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

   1 /*
   2  * jQuery UI Autocomplete 1.8.11
   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.attr( "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         },
 219
 220         destroy: function() {
 221                 this.element
 222                         .removeClass( "ui-autocomplete-input" )
 223                         .removeAttr( "autocomplete" )
 224                         .removeAttr( "role" )
 225                         .removeAttr( "aria-autocomplete" )
 226                         .removeAttr( "aria-haspopup" );
 227                 this.menu.element.remove();
 228                 $.Widget.prototype.destroy.call( this );
 229         },
 230
 231         _setOption: function( key, value ) {
 232                 $.Widget.prototype._setOption.apply( this, arguments );
 233                 if ( key === "source" ) {
 234                         this._initSource();
 235                 }
 236                 if ( key === "appendTo" ) {
 237                         this.menu.element.appendTo( $( value || "body", this.element[0].ownerDocument )[0] )
 238                 }
 239                 if ( key === "disabled" && value && this.xhr ) {
 240                         this.xhr.abort();
 241                 }
 242         },
 243
 244         _initSource: function() {
 245                 var self = this,
 246                         array,
 247                         url;
 248                 if ( $.isArray(this.options.source) ) {
 249                         array = this.options.source;
 250                         this.source = function( request, response ) {
 251                                 response( $.ui.autocomplete.filter(array, request.term) );
 252                         };
 253                 } else if ( typeof this.options.source === "string" ) {
 254                         url = this.options.source;
 255                         this.source = function( request, response ) {
 256                                 if ( self.xhr ) {
 257                                         self.xhr.abort();
 258                                 }
 259                                 self.xhr = $.ajax({
 260                                         url: url,
 261                                         data: request,
 262                                         dataType: "json",
 263                                         autocompleteRequest: ++requestIndex,
 264                                         success: function( data, status ) {
 265                                                 if ( this.autocompleteRequest === requestIndex ) {
 266                                                         response( data );
 267                                                 }
 268                                         },
 269                                         error: function() {
 270                                                 if ( this.autocompleteRequest === requestIndex ) {
 271                                                         response( [] );
 272                                                 }
 273                                         }
 274                                 });
 275                         };
 276                 } else {
 277                         this.source = this.options.source;
 278                 }
 279         },
 280
 281         search: function( value, event ) {
 282                 value = value != null ? value : this.element.val();
 283
 284                 // always save the actual value, not the one passed as an argument
 285                 this.term = this.element.val();
 286
 287                 if ( value.length < this.options.minLength ) {
 288                         return this.close( event );
 289                 }
 290
 291                 clearTimeout( this.closing );
 292                 if ( this._trigger( "search", event ) === false ) {
 293                         return;
 294                 }
 295
 296                 return this._search( value );
 297         },
 298
 299         _search: function( value ) {
 300                 this.pending++;
 301                 this.element.addClass( "ui-autocomplete-loading" );
 302
 303                 this.source( { term: value }, this.response );
 304         },
 305
 306         _response: function( content ) {
 307                 if ( !this.options.disabled && content && content.length ) {
 308                         content = this._normalize( content );
 309                         this._suggest( content );
 310                         this._trigger( "open" );
 311                 } else {
 312                         this.close();
 313                 }
 314                 this.pending--;
 315                 if ( !this.pending ) {
 316                         this.element.removeClass( "ui-autocomplete-loading" );
 317                 }
 318         },
 319
 320         close: function( event ) {
 321                 clearTimeout( this.closing );
 322                 if ( this.menu.element.is(":visible") ) {
 323                         this.menu.element.hide();
 324                         this.menu.deactivate();
 325                         this._trigger( "close", event );
 326                 }
 327         },
 328
 329         _change: function( event ) {
 330                 if ( this.previous !== this.element.val() ) {
 331                         this._trigger( "change", event, { item: this.selectedItem } );
 332                 }
 333         },
 334
 335         _normalize: function( items ) {
 336                 // assume all items have the right format when the first item is complete
 337                 if ( items.length && items[0].label && items[0].value ) {
 338                         return items;
 339                 }
 340                 return $.map( items, function(item) {
 341                         if ( typeof item === "string" ) {
 342                                 return {
 343                                         label: item,
 344                                         value: item
 345                                 };
 346                         }
 347                         return $.extend({
 348                                 label: item.label || item.value,
 349                                 value: item.value || item.label
 350                         }, item );
 351                 });
 352         },
 353
 354         _suggest: function( items ) {
 355                 var ul = this.menu.element
 356                         .empty()
 357                         .zIndex( this.element.zIndex() + 1 );
 358                 this._renderMenu( ul, items );
 359                 // TODO refresh should check if the active item is still in the dom, removing the need for a manual deactivate
 360                 this.menu.deactivate();
 361                 this.menu.refresh();
 362
 363                 // size and position menu
 364                 ul.show();
 365                 this._resizeMenu();
 366                 ul.position( $.extend({
 367                         of: this.element
 368                 }, this.options.position ));
 369
 370                 if ( this.options.autoFocus ) {
 371                         this.menu.next( new $.Event("mouseover") );
 372                 }
 373         },
 374
 375         _resizeMenu: function() {
 376                 var ul = this.menu.element;
 377                 ul.outerWidth( Math.max(
 378                         ul.width( "" ).outerWidth(),
 379                         this.element.outerWidth()
 380                 ) );
 381         },
 382
 383         _renderMenu: function( ul, items ) {
 384                 var self = this;
 385                 $.each( items, function( index, item ) {
 386                         self._renderItem( ul, item );
 387                 });
 388         },
 389
 390         _renderItem: function( ul, item) {
 391                 return $( "<li></li>" )
 392                         .data( "item.autocomplete", item )
 393                         .append( $( "<a></a>" ).text( item.label ) )
 394                         .appendTo( ul );
 395         },
 396
 397         _move: function( direction, event ) {
 398                 if ( !this.menu.element.is(":visible") ) {
 399                         this.search( null, event );
 400                         return;
 401                 }
 402                 if ( this.menu.first() && /^previous/.test(direction) ||
 403                                 this.menu.last() && /^next/.test(direction) ) {
 404                         this.element.val( this.term );
 405                         this.menu.deactivate();
 406                         return;
 407                 }
 408                 this.menu[ direction ]( event );
 409         },
 410
 411         widget: function() {
 412                 return this.menu.element;
 413         }
 414 });
 415
 416 $.extend( $.ui.autocomplete, {
 417         escapeRegex: function( value ) {
 418                 return value.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
 419         },
 420         filter: function(array, term) {
 421                 var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
 422                 return $.grep( array, function(value) {
 423                         return matcher.test( value.label || value.value || value );
 424                 });
 425         }
 426 });
 427
 428 }( jQuery ));
 429
 430 /*
 431  * jQuery UI Menu (not officially released)
 432  *
 433  * This widget isn't yet finished and the API is subject to change. We plan to finish
 434  * it for the next release. You're welcome to give it a try anyway and give us feedback,
 435  * as long as you're okay with migrating your code later on. We can help with that, too.
 436  *
 437  * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
 438  * Dual licensed under the MIT or GPL Version 2 licenses.
 439  * http://jquery.org/license
 440  *
 441  * http://docs.jquery.com/UI/Menu
 442  *
 443  * Depends:
 444  *      jquery.ui.core.js
 445  *  jquery.ui.widget.js
 446  */
 447 (function($) {
 448
 449 $.widget("ui.menu", {
 450         _create: function() {
 451                 var self = this;
 452                 this.element
 453                         .addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
 454                         .attr({
 455                                 role: "listbox",
 456                                 "aria-activedescendant": "ui-active-menuitem"
 457                         })
 458                         .click(function( event ) {
 459                                 if ( !$( event.target ).closest( ".ui-menu-item a" ).length ) {
 460                                         return;
 461                                 }
 462                                 // temporary
 463                                 event.preventDefault();
 464                                 self.select( event );
 465                         });
 466                 this.refresh();
 467         },
 468
 469         refresh: function() {
 470                 var self = this;
 471
 472                 // don't refresh list items that are already adapted
 473                 var items = this.element.children("li:not(.ui-menu-item):has(a)")
 474                         .addClass("ui-menu-item")
 475                         .attr("role", "menuitem");
 476
 477                 items.children("a")
 478                         .addClass("ui-corner-all")
 479                         .attr("tabindex", -1)
 480                         // mouseenter doesn't work with event delegation
 481                         .mouseenter(function( event ) {
 482                                 self.activate( event, $(this).parent() );
 483                         })
 484                         .mouseleave(function() {
 485                                 self.deactivate();
 486                         });
 487         },
 488
 489         activate: function( event, item ) {
 490                 this.deactivate();
 491                 if (this.hasScroll()) {
 492                         var offset = item.offset().top - this.element.offset().top,
 493                                 scroll = this.element.attr("scrollTop"),
 494                                 elementHeight = this.element.height();
 495                         if (offset < 0) {
 496                                 this.element.attr("scrollTop", scroll + offset);
 497                         } else if (offset >= elementHeight) {
 498                                 this.element.attr("scrollTop", scroll + offset - elementHeight + item.height());
 499                         }
 500                 }
 501                 this.active = item.eq(0)
 502                         .children("a")
 503                                 .addClass("ui-state-hover")
 504                                 .attr("id", "ui-active-menuitem")
 505                         .end();
 506                 this._trigger("focus", event, { item: item });
 507         },
 508
 509         deactivate: function() {
 510                 if (!this.active) { return; }
 511
 512                 this.active.children("a")
 513                         .removeClass("ui-state-hover")
 514                         .removeAttr("id");
 515                 this._trigger("blur");
 516                 this.active = null;
 517         },
 518
 519         next: function(event) {
 520                 this.move("next", ".ui-menu-item:first", event);
 521         },
 522
 523         previous: function(event) {
 524                 this.move("prev", ".ui-menu-item:last", event);
 525         },
 526
 527         first: function() {
 528                 return this.active && !this.active.prevAll(".ui-menu-item").length;
 529         },
 530
 531         last: function() {
 532                 return this.active && !this.active.nextAll(".ui-menu-item").length;
 533         },
 534
 535         move: function(direction, edge, event) {
 536                 if (!this.active) {
 537                         this.activate(event, this.element.children(edge));
 538                         return;
 539                 }
 540                 var next = this.active[direction + "All"](".ui-menu-item").eq(0);
 541                 if (next.length) {
 542                         this.activate(event, next);
 543                 } else {
 544                         this.activate(event, this.element.children(edge));
 545                 }
 546         },
 547
 548         // TODO merge with previousPage
 549         nextPage: function(event) {
 550                 if (this.hasScroll()) {
 551                         // TODO merge with no-scroll-else
 552                         if (!this.active || this.last()) {
 553                                 this.activate(event, this.element.children(".ui-menu-item:first"));
 554                                 return;
 555                         }
 556                         var base = this.active.offset().top,
 557                                 height = this.element.height(),
 558                                 result = this.element.children(".ui-menu-item").filter(function() {
 559                                         var close = $(this).offset().top - base - height + $(this).height();
 560                                         // TODO improve approximation
 561                                         return close < 10 && close > -10;
 562                                 });
 563
 564                         // TODO try to catch this earlier when scrollTop indicates the last page anyway
 565                         if (!result.length) {
 566                                 result = this.element.children(".ui-menu-item:last");
 567                         }
 568                         this.activate(event, result);
 569                 } else {
 570                         this.activate(event, this.element.children(".ui-menu-item")
 571                                 .filter(!this.active || this.last() ? ":first" : ":last"));
 572                 }
 573         },
 574
 575         // TODO merge with nextPage
 576         previousPage: function(event) {
 577                 if (this.hasScroll()) {
 578                         // TODO merge with no-scroll-else
 579                         if (!this.active || this.first()) {
 580                                 this.activate(event, this.element.children(".ui-menu-item:last"));
 581                                 return;
 582                         }
 583
 584                         var base = this.active.offset().top,
 585                                 height = this.element.height();
 586                                 result = this.element.children(".ui-menu-item").filter(function() {
 587                                         var close = $(this).offset().top - base + height - $(this).height();
 588                                         // TODO improve approximation
 589                                         return close < 10 && close > -10;
 590                                 });
 591
 592                         // TODO try to catch this earlier when scrollTop indicates the last page anyway
 593                         if (!result.length) {
 594                                 result = this.element.children(".ui-menu-item:first");
 595                         }
 596                         this.activate(event, result);
 597                 } else {
 598                         this.activate(event, this.element.children(".ui-menu-item")
 599                                 .filter(!this.active || this.first() ? ":last" : ":first"));
 600                 }
 601         },
 602
 603         hasScroll: function() {
 604                 return this.element.height() < this.element.attr("scrollHeight");
 605         },
 606
 607         select: function( event ) {
 608                 this._trigger("selected", event, { item: this.active });
 609         }
 610 });
 611
 612 }(jQuery));