source: issm/trunk-jpl/src/mobile/web/js/dev/ui/jquery.ui.autocomplete.js@ 15487

Last change on this file since 15487 was 15487, checked in by ltnguyen, 12 years ago

ADD: Basic backbone for ISSM Web_Development
File size: 15.6 KB
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1/*!
2 * jQuery UI Autocomplete 1.10.3
3 * http://jqueryui.com
4 *
5 * Copyright 2013 jQuery Foundation and other contributors
6 * Released under the MIT license.
7 * http://jquery.org/license
8 *
9 * http://api.jqueryui.com/autocomplete/
10 *
11 * Depends:
12 * jquery.ui.core.js
13 * jquery.ui.widget.js
14 * jquery.ui.position.js
15 * jquery.ui.menu.js
16 */
17(function( $, undefined ) {
18
19// used to prevent race conditions with remote data sources
20var requestIndex = 0;
21
22$.widget( "ui.autocomplete", {
23 version: "1.10.3",
24 defaultElement: "<input>",
25 options: {
26 appendTo: null,
27 autoFocus: false,
28 delay: 300,
29 minLength: 1,
30 position: {
31 my: "left top",
32 at: "left bottom",
33 collision: "none"
34 },
35 source: null,
36
37 // callbacks
38 change: null,
39 close: null,
40 focus: null,
41 open: null,
42 response: null,
43 search: null,
44 select: null
45 },
46
47 pending: 0,
48
49 _create: function() {
50 // Some browsers only repeat keydown events, not keypress events,
51 // so we use the suppressKeyPress flag to determine if we've already
52 // handled the keydown event. #7269
53 // Unfortunately the code for & in keypress is the same as the up arrow,
54 // so we use the suppressKeyPressRepeat flag to avoid handling keypress
55 // events when we know the keydown event was used to modify the
56 // search term. #7799
57 var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
58 nodeName = this.element[0].nodeName.toLowerCase(),
59 isTextarea = nodeName === "textarea",
60 isInput = nodeName === "input";
61
62 this.isMultiLine =
63 // Textareas are always multi-line
64 isTextarea ? true :
65 // Inputs are always single-line, even if inside a contentEditable element
66 // IE also treats inputs as contentEditable
67 isInput ? false :
68 // All other element types are determined by whether or not they're contentEditable
69 this.element.prop( "isContentEditable" );
70
71 this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
72 this.isNewMenu = true;
73
74 this.element
75 .addClass( "ui-autocomplete-input" )
76 .attr( "autocomplete", "off" );
77
78 this._on( this.element, {
79 keydown: function( event ) {
80 /*jshint maxcomplexity:15*/
81 if ( this.element.prop( "readOnly" ) ) {
82 suppressKeyPress = true;
83 suppressInput = true;
84 suppressKeyPressRepeat = true;
85 return;
86 }
87
88 suppressKeyPress = false;
89 suppressInput = false;
90 suppressKeyPressRepeat = false;
91 var keyCode = $.ui.keyCode;
92 switch( event.keyCode ) {
93 case keyCode.PAGE_UP:
94 suppressKeyPress = true;
95 this._move( "previousPage", event );
96 break;
97 case keyCode.PAGE_DOWN:
98 suppressKeyPress = true;
99 this._move( "nextPage", event );
100 break;
101 case keyCode.UP:
102 suppressKeyPress = true;
103 this._keyEvent( "previous", event );
104 break;
105 case keyCode.DOWN:
106 suppressKeyPress = true;
107 this._keyEvent( "next", event );
108 break;
109 case keyCode.ENTER:
110 case keyCode.NUMPAD_ENTER:
111 // when menu is open and has focus
112 if ( this.menu.active ) {
113 // #6055 - Opera still allows the keypress to occur
114 // which causes forms to submit
115 suppressKeyPress = true;
116 event.preventDefault();
117 this.menu.select( event );
118 }
119 break;
120 case keyCode.TAB:
121 if ( this.menu.active ) {
122 this.menu.select( event );
123 }
124 break;
125 case keyCode.ESCAPE:
126 if ( this.menu.element.is( ":visible" ) ) {
127 this._value( this.term );
128 this.close( event );
129 // Different browsers have different default behavior for escape
130 // Single press can mean undo or clear
131 // Double press in IE means clear the whole form
132 event.preventDefault();
133 }
134 break;
135 default:
136 suppressKeyPressRepeat = true;
137 // search timeout should be triggered before the input value is changed
138 this._searchTimeout( event );
139 break;
140 }
141 },
142 keypress: function( event ) {
143 if ( suppressKeyPress ) {
144 suppressKeyPress = false;
145 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
146 event.preventDefault();
147 }
148 return;
149 }
150 if ( suppressKeyPressRepeat ) {
151 return;
152 }
153
154 // replicate some key handlers to allow them to repeat in Firefox and Opera
155 var keyCode = $.ui.keyCode;
156 switch( event.keyCode ) {
157 case keyCode.PAGE_UP:
158 this._move( "previousPage", event );
159 break;
160 case keyCode.PAGE_DOWN:
161 this._move( "nextPage", event );
162 break;
163 case keyCode.UP:
164 this._keyEvent( "previous", event );
165 break;
166 case keyCode.DOWN:
167 this._keyEvent( "next", event );
168 break;
169 }
170 },
171 input: function( event ) {
172 if ( suppressInput ) {
173 suppressInput = false;
174 event.preventDefault();
175 return;
176 }
177 this._searchTimeout( event );
178 },
179 focus: function() {
180 this.selectedItem = null;
181 this.previous = this._value();
182 },
183 blur: function( event ) {
184 if ( this.cancelBlur ) {
185 delete this.cancelBlur;
186 return;
187 }
188
189 clearTimeout( this.searching );
190 this.close( event );
191 this._change( event );
192 }
193 });
194
195 this._initSource();
196 this.menu = $( "<ul>" )
197 .addClass( "ui-autocomplete ui-front" )
198 .appendTo( this._appendTo() )
199 .menu({
200 // disable ARIA support, the live region takes care of that
201 role: null
202 })
203 .hide()
204 .data( "ui-menu" );
205
206 this._on( this.menu.element, {
207 mousedown: function( event ) {
208 // prevent moving focus out of the text field
209 event.preventDefault();
210
211 // IE doesn't prevent moving focus even with event.preventDefault()
212 // so we set a flag to know when we should ignore the blur event
213 this.cancelBlur = true;
214 this._delay(function() {
215 delete this.cancelBlur;
216 });
217
218 // clicking on the scrollbar causes focus to shift to the body
219 // but we can't detect a mouseup or a click immediately afterward
220 // so we have to track the next mousedown and close the menu if
221 // the user clicks somewhere outside of the autocomplete
222 var menuElement = this.menu.element[ 0 ];
223 if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
224 this._delay(function() {
225 var that = this;
226 this.document.one( "mousedown", function( event ) {
227 if ( event.target !== that.element[ 0 ] &&
228 event.target !== menuElement &&
229 !$.contains( menuElement, event.target ) ) {
230 that.close();
231 }
232 });
233 });
234 }
235 },
236 menufocus: function( event, ui ) {
237 // support: Firefox
238 // Prevent accidental activation of menu items in Firefox (#7024 #9118)
239 if ( this.isNewMenu ) {
240 this.isNewMenu = false;
241 if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) {
242 this.menu.blur();
243
244 this.document.one( "mousemove", function() {
245 $( event.target ).trigger( event.originalEvent );
246 });
247
248 return;
249 }
250 }
251
252 var item = ui.item.data( "ui-autocomplete-item" );
253 if ( false !== this._trigger( "focus", event, { item: item } ) ) {
254 // use value to match what will end up in the input, if it was a key event
255 if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) {
256 this._value( item.value );
257 }
258 } else {
259 // Normally the input is populated with the item's value as the
260 // menu is navigated, causing screen readers to notice a change and
261 // announce the item. Since the focus event was canceled, this doesn't
262 // happen, so we update the live region so that screen readers can
263 // still notice the change and announce it.
264 this.liveRegion.text( item.value );
265 }
266 },
267 menuselect: function( event, ui ) {
268 var item = ui.item.data( "ui-autocomplete-item" ),
269 previous = this.previous;
270
271 // only trigger when focus was lost (click on menu)
272 if ( this.element[0] !== this.document[0].activeElement ) {
273 this.element.focus();
274 this.previous = previous;
275 // #6109 - IE triggers two focus events and the second
276 // is asynchronous, so we need to reset the previous
277 // term synchronously and asynchronously :-(
278 this._delay(function() {
279 this.previous = previous;
280 this.selectedItem = item;
281 });
282 }
283
284 if ( false !== this._trigger( "select", event, { item: item } ) ) {
285 this._value( item.value );
286 }
287 // reset the term after the select event
288 // this allows custom select handling to work properly
289 this.term = this._value();
290
291 this.close( event );
292 this.selectedItem = item;
293 }
294 });
295
296 this.liveRegion = $( "<span>", {
297 role: "status",
298 "aria-live": "polite"
299 })
300 .addClass( "ui-helper-hidden-accessible" )
301 .insertBefore( this.element );
302
303 // turning off autocomplete prevents the browser from remembering the
304 // value when navigating through history, so we re-enable autocomplete
305 // if the page is unloaded before the widget is destroyed. #7790
306 this._on( this.window, {
307 beforeunload: function() {
308 this.element.removeAttr( "autocomplete" );
309 }
310 });
311 },
312
313 _destroy: function() {
314 clearTimeout( this.searching );
315 this.element
316 .removeClass( "ui-autocomplete-input" )
317 .removeAttr( "autocomplete" );
318 this.menu.element.remove();
319 this.liveRegion.remove();
320 },
321
322 _setOption: function( key, value ) {
323 this._super( key, value );
324 if ( key === "source" ) {
325 this._initSource();
326 }
327 if ( key === "appendTo" ) {
328 this.menu.element.appendTo( this._appendTo() );
329 }
330 if ( key === "disabled" && value && this.xhr ) {
331 this.xhr.abort();
332 }
333 },
334
335 _appendTo: function() {
336 var element = this.options.appendTo;
337
338 if ( element ) {
339 element = element.jquery || element.nodeType ?
340 $( element ) :
341 this.document.find( element ).eq( 0 );
342 }
343
344 if ( !element ) {
345 element = this.element.closest( ".ui-front" );
346 }
347
348 if ( !element.length ) {
349 element = this.document[0].body;
350 }
351
352 return element;
353 },
354
355 _initSource: function() {
356 var array, url,
357 that = this;
358 if ( $.isArray(this.options.source) ) {
359 array = this.options.source;
360 this.source = function( request, response ) {
361 response( $.ui.autocomplete.filter( array, request.term ) );
362 };
363 } else if ( typeof this.options.source === "string" ) {
364 url = this.options.source;
365 this.source = function( request, response ) {
366 if ( that.xhr ) {
367 that.xhr.abort();
368 }
369 that.xhr = $.ajax({
370 url: url,
371 data: request,
372 dataType: "json",
373 success: function( data ) {
374 response( data );
375 },
376 error: function() {
377 response( [] );
378 }
379 });
380 };
381 } else {
382 this.source = this.options.source;
383 }
384 },
385
386 _searchTimeout: function( event ) {
387 clearTimeout( this.searching );
388 this.searching = this._delay(function() {
389 // only search if the value has changed
390 if ( this.term !== this._value() ) {
391 this.selectedItem = null;
392 this.search( null, event );
393 }
394 }, this.options.delay );
395 },
396
397 search: function( value, event ) {
398 value = value != null ? value : this._value();
399
400 // always save the actual value, not the one passed as an argument
401 this.term = this._value();
402
403 if ( value.length < this.options.minLength ) {
404 return this.close( event );
405 }
406
407 if ( this._trigger( "search", event ) === false ) {
408 return;
409 }
410
411 return this._search( value );
412 },
413
414 _search: function( value ) {
415 this.pending++;
416 this.element.addClass( "ui-autocomplete-loading" );
417 this.cancelSearch = false;
418
419 this.source( { term: value }, this._response() );
420 },
421
422 _response: function() {
423 var that = this,
424 index = ++requestIndex;
425
426 return function( content ) {
427 if ( index === requestIndex ) {
428 that.__response( content );
429 }
430
431 that.pending--;
432 if ( !that.pending ) {
433 that.element.removeClass( "ui-autocomplete-loading" );
434 }
435 };
436 },
437
438 __response: function( content ) {
439 if ( content ) {
440 content = this._normalize( content );
441 }
442 this._trigger( "response", null, { content: content } );
443 if ( !this.options.disabled && content && content.length && !this.cancelSearch ) {
444 this._suggest( content );
445 this._trigger( "open" );
446 } else {
447 // use ._close() instead of .close() so we don't cancel future searches
448 this._close();
449 }
450 },
451
452 close: function( event ) {
453 this.cancelSearch = true;
454 this._close( event );
455 },
456
457 _close: function( event ) {
458 if ( this.menu.element.is( ":visible" ) ) {
459 this.menu.element.hide();
460 this.menu.blur();
461 this.isNewMenu = true;
462 this._trigger( "close", event );
463 }
464 },
465
466 _change: function( event ) {
467 if ( this.previous !== this._value() ) {
468 this._trigger( "change", event, { item: this.selectedItem } );
469 }
470 },
471
472 _normalize: function( items ) {
473 // assume all items have the right format when the first item is complete
474 if ( items.length && items[0].label && items[0].value ) {
475 return items;
476 }
477 return $.map( items, function( item ) {
478 if ( typeof item === "string" ) {
479 return {
480 label: item,
481 value: item
482 };
483 }
484 return $.extend({
485 label: item.label || item.value,
486 value: item.value || item.label
487 }, item );
488 });
489 },
490
491 _suggest: function( items ) {
492 var ul = this.menu.element.empty();
493 this._renderMenu( ul, items );
494 this.isNewMenu = true;
495 this.menu.refresh();
496
497 // size and position menu
498 ul.show();
499 this._resizeMenu();
500 ul.position( $.extend({
501 of: this.element
502 }, this.options.position ));
503
504 if ( this.options.autoFocus ) {
505 this.menu.next();
506 }
507 },
508
509 _resizeMenu: function() {
510 var ul = this.menu.element;
511 ul.outerWidth( Math.max(
512 // Firefox wraps long text (possibly a rounding bug)
513 // so we add 1px to avoid the wrapping (#7513)
514 ul.width( "" ).outerWidth() + 1,
515 this.element.outerWidth()
516 ) );
517 },
518
519 _renderMenu: function( ul, items ) {
520 var that = this;
521 $.each( items, function( index, item ) {
522 that._renderItemData( ul, item );
523 });
524 },
525
526 _renderItemData: function( ul, item ) {
527 return this._renderItem( ul, item ).data( "ui-autocomplete-item", item );
528 },
529
530 _renderItem: function( ul, item ) {
531 return $( "<li>" )
532 .append( $( "<a>" ).text( item.label ) )
533 .appendTo( ul );
534 },
535
536 _move: function( direction, event ) {
537 if ( !this.menu.element.is( ":visible" ) ) {
538 this.search( null, event );
539 return;
540 }
541 if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
542 this.menu.isLastItem() && /^next/.test( direction ) ) {
543 this._value( this.term );
544 this.menu.blur();
545 return;
546 }
547 this.menu[ direction ]( event );
548 },
549
550 widget: function() {
551 return this.menu.element;
552 },
553
554 _value: function() {
555 return this.valueMethod.apply( this.element, arguments );
556 },
557
558 _keyEvent: function( keyEvent, event ) {
559 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
560 this._move( keyEvent, event );
561
562 // prevents moving cursor to beginning/end of the text field in some browsers
563 event.preventDefault();
564 }
565 }
566});
567
568$.extend( $.ui.autocomplete, {
569 escapeRegex: function( value ) {
570 return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
571 },
572 filter: function(array, term) {
573 var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
574 return $.grep( array, function(value) {
575 return matcher.test( value.label || value.value || value );
576 });
577 }
578});
579
580
581// live region extension, adding a `messages` option
582// NOTE: This is an experimental API. We are still investigating
583// a full solution for string manipulation and internationalization.
584$.widget( "ui.autocomplete", $.ui.autocomplete, {
585 options: {
586 messages: {
587 noResults: "No search results.",
588 results: function( amount ) {
589 return amount + ( amount > 1 ? " results are" : " result is" ) +
590 " available, use up and down arrow keys to navigate.";
591 }
592 }
593 },
594
595 __response: function( content ) {
596 var message;
597 this._superApply( arguments );
598 if ( this.options.disabled || this.cancelSearch ) {
599 return;
600 }
601 if ( content && content.length ) {
602 message = this.options.messages.results( content.length );
603 } else {
604 message = this.options.messages.noResults;
605 }
606 this.liveRegion.text( message );
607 }
608});
609
610}( jQuery ));
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