resources/jquery.ui/jquery.ui.autocomplete.js

   1 /*
   2  * jQuery UI Autocomplete 1.8.18
   3  *
   4  * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
   5  * Dual licensed under the MIT or GPL Version 2 licenses.
   6  * http://jquery.org/license
   7  *
   8  * http://docs.jquery.com/UI/Autocomplete
   9  *
  10  * Depends:
  11  *      jquery.ui.core.js
  12  *      jquery.ui.widget.js
  13  *      jquery.ui.position.js
  14  */
  15 (function( $, undefined ) {
  16
  17 // used to prevent race conditions with remote data sources
  18 var requestIndex = 0;
  19
  20 $.widget( "ui.autocomplete", {
  21         options: {
  22                 appendTo: "body",
  23                 autoFocus: false,
  24                 delay: 300,
  25                 minLength: 1,
  26                 position: {
  27                         my: "left top",
  28                         at: "left bottom",
  29                         collision: "none"
  30                 },
  31                 source: null
  32         },
  33
  34         pending: 0,
  35
  36         _create: function() {
  37                 var self = this,
  38                         doc = this.element[ 0 ].ownerDocument,
  39                         suppressKeyPress;
  40
  41                 this.element
  42                         .addClass( "ui-autocomplete-input" )
  43                         .attr( "autocomplete", "off" )
  44                         // TODO verify these actually work as intended
  45                         .attr({
  46                                 role: "textbox",
  47                                 "aria-autocomplete": "list",
  48                                 "aria-haspopup": "true"
  49                         })
  50                         .bind( "keydown.autocomplete", function( event ) {
  51                                 if ( self.options.disabled || self.element.propAttr( "readOnly" ) ) {
  52                                         return;
  53                                 }
  54
  55                                 suppressKeyPress = false;
  56                                 var keyCode = $.ui.keyCode;
  57                                 switch( event.keyCode ) {
  58                                 case keyCode.PAGE_UP:
  59                                         self._move( "previousPage", event );
  60                                         break;
  61                                 case keyCode.PAGE_DOWN:
  62                                         self._move( "nextPage", event );
  63                                         break;
  64                                 case keyCode.UP:
  65                                         self._move( "previous", event );
  66                                         // prevent moving cursor to beginning of text field in some browsers
  67                                         event.preventDefault();
  68                                         break;
  69                                 case keyCode.DOWN:
  70                                         self._move( "next", event );
  71                                         // prevent moving cursor to end of text field in some browsers
  72                                         event.preventDefault();
  73                                         break;
  74                                 case keyCode.ENTER:
  75                                 case keyCode.NUMPAD_ENTER:
  76                                         // when menu is open and has focus
  77                                         if ( self.menu.active ) {
  78                                                 // #6055 - Opera still allows the keypress to occur
  79                                                 // which causes forms to submit
  80                                                 suppressKeyPress = true;
  81                                                 event.preventDefault();
  82                                         }
  83                                         //passthrough - ENTER and TAB both select the current element
  84                                 case keyCode.TAB:
  85                                         if ( !self.menu.active ) {
  86                                                 return;
  87                                         }
  88                                         self.menu.select( event );
  89                                         break;
  90                                 case keyCode.ESCAPE:
  91                                         self.element.val( self.term );
  92                                         self.close( event );
  93                                         break;
  94                                 default:
  95                                         // keypress is triggered before the input value is changed
  96                                         clearTimeout( self.searching );
  97                                         self.searching = setTimeout(function() {
  98                                                 // only search if the value has changed
  99                                                 if ( self.term != self.element.val() ) {
 100                                                         self.selectedItem = null;
 101                                                         self.search( null, event );
 102                                                 }
 103                                         }, self.options.delay );
 104                                         break;
 105                                 }
 106                         })
 107                         .bind( "keypress.autocomplete", function( event ) {
 108                                 if ( suppressKeyPress ) {
 109                                         suppressKeyPress = false;
 110                                         event.preventDefault();
 111                                 }
 112                         })
 113                         .bind( "focus.autocomplete", function() {
 114                                 if ( self.options.disabled ) {
 115                                         return;
 116                                 }
 117
 118                                 self.selectedItem = null;
 119                                 self.previous = self.element.val();
 120                         })
 121                         .bind( "blur.autocomplete", function( event ) {
 122                                 if ( self.options.disabled ) {
 123                                         return;
 124                                 }
 125
 126                                 clearTimeout( self.searching );
 127                                 // clicks on the menu (or a button to trigger a search) will cause a blur event
 128                                 self.closing = setTimeout(function() {
 129                                         self.close( event );
 130                                         self._change( event );
 131                                 }, 150 );
 132                         });
 133                 this._initSource();
 134                 this.response = function() {
 135                         return self._response.apply( self, arguments );
 136                 };
 137                 this.menu = $( "<ul></ul>" )
 138                         .addClass( "ui-autocomplete" )
 139                         .appendTo( $( this.options.appendTo || "body", doc )[0] )
 140                         // prevent the close-on-blur in case of a "slow" click on the menu (long mousedown)
 141                         .mousedown(function( event ) {
 142                                 // clicking on the scrollbar causes focus to shift to the body
 143                                 // but we can't detect a mouseup or a click immediately afterward
 144                                 // so we have to track the next mousedown and close the menu if
 145                                 // the user clicks somewhere outside of the autocomplete
 146                                 var menuElement = self.menu.element[ 0 ];
 147                                 if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
 148                                         setTimeout(function() {
 149                                                 $( document ).one( 'mousedown', function( event ) {
 150                                                         if ( event.target !== self.element[ 0 ] &&
 151                                                                 event.target !== menuElement &&
 152                                                                 !$.ui.contains( menuElement, event.target ) ) {
 153                                                                 self.close();
 154                                                         }
 155                                                 });
 156                                         }, 1 );
 157                                 }
 158
 159                                 // use another timeout to make sure the blur-event-handler on the input was already triggered
 160                                 setTimeout(function() {
 161                                         clearTimeout( self.closing );
 162                                 }, 13);
 163                         })
 164                         .menu({
 165                                 focus: function( event, ui ) {
 166                                         var item = ui.item.data( "item.autocomplete" );
 167                                         if ( false !== self._trigger( "focus", event, { item: item } ) ) {
 168                                                 // use value to match what will end up in the input, if it was a key event
 169                                                 if ( /^key/.test(event.originalEvent.type) ) {
 170                                                         self.element.val( item.value );
 171                                                 }
 172                                         }
 173                                 },
 174                                 selected: function( event, ui ) {
 175                                         var item = ui.item.data( "item.autocomplete" ),
 176                                                 previous = self.previous;
 177
 178                                         // only trigger when focus was lost (click on menu)
 179                                         if ( self.element[0] !== doc.activeElement ) {
 180                                                 self.element.focus();
 181                                                 self.previous = previous;
 182                                                 // #6109 - IE triggers two focus events and the second
 183                                                 // is asynchronous, so we need to reset the previous
 184                                                 // term synchronously and asynchronously :-(
 185                                                 setTimeout(function() {
 186                                                         self.previous = previous;
 187                                                         self.selectedItem = item;
 188                                                 }, 1);
 189                                         }
 190
 191                                         if ( false !== self._trigger( "select", event, { item: item } ) ) {
 192                                                 self.element.val( item.value );
 193                                         }
 194                                         // reset the term after the select event
 195                                         // this allows custom select handling to work properly
 196                                         self.term = self.element.val();
 197
 198                                         self.close( event );
 199                                         self.selectedItem = item;
 200                                 },
 201                                 blur: function( event, ui ) {
 202                                         // don't set the value of the text field if it's already correct
 203                                         // this prevents moving the cursor unnecessarily
 204                                         if ( self.menu.element.is(":visible") &&
 205                                                 ( self.element.val() !== self.term ) ) {
 206                                                 self.element.val( self.term );
 207                                         }
 208                                 }
 209                         })
 210                         .zIndex( this.element.zIndex() + 1 )
 211                         // workaround for jQuery bug #5781 http://dev.jquery.com/ticket/5781
 212                         .css({ top: 0, left: 0 })
 213                         .hide()
 214                         .data( "menu" );
 215                 if ( $.fn.bgiframe ) {
 216                          this.menu.element.bgiframe();
 217                 }
 218                 // turning off autocomplete prevents the browser from remembering the
 219                 // value when navigating through history, so we re-enable autocomplete
 220                 // if the page is unloaded before the widget is destroyed. #7790
 221                 self.beforeunloadHandler = function() {
 222                         self.element.removeAttr( "autocomplete" );
 223                 };
 224                 $( window ).bind( "beforeunload", self.beforeunloadHandler );
 225         },
 226
 227         destroy: function() {
 228                 this.element
 229                         .removeClass( "ui-autocomplete-input" )
 230                         .removeAttr( "autocomplete" )
 231                         .removeAttr( "role" )
 232                         .removeAttr( "aria-autocomplete" )
 233                         .removeAttr( "aria-haspopup" );
 234                 this.menu.element.remove();
 235                 $( window ).unbind( "beforeunload", this.beforeunloadHandler );
 236                 $.Widget.prototype.destroy.call( this );
 237         },
 238
 239         _setOption: function( key, value ) {
 240                 $.Widget.prototype._setOption.apply( this, arguments );
 241                 if ( key === "source" ) {
 242                         this._initSource();
 243                 }
 244                 if ( key === "appendTo" ) {
 245                         this.menu.element.appendTo( $( value || "body", this.element[0].ownerDocument )[0] )
 246                 }
 247                 if ( key === "disabled" && value && this.xhr ) {
 248                         this.xhr.abort();
 249                 }
 250         },
 251
 252         _initSource: function() {
 253                 var self = this,
 254                         array,
 255                         url;
 256                 if ( $.isArray(this.options.source) ) {
 257                         array = this.options.source;
 258                         this.source = function( request, response ) {
 259                                 response( $.ui.autocomplete.filter(array, request.term) );
 260                         };
 261                 } else if ( typeof this.options.source === "string" ) {
 262                         url = this.options.source;
 263                         this.source = function( request, response ) {
 264                                 if ( self.xhr ) {
 265                                         self.xhr.abort();
 266                                 }
 267                                 self.xhr = $.ajax({
 268                                         url: url,
 269                                         data: request,
 270                                         dataType: "json",
 271                                         context: {
 272                                                 autocompleteRequest: ++requestIndex
 273                                         },
 274                                         success: function( data, status ) {
 275                                                 if ( this.autocompleteRequest === requestIndex ) {
 276                                                         response( data );
 277                                                 }
 278                                         },
 279                                         error: function() {
 280                                                 if ( this.autocompleteRequest === requestIndex ) {
 281                                                         response( [] );
 282                                                 }
 283                                         }
 284                                 });
 285                         };
 286                 } else {
 287                         this.source = this.options.source;
 288                 }
 289         },
 290
 291         search: function( value, event ) {
 292                 value = value != null ? value : this.element.val();
 293
 294                 // always save the actual value, not the one passed as an argument
 295                 this.term = this.element.val();
 296
 297                 if ( value.length < this.options.minLength ) {
 298                         return this.close( event );
 299                 }
 300
 301                 clearTimeout( this.closing );
 302                 if ( this._trigger( "search", event ) === false ) {
 303                         return;
 304                 }
 305
 306                 return this._search( value );
 307         },
 308
 309         _search: function( value ) {
 310                 this.pending++;
 311                 this.element.addClass( "ui-autocomplete-loading" );
 312
 313                 this.source( { term: value }, this.response );
 314         },
 315
 316         _response: function( content ) {
 317                 if ( !this.options.disabled && content && content.length ) {
 318                         content = this._normalize( content );
 319                         this._suggest( content );
 320                         this._trigger( "open" );
 321                 } else {
 322                         this.close();
 323                 }
 324                 this.pending--;
 325                 if ( !this.pending ) {
 326                         this.element.removeClass( "ui-autocomplete-loading" );
 327                 }
 328         },
 329
 330         close: function( event ) {
 331                 clearTimeout( this.closing );
 332                 if ( this.menu.element.is(":visible") ) {
 333                         this.menu.element.hide();
 334                         this.menu.deactivate();
 335                         this._trigger( "close", event );
 336                 }
 337         },
 338
 339         _change: function( event ) {
 340                 if ( this.previous !== this.element.val() ) {
 341                         this._trigger( "change", event, { item: this.selectedItem } );
 342                 }
 343         },
 344
 345         _normalize: function( items ) {
 346                 // assume all items have the right format when the first item is complete
 347                 if ( items.length && items[0].label && items[0].value ) {
 348                         return items;
 349                 }
 350                 return $.map( items, function(item) {
 351                         if ( typeof item === "string" ) {
 352                                 return {
 353                                         label: item,
 354                                         value: item
 355                                 };
 356                         }
 357                         return $.extend({
 358                                 label: item.label || item.value,
 359                                 value: item.value || item.label
 360                         }, item );
 361                 });
 362         },
 363
 364         _suggest: function( items ) {
 365                 var ul = this.menu.element
 366                         .empty()
 367                         .zIndex( this.element.zIndex() + 1 );
 368                 this._renderMenu( ul, items );
 369                 // TODO refresh should check if the active item is still in the dom, removing the need for a manual deactivate
 370                 this.menu.deactivate();
 371                 this.menu.refresh();
 372
 373                 // size and position menu
 374                 ul.show();
 375                 this._resizeMenu();
 376                 ul.position( $.extend({
 377                         of: this.element
 378                 }, this.options.position ));
 379
 380                 if ( this.options.autoFocus ) {
 381                         this.menu.next( new $.Event("mouseover") );
 382                 }
 383         },
 384
 385         _resizeMenu: function() {
 386                 var ul = this.menu.element;
 387                 ul.outerWidth( Math.max(
 388                         // Firefox wraps long text (possibly a rounding bug)
 389                         // so we add 1px to avoid the wrapping (#7513)
 390                         ul.width( "" ).outerWidth() + 1,
 391                         this.element.outerWidth()
 392                 ) );
 393         },
 394
 395         _renderMenu: function( ul, items ) {
 396                 var self = this;
 397                 $.each( items, function( index, item ) {
 398                         self._renderItem( ul, item );
 399                 });
 400         },
 401
 402         _renderItem: function( ul, item) {
 403                 return $( "<li></li>" )
 404                         .data( "item.autocomplete", item )
 405                         .append( $( "<a></a>" ).text( item.label ) )
 406                         .appendTo( ul );
 407         },
 408
 409         _move: function( direction, event ) {
 410                 if ( !this.menu.element.is(":visible") ) {
 411                         this.search( null, event );
 412                         return;
 413                 }
 414                 if ( this.menu.first() && /^previous/.test(direction) ||
 415                                 this.menu.last() && /^next/.test(direction) ) {
 416                         this.element.val( this.term );
 417                         this.menu.deactivate();
 418                         return;
 419                 }
 420                 this.menu[ direction ]( event );
 421         },
 422
 423         widget: function() {
 424                 return this.menu.element;
 425         }
 426 });
 427
 428 $.extend( $.ui.autocomplete, {
 429         escapeRegex: function( value ) {
 430                 return value.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
 431         },
 432         filter: function(array, term) {
 433                 var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
 434                 return $.grep( array, function(value) {
 435                         return matcher.test( value.label || value.value || value );
 436                 });
 437         }
 438 });
 439
 440 }( jQuery ));
 441
 442 /*
 443  * jQuery UI Menu (not officially released)
 444  *
 445  * This widget isn't yet finished and the API is subject to change. We plan to finish
 446  * it for the next release. You're welcome to give it a try anyway and give us feedback,
 447  * as long as you're okay with migrating your code later on. We can help with that, too.
 448  *
 449  * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
 450  * Dual licensed under the MIT or GPL Version 2 licenses.
 451  * http://jquery.org/license
 452  *
 453  * http://docs.jquery.com/UI/Menu
 454  *
 455  * Depends:
 456  *      jquery.ui.core.js
 457  *  jquery.ui.widget.js
 458  */
 459 (function($) {
 460
 461 $.widget("ui.menu", {
 462         _create: function() {
 463                 var self = this;
 464                 this.element
 465                         .addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
 466                         .attr({
 467                                 role: "listbox",
 468                                 "aria-activedescendant": "ui-active-menuitem"
 469                         })
 470                         .click(function( event ) {
 471                                 if ( !$( event.target ).closest( ".ui-menu-item a" ).length ) {
 472                                         return;
 473                                 }
 474                                 // temporary
 475                                 event.preventDefault();
 476                                 self.select( event );
 477                         });
 478                 this.refresh();
 479         },
 480
 481         refresh: function() {
 482                 var self = this;
 483
 484                 // don't refresh list items that are already adapted
 485                 var items = this.element.children("li:not(.ui-menu-item):has(a)")
 486                         .addClass("ui-menu-item")
 487                         .attr("role", "menuitem");
 488
 489                 items.children("a")
 490                         .addClass("ui-corner-all")
 491                         .attr("tabindex", -1)
 492                         // mouseenter doesn't work with event delegation
 493                         .mouseenter(function( event ) {
 494                                 self.activate( event, $(this).parent() );
 495                         })
 496                         .mouseleave(function() {
 497                                 self.deactivate();
 498                         });
 499         },
 500
 501         activate: function( event, item ) {
 502                 this.deactivate();
 503                 if (this.hasScroll()) {
 504                         var offset = item.offset().top - this.element.offset().top,
 505                                 scroll = this.element.scrollTop(),
 506                                 elementHeight = this.element.height();
 507                         if (offset < 0) {
 508                                 this.element.scrollTop( scroll + offset);
 509                         } else if (offset >= elementHeight) {
 510                                 this.element.scrollTop( scroll + offset - elementHeight + item.height());
 511                         }
 512                 }
 513                 this.active = item.eq(0)
 514                         .children("a")
 515                                 .addClass("ui-state-hover")
 516                                 .attr("id", "ui-active-menuitem")
 517                         .end();
 518                 this._trigger("focus", event, { item: item });
 519         },
 520
 521         deactivate: function() {
 522                 if (!this.active) { return; }
 523
 524                 this.active.children("a")
 525                         .removeClass("ui-state-hover")
 526                         .removeAttr("id");
 527                 this._trigger("blur");
 528                 this.active = null;
 529         },
 530
 531         next: function(event) {
 532                 this.move("next", ".ui-menu-item:first", event);
 533         },
 534
 535         previous: function(event) {
 536                 this.move("prev", ".ui-menu-item:last", event);
 537         },
 538
 539         first: function() {
 540                 return this.active && !this.active.prevAll(".ui-menu-item").length;
 541         },
 542
 543         last: function() {
 544                 return this.active && !this.active.nextAll(".ui-menu-item").length;
 545         },
 546
 547         move: function(direction, edge, event) {
 548                 if (!this.active) {
 549                         this.activate(event, this.element.children(edge));
 550                         return;
 551                 }
 552                 var next = this.active[direction + "All"](".ui-menu-item").eq(0);
 553                 if (next.length) {
 554                         this.activate(event, next);
 555                 } else {
 556                         this.activate(event, this.element.children(edge));
 557                 }
 558         },
 559
 560         // TODO merge with previousPage
 561         nextPage: function(event) {
 562                 if (this.hasScroll()) {
 563                         // TODO merge with no-scroll-else
 564                         if (!this.active || this.last()) {
 565                                 this.activate(event, this.element.children(".ui-menu-item:first"));
 566                                 return;
 567                         }
 568                         var base = this.active.offset().top,
 569                                 height = this.element.height(),
 570                                 result = this.element.children(".ui-menu-item").filter(function() {
 571                                         var close = $(this).offset().top - base - height + $(this).height();
 572                                         // TODO improve approximation
 573                                         return close < 10 && close > -10;
 574                                 });
 575
 576                         // TODO try to catch this earlier when scrollTop indicates the last page anyway
 577                         if (!result.length) {
 578                                 result = this.element.children(".ui-menu-item:last");
 579                         }
 580                         this.activate(event, result);
 581                 } else {
 582                         this.activate(event, this.element.children(".ui-menu-item")
 583                                 .filter(!this.active || this.last() ? ":first" : ":last"));
 584                 }
 585         },
 586
 587         // TODO merge with nextPage
 588         previousPage: function(event) {
 589                 if (this.hasScroll()) {
 590                         // TODO merge with no-scroll-else
 591                         if (!this.active || this.first()) {
 592                                 this.activate(event, this.element.children(".ui-menu-item:last"));
 593                                 return;
 594                         }
 595
 596                         var base = this.active.offset().top,
 597                                 height = this.element.height();
 598                                 result = this.element.children(".ui-menu-item").filter(function() {
 599                                         var close = $(this).offset().top - base + height - $(this).height();
 600                                         // TODO improve approximation
 601                                         return close < 10 && close > -10;
 602                                 });
 603
 604                         // TODO try to catch this earlier when scrollTop indicates the last page anyway
 605                         if (!result.length) {
 606                                 result = this.element.children(".ui-menu-item:first");
 607                         }
 608                         this.activate(event, result);
 609                 } else {
 610                         this.activate(event, this.element.children(".ui-menu-item")
 611                                 .filter(!this.active || this.first() ? ":last" : ":first"));
 612                 }
 613         },
 614
 615         hasScroll: function() {
 616                 return this.element.height() < this.element[ $.fn.prop ? "prop" : "attr" ]("scrollHeight");
 617         },
 618
 619         select: function( event ) {
 620                 this._trigger("selected", event, { item: this.active });
 621         }
 622 });
 623
 624 }(jQuery));