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comparison src/main/webapp/imageServer/resources/js/jquery-ui-1.10.4/ui/jquery.ui.autocomplete.js @ 7:764f47286679

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author jurzua
date Wed, 29 Oct 2014 14:28:34 +0000
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6:ded3bccf2cf9 7:764f47286679
1 /*!
2 * jQuery UI Autocomplete 1.10.4
3 * http://jqueryui.com
4 *
5 * Copyright 2014 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 $.widget( "ui.autocomplete", {
20 version: "1.10.4",
21 defaultElement: "<input>",
22 options: {
23 appendTo: null,
24 autoFocus: false,
25 delay: 300,
26 minLength: 1,
27 position: {
28 my: "left top",
29 at: "left bottom",
30 collision: "none"
31 },
32 source: null,
33
34 // callbacks
35 change: null,
36 close: null,
37 focus: null,
38 open: null,
39 response: null,
40 search: null,
41 select: null
42 },
43
44 requestIndex: 0,
45 pending: 0,
46
47 _create: function() {
48 // Some browsers only repeat keydown events, not keypress events,
49 // so we use the suppressKeyPress flag to determine if we've already
50 // handled the keydown event. #7269
51 // Unfortunately the code for & in keypress is the same as the up arrow,
52 // so we use the suppressKeyPressRepeat flag to avoid handling keypress
53 // events when we know the keydown event was used to modify the
54 // search term. #7799
55 var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
56 nodeName = this.element[0].nodeName.toLowerCase(),
57 isTextarea = nodeName === "textarea",
58 isInput = nodeName === "input";
59
60 this.isMultiLine =
61 // Textareas are always multi-line
62 isTextarea ? true :
63 // Inputs are always single-line, even if inside a contentEditable element
64 // IE also treats inputs as contentEditable
65 isInput ? false :
66 // All other element types are determined by whether or not they're contentEditable
67 this.element.prop( "isContentEditable" );
68
69 this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
70 this.isNewMenu = true;
71
72 this.element
73 .addClass( "ui-autocomplete-input" )
74 .attr( "autocomplete", "off" );
75
76 this._on( this.element, {
77 keydown: function( event ) {
78 if ( this.element.prop( "readOnly" ) ) {
79 suppressKeyPress = true;
80 suppressInput = true;
81 suppressKeyPressRepeat = true;
82 return;
83 }
84
85 suppressKeyPress = false;
86 suppressInput = false;
87 suppressKeyPressRepeat = false;
88 var keyCode = $.ui.keyCode;
89 switch( event.keyCode ) {
90 case keyCode.PAGE_UP:
91 suppressKeyPress = true;
92 this._move( "previousPage", event );
93 break;
94 case keyCode.PAGE_DOWN:
95 suppressKeyPress = true;
96 this._move( "nextPage", event );
97 break;
98 case keyCode.UP:
99 suppressKeyPress = true;
100 this._keyEvent( "previous", event );
101 break;
102 case keyCode.DOWN:
103 suppressKeyPress = true;
104 this._keyEvent( "next", event );
105 break;
106 case keyCode.ENTER:
107 case keyCode.NUMPAD_ENTER:
108 // when menu is open and has focus
109 if ( this.menu.active ) {
110 // #6055 - Opera still allows the keypress to occur
111 // which causes forms to submit
112 suppressKeyPress = true;
113 event.preventDefault();
114 this.menu.select( event );
115 }
116 break;
117 case keyCode.TAB:
118 if ( this.menu.active ) {
119 this.menu.select( event );
120 }
121 break;
122 case keyCode.ESCAPE:
123 if ( this.menu.element.is( ":visible" ) ) {
124 this._value( this.term );
125 this.close( event );
126 // Different browsers have different default behavior for escape
127 // Single press can mean undo or clear
128 // Double press in IE means clear the whole form
129 event.preventDefault();
130 }
131 break;
132 default:
133 suppressKeyPressRepeat = true;
134 // search timeout should be triggered before the input value is changed
135 this._searchTimeout( event );
136 break;
137 }
138 },
139 keypress: function( event ) {
140 if ( suppressKeyPress ) {
141 suppressKeyPress = false;
142 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
143 event.preventDefault();
144 }
145 return;
146 }
147 if ( suppressKeyPressRepeat ) {
148 return;
149 }
150
151 // replicate some key handlers to allow them to repeat in Firefox and Opera
152 var keyCode = $.ui.keyCode;
153 switch( event.keyCode ) {
154 case keyCode.PAGE_UP:
155 this._move( "previousPage", event );
156 break;
157 case keyCode.PAGE_DOWN:
158 this._move( "nextPage", event );
159 break;
160 case keyCode.UP:
161 this._keyEvent( "previous", event );
162 break;
163 case keyCode.DOWN:
164 this._keyEvent( "next", event );
165 break;
166 }
167 },
168 input: function( event ) {
169 if ( suppressInput ) {
170 suppressInput = false;
171 event.preventDefault();
172 return;
173 }
174 this._searchTimeout( event );
175 },
176 focus: function() {
177 this.selectedItem = null;
178 this.previous = this._value();
179 },
180 blur: function( event ) {
181 if ( this.cancelBlur ) {
182 delete this.cancelBlur;
183 return;
184 }
185
186 clearTimeout( this.searching );
187 this.close( event );
188 this._change( event );
189 }
190 });
191
192 this._initSource();
193 this.menu = $( "<ul>" )
194 .addClass( "ui-autocomplete ui-front" )
195 .appendTo( this._appendTo() )
196 .menu({
197 // disable ARIA support, the live region takes care of that
198 role: null
199 })
200 .hide()
201 .data( "ui-menu" );
202
203 this._on( this.menu.element, {
204 mousedown: function( event ) {
205 // prevent moving focus out of the text field
206 event.preventDefault();
207
208 // IE doesn't prevent moving focus even with event.preventDefault()
209 // so we set a flag to know when we should ignore the blur event
210 this.cancelBlur = true;
211 this._delay(function() {
212 delete this.cancelBlur;
213 });
214
215 // clicking on the scrollbar causes focus to shift to the body
216 // but we can't detect a mouseup or a click immediately afterward
217 // so we have to track the next mousedown and close the menu if
218 // the user clicks somewhere outside of the autocomplete
219 var menuElement = this.menu.element[ 0 ];
220 if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
221 this._delay(function() {
222 var that = this;
223 this.document.one( "mousedown", function( event ) {
224 if ( event.target !== that.element[ 0 ] &&
225 event.target !== menuElement &&
226 !$.contains( menuElement, event.target ) ) {
227 that.close();
228 }
229 });
230 });
231 }
232 },
233 menufocus: function( event, ui ) {
234 // support: Firefox
235 // Prevent accidental activation of menu items in Firefox (#7024 #9118)
236 if ( this.isNewMenu ) {
237 this.isNewMenu = false;
238 if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) {
239 this.menu.blur();
240
241 this.document.one( "mousemove", function() {
242 $( event.target ).trigger( event.originalEvent );
243 });
244
245 return;
246 }
247 }
248
249 var item = ui.item.data( "ui-autocomplete-item" );
250 if ( false !== this._trigger( "focus", event, { item: item } ) ) {
251 // use value to match what will end up in the input, if it was a key event
252 if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) {
253 this._value( item.value );
254 }
255 } else {
256 // Normally the input is populated with the item's value as the
257 // menu is navigated, causing screen readers to notice a change and
258 // announce the item. Since the focus event was canceled, this doesn't
259 // happen, so we update the live region so that screen readers can
260 // still notice the change and announce it.
261 this.liveRegion.text( item.value );
262 }
263 },
264 menuselect: function( event, ui ) {
265 var item = ui.item.data( "ui-autocomplete-item" ),
266 previous = this.previous;
267
268 // only trigger when focus was lost (click on menu)
269 if ( this.element[0] !== this.document[0].activeElement ) {
270 this.element.focus();
271 this.previous = previous;
272 // #6109 - IE triggers two focus events and the second
273 // is asynchronous, so we need to reset the previous
274 // term synchronously and asynchronously :-(
275 this._delay(function() {
276 this.previous = previous;
277 this.selectedItem = item;
278 });
279 }
280
281 if ( false !== this._trigger( "select", event, { item: item } ) ) {
282 this._value( item.value );
283 }
284 // reset the term after the select event
285 // this allows custom select handling to work properly
286 this.term = this._value();
287
288 this.close( event );
289 this.selectedItem = item;
290 }
291 });
292
293 this.liveRegion = $( "<span>", {
294 role: "status",
295 "aria-live": "polite"
296 })
297 .addClass( "ui-helper-hidden-accessible" )
298 .insertBefore( this.element );
299
300 // turning off autocomplete prevents the browser from remembering the
301 // value when navigating through history, so we re-enable autocomplete
302 // if the page is unloaded before the widget is destroyed. #7790
303 this._on( this.window, {
304 beforeunload: function() {
305 this.element.removeAttr( "autocomplete" );
306 }
307 });
308 },
309
310 _destroy: function() {
311 clearTimeout( this.searching );
312 this.element
313 .removeClass( "ui-autocomplete-input" )
314 .removeAttr( "autocomplete" );
315 this.menu.element.remove();
316 this.liveRegion.remove();
317 },
318
319 _setOption: function( key, value ) {
320 this._super( key, value );
321 if ( key === "source" ) {
322 this._initSource();
323 }
324 if ( key === "appendTo" ) {
325 this.menu.element.appendTo( this._appendTo() );
326 }
327 if ( key === "disabled" && value && this.xhr ) {
328 this.xhr.abort();
329 }
330 },
331
332 _appendTo: function() {
333 var element = this.options.appendTo;
334
335 if ( element ) {
336 element = element.jquery || element.nodeType ?
337 $( element ) :
338 this.document.find( element ).eq( 0 );
339 }
340
341 if ( !element ) {
342 element = this.element.closest( ".ui-front" );
343 }
344
345 if ( !element.length ) {
346 element = this.document[0].body;
347 }
348
349 return element;
350 },
351
352 _initSource: function() {
353 var array, url,
354 that = this;
355 if ( $.isArray(this.options.source) ) {
356 array = this.options.source;
357 this.source = function( request, response ) {
358 response( $.ui.autocomplete.filter( array, request.term ) );
359 };
360 } else if ( typeof this.options.source === "string" ) {
361 url = this.options.source;
362 this.source = function( request, response ) {
363 if ( that.xhr ) {
364 that.xhr.abort();
365 }
366 that.xhr = $.ajax({
367 url: url,
368 data: request,
369 dataType: "json",
370 success: function( data ) {
371 response( data );
372 },
373 error: function() {
374 response( [] );
375 }
376 });
377 };
378 } else {
379 this.source = this.options.source;
380 }
381 },
382
383 _searchTimeout: function( event ) {
384 clearTimeout( this.searching );
385 this.searching = this._delay(function() {
386 // only search if the value has changed
387 if ( this.term !== this._value() ) {
388 this.selectedItem = null;
389 this.search( null, event );
390 }
391 }, this.options.delay );
392 },
393
394 search: function( value, event ) {
395 value = value != null ? value : this._value();
396
397 // always save the actual value, not the one passed as an argument
398 this.term = this._value();
399
400 if ( value.length < this.options.minLength ) {
401 return this.close( event );
402 }
403
404 if ( this._trigger( "search", event ) === false ) {
405 return;
406 }
407
408 return this._search( value );
409 },
410
411 _search: function( value ) {
412 this.pending++;
413 this.element.addClass( "ui-autocomplete-loading" );
414 this.cancelSearch = false;
415
416 this.source( { term: value }, this._response() );
417 },
418
419 _response: function() {
420 var index = ++this.requestIndex;
421
422 return $.proxy(function( content ) {
423 if ( index === this.requestIndex ) {
424 this.__response( content );
425 }
426
427 this.pending--;
428 if ( !this.pending ) {
429 this.element.removeClass( "ui-autocomplete-loading" );
430 }
431 }, this );
432 },
433
434 __response: function( content ) {
435 if ( content ) {
436 content = this._normalize( content );
437 }
438 this._trigger( "response", null, { content: content } );
439 if ( !this.options.disabled && content && content.length && !this.cancelSearch ) {
440 this._suggest( content );
441 this._trigger( "open" );
442 } else {
443 // use ._close() instead of .close() so we don't cancel future searches
444 this._close();
445 }
446 },
447
448 close: function( event ) {
449 this.cancelSearch = true;
450 this._close( event );
451 },
452
453 _close: function( event ) {
454 if ( this.menu.element.is( ":visible" ) ) {
455 this.menu.element.hide();
456 this.menu.blur();
457 this.isNewMenu = true;
458 this._trigger( "close", event );
459 }
460 },
461
462 _change: function( event ) {
463 if ( this.previous !== this._value() ) {
464 this._trigger( "change", event, { item: this.selectedItem } );
465 }
466 },
467
468 _normalize: function( items ) {
469 // assume all items have the right format when the first item is complete
470 if ( items.length && items[0].label && items[0].value ) {
471 return items;
472 }
473 return $.map( items, function( item ) {
474 if ( typeof item === "string" ) {
475 return {
476 label: item,
477 value: item
478 };
479 }
480 return $.extend({
481 label: item.label || item.value,
482 value: item.value || item.label
483 }, item );
484 });
485 },
486
487 _suggest: function( items ) {
488 var ul = this.menu.element.empty();
489 this._renderMenu( ul, items );
490 this.isNewMenu = true;
491 this.menu.refresh();
492
493 // size and position menu
494 ul.show();
495 this._resizeMenu();
496 ul.position( $.extend({
497 of: this.element
498 }, this.options.position ));
499
500 if ( this.options.autoFocus ) {
501 this.menu.next();
502 }
503 },
504
505 _resizeMenu: function() {
506 var ul = this.menu.element;
507 ul.outerWidth( Math.max(
508 // Firefox wraps long text (possibly a rounding bug)
509 // so we add 1px to avoid the wrapping (#7513)
510 ul.width( "" ).outerWidth() + 1,
511 this.element.outerWidth()
512 ) );
513 },
514
515 _renderMenu: function( ul, items ) {
516 var that = this;
517 $.each( items, function( index, item ) {
518 that._renderItemData( ul, item );
519 });
520 },
521
522 _renderItemData: function( ul, item ) {
523 return this._renderItem( ul, item ).data( "ui-autocomplete-item", item );
524 },
525
526 _renderItem: function( ul, item ) {
527 return $( "<li>" )
528 .append( $( "<a>" ).text( item.label ) )
529 .appendTo( ul );
530 },
531
532 _move: function( direction, event ) {
533 if ( !this.menu.element.is( ":visible" ) ) {
534 this.search( null, event );
535 return;
536 }
537 if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
538 this.menu.isLastItem() && /^next/.test( direction ) ) {
539 this._value( this.term );
540 this.menu.blur();
541 return;
542 }
543 this.menu[ direction ]( event );
544 },
545
546 widget: function() {
547 return this.menu.element;
548 },
549
550 _value: function() {
551 return this.valueMethod.apply( this.element, arguments );
552 },
553
554 _keyEvent: function( keyEvent, event ) {
555 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
556 this._move( keyEvent, event );
557
558 // prevents moving cursor to beginning/end of the text field in some browsers
559 event.preventDefault();
560 }
561 }
562 });
563
564 $.extend( $.ui.autocomplete, {
565 escapeRegex: function( value ) {
566 return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
567 },
568 filter: function(array, term) {
569 var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
570 return $.grep( array, function(value) {
571 return matcher.test( value.label || value.value || value );
572 });
573 }
574 });
575
576
577 // live region extension, adding a `messages` option
578 // NOTE: This is an experimental API. We are still investigating
579 // a full solution for string manipulation and internationalization.
580 $.widget( "ui.autocomplete", $.ui.autocomplete, {
581 options: {
582 messages: {
583 noResults: "No search results.",
584 results: function( amount ) {
585 return amount + ( amount > 1 ? " results are" : " result is" ) +
586 " available, use up and down arrow keys to navigate.";
587 }
588 }
589 },
590
591 __response: function( content ) {
592 var message;
593 this._superApply( arguments );
594 if ( this.options.disabled || this.cancelSearch ) {
595 return;
596 }
597 if ( content && content.length ) {
598 message = this.options.messages.results( content.length );
599 } else {
600 message = this.options.messages.noResults;
601 }
602 this.liveRegion.text( message );
603 }
604 });
605
606 }( jQuery ));