select2.js 142 KB

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  1. /*
  2. Copyright 2012 Igor Vaynberg
  3. Version: @@ver@@ Timestamp: @@timestamp@@
  4. This software is licensed under the Apache License, Version 2.0 (the "Apache License") or the GNU
  5. General Public License version 2 (the "GPL License"). You may choose either license to govern your
  6. use of this software only upon the condition that you accept all of the terms of either the Apache
  7. License or the GPL License.
  8. You may obtain a copy of the Apache License and the GPL License at:
  9. http://www.apache.org/licenses/LICENSE-2.0
  10. http://www.gnu.org/licenses/gpl-2.0.html
  11. Unless required by applicable law or agreed to in writing, software distributed under the
  12. Apache License or the GPL License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
  13. CONDITIONS OF ANY KIND, either express or implied. See the Apache License and the GPL License for
  14. the specific language governing permissions and limitations under the Apache License and the GPL License.
  15. */
  16. (function ($) {
  17. if(typeof $.fn.each2 == "undefined") {
  18. $.extend($.fn, {
  19. /*
  20. * 4-10 times faster .each replacement
  21. * use it carefully, as it overrides jQuery context of element on each iteration
  22. */
  23. each2 : function (c) {
  24. var j = $([0]), i = -1, l = this.length;
  25. while (
  26. ++i < l
  27. && (j.context = j[0] = this[i])
  28. && c.call(j[0], i, j) !== false //"this"=DOM, i=index, j=jQuery object
  29. );
  30. return this;
  31. }
  32. });
  33. }
  34. })(jQuery);
  35. (function ($, undefined) {
  36. "use strict";
  37. /*global document, window, jQuery, console */
  38. if (window.Select2 !== undefined) {
  39. return;
  40. }
  41. var KEY, AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer,
  42. lastMousePosition={x:0,y:0}, $document, scrollBarDimensions,
  43. KEY = {
  44. TAB: 9,
  45. ENTER: 13,
  46. ESC: 27,
  47. SPACE: 32,
  48. LEFT: 37,
  49. UP: 38,
  50. RIGHT: 39,
  51. DOWN: 40,
  52. SHIFT: 16,
  53. CTRL: 17,
  54. ALT: 18,
  55. PAGE_UP: 33,
  56. PAGE_DOWN: 34,
  57. HOME: 36,
  58. END: 35,
  59. BACKSPACE: 8,
  60. DELETE: 46,
  61. isArrow: function (k) {
  62. k = k.which ? k.which : k;
  63. switch (k) {
  64. case KEY.LEFT:
  65. case KEY.RIGHT:
  66. case KEY.UP:
  67. case KEY.DOWN:
  68. return true;
  69. }
  70. return false;
  71. },
  72. isControl: function (e) {
  73. var k = e.which;
  74. switch (k) {
  75. case KEY.SHIFT:
  76. case KEY.CTRL:
  77. case KEY.ALT:
  78. return true;
  79. }
  80. if (e.metaKey) return true;
  81. return false;
  82. },
  83. isFunctionKey: function (k) {
  84. k = k.which ? k.which : k;
  85. return k >= 112 && k <= 123;
  86. }
  87. },
  88. MEASURE_SCROLLBAR_TEMPLATE = "<div class='select2-measure-scrollbar'></div>",
  89. DIACRITICS = 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  90. $document = $(document);
  91. nextUid=(function() { var counter=1; return function() { return counter++; }; }());
  92. function reinsertElement(element) {
  93. var placeholder = $(document.createTextNode(''));
  94. element.before(placeholder);
  95. placeholder.before(element);
  96. placeholder.remove();
  97. }
  98. function stripDiacritics(str) {
  99. // Used 'uni range + named function' from http://jsperf.com/diacritics/18
  100. function match(a) {
  101. return DIACRITICS[a] || a;
  102. }
  103. return str.replace(/[^\u0000-\u007E]/g, match);
  104. }
  105. function indexOf(value, array) {
  106. var i = 0, l = array.length;
  107. for (; i < l; i = i + 1) {
  108. if (equal(value, array[i])) return i;
  109. }
  110. return -1;
  111. }
  112. function measureScrollbar () {
  113. var $template = $( MEASURE_SCROLLBAR_TEMPLATE );
  114. $template.appendTo('body');
  115. var dim = {
  116. width: $template.width() - $template[0].clientWidth,
  117. height: $template.height() - $template[0].clientHeight
  118. };
  119. $template.remove();
  120. return dim;
  121. }
  122. /**
  123. * Compares equality of a and b
  124. * @param a
  125. * @param b
  126. */
  127. function equal(a, b) {
  128. if (a === b) return true;
  129. if (a === undefined || b === undefined) return false;
  130. if (a === null || b === null) return false;
  131. // Check whether 'a' or 'b' is a string (primitive or object).
  132. // The concatenation of an empty string (+'') converts its argument to a string's primitive.
  133. if (a.constructor === String) return a+'' === b+''; // a+'' - in case 'a' is a String object
  134. if (b.constructor === String) return b+'' === a+''; // b+'' - in case 'b' is a String object
  135. return false;
  136. }
  137. /**
  138. * Splits the string into an array of values, trimming each value. An empty array is returned for nulls or empty
  139. * strings
  140. * @param string
  141. * @param separator
  142. */
  143. function splitVal(string, separator) {
  144. var val, i, l;
  145. if (string === null || string.length < 1) return [];
  146. val = string.split(separator);
  147. for (i = 0, l = val.length; i < l; i = i + 1) val[i] = $.trim(val[i]);
  148. return val;
  149. }
  150. function getSideBorderPadding(element) {
  151. return element.outerWidth(false) - element.width();
  152. }
  153. function installKeyUpChangeEvent(element) {
  154. var key="keyup-change-value";
  155. element.on("keydown", function () {
  156. if ($.data(element, key) === undefined) {
  157. $.data(element, key, element.val());
  158. }
  159. });
  160. element.on("keyup", function () {
  161. var val= $.data(element, key);
  162. if (val !== undefined && element.val() !== val) {
  163. $.removeData(element, key);
  164. element.trigger("keyup-change");
  165. }
  166. });
  167. }
  168. $document.on("mousemove", function (e) {
  169. lastMousePosition.x = e.pageX;
  170. lastMousePosition.y = e.pageY;
  171. });
  172. /**
  173. * filters mouse events so an event is fired only if the mouse moved.
  174. *
  175. * filters out mouse events that occur when mouse is stationary but
  176. * the elements under the pointer are scrolled.
  177. */
  178. function installFilteredMouseMove(element) {
  179. element.on("mousemove", function (e) {
  180. var lastpos = lastMousePosition;
  181. if (lastpos === undefined || lastpos.x !== e.pageX || lastpos.y !== e.pageY) {
  182. $(e.target).trigger("mousemove-filtered", e);
  183. }
  184. });
  185. }
  186. /**
  187. * Debounces a function. Returns a function that calls the original fn function only if no invocations have been made
  188. * within the last quietMillis milliseconds.
  189. *
  190. * @param quietMillis number of milliseconds to wait before invoking fn
  191. * @param fn function to be debounced
  192. * @param ctx object to be used as this reference within fn
  193. * @return debounced version of fn
  194. */
  195. function debounce(quietMillis, fn, ctx) {
  196. ctx = ctx || undefined;
  197. var timeout;
  198. return function () {
  199. var args = arguments;
  200. window.clearTimeout(timeout);
  201. timeout = window.setTimeout(function() {
  202. fn.apply(ctx, args);
  203. }, quietMillis);
  204. };
  205. }
  206. function installDebouncedScroll(threshold, element) {
  207. var notify = debounce(threshold, function (e) { element.trigger("scroll-debounced", e);});
  208. element.on("scroll", function (e) {
  209. if (indexOf(e.target, element.get()) >= 0) notify(e);
  210. });
  211. }
  212. function focus($el) {
  213. if ($el[0] === document.activeElement) return;
  214. /* set the focus in a 0 timeout - that way the focus is set after the processing
  215. of the current event has finished - which seems like the only reliable way
  216. to set focus */
  217. window.setTimeout(function() {
  218. var el=$el[0], pos=$el.val().length, range;
  219. $el.focus();
  220. /* make sure el received focus so we do not error out when trying to manipulate the caret.
  221. sometimes modals or others listeners may steal it after its set */
  222. var isVisible = (el.offsetWidth > 0 || el.offsetHeight > 0);
  223. if (isVisible && el === document.activeElement) {
  224. /* after the focus is set move the caret to the end, necessary when we val()
  225. just before setting focus */
  226. if(el.setSelectionRange)
  227. {
  228. el.setSelectionRange(pos, pos);
  229. }
  230. else if (el.createTextRange) {
  231. range = el.createTextRange();
  232. range.collapse(false);
  233. range.select();
  234. }
  235. }
  236. }, 0);
  237. }
  238. function getCursorInfo(el) {
  239. el = $(el)[0];
  240. var offset = 0;
  241. var length = 0;
  242. if ('selectionStart' in el) {
  243. offset = el.selectionStart;
  244. length = el.selectionEnd - offset;
  245. } else if ('selection' in document) {
  246. el.focus();
  247. var sel = document.selection.createRange();
  248. length = document.selection.createRange().text.length;
  249. sel.moveStart('character', -el.value.length);
  250. offset = sel.text.length - length;
  251. }
  252. return { offset: offset, length: length };
  253. }
  254. function killEvent(event) {
  255. event.preventDefault();
  256. event.stopPropagation();
  257. }
  258. function killEventImmediately(event) {
  259. event.preventDefault();
  260. event.stopImmediatePropagation();
  261. }
  262. function measureTextWidth(e) {
  263. if (!sizer){
  264. var style = e[0].currentStyle || window.getComputedStyle(e[0], null);
  265. sizer = $(document.createElement("div")).css({
  266. position: "absolute",
  267. left: "-10000px",
  268. top: "-10000px",
  269. display: "none",
  270. fontSize: style.fontSize,
  271. fontFamily: style.fontFamily,
  272. fontStyle: style.fontStyle,
  273. fontWeight: style.fontWeight,
  274. letterSpacing: style.letterSpacing,
  275. textTransform: style.textTransform,
  276. whiteSpace: "nowrap"
  277. });
  278. sizer.attr("class","select2-sizer");
  279. $("body").append(sizer);
  280. }
  281. sizer.text(e.val());
  282. return sizer.width();
  283. }
  284. function syncCssClasses(dest, src, adapter) {
  285. var classes, replacements = [], adapted;
  286. classes = dest.attr("class");
  287. if (classes) {
  288. classes = '' + classes; // for IE which returns object
  289. $(classes.split(" ")).each2(function() {
  290. if (this.indexOf("select2-") === 0) {
  291. replacements.push(this);
  292. }
  293. });
  294. }
  295. classes = src.attr("class");
  296. if (classes) {
  297. classes = '' + classes; // for IE which returns object
  298. $(classes.split(" ")).each2(function() {
  299. if (this.indexOf("select2-") !== 0) {
  300. adapted = adapter(this);
  301. if (adapted) {
  302. replacements.push(adapted);
  303. }
  304. }
  305. });
  306. }
  307. dest.attr("class", replacements.join(" "));
  308. }
  309. function markMatch(text, term, markup, escapeMarkup) {
  310. var match=stripDiacritics(text.toUpperCase()).indexOf(stripDiacritics(term.toUpperCase())),
  311. tl=term.length;
  312. if (match<0) {
  313. markup.push(escapeMarkup(text));
  314. return;
  315. }
  316. markup.push(escapeMarkup(text.substring(0, match)));
  317. markup.push("<span class='select2-match'>");
  318. markup.push(escapeMarkup(text.substring(match, match + tl)));
  319. markup.push("</span>");
  320. markup.push(escapeMarkup(text.substring(match + tl, text.length)));
  321. }
  322. function defaultEscapeMarkup(markup) {
  323. var replace_map = {
  324. '\\': '&#92;',
  325. '&': '&amp;',
  326. '<': '&lt;',
  327. '>': '&gt;',
  328. '"': '&quot;',
  329. "'": '&#39;',
  330. "/": '&#47;'
  331. };
  332. return String(markup).replace(/[&<>"'\/\\]/g, function (match) {
  333. return replace_map[match];
  334. });
  335. }
  336. /**
  337. * Produces an ajax-based query function
  338. *
  339. * @param options object containing configuration parameters
  340. * @param options.params parameter map for the transport ajax call, can contain such options as cache, jsonpCallback, etc. see $.ajax
  341. * @param options.transport function that will be used to execute the ajax request. must be compatible with parameters supported by $.ajax
  342. * @param options.url url for the data
  343. * @param options.data a function(searchTerm, pageNumber, context) that should return an object containing query string parameters for the above url.
  344. * @param options.dataType request data type: ajax, jsonp, other datatypes supported by jQuery's $.ajax function or the transport function if specified
  345. * @param options.quietMillis (optional) milliseconds to wait before making the ajaxRequest, helps debounce the ajax function if invoked too often
  346. * @param options.results a function(remoteData, pageNumber, query) that converts data returned form the remote request to the format expected by Select2.
  347. * The expected format is an object containing the following keys:
  348. * results array of objects that will be used as choices
  349. * more (optional) boolean indicating whether there are more results available
  350. * Example: {results:[{id:1, text:'Red'},{id:2, text:'Blue'}], more:true}
  351. */
  352. function ajax(options) {
  353. var timeout, // current scheduled but not yet executed request
  354. handler = null,
  355. quietMillis = options.quietMillis || 100,
  356. ajaxUrl = options.url,
  357. self = this;
  358. return function (query) {
  359. window.clearTimeout(timeout);
  360. timeout = window.setTimeout(function () {
  361. var data = options.data, // ajax data function
  362. url = ajaxUrl, // ajax url string or function
  363. transport = options.transport || $.fn.select2.ajaxDefaults.transport,
  364. // deprecated - to be removed in 4.0 - use params instead
  365. deprecated = {
  366. type: options.type || 'GET', // set type of request (GET or POST)
  367. cache: options.cache || false,
  368. jsonpCallback: options.jsonpCallback||undefined,
  369. dataType: options.dataType||"json"
  370. },
  371. params = $.extend({}, $.fn.select2.ajaxDefaults.params, deprecated);
  372. data = data ? data.call(self, query.term, query.page, query.context) : null;
  373. url = (typeof url === 'function') ? url.call(self, query.term, query.page, query.context) : url;
  374. if (handler && typeof handler.abort === "function") { handler.abort(); }
  375. if (options.params) {
  376. if ($.isFunction(options.params)) {
  377. $.extend(params, options.params.call(self));
  378. } else {
  379. $.extend(params, options.params);
  380. }
  381. }
  382. $.extend(params, {
  383. url: url,
  384. dataType: options.dataType,
  385. data: data,
  386. success: function (data) {
  387. // TODO - replace query.page with query so users have access to term, page, etc.
  388. // added query as third paramter to keep backwards compatibility
  389. var results = options.results(data, query.page, query);
  390. query.callback(results);
  391. }
  392. });
  393. handler = transport.call(self, params);
  394. }, quietMillis);
  395. };
  396. }
  397. /**
  398. * Produces a query function that works with a local array
  399. *
  400. * @param options object containing configuration parameters. The options parameter can either be an array or an
  401. * object.
  402. *
  403. * If the array form is used it is assumed that it contains objects with 'id' and 'text' keys.
  404. *
  405. * If the object form is used it is assumed that it contains 'data' and 'text' keys. The 'data' key should contain
  406. * an array of objects that will be used as choices. These objects must contain at least an 'id' key. The 'text'
  407. * key can either be a String in which case it is expected that each element in the 'data' array has a key with the
  408. * value of 'text' which will be used to match choices. Alternatively, text can be a function(item) that can extract
  409. * the text.
  410. */
  411. function local(options) {
  412. var data = options, // data elements
  413. dataText,
  414. tmp,
  415. text = function (item) { return ""+item.text; }; // function used to retrieve the text portion of a data item that is matched against the search
  416. if ($.isArray(data)) {
  417. tmp = data;
  418. data = { results: tmp };
  419. }
  420. if ($.isFunction(data) === false) {
  421. tmp = data;
  422. data = function() { return tmp; };
  423. }
  424. var dataItem = data();
  425. if (dataItem.text) {
  426. text = dataItem.text;
  427. // if text is not a function we assume it to be a key name
  428. if (!$.isFunction(text)) {
  429. dataText = dataItem.text; // we need to store this in a separate variable because in the next step data gets reset and data.text is no longer available
  430. text = function (item) { return item[dataText]; };
  431. }
  432. }
  433. return function (query) {
  434. var t = query.term, filtered = { results: [] }, process;
  435. if (t === "") {
  436. query.callback(data());
  437. return;
  438. }
  439. process = function(datum, collection) {
  440. var group, attr;
  441. datum = datum[0];
  442. if (datum.children) {
  443. group = {};
  444. for (attr in datum) {
  445. if (datum.hasOwnProperty(attr)) group[attr]=datum[attr];
  446. }
  447. group.children=[];
  448. $(datum.children).each2(function(i, childDatum) { process(childDatum, group.children); });
  449. if (group.children.length || query.matcher(t, text(group), datum)) {
  450. collection.push(group);
  451. }
  452. } else {
  453. if (query.matcher(t, text(datum), datum)) {
  454. collection.push(datum);
  455. }
  456. }
  457. };
  458. $(data().results).each2(function(i, datum) { process(datum, filtered.results); });
  459. query.callback(filtered);
  460. };
  461. }
  462. // TODO javadoc
  463. function tags(data) {
  464. var isFunc = $.isFunction(data);
  465. return function (query) {
  466. var t = query.term, filtered = {results: []};
  467. var result = isFunc ? data(query) : data;
  468. if ($.isArray(result)) {
  469. $(result).each(function () {
  470. var isObject = this.text !== undefined,
  471. text = isObject ? this.text : this;
  472. if (t === "" || query.matcher(t, text)) {
  473. filtered.results.push(isObject ? this : {id: this, text: this});
  474. }
  475. });
  476. query.callback(filtered);
  477. }
  478. };
  479. }
  480. /**
  481. * Checks if the formatter function should be used.
  482. *
  483. * Throws an error if it is not a function. Returns true if it should be used,
  484. * false if no formatting should be performed.
  485. *
  486. * @param formatter
  487. */
  488. function checkFormatter(formatter, formatterName) {
  489. if ($.isFunction(formatter)) return true;
  490. if (!formatter) return false;
  491. if (typeof(formatter) === 'string') return true;
  492. throw new Error(formatterName +" must be a string, function, or falsy value");
  493. }
  494. /**
  495. * Returns a given value
  496. * If given a function, returns its output
  497. *
  498. * @param val string|function
  499. * @param context value of "this" to be passed to function
  500. * @returns {*}
  501. */
  502. function evaluate(val, context) {
  503. if ($.isFunction(val)) {
  504. var args = Array.prototype.slice.call(arguments, 2);
  505. return val.apply(context, args);
  506. }
  507. return val;
  508. }
  509. function countResults(results) {
  510. var count = 0;
  511. $.each(results, function(i, item) {
  512. if (item.children) {
  513. count += countResults(item.children);
  514. } else {
  515. count++;
  516. }
  517. });
  518. return count;
  519. }
  520. /**
  521. * Default tokenizer. This function uses breaks the input on substring match of any string from the
  522. * opts.tokenSeparators array and uses opts.createSearchChoice to create the choice object. Both of those
  523. * two options have to be defined in order for the tokenizer to work.
  524. *
  525. * @param input text user has typed so far or pasted into the search field
  526. * @param selection currently selected choices
  527. * @param selectCallback function(choice) callback tho add the choice to selection
  528. * @param opts select2's opts
  529. * @return undefined/null to leave the current input unchanged, or a string to change the input to the returned value
  530. */
  531. function defaultTokenizer(input, selection, selectCallback, opts) {
  532. var original = input, // store the original so we can compare and know if we need to tell the search to update its text
  533. dupe = false, // check for whether a token we extracted represents a duplicate selected choice
  534. token, // token
  535. index, // position at which the separator was found
  536. i, l, // looping variables
  537. separator; // the matched separator
  538. if (!opts.createSearchChoice || !opts.tokenSeparators || opts.tokenSeparators.length < 1) return undefined;
  539. while (true) {
  540. index = -1;
  541. for (i = 0, l = opts.tokenSeparators.length; i < l; i++) {
  542. separator = opts.tokenSeparators[i];
  543. index = input.indexOf(separator);
  544. if (index >= 0) break;
  545. }
  546. if (index < 0) break; // did not find any token separator in the input string, bail
  547. token = input.substring(0, index);
  548. input = input.substring(index + separator.length);
  549. if (token.length > 0) {
  550. token = opts.createSearchChoice.call(this, token, selection);
  551. if (token !== undefined && token !== null && opts.id(token) !== undefined && opts.id(token) !== null) {
  552. dupe = false;
  553. for (i = 0, l = selection.length; i < l; i++) {
  554. if (equal(opts.id(token), opts.id(selection[i]))) {
  555. dupe = true; break;
  556. }
  557. }
  558. if (!dupe) selectCallback(token);
  559. }
  560. }
  561. }
  562. if (original!==input) return input;
  563. }
  564. function cleanupJQueryElements() {
  565. var self = this;
  566. Array.prototype.forEach.call(arguments, function (element) {
  567. self[element].remove();
  568. self[element] = null;
  569. });
  570. }
  571. /**
  572. * Creates a new class
  573. *
  574. * @param superClass
  575. * @param methods
  576. */
  577. function clazz(SuperClass, methods) {
  578. var constructor = function () {};
  579. constructor.prototype = new SuperClass;
  580. constructor.prototype.constructor = constructor;
  581. constructor.prototype.parent = SuperClass.prototype;
  582. constructor.prototype = $.extend(constructor.prototype, methods);
  583. return constructor;
  584. }
  585. AbstractSelect2 = clazz(Object, {
  586. // abstract
  587. bind: function (func) {
  588. var self = this;
  589. return function () {
  590. func.apply(self, arguments);
  591. };
  592. },
  593. // abstract
  594. init: function (opts) {
  595. var results, search, resultsSelector = ".select2-results";
  596. // prepare options
  597. this.opts = opts = this.prepareOpts(opts);
  598. this.id=opts.id;
  599. // destroy if called on an existing component
  600. if (opts.element.data("select2") !== undefined &&
  601. opts.element.data("select2") !== null) {
  602. opts.element.data("select2").destroy();
  603. }
  604. this.container = this.createContainer();
  605. this.liveRegion = $("<span>", {
  606. role: "status",
  607. "aria-live": "polite"
  608. })
  609. .addClass("select2-hidden-accessible")
  610. .appendTo(document.body);
  611. this.containerId="s2id_"+(opts.element.attr("id") || "autogen"+nextUid());
  612. this.containerEventName= this.containerId
  613. .replace(/([.])/g, '_')
  614. .replace(/([;&,\-\.\+\*\~':"\!\^#$%@\[\]\(\)=>\|])/g, '\\$1');
  615. this.container.attr("id", this.containerId);
  616. this.container.attr("title", opts.element.attr("title"));
  617. this.body = $("body");
  618. syncCssClasses(this.container, this.opts.element, this.opts.adaptContainerCssClass);
  619. this.container.attr("style", opts.element.attr("style"));
  620. this.container.css(evaluate(opts.containerCss, this.opts.element));
  621. this.container.addClass(evaluate(opts.containerCssClass, this.opts.element));
  622. this.elementTabIndex = this.opts.element.attr("tabindex");
  623. // swap container for the element
  624. this.opts.element
  625. .data("select2", this)
  626. .attr("tabindex", "-1")
  627. .before(this.container)
  628. .on("click.select2", killEvent); // do not leak click events
  629. this.container.data("select2", this);
  630. this.dropdown = this.container.find(".select2-drop");
  631. syncCssClasses(this.dropdown, this.opts.element, this.opts.adaptDropdownCssClass);
  632. this.dropdown.addClass(evaluate(opts.dropdownCssClass, this.opts.element));
  633. this.dropdown.data("select2", this);
  634. this.dropdown.on("click", killEvent);
  635. this.results = results = this.container.find(resultsSelector);
  636. this.search = search = this.container.find("input.select2-input");
  637. this.queryCount = 0;
  638. this.resultsPage = 0;
  639. this.context = null;
  640. // initialize the container
  641. this.initContainer();
  642. this.container.on("click", killEvent);
  643. installFilteredMouseMove(this.results);
  644. this.dropdown.on("mousemove-filtered", resultsSelector, this.bind(this.highlightUnderEvent));
  645. this.dropdown.on("touchstart touchmove touchend", resultsSelector, this.bind(function (event) {
  646. this._touchEvent = true;
  647. this.highlightUnderEvent(event);
  648. }));
  649. this.dropdown.on("touchmove", resultsSelector, this.bind(this.touchMoved));
  650. this.dropdown.on("touchstart touchend", resultsSelector, this.bind(this.clearTouchMoved));
  651. // Waiting for a click event on touch devices to select option and hide dropdown
  652. // otherwise click will be triggered on an underlying element
  653. this.dropdown.on('click', this.bind(function (event) {
  654. if (this._touchEvent) {
  655. this._touchEvent = false;
  656. this.selectHighlighted();
  657. }
  658. }));
  659. installDebouncedScroll(80, this.results);
  660. this.dropdown.on("scroll-debounced", resultsSelector, this.bind(this.loadMoreIfNeeded));
  661. // do not propagate change event from the search field out of the component
  662. $(this.container).on("change", ".select2-input", function(e) {e.stopPropagation();});
  663. $(this.dropdown).on("change", ".select2-input", function(e) {e.stopPropagation();});
  664. // if jquery.mousewheel plugin is installed we can prevent out-of-bounds scrolling of results via mousewheel
  665. if ($.fn.mousewheel) {
  666. results.mousewheel(function (e, delta, deltaX, deltaY) {
  667. var top = results.scrollTop();
  668. if (deltaY > 0 && top - deltaY <= 0) {
  669. results.scrollTop(0);
  670. killEvent(e);
  671. } else if (deltaY < 0 && results.get(0).scrollHeight - results.scrollTop() + deltaY <= results.height()) {
  672. results.scrollTop(results.get(0).scrollHeight - results.height());
  673. killEvent(e);
  674. }
  675. });
  676. }
  677. installKeyUpChangeEvent(search);
  678. search.on("keyup-change input paste", this.bind(this.updateResults));
  679. search.on("focus", function () { search.addClass("select2-focused"); });
  680. search.on("blur", function () { search.removeClass("select2-focused");});
  681. this.dropdown.on("mouseup", resultsSelector, this.bind(function (e) {
  682. if ($(e.target).closest(".select2-result-selectable").length > 0) {
  683. this.highlightUnderEvent(e);
  684. this.selectHighlighted(e);
  685. }
  686. }));
  687. // trap all mouse events from leaving the dropdown. sometimes there may be a modal that is listening
  688. // for mouse events outside of itself so it can close itself. since the dropdown is now outside the select2's
  689. // dom it will trigger the popup close, which is not what we want
  690. // focusin can cause focus wars between modals and select2 since the dropdown is outside the modal.
  691. this.dropdown.on("click mouseup mousedown touchstart touchend focusin", function (e) { e.stopPropagation(); });
  692. this.nextSearchTerm = undefined;
  693. if ($.isFunction(this.opts.initSelection)) {
  694. // initialize selection based on the current value of the source element
  695. this.initSelection();
  696. // if the user has provided a function that can set selection based on the value of the source element
  697. // we monitor the change event on the element and trigger it, allowing for two way synchronization
  698. this.monitorSource();
  699. }
  700. if (opts.maximumInputLength !== null) {
  701. this.search.attr("maxlength", opts.maximumInputLength);
  702. }
  703. var disabled = opts.element.prop("disabled");
  704. if (disabled === undefined) disabled = false;
  705. this.enable(!disabled);
  706. var readonly = opts.element.prop("readonly");
  707. if (readonly === undefined) readonly = false;
  708. this.readonly(readonly);
  709. // Calculate size of scrollbar
  710. scrollBarDimensions = scrollBarDimensions || measureScrollbar();
  711. this.autofocus = opts.element.prop("autofocus");
  712. opts.element.prop("autofocus", false);
  713. if (this.autofocus) this.focus();
  714. this.search.attr("placeholder", opts.searchInputPlaceholder);
  715. },
  716. // abstract
  717. destroy: function () {
  718. var element=this.opts.element, select2 = element.data("select2");
  719. this.close();
  720. if (element.length && element[0].detachEvent) {
  721. element.each(function () {
  722. this.detachEvent("onpropertychange", this._sync);
  723. });
  724. }
  725. if (this.propertyObserver) {
  726. this.propertyObserver.disconnect();
  727. this.propertyObserver = null;
  728. }
  729. this._sync = null;
  730. if (select2 !== undefined) {
  731. select2.container.remove();
  732. select2.liveRegion.remove();
  733. select2.dropdown.remove();
  734. element
  735. .removeClass("select2-offscreen")
  736. .removeData("select2")
  737. .off(".select2")
  738. .prop("autofocus", this.autofocus || false);
  739. if (this.elementTabIndex) {
  740. element.attr({tabindex: this.elementTabIndex});
  741. } else {
  742. element.removeAttr("tabindex");
  743. }
  744. element.show();
  745. }
  746. cleanupJQueryElements.call(this,
  747. "container",
  748. "liveRegion",
  749. "dropdown",
  750. "results",
  751. "search"
  752. );
  753. },
  754. // abstract
  755. optionToData: function(element) {
  756. if (element.is("option")) {
  757. return {
  758. id:element.prop("value"),
  759. text:element.text(),
  760. element: element.get(),
  761. css: element.attr("class"),
  762. disabled: element.prop("disabled"),
  763. locked: equal(element.attr("locked"), "locked") || equal(element.data("locked"), true)
  764. };
  765. } else if (element.is("optgroup")) {
  766. return {
  767. text:element.attr("label"),
  768. children:[],
  769. element: element.get(),
  770. css: element.attr("class")
  771. };
  772. }
  773. },
  774. // abstract
  775. prepareOpts: function (opts) {
  776. var element, select, idKey, ajaxUrl, self = this;
  777. element = opts.element;
  778. if (element.get(0).tagName.toLowerCase() === "select") {
  779. this.select = select = opts.element;
  780. }
  781. if (select) {
  782. // these options are not allowed when attached to a select because they are picked up off the element itself
  783. $.each(["id", "multiple", "ajax", "query", "createSearchChoice", "initSelection", "data", "tags"], function () {
  784. if (this in opts) {
  785. throw new Error("Option '" + this + "' is not allowed for Select2 when attached to a <select> element.");
  786. }
  787. });
  788. }
  789. opts = $.extend({}, {
  790. populateResults: function(container, results, query) {
  791. var populate, id=this.opts.id, liveRegion=this.liveRegion;
  792. populate=function(results, container, depth) {
  793. var i, l, result, selectable, disabled, compound, node, label, innerContainer, formatted;
  794. results = opts.sortResults(results, container, query);
  795. for (i = 0, l = results.length; i < l; i = i + 1) {
  796. result=results[i];
  797. disabled = (result.disabled === true);
  798. selectable = (!disabled) && (id(result) !== undefined);
  799. compound=result.children && result.children.length > 0;
  800. node=$("<li></li>");
  801. node.addClass("select2-results-dept-"+depth);
  802. node.addClass("select2-result");
  803. node.addClass(selectable ? "select2-result-selectable" : "select2-result-unselectable");
  804. if (disabled) { node.addClass("select2-disabled"); }
  805. if (compound) { node.addClass("select2-result-with-children"); }
  806. node.addClass(self.opts.formatResultCssClass(result));
  807. node.attr("role", "presentation");
  808. label=$(document.createElement("div"));
  809. label.addClass("select2-result-label");
  810. label.attr("id", "select2-result-label-" + nextUid());
  811. label.attr("role", "option");
  812. formatted=opts.formatResult(result, label, query, self.opts.escapeMarkup);
  813. if (formatted!==undefined) {
  814. label.html(formatted);
  815. node.append(label);
  816. }
  817. if (compound) {
  818. innerContainer=$("<ul></ul>");
  819. innerContainer.addClass("select2-result-sub");
  820. populate(result.children, innerContainer, depth+1);
  821. node.append(innerContainer);
  822. }
  823. node.data("select2-data", result);
  824. container.append(node);
  825. }
  826. liveRegion.text(opts.formatMatches(results.length));
  827. };
  828. populate(results, container, 0);
  829. }
  830. }, $.fn.select2.defaults, opts);
  831. if (typeof(opts.id) !== "function") {
  832. idKey = opts.id;
  833. opts.id = function (e) { return e[idKey]; };
  834. }
  835. if ($.isArray(opts.element.data("select2Tags"))) {
  836. if ("tags" in opts) {
  837. throw "tags specified as both an attribute 'data-select2-tags' and in options of Select2 " + opts.element.attr("id");
  838. }
  839. opts.tags=opts.element.data("select2Tags");
  840. }
  841. if (select) {
  842. opts.query = this.bind(function (query) {
  843. var data = { results: [], more: false },
  844. term = query.term,
  845. children, placeholderOption, process;
  846. process=function(element, collection) {
  847. var group;
  848. if (element.is("option")) {
  849. if (query.matcher(term, element.text(), element)) {
  850. collection.push(self.optionToData(element));
  851. }
  852. } else if (element.is("optgroup")) {
  853. group=self.optionToData(element);
  854. element.children().each2(function(i, elm) { process(elm, group.children); });
  855. if (group.children.length>0) {
  856. collection.push(group);
  857. }
  858. }
  859. };
  860. children=element.children();
  861. // ignore the placeholder option if there is one
  862. if (this.getPlaceholder() !== undefined && children.length > 0) {
  863. placeholderOption = this.getPlaceholderOption();
  864. if (placeholderOption) {
  865. children=children.not(placeholderOption);
  866. }
  867. }
  868. children.each2(function(i, elm) { process(elm, data.results); });
  869. query.callback(data);
  870. });
  871. // this is needed because inside val() we construct choices from options and there id is hardcoded
  872. opts.id=function(e) { return e.id; };
  873. } else {
  874. if (!("query" in opts)) {
  875. if ("ajax" in opts) {
  876. ajaxUrl = opts.element.data("ajax-url");
  877. if (ajaxUrl && ajaxUrl.length > 0) {
  878. opts.ajax.url = ajaxUrl;
  879. }
  880. opts.query = ajax.call(opts.element, opts.ajax);
  881. } else if ("data" in opts) {
  882. opts.query = local(opts.data);
  883. } else if ("tags" in opts) {
  884. opts.query = tags(opts.tags);
  885. if (opts.createSearchChoice === undefined) {
  886. opts.createSearchChoice = function (term) { return {id: $.trim(term), text: $.trim(term)}; };
  887. }
  888. if (opts.initSelection === undefined) {
  889. opts.initSelection = function (element, callback) {
  890. var data = [];
  891. $(splitVal(element.val(), opts.separator)).each(function () {
  892. var obj = { id: this, text: this },
  893. tags = opts.tags;
  894. if ($.isFunction(tags)) tags=tags();
  895. $(tags).each(function() { if (equal(this.id, obj.id)) { obj = this; return false; } });
  896. data.push(obj);
  897. });
  898. callback(data);
  899. };
  900. }
  901. }
  902. }
  903. }
  904. if (typeof(opts.query) !== "function") {
  905. throw "query function not defined for Select2 " + opts.element.attr("id");
  906. }
  907. if (opts.createSearchChoicePosition === 'top') {
  908. opts.createSearchChoicePosition = function(list, item) { list.unshift(item); };
  909. }
  910. else if (opts.createSearchChoicePosition === 'bottom') {
  911. opts.createSearchChoicePosition = function(list, item) { list.push(item); };
  912. }
  913. else if (typeof(opts.createSearchChoicePosition) !== "function") {
  914. throw "invalid createSearchChoicePosition option must be 'top', 'bottom' or a custom function";
  915. }
  916. return opts;
  917. },
  918. /**
  919. * Monitor the original element for changes and update select2 accordingly
  920. */
  921. // abstract
  922. monitorSource: function () {
  923. var el = this.opts.element, observer, self = this;
  924. el.on("change.select2", this.bind(function (e) {
  925. if (this.opts.element.data("select2-change-triggered") !== true) {
  926. this.initSelection();
  927. }
  928. }));
  929. this._sync = this.bind(function () {
  930. // sync enabled state
  931. var disabled = el.prop("disabled");
  932. if (disabled === undefined) disabled = false;
  933. this.enable(!disabled);
  934. var readonly = el.prop("readonly");
  935. if (readonly === undefined) readonly = false;
  936. this.readonly(readonly);
  937. syncCssClasses(this.container, this.opts.element, this.opts.adaptContainerCssClass);
  938. this.container.addClass(evaluate(this.opts.containerCssClass, this.opts.element));
  939. syncCssClasses(this.dropdown, this.opts.element, this.opts.adaptDropdownCssClass);
  940. this.dropdown.addClass(evaluate(this.opts.dropdownCssClass, this.opts.element));
  941. });
  942. // IE8-10 (IE9/10 won't fire propertyChange via attachEventListener)
  943. if (el.length && el[0].attachEvent) {
  944. el.each(function() {
  945. this.attachEvent("onpropertychange", self._sync);
  946. });
  947. }
  948. // safari, chrome, firefox, IE11
  949. observer = window.MutationObserver || window.WebKitMutationObserver|| window.MozMutationObserver;
  950. if (observer !== undefined) {
  951. if (this.propertyObserver) { delete this.propertyObserver; this.propertyObserver = null; }
  952. this.propertyObserver = new observer(function (mutations) {
  953. mutations.forEach(self._sync);
  954. });
  955. this.propertyObserver.observe(el.get(0), { attributes:true, subtree:false });
  956. }
  957. },
  958. // abstract
  959. triggerSelect: function(data) {
  960. var evt = $.Event("select2-selecting", { val: this.id(data), object: data });
  961. this.opts.element.trigger(evt);
  962. return !evt.isDefaultPrevented();
  963. },
  964. /**
  965. * Triggers the change event on the source element
  966. */
  967. // abstract
  968. triggerChange: function (details) {
  969. details = details || {};
  970. details= $.extend({}, details, { type: "change", val: this.val() });
  971. // prevents recursive triggering
  972. this.opts.element.data("select2-change-triggered", true);
  973. this.opts.element.trigger(details);
  974. this.opts.element.data("select2-change-triggered", false);
  975. // some validation frameworks ignore the change event and listen instead to keyup, click for selects
  976. // so here we trigger the click event manually
  977. this.opts.element.click();
  978. // ValidationEngine ignores the change event and listens instead to blur
  979. // so here we trigger the blur event manually if so desired
  980. if (this.opts.blurOnChange)
  981. this.opts.element.blur();
  982. },
  983. //abstract
  984. isInterfaceEnabled: function()
  985. {
  986. return this.enabledInterface === true;
  987. },
  988. // abstract
  989. enableInterface: function() {
  990. var enabled = this._enabled && !this._readonly,
  991. disabled = !enabled;
  992. if (enabled === this.enabledInterface) return false;
  993. this.container.toggleClass("select2-container-disabled", disabled);
  994. this.close();
  995. this.enabledInterface = enabled;
  996. return true;
  997. },
  998. // abstract
  999. enable: function(enabled) {
  1000. if (enabled === undefined) enabled = true;
  1001. if (this._enabled === enabled) return;
  1002. this._enabled = enabled;
  1003. this.opts.element.prop("disabled", !enabled);
  1004. this.enableInterface();
  1005. },
  1006. // abstract
  1007. disable: function() {
  1008. this.enable(false);
  1009. },
  1010. // abstract
  1011. readonly: function(enabled) {
  1012. if (enabled === undefined) enabled = false;
  1013. if (this._readonly === enabled) return;
  1014. this._readonly = enabled;
  1015. this.opts.element.prop("readonly", enabled);
  1016. this.enableInterface();
  1017. },
  1018. // abstract
  1019. opened: function () {
  1020. return this.container.hasClass("select2-dropdown-open");
  1021. },
  1022. // abstract
  1023. positionDropdown: function() {
  1024. var $dropdown = this.dropdown,
  1025. offset = this.container.offset(),
  1026. height = this.container.outerHeight(false),
  1027. width = this.container.outerWidth(false),
  1028. dropHeight = $dropdown.outerHeight(false),
  1029. $window = $(window),
  1030. windowWidth = $window.width(),
  1031. windowHeight = $window.height(),
  1032. viewPortRight = $window.scrollLeft() + windowWidth,
  1033. viewportBottom = $window.scrollTop() + windowHeight,
  1034. dropTop = offset.top + height,
  1035. dropLeft = offset.left,
  1036. enoughRoomBelow = dropTop + dropHeight <= viewportBottom,
  1037. enoughRoomAbove = (offset.top - dropHeight) >= $window.scrollTop(),
  1038. dropWidth = $dropdown.outerWidth(false),
  1039. enoughRoomOnRight = dropLeft + dropWidth <= viewPortRight,
  1040. aboveNow = $dropdown.hasClass("select2-drop-above"),
  1041. bodyOffset,
  1042. above,
  1043. changeDirection,
  1044. css,
  1045. resultsListNode;
  1046. // always prefer the current above/below alignment, unless there is not enough room
  1047. if (aboveNow) {
  1048. above = true;
  1049. if (!enoughRoomAbove && enoughRoomBelow) {
  1050. changeDirection = true;
  1051. above = false;
  1052. }
  1053. } else {
  1054. above = false;
  1055. if (!enoughRoomBelow && enoughRoomAbove) {
  1056. changeDirection = true;
  1057. above = true;
  1058. }
  1059. }
  1060. //if we are changing direction we need to get positions when dropdown is hidden;
  1061. if (changeDirection) {
  1062. $dropdown.hide();
  1063. offset = this.container.offset();
  1064. height = this.container.outerHeight(false);
  1065. width = this.container.outerWidth(false);
  1066. dropHeight = $dropdown.outerHeight(false);
  1067. viewPortRight = $window.scrollLeft() + windowWidth;
  1068. viewportBottom = $window.scrollTop() + windowHeight;
  1069. dropTop = offset.top + height;
  1070. dropLeft = offset.left;
  1071. dropWidth = $dropdown.outerWidth(false);
  1072. enoughRoomOnRight = dropLeft + dropWidth <= viewPortRight;
  1073. $dropdown.show();
  1074. // fix so the cursor does not move to the left within the search-textbox in IE
  1075. this.focusSearch();
  1076. }
  1077. if (this.opts.dropdownAutoWidth) {
  1078. resultsListNode = $('.select2-results', $dropdown)[0];
  1079. $dropdown.addClass('select2-drop-auto-width');
  1080. $dropdown.css('width', '');
  1081. // Add scrollbar width to dropdown if vertical scrollbar is present
  1082. dropWidth = $dropdown.outerWidth(false) + (resultsListNode.scrollHeight === resultsListNode.clientHeight ? 0 : scrollBarDimensions.width);
  1083. dropWidth > width ? width = dropWidth : dropWidth = width;
  1084. dropHeight = $dropdown.outerHeight(false);
  1085. enoughRoomOnRight = dropLeft + dropWidth <= viewPortRight;
  1086. }
  1087. else {
  1088. this.container.removeClass('select2-drop-auto-width');
  1089. }
  1090. //console.log("below/ droptop:", dropTop, "dropHeight", dropHeight, "sum", (dropTop+dropHeight)+" viewport bottom", viewportBottom, "enough?", enoughRoomBelow);
  1091. //console.log("above/ offset.top", offset.top, "dropHeight", dropHeight, "top", (offset.top-dropHeight), "scrollTop", this.body.scrollTop(), "enough?", enoughRoomAbove);
  1092. // fix positioning when body has an offset and is not position: static
  1093. if (this.body.css('position') !== 'static') {
  1094. bodyOffset = this.body.offset();
  1095. dropTop -= bodyOffset.top;
  1096. dropLeft -= bodyOffset.left;
  1097. }
  1098. if (!enoughRoomOnRight) {
  1099. dropLeft = offset.left + this.container.outerWidth(false) - dropWidth;
  1100. }
  1101. css = {
  1102. left: dropLeft,
  1103. width: width
  1104. };
  1105. if (above) {
  1106. css.top = offset.top - dropHeight;
  1107. css.bottom = 'auto';
  1108. this.container.addClass("select2-drop-above");
  1109. $dropdown.addClass("select2-drop-above");
  1110. }
  1111. else {
  1112. css.top = dropTop;
  1113. css.bottom = 'auto';
  1114. this.container.removeClass("select2-drop-above");
  1115. $dropdown.removeClass("select2-drop-above");
  1116. }
  1117. css = $.extend(css, evaluate(this.opts.dropdownCss, this.opts.element));
  1118. $dropdown.css(css);
  1119. },
  1120. // abstract
  1121. shouldOpen: function() {
  1122. var event;
  1123. if (this.opened()) return false;
  1124. if (this._enabled === false || this._readonly === true) return false;
  1125. event = $.Event("select2-opening");
  1126. this.opts.element.trigger(event);
  1127. return !event.isDefaultPrevented();
  1128. },
  1129. // abstract
  1130. clearDropdownAlignmentPreference: function() {
  1131. // clear the classes used to figure out the preference of where the dropdown should be opened
  1132. this.container.removeClass("select2-drop-above");
  1133. this.dropdown.removeClass("select2-drop-above");
  1134. },
  1135. /**
  1136. * Opens the dropdown
  1137. *
  1138. * @return {Boolean} whether or not dropdown was opened. This method will return false if, for example,
  1139. * the dropdown is already open, or if the 'open' event listener on the element called preventDefault().
  1140. */
  1141. // abstract
  1142. open: function () {
  1143. if (!this.shouldOpen()) return false;
  1144. this.opening();
  1145. return true;
  1146. },
  1147. /**
  1148. * Performs the opening of the dropdown
  1149. */
  1150. // abstract
  1151. opening: function() {
  1152. var cid = this.containerEventName,
  1153. scroll = "scroll." + cid,
  1154. resize = "resize."+cid,
  1155. orient = "orientationchange."+cid,
  1156. mask;
  1157. this.container.addClass("select2-dropdown-open").addClass("select2-container-active");
  1158. this.clearDropdownAlignmentPreference();
  1159. if(this.dropdown[0] !== this.body.children().last()[0]) {
  1160. this.dropdown.detach().appendTo(this.body);
  1161. }
  1162. // create the dropdown mask if doesn't already exist
  1163. mask = $("#select2-drop-mask");
  1164. if (mask.length == 0) {
  1165. mask = $(document.createElement("div"));
  1166. mask.attr("id","select2-drop-mask").attr("class","select2-drop-mask");
  1167. mask.hide();
  1168. mask.appendTo(this.body);
  1169. mask.on("mousedown touchstart click", function (e) {
  1170. // Prevent IE from generating a click event on the body
  1171. reinsertElement(mask);
  1172. var dropdown = $("#select2-drop"), self;
  1173. if (dropdown.length > 0) {
  1174. self=dropdown.data("select2");
  1175. if (self.opts.selectOnBlur) {
  1176. self.selectHighlighted({noFocus: true});
  1177. }
  1178. self.close();
  1179. e.preventDefault();
  1180. e.stopPropagation();
  1181. }
  1182. });
  1183. }
  1184. // ensure the mask is always right before the dropdown
  1185. if (this.dropdown.prev()[0] !== mask[0]) {
  1186. this.dropdown.before(mask);
  1187. }
  1188. // move the global id to the correct dropdown
  1189. $("#select2-drop").removeAttr("id");
  1190. this.dropdown.attr("id", "select2-drop");
  1191. // show the elements
  1192. mask.show();
  1193. this.positionDropdown();
  1194. this.dropdown.show();
  1195. this.positionDropdown();
  1196. this.dropdown.addClass("select2-drop-active");
  1197. // attach listeners to events that can change the position of the container and thus require
  1198. // the position of the dropdown to be updated as well so it does not come unglued from the container
  1199. var that = this;
  1200. this.container.parents().add(window).each(function () {
  1201. $(this).on(resize+" "+scroll+" "+orient, function (e) {
  1202. if (that.opened()) that.positionDropdown();
  1203. });
  1204. });
  1205. },
  1206. // abstract
  1207. close: function () {
  1208. if (!this.opened()) return;
  1209. var cid = this.containerEventName,
  1210. scroll = "scroll." + cid,
  1211. resize = "resize."+cid,
  1212. orient = "orientationchange."+cid;
  1213. // unbind event listeners
  1214. this.container.parents().add(window).each(function () { $(this).off(scroll).off(resize).off(orient); });
  1215. this.clearDropdownAlignmentPreference();
  1216. $("#select2-drop-mask").hide();
  1217. this.dropdown.removeAttr("id"); // only the active dropdown has the select2-drop id
  1218. this.dropdown.hide();
  1219. this.container.removeClass("select2-dropdown-open").removeClass("select2-container-active");
  1220. this.results.empty();
  1221. this.clearSearch();
  1222. this.search.removeClass("select2-active");
  1223. this.opts.element.trigger($.Event("select2-close"));
  1224. },
  1225. /**
  1226. * Opens control, sets input value, and updates results.
  1227. */
  1228. // abstract
  1229. externalSearch: function (term) {
  1230. this.open();
  1231. this.search.val(term);
  1232. this.updateResults(false);
  1233. },
  1234. // abstract
  1235. clearSearch: function () {
  1236. },
  1237. //abstract
  1238. getMaximumSelectionSize: function() {
  1239. return evaluate(this.opts.maximumSelectionSize, this.opts.element);
  1240. },
  1241. // abstract
  1242. ensureHighlightVisible: function () {
  1243. var results = this.results, children, index, child, hb, rb, y, more;
  1244. index = this.highlight();
  1245. if (index < 0) return;
  1246. if (index == 0) {
  1247. // if the first element is highlighted scroll all the way to the top,
  1248. // that way any unselectable headers above it will also be scrolled
  1249. // into view
  1250. results.scrollTop(0);
  1251. return;
  1252. }
  1253. children = this.findHighlightableChoices().find('.select2-result-label');
  1254. child = $(children[index]);
  1255. hb = child.offset().top + child.outerHeight(true);
  1256. // if this is the last child lets also make sure select2-more-results is visible
  1257. if (index === children.length - 1) {
  1258. more = results.find("li.select2-more-results");
  1259. if (more.length > 0) {
  1260. hb = more.offset().top + more.outerHeight(true);
  1261. }
  1262. }
  1263. rb = results.offset().top + results.outerHeight(true);
  1264. if (hb > rb) {
  1265. results.scrollTop(results.scrollTop() + (hb - rb));
  1266. }
  1267. y = child.offset().top - results.offset().top;
  1268. // make sure the top of the element is visible
  1269. if (y < 0 && child.css('display') != 'none' ) {
  1270. results.scrollTop(results.scrollTop() + y); // y is negative
  1271. }
  1272. },
  1273. // abstract
  1274. findHighlightableChoices: function() {
  1275. return this.results.find(".select2-result-selectable:not(.select2-disabled):not(.select2-selected)");
  1276. },
  1277. // abstract
  1278. moveHighlight: function (delta) {
  1279. var choices = this.findHighlightableChoices(),
  1280. index = this.highlight();
  1281. while (index > -1 && index < choices.length) {
  1282. index += delta;
  1283. var choice = $(choices[index]);
  1284. if (choice.hasClass("select2-result-selectable") && !choice.hasClass("select2-disabled") && !choice.hasClass("select2-selected")) {
  1285. this.highlight(index);
  1286. break;
  1287. }
  1288. }
  1289. },
  1290. // abstract
  1291. highlight: function (index) {
  1292. var choices = this.findHighlightableChoices(),
  1293. choice,
  1294. data;
  1295. if (arguments.length === 0) {
  1296. return indexOf(choices.filter(".select2-highlighted")[0], choices.get());
  1297. }
  1298. if (index >= choices.length) index = choices.length - 1;
  1299. if (index < 0) index = 0;
  1300. this.removeHighlight();
  1301. choice = $(choices[index]);
  1302. choice.addClass("select2-highlighted");
  1303. // ensure assistive technology can determine the active choice
  1304. this.search.attr("aria-activedescendant", choice.find(".select2-result-label").attr("id"));
  1305. this.ensureHighlightVisible();
  1306. this.liveRegion.text(choice.text());
  1307. data = choice.data("select2-data");
  1308. if (data) {
  1309. this.opts.element.trigger({ type: "select2-highlight", val: this.id(data), choice: data });
  1310. }
  1311. },
  1312. removeHighlight: function() {
  1313. this.results.find(".select2-highlighted").removeClass("select2-highlighted");
  1314. },
  1315. touchMoved: function() {
  1316. this._touchMoved = true;
  1317. },
  1318. clearTouchMoved: function() {
  1319. this._touchMoved = false;
  1320. },
  1321. // abstract
  1322. countSelectableResults: function() {
  1323. return this.findHighlightableChoices().length;
  1324. },
  1325. // abstract
  1326. highlightUnderEvent: function (event) {
  1327. var el = $(event.target).closest(".select2-result-selectable");
  1328. if (el.length > 0 && !el.is(".select2-highlighted")) {
  1329. var choices = this.findHighlightableChoices();
  1330. this.highlight(choices.index(el));
  1331. } else if (el.length == 0) {
  1332. // if we are over an unselectable item remove all highlights
  1333. this.removeHighlight();
  1334. }
  1335. },
  1336. // abstract
  1337. loadMoreIfNeeded: function () {
  1338. var results = this.results,
  1339. more = results.find("li.select2-more-results"),
  1340. below, // pixels the element is below the scroll fold, below==0 is when the element is starting to be visible
  1341. page = this.resultsPage + 1,
  1342. self=this,
  1343. term=this.search.val(),
  1344. context=this.context;
  1345. if (more.length === 0) return;
  1346. below = more.offset().top - results.offset().top - results.height();
  1347. if (below <= this.opts.loadMorePadding) {
  1348. more.addClass("select2-active");
  1349. this.opts.query({
  1350. element: this.opts.element,
  1351. term: term,
  1352. page: page,
  1353. context: context,
  1354. matcher: this.opts.matcher,
  1355. callback: this.bind(function (data) {
  1356. // ignore a response if the select2 has been closed before it was received
  1357. if (!self.opened()) return;
  1358. self.opts.populateResults.call(this, results, data.results, {term: term, page: page, context:context});
  1359. self.postprocessResults(data, false, false);
  1360. if (data.more===true) {
  1361. more.detach().appendTo(results).text(evaluate(self.opts.formatLoadMore, self.opts.element, page+1));
  1362. window.setTimeout(function() { self.loadMoreIfNeeded(); }, 10);
  1363. } else {
  1364. more.remove();
  1365. }
  1366. self.positionDropdown();
  1367. self.resultsPage = page;
  1368. self.context = data.context;
  1369. this.opts.element.trigger({ type: "select2-loaded", items: data });
  1370. })});
  1371. }
  1372. },
  1373. /**
  1374. * Default tokenizer function which does nothing
  1375. */
  1376. tokenize: function() {
  1377. },
  1378. /**
  1379. * @param initial whether or not this is the call to this method right after the dropdown has been opened
  1380. */
  1381. // abstract
  1382. updateResults: function (initial) {
  1383. var search = this.search,
  1384. results = this.results,
  1385. opts = this.opts,
  1386. data,
  1387. self = this,
  1388. input,
  1389. term = search.val(),
  1390. lastTerm = $.data(this.container, "select2-last-term"),
  1391. // sequence number used to drop out-of-order responses
  1392. queryNumber;
  1393. // prevent duplicate queries against the same term
  1394. if (initial !== true && lastTerm && equal(term, lastTerm)) return;
  1395. $.data(this.container, "select2-last-term", term);
  1396. // if the search is currently hidden we do not alter the results
  1397. if (initial !== true && (this.showSearchInput === false || !this.opened())) {
  1398. return;
  1399. }
  1400. function postRender() {
  1401. search.removeClass("select2-active");
  1402. self.positionDropdown();
  1403. if (results.find('.select2-no-results,.select2-selection-limit,.select2-searching').length) {
  1404. self.liveRegion.text(results.text());
  1405. }
  1406. else {
  1407. self.liveRegion.text(self.opts.formatMatches(results.find('.select2-result-selectable').length));
  1408. }
  1409. }
  1410. function render(html) {
  1411. results.html(html);
  1412. postRender();
  1413. }
  1414. queryNumber = ++this.queryCount;
  1415. var maxSelSize = this.getMaximumSelectionSize();
  1416. if (maxSelSize >=1) {
  1417. data = this.data();
  1418. if ($.isArray(data) && data.length >= maxSelSize && checkFormatter(opts.formatSelectionTooBig, "formatSelectionTooBig")) {
  1419. render("<li class='select2-selection-limit'>" + evaluate(opts.formatSelectionTooBig, opts.element, maxSelSize) + "</li>");
  1420. return;
  1421. }
  1422. }
  1423. if (search.val().length < opts.minimumInputLength) {
  1424. if (checkFormatter(opts.formatInputTooShort, "formatInputTooShort")) {
  1425. render("<li class='select2-no-results'>" + evaluate(opts.formatInputTooShort, opts.element, search.val(), opts.minimumInputLength) + "</li>");
  1426. } else {
  1427. render("");
  1428. }
  1429. if (initial && this.showSearch) this.showSearch(true);
  1430. return;
  1431. }
  1432. if (opts.maximumInputLength && search.val().length > opts.maximumInputLength) {
  1433. if (checkFormatter(opts.formatInputTooLong, "formatInputTooLong")) {
  1434. render("<li class='select2-no-results'>" + evaluate(opts.formatInputTooLong, opts.element, search.val(), opts.maximumInputLength) + "</li>");
  1435. } else {
  1436. render("");
  1437. }
  1438. return;
  1439. }
  1440. if (opts.formatSearching && this.findHighlightableChoices().length === 0) {
  1441. render("<li class='select2-searching'>" + evaluate(opts.formatSearching, opts.element) + "</li>");
  1442. }
  1443. search.addClass("select2-active");
  1444. this.removeHighlight();
  1445. // give the tokenizer a chance to pre-process the input
  1446. input = this.tokenize();
  1447. if (input != undefined && input != null) {
  1448. search.val(input);
  1449. }
  1450. this.resultsPage = 1;
  1451. opts.query({
  1452. element: opts.element,
  1453. term: search.val(),
  1454. page: this.resultsPage,
  1455. context: null,
  1456. matcher: opts.matcher,
  1457. callback: this.bind(function (data) {
  1458. var def; // default choice
  1459. // ignore old responses
  1460. if (queryNumber != this.queryCount) {
  1461. return;
  1462. }
  1463. // ignore a response if the select2 has been closed before it was received
  1464. if (!this.opened()) {
  1465. this.search.removeClass("select2-active");
  1466. return;
  1467. }
  1468. // save context, if any
  1469. this.context = (data.context===undefined) ? null : data.context;
  1470. // create a default choice and prepend it to the list
  1471. if (this.opts.createSearchChoice && search.val() !== "") {
  1472. def = this.opts.createSearchChoice.call(self, search.val(), data.results);
  1473. if (def !== undefined && def !== null && self.id(def) !== undefined && self.id(def) !== null) {
  1474. if ($(data.results).filter(
  1475. function () {
  1476. return equal(self.id(this), self.id(def));
  1477. }).length === 0) {
  1478. this.opts.createSearchChoicePosition(data.results, def);
  1479. }
  1480. }
  1481. }
  1482. if (data.results.length === 0 && checkFormatter(opts.formatNoMatches, "formatNoMatches")) {
  1483. render("<li class='select2-no-results'>" + evaluate(opts.formatNoMatches, opts.element, search.val()) + "</li>");
  1484. return;
  1485. }
  1486. results.empty();
  1487. self.opts.populateResults.call(this, results, data.results, {term: search.val(), page: this.resultsPage, context:null});
  1488. if (data.more === true && checkFormatter(opts.formatLoadMore, "formatLoadMore")) {
  1489. results.append("<li class='select2-more-results'>" + opts.escapeMarkup(evaluate(opts.formatLoadMore, opts.element, this.resultsPage)) + "</li>");
  1490. window.setTimeout(function() { self.loadMoreIfNeeded(); }, 10);
  1491. }
  1492. this.postprocessResults(data, initial);
  1493. postRender();
  1494. this.opts.element.trigger({ type: "select2-loaded", items: data });
  1495. })});
  1496. },
  1497. // abstract
  1498. cancel: function () {
  1499. this.close();
  1500. },
  1501. // abstract
  1502. blur: function () {
  1503. // if selectOnBlur == true, select the currently highlighted option
  1504. if (this.opts.selectOnBlur)
  1505. this.selectHighlighted({noFocus: true});
  1506. this.close();
  1507. this.container.removeClass("select2-container-active");
  1508. // synonymous to .is(':focus'), which is available in jquery >= 1.6
  1509. if (this.search[0] === document.activeElement) { this.search.blur(); }
  1510. this.clearSearch();
  1511. this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
  1512. },
  1513. // abstract
  1514. focusSearch: function () {
  1515. focus(this.search);
  1516. },
  1517. // abstract
  1518. selectHighlighted: function (options) {
  1519. if (this._touchMoved) {
  1520. this.clearTouchMoved();
  1521. return;
  1522. }
  1523. var index=this.highlight(),
  1524. highlighted=this.results.find(".select2-highlighted"),
  1525. data = highlighted.closest('.select2-result').data("select2-data");
  1526. if (data) {
  1527. this.highlight(index);
  1528. this.onSelect(data, options);
  1529. } else if (options && options.noFocus) {
  1530. this.close();
  1531. }
  1532. },
  1533. // abstract
  1534. getPlaceholder: function () {
  1535. var placeholderOption;
  1536. return this.opts.element.attr("placeholder") ||
  1537. this.opts.element.attr("data-placeholder") || // jquery 1.4 compat
  1538. this.opts.element.data("placeholder") ||
  1539. this.opts.placeholder ||
  1540. ((placeholderOption = this.getPlaceholderOption()) !== undefined ? placeholderOption.text() : undefined);
  1541. },
  1542. // abstract
  1543. getPlaceholderOption: function() {
  1544. if (this.select) {
  1545. var firstOption = this.select.children('option').first();
  1546. if (this.opts.placeholderOption !== undefined ) {
  1547. //Determine the placeholder option based on the specified placeholderOption setting
  1548. return (this.opts.placeholderOption === "first" && firstOption) ||
  1549. (typeof this.opts.placeholderOption === "function" && this.opts.placeholderOption(this.select));
  1550. } else if ($.trim(firstOption.text()) === "" && firstOption.val() === "") {
  1551. //No explicit placeholder option specified, use the first if it's blank
  1552. return firstOption;
  1553. }
  1554. }
  1555. },
  1556. /**
  1557. * Get the desired width for the container element. This is
  1558. * derived first from option `width` passed to select2, then
  1559. * the inline 'style' on the original element, and finally
  1560. * falls back to the jQuery calculated element width.
  1561. */
  1562. // abstract
  1563. initContainerWidth: function () {
  1564. function resolveContainerWidth() {
  1565. var style, attrs, matches, i, l, attr;
  1566. if (this.opts.width === "off") {
  1567. return null;
  1568. } else if (this.opts.width === "element"){
  1569. return this.opts.element.outerWidth(false) === 0 ? 'auto' : this.opts.element.outerWidth(false) + 'px';
  1570. } else if (this.opts.width === "copy" || this.opts.width === "resolve") {
  1571. // check if there is inline style on the element that contains width
  1572. style = this.opts.element.attr('style');
  1573. if (style !== undefined) {
  1574. attrs = style.split(';');
  1575. for (i = 0, l = attrs.length; i < l; i = i + 1) {
  1576. attr = attrs[i].replace(/\s/g, '');
  1577. matches = attr.match(/^width:(([-+]?([0-9]*\.)?[0-9]+)(px|em|ex|%|in|cm|mm|pt|pc))/i);
  1578. if (matches !== null && matches.length >= 1)
  1579. return matches[1];
  1580. }
  1581. }
  1582. if (this.opts.width === "resolve") {
  1583. // next check if css('width') can resolve a width that is percent based, this is sometimes possible
  1584. // when attached to input type=hidden or elements hidden via css
  1585. style = this.opts.element.css('width');
  1586. if (style.indexOf("%") > 0) return style;
  1587. // finally, fallback on the calculated width of the element
  1588. return (this.opts.element.outerWidth(false) === 0 ? 'auto' : this.opts.element.outerWidth(false) + 'px');
  1589. }
  1590. return null;
  1591. } else if ($.isFunction(this.opts.width)) {
  1592. return this.opts.width();
  1593. } else {
  1594. return this.opts.width;
  1595. }
  1596. };
  1597. var width = resolveContainerWidth.call(this);
  1598. if (width !== null) {
  1599. this.container.css("width", width);
  1600. }
  1601. }
  1602. });
  1603. SingleSelect2 = clazz(AbstractSelect2, {
  1604. // single
  1605. createContainer: function () {
  1606. var container = $(document.createElement("div")).attr({
  1607. "class": "select2-container"
  1608. }).html([
  1609. "<a href='javascript:void(0)' class='select2-choice' tabindex='-1'>",
  1610. " <span class='select2-chosen'>&#160;</span><abbr class='select2-search-choice-close'></abbr>",
  1611. " <span class='select2-arrow' role='presentation'><b role='presentation'></b></span>",
  1612. "</a>",
  1613. "<label for='' class='select2-offscreen'></label>",
  1614. "<input class='select2-focusser select2-offscreen' type='text' aria-haspopup='true' role='button' />",
  1615. "<div class='select2-drop select2-display-none'>",
  1616. " <div class='select2-search'>",
  1617. " <label for='' class='select2-offscreen'></label>",
  1618. " <input type='text' autocomplete='off' autocorrect='off' autocapitalize='off' spellcheck='false' class='select2-input' role='combobox' aria-expanded='true'",
  1619. " aria-autocomplete='list' />",
  1620. " </div>",
  1621. " <ul class='select2-results' role='listbox'>",
  1622. " </ul>",
  1623. "</div>"].join(""));
  1624. return container;
  1625. },
  1626. // single
  1627. enableInterface: function() {
  1628. if (this.parent.enableInterface.apply(this, arguments)) {
  1629. this.focusser.prop("disabled", !this.isInterfaceEnabled());
  1630. }
  1631. },
  1632. // single
  1633. opening: function () {
  1634. var el, range, len;
  1635. if (this.opts.minimumResultsForSearch >= 0) {
  1636. this.showSearch(true);
  1637. }
  1638. this.parent.opening.apply(this, arguments);
  1639. if (this.showSearchInput !== false) {
  1640. // IE appends focusser.val() at the end of field :/ so we manually insert it at the beginning using a range
  1641. // all other browsers handle this just fine
  1642. this.search.val(this.focusser.val());
  1643. }
  1644. if (this.opts.shouldFocusInput(this)) {
  1645. this.search.focus();
  1646. // move the cursor to the end after focussing, otherwise it will be at the beginning and
  1647. // new text will appear *before* focusser.val()
  1648. el = this.search.get(0);
  1649. if (el.createTextRange) {
  1650. range = el.createTextRange();
  1651. range.collapse(false);
  1652. range.select();
  1653. } else if (el.setSelectionRange) {
  1654. len = this.search.val().length;
  1655. el.setSelectionRange(len, len);
  1656. }
  1657. }
  1658. // initializes search's value with nextSearchTerm (if defined by user)
  1659. // ignore nextSearchTerm if the dropdown is opened by the user pressing a letter
  1660. if(this.search.val() === "") {
  1661. if(this.nextSearchTerm != undefined){
  1662. this.search.val(this.nextSearchTerm);
  1663. this.search.select();
  1664. }
  1665. }
  1666. this.focusser.prop("disabled", true).val("");
  1667. this.updateResults(true);
  1668. this.opts.element.trigger($.Event("select2-open"));
  1669. },
  1670. // single
  1671. close: function () {
  1672. if (!this.opened()) return;
  1673. this.parent.close.apply(this, arguments);
  1674. this.focusser.prop("disabled", false);
  1675. if (this.opts.shouldFocusInput(this)) {
  1676. this.focusser.focus();
  1677. }
  1678. },
  1679. // single
  1680. focus: function () {
  1681. if (this.opened()) {
  1682. this.close();
  1683. } else {
  1684. this.focusser.prop("disabled", false);
  1685. if (this.opts.shouldFocusInput(this)) {
  1686. this.focusser.focus();
  1687. }
  1688. }
  1689. },
  1690. // single
  1691. isFocused: function () {
  1692. return this.container.hasClass("select2-container-active");
  1693. },
  1694. // single
  1695. cancel: function () {
  1696. this.parent.cancel.apply(this, arguments);
  1697. this.focusser.prop("disabled", false);
  1698. if (this.opts.shouldFocusInput(this)) {
  1699. this.focusser.focus();
  1700. }
  1701. },
  1702. // single
  1703. destroy: function() {
  1704. $("label[for='" + this.focusser.attr('id') + "']")
  1705. .attr('for', this.opts.element.attr("id"));
  1706. this.parent.destroy.apply(this, arguments);
  1707. cleanupJQueryElements.call(this,
  1708. "selection",
  1709. "focusser"
  1710. );
  1711. },
  1712. // single
  1713. initContainer: function () {
  1714. var selection,
  1715. container = this.container,
  1716. dropdown = this.dropdown,
  1717. idSuffix = nextUid(),
  1718. elementLabel;
  1719. if (this.opts.minimumResultsForSearch < 0) {
  1720. this.showSearch(false);
  1721. } else {
  1722. this.showSearch(true);
  1723. }
  1724. this.selection = selection = container.find(".select2-choice");
  1725. this.focusser = container.find(".select2-focusser");
  1726. // add aria associations
  1727. selection.find(".select2-chosen").attr("id", "select2-chosen-"+idSuffix);
  1728. this.focusser.attr("aria-labelledby", "select2-chosen-"+idSuffix);
  1729. this.results.attr("id", "select2-results-"+idSuffix);
  1730. this.search.attr("aria-owns", "select2-results-"+idSuffix);
  1731. // rewrite labels from original element to focusser
  1732. this.focusser.attr("id", "s2id_autogen"+idSuffix);
  1733. elementLabel = $("label[for='" + this.opts.element.attr("id") + "']");
  1734. this.focusser.prev()
  1735. .text(elementLabel.text())
  1736. .attr('for', this.focusser.attr('id'));
  1737. // Ensure the original element retains an accessible name
  1738. var originalTitle = this.opts.element.attr("title");
  1739. this.opts.element.attr("title", (originalTitle || elementLabel.text()));
  1740. this.focusser.attr("tabindex", this.elementTabIndex);
  1741. // write label for search field using the label from the focusser element
  1742. this.search.attr("id", this.focusser.attr('id') + '_search');
  1743. this.search.prev()
  1744. .text($("label[for='" + this.focusser.attr('id') + "']").text())
  1745. .attr('for', this.search.attr('id'));
  1746. this.search.on("keydown", this.bind(function (e) {
  1747. if (!this.isInterfaceEnabled()) return;
  1748. if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN) {
  1749. // prevent the page from scrolling
  1750. killEvent(e);
  1751. return;
  1752. }
  1753. switch (e.which) {
  1754. case KEY.UP:
  1755. case KEY.DOWN:
  1756. this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
  1757. killEvent(e);
  1758. return;
  1759. case KEY.ENTER:
  1760. this.selectHighlighted();
  1761. killEvent(e);
  1762. return;
  1763. case KEY.TAB:
  1764. this.selectHighlighted({noFocus: true});
  1765. return;
  1766. case KEY.ESC:
  1767. this.cancel(e);
  1768. killEvent(e);
  1769. return;
  1770. }
  1771. }));
  1772. this.search.on("blur", this.bind(function(e) {
  1773. // a workaround for chrome to keep the search field focussed when the scroll bar is used to scroll the dropdown.
  1774. // without this the search field loses focus which is annoying
  1775. if (document.activeElement === this.body.get(0)) {
  1776. window.setTimeout(this.bind(function() {
  1777. if (this.opened()) {
  1778. this.search.focus();
  1779. }
  1780. }), 0);
  1781. }
  1782. }));
  1783. this.focusser.on("keydown", this.bind(function (e) {
  1784. if (!this.isInterfaceEnabled()) return;
  1785. if (e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e) || e.which === KEY.ESC) {
  1786. return;
  1787. }
  1788. if (this.opts.openOnEnter === false && e.which === KEY.ENTER) {
  1789. killEvent(e);
  1790. return;
  1791. }
  1792. if (e.which == KEY.DOWN || e.which == KEY.UP
  1793. || (e.which == KEY.ENTER && this.opts.openOnEnter)) {
  1794. if (e.altKey || e.ctrlKey || e.shiftKey || e.metaKey) return;
  1795. this.open();
  1796. killEvent(e);
  1797. return;
  1798. }
  1799. if (e.which == KEY.DELETE || e.which == KEY.BACKSPACE) {
  1800. if (this.opts.allowClear) {
  1801. this.clear();
  1802. }
  1803. killEvent(e);
  1804. return;
  1805. }
  1806. }));
  1807. installKeyUpChangeEvent(this.focusser);
  1808. this.focusser.on("keyup-change input", this.bind(function(e) {
  1809. if (this.opts.minimumResultsForSearch >= 0) {
  1810. e.stopPropagation();
  1811. if (this.opened()) return;
  1812. this.open();
  1813. }
  1814. }));
  1815. selection.on("mousedown touchstart", "abbr", this.bind(function (e) {
  1816. if (!this.isInterfaceEnabled()) return;
  1817. this.clear();
  1818. killEventImmediately(e);
  1819. this.close();
  1820. this.selection.focus();
  1821. }));
  1822. selection.on("mousedown touchstart", this.bind(function (e) {
  1823. // Prevent IE from generating a click event on the body
  1824. reinsertElement(selection);
  1825. if (!this.container.hasClass("select2-container-active")) {
  1826. this.opts.element.trigger($.Event("select2-focus"));
  1827. }
  1828. if (this.opened()) {
  1829. this.close();
  1830. } else if (this.isInterfaceEnabled()) {
  1831. this.open();
  1832. }
  1833. killEvent(e);
  1834. }));
  1835. dropdown.on("mousedown touchstart", this.bind(function() {
  1836. if (this.opts.shouldFocusInput(this)) {
  1837. this.search.focus();
  1838. }
  1839. }));
  1840. selection.on("focus", this.bind(function(e) {
  1841. killEvent(e);
  1842. }));
  1843. this.focusser.on("focus", this.bind(function(){
  1844. if (!this.container.hasClass("select2-container-active")) {
  1845. this.opts.element.trigger($.Event("select2-focus"));
  1846. }
  1847. this.container.addClass("select2-container-active");
  1848. })).on("blur", this.bind(function() {
  1849. if (!this.opened()) {
  1850. this.container.removeClass("select2-container-active");
  1851. this.opts.element.trigger($.Event("select2-blur"));
  1852. }
  1853. }));
  1854. this.search.on("focus", this.bind(function(){
  1855. if (!this.container.hasClass("select2-container-active")) {
  1856. this.opts.element.trigger($.Event("select2-focus"));
  1857. }
  1858. this.container.addClass("select2-container-active");
  1859. }));
  1860. this.initContainerWidth();
  1861. this.opts.element.addClass("select2-offscreen");
  1862. this.setPlaceholder();
  1863. },
  1864. // single
  1865. clear: function(triggerChange) {
  1866. var data=this.selection.data("select2-data");
  1867. if (data) { // guard against queued quick consecutive clicks
  1868. var evt = $.Event("select2-clearing");
  1869. this.opts.element.trigger(evt);
  1870. if (evt.isDefaultPrevented()) {
  1871. return;
  1872. }
  1873. var placeholderOption = this.getPlaceholderOption();
  1874. this.opts.element.val(placeholderOption ? placeholderOption.val() : "");
  1875. this.selection.find(".select2-chosen").empty();
  1876. this.selection.removeData("select2-data");
  1877. this.setPlaceholder();
  1878. if (triggerChange !== false){
  1879. this.opts.element.trigger({ type: "select2-removed", val: this.id(data), choice: data });
  1880. this.triggerChange({removed:data});
  1881. }
  1882. }
  1883. },
  1884. /**
  1885. * Sets selection based on source element's value
  1886. */
  1887. // single
  1888. initSelection: function () {
  1889. var selected;
  1890. if (this.isPlaceholderOptionSelected()) {
  1891. this.updateSelection(null);
  1892. this.close();
  1893. this.setPlaceholder();
  1894. } else {
  1895. var self = this;
  1896. this.opts.initSelection.call(null, this.opts.element, function(selected){
  1897. if (selected !== undefined && selected !== null) {
  1898. self.updateSelection(selected);
  1899. self.close();
  1900. self.setPlaceholder();
  1901. self.nextSearchTerm = self.opts.nextSearchTerm(selected, self.search.val());
  1902. }
  1903. });
  1904. }
  1905. },
  1906. isPlaceholderOptionSelected: function() {
  1907. var placeholderOption;
  1908. if (this.getPlaceholder() === undefined) return false; // no placeholder specified so no option should be considered
  1909. return ((placeholderOption = this.getPlaceholderOption()) !== undefined && placeholderOption.prop("selected"))
  1910. || (this.opts.element.val() === "")
  1911. || (this.opts.element.val() === undefined)
  1912. || (this.opts.element.val() === null);
  1913. },
  1914. // single
  1915. prepareOpts: function () {
  1916. var opts = this.parent.prepareOpts.apply(this, arguments),
  1917. self=this;
  1918. if (opts.element.get(0).tagName.toLowerCase() === "select") {
  1919. // install the selection initializer
  1920. opts.initSelection = function (element, callback) {
  1921. var selected = element.find("option").filter(function() { return this.selected && !this.disabled });
  1922. // a single select box always has a value, no need to null check 'selected'
  1923. callback(self.optionToData(selected));
  1924. };
  1925. } else if ("data" in opts) {
  1926. // install default initSelection when applied to hidden input and data is local
  1927. opts.initSelection = opts.initSelection || function (element, callback) {
  1928. var id = element.val();
  1929. //search in data by id, storing the actual matching item
  1930. var match = null;
  1931. opts.query({
  1932. matcher: function(term, text, el){
  1933. var is_match = equal(id, opts.id(el));
  1934. if (is_match) {
  1935. match = el;
  1936. }
  1937. return is_match;
  1938. },
  1939. callback: !$.isFunction(callback) ? $.noop : function() {
  1940. callback(match);
  1941. }
  1942. });
  1943. };
  1944. }
  1945. return opts;
  1946. },
  1947. // single
  1948. getPlaceholder: function() {
  1949. // if a placeholder is specified on a single select without a valid placeholder option ignore it
  1950. if (this.select) {
  1951. if (this.getPlaceholderOption() === undefined) {
  1952. return undefined;
  1953. }
  1954. }
  1955. return this.parent.getPlaceholder.apply(this, arguments);
  1956. },
  1957. // single
  1958. setPlaceholder: function () {
  1959. var placeholder = this.getPlaceholder();
  1960. if (this.isPlaceholderOptionSelected() && placeholder !== undefined) {
  1961. // check for a placeholder option if attached to a select
  1962. if (this.select && this.getPlaceholderOption() === undefined) return;
  1963. this.selection.find(".select2-chosen").html(this.opts.escapeMarkup(placeholder));
  1964. this.selection.addClass("select2-default");
  1965. this.container.removeClass("select2-allowclear");
  1966. }
  1967. },
  1968. // single
  1969. postprocessResults: function (data, initial, noHighlightUpdate) {
  1970. var selected = 0, self = this, showSearchInput = true;
  1971. // find the selected element in the result list
  1972. this.findHighlightableChoices().each2(function (i, elm) {
  1973. if (equal(self.id(elm.data("select2-data")), self.opts.element.val())) {
  1974. selected = i;
  1975. return false;
  1976. }
  1977. });
  1978. // and highlight it
  1979. if (noHighlightUpdate !== false) {
  1980. if (initial === true && selected >= 0) {
  1981. this.highlight(selected);
  1982. } else {
  1983. this.highlight(0);
  1984. }
  1985. }
  1986. // hide the search box if this is the first we got the results and there are enough of them for search
  1987. if (initial === true) {
  1988. var min = this.opts.minimumResultsForSearch;
  1989. if (min >= 0) {
  1990. this.showSearch(countResults(data.results) >= min);
  1991. }
  1992. }
  1993. },
  1994. // single
  1995. showSearch: function(showSearchInput) {
  1996. if (this.showSearchInput === showSearchInput) return;
  1997. this.showSearchInput = showSearchInput;
  1998. this.dropdown.find(".select2-search").toggleClass("select2-search-hidden", !showSearchInput);
  1999. this.dropdown.find(".select2-search").toggleClass("select2-offscreen", !showSearchInput);
  2000. //add "select2-with-searchbox" to the container if search box is shown
  2001. $(this.dropdown, this.container).toggleClass("select2-with-searchbox", showSearchInput);
  2002. },
  2003. // single
  2004. onSelect: function (data, options) {
  2005. if (!this.triggerSelect(data)) { return; }
  2006. var old = this.opts.element.val(),
  2007. oldData = this.data();
  2008. this.opts.element.val(this.id(data));
  2009. this.updateSelection(data);
  2010. this.opts.element.trigger({ type: "select2-selected", val: this.id(data), choice: data });
  2011. this.nextSearchTerm = this.opts.nextSearchTerm(data, this.search.val());
  2012. this.close();
  2013. if ((!options || !options.noFocus) && this.opts.shouldFocusInput(this)) {
  2014. this.focusser.focus();
  2015. }
  2016. if (!equal(old, this.id(data))) {
  2017. this.triggerChange({ added: data, removed: oldData });
  2018. }
  2019. },
  2020. // single
  2021. updateSelection: function (data) {
  2022. var container=this.selection.find(".select2-chosen"), formatted, cssClass;
  2023. this.selection.data("select2-data", data);
  2024. container.empty();
  2025. if (data !== null) {
  2026. formatted=this.opts.formatSelection(data, container, this.opts.escapeMarkup);
  2027. }
  2028. if (formatted !== undefined) {
  2029. container.append(formatted);
  2030. }
  2031. cssClass=this.opts.formatSelectionCssClass(data, container);
  2032. if (cssClass !== undefined) {
  2033. container.addClass(cssClass);
  2034. }
  2035. this.selection.removeClass("select2-default");
  2036. if (this.opts.allowClear && this.getPlaceholder() !== undefined) {
  2037. this.container.addClass("select2-allowclear");
  2038. }
  2039. },
  2040. // single
  2041. val: function () {
  2042. var val,
  2043. triggerChange = false,
  2044. data = null,
  2045. self = this,
  2046. oldData = this.data();
  2047. if (arguments.length === 0) {
  2048. return this.opts.element.val();
  2049. }
  2050. val = arguments[0];
  2051. if (arguments.length > 1) {
  2052. triggerChange = arguments[1];
  2053. }
  2054. if (this.select) {
  2055. this.select
  2056. .val(val)
  2057. .find("option").filter(function() { return this.selected }).each2(function (i, elm) {
  2058. data = self.optionToData(elm);
  2059. return false;
  2060. });
  2061. this.updateSelection(data);
  2062. this.setPlaceholder();
  2063. if (triggerChange) {
  2064. this.triggerChange({added: data, removed:oldData});
  2065. }
  2066. } else {
  2067. // val is an id. !val is true for [undefined,null,'',0] - 0 is legal
  2068. if (!val && val !== 0) {
  2069. this.clear(triggerChange);
  2070. return;
  2071. }
  2072. if (this.opts.initSelection === undefined) {
  2073. throw new Error("cannot call val() if initSelection() is not defined");
  2074. }
  2075. this.opts.element.val(val);
  2076. this.opts.initSelection(this.opts.element, function(data){
  2077. self.opts.element.val(!data ? "" : self.id(data));
  2078. self.updateSelection(data);
  2079. self.setPlaceholder();
  2080. if (triggerChange) {
  2081. self.triggerChange({added: data, removed:oldData});
  2082. }
  2083. });
  2084. }
  2085. },
  2086. // single
  2087. clearSearch: function () {
  2088. this.search.val("");
  2089. this.focusser.val("");
  2090. },
  2091. // single
  2092. data: function(value) {
  2093. var data,
  2094. triggerChange = false;
  2095. if (arguments.length === 0) {
  2096. data = this.selection.data("select2-data");
  2097. if (data == undefined) data = null;
  2098. return data;
  2099. } else {
  2100. if (arguments.length > 1) {
  2101. triggerChange = arguments[1];
  2102. }
  2103. if (!value) {
  2104. this.clear(triggerChange);
  2105. } else {
  2106. data = this.data();
  2107. this.opts.element.val(!value ? "" : this.id(value));
  2108. this.updateSelection(value);
  2109. if (triggerChange) {
  2110. this.triggerChange({added: value, removed:data});
  2111. }
  2112. }
  2113. }
  2114. }
  2115. });
  2116. MultiSelect2 = clazz(AbstractSelect2, {
  2117. // multi
  2118. createContainer: function () {
  2119. var container = $(document.createElement("div")).attr({
  2120. "class": "select2-container select2-container-multi"
  2121. }).html([
  2122. "<ul class='select2-choices'>",
  2123. " <li class='select2-search-field'>",
  2124. " <label for='' class='select2-offscreen'></label>",
  2125. " <input type='text' autocomplete='off' autocorrect='off' autocapitalize='off' spellcheck='false' class='select2-input'>",
  2126. " </li>",
  2127. "</ul>",
  2128. "<div class='select2-drop select2-drop-multi select2-display-none'>",
  2129. " <ul class='select2-results'>",
  2130. " </ul>",
  2131. "</div>"].join(""));
  2132. return container;
  2133. },
  2134. // multi
  2135. prepareOpts: function () {
  2136. var opts = this.parent.prepareOpts.apply(this, arguments),
  2137. self=this;
  2138. // TODO validate placeholder is a string if specified
  2139. if (opts.element.get(0).tagName.toLowerCase() === "select") {
  2140. // install the selection initializer
  2141. opts.initSelection = function (element, callback) {
  2142. var data = [];
  2143. element.find("option").filter(function() { return this.selected && !this.disabled }).each2(function (i, elm) {
  2144. data.push(self.optionToData(elm));
  2145. });
  2146. callback(data);
  2147. };
  2148. } else if ("data" in opts) {
  2149. // install default initSelection when applied to hidden input and data is local
  2150. opts.initSelection = opts.initSelection || function (element, callback) {
  2151. var ids = splitVal(element.val(), opts.separator);
  2152. //search in data by array of ids, storing matching items in a list
  2153. var matches = [];
  2154. opts.query({
  2155. matcher: function(term, text, el){
  2156. var is_match = $.grep(ids, function(id) {
  2157. return equal(id, opts.id(el));
  2158. }).length;
  2159. if (is_match) {
  2160. matches.push(el);
  2161. }
  2162. return is_match;
  2163. },
  2164. callback: !$.isFunction(callback) ? $.noop : function() {
  2165. // reorder matches based on the order they appear in the ids array because right now
  2166. // they are in the order in which they appear in data array
  2167. var ordered = [];
  2168. for (var i = 0; i < ids.length; i++) {
  2169. var id = ids[i];
  2170. for (var j = 0; j < matches.length; j++) {
  2171. var match = matches[j];
  2172. if (equal(id, opts.id(match))) {
  2173. ordered.push(match);
  2174. matches.splice(j, 1);
  2175. break;
  2176. }
  2177. }
  2178. }
  2179. callback(ordered);
  2180. }
  2181. });
  2182. };
  2183. }
  2184. return opts;
  2185. },
  2186. // multi
  2187. selectChoice: function (choice) {
  2188. var selected = this.container.find(".select2-search-choice-focus");
  2189. if (selected.length && choice && choice[0] == selected[0]) {
  2190. } else {
  2191. if (selected.length) {
  2192. this.opts.element.trigger("choice-deselected", selected);
  2193. }
  2194. selected.removeClass("select2-search-choice-focus");
  2195. if (choice && choice.length) {
  2196. this.close();
  2197. choice.addClass("select2-search-choice-focus");
  2198. this.opts.element.trigger("choice-selected", choice);
  2199. }
  2200. }
  2201. },
  2202. // multi
  2203. destroy: function() {
  2204. $("label[for='" + this.search.attr('id') + "']")
  2205. .attr('for', this.opts.element.attr("id"));
  2206. this.parent.destroy.apply(this, arguments);
  2207. cleanupJQueryElements.call(this,
  2208. "searchContainer",
  2209. "selection"
  2210. );
  2211. },
  2212. // multi
  2213. initContainer: function () {
  2214. var selector = ".select2-choices", selection;
  2215. this.searchContainer = this.container.find(".select2-search-field");
  2216. this.selection = selection = this.container.find(selector);
  2217. var _this = this;
  2218. this.selection.on("click", ".select2-search-choice:not(.select2-locked)", function (e) {
  2219. //killEvent(e);
  2220. _this.search[0].focus();
  2221. _this.selectChoice($(this));
  2222. });
  2223. // rewrite labels from original element to focusser
  2224. this.search.attr("id", "s2id_autogen"+nextUid());
  2225. this.search.prev()
  2226. .text($("label[for='" + this.opts.element.attr("id") + "']").text())
  2227. .attr('for', this.search.attr('id'));
  2228. this.search.on("input paste", this.bind(function() {
  2229. if (this.search.attr('placeholder') && this.search.val().length == 0) return;
  2230. if (!this.isInterfaceEnabled()) return;
  2231. if (!this.opened()) {
  2232. this.open();
  2233. }
  2234. }));
  2235. this.search.attr("tabindex", this.elementTabIndex);
  2236. this.keydowns = 0;
  2237. this.search.on("keydown", this.bind(function (e) {
  2238. if (!this.isInterfaceEnabled()) return;
  2239. ++this.keydowns;
  2240. var selected = selection.find(".select2-search-choice-focus");
  2241. var prev = selected.prev(".select2-search-choice:not(.select2-locked)");
  2242. var next = selected.next(".select2-search-choice:not(.select2-locked)");
  2243. var pos = getCursorInfo(this.search);
  2244. if (selected.length &&
  2245. (e.which == KEY.LEFT || e.which == KEY.RIGHT || e.which == KEY.BACKSPACE || e.which == KEY.DELETE || e.which == KEY.ENTER)) {
  2246. var selectedChoice = selected;
  2247. if (e.which == KEY.LEFT && prev.length) {
  2248. selectedChoice = prev;
  2249. }
  2250. else if (e.which == KEY.RIGHT) {
  2251. selectedChoice = next.length ? next : null;
  2252. }
  2253. else if (e.which === KEY.BACKSPACE) {
  2254. if (this.unselect(selected.first())) {
  2255. this.search.width(10);
  2256. selectedChoice = prev.length ? prev : next;
  2257. }
  2258. } else if (e.which == KEY.DELETE) {
  2259. if (this.unselect(selected.first())) {
  2260. this.search.width(10);
  2261. selectedChoice = next.length ? next : null;
  2262. }
  2263. } else if (e.which == KEY.ENTER) {
  2264. selectedChoice = null;
  2265. }
  2266. this.selectChoice(selectedChoice);
  2267. killEvent(e);
  2268. if (!selectedChoice || !selectedChoice.length) {
  2269. this.open();
  2270. }
  2271. return;
  2272. } else if (((e.which === KEY.BACKSPACE && this.keydowns == 1)
  2273. || e.which == KEY.LEFT) && (pos.offset == 0 && !pos.length)) {
  2274. this.selectChoice(selection.find(".select2-search-choice:not(.select2-locked)").last());
  2275. killEvent(e);
  2276. return;
  2277. } else {
  2278. this.selectChoice(null);
  2279. }
  2280. if (this.opened()) {
  2281. switch (e.which) {
  2282. case KEY.UP:
  2283. case KEY.DOWN:
  2284. this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
  2285. killEvent(e);
  2286. return;
  2287. case KEY.ENTER:
  2288. this.selectHighlighted();
  2289. killEvent(e);
  2290. return;
  2291. case KEY.TAB:
  2292. this.selectHighlighted({noFocus:true});
  2293. this.close();
  2294. return;
  2295. case KEY.ESC:
  2296. this.cancel(e);
  2297. killEvent(e);
  2298. return;
  2299. }
  2300. }
  2301. if (e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e)
  2302. || e.which === KEY.BACKSPACE || e.which === KEY.ESC) {
  2303. return;
  2304. }
  2305. if (e.which === KEY.ENTER) {
  2306. if (this.opts.openOnEnter === false) {
  2307. return;
  2308. } else if (e.altKey || e.ctrlKey || e.shiftKey || e.metaKey) {
  2309. return;
  2310. }
  2311. }
  2312. this.open();
  2313. if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN) {
  2314. // prevent the page from scrolling
  2315. killEvent(e);
  2316. }
  2317. if (e.which === KEY.ENTER) {
  2318. // prevent form from being submitted
  2319. killEvent(e);
  2320. }
  2321. }));
  2322. this.search.on("keyup", this.bind(function (e) {
  2323. this.keydowns = 0;
  2324. this.resizeSearch();
  2325. })
  2326. );
  2327. this.search.on("blur", this.bind(function(e) {
  2328. this.container.removeClass("select2-container-active");
  2329. this.search.removeClass("select2-focused");
  2330. this.selectChoice(null);
  2331. if (!this.opened()) this.clearSearch();
  2332. e.stopImmediatePropagation();
  2333. this.opts.element.trigger($.Event("select2-blur"));
  2334. }));
  2335. this.container.on("click", selector, this.bind(function (e) {
  2336. if (!this.isInterfaceEnabled()) return;
  2337. if ($(e.target).closest(".select2-search-choice").length > 0) {
  2338. // clicked inside a select2 search choice, do not open
  2339. return;
  2340. }
  2341. this.selectChoice(null);
  2342. this.clearPlaceholder();
  2343. if (!this.container.hasClass("select2-container-active")) {
  2344. this.opts.element.trigger($.Event("select2-focus"));
  2345. }
  2346. this.open();
  2347. this.focusSearch();
  2348. e.preventDefault();
  2349. }));
  2350. this.container.on("focus", selector, this.bind(function () {
  2351. if (!this.isInterfaceEnabled()) return;
  2352. if (!this.container.hasClass("select2-container-active")) {
  2353. this.opts.element.trigger($.Event("select2-focus"));
  2354. }
  2355. this.container.addClass("select2-container-active");
  2356. this.dropdown.addClass("select2-drop-active");
  2357. this.clearPlaceholder();
  2358. }));
  2359. this.initContainerWidth();
  2360. this.opts.element.addClass("select2-offscreen");
  2361. // set the placeholder if necessary
  2362. this.clearSearch();
  2363. },
  2364. // multi
  2365. enableInterface: function() {
  2366. if (this.parent.enableInterface.apply(this, arguments)) {
  2367. this.search.prop("disabled", !this.isInterfaceEnabled());
  2368. }
  2369. },
  2370. // multi
  2371. initSelection: function () {
  2372. var data;
  2373. if (this.opts.element.val() === "" && this.opts.element.text() === "") {
  2374. this.updateSelection([]);
  2375. this.close();
  2376. // set the placeholder if necessary
  2377. this.clearSearch();
  2378. }
  2379. if (this.select || this.opts.element.val() !== "") {
  2380. var self = this;
  2381. this.opts.initSelection.call(null, this.opts.element, function(data){
  2382. if (data !== undefined && data !== null) {
  2383. self.updateSelection(data);
  2384. self.close();
  2385. // set the placeholder if necessary
  2386. self.clearSearch();
  2387. }
  2388. });
  2389. }
  2390. },
  2391. // multi
  2392. clearSearch: function () {
  2393. var placeholder = this.getPlaceholder(),
  2394. maxWidth = this.getMaxSearchWidth();
  2395. if (placeholder !== undefined && this.getVal().length === 0 && this.search.hasClass("select2-focused") === false) {
  2396. this.search.val(placeholder).addClass("select2-default");
  2397. // stretch the search box to full width of the container so as much of the placeholder is visible as possible
  2398. // we could call this.resizeSearch(), but we do not because that requires a sizer and we do not want to create one so early because of a firefox bug, see #944
  2399. this.search.width(maxWidth > 0 ? maxWidth : this.container.css("width"));
  2400. } else {
  2401. this.search.val("").width(10);
  2402. }
  2403. },
  2404. // multi
  2405. clearPlaceholder: function () {
  2406. if (this.search.hasClass("select2-default")) {
  2407. this.search.val("").removeClass("select2-default");
  2408. }
  2409. },
  2410. // multi
  2411. opening: function () {
  2412. this.clearPlaceholder(); // should be done before super so placeholder is not used to search
  2413. this.resizeSearch();
  2414. this.parent.opening.apply(this, arguments);
  2415. this.focusSearch();
  2416. // initializes search's value with nextSearchTerm (if defined by user)
  2417. // ignore nextSearchTerm if the dropdown is opened by the user pressing a letter
  2418. if(this.search.val() === "") {
  2419. if(this.nextSearchTerm != undefined){
  2420. this.search.val(this.nextSearchTerm);
  2421. this.search.select();
  2422. }
  2423. }
  2424. this.updateResults(true);
  2425. if (this.opts.shouldFocusInput(this)) {
  2426. this.search.focus();
  2427. }
  2428. this.opts.element.trigger($.Event("select2-open"));
  2429. },
  2430. // multi
  2431. close: function () {
  2432. if (!this.opened()) return;
  2433. this.parent.close.apply(this, arguments);
  2434. },
  2435. // multi
  2436. focus: function () {
  2437. this.close();
  2438. this.search.focus();
  2439. },
  2440. // multi
  2441. isFocused: function () {
  2442. return this.search.hasClass("select2-focused");
  2443. },
  2444. // multi
  2445. updateSelection: function (data) {
  2446. var ids = [], filtered = [], self = this;
  2447. // filter out duplicates
  2448. $(data).each(function () {
  2449. if (indexOf(self.id(this), ids) < 0) {
  2450. ids.push(self.id(this));
  2451. filtered.push(this);
  2452. }
  2453. });
  2454. data = filtered;
  2455. this.selection.find(".select2-search-choice").remove();
  2456. $(data).each(function () {
  2457. self.addSelectedChoice(this);
  2458. });
  2459. self.postprocessResults();
  2460. },
  2461. // multi
  2462. tokenize: function() {
  2463. var input = this.search.val();
  2464. input = this.opts.tokenizer.call(this, input, this.data(), this.bind(this.onSelect), this.opts);
  2465. if (input != null && input != undefined) {
  2466. this.search.val(input);
  2467. if (input.length > 0) {
  2468. this.open();
  2469. }
  2470. }
  2471. },
  2472. // multi
  2473. onSelect: function (data, options) {
  2474. if (!this.triggerSelect(data)) { return; }
  2475. this.addSelectedChoice(data);
  2476. this.opts.element.trigger({ type: "selected", val: this.id(data), choice: data });
  2477. // keep track of the search's value before it gets cleared
  2478. this.nextSearchTerm = this.opts.nextSearchTerm(data, this.search.val());
  2479. this.clearSearch();
  2480. this.updateResults();
  2481. if (this.select || !this.opts.closeOnSelect) this.postprocessResults(data, false, this.opts.closeOnSelect===true);
  2482. if (this.opts.closeOnSelect) {
  2483. this.close();
  2484. this.search.width(10);
  2485. } else {
  2486. if (this.countSelectableResults()>0) {
  2487. this.search.width(10);
  2488. this.resizeSearch();
  2489. if (this.getMaximumSelectionSize() > 0 && this.val().length >= this.getMaximumSelectionSize()) {
  2490. // if we reached max selection size repaint the results so choices
  2491. // are replaced with the max selection reached message
  2492. this.updateResults(true);
  2493. } else {
  2494. // initializes search's value with nextSearchTerm and update search result
  2495. if(this.nextSearchTerm != undefined){
  2496. this.search.val(this.nextSearchTerm);
  2497. this.updateResults();
  2498. this.search.select();
  2499. }
  2500. }
  2501. this.positionDropdown();
  2502. } else {
  2503. // if nothing left to select close
  2504. this.close();
  2505. this.search.width(10);
  2506. }
  2507. }
  2508. // since its not possible to select an element that has already been
  2509. // added we do not need to check if this is a new element before firing change
  2510. this.triggerChange({ added: data });
  2511. if (!options || !options.noFocus)
  2512. this.focusSearch();
  2513. },
  2514. // multi
  2515. cancel: function () {
  2516. this.close();
  2517. this.focusSearch();
  2518. },
  2519. addSelectedChoice: function (data) {
  2520. var enableChoice = !data.locked,
  2521. enabledItem = $(
  2522. "<li class='select2-search-choice'>" +
  2523. " <div></div>" +
  2524. " <a href='#' class='select2-search-choice-close' tabindex='-1'></a>" +
  2525. "</li>"),
  2526. disabledItem = $(
  2527. "<li class='select2-search-choice select2-locked'>" +
  2528. "<div></div>" +
  2529. "</li>");
  2530. var choice = enableChoice ? enabledItem : disabledItem,
  2531. id = this.id(data),
  2532. val = this.getVal(),
  2533. formatted,
  2534. cssClass;
  2535. formatted=this.opts.formatSelection(data, choice.find("div"), this.opts.escapeMarkup);
  2536. if (formatted != undefined) {
  2537. choice.find("div").replaceWith("<div>"+formatted+"</div>");
  2538. }
  2539. cssClass=this.opts.formatSelectionCssClass(data, choice.find("div"));
  2540. if (cssClass != undefined) {
  2541. choice.addClass(cssClass);
  2542. }
  2543. if(enableChoice){
  2544. choice.find(".select2-search-choice-close")
  2545. .on("mousedown", killEvent)
  2546. .on("click dblclick", this.bind(function (e) {
  2547. if (!this.isInterfaceEnabled()) return;
  2548. this.unselect($(e.target));
  2549. this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
  2550. killEvent(e);
  2551. this.close();
  2552. this.focusSearch();
  2553. })).on("focus", this.bind(function () {
  2554. if (!this.isInterfaceEnabled()) return;
  2555. this.container.addClass("select2-container-active");
  2556. this.dropdown.addClass("select2-drop-active");
  2557. }));
  2558. }
  2559. choice.data("select2-data", data);
  2560. choice.insertBefore(this.searchContainer);
  2561. val.push(id);
  2562. this.setVal(val);
  2563. },
  2564. // multi
  2565. unselect: function (selected) {
  2566. var val = this.getVal(),
  2567. data,
  2568. index;
  2569. selected = selected.closest(".select2-search-choice");
  2570. if (selected.length === 0) {
  2571. throw "Invalid argument: " + selected + ". Must be .select2-search-choice";
  2572. }
  2573. data = selected.data("select2-data");
  2574. if (!data) {
  2575. // prevent a race condition when the 'x' is clicked really fast repeatedly the event can be queued
  2576. // and invoked on an element already removed
  2577. return;
  2578. }
  2579. var evt = $.Event("select2-removing");
  2580. evt.val = this.id(data);
  2581. evt.choice = data;
  2582. this.opts.element.trigger(evt);
  2583. if (evt.isDefaultPrevented()) {
  2584. return false;
  2585. }
  2586. while((index = indexOf(this.id(data), val)) >= 0) {
  2587. val.splice(index, 1);
  2588. this.setVal(val);
  2589. if (this.select) this.postprocessResults();
  2590. }
  2591. selected.remove();
  2592. this.opts.element.trigger({ type: "select2-removed", val: this.id(data), choice: data });
  2593. this.triggerChange({ removed: data });
  2594. return true;
  2595. },
  2596. // multi
  2597. postprocessResults: function (data, initial, noHighlightUpdate) {
  2598. var val = this.getVal(),
  2599. choices = this.results.find(".select2-result"),
  2600. compound = this.results.find(".select2-result-with-children"),
  2601. self = this;
  2602. choices.each2(function (i, choice) {
  2603. var id = self.id(choice.data("select2-data"));
  2604. if (indexOf(id, val) >= 0) {
  2605. choice.addClass("select2-selected");
  2606. // mark all children of the selected parent as selected
  2607. choice.find(".select2-result-selectable").addClass("select2-selected");
  2608. }
  2609. });
  2610. compound.each2(function(i, choice) {
  2611. // hide an optgroup if it doesn't have any selectable children
  2612. if (!choice.is('.select2-result-selectable')
  2613. && choice.find(".select2-result-selectable:not(.select2-selected)").length === 0) {
  2614. choice.addClass("select2-selected");
  2615. }
  2616. });
  2617. if (this.highlight() == -1 && noHighlightUpdate !== false){
  2618. self.highlight(0);
  2619. }
  2620. //If all results are chosen render formatNoMatches
  2621. if(!this.opts.createSearchChoice && !choices.filter('.select2-result:not(.select2-selected)').length > 0){
  2622. if(!data || data && !data.more && this.results.find(".select2-no-results").length === 0) {
  2623. if (checkFormatter(self.opts.formatNoMatches, "formatNoMatches")) {
  2624. this.results.append("<li class='select2-no-results'>" + evaluate(self.opts.formatNoMatches, self.opts.element, self.search.val()) + "</li>");
  2625. }
  2626. }
  2627. }
  2628. },
  2629. // multi
  2630. getMaxSearchWidth: function() {
  2631. return this.selection.width() - getSideBorderPadding(this.search);
  2632. },
  2633. // multi
  2634. resizeSearch: function () {
  2635. var minimumWidth, left, maxWidth, containerLeft, searchWidth,
  2636. sideBorderPadding = getSideBorderPadding(this.search);
  2637. minimumWidth = measureTextWidth(this.search) + 10;
  2638. left = this.search.offset().left;
  2639. maxWidth = this.selection.width();
  2640. containerLeft = this.selection.offset().left;
  2641. searchWidth = maxWidth - (left - containerLeft) - sideBorderPadding;
  2642. if (searchWidth < minimumWidth) {
  2643. searchWidth = maxWidth - sideBorderPadding;
  2644. }
  2645. if (searchWidth < 40) {
  2646. searchWidth = maxWidth - sideBorderPadding;
  2647. }
  2648. if (searchWidth <= 0) {
  2649. searchWidth = minimumWidth;
  2650. }
  2651. this.search.width(Math.floor(searchWidth));
  2652. },
  2653. // multi
  2654. getVal: function () {
  2655. var val;
  2656. if (this.select) {
  2657. val = this.select.val();
  2658. return val === null ? [] : val;
  2659. } else {
  2660. val = this.opts.element.val();
  2661. return splitVal(val, this.opts.separator);
  2662. }
  2663. },
  2664. // multi
  2665. setVal: function (val) {
  2666. var unique;
  2667. if (this.select) {
  2668. this.select.val(val);
  2669. } else {
  2670. unique = [];
  2671. // filter out duplicates
  2672. $(val).each(function () {
  2673. if (indexOf(this, unique) < 0) unique.push(this);
  2674. });
  2675. this.opts.element.val(unique.length === 0 ? "" : unique.join(this.opts.separator));
  2676. }
  2677. },
  2678. // multi
  2679. buildChangeDetails: function (old, current) {
  2680. var current = current.slice(0),
  2681. old = old.slice(0);
  2682. // remove intersection from each array
  2683. for (var i = 0; i < current.length; i++) {
  2684. for (var j = 0; j < old.length; j++) {
  2685. if (equal(this.opts.id(current[i]), this.opts.id(old[j]))) {
  2686. current.splice(i, 1);
  2687. if(i>0){
  2688. i--;
  2689. }
  2690. old.splice(j, 1);
  2691. j--;
  2692. }
  2693. }
  2694. }
  2695. return {added: current, removed: old};
  2696. },
  2697. // multi
  2698. val: function (val, triggerChange) {
  2699. var oldData, self=this;
  2700. if (arguments.length === 0) {
  2701. return this.getVal();
  2702. }
  2703. oldData=this.data();
  2704. if (!oldData.length) oldData=[];
  2705. // val is an id. !val is true for [undefined,null,'',0] - 0 is legal
  2706. if (!val && val !== 0) {
  2707. this.opts.element.val("");
  2708. this.updateSelection([]);
  2709. this.clearSearch();
  2710. if (triggerChange) {
  2711. this.triggerChange({added: this.data(), removed: oldData});
  2712. }
  2713. return;
  2714. }
  2715. // val is a list of ids
  2716. this.setVal(val);
  2717. if (this.select) {
  2718. this.opts.initSelection(this.select, this.bind(this.updateSelection));
  2719. if (triggerChange) {
  2720. this.triggerChange(this.buildChangeDetails(oldData, this.data()));
  2721. }
  2722. } else {
  2723. if (this.opts.initSelection === undefined) {
  2724. throw new Error("val() cannot be called if initSelection() is not defined");
  2725. }
  2726. this.opts.initSelection(this.opts.element, function(data){
  2727. var ids=$.map(data, self.id);
  2728. self.setVal(ids);
  2729. self.updateSelection(data);
  2730. self.clearSearch();
  2731. if (triggerChange) {
  2732. self.triggerChange(self.buildChangeDetails(oldData, self.data()));
  2733. }
  2734. });
  2735. }
  2736. this.clearSearch();
  2737. },
  2738. // multi
  2739. onSortStart: function() {
  2740. if (this.select) {
  2741. throw new Error("Sorting of elements is not supported when attached to <select>. Attach to <input type='hidden'/> instead.");
  2742. }
  2743. // collapse search field into 0 width so its container can be collapsed as well
  2744. this.search.width(0);
  2745. // hide the container
  2746. this.searchContainer.hide();
  2747. },
  2748. // multi
  2749. onSortEnd:function() {
  2750. var val=[], self=this;
  2751. // show search and move it to the end of the list
  2752. this.searchContainer.show();
  2753. // make sure the search container is the last item in the list
  2754. this.searchContainer.appendTo(this.searchContainer.parent());
  2755. // since we collapsed the width in dragStarted, we resize it here
  2756. this.resizeSearch();
  2757. // update selection
  2758. this.selection.find(".select2-search-choice").each(function() {
  2759. val.push(self.opts.id($(this).data("select2-data")));
  2760. });
  2761. this.setVal(val);
  2762. this.triggerChange();
  2763. },
  2764. // multi
  2765. data: function(values, triggerChange) {
  2766. var self=this, ids, old;
  2767. if (arguments.length === 0) {
  2768. return this.selection
  2769. .children(".select2-search-choice")
  2770. .map(function() { return $(this).data("select2-data"); })
  2771. .get();
  2772. } else {
  2773. old = this.data();
  2774. if (!values) { values = []; }
  2775. ids = $.map(values, function(e) { return self.opts.id(e); });
  2776. this.setVal(ids);
  2777. this.updateSelection(values);
  2778. this.clearSearch();
  2779. if (triggerChange) {
  2780. this.triggerChange(this.buildChangeDetails(old, this.data()));
  2781. }
  2782. }
  2783. }
  2784. });
  2785. $.fn.select2 = function () {
  2786. var args = Array.prototype.slice.call(arguments, 0),
  2787. opts,
  2788. select2,
  2789. method, value, multiple,
  2790. allowedMethods = ["val", "destroy", "opened", "open", "close", "focus", "isFocused", "container", "dropdown", "onSortStart", "onSortEnd", "enable", "disable", "readonly", "positionDropdown", "data", "search"],
  2791. valueMethods = ["opened", "isFocused", "container", "dropdown"],
  2792. propertyMethods = ["val", "data"],
  2793. methodsMap = { search: "externalSearch" };
  2794. this.each(function () {
  2795. if (args.length === 0 || typeof(args[0]) === "object") {
  2796. opts = args.length === 0 ? {} : $.extend({}, args[0]);
  2797. opts.element = $(this);
  2798. if (opts.element.get(0).tagName.toLowerCase() === "select") {
  2799. multiple = opts.element.prop("multiple");
  2800. } else {
  2801. multiple = opts.multiple || false;
  2802. if ("tags" in opts) {opts.multiple = multiple = true;}
  2803. }
  2804. select2 = multiple ? new window.Select2["class"].multi() : new window.Select2["class"].single();
  2805. select2.init(opts);
  2806. } else if (typeof(args[0]) === "string") {
  2807. if (indexOf(args[0], allowedMethods) < 0) {
  2808. throw "Unknown method: " + args[0];
  2809. }
  2810. value = undefined;
  2811. select2 = $(this).data("select2");
  2812. if (select2 === undefined) return;
  2813. method=args[0];
  2814. if (method === "container") {
  2815. value = select2.container;
  2816. } else if (method === "dropdown") {
  2817. value = select2.dropdown;
  2818. } else {
  2819. if (methodsMap[method]) method = methodsMap[method];
  2820. value = select2[method].apply(select2, args.slice(1));
  2821. }
  2822. if (indexOf(args[0], valueMethods) >= 0
  2823. || (indexOf(args[0], propertyMethods) >= 0 && args.length == 1)) {
  2824. return false; // abort the iteration, ready to return first matched value
  2825. }
  2826. } else {
  2827. throw "Invalid arguments to select2 plugin: " + args;
  2828. }
  2829. });
  2830. return (value === undefined) ? this : value;
  2831. };
  2832. // plugin defaults, accessible to users
  2833. $.fn.select2.defaults = {
  2834. width: "copy",
  2835. loadMorePadding: 0,
  2836. closeOnSelect: true,
  2837. openOnEnter: true,
  2838. containerCss: {},
  2839. dropdownCss: {},
  2840. containerCssClass: "",
  2841. dropdownCssClass: "",
  2842. formatResult: function(result, container, query, escapeMarkup) {
  2843. var markup=[];
  2844. markMatch(result.text, query.term, markup, escapeMarkup);
  2845. return markup.join("");
  2846. },
  2847. formatSelection: function (data, container, escapeMarkup) {
  2848. return data ? escapeMarkup(data.text) : undefined;
  2849. },
  2850. sortResults: function (results, container, query) {
  2851. return results;
  2852. },
  2853. formatResultCssClass: function(data) {return data.css;},
  2854. formatSelectionCssClass: function(data, container) {return undefined;},
  2855. formatMatches: function (matches) { return matches + " results are available, use up and down arrow keys to navigate."; },
  2856. formatNoMatches: function () { return "No matches found"; },
  2857. formatInputTooShort: function (input, min) { var n = min - input.length; return "Please enter " + n + " or more character" + (n == 1? "" : "s"); },
  2858. formatInputTooLong: function (input, max) { var n = input.length - max; return "Please delete " + n + " character" + (n == 1? "" : "s"); },
  2859. formatSelectionTooBig: function (limit) { return "You can only select " + limit + " item" + (limit == 1 ? "" : "s"); },
  2860. formatLoadMore: function (pageNumber) { return "Loading more results…"; },
  2861. formatSearching: function () { return "Searching…"; },
  2862. minimumResultsForSearch: 0,
  2863. minimumInputLength: 0,
  2864. maximumInputLength: null,
  2865. maximumSelectionSize: 0,
  2866. id: function (e) { return e == undefined ? null : e.id; },
  2867. matcher: function(term, text) {
  2868. return stripDiacritics(''+text).toUpperCase().indexOf(stripDiacritics(''+term).toUpperCase()) >= 0;
  2869. },
  2870. separator: ",",
  2871. tokenSeparators: [],
  2872. tokenizer: defaultTokenizer,
  2873. escapeMarkup: defaultEscapeMarkup,
  2874. blurOnChange: false,
  2875. selectOnBlur: false,
  2876. adaptContainerCssClass: function(c) { return c; },
  2877. adaptDropdownCssClass: function(c) { return null; },
  2878. nextSearchTerm: function(selectedObject, currentSearchTerm) { return undefined; },
  2879. searchInputPlaceholder: '',
  2880. createSearchChoicePosition: 'top',
  2881. shouldFocusInput: function (instance) {
  2882. // Attempt to detect touch devices
  2883. var supportsTouchEvents = (('ontouchstart' in window) ||
  2884. (navigator.msMaxTouchPoints > 0));
  2885. // Only devices which support touch events should be special cased
  2886. if (!supportsTouchEvents) {
  2887. return true;
  2888. }
  2889. // Never focus the input if search is disabled
  2890. if (instance.opts.minimumResultsForSearch < 0) {
  2891. return false;
  2892. }
  2893. return true;
  2894. }
  2895. };
  2896. $.fn.select2.ajaxDefaults = {
  2897. transport: $.ajax,
  2898. params: {
  2899. type: "GET",
  2900. cache: false,
  2901. dataType: "json"
  2902. }
  2903. };
  2904. // exports
  2905. window.Select2 = {
  2906. query: {
  2907. ajax: ajax,
  2908. local: local,
  2909. tags: tags
  2910. }, util: {
  2911. debounce: debounce,
  2912. markMatch: markMatch,
  2913. escapeMarkup: defaultEscapeMarkup,
  2914. stripDiacritics: stripDiacritics
  2915. }, "class": {
  2916. "abstract": AbstractSelect2,
  2917. "single": SingleSelect2,
  2918. "multi": MultiSelect2
  2919. }
  2920. };
  2921. }(jQuery));