select2.js 64 KB

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  1. /*
  2. Copyright 2012 Igor Vaynberg
  3. Version: @@ver@@ Timestamp: @@timestamp@@
  4. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in
  5. compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:
  6. http://www.apache.org/licenses/LICENSE-2.0
  7. Unless required by applicable law or agreed to in writing, software distributed under the License is
  8. distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  9. See the License for the specific language governing permissions and limitations under the License.
  10. */
  11. (function ($) {
  12. if(typeof $.fn.each2 == "undefined"){
  13. $.fn.extend({
  14. /*
  15. * 4-10 times faster .each replacement
  16. * use it carefully, as it overrides jQuery context of element on each iteration
  17. */
  18. each2 : function (c) {
  19. var j = $([0]), i = -1, l = this.length;
  20. while (
  21. ++i < l
  22. && (j.context = j[0] = this[i])
  23. && c.call(j[0], i, j) !== false //"this"=DOM, i=index, j=jQuery object
  24. );
  25. return this;
  26. }
  27. });
  28. }
  29. })(jQuery);
  30. (function ($, undefined) {
  31. "use strict";
  32. /*global document, window, jQuery, console */
  33. if (window.Select2 !== undefined) {
  34. return;
  35. }
  36. var KEY, AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer;
  37. KEY = {
  38. TAB: 9,
  39. ENTER: 13,
  40. ESC: 27,
  41. SPACE: 32,
  42. LEFT: 37,
  43. UP: 38,
  44. RIGHT: 39,
  45. DOWN: 40,
  46. SHIFT: 16,
  47. CTRL: 17,
  48. ALT: 18,
  49. PAGE_UP: 33,
  50. PAGE_DOWN: 34,
  51. HOME: 36,
  52. END: 35,
  53. BACKSPACE: 8,
  54. DELETE: 46,
  55. isArrow: function (k) {
  56. k = k.which ? k.which : k;
  57. switch (k) {
  58. case KEY.LEFT:
  59. case KEY.RIGHT:
  60. case KEY.UP:
  61. case KEY.DOWN:
  62. return true;
  63. }
  64. return false;
  65. },
  66. isControl: function (k) {
  67. k = k.which ? k.which : k;
  68. switch (k) {
  69. case KEY.SHIFT:
  70. case KEY.CTRL:
  71. case KEY.ALT:
  72. return true;
  73. }
  74. return false;
  75. },
  76. isFunctionKey: function (k) {
  77. k = k.which ? k.which : k;
  78. return k >= 112 && k <= 123;
  79. }
  80. };
  81. nextUid=(function() { var counter=1; return function() { return counter++; }; }());
  82. function indexOf(value, array) {
  83. var i = 0, l = array.length, v;
  84. if (typeof value === "undefined") {
  85. return -1;
  86. }
  87. if (value.constructor === String) {
  88. for (; i < l; i = i + 1) if (value.localeCompare(array[i]) === 0) return i;
  89. } else {
  90. for (; i < l; i = i + 1) {
  91. v = array[i];
  92. if (v.constructor === String) {
  93. if (v.localeCompare(value) === 0) return i;
  94. } else {
  95. if (v === value) return i;
  96. }
  97. }
  98. }
  99. return -1;
  100. }
  101. /**
  102. * Compares equality of a and b taking into account that a and b may be strings, in which case localeCompare is used
  103. * @param a
  104. * @param b
  105. */
  106. function equal(a, b) {
  107. if (a === b) return true;
  108. if (a === undefined || b === undefined) return false;
  109. if (a === null || b === null) return false;
  110. if (a.constructor === String) return a.localeCompare(b) === 0;
  111. if (b.constructor === String) return b.localeCompare(a) === 0;
  112. return false;
  113. }
  114. /**
  115. * Splits the string into an array of values, trimming each value. An empty array is returned for nulls or empty
  116. * strings
  117. * @param string
  118. * @param separator
  119. */
  120. function splitVal(string, separator) {
  121. var val, i, l;
  122. if (string === null || string.length < 1) return [];
  123. val = string.split(separator);
  124. for (i = 0, l = val.length; i < l; i = i + 1) val[i] = $.trim(val[i]);
  125. return val;
  126. }
  127. function getSideBorderPadding(element) {
  128. return element.outerWidth() - element.width();
  129. }
  130. function installKeyUpChangeEvent(element) {
  131. element.bind("keydown", function () {
  132. element.data("keyup-change-value", element.val());
  133. });
  134. element.bind("keyup", function () {
  135. if (element.val() !== element.data("keyup-change-value")) {
  136. element.trigger("keyup-change");
  137. }
  138. });
  139. }
  140. $(document).delegate("*", "mousemove", function (e) {
  141. $(document).data("select2-lastpos", {x: e.pageX, y: e.pageY});
  142. });
  143. /**
  144. * filters mouse events so an event is fired only if the mouse moved.
  145. *
  146. * filters out mouse events that occur when mouse is stationary but
  147. * the elements under the pointer are scrolled.
  148. */
  149. function installFilteredMouseMove(element) {
  150. element.bind("mousemove", function (e) {
  151. var lastpos = $(document).data("select2-lastpos");
  152. if (lastpos === undefined || lastpos.x !== e.pageX || lastpos.y !== e.pageY) {
  153. $(e.target).trigger("mousemove-filtered", e);
  154. }
  155. });
  156. }
  157. /**
  158. * Debounces a function. Returns a function that calls the original fn function only if no invocations have been made
  159. * within the last quietMillis milliseconds.
  160. *
  161. * @param quietMillis number of milliseconds to wait before invoking fn
  162. * @param fn function to be debounced
  163. * @return debounced version of fn
  164. */
  165. function debounce(quietMillis, fn) {
  166. var timeout;
  167. return function () {
  168. window.clearTimeout(timeout);
  169. timeout = window.setTimeout(fn, quietMillis);
  170. };
  171. }
  172. function installDebouncedScroll(threshold, element) {
  173. var notify = debounce(threshold, function (e) { element.trigger("scroll-debounced", e);});
  174. element.bind("scroll", function (e) {
  175. if (indexOf(e.target, element.get()) >= 0) notify(e);
  176. });
  177. }
  178. function killEvent(event) {
  179. event.preventDefault();
  180. event.stopPropagation();
  181. }
  182. function measureTextWidth(e) {
  183. if (!sizer){
  184. var style = e[0].currentStyle || window.getComputedStyle(e[0], null);
  185. sizer = $("<div></div>").css({
  186. position: "absolute",
  187. left: "-1000px",
  188. top: "-1000px",
  189. display: "none",
  190. fontSize: style.fontSize,
  191. fontFamily: style.fontFamily,
  192. fontStyle: style.fontStyle,
  193. fontWeight: style.fontWeight,
  194. letterSpacing: style.letterSpacing,
  195. textTransform: style.textTransform,
  196. whiteSpace: "nowrap"
  197. });
  198. $("body").append(sizer);
  199. }
  200. sizer.text(e.val());
  201. return sizer.width();
  202. }
  203. function markMatch(text, term, markup) {
  204. var match=text.toUpperCase().indexOf(term.toUpperCase()),
  205. tl=term.length;
  206. if (match<0) {
  207. markup.push(text);
  208. return;
  209. }
  210. markup.push(text.substring(0, match));
  211. markup.push("<span class='select2-match'>");
  212. markup.push(text.substring(match, match + tl));
  213. markup.push("</span>");
  214. markup.push(text.substring(match + tl, text.length));
  215. }
  216. /**
  217. * Produces an ajax-based query function
  218. *
  219. * @param options object containing configuration paramters
  220. * @param options.transport function that will be used to execute the ajax request. must be compatible with parameters supported by $.ajax
  221. * @param options.url url for the data
  222. * @param options.data a function(searchTerm, pageNumber, context) that should return an object containing query string parameters for the above url.
  223. * @param options.dataType request data type: ajax, jsonp, other datatatypes supported by jQuery's $.ajax function or the transport function if specified
  224. * @param options.quietMillis (optional) milliseconds to wait before making the ajaxRequest, helps debounce the ajax function if invoked too often
  225. * @param options.results a function(remoteData, pageNumber) that converts data returned form the remote request to the format expected by Select2.
  226. * The expected format is an object containing the following keys:
  227. * results array of objects that will be used as choices
  228. * more (optional) boolean indicating whether there are more results available
  229. * Example: {results:[{id:1, text:'Red'},{id:2, text:'Blue'}], more:true}
  230. */
  231. function ajax(options) {
  232. var timeout, // current scheduled but not yet executed request
  233. requestSequence = 0, // sequence used to drop out-of-order responses
  234. handler = null,
  235. quietMillis = options.quietMillis || 100;
  236. return function (query) {
  237. window.clearTimeout(timeout);
  238. timeout = window.setTimeout(function () {
  239. requestSequence += 1; // increment the sequence
  240. var requestNumber = requestSequence, // this request's sequence number
  241. data = options.data, // ajax data function
  242. transport = options.transport || $.ajax,
  243. type = options.type || 'GET'; // set type of request (GET or POST)
  244. data = data.call(this, query.term, query.page, query.context);
  245. if( null !== handler) { handler.abort(); }
  246. handler = transport.call(null, {
  247. url: options.url,
  248. dataType: options.dataType,
  249. data: data,
  250. type: type,
  251. success: function (data) {
  252. if (requestNumber < requestSequence) {
  253. return;
  254. }
  255. // TODO 3.0 - replace query.page with query so users have access to term, page, etc.
  256. var results = options.results(data, query.page);
  257. query.callback(results);
  258. }
  259. });
  260. }, quietMillis);
  261. };
  262. }
  263. /**
  264. * Produces a query function that works with a local array
  265. *
  266. * @param options object containing configuration parameters. The options parameter can either be an array or an
  267. * object.
  268. *
  269. * If the array form is used it is assumed that it contains objects with 'id' and 'text' keys.
  270. *
  271. * If the object form is used ti is assumed that it contains 'data' and 'text' keys. The 'data' key should contain
  272. * an array of objects that will be used as choices. These objects must contain at least an 'id' key. The 'text'
  273. * key can either be a String in which case it is expected that each element in the 'data' array has a key with the
  274. * value of 'text' which will be used to match choices. Alternatively, text can be a function(item) that can extract
  275. * the text.
  276. */
  277. function local(options) {
  278. var data = options, // data elements
  279. dataText,
  280. text = function (item) { return ""+item.text; }; // function used to retrieve the text portion of a data item that is matched against the search
  281. if (!$.isArray(data)) {
  282. text = data.text;
  283. // if text is not a function we assume it to be a key name
  284. if (!$.isFunction(text)) {
  285. dataText = data.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
  286. text = function (item) { return item[dataText]; };
  287. }
  288. data = data.results;
  289. }
  290. return function (query) {
  291. var t = query.term, filtered = {};
  292. if (t === "") {
  293. query.callback({results: data});
  294. return;
  295. }
  296. filtered.results = $(data)
  297. .filter(function () {return query.matcher(t, text(this));})
  298. .get();
  299. query.callback(filtered);
  300. };
  301. }
  302. // TODO javadoc
  303. function tags(data) {
  304. // TODO even for a function we should probably return a wrapper that does the same object/string check as
  305. // the function for arrays. otherwise only functions that return objects are supported.
  306. if ($.isFunction(data)) {
  307. return data;
  308. }
  309. // if not a function we assume it to be an array
  310. return function (query) {
  311. var t = query.term, filtered = {results: []};
  312. $(data).each(function () {
  313. var isObject = this.text !== undefined,
  314. text = isObject ? this.text : this;
  315. if (t === "" || query.matcher(t, text)) {
  316. filtered.results.push(isObject ? this : {id: this, text: this});
  317. }
  318. });
  319. query.callback(filtered);
  320. };
  321. }
  322. /**
  323. * blurs any Select2 container that has focus when an element outside them was clicked or received focus
  324. */
  325. $(document).ready(function () {
  326. $(document).delegate("*", "mousedown focusin touchend", function (e) {
  327. var target = $(e.target).closest("div.select2-container").get(0);
  328. if (target) {
  329. $(document).find("div.select2-container-active").each(function () {
  330. if (this !== target) $(this).data("select2").blur();
  331. });
  332. } else {
  333. target = $(e.target).closest("div.select2-drop").get(0);
  334. $(document).find("div.select2-drop-active").each(function () {
  335. if (this !== target) $(this).data("select2").blur();
  336. });
  337. }
  338. });
  339. });
  340. function evaluate(val) {
  341. return $.isFunction(val) ? val() : val;
  342. }
  343. /**
  344. * Creates a new class
  345. *
  346. * @param superClass
  347. * @param methods
  348. */
  349. function clazz(SuperClass, methods) {
  350. var constructor = function () {};
  351. constructor.prototype = new SuperClass;
  352. constructor.prototype.constructor = constructor;
  353. constructor.prototype.parent = SuperClass.prototype;
  354. constructor.prototype = $.extend(constructor.prototype, methods);
  355. return constructor;
  356. }
  357. AbstractSelect2 = clazz(Object, {
  358. // abstract
  359. bind: function (func) {
  360. var self = this;
  361. return function () {
  362. func.apply(self, arguments);
  363. };
  364. },
  365. // abstract
  366. init: function (opts) {
  367. var results, search, resultsSelector = ".select2-results";
  368. // prepare options
  369. this.opts = opts = this.prepareOpts(opts);
  370. this.id=opts.id;
  371. // destroy if called on an existing component
  372. if (opts.element.data("select2") !== undefined &&
  373. opts.element.data("select2") !== null) {
  374. this.destroy();
  375. }
  376. this.enabled=true;
  377. this.container = this.createContainer();
  378. this.body = opts.element.closest("body"); // cache for future access
  379. if (opts.element.attr("class") !== undefined) {
  380. this.container.addClass(opts.element.attr("class"));
  381. }
  382. this.container.css(evaluate(opts.containerCss));
  383. this.container.addClass(evaluate(opts.containerCssClass));
  384. // swap container for the element
  385. this.opts.element
  386. .data("select2", this)
  387. .hide()
  388. .after(this.container);
  389. this.container.data("select2", this);
  390. this.dropdown = this.container.find(".select2-drop");
  391. this.dropdown.css(evaluate(opts.dropdownCss));
  392. this.dropdown.addClass(evaluate(opts.dropdownCssClass));
  393. this.dropdown.data("select2", this);
  394. this.results = results = this.container.find(resultsSelector);
  395. this.search = search = this.container.find("input.select2-input");
  396. this.resultsPage = 0;
  397. this.context = null;
  398. // initialize the container
  399. this.initContainer();
  400. installFilteredMouseMove(this.results);
  401. this.dropdown.delegate(resultsSelector, "mousemove-filtered", this.bind(this.highlightUnderEvent));
  402. installDebouncedScroll(80, this.results);
  403. this.dropdown.delegate(resultsSelector, "scroll-debounced", this.bind(this.loadMoreIfNeeded));
  404. // if jquery.mousewheel plugin is installed we can prevent out-of-bounds scrolling of results via mousewheel
  405. if ($.fn.mousewheel) {
  406. results.mousewheel(function (e, delta, deltaX, deltaY) {
  407. var top = results.scrollTop(), height;
  408. if (deltaY > 0 && top - deltaY <= 0) {
  409. results.scrollTop(0);
  410. killEvent(e);
  411. } else if (deltaY < 0 && results.get(0).scrollHeight - results.scrollTop() + deltaY <= results.height()) {
  412. results.scrollTop(results.get(0).scrollHeight - results.height());
  413. killEvent(e);
  414. }
  415. });
  416. }
  417. installKeyUpChangeEvent(search);
  418. search.bind("keyup-change", this.bind(this.updateResults));
  419. search.bind("focus", function () { search.addClass("select2-focused");});
  420. search.bind("blur", function () { search.removeClass("select2-focused");});
  421. this.dropdown.delegate(resultsSelector, "click", this.bind(function (e) {
  422. if ($(e.target).closest(".select2-result:not(.select2-disabled)").length > 0) {
  423. this.highlightUnderEvent(e);
  424. this.selectHighlighted(e);
  425. } else {
  426. killEvent(e);
  427. this.focusSearch();
  428. }
  429. }));
  430. if ($.isFunction(this.opts.initSelection)) {
  431. // initialize selection based on the current value of the source element
  432. this.initSelection();
  433. // if the user has provided a function that can set selection based on the value of the source element
  434. // we monitor the change event on the element and trigger it, allowing for two way synchronization
  435. this.monitorSource();
  436. }
  437. if (opts.element.is(":disabled")) this.disable();
  438. },
  439. // abstract
  440. destroy: function () {
  441. var select2 = this.opts.element.data("select2");
  442. if (select2 !== undefined) {
  443. select2.container.remove();
  444. select2.dropdown.remove();
  445. select2.opts.element
  446. .removeData("select2")
  447. .unbind(".select2")
  448. .show();
  449. }
  450. },
  451. // abstract
  452. prepareOpts: function (opts) {
  453. var element, select, idKey;
  454. element = opts.element;
  455. if (element.get(0).tagName.toLowerCase() === "select") {
  456. this.select = select = opts.element;
  457. }
  458. if (select) {
  459. // these options are not allowed when attached to a select because they are picked up off the element itself
  460. $.each(["id", "multiple", "ajax", "query", "createSearchChoice", "initSelection", "data", "tags"], function () {
  461. if (this in opts) {
  462. throw new Error("Option '" + this + "' is not allowed for Select2 when attached to a <select> element.");
  463. }
  464. });
  465. }
  466. opts = $.extend({}, {
  467. containerCss: {},
  468. dropdownCss: {},
  469. containerCssClass: "",
  470. dropdownCssClass: "",
  471. populateResults: function(container, results, query) {
  472. var uidToData={}, populate, markup=[], uid, data, result, children, formatted;
  473. populate=function(results, depth) {
  474. var i, l, uid, result, selectable, compound;
  475. for (i = 0, l = results.length; i < l; i = i + 1) {
  476. result=results[i];
  477. selectable=("id" in result); // TODO switch to id() function
  478. compound=("children" in result) && result.children.length > 0;
  479. markup.push("<li class='select2-result-depth-"+depth);
  480. if (!selectable) { markup.push(" select2-result-unselectable"); } else { markup.push(" select2-result");}
  481. if (compound) { markup.push(" select2-result-with-children"); }
  482. markup.push("'");
  483. if (selectable) {
  484. uid=nextUid();
  485. markup.push(" id='select2-result-"+uid+"'");
  486. uidToData[uid]=result;
  487. }
  488. markup.push("><div class='select2-result-label'>");
  489. formatted=opts.formatResult(result, query, markup);
  490. // for backwards compat with <3.0 versions
  491. if (formatted!==undefined) {
  492. markup.push(formatted);
  493. }
  494. markup.push("</div>");
  495. if (compound) {
  496. markup.push("<ul class='select2-result-sub'>");
  497. populate(result.children, depth + 1);
  498. markup.push("</ul>");
  499. }
  500. markup.push("</li>");
  501. }
  502. };
  503. populate(results, 0);
  504. children=container.children();
  505. if (children.length===0) {
  506. container.html(markup.join(""));
  507. } else {
  508. $(children[children.length-1]).append(markup.join(""));
  509. }
  510. for (uid in uidToData) {
  511. $("#select2-result-"+uid, container).data("select2-data", uidToData[uid]);
  512. }
  513. },
  514. formatResult: function(result, query, markup) {
  515. markMatch(result.text, query.term, markup);
  516. },
  517. formatSelection: function (data) {
  518. return data.fullText || data.text;
  519. },
  520. formatNoMatches: function () { return "No matches found"; },
  521. formatInputTooShort: function (input, min) { return "Please enter " + (min - input.length) + " more characters"; },
  522. formatLoadMore: function (pageNumber) { return "Loading more results..."; },
  523. minimumResultsForSearch: 0,
  524. minimumInputLength: 0,
  525. id: function (e) { return e.id; },
  526. matcher: function(term, text) {
  527. return text.toUpperCase().indexOf(term.toUpperCase()) >= 0;
  528. }
  529. }, opts);
  530. if (typeof(opts.id) !== "function") {
  531. idKey = opts.id;
  532. opts.id = function (e) { return e[idKey]; };
  533. }
  534. if (select) {
  535. opts.query = this.bind(function (query) {
  536. var data = { results: [], more: false },
  537. term = query.term,
  538. children, firstChild, process;
  539. process=function(element, collection) {
  540. var group;
  541. if (element.is("option")) {
  542. if (query.matcher(term, element.text())) {
  543. collection.push({id:element.attr("value"), text:element.text()});
  544. }
  545. } else if (element.is("optgroup")) {
  546. group={text:element.attr("label"), children:[]};
  547. element.children().each2(function(i, elm) { process(elm, group.children); });
  548. if (group.children.length>0) {
  549. collection.push(group);
  550. }
  551. }
  552. };
  553. children=element.children();
  554. // ignore the placeholder option if there is one
  555. if (this.getPlaceholder() !== undefined && children.length > 0) {
  556. firstChild = children[0];
  557. if ($(firstChild).text() === "") {
  558. children=children.not(firstChild);
  559. }
  560. }
  561. children.each2(function(i, elm) { process(elm, data.results); });
  562. query.callback(data);
  563. });
  564. // this is needed because inside val() we construct choices from options and there id is hardcoded
  565. opts.id=function(e) { return e.id; };
  566. } else {
  567. if (!("query" in opts)) {
  568. if ("ajax" in opts) {
  569. opts.query = ajax(opts.ajax);
  570. } else if ("data" in opts) {
  571. opts.query = local(opts.data);
  572. } else if ("tags" in opts) {
  573. opts.query = tags(opts.tags);
  574. opts.createSearchChoice = function (term) { return {id: term, text: term}; };
  575. opts.initSelection = function (element) {
  576. var data = [];
  577. $(splitVal(element.val(), ",")).each(function () {
  578. data.push({id: this, text: this});
  579. });
  580. return data;
  581. };
  582. }
  583. }
  584. }
  585. if (typeof(opts.query) !== "function") {
  586. throw "query function not defined for Select2 " + opts.element.attr("id");
  587. }
  588. return opts;
  589. },
  590. /**
  591. * Monitor the original element for changes and update select2 accordingly
  592. */
  593. // abstract
  594. monitorSource: function () {
  595. this.opts.element.bind("change.select2", this.bind(function (e) {
  596. if (this.opts.element.data("select2-change-triggered") !== true) {
  597. this.initSelection();
  598. }
  599. }));
  600. },
  601. /**
  602. * Triggers the change event on the source element
  603. */
  604. // abstract
  605. triggerChange: function () {
  606. // Prevents recursive triggering
  607. this.opts.element.data("select2-change-triggered", true);
  608. this.opts.element.trigger("change");
  609. this.opts.element.data("select2-change-triggered", false);
  610. },
  611. // abstract
  612. enable: function() {
  613. if (this.enabled) return;
  614. this.enabled=true;
  615. this.container.removeClass("select2-container-disabled");
  616. },
  617. // abstract
  618. disable: function() {
  619. if (!this.enabled) return;
  620. this.close();
  621. this.enabled=false;
  622. this.container.addClass("select2-container-disabled");
  623. },
  624. // abstract
  625. opened: function () {
  626. return this.container.hasClass("select2-dropdown-open");
  627. },
  628. // abstract
  629. positionDropdown: function() {
  630. var offset = this.container.offset();
  631. var height = this.container.outerHeight();
  632. var width = this.container.outerWidth();
  633. var css = {
  634. top: offset.top + height,
  635. left: offset.left,
  636. width: width
  637. }
  638. this.dropdown.css(css);
  639. },
  640. // abstract
  641. open: function () {
  642. if (this.opened()) return;
  643. this.container.addClass("select2-dropdown-open").addClass("select2-container-active");
  644. if(this.dropdown[0] !== this.body.children().last()[0]) {
  645. // ensure the dropdown is the last child of body, so the z-index is always respected correctly
  646. this.dropdown.detach().appendTo(this.body);
  647. }
  648. this.dropdown.addClass("select2-drop-active");
  649. this.positionDropdown();
  650. this.updateResults(true);
  651. this.dropdown.show();
  652. this.ensureHighlightVisible();
  653. this.focusSearch();
  654. },
  655. // abstract
  656. close: function () {
  657. if (!this.opened()) return;
  658. this.dropdown.hide();
  659. this.container.removeClass("select2-dropdown-open");
  660. this.results.empty();
  661. this.clearSearch();
  662. },
  663. // abstract
  664. clearSearch: function () {
  665. },
  666. // abstract
  667. ensureHighlightVisible: function () {
  668. var results = this.results, children, index, child, hb, rb, y, more;
  669. index = this.highlight();
  670. if (index < 0) return;
  671. children = results.find(".select2-result");
  672. child = $(children[index]);
  673. hb = child.offset().top + child.outerHeight();
  674. // if this is the last child lets also make sure select2-more-results is visible
  675. if (index === children.length - 1) {
  676. more = results.find("li.select2-more-results");
  677. if (more.length > 0) {
  678. hb = more.offset().top + more.outerHeight();
  679. }
  680. }
  681. rb = results.offset().top + results.outerHeight();
  682. if (hb > rb) {
  683. results.scrollTop(results.scrollTop() + (hb - rb));
  684. }
  685. y = child.offset().top - results.offset().top;
  686. // make sure the top of the element is visible
  687. if (y < 0) {
  688. results.scrollTop(results.scrollTop() + y); // y is negative
  689. }
  690. },
  691. // abstract
  692. moveHighlight: function (delta) {
  693. var choices = this.results.find(".select2-result"),
  694. index = this.highlight();
  695. while (index > -1 && index < choices.length) {
  696. index += delta;
  697. if (!$(choices[index]).hasClass("select2-disabled")) {
  698. this.highlight(index);
  699. break;
  700. }
  701. }
  702. },
  703. // abstract
  704. highlight: function (index) {
  705. var choices = this.results.find(".select2-result .select2-result-label");
  706. if (arguments.length === 0) {
  707. return indexOf(choices.filter(".select2-highlighted")[0], choices.get());
  708. }
  709. if (index >= choices.length) index = choices.length - 1;
  710. if (index < 0) index = 0;
  711. if ($(choices[index]).parent().is('.select2-result-unselectable')) {
  712. return;
  713. }
  714. choices.removeClass("select2-highlighted");
  715. $(choices[index]).addClass("select2-highlighted");
  716. this.ensureHighlightVisible();
  717. //if (this.opened()) this.focusSearch();
  718. },
  719. // abstract
  720. highlightUnderEvent: function (event) {
  721. var el = $(event.target).closest(".select2-result");
  722. if (el.length > 0 && !el.is(".select2-highlighted")) {
  723. var choices = this.results.find('.select2-result');
  724. this.highlight(choices.index(el));
  725. }
  726. },
  727. // abstract
  728. loadMoreIfNeeded: function () {
  729. var results = this.results,
  730. more = results.find("li.select2-more-results"),
  731. below, // pixels the element is below the scroll fold, below==0 is when the element is starting to be visible
  732. offset = -1, // index of first element without data
  733. page = this.resultsPage + 1,
  734. self=this,
  735. term=this.search.val(),
  736. context=this.context;
  737. if (more.length === 0) return;
  738. below = more.offset().top - results.offset().top - results.height();
  739. if (below <= 0) {
  740. more.addClass("select2-active");
  741. this.opts.query({
  742. term: term,
  743. page: page,
  744. context: context,
  745. matcher: this.opts.matcher,
  746. callback: this.bind(function (data) {
  747. self.opts.populateResults(results, data.results, {term: term, page: page, context:context});
  748. if (data.more===true) {
  749. more.detach();
  750. results.children().filter(":last").append(more);
  751. more.removeClass("select2-active");
  752. } else {
  753. more.remove();
  754. }
  755. self.resultsPage = page;
  756. })});
  757. }
  758. },
  759. /**
  760. * @param initial whether or not this is the call to this method right after the dropdown has been opened
  761. */
  762. // abstract
  763. updateResults: function (initial) {
  764. var search = this.search, results = this.results, opts = this.opts, self=this;
  765. // if the search is currently hidden we do not alter the results
  766. if (initial !== true && this.showSearchInput === false) {
  767. return;
  768. }
  769. search.addClass("select2-active");
  770. function postRender() {
  771. results.scrollTop(0);
  772. search.removeClass("select2-active");
  773. }
  774. function render(html) {
  775. results.html(html);
  776. postRender();
  777. }
  778. if (search.val().length < opts.minimumInputLength) {
  779. render("<li class='select2-no-results'>" + opts.formatInputTooShort(search.val(), opts.minimumInputLength) + "</li>");
  780. return;
  781. }
  782. this.resultsPage = 1;
  783. opts.query({
  784. term: search.val(),
  785. page: this.resultsPage,
  786. context: null,
  787. matcher: opts.matcher,
  788. callback: this.bind(function (data) {
  789. var def; // default choice
  790. // save context, if any
  791. this.context = (data.context===undefined) ? null : data.context;
  792. // create a default choice and prepend it to the list
  793. if (this.opts.createSearchChoice && search.val() !== "") {
  794. def = this.opts.createSearchChoice.call(null, search.val(), data.results);
  795. if (def !== undefined && def !== null && self.id(def) !== undefined && self.id(def) !== null) {
  796. if ($(data.results).filter(
  797. function () {
  798. return equal(self.id(this), self.id(def));
  799. }).length === 0) {
  800. data.results.unshift(def);
  801. }
  802. }
  803. }
  804. if (data.results.length === 0) {
  805. render("<li class='select2-no-results'>" + opts.formatNoMatches(search.val()) + "</li>");
  806. return;
  807. }
  808. results.empty();
  809. self.opts.populateResults(results, data.results, {term: search.val(), page: this.resultsPage, context:null});
  810. postRender();
  811. if (data.more === true) {
  812. results.children().filter(":last").append("<li class='select2-more-results'>" + opts.formatLoadMore(this.resultsPage) + "</li>");
  813. }
  814. this.postprocessResults(data, initial);
  815. })});
  816. },
  817. // abstract
  818. cancel: function () {
  819. this.close();
  820. },
  821. // abstract
  822. blur: function () {
  823. this.close();
  824. this.container.removeClass("select2-container-active");
  825. this.dropdown.removeClass("select2-drop-active");
  826. if (this.search.is(":focus")) { this.search.blur(); }
  827. this.clearSearch();
  828. this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
  829. },
  830. // abstract
  831. focusSearch: function () {
  832. /* we do this in a timeout so that current event processing can complete before this code is executed.
  833. this makes sure the search field is focussed even if the current event would blur it */
  834. window.setTimeout(this.bind(function () {
  835. this.search.focus();
  836. }), 10);
  837. },
  838. // abstract
  839. selectHighlighted: function () {
  840. var data = this.results.find(".select2-highlighted").not(".select2-disabled").closest('.select2-result').not('.select2-result-unselectable').data("select2-data");
  841. if (data) {
  842. this.onSelect(data);
  843. }
  844. },
  845. // abstract
  846. getPlaceholder: function () {
  847. return this.opts.element.attr("placeholder") || this.opts.element.data("placeholder") || this.opts.placeholder;
  848. },
  849. /**
  850. * Get the desired width for the container element. This is
  851. * derived first from option `width` passed to select2, then
  852. * the inline 'style' on the original element, and finally
  853. * falls back to the jQuery calculated element width.
  854. *
  855. * @returns The width string (with units) for the container.
  856. */
  857. // abstract
  858. getContainerWidth: function () {
  859. var style, attrs, matches, i, l;
  860. if (this.opts.width !== undefined)
  861. return this.opts.width;
  862. style = this.opts.element.attr('style');
  863. if (style !== undefined) {
  864. attrs = style.split(';');
  865. for (i = 0, l = attrs.length; i < l; i = i + 1) {
  866. matches = attrs[i].replace(/\s/g, '')
  867. .match(/width:(([-+]?([0-9]*\.)?[0-9]+)(px|em|ex|%|in|cm|mm|pt|pc))/);
  868. if (matches !== null && matches.length >= 1)
  869. return matches[1];
  870. }
  871. }
  872. return this.opts.element.width() + 'px';
  873. }
  874. });
  875. SingleSelect2 = clazz(AbstractSelect2, {
  876. // single
  877. createContainer: function () {
  878. return $("<div></div>", {
  879. "class": "select2-container",
  880. "style": "width: " + this.getContainerWidth()
  881. }).html([
  882. " <a href='javascript:void(0)' class='select2-choice'><input type='text' class='select2-offscreen select2-focusser'/>",
  883. " <span></span><abbr class='select2-search-choice-close' style='display:none;'></abbr>",
  884. " <div><b></b></div>" ,
  885. "</a>",
  886. " <div class='select2-drop' style='display:none;'>" ,
  887. " <div class='select2-search'>" ,
  888. " <input type='text' autocomplete='off' class='select2-input'/>" ,
  889. " </div>" ,
  890. " <ul class='select2-results'>" ,
  891. " </ul>" ,
  892. "</div>"].join(""));
  893. },
  894. // single
  895. open: function () {
  896. if (this.opened()) return;
  897. this.parent.open.apply(this, arguments);
  898. },
  899. // single
  900. close: function () {
  901. if (!this.opened()) return;
  902. this.parent.close.apply(this, arguments);
  903. },
  904. // single
  905. focus: function () {
  906. this.close();
  907. this.selection.focus();
  908. },
  909. // single
  910. isFocused: function () {
  911. return this.selection.is(":focus");
  912. },
  913. // single
  914. cancel: function () {
  915. this.parent.cancel.apply(this, arguments);
  916. this.selection.focus();
  917. },
  918. // single
  919. initContainer: function () {
  920. var selection,
  921. container = this.container,
  922. dropdown = this.dropdown,
  923. containers = $([this.container.get(0), this.dropdown.get(0)]),
  924. clickingInside = false,
  925. selector = ".select2-choice",
  926. focusser=container.find("input.select2-focusser");
  927. this.selection = selection = container.find(selector);
  928. this.search.bind("keydown", this.bind(function (e) {
  929. switch (e.which) {
  930. case KEY.UP:
  931. case KEY.DOWN:
  932. this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
  933. killEvent(e);
  934. return;
  935. case KEY.TAB:
  936. case KEY.ENTER:
  937. this.selectHighlighted();
  938. killEvent(e);
  939. return;
  940. case KEY.ESC:
  941. this.cancel(e);
  942. killEvent(e);
  943. return;
  944. }
  945. }));
  946. containers.delegate(selector, "click", this.bind(function (e) {
  947. clickingInside = true;
  948. if (this.opened()) {
  949. this.close();
  950. selection.focus();
  951. } else if (this.enabled) {
  952. this.open();
  953. }
  954. e.preventDefault();
  955. clickingInside = false;
  956. }));
  957. containers.delegate(selector, "keydown", this.bind(function (e) {
  958. if (!this.enabled || e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e) || e.which === KEY.ESC) {
  959. return;
  960. }
  961. this.open();
  962. if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN || e.which === KEY.SPACE) {
  963. // prevent the page from scrolling
  964. killEvent(e);
  965. }
  966. if (e.which === KEY.ENTER) {
  967. // do not propagate the event otherwise we open, and propagate enter which closes
  968. killEvent(e);
  969. }
  970. }));
  971. containers.delegate(selector, "focus", function () { if (this.enabled) { containers.addClass("select2-container-active"); dropdown.addClass("select2-drop-active"); }});
  972. containers.delegate(selector, "blur", this.bind(function (e) {
  973. if (clickingInside) return;
  974. if (e.target===focusser.get(0)) return; // ignore blurs from focusser
  975. if (!this.opened()) { this.blur(); }
  976. }));
  977. selection.delegate("abbr", "click", this.bind(function (e) {
  978. if (!this.enabled) return;
  979. this.val("");
  980. killEvent(e);
  981. this.close();
  982. this.triggerChange();
  983. selection.focus();
  984. }));
  985. this.setPlaceholder();
  986. focusser.bind("focus", function() { selection.focus(); });
  987. selection.bind("focus", this.bind(function() {
  988. focusser.hide();
  989. this.container.addClass("select2-container-active");
  990. }));
  991. selection.bind("blur", function() { focusser.show(); });
  992. this.opts.element.bind("open", function() { focusser.hide(); });
  993. },
  994. /**
  995. * Sets selection based on source element's value
  996. */
  997. // single
  998. initSelection: function () {
  999. var selected;
  1000. if (this.opts.element.val() === "") {
  1001. this.updateSelection({id: "", text: ""});
  1002. } else {
  1003. selected = this.opts.initSelection.call(null, this.opts.element);
  1004. if (selected !== undefined && selected !== null) {
  1005. this.updateSelection(selected);
  1006. }
  1007. }
  1008. this.close();
  1009. this.setPlaceholder();
  1010. },
  1011. // single
  1012. prepareOpts: function () {
  1013. var opts = this.parent.prepareOpts.apply(this, arguments);
  1014. if (opts.element.get(0).tagName.toLowerCase() === "select") {
  1015. // install sthe selection initializer
  1016. opts.initSelection = function (element) {
  1017. var selected = element.find(":selected");
  1018. // a single select box always has a value, no need to null check 'selected'
  1019. return {id: selected.attr("value"), text: selected.text()};
  1020. };
  1021. }
  1022. return opts;
  1023. },
  1024. // single
  1025. setPlaceholder: function () {
  1026. var placeholder = this.getPlaceholder();
  1027. if (this.opts.element.val() === "" && placeholder !== undefined) {
  1028. // check for a first blank option if attached to a select
  1029. if (this.select && this.select.find("option:first").text() !== "") return;
  1030. if (typeof(placeholder) === "object") {
  1031. this.updateSelection(placeholder);
  1032. } else {
  1033. this.selection.find("span").html(placeholder);
  1034. }
  1035. this.selection.addClass("select2-default");
  1036. this.selection.find("abbr").hide();
  1037. }
  1038. },
  1039. // single
  1040. postprocessResults: function (data, initial) {
  1041. var selected = 0, self = this, showSearchInput = true;
  1042. // find the selected element in the result list
  1043. this.results.find(".select2-result").each2(function (i, elm) {
  1044. if (equal(self.id(elm.data("select2-data")), self.opts.element.val())) {
  1045. selected = i;
  1046. return false;
  1047. }
  1048. });
  1049. // and highlight it
  1050. this.highlight(selected);
  1051. // hide the search box if this is the first we got the results and there are a few of them
  1052. if (initial === true) {
  1053. // TODO below we use data.results.length, but what we really need is something recursive to calc the length
  1054. // TODO in case there are optgroups
  1055. showSearchInput = this.showSearchInput = data.results.length >= this.opts.minimumResultsForSearch;
  1056. this.dropdown.find(".select2-search")[showSearchInput ? "removeClass" : "addClass"]("select2-search-hidden");
  1057. //add "select2-with-searchbox" to the container if search box is shown
  1058. $(this.dropdown, this.container)[showSearchInput ? "addClass" : "removeClass"]("select2-with-searchbox");
  1059. }
  1060. },
  1061. // single
  1062. onSelect: function (data) {
  1063. var old = this.opts.element.val();
  1064. this.opts.element.val(this.id(data));
  1065. this.updateSelection(data);
  1066. this.close();
  1067. this.selection.focus();
  1068. if (!equal(old, this.id(data))) { this.triggerChange(); }
  1069. },
  1070. // single
  1071. updateSelection: function (data) {
  1072. this.selection
  1073. .find("span")
  1074. .html(this.opts.formatSelection(data));
  1075. this.selection.removeClass("select2-default");
  1076. if (this.opts.allowClear && this.getPlaceholder() !== undefined) {
  1077. this.selection.find("abbr").show();
  1078. }
  1079. },
  1080. // single
  1081. val: function () {
  1082. var val, data = null;
  1083. if (arguments.length === 0) {
  1084. return this.opts.element.val();
  1085. }
  1086. val = arguments[0];
  1087. if (this.select) {
  1088. // val is an id
  1089. this.select
  1090. .val(val)
  1091. .find(":selected").each2(function (i, elm) {
  1092. data = {id: elm.attr("value"), text: elm.text()};
  1093. return false;
  1094. });
  1095. this.updateSelection(data);
  1096. } else {
  1097. // val is an object. !val is true for [undefined,null,'']
  1098. this.opts.element.val(!val ? "" : this.id(val));
  1099. this.updateSelection(val);
  1100. }
  1101. this.setPlaceholder();
  1102. },
  1103. // single
  1104. clearSearch: function () {
  1105. this.search.val("");
  1106. }
  1107. });
  1108. MultiSelect2 = clazz(AbstractSelect2, {
  1109. // multi
  1110. createContainer: function () {
  1111. return $("<div></div>", {
  1112. "class": "select2-container select2-container-multi",
  1113. "style": "width: " + this.getContainerWidth()
  1114. }).html([
  1115. " <ul class='select2-choices'>",
  1116. //"<li class='select2-search-choice'><span>California</span><a href="javascript:void(0)" class="select2-search-choice-close"></a></li>" ,
  1117. " <li class='select2-search-field'>" ,
  1118. " <input type='text' autocomplete='off' style='width: 25px;' class='select2-input'>" ,
  1119. " </li>" ,
  1120. "</ul>" ,
  1121. "<div class='select2-drop select2-drop-multi' style='display:none;'>" ,
  1122. " <ul class='select2-results'>" ,
  1123. " </ul>" ,
  1124. "</div>"].join(""));
  1125. },
  1126. // multi
  1127. prepareOpts: function () {
  1128. var opts = this.parent.prepareOpts.apply(this, arguments);
  1129. opts = $.extend({}, {
  1130. closeOnSelect: true
  1131. }, opts);
  1132. // TODO validate placeholder is a string if specified
  1133. if (opts.element.get(0).tagName.toLowerCase() === "select") {
  1134. // install the selection initializer
  1135. opts.initSelection = function (element) {
  1136. var data = [];
  1137. element.find(":selected").each2(function (i, elm) {
  1138. data.push({id: elm.attr("value"), text: elm.text()});
  1139. });
  1140. return data;
  1141. };
  1142. }
  1143. return opts;
  1144. },
  1145. // multi
  1146. initContainer: function () {
  1147. var selector = ".select2-choices", selection;
  1148. this.searchContainer = this.container.find(".select2-search-field");
  1149. this.selection = selection = this.container.find(selector);
  1150. this.search.bind("keydown", this.bind(function (e) {
  1151. if (!this.enabled) return;
  1152. if (e.which === KEY.BACKSPACE && this.search.val() === "") {
  1153. this.close();
  1154. var choices,
  1155. selected = selection.find(".select2-search-choice-focus");
  1156. if (selected.length > 0) {
  1157. this.unselect(selected.first());
  1158. this.search.width(10);
  1159. killEvent(e);
  1160. return;
  1161. }
  1162. choices = selection.find(".select2-search-choice");
  1163. if (choices.length > 0) {
  1164. choices.last().addClass("select2-search-choice-focus");
  1165. }
  1166. } else {
  1167. selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
  1168. }
  1169. if (this.opened()) {
  1170. switch (e.which) {
  1171. case KEY.UP:
  1172. case KEY.DOWN:
  1173. this.moveHighlight((e.which === KEY.UP) ? -1 : 1);
  1174. killEvent(e);
  1175. return;
  1176. case KEY.ENTER:
  1177. case KEY.TAB:
  1178. this.selectHighlighted();
  1179. killEvent(e);
  1180. return;
  1181. case KEY.ESC:
  1182. this.cancel(e);
  1183. killEvent(e);
  1184. return;
  1185. }
  1186. }
  1187. if (e.which === KEY.TAB || KEY.isControl(e) || KEY.isFunctionKey(e) || e.which === KEY.BACKSPACE || e.which === KEY.ESC) {
  1188. return;
  1189. }
  1190. this.open();
  1191. if (e.which === KEY.PAGE_UP || e.which === KEY.PAGE_DOWN) {
  1192. // prevent the page from scrolling
  1193. killEvent(e);
  1194. }
  1195. }));
  1196. this.search.bind("keyup", this.bind(this.resizeSearch));
  1197. this.container.delegate(selector, "click", this.bind(function (e) {
  1198. if (!this.enabled) return;
  1199. this.open();
  1200. this.focusSearch();
  1201. e.preventDefault();
  1202. }));
  1203. this.container.delegate(selector, "focus", this.bind(function () {
  1204. if (!this.enabled) return;
  1205. this.container.addClass("select2-container-active");
  1206. this.dropdown.addClass("select2-drop-active");
  1207. this.clearPlaceholder();
  1208. }));
  1209. // set the placeholder if necessary
  1210. this.clearSearch();
  1211. },
  1212. // multi
  1213. enable: function() {
  1214. if (this.enabled) return;
  1215. this.parent.enable.apply(this, arguments);
  1216. this.search.show();
  1217. },
  1218. // multi
  1219. disable: function() {
  1220. if (!this.enabled) return;
  1221. this.parent.disable.apply(this, arguments);
  1222. this.search.hide();
  1223. },
  1224. // multi
  1225. initSelection: function () {
  1226. var data;
  1227. if (this.opts.element.val() === "") {
  1228. this.updateSelection([]);
  1229. }
  1230. if (this.select || this.opts.element.val() !== "") {
  1231. data = this.opts.initSelection.call(null, this.opts.element);
  1232. if (data !== undefined && data !== null) {
  1233. this.updateSelection(data);
  1234. }
  1235. }
  1236. this.close();
  1237. // set the placeholder if necessary
  1238. this.clearSearch();
  1239. },
  1240. // multi
  1241. clearSearch: function () {
  1242. var placeholder = this.getPlaceholder();
  1243. if (placeholder !== undefined && this.getVal().length === 0 && this.search.hasClass("select2-focused") === false) {
  1244. this.search.val(placeholder).addClass("select2-default");
  1245. // stretch the search box to full width of the container so as much of the placeholder is visible as possible
  1246. this.search.width(this.getContainerWidth());
  1247. } else {
  1248. this.search.val("").width(10);
  1249. }
  1250. },
  1251. // multi
  1252. clearPlaceholder: function () {
  1253. if (this.search.hasClass("select2-default")) {
  1254. this.search.val("").removeClass("select2-default");
  1255. }
  1256. },
  1257. // multi
  1258. open: function () {
  1259. if (this.opened()) return;
  1260. this.parent.open.apply(this, arguments);
  1261. this.clearPlaceholder();
  1262. this.resizeSearch();
  1263. this.focusSearch();
  1264. },
  1265. // multi
  1266. close: function () {
  1267. if (!this.opened()) return;
  1268. this.parent.close.apply(this, arguments);
  1269. },
  1270. // multi
  1271. focus: function () {
  1272. this.close();
  1273. this.search.focus();
  1274. },
  1275. // multi
  1276. isFocused: function () {
  1277. return this.search.hasClass("select2-focused");
  1278. },
  1279. // multi
  1280. updateSelection: function (data) {
  1281. var ids = [], filtered = [], self = this;
  1282. // filter out duplicates
  1283. $(data).each(function () {
  1284. if (indexOf(self.id(this), ids) < 0) {
  1285. ids.push(self.id(this));
  1286. filtered.push(this);
  1287. }
  1288. });
  1289. data = filtered;
  1290. this.selection.find(".select2-search-choice").remove();
  1291. $(data).each(function () {
  1292. self.addSelectedChoice(this);
  1293. });
  1294. self.postprocessResults();
  1295. },
  1296. // multi
  1297. onSelect: function (data) {
  1298. this.addSelectedChoice(data);
  1299. if (this.select) { this.postprocessResults(); }
  1300. if (this.opts.closeOnSelect) {
  1301. this.close();
  1302. this.search.width(10);
  1303. } else {
  1304. this.search.width(10);
  1305. this.resizeSearch();
  1306. }
  1307. // since its not possible to select an element that has already been
  1308. // added we do not need to check if this is a new element before firing change
  1309. this.triggerChange();
  1310. this.focusSearch();
  1311. },
  1312. // multi
  1313. cancel: function () {
  1314. this.close();
  1315. this.focusSearch();
  1316. },
  1317. // multi
  1318. addSelectedChoice: function (data) {
  1319. var choice,
  1320. id = this.id(data),
  1321. parts,
  1322. val = this.getVal();
  1323. parts = ["<li class='select2-search-choice'>",
  1324. this.opts.formatSelection(data),
  1325. "<a href='javascript:void(0)' class='select2-search-choice-close' tabindex='-1'></a>",
  1326. "</li>"
  1327. ];
  1328. choice = $(parts.join(""));
  1329. choice.find("a")
  1330. .bind("click dblclick", this.bind(function (e) {
  1331. if (!this.enabled) return;
  1332. this.unselect($(e.target));
  1333. this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
  1334. killEvent(e);
  1335. this.close();
  1336. this.focusSearch();
  1337. })).bind("focus", this.bind(function () {
  1338. if (!this.enabled) return;
  1339. this.container.addClass("select2-container-active");
  1340. this.dropdown.addClass("select2-drop-active");
  1341. }));
  1342. choice.data("select2-data", data);
  1343. choice.insertBefore(this.searchContainer);
  1344. val.push(id);
  1345. this.setVal(val);
  1346. },
  1347. // multi
  1348. unselect: function (selected) {
  1349. var val = this.getVal(),
  1350. index;
  1351. selected = selected.closest(".select2-search-choice");
  1352. if (selected.length === 0) {
  1353. throw "Invalid argument: " + selected + ". Must be .select2-search-choice";
  1354. }
  1355. index = indexOf(this.id(selected.data("select2-data")), val);
  1356. if (index >= 0) {
  1357. val.splice(index, 1);
  1358. this.setVal(val);
  1359. if (this.select) this.postprocessResults();
  1360. }
  1361. selected.remove();
  1362. this.triggerChange();
  1363. },
  1364. // multi
  1365. postprocessResults: function () {
  1366. var val = this.getVal(),
  1367. choices = this.results.find(".select2-result"),
  1368. self = this;
  1369. choices.each2(function (i, choice) {
  1370. var id = self.id(choice.data("select2-data"));
  1371. if (indexOf(id, val) >= 0) {
  1372. choice.addClass("select2-disabled");
  1373. } else {
  1374. choice.removeClass("select2-disabled");
  1375. }
  1376. });
  1377. choices.each2(function (i, choice) {
  1378. if (!choice.hasClass("select2-disabled")) {
  1379. self.highlight(i);
  1380. return false;
  1381. }
  1382. });
  1383. },
  1384. // multi
  1385. resizeSearch: function () {
  1386. var minimumWidth, left, maxWidth, containerLeft, searchWidth,
  1387. sideBorderPadding = getSideBorderPadding(this.search);
  1388. minimumWidth = measureTextWidth(this.search) + 10;
  1389. left = this.search.offset().left;
  1390. maxWidth = this.selection.width();
  1391. containerLeft = this.selection.offset().left;
  1392. searchWidth = maxWidth - (left - containerLeft) - sideBorderPadding;
  1393. if (searchWidth < minimumWidth) {
  1394. searchWidth = maxWidth - sideBorderPadding;
  1395. }
  1396. if (searchWidth < 40) {
  1397. searchWidth = maxWidth - sideBorderPadding;
  1398. }
  1399. this.search.width(searchWidth);
  1400. },
  1401. // multi
  1402. getVal: function () {
  1403. var val;
  1404. if (this.select) {
  1405. val = this.select.val();
  1406. return val === null ? [] : val;
  1407. } else {
  1408. val = this.opts.element.val();
  1409. return splitVal(val, ",");
  1410. }
  1411. },
  1412. // multi
  1413. setVal: function (val) {
  1414. var unique;
  1415. if (this.select) {
  1416. this.select.val(val);
  1417. } else {
  1418. unique = [];
  1419. // filter out duplicates
  1420. $(val).each(function () {
  1421. if (indexOf(this, unique) < 0) unique.push(this);
  1422. });
  1423. this.opts.element.val(unique.length === 0 ? "" : unique.join(","));
  1424. }
  1425. },
  1426. // multi
  1427. val: function () {
  1428. var val, data = [], self=this;
  1429. if (arguments.length === 0) {
  1430. return this.getVal();
  1431. }
  1432. val = arguments[0];
  1433. if (this.select) {
  1434. // val is a list of ids
  1435. this.setVal(val);
  1436. this.select.find(":selected").each(function () {
  1437. data.push({id: $(this).attr("value"), text: $(this).text()});
  1438. });
  1439. this.updateSelection(data);
  1440. } else {
  1441. val = (val === null) ? [] : val;
  1442. this.setVal(val);
  1443. // val is a list of objects
  1444. $(val).each(function () { data.push(self.id(this)); });
  1445. this.setVal(data);
  1446. this.updateSelection(val);
  1447. }
  1448. this.clearSearch();
  1449. },
  1450. // multi
  1451. onSortStart: function() {
  1452. if (this.select) {
  1453. throw new Error("Sorting of elements is not supported when attached to <select>. Attach to <input type='hidden'/> instead.");
  1454. }
  1455. // collapse search field into 0 width so its container can be collapsed as well
  1456. this.search.width(0);
  1457. // hide the container
  1458. this.searchContainer.hide();
  1459. },
  1460. // multi
  1461. onSortEnd:function() {
  1462. var val=[], self=this;
  1463. // show search and move it to the end of the list
  1464. this.searchContainer.show();
  1465. // make sure the search container is the last item in the list
  1466. this.searchContainer.appendTo(this.searchContainer.parent());
  1467. // since we collapsed the width in dragStarteed, we resize it here
  1468. this.resizeSearch();
  1469. // update selection
  1470. this.selection.find(".select2-search-choice").each(function() {
  1471. val.push(self.opts.id($(this).data("select2-data")));
  1472. });
  1473. this.setVal(val);
  1474. this.triggerChange();
  1475. }
  1476. });
  1477. $.fn.select2 = function () {
  1478. var args = Array.prototype.slice.call(arguments, 0),
  1479. opts,
  1480. select2,
  1481. value, multiple, allowedMethods = ["val", "destroy", "open", "close", "focus", "isFocused", "container", "onSortStart", "onSortEnd", "enable", "disable", "positionDropdown"];
  1482. this.each(function () {
  1483. if (args.length === 0 || typeof(args[0]) === "object") {
  1484. opts = args.length === 0 ? {} : $.extend({}, args[0]);
  1485. opts.element = $(this);
  1486. if (opts.element.get(0).tagName.toLowerCase() === "select") {
  1487. multiple = opts.element.attr("multiple");
  1488. } else {
  1489. multiple = opts.multiple || false;
  1490. if ("tags" in opts) {opts.multiple = multiple = true;}
  1491. }
  1492. select2 = multiple ? new MultiSelect2() : new SingleSelect2();
  1493. select2.init(opts);
  1494. } else if (typeof(args[0]) === "string") {
  1495. if (indexOf(args[0], allowedMethods) < 0) {
  1496. throw "Unknown method: " + args[0];
  1497. }
  1498. value = undefined;
  1499. select2 = $(this).data("select2");
  1500. if (select2 === undefined) return;
  1501. if (args[0] === "container") {
  1502. value=select2.container;
  1503. } else {
  1504. value = select2[args[0]].apply(select2, args.slice(1));
  1505. }
  1506. if (value !== undefined) {return false;}
  1507. } else {
  1508. throw "Invalid arguments to select2 plugin: " + args;
  1509. }
  1510. });
  1511. return (value === undefined) ? this : value;
  1512. };
  1513. // exports
  1514. window.Select2 = {
  1515. query: {
  1516. ajax: ajax,
  1517. local: local,
  1518. tags: tags
  1519. }, util: {
  1520. debounce: debounce,
  1521. markMatch: markMatch
  1522. }, "class": {
  1523. "abstract": AbstractSelect2,
  1524. "single": SingleSelect2,
  1525. "multi": MultiSelect2
  1526. }
  1527. };
  1528. }(jQuery));