1 | /* |
---|
2 | * Autocomplete - jQuery plugin 1.0.2 |
---|
3 | * |
---|
4 | * Copyright (c) 2007 Dylan Verheul, Dan G. Switzer, Anjesh Tuladhar, Jテカrn Zaefferer |
---|
5 | * |
---|
6 | * Dual licensed under the MIT and GPL licenses: |
---|
7 | * http://www.opensource.org/licenses/mit-license.php |
---|
8 | * http://www.gnu.org/licenses/gpl.html |
---|
9 | * |
---|
10 | * Revision: $Id: jquery.autocomplete.js 5747 2008-06-25 18:30:55Z joern.zaefferer $ |
---|
11 | * |
---|
12 | */ |
---|
13 | |
---|
14 | String.prototype.endsWith = function(str) {return (this.match(str+"$")==str)} |
---|
15 | |
---|
16 | // JG HACK: each autocomplete object should have its own return_key flag. |
---|
17 | var return_key_pressed_for_autocomplete = false; |
---|
18 | |
---|
19 | ;(function($) { |
---|
20 | |
---|
21 | $.fn.extend({ |
---|
22 | autocomplete: function(urlOrData, options) { |
---|
23 | var isUrl = typeof urlOrData == "string"; |
---|
24 | options = $.extend({}, $.Autocompleter.defaults, { |
---|
25 | url: isUrl ? urlOrData : null, |
---|
26 | data: isUrl ? null : urlOrData, |
---|
27 | delay: isUrl ? $.Autocompleter.defaults.delay : 10, |
---|
28 | max: options && !options.scroll ? 10 : 150 |
---|
29 | }, options); |
---|
30 | |
---|
31 | // if highlight is set to false, replace it with a do-nothing function |
---|
32 | options.highlight = options.highlight || function(value) { return value; }; |
---|
33 | |
---|
34 | // if the formatMatch option is not specified, then use formatItem for backwards compatibility |
---|
35 | options.formatMatch = options.formatMatch || options.formatItem; |
---|
36 | |
---|
37 | return this.each(function() { |
---|
38 | new $.Autocompleter(this, options); |
---|
39 | }); |
---|
40 | }, |
---|
41 | result: function(handler) { |
---|
42 | return this.bind("result", handler); |
---|
43 | }, |
---|
44 | search: function(handler) { |
---|
45 | return this.trigger("search", [handler]); |
---|
46 | }, |
---|
47 | flushCache: function() { |
---|
48 | return this.trigger("flushCache"); |
---|
49 | }, |
---|
50 | setOptions: function(options){ |
---|
51 | return this.trigger("setOptions", [options]); |
---|
52 | }, |
---|
53 | unautocomplete: function() { |
---|
54 | return this.trigger("unautocomplete"); |
---|
55 | }, |
---|
56 | // JG: add method to show all data in cache. |
---|
57 | showAllInCache: function() { |
---|
58 | return this.trigger("showAllInCache"); |
---|
59 | } |
---|
60 | }); |
---|
61 | |
---|
62 | $.Autocompleter = function(input, options) { |
---|
63 | |
---|
64 | var KEY = { |
---|
65 | UP: 38, |
---|
66 | DOWN: 40, |
---|
67 | DEL: 46, |
---|
68 | TAB: 9, |
---|
69 | RETURN: 13, |
---|
70 | ESC: 27, |
---|
71 | COMMA: 188, |
---|
72 | PAGEUP: 33, |
---|
73 | PAGEDOWN: 34, |
---|
74 | BACKSPACE: 8, |
---|
75 | COLON: 16 |
---|
76 | }; |
---|
77 | |
---|
78 | // Create $ object for input element |
---|
79 | var $input = $(input).attr("autocomplete", "off").addClass(options.inputClass); |
---|
80 | |
---|
81 | var timeout; |
---|
82 | var previousValue = ""; |
---|
83 | var cache = $.Autocompleter.Cache(options); |
---|
84 | var hasFocus = 0; |
---|
85 | var lastKeyPressCode; |
---|
86 | var config = { |
---|
87 | mouseDownOnSelect: false |
---|
88 | }; |
---|
89 | var select = $.Autocompleter.Select(options, input, selectCurrent, config); |
---|
90 | |
---|
91 | var blockSubmit; |
---|
92 | |
---|
93 | // prevent form submit in opera when selecting with return key |
---|
94 | $.browser.opera && $(input.form).bind("submit.autocomplete", function() { |
---|
95 | if (blockSubmit) { |
---|
96 | blockSubmit = false; |
---|
97 | return false; |
---|
98 | } |
---|
99 | }); |
---|
100 | |
---|
101 | // Firefox only triggers holding down a key with keypress |
---|
102 | $input.bind(($.browser.mozilla ? "keypress" : "keydown") + ".autocomplete", function(event) { |
---|
103 | // track last key pressed |
---|
104 | lastKeyPressCode = event.keyCode; |
---|
105 | switch(event.keyCode) { |
---|
106 | |
---|
107 | case KEY.UP: |
---|
108 | event.preventDefault(); |
---|
109 | if ( select.visible() ) { |
---|
110 | select.prev(); |
---|
111 | } else { |
---|
112 | onChange(0, true); |
---|
113 | } |
---|
114 | break; |
---|
115 | |
---|
116 | case KEY.DOWN: |
---|
117 | event.preventDefault(); |
---|
118 | if ( select.visible() ) { |
---|
119 | select.next(); |
---|
120 | } else { |
---|
121 | onChange(0, true); |
---|
122 | } |
---|
123 | break; |
---|
124 | |
---|
125 | case KEY.PAGEUP: |
---|
126 | event.preventDefault(); |
---|
127 | if ( select.visible() ) { |
---|
128 | select.pageUp(); |
---|
129 | } else { |
---|
130 | onChange(0, true); |
---|
131 | } |
---|
132 | break; |
---|
133 | |
---|
134 | case KEY.PAGEDOWN: |
---|
135 | event.preventDefault(); |
---|
136 | if ( select.visible() ) { |
---|
137 | select.pageDown(); |
---|
138 | } else { |
---|
139 | onChange(0, true); |
---|
140 | } |
---|
141 | break; |
---|
142 | |
---|
143 | // matches also semicolon |
---|
144 | case options.multiple && $.trim(options.multipleSeparator) == "," && KEY.COMMA: |
---|
145 | case KEY.TAB: |
---|
146 | case KEY.RETURN: |
---|
147 | if (event.keyCode == KEY.RETURN) |
---|
148 | return_key_pressed_for_autocomplete = false; |
---|
149 | if( selectCurrent() ) { |
---|
150 | // stop default to prevent a form submit, Opera needs special handling |
---|
151 | event.preventDefault(); |
---|
152 | blockSubmit = true; |
---|
153 | |
---|
154 | // JG: set flag to indicate that a selection just occurred using the return key. FYI: |
---|
155 | // event.stopPropagation() does not work. |
---|
156 | if (event.keyCode == KEY.RETURN) |
---|
157 | return_key_pressed_for_autocomplete = true; |
---|
158 | |
---|
159 | return false; |
---|
160 | } |
---|
161 | |
---|
162 | case KEY.ESC: |
---|
163 | select.hide(); |
---|
164 | break; |
---|
165 | case KEY.COLON: |
---|
166 | break; |
---|
167 | |
---|
168 | default: |
---|
169 | clearTimeout(timeout); |
---|
170 | timeout = setTimeout(onChange, options.delay); |
---|
171 | break; |
---|
172 | } |
---|
173 | }).focus(function(){ |
---|
174 | // track whether the field has focus, we shouldn't process any |
---|
175 | // results if the field no longer has focus |
---|
176 | hasFocus++; |
---|
177 | }).blur(function() { |
---|
178 | hasFocus = 0; |
---|
179 | if (!config.mouseDownOnSelect) { |
---|
180 | // JG: if blur and user is not selecting with mouse, hide |
---|
181 | // object. |
---|
182 | select.hide(); |
---|
183 | } |
---|
184 | return this; |
---|
185 | }).click(function() { |
---|
186 | // show select when clicking in a focused field |
---|
187 | if ( hasFocus++ > 1 && !select.visible() ) { |
---|
188 | onChange(0, true); |
---|
189 | } |
---|
190 | return this; |
---|
191 | }).bind("search", function() { |
---|
192 | // TODO why not just specifying both arguments? |
---|
193 | var fn = (arguments.length > 1) ? arguments[1] : null; |
---|
194 | function findValueCallback(q, data) { |
---|
195 | var result; |
---|
196 | if( data && data.length ) { |
---|
197 | for (var i=0; i < data.length; i++) { |
---|
198 | if( data[i].result.toLowerCase() == q.toLowerCase() ) { |
---|
199 | result = data[i]; |
---|
200 | break; |
---|
201 | } |
---|
202 | } |
---|
203 | } |
---|
204 | if( typeof fn == "function" ) fn(result); |
---|
205 | else $input.trigger("result", result && [result.data, result.value]); |
---|
206 | } |
---|
207 | $.each(trimWords($input.val()), function(i, value) { |
---|
208 | request(value, findValueCallback, findValueCallback); |
---|
209 | }); |
---|
210 | |
---|
211 | return this; |
---|
212 | }).bind("flushCache", function() { |
---|
213 | cache.flush(); |
---|
214 | }).bind("setOptions", function() { |
---|
215 | $.extend(options, arguments[1]); |
---|
216 | // if we've updated the data, repopulate |
---|
217 | if ( "data" in arguments[1] ) |
---|
218 | cache.populate(); |
---|
219 | }).bind("unautocomplete", function() { |
---|
220 | select.unbind(); |
---|
221 | $input.unbind(); |
---|
222 | $(input.form).unbind(".autocomplete"); |
---|
223 | }) |
---|
224 | // JG: Show all data in cache. |
---|
225 | .bind("showAllInCache", function() { |
---|
226 | receiveData('', cache.load('')); |
---|
227 | }); |
---|
228 | |
---|
229 | function selectCurrent() { |
---|
230 | var selected = select.selected(); |
---|
231 | if( !selected ) |
---|
232 | return false; |
---|
233 | |
---|
234 | var v = selected.result; |
---|
235 | previousValue = v; |
---|
236 | |
---|
237 | if ( options.multiple ) { |
---|
238 | var words = trimWords($input.val()); |
---|
239 | if ( words.length > 1 ) { |
---|
240 | v = words.slice(0, words.length - 1).join( options.multipleSeparator ) + options.multipleSeparator + v; |
---|
241 | } |
---|
242 | v += options.multipleSeparator; |
---|
243 | } |
---|
244 | |
---|
245 | $input.val(v); |
---|
246 | hideResultsNow(); |
---|
247 | $input.trigger("result", [selected.data, selected.value]); |
---|
248 | return true; |
---|
249 | } |
---|
250 | |
---|
251 | function onChange(crap, skipPrevCheck) { |
---|
252 | if( lastKeyPressCode == KEY.DEL ) { |
---|
253 | select.hide(); |
---|
254 | return; |
---|
255 | } |
---|
256 | |
---|
257 | var currentValue = $input.val(); |
---|
258 | |
---|
259 | if ( !skipPrevCheck && currentValue == previousValue ) |
---|
260 | return; |
---|
261 | |
---|
262 | previousValue = currentValue; |
---|
263 | |
---|
264 | currentValue = lastWord(currentValue); |
---|
265 | if ( currentValue.length >= options.minChars) { |
---|
266 | $input.addClass(options.loadingClass); |
---|
267 | if (!options.matchCase) |
---|
268 | currentValue = currentValue.toLowerCase(); |
---|
269 | request(currentValue, receiveData, hideResultsNow); |
---|
270 | } else { |
---|
271 | stopLoading(); |
---|
272 | select.hide(); |
---|
273 | } |
---|
274 | }; |
---|
275 | |
---|
276 | function trimWords(value) { |
---|
277 | if ( !value ) { |
---|
278 | return [""]; |
---|
279 | } |
---|
280 | var words = value.split( options.multipleSeparator ); |
---|
281 | var result = []; |
---|
282 | $.each(words, function(i, value) { |
---|
283 | if ( $.trim(value) ) |
---|
284 | result[i] = $.trim(value); |
---|
285 | }); |
---|
286 | return result; |
---|
287 | } |
---|
288 | |
---|
289 | function lastWord(value) { |
---|
290 | if ( !options.multiple ) |
---|
291 | return value; |
---|
292 | var words = trimWords(value); |
---|
293 | return words[words.length - 1]; |
---|
294 | } |
---|
295 | |
---|
296 | // fills in the input box w/the first match (assumed to be the best match) |
---|
297 | // q: the term entered |
---|
298 | // sValue: the first matching result |
---|
299 | function autoFill(q, sValue){ |
---|
300 | // autofill in the complete box w/the first match as long as the user hasn't entered in more data |
---|
301 | // if the last user key pressed was backspace, don't autofill |
---|
302 | if( options.autoFill && (lastWord($input.val()).toLowerCase() == q.toLowerCase()) && lastKeyPressCode != KEY.BACKSPACE ) { |
---|
303 | // fill in the value (keep the case the user has typed) |
---|
304 | $input.val($input.val() + sValue.substring(lastWord(previousValue).length)); |
---|
305 | // select the portion of the value not typed by the user (so the next character will erase) |
---|
306 | $.Autocompleter.Selection(input, previousValue.length, previousValue.length + sValue.length); |
---|
307 | } |
---|
308 | }; |
---|
309 | |
---|
310 | function hideResults() { |
---|
311 | clearTimeout(timeout); |
---|
312 | timeout = setTimeout(hideResultsNow, 200); |
---|
313 | }; |
---|
314 | |
---|
315 | function hideResultsNow() { |
---|
316 | var wasVisible = select.visible(); |
---|
317 | select.hide(); |
---|
318 | clearTimeout(timeout); |
---|
319 | stopLoading(); |
---|
320 | if (options.mustMatch) { |
---|
321 | // call search and run callback |
---|
322 | $input.search( |
---|
323 | function (result){ |
---|
324 | // if no value found, clear the input box |
---|
325 | if( !result ) { |
---|
326 | if (options.multiple) { |
---|
327 | var words = trimWords($input.val()).slice(0, -1); |
---|
328 | $input.val( words.join(options.multipleSeparator) + (words.length ? options.multipleSeparator : "") ); |
---|
329 | } |
---|
330 | else |
---|
331 | $input.val( "" ); |
---|
332 | } |
---|
333 | } |
---|
334 | ); |
---|
335 | } |
---|
336 | if (wasVisible) |
---|
337 | // position cursor at end of input field |
---|
338 | $.Autocompleter.Selection(input, input.value.length, input.value.length); |
---|
339 | }; |
---|
340 | |
---|
341 | function receiveData(q, data) { |
---|
342 | if ( data && data.length && hasFocus ) { |
---|
343 | stopLoading(); |
---|
344 | select.display(data, q); |
---|
345 | autoFill(q, data[0].value); |
---|
346 | select.show(); |
---|
347 | } else { |
---|
348 | hideResultsNow(); |
---|
349 | } |
---|
350 | }; |
---|
351 | |
---|
352 | function request(term, success, failure) { |
---|
353 | if (!options.matchCase) |
---|
354 | term = term.toLowerCase(); |
---|
355 | var data = cache.load(term); |
---|
356 | |
---|
357 | // JG: hack: if term ends with ':', kill data to force an ajax request. |
---|
358 | if (term.endsWith(":")) |
---|
359 | data = null; |
---|
360 | |
---|
361 | // recieve the cached data |
---|
362 | if (data && data.length) { |
---|
363 | success(term, data); |
---|
364 | // if an AJAX url has been supplied, try loading the data now |
---|
365 | } else if( (typeof options.url == "string") && (options.url.length > 0) ){ |
---|
366 | var extraParams = { |
---|
367 | timestamp: +new Date() |
---|
368 | }; |
---|
369 | $.each(options.extraParams, function(key, param) { |
---|
370 | extraParams[key] = typeof param == "function" ? param() : param; |
---|
371 | }); |
---|
372 | |
---|
373 | $.ajax({ |
---|
374 | // try to leverage ajaxQueue plugin to abort previous requests |
---|
375 | mode: "abort", |
---|
376 | // limit abortion to this input |
---|
377 | port: "autocomplete" + input.name, |
---|
378 | dataType: options.dataType, |
---|
379 | url: options.url, |
---|
380 | data: $.extend({ |
---|
381 | q: lastWord(term), |
---|
382 | limit: options.max |
---|
383 | }, extraParams), |
---|
384 | success: function(data) { |
---|
385 | var parsed = options.parse && options.parse(data) || parse(data); |
---|
386 | cache.add(term, parsed); |
---|
387 | success(term, parsed); |
---|
388 | } |
---|
389 | }); |
---|
390 | } else { |
---|
391 | // if we have a failure, we need to empty the list -- this prevents the the [TAB] key from selecting the last successful match |
---|
392 | select.emptyList(); |
---|
393 | failure(term); |
---|
394 | } |
---|
395 | }; |
---|
396 | |
---|
397 | function parse(data) { |
---|
398 | var parsed = []; |
---|
399 | var rows = data.split("\n"); |
---|
400 | for (var i=0; i < rows.length; i++) { |
---|
401 | var row = $.trim(rows[i]); |
---|
402 | if (row) { |
---|
403 | row = row.split("|"); |
---|
404 | parsed[parsed.length] = { |
---|
405 | data: row, |
---|
406 | value: row[0], |
---|
407 | result: options.formatResult && options.formatResult(row, row[0]) || row[0] |
---|
408 | }; |
---|
409 | } |
---|
410 | } |
---|
411 | return parsed; |
---|
412 | }; |
---|
413 | |
---|
414 | function stopLoading() { |
---|
415 | $input.removeClass(options.loadingClass); |
---|
416 | }; |
---|
417 | |
---|
418 | }; |
---|
419 | |
---|
420 | $.Autocompleter.defaults = { |
---|
421 | inputClass: "ac_input", |
---|
422 | resultsClass: "ac_results", |
---|
423 | loadingClass: "ac_loading", |
---|
424 | minChars: 1, |
---|
425 | delay: 400, |
---|
426 | matchCase: false, |
---|
427 | matchSubset: true, |
---|
428 | matchContains: false, |
---|
429 | cacheLength: 10, |
---|
430 | max: 100, |
---|
431 | mustMatch: false, |
---|
432 | extraParams: {}, |
---|
433 | selectFirst: true, |
---|
434 | formatItem: function(row) { return row[0]; }, |
---|
435 | formatMatch: null, |
---|
436 | autoFill: false, |
---|
437 | width: 0, |
---|
438 | multiple: false, |
---|
439 | multipleSeparator: ", ", |
---|
440 | highlight: function(value, term) { |
---|
441 | // JG: short-circuit highlighting if term is empty string. |
---|
442 | if (term == "") |
---|
443 | return value; |
---|
444 | return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>"); |
---|
445 | }, |
---|
446 | scroll: true, |
---|
447 | scrollHeight: 180 |
---|
448 | }; |
---|
449 | |
---|
450 | $.Autocompleter.Cache = function(options) { |
---|
451 | |
---|
452 | var data = {}; |
---|
453 | var length = 0; |
---|
454 | |
---|
455 | function matchSubset(s, sub) { |
---|
456 | if (!options.matchCase) |
---|
457 | s = s.toLowerCase(); |
---|
458 | var i = s.indexOf(sub); |
---|
459 | if (i == -1) return false; |
---|
460 | return i == 0 || options.matchContains; |
---|
461 | }; |
---|
462 | |
---|
463 | function add(q, value) { |
---|
464 | if (length > options.cacheLength){ |
---|
465 | flush(); |
---|
466 | } |
---|
467 | if (!data[q]){ |
---|
468 | length++; |
---|
469 | } |
---|
470 | data[q] = value; |
---|
471 | } |
---|
472 | |
---|
473 | function populate(){ |
---|
474 | if( !options.data ) return false; |
---|
475 | // track the matches |
---|
476 | var stMatchSets = {}, |
---|
477 | nullData = 0; |
---|
478 | |
---|
479 | // no url was specified, we need to adjust the cache length to make sure it fits the local data store |
---|
480 | if( !options.url ) options.cacheLength = 1; |
---|
481 | |
---|
482 | // track all options for minChars = 0 |
---|
483 | stMatchSets[""] = []; |
---|
484 | |
---|
485 | // loop through the array and create a lookup structure |
---|
486 | for ( var i = 0, ol = options.data.length; i < ol; i++ ) { |
---|
487 | var rawValue = options.data[i]; |
---|
488 | // if rawValue is a string, make an array otherwise just reference the array |
---|
489 | rawValue = (typeof rawValue == "string") ? [rawValue] : rawValue; |
---|
490 | |
---|
491 | var value = options.formatMatch(rawValue, i+1, options.data.length); |
---|
492 | if ( value === false ) |
---|
493 | continue; |
---|
494 | |
---|
495 | if( !stMatchSets[value] ) { |
---|
496 | stMatchSets[value] = []; |
---|
497 | } |
---|
498 | |
---|
499 | // if the match is a string |
---|
500 | var row = { |
---|
501 | value: value, |
---|
502 | data: rawValue, |
---|
503 | result: options.formatResult && options.formatResult(rawValue) || value |
---|
504 | }; |
---|
505 | |
---|
506 | // push the current match into the set list |
---|
507 | stMatchSets[value].push(row); |
---|
508 | |
---|
509 | // keep track of minChars zero items |
---|
510 | if ( nullData++ < options.max ) { |
---|
511 | stMatchSets[""].push(row); |
---|
512 | } |
---|
513 | }; |
---|
514 | |
---|
515 | // add the data items to the cache |
---|
516 | $.each(stMatchSets, function(i, value) { |
---|
517 | // increase the cache size |
---|
518 | options.cacheLength++; |
---|
519 | // add to the cache |
---|
520 | add(i, value); |
---|
521 | }); |
---|
522 | } |
---|
523 | |
---|
524 | // populate any existing data |
---|
525 | setTimeout(populate, 25); |
---|
526 | |
---|
527 | function flush(){ |
---|
528 | data = {}; |
---|
529 | length = 0; |
---|
530 | } |
---|
531 | |
---|
532 | return { |
---|
533 | flush: flush, |
---|
534 | add: add, |
---|
535 | populate: populate, |
---|
536 | load: function(q) { |
---|
537 | if (!options.cacheLength || !length) |
---|
538 | return null; |
---|
539 | |
---|
540 | /* |
---|
541 | * if dealing w/local data and matchContains than we must make sure |
---|
542 | * to loop through all the data collections looking for matches |
---|
543 | */ |
---|
544 | if( !options.url && options.matchContains ) { |
---|
545 | // track all matches |
---|
546 | var csub = []; |
---|
547 | // loop through all the data grids for matches |
---|
548 | for( var k in data ) { |
---|
549 | // don't search through the stMatchSets[""] (minChars: 0) cache |
---|
550 | // this prevents duplicates |
---|
551 | if( k.length > 0 ){ |
---|
552 | var c = data[k]; |
---|
553 | $.each(c, function(i, x) { |
---|
554 | // if we've got a match, add it to the array |
---|
555 | if (matchSubset(x.value, q)) { |
---|
556 | csub.push(x); |
---|
557 | } |
---|
558 | }); |
---|
559 | } |
---|
560 | } |
---|
561 | return csub; |
---|
562 | } else |
---|
563 | // if the exact item exists, use it |
---|
564 | if (data[q]) { |
---|
565 | return data[q]; |
---|
566 | } else |
---|
567 | if (options.matchSubset) { |
---|
568 | for (var i = q.length - 1; i >= options.minChars; i--) { |
---|
569 | var c = data[q.substr(0, i)]; |
---|
570 | if (c) { |
---|
571 | var csub = []; |
---|
572 | $.each(c, function(i, x) { |
---|
573 | if ( (x.data.indexOf("#Header") == 0) || |
---|
574 | (matchSubset(x.value, q)) ) { |
---|
575 | csub[csub.length] = x; |
---|
576 | } |
---|
577 | }); |
---|
578 | return csub; |
---|
579 | } |
---|
580 | } |
---|
581 | |
---|
582 | } |
---|
583 | return null; |
---|
584 | } |
---|
585 | }; |
---|
586 | }; |
---|
587 | |
---|
588 | $.Autocompleter.Select = function (options, input, select, config) { |
---|
589 | var CLASSES = { |
---|
590 | ACTIVE: "ac_over" |
---|
591 | }; |
---|
592 | |
---|
593 | var listItems, |
---|
594 | active = -1, |
---|
595 | data, |
---|
596 | term = "", |
---|
597 | needsInit = true, |
---|
598 | element, |
---|
599 | list; |
---|
600 | |
---|
601 | // Create results |
---|
602 | function init() { |
---|
603 | if (!needsInit) |
---|
604 | return; |
---|
605 | |
---|
606 | element = $("<div/>") |
---|
607 | .hide() |
---|
608 | .addClass(options.resultsClass) |
---|
609 | .css("position", "absolute") |
---|
610 | .bind("mouseleave", function() { |
---|
611 | element.hide(); |
---|
612 | }) |
---|
613 | .appendTo(document.body); |
---|
614 | |
---|
615 | list = $("<ul/>").appendTo(element).mouseover( function(event) { |
---|
616 | if(target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') { |
---|
617 | active = $("li", list).removeClass(CLASSES.ACTIVE).index(target(event)); |
---|
618 | // JG: Only add active class if target is not a header. |
---|
619 | if (!headerAtPosition(active)) |
---|
620 | $(target(event)).addClass(CLASSES.ACTIVE); |
---|
621 | } |
---|
622 | }).click(function(event) { |
---|
623 | // JG: Ignore click on header. |
---|
624 | active = $("li", list).index(target(event)); |
---|
625 | if (headerAtPosition(active)) |
---|
626 | return; |
---|
627 | |
---|
628 | // Handle click on autocomplete options. |
---|
629 | $(target(event)).addClass(CLASSES.ACTIVE); |
---|
630 | select(); |
---|
631 | // TODO provide option to avoid setting focus again after selection? useful for cleanup-on-focus |
---|
632 | input.focus(); |
---|
633 | return false; |
---|
634 | }).mousedown(function() { |
---|
635 | config.mouseDownOnSelect = true; |
---|
636 | }).mouseup(function() { |
---|
637 | config.mouseDownOnSelect = false; |
---|
638 | }); |
---|
639 | |
---|
640 | if( options.width > 0 ) |
---|
641 | element.css("width", options.width); |
---|
642 | |
---|
643 | needsInit = false; |
---|
644 | } |
---|
645 | |
---|
646 | function target(event) { |
---|
647 | var element = event.target; |
---|
648 | while(element && element.tagName != "LI") |
---|
649 | element = element.parentNode; |
---|
650 | // more fun with IE, sometimes event.target is empty, just ignore it then |
---|
651 | if(!element) |
---|
652 | return []; |
---|
653 | return element; |
---|
654 | } |
---|
655 | |
---|
656 | // JG: Returns true iff there is a header element at the given position. |
---|
657 | function headerAtPosition(position) { |
---|
658 | dataAtPosition = data[position].data; |
---|
659 | return (dataAtPosition[0].indexOf("#Header") == 0); |
---|
660 | } |
---|
661 | |
---|
662 | function moveSelect(step) { |
---|
663 | listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE); |
---|
664 | // JG: while active item is a header, continue stepping. |
---|
665 | var isHeader = false; |
---|
666 | do { |
---|
667 | movePosition(step); |
---|
668 | isHeader = headerAtPosition(active); |
---|
669 | } |
---|
670 | while (isHeader); |
---|
671 | var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE); |
---|
672 | |
---|
673 | if(options.scroll) { |
---|
674 | var offset = 0; |
---|
675 | listItems.slice(0, active).each(function() { |
---|
676 | offset += this.offsetHeight; |
---|
677 | }); |
---|
678 | if((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) { |
---|
679 | list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight()); |
---|
680 | } else if(offset < list.scrollTop()) { |
---|
681 | list.scrollTop(offset); |
---|
682 | } |
---|
683 | } |
---|
684 | }; |
---|
685 | |
---|
686 | function movePosition(step) { |
---|
687 | active += step; |
---|
688 | if (active < 0) { |
---|
689 | active = listItems.size() - 1; |
---|
690 | } else if (active >= listItems.size()) { |
---|
691 | active = 0; |
---|
692 | } |
---|
693 | } |
---|
694 | |
---|
695 | function limitNumberOfItems(available) { |
---|
696 | return options.max && options.max < available |
---|
697 | ? options.max |
---|
698 | : available; |
---|
699 | } |
---|
700 | |
---|
701 | function fillList() { |
---|
702 | list.empty(); |
---|
703 | var max = limitNumberOfItems(data.length); |
---|
704 | for (var i=0; i < max; i++) { |
---|
705 | if (!data[i]) |
---|
706 | continue; |
---|
707 | |
---|
708 | var formatted = options.formatItem(data[i].data, i+1, max, data[i].value, term); |
---|
709 | if ( formatted === false ) |
---|
710 | continue; |
---|
711 | |
---|
712 | // JG: Build list item by formatting the item and choosing a CSS class. |
---|
713 | if (headerAtPosition(i)) { |
---|
714 | // Found header element; only add header if there are subsequent elements. |
---|
715 | if (i != max-1) |
---|
716 | var li = $("<li/>").html(data[i].data[1]).addClass("ac_header").appendTo(list)[0]; |
---|
717 | } else { |
---|
718 | // Found completion element. |
---|
719 | var li = $("<li/>").html(options.highlight(formatted, term)).addClass(i%2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0]; |
---|
720 | } |
---|
721 | |
---|
722 | $.data(li, "ac_data", data[i]); |
---|
723 | } |
---|
724 | listItems = list.find("li"); |
---|
725 | if ( options.selectFirst ) { |
---|
726 | listItems.slice(0, 1).addClass(CLASSES.ACTIVE); |
---|
727 | active = 0; |
---|
728 | } |
---|
729 | // apply bgiframe if available |
---|
730 | if ( $.fn.bgiframe ) |
---|
731 | list.bgiframe(); |
---|
732 | } |
---|
733 | |
---|
734 | return { |
---|
735 | display: function(d, q) { |
---|
736 | init(); |
---|
737 | data = d; |
---|
738 | term = q; |
---|
739 | fillList(); |
---|
740 | }, |
---|
741 | next: function() { |
---|
742 | moveSelect(1); |
---|
743 | }, |
---|
744 | prev: function() { |
---|
745 | moveSelect(-1); |
---|
746 | }, |
---|
747 | pageUp: function() { |
---|
748 | if (active != 0 && active - 8 < 0) { |
---|
749 | moveSelect( -active ); |
---|
750 | } else { |
---|
751 | moveSelect(-8); |
---|
752 | } |
---|
753 | }, |
---|
754 | pageDown: function() { |
---|
755 | if (active != listItems.size() - 1 && active + 8 > listItems.size()) { |
---|
756 | moveSelect( listItems.size() - 1 - active ); |
---|
757 | } else { |
---|
758 | moveSelect(8); |
---|
759 | } |
---|
760 | }, |
---|
761 | hide: function() { |
---|
762 | element && element.hide(); |
---|
763 | listItems && listItems.removeClass(CLASSES.ACTIVE); |
---|
764 | active = -1; |
---|
765 | }, |
---|
766 | visible : function() { |
---|
767 | return element && element.is(":visible"); |
---|
768 | }, |
---|
769 | current: function() { |
---|
770 | return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0]); |
---|
771 | }, |
---|
772 | show: function() { |
---|
773 | var offset = $(input).offset(); |
---|
774 | element.css({ |
---|
775 | width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(), |
---|
776 | top: offset.top + input.offsetHeight, |
---|
777 | left: offset.left |
---|
778 | }).show(); |
---|
779 | if(options.scroll) { |
---|
780 | list.scrollTop(0); |
---|
781 | list.css({ |
---|
782 | maxHeight: options.scrollHeight, |
---|
783 | overflow: 'auto' |
---|
784 | }); |
---|
785 | |
---|
786 | if($.browser.msie && typeof document.body.style.maxHeight === "undefined") { |
---|
787 | var listHeight = 0; |
---|
788 | listItems.each(function() { |
---|
789 | listHeight += this.offsetHeight; |
---|
790 | }); |
---|
791 | var scrollbarsVisible = listHeight > options.scrollHeight; |
---|
792 | list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight ); |
---|
793 | if (!scrollbarsVisible) { |
---|
794 | // IE doesn't recalculate width when scrollbar disappears |
---|
795 | listItems.width( list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")) ); |
---|
796 | } |
---|
797 | } |
---|
798 | |
---|
799 | } |
---|
800 | }, |
---|
801 | selected: function() { |
---|
802 | var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE); |
---|
803 | return selected && selected.length && $.data(selected[0], "ac_data"); |
---|
804 | }, |
---|
805 | emptyList: function (){ |
---|
806 | list && list.empty(); |
---|
807 | }, |
---|
808 | unbind: function() { |
---|
809 | element && element.remove(); |
---|
810 | } |
---|
811 | }; |
---|
812 | }; |
---|
813 | |
---|
814 | $.Autocompleter.Selection = function(field, start, end) { |
---|
815 | if( field.createTextRange ){ |
---|
816 | var selRange = field.createTextRange(); |
---|
817 | selRange.collapse(true); |
---|
818 | selRange.moveStart("character", start); |
---|
819 | selRange.moveEnd("character", end); |
---|
820 | selRange.select(); |
---|
821 | } else if( field.setSelectionRange ){ |
---|
822 | field.setSelectionRange(start, end); |
---|
823 | } else { |
---|
824 | if( field.selectionStart ){ |
---|
825 | field.selectionStart = start; |
---|
826 | field.selectionEnd = end; |
---|
827 | } |
---|
828 | } |
---|
829 | field.focus(); |
---|
830 | }; |
---|
831 | |
---|
832 | })(jQuery); |
---|