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

   1 /*
   2  * jQuery UI Autocomplete 1.8.17
   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                                         autocompleteRequest: ++requestIndex,
 272                                         success: function( data, status ) {
 273                                                 if ( this.autocompleteRequest === requestIndex ) {
 274                                                         response( data );
 275                                                 }
 276                                         },
 277                                         error: function() {
 278                                                 if ( this.autocompleteRequest === requestIndex ) {
 279                                                         response( [] );
 280                                                 }
 281                                         }
 282                                 });
 283                         };
 284                 } else {
 285                         this.source = this.options.source;
 286                 }
 287         },
 288
 289         search: function( value, event ) {
 290                 value = value != null ? value : this.element.val();
 291
 292                 // always save the actual value, not the one passed as an argument
 293                 this.term = this.element.val();
 294
 295                 if ( value.length < this.options.minLength ) {
 296                         return this.close( event );
 297                 }
 298
 299                 clearTimeout( this.closing );
 300                 if ( this._trigger( "search", event ) === false ) {
 301                         return;
 302                 }
 303
 304                 return this._search( value );
 305         },
 306
 307         _search: function( value ) {
 308                 this.pending++;
 309                 this.element.addClass( "ui-autocomplete-loading" );
 310
 311                 this.source( { term: value }, this.response );
 312         },
 313
 314         _response: function( content ) {
 315                 if ( !this.options.disabled && content && content.length ) {
 316                         content = this._normalize( content );
 317                         this._suggest( content );
 318                         this._trigger( "open" );
 319                 } else {
 320                         this.close();
 321                 }
 322                 this.pending--;
 323                 if ( !this.pending ) {
 324                         this.element.removeClass( "ui-autocomplete-loading" );
 325                 }
 326         },
 327
 328         close: function( event ) {
 329                 clearTimeout( this.closing );
 330                 if ( this.menu.element.is(":visible") ) {
 331                         this.menu.element.hide();
 332                         this.menu.deactivate();
 333                         this._trigger( "close", event );
 334                 }
 335         },
 336
 337         _change: function( event ) {
 338                 if ( this.previous !== this.element.val() ) {
 339                         this._trigger( "change", event, { item: this.selectedItem } );
 340                 }
 341         },
 342
 343         _normalize: function( items ) {
 344                 // assume all items have the right format when the first item is complete
 345                 if ( items.length && items[0].label && items[0].value ) {
 346                         return items;
 347                 }
 348                 return $.map( items, function(item) {
 349                         if ( typeof item === "string" ) {
 350                                 return {
 351                                         label: item,
 352                                         value: item
 353                                 };
 354                         }
 355                         return $.extend({
 356                                 label: item.label || item.value,
 357                                 value: item.value || item.label
 358                         }, item );
 359                 });
 360         },
 361
 362         _suggest: function( items ) {
 363                 var ul = this.menu.element
 364                         .empty()
 365                         .zIndex( this.element.zIndex() + 1 );
 366                 this._renderMenu( ul, items );
 367                 // TODO refresh should check if the active item is still in the dom, removing the need for a manual deactivate
 368                 this.menu.deactivate();
 369                 this.menu.refresh();
 370
 371                 // size and position menu
 372                 ul.show();
 373                 this._resizeMenu();
 374                 ul.position( $.extend({
 375                         of: this.element
 376                 }, this.options.position ));
 377
 378                 if ( this.options.autoFocus ) {
 379                         this.menu.next( new $.Event("mouseover") );
 380                 }
 381         },
 382
 383         _resizeMenu: function() {
 384                 var ul = this.menu.element;
 385                 ul.outerWidth( Math.max(
 386                         // Firefox wraps long text (possibly a rounding bug)
 387                         // so we add 1px to avoid the wrapping (#7513)
 388                         ul.width( "" ).outerWidth() + 1,
 389                         this.element.outerWidth()
 390                 ) );
 391         },
 392
 393         _renderMenu: function( ul, items ) {
 394                 var self = this;
 395                 $.each( items, function( index, item ) {
 396                         self._renderItem( ul, item );
 397                 });
 398         },
 399
 400         _renderItem: function( ul, item) {
 401                 return $( "<li></li>" )
 402                         .data( "item.autocomplete", item )
 403                         .append( $( "<a></a>" ).text( item.label ) )
 404                         .appendTo( ul );
 405         },
 406
 407         _move: function( direction, event ) {
 408                 if ( !this.menu.element.is(":visible") ) {
 409                         this.search( null, event );
 410                         return;
 411                 }
 412                 if ( this.menu.first() && /^previous/.test(direction) ||
 413                                 this.menu.last() && /^next/.test(direction) ) {
 414                         this.element.val( this.term );
 415                         this.menu.deactivate();
 416                         return;
 417                 }
 418                 this.menu[ direction ]( event );
 419         },
 420
 421         widget: function() {
 422                 return this.menu.element;
 423         }
 424 });
 425
 426 $.extend( $.ui.autocomplete, {
 427         escapeRegex: function( value ) {
 428                 return value.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
 429         },
 430         filter: function(array, term) {
 431                 var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
 432                 return $.grep( array, function(value) {
 433                         return matcher.test( value.label || value.value || value );
 434                 });
 435         }
 436 });
 437
 438 }( jQuery ));
 439
 440 /*
 441  * jQuery UI Menu (not officially released)
 442  *
 443  * This widget isn't yet finished and the API is subject to change. We plan to finish
 444  * it for the next release. You're welcome to give it a try anyway and give us feedback,
 445  * as long as you're okay with migrating your code later on. We can help with that, too.
 446  *
 447  * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
 448  * Dual licensed under the MIT or GPL Version 2 licenses.
 449  * http://jquery.org/license
 450  *
 451  * http://docs.jquery.com/UI/Menu
 452  *
 453  * Depends:
 454  *      jquery.ui.core.js
 455  *  jquery.ui.widget.js
 456  */
 457 (function($) {
 458
 459 $.widget("ui.menu", {
 460         _create: function() {
 461                 var self = this;
 462                 this.element
 463                         .addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
 464                         .attr({
 465                                 role: "listbox",
 466                                 "aria-activedescendant": "ui-active-menuitem"
 467                         })
 468                         .click(function( event ) {
 469                                 if ( !$( event.target ).closest( ".ui-menu-item a" ).length ) {
 470                                         return;
 471                                 }
 472                                 // temporary
 473                                 event.preventDefault();
 474                                 self.select( event );
 475                         });
 476                 this.refresh();
 477         },
 478
 479         refresh: function() {
 480                 var self = this;
 481
 482                 // don't refresh list items that are already adapted
 483                 var items = this.element.children("li:not(.ui-menu-item):has(a)")
 484                         .addClass("ui-menu-item")
 485                         .attr("role", "menuitem");
 486
 487                 items.children("a")
 488                         .addClass("ui-corner-all")
 489                         .attr("tabindex", -1)
 490                         // mouseenter doesn't work with event delegation
 491                         .mouseenter(function( event ) {
 492                                 self.activate( event, $(this).parent() );
 493                         })
 494                         .mouseleave(function() {
 495                                 self.deactivate();
 496                         });
 497         },
 498
 499         activate: function( event, item ) {
 500                 this.deactivate();
 501                 if (this.hasScroll()) {
 502                         var offset = item.offset().top - this.element.offset().top,
 503                                 scroll = this.element.scrollTop(),
 504                                 elementHeight = this.element.height();
 505                         if (offset < 0) {
 506                                 this.element.scrollTop( scroll + offset);
 507                         } else if (offset >= elementHeight) {
 508                                 this.element.scrollTop( scroll + offset - elementHeight + item.height());
 509                         }
 510                 }
 511                 this.active = item.eq(0)
 512                         .children("a")
 513                                 .addClass("ui-state-hover")
 514                                 .attr("id", "ui-active-menuitem")
 515                         .end();
 516                 this._trigger("focus", event, { item: item });
 517         },
 518
 519         deactivate: function() {
 520                 if (!this.active) { return; }
 521
 522                 this.active.children("a")
 523                         .removeClass("ui-state-hover")
 524                         .removeAttr("id");
 525                 this._trigger("blur");
 526                 this.active = null;
 527         },
 528
 529         next: function(event) {
 530                 this.move("next", ".ui-menu-item:first", event);
 531         },
 532
 533         previous: function(event) {
 534                 this.move("prev", ".ui-menu-item:last", event);
 535         },
 536
 537         first: function() {
 538                 return this.active && !this.active.prevAll(".ui-menu-item").length;
 539         },
 540
 541         last: function() {
 542                 return this.active && !this.active.nextAll(".ui-menu-item").length;
 543         },
 544
 545         move: function(direction, edge, event) {
 546                 if (!this.active) {
 547                         this.activate(event, this.element.children(edge));
 548                         return;
 549                 }
 550                 var next = this.active[direction + "All"](".ui-menu-item").eq(0);
 551                 if (next.length) {
 552                         this.activate(event, next);
 553                 } else {
 554                         this.activate(event, this.element.children(edge));
 555                 }
 556         },
 557
 558         // TODO merge with previousPage
 559         nextPage: function(event) {
 560                 if (this.hasScroll()) {
 561                         // TODO merge with no-scroll-else
 562                         if (!this.active || this.last()) {
 563                                 this.activate(event, this.element.children(".ui-menu-item:first"));
 564                                 return;
 565                         }
 566                         var base = this.active.offset().top,
 567                                 height = this.element.height(),
 568                                 result = this.element.children(".ui-menu-item").filter(function() {
 569                                         var close = $(this).offset().top - base - height + $(this).height();
 570                                         // TODO improve approximation
 571                                         return close < 10 && close > -10;
 572                                 });
 573
 574                         // TODO try to catch this earlier when scrollTop indicates the last page anyway
 575                         if (!result.length) {
 576                                 result = this.element.children(".ui-menu-item:last");
 577                         }
 578                         this.activate(event, result);
 579                 } else {
 580                         this.activate(event, this.element.children(".ui-menu-item")
 581                                 .filter(!this.active || this.last() ? ":first" : ":last"));
 582                 }
 583         },
 584
 585         // TODO merge with nextPage
 586         previousPage: function(event) {
 587                 if (this.hasScroll()) {
 588                         // TODO merge with no-scroll-else
 589                         if (!this.active || this.first()) {
 590                                 this.activate(event, this.element.children(".ui-menu-item:last"));
 591                                 return;
 592                         }
 593
 594                         var base = this.active.offset().top,
 595                                 height = this.element.height();
 596                                 result = this.element.children(".ui-menu-item").filter(function() {
 597                                         var close = $(this).offset().top - base + height - $(this).height();
 598                                         // TODO improve approximation
 599                                         return close < 10 && close > -10;
 600                                 });
 601
 602                         // TODO try to catch this earlier when scrollTop indicates the last page anyway
 603                         if (!result.length) {
 604                                 result = this.element.children(".ui-menu-item:first");
 605                         }
 606                         this.activate(event, result);
 607                 } else {
 608                         this.activate(event, this.element.children(".ui-menu-item")
 609                                 .filter(!this.active || this.first() ? ":last" : ":first"));
 610                 }
 611         },
 612
 613         hasScroll: function() {
 614                 return this.element.height() < this.element[ $.fn.prop ? "prop" : "attr" ]("scrollHeight");
 615         },
 616
 617         select: function( event ) {
 618                 this._trigger("selected", event, { item: this.active });
 619         }
 620 });
 621
 622 }(jQuery));