git.infodrom.org Git - infodrom.org/service.infodrom.org/blob - src/jquery.autocomplete.js

   1 /**
   2 *  Ajax Autocomplete for jQuery, version 1.4.1
   3 *  (c) 2017 Tomas Kirda
   4 *
   5 *  Ajax Autocomplete for jQuery is freely distributable under the terms of an MIT-style license.
   6 *  For details, see the web site: https://github.com/devbridge/jQuery-Autocomplete
   7 */
   8
   9 /*jslint  browser: true, white: true, single: true, this: true, multivar: true */
  10 /*global define, window, document, jQuery, exports, require */
  11
  12 // Expose plugin as an AMD module if AMD loader is present:
  13 (function (factory) {
  14     "use strict";
  15     if (typeof define === 'function' && define.amd) {
  16         // AMD. Register as an anonymous module.
  17         define(['jquery'], factory);
  18     } else if (typeof exports === 'object' && typeof require === 'function') {
  19         // Browserify
  20         factory(require('jquery'));
  21     } else {
  22         // Browser globals
  23         factory(jQuery);
  24     }
  25 }(function ($) {
  26     'use strict';
  27
  28     var
  29         utils = (function () {
  30             return {
  31                 escapeRegExChars: function (value) {
  32                     return value.replace(/[|\\{}()[\]^$+*?.]/g, "\\$&");
  33                 },
  34                 createNode: function (containerClass) {
  35                     var div = document.createElement('div');
  36                     div.className = containerClass;
  37                     div.style.position = 'absolute';
  38                     div.style.display = 'none';
  39                     return div;
  40                 }
  41             };
  42         }()),
  43
  44         keys = {
  45             ESC: 27,
  46             TAB: 9,
  47             RETURN: 13,
  48             LEFT: 37,
  49             UP: 38,
  50             RIGHT: 39,
  51             DOWN: 40
  52         },
  53
  54         noop = $.noop;
  55
  56     function Autocomplete(el, options) {
  57         var that = this;
  58
  59         // Shared variables:
  60         that.element = el;
  61         that.el = $(el);
  62         that.suggestions = [];
  63         that.badQueries = [];
  64         that.selectedIndex = -1;
  65         that.currentValue = that.element.value;
  66         that.timeoutId = null;
  67         that.cachedResponse = {};
  68         that.onChangeTimeout = null;
  69         that.onChange = null;
  70         that.isLocal = false;
  71         that.suggestionsContainer = null;
  72         that.noSuggestionsContainer = null;
  73         that.options = $.extend({}, Autocomplete.defaults, options);
  74         that.classes = {
  75             selected: 'autocomplete-selected',
  76             suggestion: 'autocomplete-suggestion'
  77         };
  78         that.hint = null;
  79         that.hintValue = '';
  80         that.selection = null;
  81
  82         // Initialize and set options:
  83         that.initialize();
  84         that.setOptions(options);
  85     }
  86
  87     Autocomplete.utils = utils;
  88
  89     $.Autocomplete = Autocomplete;
  90
  91     Autocomplete.defaults = {
  92             ajaxSettings: {},
  93             autoSelectFirst: false,
  94             appendTo: 'body',
  95             serviceUrl: null,
  96             lookup: null,
  97             onSelect: null,
  98             width: 'auto',
  99             minChars: 1,
 100             maxHeight: 300,
 101             deferRequestBy: 0,
 102             params: {},
 103             formatResult: _formatResult,
 104             formatGroup: _formatGroup,
 105             delimiter: null,
 106             zIndex: 9999,
 107             type: 'GET',
 108             noCache: false,
 109             onSearchStart: noop,
 110             onSearchComplete: noop,
 111             onSearchError: noop,
 112             preserveInput: false,
 113             containerClass: 'autocomplete-suggestions',
 114             tabDisabled: false,
 115             dataType: 'text',
 116             currentRequest: null,
 117             triggerSelectOnValidInput: true,
 118             preventBadQueries: true,
 119             lookupFilter: _lookupFilter,
 120             paramName: 'query',
 121             transformResult: _transformResult,
 122             showNoSuggestionNotice: false,
 123             noSuggestionNotice: 'No results',
 124             orientation: 'bottom',
 125             forceFixPosition: false
 126     };
 127
 128     function _lookupFilter(suggestion, originalQuery, queryLowerCase) {
 129         return suggestion.value.toLowerCase().indexOf(queryLowerCase) !== -1;
 130     };
 131
 132     function _transformResult(response) {
 133         return typeof response === 'string' ? $.parseJSON(response) : response;
 134     };
 135
 136     function _formatResult(suggestion, currentValue) {
 137         // Do not replace anything if the current value is empty
 138         if (!currentValue) {
 139             return suggestion.value;
 140         }
 141
 142         var pattern = '(' + utils.escapeRegExChars(currentValue) + ')';
 143
 144         return suggestion.value
 145             .replace(new RegExp(pattern, 'gi'), '<strong>$1<\/strong>')
 146             .replace(/&/g, '&amp;')
 147             .replace(/</g, '&lt;')
 148             .replace(/>/g, '&gt;')
 149             .replace(/"/g, '&quot;')
 150             .replace(/&lt;(\/?strong)&gt;/g, '<$1>');
 151     };
 152
 153     function _formatGroup(suggestion, category) {
 154         return '<div class="autocomplete-group">' + category + '</div>';
 155     };
 156
 157     Autocomplete.prototype = {
 158
 159         initialize: function () {
 160             var that = this,
 161                 suggestionSelector = '.' + that.classes.suggestion,
 162                 selected = that.classes.selected,
 163                 options = that.options,
 164                 container;
 165
 166             // Remove autocomplete attribute to prevent native suggestions:
 167             that.element.setAttribute('autocomplete', 'off');
 168
 169             // html() deals with many types: htmlString or Element or Array or jQuery
 170             that.noSuggestionsContainer = $('<div class="autocomplete-no-suggestion"></div>')
 171                                           .html(this.options.noSuggestionNotice).get(0);
 172
 173             that.suggestionsContainer = Autocomplete.utils.createNode(options.containerClass);
 174
 175             container = $(that.suggestionsContainer);
 176
 177             container.appendTo(options.appendTo || 'body');
 178
 179             // Only set width if it was provided:
 180             if (options.width !== 'auto') {
 181                 container.css('width', options.width);
 182             }
 183
 184             // Listen for mouse over event on suggestions list:
 185             container.on('mouseover.autocomplete', suggestionSelector, function () {
 186                 that.activate($(this).data('index'));
 187             });
 188
 189             // Deselect active element when mouse leaves suggestions container:
 190             container.on('mouseout.autocomplete', function () {
 191                 that.selectedIndex = -1;
 192                 container.children('.' + selected).removeClass(selected);
 193             });
 194
 195
 196             // Listen for click event on suggestions list:
 197             container.on('click.autocomplete', suggestionSelector, function () {
 198                 that.select($(this).data('index'));
 199             });
 200
 201             container.on('click.autocomplete', function () {
 202                 clearTimeout(that.blurTimeoutId);
 203             })
 204
 205             that.fixPositionCapture = function () {
 206                 if (that.visible) {
 207                     that.fixPosition();
 208                 }
 209             };
 210
 211             $(window).on('resize.autocomplete', that.fixPositionCapture);
 212
 213             that.el.on('keydown.autocomplete', function (e) { that.onKeyPress(e); });
 214             that.el.on('keyup.autocomplete', function (e) { that.onKeyUp(e); });
 215             that.el.on('blur.autocomplete', function () { that.onBlur(); });
 216             that.el.on('focus.autocomplete', function () { that.onFocus(); });
 217             that.el.on('change.autocomplete', function (e) { that.onKeyUp(e); });
 218             that.el.on('input.autocomplete', function (e) { that.onKeyUp(e); });
 219         },
 220
 221         onFocus: function () {
 222             var that = this;
 223
 224             that.fixPosition();
 225
 226             if (that.el.val().length >= that.options.minChars) {
 227                 that.onValueChange();
 228             }
 229         },
 230
 231         onBlur: function () {
 232             var that = this;
 233
 234             // If user clicked on a suggestion, hide() will
 235             // be canceled, otherwise close suggestions
 236             that.blurTimeoutId = setTimeout(function () {
 237                 that.hide();
 238             }, 200);
 239         },
 240
 241         abortAjax: function () {
 242             var that = this;
 243             if (that.currentRequest) {
 244                 that.currentRequest.abort();
 245                 that.currentRequest = null;
 246             }
 247         },
 248
 249         setOptions: function (suppliedOptions) {
 250             var that = this,
 251                 options = that.options;
 252
 253             this.options = $.extend({}, options, suppliedOptions);
 254
 255             that.isLocal = $.isArray(options.lookup);
 256
 257             if (that.isLocal) {
 258                 options.lookup = that.verifySuggestionsFormat(options.lookup);
 259             }
 260
 261             options.orientation = that.validateOrientation(options.orientation, 'bottom');
 262
 263             // Adjust height, width and z-index:
 264             $(that.suggestionsContainer).css({
 265                 'max-height': options.maxHeight + 'px',
 266                 'width': options.width + 'px',
 267                 'z-index': options.zIndex
 268             });
 269         },
 270
 271
 272         clearCache: function () {
 273             this.cachedResponse = {};
 274             this.badQueries = [];
 275         },
 276
 277         clear: function () {
 278             this.clearCache();
 279             this.currentValue = '';
 280             this.suggestions = [];
 281         },
 282
 283         disable: function () {
 284             var that = this;
 285             that.disabled = true;
 286             clearTimeout(that.onChangeTimeout);
 287             that.abortAjax();
 288         },
 289
 290         enable: function () {
 291             this.disabled = false;
 292         },
 293
 294         fixPosition: function () {
 295             // Use only when container has already its content
 296
 297             var that = this,
 298                 $container = $(that.suggestionsContainer),
 299                 containerParent = $container.parent().get(0);
 300             // Fix position automatically when appended to body.
 301             // In other cases force parameter must be given.
 302             if (containerParent !== document.body && !that.options.forceFixPosition) {
 303                 return;
 304             }
 305
 306             // Choose orientation
 307             var orientation = that.options.orientation,
 308                 containerHeight = $container.outerHeight(),
 309                 height = that.el.outerHeight(),
 310                 offset = that.el.offset(),
 311                 styles = { 'top': offset.top, 'left': offset.left };
 312
 313             if (orientation === 'auto') {
 314                 var viewPortHeight = $(window).height(),
 315                     scrollTop = $(window).scrollTop(),
 316                     topOverflow = -scrollTop + offset.top - containerHeight,
 317                     bottomOverflow = scrollTop + viewPortHeight - (offset.top + height + containerHeight);
 318
 319                 orientation = (Math.max(topOverflow, bottomOverflow) === topOverflow) ? 'top' : 'bottom';
 320             }
 321
 322             if (orientation === 'top') {
 323                 styles.top += -containerHeight;
 324             } else {
 325                 styles.top += height;
 326             }
 327
 328             // If container is not positioned to body,
 329             // correct its position using offset parent offset
 330             if(containerParent !== document.body) {
 331                 var opacity = $container.css('opacity'),
 332                     parentOffsetDiff;
 333
 334                     if (!that.visible){
 335                         $container.css('opacity', 0).show();
 336                     }
 337
 338                 parentOffsetDiff = $container.offsetParent().offset();
 339                 styles.top -= parentOffsetDiff.top;
 340                 styles.left -= parentOffsetDiff.left;
 341
 342                 if (!that.visible){
 343                     $container.css('opacity', opacity).hide();
 344                 }
 345             }
 346
 347             if (that.options.width === 'auto') {
 348                 styles.width = that.el.outerWidth() + 'px';
 349             }
 350
 351             $container.css(styles);
 352         },
 353
 354         isCursorAtEnd: function () {
 355             var that = this,
 356                 valLength = that.el.val().length,
 357                 selectionStart = that.element.selectionStart,
 358                 range;
 359
 360             if (typeof selectionStart === 'number') {
 361                 return selectionStart === valLength;
 362             }
 363             if (document.selection) {
 364                 range = document.selection.createRange();
 365                 range.moveStart('character', -valLength);
 366                 return valLength === range.text.length;
 367             }
 368             return true;
 369         },
 370
 371         onKeyPress: function (e) {
 372             var that = this;
 373
 374             // If suggestions are hidden and user presses arrow down, display suggestions:
 375             if (!that.disabled && !that.visible && e.which === keys.DOWN && that.currentValue) {
 376                 that.suggest();
 377                 return;
 378             }
 379
 380             if (that.disabled || !that.visible) {
 381                 return;
 382             }
 383
 384             switch (e.which) {
 385                 case keys.ESC:
 386                     that.el.val(that.currentValue);
 387                     that.hide();
 388                     break;
 389                 case keys.RIGHT:
 390                     if (that.hint && that.options.onHint && that.isCursorAtEnd()) {
 391                         that.selectHint();
 392                         break;
 393                     }
 394                     return;
 395                 case keys.TAB:
 396                     if (that.hint && that.options.onHint) {
 397                         that.selectHint();
 398                         return;
 399                     }
 400                     if (that.selectedIndex === -1) {
 401                         that.hide();
 402                         return;
 403                     }
 404                     that.select(that.selectedIndex);
 405                     if (that.options.tabDisabled === false) {
 406                         return;
 407                     }
 408                     break;
 409                 case keys.RETURN:
 410                     if (that.selectedIndex === -1) {
 411                         that.hide();
 412                         return;
 413                     }
 414                     that.select(that.selectedIndex);
 415                     break;
 416                 case keys.UP:
 417                     that.moveUp();
 418                     break;
 419                 case keys.DOWN:
 420                     that.moveDown();
 421                     break;
 422                 default:
 423                     return;
 424             }
 425
 426             // Cancel event if function did not return:
 427             e.stopImmediatePropagation();
 428             e.preventDefault();
 429         },
 430
 431         onKeyUp: function (e) {
 432             var that = this;
 433
 434             if (that.disabled) {
 435                 return;
 436             }
 437
 438             switch (e.which) {
 439                 case keys.UP:
 440                 case keys.DOWN:
 441                     return;
 442             }
 443
 444             clearTimeout(that.onChangeTimeout);
 445
 446             if (that.currentValue !== that.el.val()) {
 447                 that.findBestHint();
 448                 if (that.options.deferRequestBy > 0) {
 449                     // Defer lookup in case when value changes very quickly:
 450                     that.onChangeTimeout = setTimeout(function () {
 451                         that.onValueChange();
 452                     }, that.options.deferRequestBy);
 453                 } else {
 454                     that.onValueChange();
 455                 }
 456             }
 457         },
 458
 459         onValueChange: function () {
 460             var that = this,
 461                 options = that.options,
 462                 value = that.el.val(),
 463                 query = that.getQuery(value);
 464
 465             if (that.selection && that.currentValue !== query) {
 466                 that.selection = null;
 467                 (options.onInvalidateSelection || $.noop).call(that.element);
 468             }
 469
 470             clearTimeout(that.onChangeTimeout);
 471             that.currentValue = value;
 472             that.selectedIndex = -1;
 473
 474             // Check existing suggestion for the match before proceeding:
 475             if (options.triggerSelectOnValidInput && that.isExactMatch(query)) {
 476                 that.select(0);
 477                 return;
 478             }
 479
 480             if (query.length < options.minChars) {
 481                 that.hide();
 482             } else {
 483                 that.getSuggestions(query);
 484             }
 485         },
 486
 487         isExactMatch: function (query) {
 488             var suggestions = this.suggestions;
 489
 490             return (suggestions.length === 1 && suggestions[0].value.toLowerCase() === query.toLowerCase());
 491         },
 492
 493         getQuery: function (value) {
 494             var delimiter = this.options.delimiter,
 495                 parts;
 496
 497             if (!delimiter) {
 498                 return value;
 499             }
 500             parts = value.split(delimiter);
 501             return $.trim(parts[parts.length - 1]);
 502         },
 503
 504         getSuggestionsLocal: function (query) {
 505             var that = this,
 506                 options = that.options,
 507                 queryLowerCase = query.toLowerCase(),
 508                 filter = options.lookupFilter,
 509                 limit = parseInt(options.lookupLimit, 10),
 510                 data;
 511
 512             data = {
 513                 suggestions: $.grep(options.lookup, function (suggestion) {
 514                     return filter(suggestion, query, queryLowerCase);
 515                 })
 516             };
 517
 518             if (limit && data.suggestions.length > limit) {
 519                 data.suggestions = data.suggestions.slice(0, limit);
 520             }
 521
 522             return data;
 523         },
 524
 525         getSuggestions: function (q) {
 526             var response,
 527                 that = this,
 528                 options = that.options,
 529                 serviceUrl = options.serviceUrl,
 530                 params,
 531                 cacheKey,
 532                 ajaxSettings;
 533
 534             options.params[options.paramName] = q;
 535
 536             if (options.onSearchStart.call(that.element, options.params) === false) {
 537                 return;
 538             }
 539
 540             params = options.ignoreParams ? null : options.params;
 541
 542             if ($.isFunction(options.lookup)){
 543                 options.lookup(q, function (data) {
 544                     that.suggestions = data.suggestions;
 545                     that.suggest();
 546                     options.onSearchComplete.call(that.element, q, data.suggestions);
 547                 });
 548                 return;
 549             }
 550
 551             if (that.isLocal) {
 552                 response = that.getSuggestionsLocal(q);
 553             } else {
 554                 if ($.isFunction(serviceUrl)) {
 555                     serviceUrl = serviceUrl.call(that.element, q);
 556                 }
 557                 cacheKey = serviceUrl + '?' + $.param(params || {});
 558                 response = that.cachedResponse[cacheKey];
 559             }
 560
 561             if (response && $.isArray(response.suggestions)) {
 562                 that.suggestions = response.suggestions;
 563                 that.suggest();
 564                 options.onSearchComplete.call(that.element, q, response.suggestions);
 565             } else if (!that.isBadQuery(q)) {
 566                 that.abortAjax();
 567
 568                 ajaxSettings = {
 569                     url: serviceUrl,
 570                     data: params,
 571                     type: options.type,
 572                     dataType: options.dataType
 573                 };
 574
 575                 $.extend(ajaxSettings, options.ajaxSettings);
 576
 577                 that.currentRequest = $.ajax(ajaxSettings).done(function (data) {
 578                     var result;
 579                     that.currentRequest = null;
 580                     result = options.transformResult(data, q);
 581                     that.processResponse(result, q, cacheKey);
 582                     options.onSearchComplete.call(that.element, q, result.suggestions);
 583                 }).fail(function (jqXHR, textStatus, errorThrown) {
 584                     options.onSearchError.call(that.element, q, jqXHR, textStatus, errorThrown);
 585                 });
 586             } else {
 587                 options.onSearchComplete.call(that.element, q, []);
 588             }
 589         },
 590
 591         isBadQuery: function (q) {
 592             if (!this.options.preventBadQueries){
 593                 return false;
 594             }
 595
 596             var badQueries = this.badQueries,
 597                 i = badQueries.length;
 598
 599             while (i--) {
 600                 if (q.indexOf(badQueries[i]) === 0) {
 601                     return true;
 602                 }
 603             }
 604
 605             return false;
 606         },
 607
 608         hide: function () {
 609             var that = this,
 610                 container = $(that.suggestionsContainer);
 611
 612             if ($.isFunction(that.options.onHide) && that.visible) {
 613                 that.options.onHide.call(that.element, container);
 614             }
 615
 616             that.visible = false;
 617             that.selectedIndex = -1;
 618             clearTimeout(that.onChangeTimeout);
 619             $(that.suggestionsContainer).hide();
 620             that.signalHint(null);
 621         },
 622
 623         suggest: function () {
 624             if (!this.suggestions.length) {
 625                 if (this.options.showNoSuggestionNotice) {
 626                     this.noSuggestions();
 627                 } else {
 628                     this.hide();
 629                 }
 630                 return;
 631             }
 632
 633             var that = this,
 634                 options = that.options,
 635                 groupBy = options.groupBy,
 636                 formatResult = options.formatResult,
 637                 value = that.getQuery(that.currentValue),
 638                 className = that.classes.suggestion,
 639                 classSelected = that.classes.selected,
 640                 container = $(that.suggestionsContainer),
 641                 noSuggestionsContainer = $(that.noSuggestionsContainer),
 642                 beforeRender = options.beforeRender,
 643                 html = '',
 644                 category,
 645                 formatGroup = function (suggestion, index) {
 646                         var currentCategory = suggestion.data[groupBy];
 647
 648                         if (category === currentCategory){
 649                             return '';
 650                         }
 651
 652                         category = currentCategory;
 653
 654                         return options.formatGroup(suggestion, category);
 655                     };
 656
 657             if (options.triggerSelectOnValidInput && that.isExactMatch(value)) {
 658                 that.select(0);
 659                 return;
 660             }
 661
 662             // Build suggestions inner HTML:
 663             $.each(that.suggestions, function (i, suggestion) {
 664                 if (groupBy){
 665                     html += formatGroup(suggestion, value, i);
 666                 }
 667
 668                 html += '<div class="' + className + '" data-index="' + i + '">' + formatResult(suggestion, value, i) + '</div>';
 669             });
 670
 671             this.adjustContainerWidth();
 672
 673             noSuggestionsContainer.detach();
 674             container.html(html);
 675
 676             if ($.isFunction(beforeRender)) {
 677                 beforeRender.call(that.element, container, that.suggestions);
 678             }
 679
 680             that.fixPosition();
 681             container.show();
 682
 683             // Select first value by default:
 684             if (options.autoSelectFirst) {
 685                 that.selectedIndex = 0;
 686                 container.scrollTop(0);
 687                 container.children('.' + className).first().addClass(classSelected);
 688             }
 689
 690             that.visible = true;
 691             that.findBestHint();
 692         },
 693
 694         noSuggestions: function() {
 695              var that = this,
 696                  beforeRender = that.options.beforeRender,
 697                  container = $(that.suggestionsContainer),
 698                  noSuggestionsContainer = $(that.noSuggestionsContainer);
 699
 700             this.adjustContainerWidth();
 701
 702             // Some explicit steps. Be careful here as it easy to get
 703             // noSuggestionsContainer removed from DOM if not detached properly.
 704             noSuggestionsContainer.detach();
 705
 706             // clean suggestions if any
 707             container.empty();
 708             container.append(noSuggestionsContainer);
 709
 710             if ($.isFunction(beforeRender)) {
 711                 beforeRender.call(that.element, container, that.suggestions);
 712             }
 713
 714             that.fixPosition();
 715
 716             container.show();
 717             that.visible = true;
 718         },
 719
 720         adjustContainerWidth: function() {
 721             var that = this,
 722                 options = that.options,
 723                 width,
 724                 container = $(that.suggestionsContainer);
 725
 726             // If width is auto, adjust width before displaying suggestions,
 727             // because if instance was created before input had width, it will be zero.
 728             // Also it adjusts if input width has changed.
 729             if (options.width === 'auto') {
 730                 width = that.el.outerWidth();
 731                 container.css('width', width > 0 ? width : 300);
 732             } else if(options.width === 'flex') {
 733                 // Trust the source! Unset the width property so it will be the max length
 734                 // the containing elements.
 735                 container.css('width', '');
 736             }
 737         },
 738
 739         findBestHint: function () {
 740             var that = this,
 741                 value = that.el.val().toLowerCase(),
 742                 bestMatch = null;
 743
 744             if (!value) {
 745                 return;
 746             }
 747
 748             $.each(that.suggestions, function (i, suggestion) {
 749                 var foundMatch = suggestion.value.toLowerCase().indexOf(value) === 0;
 750                 if (foundMatch) {
 751                     bestMatch = suggestion;
 752                 }
 753                 return !foundMatch;
 754             });
 755
 756             that.signalHint(bestMatch);
 757         },
 758
 759         signalHint: function (suggestion) {
 760             var hintValue = '',
 761                 that = this;
 762             if (suggestion) {
 763                 hintValue = that.currentValue + suggestion.value.substr(that.currentValue.length);
 764             }
 765             if (that.hintValue !== hintValue) {
 766                 that.hintValue = hintValue;
 767                 that.hint = suggestion;
 768                 (this.options.onHint || $.noop)(hintValue);
 769             }
 770         },
 771
 772         verifySuggestionsFormat: function (suggestions) {
 773             // If suggestions is string array, convert them to supported format:
 774             if (suggestions.length && typeof suggestions[0] === 'string') {
 775                 return $.map(suggestions, function (value) {
 776                     return { value: value, data: null };
 777                 });
 778             }
 779
 780             return suggestions;
 781         },
 782
 783         validateOrientation: function(orientation, fallback) {
 784             orientation = $.trim(orientation || '').toLowerCase();
 785
 786             if($.inArray(orientation, ['auto', 'bottom', 'top']) === -1){
 787                 orientation = fallback;
 788             }
 789
 790             return orientation;
 791         },
 792
 793         processResponse: function (result, originalQuery, cacheKey) {
 794             var that = this,
 795                 options = that.options;
 796
 797             result.suggestions = that.verifySuggestionsFormat(result.suggestions);
 798
 799             // Cache results if cache is not disabled:
 800             if (!options.noCache) {
 801                 that.cachedResponse[cacheKey] = result;
 802                 if (options.preventBadQueries && !result.suggestions.length) {
 803                     that.badQueries.push(originalQuery);
 804                 }
 805             }
 806
 807             // Return if originalQuery is not matching current query:
 808             if (originalQuery !== that.getQuery(that.currentValue)) {
 809                 return;
 810             }
 811
 812             that.suggestions = result.suggestions;
 813             that.suggest();
 814         },
 815
 816         activate: function (index) {
 817             var that = this,
 818                 activeItem,
 819                 selected = that.classes.selected,
 820                 container = $(that.suggestionsContainer),
 821                 children = container.find('.' + that.classes.suggestion);
 822
 823             container.find('.' + selected).removeClass(selected);
 824
 825             that.selectedIndex = index;
 826
 827             if (that.selectedIndex !== -1 && children.length > that.selectedIndex) {
 828                 activeItem = children.get(that.selectedIndex);
 829                 $(activeItem).addClass(selected);
 830                 return activeItem;
 831             }
 832
 833             return null;
 834         },
 835
 836         selectHint: function () {
 837             var that = this,
 838                 i = $.inArray(that.hint, that.suggestions);
 839
 840             that.select(i);
 841         },
 842
 843         select: function (i) {
 844             var that = this;
 845             that.hide();
 846             that.onSelect(i);
 847         },
 848
 849         moveUp: function () {
 850             var that = this;
 851
 852             if (that.selectedIndex === -1) {
 853                 return;
 854             }
 855
 856             if (that.selectedIndex === 0) {
 857                 $(that.suggestionsContainer).children().first().removeClass(that.classes.selected);
 858                 that.selectedIndex = -1;
 859                 that.el.val(that.currentValue);
 860                 that.findBestHint();
 861                 return;
 862             }
 863
 864             that.adjustScroll(that.selectedIndex - 1);
 865         },
 866
 867         moveDown: function () {
 868             var that = this;
 869
 870             if (that.selectedIndex === (that.suggestions.length - 1)) {
 871                 return;
 872             }
 873
 874             that.adjustScroll(that.selectedIndex + 1);
 875         },
 876
 877         adjustScroll: function (index) {
 878             var that = this,
 879                 activeItem = that.activate(index);
 880
 881             if (!activeItem) {
 882                 return;
 883             }
 884
 885             var offsetTop,
 886                 upperBound,
 887                 lowerBound,
 888                 heightDelta = $(activeItem).outerHeight();
 889
 890             offsetTop = activeItem.offsetTop;
 891             upperBound = $(that.suggestionsContainer).scrollTop();
 892             lowerBound = upperBound + that.options.maxHeight - heightDelta;
 893
 894             if (offsetTop < upperBound) {
 895                 $(that.suggestionsContainer).scrollTop(offsetTop);
 896             } else if (offsetTop > lowerBound) {
 897                 $(that.suggestionsContainer).scrollTop(offsetTop - that.options.maxHeight + heightDelta);
 898             }
 899
 900             if (!that.options.preserveInput) {
 901                 that.el.val(that.getValue(that.suggestions[index].value));
 902             }
 903             that.signalHint(null);
 904         },
 905
 906         onSelect: function (index) {
 907             var that = this,
 908                 onSelectCallback = that.options.onSelect,
 909                 suggestion = that.suggestions[index];
 910
 911             that.currentValue = that.getValue(suggestion.value);
 912
 913             if (that.currentValue !== that.el.val() && !that.options.preserveInput) {
 914                 that.el.val(that.currentValue);
 915             }
 916
 917             that.signalHint(null);
 918             that.suggestions = [];
 919             that.selection = suggestion;
 920
 921             if ($.isFunction(onSelectCallback)) {
 922                 onSelectCallback.call(that.element, suggestion);
 923             }
 924         },
 925
 926         getValue: function (value) {
 927             var that = this,
 928                 delimiter = that.options.delimiter,
 929                 currentValue,
 930                 parts;
 931
 932             if (!delimiter) {
 933                 return value;
 934             }
 935
 936             currentValue = that.currentValue;
 937             parts = currentValue.split(delimiter);
 938
 939             if (parts.length === 1) {
 940                 return value;
 941             }
 942
 943             return currentValue.substr(0, currentValue.length - parts[parts.length - 1].length) + value;
 944         },
 945
 946         dispose: function () {
 947             var that = this;
 948             that.el.off('.autocomplete').removeData('autocomplete');
 949             $(window).off('resize.autocomplete', that.fixPositionCapture);
 950             $(that.suggestionsContainer).remove();
 951         }
 952     };
 953
 954     // Create chainable jQuery plugin:
 955     $.fn.devbridgeAutocomplete = function (options, args) {
 956         var dataKey = 'autocomplete';
 957         // If function invoked without argument return
 958         // instance of the first matched element:
 959         if (!arguments.length) {
 960             return this.first().data(dataKey);
 961         }
 962
 963         return this.each(function () {
 964             var inputElement = $(this),
 965                 instance = inputElement.data(dataKey);
 966
 967             if (typeof options === 'string') {
 968                 if (instance && typeof instance[options] === 'function') {
 969                     instance[options](args);
 970                 }
 971             } else {
 972                 // If instance already exists, destroy it:
 973                 if (instance && instance.dispose) {
 974                     instance.dispose();
 975                 }
 976                 instance = new Autocomplete(this, options);
 977                 inputElement.data(dataKey, instance);
 978             }
 979         });
 980     };
 981
 982     // Don't overwrite if it already exists
 983     if (!$.fn.autocomplete) {
 984         $.fn.autocomplete = $.fn.devbridgeAutocomplete;
 985     }
 986 }));