45       ref = group.childNodes;
  46       results1 = [];
  47       for (i = 0, len = ref.length; i < len; i++) {
  48         option = ref[i];
  49         results1.push(this.add_option(option, group_position, group.disabled));
  50       }
  51       return results1;
  52     };
  53
  54     SelectParser.prototype.add_option = function(option, group_position, group_disabled) {
  55       if (option.nodeName.toUpperCase() === "OPTION") {
  56         if (option.text !== "") {
  57           if (group_position != null) {
  58             this.parsed[group_position].children += 1;
  59           }
  60           this.parsed.push({
  61             array_index: this.parsed.length,
  62             options_index: this.options_index,
  63             value: option.value,
  64             text: option.text,
  65             html: option.innerHTML,
  66             title: option.title ? option.title : void 0,
  67             selected: option.selected,
  68             disabled: group_disabled === true ? group_disabled : option.disabled,
  69             group_array_index: group_position,
  70             group_label: group_position != null ? this.parsed[group_position].label : null,
  71             classes: option.className,
  72             style: option.style.cssText
  73           });
  74         } else {
  75           this.parsed.push({
  76             array_index: this.parsed.length,
  77             options_index: this.options_index,
  78             empty: true
  79           });
  80         }
  81         return this.options_index += 1;
  82       }
  83     };
  84
  85     return SelectParser;
  86
  87   })();
  88
  89   SelectParser.select_to_array = function(select) {
  90     var child, i, len, parser, ref;
  91     parser = new SelectParser();
  92     ref = select.childNodes;
  93     for (i = 0, len = ref.length; i < len; i++) {
  94       child = ref[i];
  95       parser.add_node(child);
  96     }
  97     return parser.parsed;
  98   };
  99
 100   AbstractChosen = (function() {
 101     function AbstractChosen(form_field, options1) {
 102       this.form_field = form_field;
 103       this.options = options1 != null ? options1 : {};
 104       this.label_click_handler = bind(this.label_click_handler, this);
 105       if (!AbstractChosen.browser_is_supported()) {
 106         return;
 107       }
 108       this.is_multiple = this.form_field.multiple;
 109       this.set_default_text();
 110       this.set_default_values();
 111       this.setup();
 112       this.set_up_html();
 113       this.register_observers();
 114       this.on_ready();
 115     }
 116
 117     AbstractChosen.prototype.set_default_values = function() {
 118       this.click_test_action = (function(_this) {
 119         return function(evt) {
 120           return _this.test_active_click(evt);
 121         };
 122       })(this);
 123       this.activate_action = (function(_this) {
 124         return function(evt) {
 125           return _this.activate_field(evt);
 126         };
 127       })(this);
 128       this.active_field = false;
 129       this.mouse_on_container = false;
 130       this.results_showing = false;
 131       this.result_highlighted = null;
 132       this.is_rtl = this.options.rtl || /\bchosen-rtl\b/.test(this.form_field.className);
 133       this.allow_single_deselect = (this.options.allow_single_deselect != null) && (this.form_field.options[0] != null) && this.form_field.options[0].text === "" ? this.options.allow_single_deselect : false;
 134       this.disable_search_threshold = this.options.disable_search_threshold || 0;
 135       this.disable_search = this.options.disable_search || false;
 136       this.enable_split_word_search = this.options.enable_split_word_search != null ? this.options.enable_split_word_search : true;
 137       this.group_search = this.options.group_search != null ? this.options.group_search : true;
 138       this.search_contains = this.options.search_contains || false;
 139       this.single_backstroke_delete = this.options.single_backstroke_delete != null ? this.options.single_backstroke_delete : true;
 140       this.max_selected_options = this.options.max_selected_options || Infinity;
 141       this.inherit_select_classes = this.options.inherit_select_classes || false;
 142       this.display_selected_options = this.options.display_selected_options != null ? this.options.display_selected_options : true;
 143       this.display_disabled_options = this.options.display_disabled_options != null ? this.options.display_disabled_options : true;
 144       this.include_group_label_in_selected = this.options.include_group_label_in_selected || false;
 145       this.max_shown_results = this.options.max_shown_results || Number.POSITIVE_INFINITY;
 146       this.case_sensitive_search = this.options.case_sensitive_search || false;
 147       return this.hide_results_on_select = this.options.hide_results_on_select != null ? this.options.hide_results_on_select : true;
 148     };
 149
 150     AbstractChosen.prototype.set_default_text = function() {
 151       if (this.form_field.getAttribute("data-placeholder")) {
 152         this.default_text = this.form_field.getAttribute("data-placeholder");
 153       } else if (this.is_multiple) {
 154         this.default_text = this.options.placeholder_text_multiple || this.options.placeholder_text || AbstractChosen.default_multiple_text;
 155       } else {
 156         this.default_text = this.options.placeholder_text_single || this.options.placeholder_text || AbstractChosen.default_single_text;
 157       }
 158       this.default_text = this.escape_html(this.default_text);
 159       return this.results_none_found = this.form_field.getAttribute("data-no_results_text") || this.options.no_results_text || AbstractChosen.default_no_result_text;
 160     };
 161
 162     AbstractChosen.prototype.choice_label = function(item) {
 163       if (this.include_group_label_in_selected && (item.group_label != null)) {
 164         return "<b class='group-name'>" + item.group_label + "</b>" + item.html;
 165       } else {
 166         return item.html;
 167       }
 168     };
 169
 170     AbstractChosen.prototype.mouse_enter = function() {
 171       return this.mouse_on_container = true;
 172     };
 173
 174     AbstractChosen.prototype.mouse_leave = function() {
 175       return this.mouse_on_container = false;
 176     };
 177
 178     AbstractChosen.prototype.input_focus = function(evt) {
 179       if (this.is_multiple) {
 180         if (!this.active_field) {
 181           return setTimeout(((function(_this) {
 182             return function() {
 183               return _this.container_mousedown();
 184             };
 185           })(this)), 50);
 186         }
 187       } else {
 188         if (!this.active_field) {
 189           return this.activate_field();
 190         }
 191       }
 192     };
 193
 194     AbstractChosen.prototype.input_blur = function(evt) {
 195       if (!this.mouse_on_container) {
 196         this.active_field = false;
 197         return setTimeout(((function(_this) {
 198           return function() {
 199             return _this.blur_test();
 200           };
 201         })(this)), 100);
 202       }
 203     };
 204
 205     AbstractChosen.prototype.label_click_handler = function(evt) {
 206       if (this.is_multiple) {
 207         return this.container_mousedown(evt);
 208       } else {
 209         return this.activate_field();
 210       }
 211     };
 212
 213     AbstractChosen.prototype.results_option_build = function(options) {
 214       var content, data, data_content, i, len, ref, shown_results;
 215       content = '';
 216       shown_results = 0;
 217       ref = this.results_data;
 218       for (i = 0, len = ref.length; i < len; i++) {
 219         data = ref[i];
 220         data_content = '';
 221         if (data.group) {
 222           data_content = this.result_add_group(data);
 223         } else {
 224           data_content = this.result_add_option(data);
 225         }
 226         if (data_content !== '') {
 227           shown_results++;
 228           content += data_content;
 229         }
 230         if (options != null ? options.first : void 0) {
 231           if (data.selected && this.is_multiple) {
 232             this.choice_build(data);
 233           } else if (data.selected && !this.is_multiple) {
 234             this.single_set_selected_text(this.choice_label(data));
 235           }
 236         }
 237         if (shown_results >= this.max_shown_results) {
 238           break;
 239         }
 240       }
 241       return content;
 242     };
 243
 244     AbstractChosen.prototype.result_add_option = function(option) {
 245       var classes, option_el;
 246       if (!option.search_match) {
 247         return '';
 248       }
 249       if (!this.include_option_in_results(option)) {
 250         return '';
 251       }
 252       classes = [];
 253       if (!option.disabled && !(option.selected && this.is_multiple)) {
 254         classes.push("active-result");
 255       }
 256       if (option.disabled && !(option.selected && this.is_multiple)) {
 257         classes.push("disabled-result");
 258       }
 259       if (option.selected) {
 260         classes.push("result-selected");
 261       }
 262       if (option.group_array_index != null) {
 263         classes.push("group-option");
 264       }
 265       if (option.classes !== "") {
 266         classes.push(option.classes);
 267       }
 268       option_el = document.createElement("li");
 269       option_el.className = classes.join(" ");
 270       option_el.style.cssText = option.style;
 271       option_el.setAttribute("data-option-array-index", option.array_index);
 272       option_el.innerHTML = option.highlighted_html || option.html;
 273       if (option.title) {
 274         option_el.title = option.title;
 275       }
 276       return this.outerHTML(option_el);
 277     };
 278
 279     AbstractChosen.prototype.result_add_group = function(group) {
 280       var classes, group_el;
 281       if (!(group.search_match || group.group_match)) {
 282         return '';
 283       }
 284       if (!(group.active_options > 0)) {
 285         return '';
 286       }
 287       classes = [];
 288       classes.push("group-result");
 289       if (group.classes) {
 290         classes.push(group.classes);
 291       }
 292       group_el = document.createElement("li");
 293       group_el.className = classes.join(" ");
 294       group_el.innerHTML = group.highlighted_html || this.escape_html(group.label);
 295       if (group.title) {
 296         group_el.title = group.title;
 297       }
 298       return this.outerHTML(group_el);
 299     };
 300
 301     AbstractChosen.prototype.results_update_field = function() {
 302       this.set_default_text();
 303       if (!this.is_multiple) {
 304         this.results_reset_cleanup();
 305       }
 306       this.result_clear_highlight();
 307       this.results_build();
 308       if (this.results_showing) {
 309         return this.winnow_results();
 310       }
 311     };
 312
 313     AbstractChosen.prototype.reset_single_select_options = function() {
 314       var i, len, ref, result, results1;
 315       ref = this.results_data;
 316       results1 = [];
 317       for (i = 0, len = ref.length; i < len; i++) {
 318         result = ref[i];
 319         if (result.selected) {
 320           results1.push(result.selected = false);
 321         } else {
 322           results1.push(void 0);
 323         }
 324       }
 325       return results1;
 326     };
 327
 328     AbstractChosen.prototype.results_toggle = function() {
 329       if (this.results_showing) {
 330         return this.results_hide();
 331       } else {
 332         return this.results_show();
 333       }
 334     };
 335
 336     AbstractChosen.prototype.results_search = function(evt) {
 337       if (this.results_showing) {
 338         return this.winnow_results();
 339       } else {
 340         return this.results_show();
 341       }
 342     };
 343
 344     AbstractChosen.prototype.winnow_results = function() {
 345       var escapedQuery, fix, i, len, option, prefix, query, ref, regex, results, results_group, search_match, startpos, suffix, text;
 346       this.no_results_clear();
 347       results = 0;
 348       query = this.get_search_text();
 349       escapedQuery = query.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
 350       regex = this.get_search_regex(escapedQuery);
 351       ref = this.results_data;
 352       for (i = 0, len = ref.length; i < len; i++) {
 353         option = ref[i];
 354         option.search_match = false;
 355         results_group = null;
 356         search_match = null;
 357         option.highlighted_html = '';
 358         if (this.include_option_in_results(option)) {
 359           if (option.group) {
 360             option.group_match = false;
 361             option.active_options = 0;
 362           }
 363           if ((option.group_array_index != null) && this.results_data[option.group_array_index]) {
 364             results_group = this.results_data[option.group_array_index];
 365             if (results_group.active_options === 0 && results_group.search_match) {
 366               results += 1;
 367             }
 368             results_group.active_options += 1;
 369           }
 370           text = option.group ? option.label : option.text;
 371           if (!(option.group && !this.group_search)) {
 372             search_match = this.search_string_match(text, regex);
 373             option.search_match = search_match != null;
 374             if (option.search_match && !option.group) {
 375               results += 1;
 376             }
 377             if (option.search_match) {
 378               if (query.length) {
 379                 startpos = search_match.index;
 380                 prefix = text.slice(0, startpos);
 381                 fix = text.slice(startpos, startpos + query.length);
 382                 suffix = text.slice(startpos + query.length);
 383                 option.highlighted_html = (this.escape_html(prefix)) + "<em>" + (this.escape_html(fix)) + "</em>" + (this.escape_html(suffix));
 384               }
 385               if (results_group != null) {
 386                 results_group.group_match = true;
 387               }
 388             } else if ((option.group_array_index != null) && this.results_data[option.group_array_index].search_match) {
 389               option.search_match = true;
 390             }
 391           }
 392         }
 393       }
 394       this.result_clear_highlight();
 395       if (results < 1 && query.length) {
 396         this.update_results_content("");
 397         return this.no_results(query);
 398       } else {
 399         this.update_results_content(this.results_option_build());
 400         return this.winnow_results_set_highlight();
 401       }
 402     };
 403
 404     AbstractChosen.prototype.get_search_regex = function(escaped_search_string) {
 405       var regex_flag, regex_string;
 406       regex_string = this.search_contains ? escaped_search_string : "(^|\\s|\\b)" + escaped_search_string + "[^\\s]*";
 407       if (!(this.enable_split_word_search || this.search_contains)) {
 408         regex_string = "^" + regex_string;
 409       }
 410       regex_flag = this.case_sensitive_search ? "" : "i";
 411       return new RegExp(regex_string, regex_flag);
 412     };
 413
 414     AbstractChosen.prototype.search_string_match = function(search_string, regex) {
 415       var match;
 416       match = regex.exec(search_string);
 417       if (!this.search_contains && (match != null ? match[1] : void 0)) {
 418         match.index += 1;
 419       }
 420       return match;
 421     };
 422
 423     AbstractChosen.prototype.choices_count = function() {
 424       var i, len, option, ref;
 425       if (this.selected_option_count != null) {
 426         return this.selected_option_count;
 427       }
 428       this.selected_option_count = 0;
 429       ref = this.form_field.options;
 430       for (i = 0, len = ref.length; i < len; i++) {
 431         option = ref[i];
 432         if (option.selected) {
 433           this.selected_option_count += 1;
 434         }
 435       }
 436       return this.selected_option_count;
 437     };
 438
 439     AbstractChosen.prototype.choices_click = function(evt) {
 440       evt.preventDefault();
 441       this.activate_field();
 442       if (!(this.results_showing || this.is_disabled)) {
 443         return this.results_show();
 444       }
 445     };
 446
 447     AbstractChosen.prototype.keydown_checker = function(evt) {
 448       var ref, stroke;
 449       stroke = (ref = evt.which) != null ? ref : evt.keyCode;
 450       this.search_field_scale();
 451       if (stroke !== 8 && this.pending_backstroke) {
 452         this.clear_backstroke();
 453       }
 454       switch (stroke) {
 455         case 8:
 456           this.backstroke_length = this.get_search_field_value().length;
 457           break;
 458         case 9:
 459           if (this.results_showing && !this.is_multiple) {
 460             this.result_select(evt);
 461           }
 462           this.mouse_on_container = false;
 463           break;
 464         case 13:
 465           if (this.results_showing) {
 466             evt.preventDefault();
 467           }
 468           break;
 469         case 27:
 470           if (this.results_showing) {
 471             evt.preventDefault();
 472           }
 473           break;
 474         case 32:
 475           if (this.disable_search) {
 476             evt.preventDefault();
 477           }
 478           break;
 479         case 38:
 480           evt.preventDefault();
 481           this.keyup_arrow();
 482           break;
 483         case 40:
 484           evt.preventDefault();
 485           this.keydown_arrow();
 486           break;
 487       }
 488     };
 489
 490     AbstractChosen.prototype.keyup_checker = function(evt) {
 491       var ref, stroke;
 492       stroke = (ref = evt.which) != null ? ref : evt.keyCode;
 493       this.search_field_scale();
 494       switch (stroke) {
 495         case 8:
 496           if (this.is_multiple && this.backstroke_length < 1 && this.choices_count() > 0) {
 497             this.keydown_backstroke();
 498           } else if (!this.pending_backstroke) {
 499             this.result_clear_highlight();
 500             this.results_search();
 501           }
 502           break;
 503         case 13:
 504           evt.preventDefault();
 505           if (this.results_showing) {
 506             this.result_select(evt);
 507           }
 508           break;
 509         case 27:
 510           if (this.results_showing) {
 511             this.results_hide();
 512           }
 513           break;
 514         case 9:
 515         case 16:
 516         case 17:
 517         case 18:
 518         case 38:
 519         case 40:
 520         case 91:
 521           break;
 522         default:
 523           this.results_search();
 524           break;
 525       }
 526     };
 527
 528     AbstractChosen.prototype.clipboard_event_checker = function(evt) {
 529       if (this.is_disabled) {
 530         return;
 531       }
 532       return setTimeout(((function(_this) {
 533         return function() {
 534           return _this.results_search();
 535         };
 536       })(this)), 50);
 537     };
 538
 539     AbstractChosen.prototype.container_width = function() {
 540       if (this.options.width != null) {
 541         return this.options.width;
 542       } else {
 543         return this.form_field.offsetWidth + "px";
 544       }
 545     };
 546
 547     AbstractChosen.prototype.include_option_in_results = function(option) {
 548       if (this.is_multiple && (!this.display_selected_options && option.selected)) {
 549         return false;
 550       }
 551       if (!this.display_disabled_options && option.disabled) {
 552         return false;
 553       }
 554       if (option.empty) {
 555         return false;
 556       }
 557       return true;
 558     };
 559
 560     AbstractChosen.prototype.search_results_touchstart = function(evt) {
 561       this.touch_started = true;
 562       return this.search_results_mouseover(evt);
 563     };
 564
 565     AbstractChosen.prototype.search_results_touchmove = function(evt) {
 566       this.touch_started = false;
 567       return this.search_results_mouseout(evt);
 568     };
 569
 570     AbstractChosen.prototype.search_results_touchend = function(evt) {
 571       if (this.touch_started) {
 572         return this.search_results_mouseup(evt);
 573       }
 574     };
 575
 576     AbstractChosen.prototype.outerHTML = function(element) {
 577       var tmp;
 578       if (element.outerHTML) {
 579         return element.outerHTML;
 580       }
 581       tmp = document.createElement("div");
 582       tmp.appendChild(element);
 583       return tmp.innerHTML;
 584     };
 585
 586     AbstractChosen.prototype.get_single_html = function() {
 587       return "<a class=\"chosen-single chosen-default\">\n  <span>" + this.default_text + "</span>\n  <div><b></b></div>\n</a>\n<div class=\"chosen-drop\">\n  <div class=\"chosen-search\">\n    <input class=\"chosen-search-input\" type=\"text\" autocomplete=\"off\" />\n  </div>\n  <ul class=\"chosen-results\"></ul>\n</div>";
 588     };
 589
 590     AbstractChosen.prototype.get_multi_html = function() {
 591       return "<ul class=\"chosen-choices\">\n  <li class=\"search-field\">\n    <input class=\"chosen-search-input\" type=\"text\" autocomplete=\"off\" value=\"" + this.default_text + "\" />\n  </li>\n</ul>\n<div class=\"chosen-drop\">\n  <ul class=\"chosen-results\"></ul>\n</div>";
 592     };
 593
 594     AbstractChosen.prototype.get_no_results_html = function(terms) {
 595       return "<li class=\"no-results\">\n  " + this.results_none_found + " <span>" + (this.escape_html(terms)) + "</span>\n</li>";
 596     };
 597
 598     AbstractChosen.browser_is_supported = function() {
 599       if ("Microsoft Internet Explorer" === window.navigator.appName) {
 600         return document.documentMode >= 8;
 601       }
 602       if (/iP(od|hone)/i.test(window.navigator.userAgent) || /IEMobile/i.test(window.navigator.userAgent) || /Windows Phone/i.test(window.navigator.userAgent) || /BlackBerry/i.test(window.navigator.userAgent) || /BB10/i.test(window.navigator.userAgent) || /Android.*Mobile/i.test(window.navigator.userAgent)) {
 603         return false;
 604       }
 605       return true;
 606     };
 607
 608     AbstractChosen.default_multiple_text = "Select Some Options";
 609
 610     AbstractChosen.default_single_text = "Select an Option";
 611
 612     AbstractChosen.default_no_result_text = "No results match";
 613
 614     return AbstractChosen;
 615
 616   })();
 617
 618   $ = jQuery;
 619
 620   $.fn.extend({
 621     chosen: function(options) {
 622       if (!AbstractChosen.browser_is_supported()) {
 623         return this;
 624       }
 625       return this.each(function(input_field) {
 626         var $this, chosen;
 627         $this = $(this);
 628         chosen = $this.data('chosen');
 629         if (options === 'destroy') {
 630           if (chosen instanceof Chosen) {
 631             chosen.destroy();
 632           }
 633           return;
 634         }
 635         if (!(chosen instanceof Chosen)) {
 636           $this.data('chosen', new Chosen(this, options));
 637         }
 638       });
 639     }
 640   });
 641
 642   Chosen = (function(superClass) {
 643     extend(Chosen, superClass);
 644
 645     function Chosen() {
 646       return Chosen.__super__.constructor.apply(this, arguments);
 647     }
 648
 649     Chosen.prototype.setup = function() {
 650       this.form_field_jq = $(this.form_field);
 651       return this.current_selectedIndex = this.form_field.selectedIndex;
 652     };
 653
 654     Chosen.prototype.set_up_html = function() {
 655       var container_classes, container_props;
 656       container_classes = ["chosen-container"];
 657       container_classes.push("chosen-container-" + (this.is_multiple ? "multi" : "single"));
 658       if (this.inherit_select_classes && this.form_field.className) {
 659         container_classes.push(this.form_field.className);
 660       }
 661       if (this.is_rtl) {
 662         container_classes.push("chosen-rtl");
 663       }
 664       container_props = {
 665         'class': container_classes.join(' '),
 666         'title': this.form_field.title
 667       };
 668       if (this.form_field.id.length) {
 669         container_props.id = this.form_field.id.replace(/[^\w]/g, '_') + "_chosen";
 670       }
 671       this.container = $("<div />", container_props);
 672       this.container.width(this.container_width());
 673       if (this.is_multiple) {
 674         this.container.html(this.get_multi_html());
 675       } else {
 676         this.container.html(this.get_single_html());
 677       }
 678       this.form_field_jq.hide().after(this.container);
 679       this.dropdown = this.container.find('div.chosen-drop').first();
 680       this.search_field = this.container.find('input').first();
 681       this.search_results = this.container.find('ul.chosen-results').first();
 682       this.search_field_scale();
 683       this.search_no_results = this.container.find('li.no-results').first();
 684       if (this.is_multiple) {
 685         this.search_choices = this.container.find('ul.chosen-choices').first();
 686         this.search_container = this.container.find('li.search-field').first();
 687       } else {
 688         this.search_container = this.container.find('div.chosen-search').first();
 689         this.selected_item = this.container.find('.chosen-single').first();
 690       }
 691       this.results_build();
 692       this.set_tab_index();
 693       return this.set_label_behavior();
 694     };
 695
 696     Chosen.prototype.on_ready = function() {
 697       return this.form_field_jq.trigger("chosen:ready", {
 698         chosen: this
 699       });
 700     };
 701
 702     Chosen.prototype.register_observers = function() {
 703       this.container.on('touchstart.chosen', (function(_this) {
 704         return function(evt) {
 705           _this.container_mousedown(evt);
 706         };
 707       })(this));
 708       this.container.on('touchend.chosen', (function(_this) {
 709         return function(evt) {
 710           _this.container_mouseup(evt);
 711         };
 712       })(this));
 713       this.container.on('mousedown.chosen', (function(_this) {
 714         return function(evt) {
 715           _this.container_mousedown(evt);
 716         };
 717       })(this));
 718       this.container.on('mouseup.chosen', (function(_this) {
 719         return function(evt) {
 720           _this.container_mouseup(evt);
 721         };
 722       })(this));
 723       this.container.on('mouseenter.chosen', (function(_this) {
 724         return function(evt) {
 725           _this.mouse_enter(evt);
 726         };
 727       })(this));
 728       this.container.on('mouseleave.chosen', (function(_this) {
 729         return function(evt) {
 730           _this.mouse_leave(evt);
 731         };
 732       })(this));
 733       this.search_results.on('mouseup.chosen', (function(_this) {
 734         return function(evt) {
 735           _this.search_results_mouseup(evt);
 736         };
 737       })(this));
 738       this.search_results.on('mouseover.chosen', (function(_this) {
 739         return function(evt) {
 740           _this.search_results_mouseover(evt);
 741         };
 742       })(this));
 743       this.search_results.on('mouseout.chosen', (function(_this) {
 744         return function(evt) {
 745           _this.search_results_mouseout(evt);
 746         };
 747       })(this));
 748       this.search_results.on('mousewheel.chosen DOMMouseScroll.chosen', (function(_this) {
 749         return function(evt) {
 750           _this.search_results_mousewheel(evt);
 751         };
 752       })(this));
 753       this.search_results.on('touchstart.chosen', (function(_this) {
 754         return function(evt) {
 755           _this.search_results_touchstart(evt);
 756         };
 757       })(this));
 758       this.search_results.on('touchmove.chosen', (function(_this) {
 759         return function(evt) {
 760           _this.search_results_touchmove(evt);
 761         };
 762       })(this));
 763       this.search_results.on('touchend.chosen', (function(_this) {
 764         return function(evt) {
 765           _this.search_results_touchend(evt);
 766         };
 767       })(this));
 768       this.form_field_jq.on("chosen:updated.chosen", (function(_this) {
 769         return function(evt) {
 770           _this.results_update_field(evt);
 771         };
 772       })(this));
 773       this.form_field_jq.on("chosen:activate.chosen", (function(_this) {
 774         return function(evt) {
 775           _this.activate_field(evt);
 776         };
 777       })(this));
 778       this.form_field_jq.on("chosen:open.chosen", (function(_this) {
 779         return function(evt) {
 780           _this.container_mousedown(evt);
 781         };
 782       })(this));
 783       this.form_field_jq.on("chosen:close.chosen", (function(_this) {
 784         return function(evt) {
 785           _this.close_field(evt);
 786         };
 787       })(this));
 788       this.search_field.on('blur.chosen', (function(_this) {
 789         return function(evt) {
 790           _this.input_blur(evt);
 791         };
 792       })(this));
 793       this.search_field.on('keyup.chosen', (function(_this) {
 794         return function(evt) {
 795           _this.keyup_checker(evt);
 796         };
 797       })(this));
 798       this.search_field.on('keydown.chosen', (function(_this) {
 799         return function(evt) {
 800           _this.keydown_checker(evt);
 801         };
 802       })(this));
 803       this.search_field.on('focus.chosen', (function(_this) {
 804         return function(evt) {
 805           _this.input_focus(evt);
 806         };
 807       })(this));
 808       this.search_field.on('cut.chosen', (function(_this) {
 809         return function(evt) {
 810           _this.clipboard_event_checker(evt);
 811         };
 812       })(this));
 813       this.search_field.on('paste.chosen', (function(_this) {
 814         return function(evt) {
 815           _this.clipboard_event_checker(evt);
 816         };
 817       })(this));
 818       if (this.is_multiple) {
 819         return this.search_choices.on('click.chosen', (function(_this) {
 820           return function(evt) {
 821             _this.choices_click(evt);
 822           };
 823         })(this));
 824       } else {
 825         return this.container.on('click.chosen', function(evt) {
 826           evt.preventDefault();
 827         });
 828       }
 829     };
 830
 831     Chosen.prototype.destroy = function() {
 832       $(this.container[0].ownerDocument).off('click.chosen', this.click_test_action);
 833       if (this.form_field_label.length > 0) {
 834         this.form_field_label.off('click.chosen');
 835       }
 836       if (this.search_field[0].tabIndex) {
 837         this.form_field_jq[0].tabIndex = this.search_field[0].tabIndex;
 838       }
 839       this.container.remove();
 840       this.form_field_jq.removeData('chosen');
 841       return this.form_field_jq.show();
 842     };
 843
 844     Chosen.prototype.search_field_disabled = function() {
 845       this.is_disabled = this.form_field.disabled || this.form_field_jq.parents('fieldset').is(':disabled');
 846       this.container.toggleClass('chosen-disabled', this.is_disabled);
 847       this.search_field[0].disabled = this.is_disabled;
 848       if (!this.is_multiple) {
 849         this.selected_item.off('focus.chosen', this.activate_field);
 850       }
 851       if (this.is_disabled) {
 852         return this.close_field();
 853       } else if (!this.is_multiple) {
 854         return this.selected_item.on('focus.chosen', this.activate_field);
 855       }
 856     };
 857
 858     Chosen.prototype.container_mousedown = function(evt) {
 859       var ref;
 860       if (this.is_disabled) {
 861         return;
 862       }
 863       if (evt && ((ref = evt.type) === 'mousedown' || ref === 'touchstart') && !this.results_showing) {
 864         evt.preventDefault();
 865       }
 866       if (!((evt != null) && ($(evt.target)).hasClass("search-choice-close"))) {
 867         if (!this.active_field) {
 868           if (this.is_multiple) {
 869             this.search_field.val("");
 870           }
 871           $(this.container[0].ownerDocument).on('click.chosen', this.click_test_action);
 872           this.results_show();
 873         } else if (!this.is_multiple && evt && (($(evt.target)[0] === this.selected_item[0]) || $(evt.target).parents("a.chosen-single").length)) {
 874           evt.preventDefault();
 875           this.results_toggle();
 876         }
 877         return this.activate_field();
 878       }
 879     };
 880
 881     Chosen.prototype.container_mouseup = function(evt) {
 882       if (evt.target.nodeName === "ABBR" && !this.is_disabled) {
 883         return this.results_reset(evt);
 884       }
 885     };
 886
 887     Chosen.prototype.search_results_mousewheel = function(evt) {
 888       var delta;
 889       if (evt.originalEvent) {
 890         delta = evt.originalEvent.deltaY || -evt.originalEvent.wheelDelta || evt.originalEvent.detail;
 891       }
 892       if (delta != null) {
 893         evt.preventDefault();
 894         if (evt.type === 'DOMMouseScroll') {
 895           delta = delta * 40;
 896         }
 897         return this.search_results.scrollTop(delta + this.search_results.scrollTop());
 898       }
 899     };
 900
 901     Chosen.prototype.blur_test = function(evt) {
 902       if (!this.active_field && this.container.hasClass("chosen-container-active")) {
 903         return this.close_field();
 904       }
 905     };
 906
 907     Chosen.prototype.close_field = function() {
 908       $(this.container[0].ownerDocument).off("click.chosen", this.click_test_action);
 909       this.active_field = false;
 910       this.results_hide();
 911       this.container.removeClass("chosen-container-active");
 912       this.clear_backstroke();
 913       this.show_search_field_default();
 914       this.search_field_scale();
 915       return this.search_field.blur();
 916     };
 917
 918     Chosen.prototype.activate_field = function() {
 919       if (this.is_disabled) {
 920         return;
 921       }
 922       this.container.addClass("chosen-container-active");
 923       this.active_field = true;
 924       this.search_field.val(this.search_field.val());
 925       return this.search_field.focus();
 926     };
 927
 928     Chosen.prototype.test_active_click = function(evt) {
 929       var active_container;
 930       active_container = $(evt.target).closest('.chosen-container');
 931       if (active_container.length && this.container[0] === active_container[0]) {
 932         return this.active_field = true;
 933       } else {
 934         return this.close_field();
 935       }
 936     };
 937
 938     Chosen.prototype.results_build = function() {
 939       this.parsing = true;
 940       this.selected_option_count = null;
 941       this.results_data = SelectParser.select_to_array(this.form_field);
 942       if (this.is_multiple) {
 943         this.search_choices.find("li.search-choice").remove();
 944       } else if (!this.is_multiple) {
 945         this.single_set_selected_text();
 946         if (this.disable_search || this.form_field.options.length <= this.disable_search_threshold) {
 947           this.search_field[0].readOnly = true;
 948           this.container.addClass("chosen-container-single-nosearch");
 949         } else {
 950           this.search_field[0].readOnly = false;
 951           this.container.removeClass("chosen-container-single-nosearch");
 952         }
 953       }
 954       this.update_results_content(this.results_option_build({
 955         first: true
 956       }));
 957       this.search_field_disabled();
 958       this.show_search_field_default();
 959       this.search_field_scale();
 960       return this.parsing = false;
 961     };
 962
 963     Chosen.prototype.result_do_highlight = function(el) {
 964       var high_bottom, high_top, maxHeight, visible_bottom, visible_top;
 965       if (el.length) {
 966         this.result_clear_highlight();
 967         this.result_highlight = el;
 968         this.result_highlight.addClass("highlighted");
 969         maxHeight = parseInt(this.search_results.css("maxHeight"), 10);
 970         visible_top = this.search_results.scrollTop();
 971         visible_bottom = maxHeight + visible_top;
 972         high_top = this.result_highlight.position().top + this.search_results.scrollTop();
 973         high_bottom = high_top + this.result_highlight.outerHeight();
 974         if (high_bottom >= visible_bottom) {
 975           return this.search_results.scrollTop((high_bottom - maxHeight) > 0 ? high_bottom - maxHeight : 0);
 976         } else if (high_top < visible_top) {
 977           return this.search_results.scrollTop(high_top);
 978         }
 979       }
 980     };
 981
 982     Chosen.prototype.result_clear_highlight = function() {
 983       if (this.result_highlight) {
 984         this.result_highlight.removeClass("highlighted");
 985       }
 986       return this.result_highlight = null;
 987     };
 988
 989     Chosen.prototype.results_show = function() {
 990       if (this.is_multiple && this.max_selected_options <= this.choices_count()) {
 991         this.form_field_jq.trigger("chosen:maxselected", {
 992           chosen: this
 993         });
 994         return false;
 995       }
 996       this.container.addClass("chosen-with-drop");
 997       this.results_showing = true;
 998       this.search_field.focus();
 999       this.search_field.val(this.get_search_field_value());
1000       this.winnow_results();
1001       return this.form_field_jq.trigger("chosen:showing_dropdown", {
1002         chosen: this
1003       });
1004     };
1005
1006     Chosen.prototype.update_results_content = function(content) {
1007       return this.search_results.html(content);
1008     };
1009
1010     Chosen.prototype.results_hide = function() {
1011       if (this.results_showing) {
1012         this.result_clear_highlight();
1013         this.container.removeClass("chosen-with-drop");
1014         this.form_field_jq.trigger("chosen:hiding_dropdown", {
1015           chosen: this
1016         });
1017       }
1018       return this.results_showing = false;
1019     };
1020
1021     Chosen.prototype.set_tab_index = function(el) {
1022       var ti;
1023       if (this.form_field.tabIndex) {
1024         ti = this.form_field.tabIndex;
1025         this.form_field.tabIndex = -1;
1026         return this.search_field[0].tabIndex = ti;
1027       }
1028     };
1029
1030     Chosen.prototype.set_label_behavior = function() {
1031       this.form_field_label = this.form_field_jq.parents("label");
1032       if (!this.form_field_label.length && this.form_field.id.length) {
1033         this.form_field_label = $("label[for='" + this.form_field.id + "']");
1034       }
1035       if (this.form_field_label.length > 0) {
1036         return this.form_field_label.on('click.chosen', this.label_click_handler);
1037       }
1038     };
1039
1040     Chosen.prototype.show_search_field_default = function() {
1041       if (this.is_multiple && this.choices_count() < 1 && !this.active_field) {
1042         this.search_field.val(this.default_text);
1043         return this.search_field.addClass("default");
1044       } else {
1045         this.search_field.val("");
1046         return this.search_field.removeClass("default");
1047       }
1048     };
1049
1050     Chosen.prototype.search_results_mouseup = function(evt) {
1051       var target;
1052       target = $(evt.target).hasClass("active-result") ? $(evt.target) : $(evt.target).parents(".active-result").first();
1053       if (target.length) {
1054         this.result_highlight = target;
1055         this.result_select(evt);
1056         return this.search_field.focus();
1057       }
1058     };
1059
1060     Chosen.prototype.search_results_mouseover = function(evt) {
1061       var target;
1062       target = $(evt.target).hasClass("active-result") ? $(evt.target) : $(evt.target).parents(".active-result").first();
1063       if (target) {
1064         return this.result_do_highlight(target);
1065       }
1066     };
1067
1068     Chosen.prototype.search_results_mouseout = function(evt) {
1069       if ($(evt.target).hasClass("active-result") || $(evt.target).parents('.active-result').first()) {
1070         return this.result_clear_highlight();
1071       }
1072     };
1073
1074     Chosen.prototype.choice_build = function(item) {
1075       var choice, close_link;
1076       choice = $('<li />', {
1077         "class": "search-choice"
1078       }).html("<span>" + (this.choice_label(item)) + "</span>");
1079       if (item.disabled) {
1080         choice.addClass('search-choice-disabled');
1081       } else {
1082         close_link = $('<a />', {
1083           "class": 'search-choice-close',
1084           'data-option-array-index': item.array_index
1085         });
1086         close_link.on('click.chosen', (function(_this) {
1087           return function(evt) {
1088             return _this.choice_destroy_link_click(evt);
1089           };
1090         })(this));
1091         choice.append(close_link);
1092       }
1093       return this.search_container.before(choice);
1094     };
1095
1096     Chosen.prototype.choice_destroy_link_click = function(evt) {
1097       evt.preventDefault();
1098       evt.stopPropagation();
1099       if (!this.is_disabled) {
1100         return this.choice_destroy($(evt.target));
1101       }
1102     };
1103
1104     Chosen.prototype.choice_destroy = function(link) {
1105       if (this.result_deselect(link[0].getAttribute("data-option-array-index"))) {
1106         if (this.active_field) {
1107           this.search_field.focus();
1108         } else {
1109           this.show_search_field_default();
1110         }
1111         if (this.is_multiple && this.choices_count() > 0 && this.get_search_field_value().length < 1) {
1112           this.results_hide();
1113         }
1114         link.parents('li').first().remove();
1115         return this.search_field_scale();
1116       }
1117     };
1118
1119     Chosen.prototype.results_reset = function() {
1120       this.reset_single_select_options();
1121       this.form_field.options[0].selected = true;
1122       this.single_set_selected_text();
1123       this.show_search_field_default();
1124       this.results_reset_cleanup();
1125       this.trigger_form_field_change();
1126       if (this.active_field) {
1127         return this.results_hide();
1128       }
1129     };
1130
1131     Chosen.prototype.results_reset_cleanup = function() {
1132       this.current_selectedIndex = this.form_field.selectedIndex;
1133       return this.selected_item.find("abbr").remove();
1134     };
1135
1136     Chosen.prototype.result_select = function(evt) {
1137       var high, item;
1138       if (this.result_highlight) {
1139         high = this.result_highlight;
1140         this.result_clear_highlight();
1141         if (this.is_multiple && this.max_selected_options <= this.choices_count()) {
1142           this.form_field_jq.trigger("chosen:maxselected", {
1143             chosen: this
1144           });
1145           return false;
1146         }
1147         if (this.is_multiple) {
1148           high.removeClass("active-result");
1149         } else {
1150           this.reset_single_select_options();
1151         }
1152         high.addClass("result-selected");
1153         item = this.results_data[high[0].getAttribute("data-option-array-index")];
1154         item.selected = true;
1155         this.form_field.options[item.options_index].selected = true;
1156         this.selected_option_count = null;
1157         this.search_field.val("");
1158         if (this.is_multiple) {
1159           this.choice_build(item);
1160         } else {
1161           this.single_set_selected_text(this.choice_label(item));
1162         }
1163         if (this.is_multiple && (!this.hide_results_on_select || (evt.metaKey || evt.ctrlKey))) {
1164           this.winnow_results();
1165         } else {
1166           this.results_hide();
1167           this.show_search_field_default();
1168         }
1169         if (this.is_multiple || this.form_field.selectedIndex !== this.current_selectedIndex) {
1170           this.trigger_form_field_change({
1171             selected: this.form_field.options[item.options_index].value
1172           });
1173         }
1174         this.current_selectedIndex = this.form_field.selectedIndex;
1175         evt.preventDefault();
1176         return this.search_field_scale();
1177       }
1178     };
1179
1180     Chosen.prototype.single_set_selected_text = function(text) {
1181       if (text == null) {
1182         text = this.default_text;
1183       }
1184       if (text === this.default_text) {
1185         this.selected_item.addClass("chosen-default");
1186       } else {
1187         this.single_deselect_control_build();
1188         this.selected_item.removeClass("chosen-default");
1189       }
1190       return this.selected_item.find("span").html(text);
1191     };
1192
1193     Chosen.prototype.result_deselect = function(pos) {
1194       var result_data;
1195       result_data = this.results_data[pos];
1196       if (!this.form_field.options[result_data.options_index].disabled) {
1197         result_data.selected = false;
1198         this.form_field.options[result_data.options_index].selected = false;
1199         this.selected_option_count = null;
1200         this.result_clear_highlight();
1201         if (this.results_showing) {
1202           this.winnow_results();
1203         }
1204         this.trigger_form_field_change({
1205           deselected: this.form_field.options[result_data.options_index].value
1206         });
1207         this.search_field_scale();
1208         return true;
1209       } else {
1210         return false;
1211       }
1212     };
1213
1214     Chosen.prototype.single_deselect_control_build = function() {
1215       if (!this.allow_single_deselect) {
1216         return;
1217       }
1218       if (!this.selected_item.find("abbr").length) {
1219         this.selected_item.find("span").first().after("<abbr class=\"search-choice-close\"></abbr>");
1220       }
1221       return this.selected_item.addClass("chosen-single-with-deselect");
1222     };
1223
1224     Chosen.prototype.get_search_field_value = function() {
1225       return this.search_field.val();
1226     };
1227
1228     Chosen.prototype.get_search_text = function() {
1229       return $.trim(this.get_search_field_value());
1230     };
1231
1232     Chosen.prototype.escape_html = function(text) {
1233       return $('<div/>').text(text).html();
1234     };
1235
1236     Chosen.prototype.winnow_results_set_highlight = function() {
1237       var do_high, selected_results;
1238       selected_results = !this.is_multiple ? this.search_results.find(".result-selected.active-result") : [];
1239       do_high = selected_results.length ? selected_results.first() : this.search_results.find(".active-result").first();
1240       if (do_high != null) {
1241         return this.result_do_highlight(do_high);
1242       }
1243     };
1244
1245     Chosen.prototype.no_results = function(terms) {
1246       var no_results_html;
1247       no_results_html = this.get_no_results_html(terms);
1248       this.search_results.append(no_results_html);
1249       return this.form_field_jq.trigger("chosen:no_results", {
1250         chosen: this
1251       });
1252     };
1253
1254     Chosen.prototype.no_results_clear = function() {
1255       return this.search_results.find(".no-results").remove();
1256     };
1257
1258     Chosen.prototype.keydown_arrow = function() {
1259       var next_sib;
1260       if (this.results_showing && this.result_highlight) {
1261         next_sib = this.result_highlight.nextAll("li.active-result").first();
1262         if (next_sib) {
1263           return this.result_do_highlight(next_sib);
1264         }
1265       } else {
1266         return this.results_show();
1267       }
1268     };
1269
1270     Chosen.prototype.keyup_arrow = function() {
1271       var prev_sibs;
1272       if (!this.results_showing && !this.is_multiple) {
1273         return this.results_show();
1274       } else if (this.result_highlight) {
1275         prev_sibs = this.result_highlight.prevAll("li.active-result");
1276         if (prev_sibs.length) {
1277           return this.result_do_highlight(prev_sibs.first());
1278         } else {
1279           if (this.choices_count() > 0) {
1280             this.results_hide();
1281           }
1282           return this.result_clear_highlight();
1283         }
1284       }
1285     };
1286
1287     Chosen.prototype.keydown_backstroke = function() {
1288       var next_available_destroy;
1289       if (this.pending_backstroke) {
1290         this.choice_destroy(this.pending_backstroke.find("a").first());
1291         return this.clear_backstroke();
1292       } else {
1293         next_available_destroy = this.search_container.siblings("li.search-choice").last();
1294         if (next_available_destroy.length && !next_available_destroy.hasClass("search-choice-disabled")) {
1295           this.pending_backstroke = next_available_destroy;
1296           if (this.single_backstroke_delete) {
1297             return this.keydown_backstroke();
1298           } else {
1299             return this.pending_backstroke.addClass("search-choice-focus");
1300           }
1301         }
1302       }
1303     };
1304
1305     Chosen.prototype.clear_backstroke = function() {
1306       if (this.pending_backstroke) {
1307         this.pending_backstroke.removeClass("search-choice-focus");
1308       }
1309       return this.pending_backstroke = null;
1310     };
1311
1312     Chosen.prototype.search_field_scale = function() {
1313       var div, i, len, style, style_block, styles, width;
1314       if (!this.is_multiple) {
1315         return;
1316       }
1317       style_block = {
1318         position: 'absolute',
1319         left: '-1000px',
1320         top: '-1000px',
1321         display: 'none',
1322         whiteSpace: 'pre'
1323       };
1324       styles = ['fontSize', 'fontStyle', 'fontWeight', 'fontFamily', 'lineHeight', 'textTransform', 'letterSpacing'];
1325       for (i = 0, len = styles.length; i < len; i++) {
1326         style = styles[i];
1327         style_block[style] = this.search_field.css(style);
1328       }
1329       div = $('<div />').css(style_block);
1330       div.text(this.get_search_field_value());
1331       $('body').append(div);
1332       width = div.width() + 25;
1333       div.remove();
1334       if (this.container.is(':visible')) {
1335         width = Math.min(this.container.outerWidth() - 10, width);
1336       }
1337       return this.search_field.width(width);
1338     };
1339
1340     Chosen.prototype.trigger_form_field_change = function(extra) {
1341       this.form_field_jq.trigger("input", extra);
1342       return this.form_field_jq.trigger("change", extra);
1343     };
1344
1345     return Chosen;
1346
1347   })(AbstractChosen);
1348
1349 }).call(this);