resources/jquery.ui/jquery.ui.accordion.js

   1 /*!
   2  * jQuery UI Accordion 1.8.24
   3  *
   4  * Copyright 2012, 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/Accordion
   9  *
  10  * Depends:
  11  *      jquery.ui.core.js
  12  *      jquery.ui.widget.js
  13  */
  14 (function( $, undefined ) {
  15
  16 $.widget( "ui.accordion", {
  17         options: {
  18                 active: 0,
  19                 animated: "slide",
  20                 autoHeight: true,
  21                 clearStyle: false,
  22                 collapsible: false,
  23                 event: "click",
  24                 fillSpace: false,
  25                 header: "> li > :first-child,> :not(li):even",
  26                 icons: {
  27                         header: "ui-icon-triangle-1-e",
  28                         headerSelected: "ui-icon-triangle-1-s"
  29                 },
  30                 navigation: false,
  31                 navigationFilter: function() {
  32                         return this.href.toLowerCase() === location.href.toLowerCase();
  33                 }
  34         },
  35
  36         _create: function() {
  37                 var self = this,
  38                         options = self.options;
  39
  40                 self.running = 0;
  41
  42                 self.element
  43                         .addClass( "ui-accordion ui-widget ui-helper-reset" )
  44                         // in lack of child-selectors in CSS
  45                         // we need to mark top-LIs in a UL-accordion for some IE-fix
  46                         .children( "li" )
  47                                 .addClass( "ui-accordion-li-fix" );
  48
  49                 self.headers = self.element.find( options.header )
  50                         .addClass( "ui-accordion-header ui-helper-reset ui-state-default ui-corner-all" )
  51                         .bind( "mouseenter.accordion", function() {
  52                                 if ( options.disabled ) {
  53                                         return;
  54                                 }
  55                                 $( this ).addClass( "ui-state-hover" );
  56                         })
  57                         .bind( "mouseleave.accordion", function() {
  58                                 if ( options.disabled ) {
  59                                         return;
  60                                 }
  61                                 $( this ).removeClass( "ui-state-hover" );
  62                         })
  63                         .bind( "focus.accordion", function() {
  64                                 if ( options.disabled ) {
  65                                         return;
  66                                 }
  67                                 $( this ).addClass( "ui-state-focus" );
  68                         })
  69                         .bind( "blur.accordion", function() {
  70                                 if ( options.disabled ) {
  71                                         return;
  72                                 }
  73                                 $( this ).removeClass( "ui-state-focus" );
  74                         });
  75
  76                 self.headers.next()
  77                         .addClass( "ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom" );
  78
  79                 if ( options.navigation ) {
  80                         var current = self.element.find( "a" ).filter( options.navigationFilter ).eq( 0 );
  81                         if ( current.length ) {
  82                                 var header = current.closest( ".ui-accordion-header" );
  83                                 if ( header.length ) {
  84                                         // anchor within header
  85                                         self.active = header;
  86                                 } else {
  87                                         // anchor within content
  88                                         self.active = current.closest( ".ui-accordion-content" ).prev();
  89                                 }
  90                         }
  91                 }
  92
  93                 self.active = self._findActive( self.active || options.active )
  94                         .addClass( "ui-state-default ui-state-active" )
  95                         .toggleClass( "ui-corner-all" )
  96                         .toggleClass( "ui-corner-top" );
  97                 self.active.next().addClass( "ui-accordion-content-active" );
  98
  99                 self._createIcons();
 100                 self.resize();
 101
 102                 // ARIA
 103                 self.element.attr( "role", "tablist" );
 104
 105                 self.headers
 106                         .attr( "role", "tab" )
 107                         .bind( "keydown.accordion", function( event ) {
 108                                 return self._keydown( event );
 109                         })
 110                         .next()
 111                                 .attr( "role", "tabpanel" );
 112
 113                 self.headers
 114                         .not( self.active || "" )
 115                         .attr({
 116                                 "aria-expanded": "false",
 117                                 "aria-selected": "false",
 118                                 tabIndex: -1
 119                         })
 120                         .next()
 121                                 .hide();
 122
 123                 // make sure at least one header is in the tab order
 124                 if ( !self.active.length ) {
 125                         self.headers.eq( 0 ).attr( "tabIndex", 0 );
 126                 } else {
 127                         self.active
 128                                 .attr({
 129                                         "aria-expanded": "true",
 130                                         "aria-selected": "true",
 131                                         tabIndex: 0
 132                                 });
 133                 }
 134
 135                 // only need links in tab order for Safari
 136                 if ( !$.browser.safari ) {
 137                         self.headers.find( "a" ).attr( "tabIndex", -1 );
 138                 }
 139
 140                 if ( options.event ) {
 141                         self.headers.bind( options.event.split(" ").join(".accordion ") + ".accordion", function(event) {
 142                                 self._clickHandler.call( self, event, this );
 143                                 event.preventDefault();
 144                         });
 145                 }
 146         },
 147
 148         _createIcons: function() {
 149                 var options = this.options;
 150                 if ( options.icons ) {
 151                         $( "<span></span>" )
 152                                 .addClass( "ui-icon " + options.icons.header )
 153                                 .prependTo( this.headers );
 154                         this.active.children( ".ui-icon" )
 155                                 .toggleClass(options.icons.header)
 156                                 .toggleClass(options.icons.headerSelected);
 157                         this.element.addClass( "ui-accordion-icons" );
 158                 }
 159         },
 160
 161         _destroyIcons: function() {
 162                 this.headers.children( ".ui-icon" ).remove();
 163                 this.element.removeClass( "ui-accordion-icons" );
 164         },
 165
 166         destroy: function() {
 167                 var options = this.options;
 168
 169                 this.element
 170                         .removeClass( "ui-accordion ui-widget ui-helper-reset" )
 171                         .removeAttr( "role" );
 172
 173                 this.headers
 174                         .unbind( ".accordion" )
 175                         .removeClass( "ui-accordion-header ui-accordion-disabled ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-state-disabled ui-corner-top" )
 176                         .removeAttr( "role" )
 177                         .removeAttr( "aria-expanded" )
 178                         .removeAttr( "aria-selected" )
 179                         .removeAttr( "tabIndex" );
 180
 181                 this.headers.find( "a" ).removeAttr( "tabIndex" );
 182                 this._destroyIcons();
 183                 var contents = this.headers.next()
 184                         .css( "display", "" )
 185                         .removeAttr( "role" )
 186                         .removeClass( "ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content ui-accordion-content-active ui-accordion-disabled ui-state-disabled" );
 187                 if ( options.autoHeight || options.fillHeight ) {
 188                         contents.css( "height", "" );
 189                 }
 190
 191                 return $.Widget.prototype.destroy.call( this );
 192         },
 193
 194         _setOption: function( key, value ) {
 195                 $.Widget.prototype._setOption.apply( this, arguments );
 196
 197                 if ( key == "active" ) {
 198                         this.activate( value );
 199                 }
 200                 if ( key == "icons" ) {
 201                         this._destroyIcons();
 202                         if ( value ) {
 203                                 this._createIcons();
 204                         }
 205                 }
 206                 // #5332 - opacity doesn't cascade to positioned elements in IE
 207                 // so we need to add the disabled class to the headers and panels
 208                 if ( key == "disabled" ) {
 209                         this.headers.add(this.headers.next())
 210                                 [ value ? "addClass" : "removeClass" ](
 211                                         "ui-accordion-disabled ui-state-disabled" );
 212                 }
 213         },
 214
 215         _keydown: function( event ) {
 216                 if ( this.options.disabled || event.altKey || event.ctrlKey ) {
 217                         return;
 218                 }
 219
 220                 var keyCode = $.ui.keyCode,
 221                         length = this.headers.length,
 222                         currentIndex = this.headers.index( event.target ),
 223                         toFocus = false;
 224
 225                 switch ( event.keyCode ) {
 226                         case keyCode.RIGHT:
 227                         case keyCode.DOWN:
 228                                 toFocus = this.headers[ ( currentIndex + 1 ) % length ];
 229                                 break;
 230                         case keyCode.LEFT:
 231                         case keyCode.UP:
 232                                 toFocus = this.headers[ ( currentIndex - 1 + length ) % length ];
 233                                 break;
 234                         case keyCode.SPACE:
 235                         case keyCode.ENTER:
 236                                 this._clickHandler( { target: event.target }, event.target );
 237                                 event.preventDefault();
 238                 }
 239
 240                 if ( toFocus ) {
 241                         $( event.target ).attr( "tabIndex", -1 );
 242                         $( toFocus ).attr( "tabIndex", 0 );
 243                         toFocus.focus();
 244                         return false;
 245                 }
 246
 247                 return true;
 248         },
 249
 250         resize: function() {
 251                 var options = this.options,
 252                         maxHeight;
 253
 254                 if ( options.fillSpace ) {
 255                         if ( $.browser.msie ) {
 256                                 var defOverflow = this.element.parent().css( "overflow" );
 257                                 this.element.parent().css( "overflow", "hidden");
 258                         }
 259                         maxHeight = this.element.parent().height();
 260                         if ($.browser.msie) {
 261                                 this.element.parent().css( "overflow", defOverflow );
 262                         }
 263
 264                         this.headers.each(function() {
 265                                 maxHeight -= $( this ).outerHeight( true );
 266                         });
 267
 268                         this.headers.next()
 269                                 .each(function() {
 270                                         $( this ).height( Math.max( 0, maxHeight -
 271                                                 $( this ).innerHeight() + $( this ).height() ) );
 272                                 })
 273                                 .css( "overflow", "auto" );
 274                 } else if ( options.autoHeight ) {
 275                         maxHeight = 0;
 276                         this.headers.next()
 277                                 .each(function() {
 278                                         maxHeight = Math.max( maxHeight, $( this ).height( "" ).height() );
 279                                 })
 280                                 .height( maxHeight );
 281                 }
 282
 283                 return this;
 284         },
 285
 286         activate: function( index ) {
 287                 // TODO this gets called on init, changing the option without an explicit call for that
 288                 this.options.active = index;
 289                 // call clickHandler with custom event
 290                 var active = this._findActive( index )[ 0 ];
 291                 this._clickHandler( { target: active }, active );
 292
 293                 return this;
 294         },
 295
 296         _findActive: function( selector ) {
 297                 return selector
 298                         ? typeof selector === "number"
 299                                 ? this.headers.filter( ":eq(" + selector + ")" )
 300                                 : this.headers.not( this.headers.not( selector ) )
 301                         : selector === false
 302                                 ? $( [] )
 303                                 : this.headers.filter( ":eq(0)" );
 304         },
 305
 306         // TODO isn't event.target enough? why the separate target argument?
 307         _clickHandler: function( event, target ) {
 308                 var options = this.options;
 309                 if ( options.disabled ) {
 310                         return;
 311                 }
 312
 313                 // called only when using activate(false) to close all parts programmatically
 314                 if ( !event.target ) {
 315                         if ( !options.collapsible ) {
 316                                 return;
 317                         }
 318                         this.active
 319                                 .removeClass( "ui-state-active ui-corner-top" )
 320                                 .addClass( "ui-state-default ui-corner-all" )
 321                                 .children( ".ui-icon" )
 322                                         .removeClass( options.icons.headerSelected )
 323                                         .addClass( options.icons.header );
 324                         this.active.next().addClass( "ui-accordion-content-active" );
 325                         var toHide = this.active.next(),
 326                                 data = {
 327                                         options: options,
 328                                         newHeader: $( [] ),
 329                                         oldHeader: options.active,
 330                                         newContent: $( [] ),
 331                                         oldContent: toHide
 332                                 },
 333                                 toShow = ( this.active = $( [] ) );
 334                         this._toggle( toShow, toHide, data );
 335                         return;
 336                 }
 337
 338                 // get the click target
 339                 var clicked = $( event.currentTarget || target ),
 340                         clickedIsActive = clicked[0] === this.active[0];
 341
 342                 // TODO the option is changed, is that correct?
 343                 // TODO if it is correct, shouldn't that happen after determining that the click is valid?
 344                 options.active = options.collapsible && clickedIsActive ?
 345                         false :
 346                         this.headers.index( clicked );
 347
 348                 // if animations are still active, or the active header is the target, ignore click
 349                 if ( this.running || ( !options.collapsible && clickedIsActive ) ) {
 350                         return;
 351                 }
 352
 353                 // find elements to show and hide
 354                 var active = this.active,
 355                         toShow = clicked.next(),
 356                         toHide = this.active.next(),
 357                         data = {
 358                                 options: options,
 359                                 newHeader: clickedIsActive && options.collapsible ? $([]) : clicked,
 360                                 oldHeader: this.active,
 361                                 newContent: clickedIsActive && options.collapsible ? $([]) : toShow,
 362                                 oldContent: toHide
 363                         },
 364                         down = this.headers.index( this.active[0] ) > this.headers.index( clicked[0] );
 365
 366                 // when the call to ._toggle() comes after the class changes
 367                 // it causes a very odd bug in IE 8 (see #6720)
 368                 this.active = clickedIsActive ? $([]) : clicked;
 369                 this._toggle( toShow, toHide, data, clickedIsActive, down );
 370
 371                 // switch classes
 372                 active
 373                         .removeClass( "ui-state-active ui-corner-top" )
 374                         .addClass( "ui-state-default ui-corner-all" )
 375                         .children( ".ui-icon" )
 376                                 .removeClass( options.icons.headerSelected )
 377                                 .addClass( options.icons.header );
 378                 if ( !clickedIsActive ) {
 379                         clicked
 380                                 .removeClass( "ui-state-default ui-corner-all" )
 381                                 .addClass( "ui-state-active ui-corner-top" )
 382                                 .children( ".ui-icon" )
 383                                         .removeClass( options.icons.header )
 384                                         .addClass( options.icons.headerSelected );
 385                         clicked
 386                                 .next()
 387                                 .addClass( "ui-accordion-content-active" );
 388                 }
 389
 390                 return;
 391         },
 392
 393         _toggle: function( toShow, toHide, data, clickedIsActive, down ) {
 394                 var self = this,
 395                         options = self.options;
 396
 397                 self.toShow = toShow;
 398                 self.toHide = toHide;
 399                 self.data = data;
 400
 401                 var complete = function() {
 402                         if ( !self ) {
 403                                 return;
 404                         }
 405                         return self._completed.apply( self, arguments );
 406                 };
 407
 408                 // trigger changestart event
 409                 self._trigger( "changestart", null, self.data );
 410
 411                 // count elements to animate
 412                 self.running = toHide.size() === 0 ? toShow.size() : toHide.size();
 413
 414                 if ( options.animated ) {
 415                         var animOptions = {};
 416
 417                         if ( options.collapsible && clickedIsActive ) {
 418                                 animOptions = {
 419                                         toShow: $( [] ),
 420                                         toHide: toHide,
 421                                         complete: complete,
 422                                         down: down,
 423                                         autoHeight: options.autoHeight || options.fillSpace
 424                                 };
 425                         } else {
 426                                 animOptions = {
 427                                         toShow: toShow,
 428                                         toHide: toHide,
 429                                         complete: complete,
 430                                         down: down,
 431                                         autoHeight: options.autoHeight || options.fillSpace
 432                                 };
 433                         }
 434
 435                         if ( !options.proxied ) {
 436                                 options.proxied = options.animated;
 437                         }
 438
 439                         if ( !options.proxiedDuration ) {
 440                                 options.proxiedDuration = options.duration;
 441                         }
 442
 443                         options.animated = $.isFunction( options.proxied ) ?
 444                                 options.proxied( animOptions ) :
 445                                 options.proxied;
 446
 447                         options.duration = $.isFunction( options.proxiedDuration ) ?
 448                                 options.proxiedDuration( animOptions ) :
 449                                 options.proxiedDuration;
 450
 451                         var animations = $.ui.accordion.animations,
 452                                 duration = options.duration,
 453                                 easing = options.animated;
 454
 455                         if ( easing && !animations[ easing ] && !$.easing[ easing ] ) {
 456                                 easing = "slide";
 457                         }
 458                         if ( !animations[ easing ] ) {
 459                                 animations[ easing ] = function( options ) {
 460                                         this.slide( options, {
 461                                                 easing: easing,
 462                                                 duration: duration || 700
 463                                         });
 464                                 };
 465                         }
 466
 467                         animations[ easing ]( animOptions );
 468                 } else {
 469                         if ( options.collapsible && clickedIsActive ) {
 470                                 toShow.toggle();
 471                         } else {
 472                                 toHide.hide();
 473                                 toShow.show();
 474                         }
 475
 476                         complete( true );
 477                 }
 478
 479                 // TODO assert that the blur and focus triggers are really necessary, remove otherwise
 480                 toHide.prev()
 481                         .attr({
 482                                 "aria-expanded": "false",
 483                                 "aria-selected": "false",
 484                                 tabIndex: -1
 485                         })
 486                         .blur();
 487                 toShow.prev()
 488                         .attr({
 489                                 "aria-expanded": "true",
 490                                 "aria-selected": "true",
 491                                 tabIndex: 0
 492                         })
 493                         .focus();
 494         },
 495
 496         _completed: function( cancel ) {
 497                 this.running = cancel ? 0 : --this.running;
 498                 if ( this.running ) {
 499                         return;
 500                 }
 501
 502                 if ( this.options.clearStyle ) {
 503                         this.toShow.add( this.toHide ).css({
 504                                 height: "",
 505                                 overflow: ""
 506                         });
 507                 }
 508
 509                 // other classes are removed before the animation; this one needs to stay until completed
 510                 this.toHide.removeClass( "ui-accordion-content-active" );
 511                 // Work around for rendering bug in IE (#5421)
 512                 if ( this.toHide.length ) {
 513                         this.toHide.parent()[0].className = this.toHide.parent()[0].className;
 514                 }
 515
 516                 this._trigger( "change", null, this.data );
 517         }
 518 });
 519
 520 $.extend( $.ui.accordion, {
 521         version: "1.8.24",
 522         animations: {
 523                 slide: function( options, additions ) {
 524                         options = $.extend({
 525                                 easing: "swing",
 526                                 duration: 300
 527                         }, options, additions );
 528                         if ( !options.toHide.size() ) {
 529                                 options.toShow.animate({
 530                                         height: "show",
 531                                         paddingTop: "show",
 532                                         paddingBottom: "show"
 533                                 }, options );
 534                                 return;
 535                         }
 536                         if ( !options.toShow.size() ) {
 537                                 options.toHide.animate({
 538                                         height: "hide",
 539                                         paddingTop: "hide",
 540                                         paddingBottom: "hide"
 541                                 }, options );
 542                                 return;
 543                         }
 544                         var overflow = options.toShow.css( "overflow" ),
 545                                 percentDone = 0,
 546                                 showProps = {},
 547                                 hideProps = {},
 548                                 fxAttrs = [ "height", "paddingTop", "paddingBottom" ],
 549                                 originalWidth;
 550                         // fix width before calculating height of hidden element
 551                         var s = options.toShow;
 552                         originalWidth = s[0].style.width;
 553                         s.width( s.parent().width()
 554                                 - parseFloat( s.css( "paddingLeft" ) )
 555                                 - parseFloat( s.css( "paddingRight" ) )
 556                                 - ( parseFloat( s.css( "borderLeftWidth" ) ) || 0 )
 557                                 - ( parseFloat( s.css( "borderRightWidth" ) ) || 0 ) );
 558
 559                         $.each( fxAttrs, function( i, prop ) {
 560                                 hideProps[ prop ] = "hide";
 561
 562                                 var parts = ( "" + $.css( options.toShow[0], prop ) ).match( /^([\d+-.]+)(.*)$/ );
 563                                 showProps[ prop ] = {
 564                                         value: parts[ 1 ],
 565                                         unit: parts[ 2 ] || "px"
 566                                 };
 567                         });
 568                         options.toShow.css({ height: 0, overflow: "hidden" }).show();
 569                         options.toHide
 570                                 .filter( ":hidden" )
 571                                         .each( options.complete )
 572                                 .end()
 573                                 .filter( ":visible" )
 574                                 .animate( hideProps, {
 575                                 step: function( now, settings ) {
 576                                         // only calculate the percent when animating height
 577                                         // IE gets very inconsistent results when animating elements
 578                                         // with small values, which is common for padding
 579                                         if ( settings.prop == "height" ) {
 580                                                 percentDone = ( settings.end - settings.start === 0 ) ? 0 :
 581                                                         ( settings.now - settings.start ) / ( settings.end - settings.start );
 582                                         }
 583
 584                                         options.toShow[ 0 ].style[ settings.prop ] =
 585                                                 ( percentDone * showProps[ settings.prop ].value )
 586                                                 + showProps[ settings.prop ].unit;
 587                                 },
 588                                 duration: options.duration,
 589                                 easing: options.easing,
 590                                 complete: function() {
 591                                         if ( !options.autoHeight ) {
 592                                                 options.toShow.css( "height", "" );
 593                                         }
 594                                         options.toShow.css({
 595                                                 width: originalWidth,
 596                                                 overflow: overflow
 597                                         });
 598                                         options.complete();
 599                                 }
 600                         });
 601                 },
 602                 bounceslide: function( options ) {
 603                         this.slide( options, {
 604                                 easing: options.down ? "easeOutBounce" : "swing",
 605                                 duration: options.down ? 1000 : 200
 606                         });
 607                 }
 608         }
 609 });
 610
 611 })( jQuery );