crm.fsf.org/20131203/files/sites/all/modules-old/civicrm/bower_components/jquery-ui/ui/draggable.js

   1 /*!
   2  * jQuery UI Draggable 1.11.4
   3  * http://jqueryui.com
   4  *
   5  * Copyright jQuery Foundation and other contributors
   6  * Released under the MIT license.
   7  * http://jquery.org/license
   8  *
   9  * http://api.jqueryui.com/draggable/
  10  */
  11 (function( factory ) {
  12         if ( typeof define === "function" && define.amd ) {
  13
  14                 // AMD. Register as an anonymous module.
  15                 define([
  16                         "jquery",
  17                         "./core",
  18                         "./mouse",
  19                         "./widget"
  20                 ], factory );
  21         } else {
  22
  23                 // Browser globals
  24                 factory( jQuery );
  25         }
  26 }(function( $ ) {
  27
  28 $.widget("ui.draggable", $.ui.mouse, {
  29         version: "1.11.4",
  30         widgetEventPrefix: "drag",
  31         options: {
  32                 addClasses: true,
  33                 appendTo: "parent",
  34                 axis: false,
  35                 connectToSortable: false,
  36                 containment: false,
  37                 cursor: "auto",
  38                 cursorAt: false,
  39                 grid: false,
  40                 handle: false,
  41                 helper: "original",
  42                 iframeFix: false,
  43                 opacity: false,
  44                 refreshPositions: false,
  45                 revert: false,
  46                 revertDuration: 500,
  47                 scope: "default",
  48                 scroll: true,
  49                 scrollSensitivity: 20,
  50                 scrollSpeed: 20,
  51                 snap: false,
  52                 snapMode: "both",
  53                 snapTolerance: 20,
  54                 stack: false,
  55                 zIndex: false,
  56
  57                 // callbacks
  58                 drag: null,
  59                 start: null,
  60                 stop: null
  61         },
  62         _create: function() {
  63
  64                 if ( this.options.helper === "original" ) {
  65                         this._setPositionRelative();
  66                 }
  67                 if (this.options.addClasses){
  68                         this.element.addClass("ui-draggable");
  69                 }
  70                 if (this.options.disabled){
  71                         this.element.addClass("ui-draggable-disabled");
  72                 }
  73                 this._setHandleClassName();
  74
  75                 this._mouseInit();
  76         },
  77
  78         _setOption: function( key, value ) {
  79                 this._super( key, value );
  80                 if ( key === "handle" ) {
  81                         this._removeHandleClassName();
  82                         this._setHandleClassName();
  83                 }
  84         },
  85
  86         _destroy: function() {
  87                 if ( ( this.helper || this.element ).is( ".ui-draggable-dragging" ) ) {
  88                         this.destroyOnClear = true;
  89                         return;
  90                 }
  91                 this.element.removeClass( "ui-draggable ui-draggable-dragging ui-draggable-disabled" );
  92                 this._removeHandleClassName();
  93                 this._mouseDestroy();
  94         },
  95
  96         _mouseCapture: function(event) {
  97                 var o = this.options;
  98
  99                 this._blurActiveElement( event );
 100
 101                 // among others, prevent a drag on a resizable-handle
 102                 if (this.helper || o.disabled || $(event.target).closest(".ui-resizable-handle").length > 0) {
 103                         return false;
 104                 }
 105
 106                 //Quit if we're not on a valid handle
 107                 this.handle = this._getHandle(event);
 108                 if (!this.handle) {
 109                         return false;
 110                 }
 111
 112                 this._blockFrames( o.iframeFix === true ? "iframe" : o.iframeFix );
 113
 114                 return true;
 115
 116         },
 117
 118         _blockFrames: function( selector ) {
 119                 this.iframeBlocks = this.document.find( selector ).map(function() {
 120                         var iframe = $( this );
 121
 122                         return $( "<div>" )
 123                                 .css( "position", "absolute" )
 124                                 .appendTo( iframe.parent() )
 125                                 .outerWidth( iframe.outerWidth() )
 126                                 .outerHeight( iframe.outerHeight() )
 127                                 .offset( iframe.offset() )[ 0 ];
 128                 });
 129         },
 130
 131         _unblockFrames: function() {
 132                 if ( this.iframeBlocks ) {
 133                         this.iframeBlocks.remove();
 134                         delete this.iframeBlocks;
 135                 }
 136         },
 137
 138         _blurActiveElement: function( event ) {
 139                 var document = this.document[ 0 ];
 140
 141                 // Only need to blur if the event occurred on the draggable itself, see #10527
 142                 if ( !this.handleElement.is( event.target ) ) {
 143                         return;
 144                 }
 145
 146                 // support: IE9
 147                 // IE9 throws an "Unspecified error" accessing document.activeElement from an <iframe>
 148                 try {
 149
 150                         // Support: IE9, IE10
 151                         // If the <body> is blurred, IE will switch windows, see #9520
 152                         if ( document.activeElement && document.activeElement.nodeName.toLowerCase() !== "body" ) {
 153
 154                                 // Blur any element that currently has focus, see #4261
 155                                 $( document.activeElement ).blur();
 156                         }
 157                 } catch ( error ) {}
 158         },
 159
 160         _mouseStart: function(event) {
 161
 162                 var o = this.options;
 163
 164                 //Create and append the visible helper
 165                 this.helper = this._createHelper(event);
 166
 167                 this.helper.addClass("ui-draggable-dragging");
 168
 169                 //Cache the helper size
 170                 this._cacheHelperProportions();
 171
 172                 //If ddmanager is used for droppables, set the global draggable
 173                 if ($.ui.ddmanager) {
 174                         $.ui.ddmanager.current = this;
 175                 }
 176
 177                 /*
 178                  * - Position generation -
 179                  * This block generates everything position related - it's the core of draggables.
 180                  */
 181
 182                 //Cache the margins of the original element
 183                 this._cacheMargins();
 184
 185                 //Store the helper's css position
 186                 this.cssPosition = this.helper.css( "position" );
 187                 this.scrollParent = this.helper.scrollParent( true );
 188                 this.offsetParent = this.helper.offsetParent();
 189                 this.hasFixedAncestor = this.helper.parents().filter(function() {
 190                                 return $( this ).css( "position" ) === "fixed";
 191                         }).length > 0;
 192
 193                 //The element's absolute position on the page minus margins
 194                 this.positionAbs = this.element.offset();
 195                 this._refreshOffsets( event );
 196
 197                 //Generate the original position
 198                 this.originalPosition = this.position = this._generatePosition( event, false );
 199                 this.originalPageX = event.pageX;
 200                 this.originalPageY = event.pageY;
 201
 202                 //Adjust the mouse offset relative to the helper if "cursorAt" is supplied
 203                 (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
 204
 205                 //Set a containment if given in the options
 206                 this._setContainment();
 207
 208                 //Trigger event + callbacks
 209                 if (this._trigger("start", event) === false) {
 210                         this._clear();
 211                         return false;
 212                 }
 213
 214                 //Recache the helper size
 215                 this._cacheHelperProportions();
 216
 217                 //Prepare the droppable offsets
 218                 if ($.ui.ddmanager && !o.dropBehaviour) {
 219                         $.ui.ddmanager.prepareOffsets(this, event);
 220                 }
 221
 222                 // Reset helper's right/bottom css if they're set and set explicit width/height instead
 223                 // as this prevents resizing of elements with right/bottom set (see #7772)
 224                 this._normalizeRightBottom();
 225
 226                 this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
 227
 228                 //If the ddmanager is used for droppables, inform the manager that dragging has started (see #5003)
 229                 if ( $.ui.ddmanager ) {
 230                         $.ui.ddmanager.dragStart(this, event);
 231                 }
 232
 233                 return true;
 234         },
 235
 236         _refreshOffsets: function( event ) {
 237                 this.offset = {
 238                         top: this.positionAbs.top - this.margins.top,
 239                         left: this.positionAbs.left - this.margins.left,
 240                         scroll: false,
 241                         parent: this._getParentOffset(),
 242                         relative: this._getRelativeOffset()
 243                 };
 244
 245                 this.offset.click = {
 246                         left: event.pageX - this.offset.left,
 247                         top: event.pageY - this.offset.top
 248                 };
 249         },
 250
 251         _mouseDrag: function(event, noPropagation) {
 252                 // reset any necessary cached properties (see #5009)
 253                 if ( this.hasFixedAncestor ) {
 254                         this.offset.parent = this._getParentOffset();
 255                 }
 256
 257                 //Compute the helpers position
 258                 this.position = this._generatePosition( event, true );
 259                 this.positionAbs = this._convertPositionTo("absolute");
 260
 261                 //Call plugins and callbacks and use the resulting position if something is returned
 262                 if (!noPropagation) {
 263                         var ui = this._uiHash();
 264                         if (this._trigger("drag", event, ui) === false) {
 265                                 this._mouseUp({});
 266                                 return false;
 267                         }
 268                         this.position = ui.position;
 269                 }
 270
 271                 this.helper[ 0 ].style.left = this.position.left + "px";
 272                 this.helper[ 0 ].style.top = this.position.top + "px";
 273
 274                 if ($.ui.ddmanager) {
 275                         $.ui.ddmanager.drag(this, event);
 276                 }
 277
 278                 return false;
 279         },
 280
 281         _mouseStop: function(event) {
 282
 283                 //If we are using droppables, inform the manager about the drop
 284                 var that = this,
 285                         dropped = false;
 286                 if ($.ui.ddmanager && !this.options.dropBehaviour) {
 287                         dropped = $.ui.ddmanager.drop(this, event);
 288                 }
 289
 290                 //if a drop comes from outside (a sortable)
 291                 if (this.dropped) {
 292                         dropped = this.dropped;
 293                         this.dropped = false;
 294                 }
 295
 296                 if ((this.options.revert === "invalid" && !dropped) || (this.options.revert === "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
 297                         $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
 298                                 if (that._trigger("stop", event) !== false) {
 299                                         that._clear();
 300                                 }
 301                         });
 302                 } else {
 303                         if (this._trigger("stop", event) !== false) {
 304                                 this._clear();
 305                         }
 306                 }
 307
 308                 return false;
 309         },
 310
 311         _mouseUp: function( event ) {
 312                 this._unblockFrames();
 313
 314                 //If the ddmanager is used for droppables, inform the manager that dragging has stopped (see #5003)
 315                 if ( $.ui.ddmanager ) {
 316                         $.ui.ddmanager.dragStop(this, event);
 317                 }
 318
 319                 // Only need to focus if the event occurred on the draggable itself, see #10527
 320                 if ( this.handleElement.is( event.target ) ) {
 321                         // The interaction is over; whether or not the click resulted in a drag, focus the element
 322                         this.element.focus();
 323                 }
 324
 325                 return $.ui.mouse.prototype._mouseUp.call(this, event);
 326         },
 327
 328         cancel: function() {
 329
 330                 if (this.helper.is(".ui-draggable-dragging")) {
 331                         this._mouseUp({});
 332                 } else {
 333                         this._clear();
 334                 }
 335
 336                 return this;
 337
 338         },
 339
 340         _getHandle: function(event) {
 341                 return this.options.handle ?
 342                         !!$( event.target ).closest( this.element.find( this.options.handle ) ).length :
 343                         true;
 344         },
 345
 346         _setHandleClassName: function() {
 347                 this.handleElement = this.options.handle ?
 348                         this.element.find( this.options.handle ) : this.element;
 349                 this.handleElement.addClass( "ui-draggable-handle" );
 350         },
 351
 352         _removeHandleClassName: function() {
 353                 this.handleElement.removeClass( "ui-draggable-handle" );
 354         },
 355
 356         _createHelper: function(event) {
 357
 358                 var o = this.options,
 359                         helperIsFunction = $.isFunction( o.helper ),
 360                         helper = helperIsFunction ?
 361                                 $( o.helper.apply( this.element[ 0 ], [ event ] ) ) :
 362                                 ( o.helper === "clone" ?
 363                                         this.element.clone().removeAttr( "id" ) :
 364                                         this.element );
 365
 366                 if (!helper.parents("body").length) {
 367                         helper.appendTo((o.appendTo === "parent" ? this.element[0].parentNode : o.appendTo));
 368                 }
 369
 370                 // http://bugs.jqueryui.com/ticket/9446
 371                 // a helper function can return the original element
 372                 // which wouldn't have been set to relative in _create
 373                 if ( helperIsFunction && helper[ 0 ] === this.element[ 0 ] ) {
 374                         this._setPositionRelative();
 375                 }
 376
 377                 if (helper[0] !== this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) {
 378                         helper.css("position", "absolute");
 379                 }
 380
 381                 return helper;
 382
 383         },
 384
 385         _setPositionRelative: function() {
 386                 if ( !( /^(?:r|a|f)/ ).test( this.element.css( "position" ) ) ) {
 387                         this.element[ 0 ].style.position = "relative";
 388                 }
 389         },
 390
 391         _adjustOffsetFromHelper: function(obj) {
 392                 if (typeof obj === "string") {
 393                         obj = obj.split(" ");
 394                 }
 395                 if ($.isArray(obj)) {
 396                         obj = { left: +obj[0], top: +obj[1] || 0 };
 397                 }
 398                 if ("left" in obj) {
 399                         this.offset.click.left = obj.left + this.margins.left;
 400                 }
 401                 if ("right" in obj) {
 402                         this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
 403                 }
 404                 if ("top" in obj) {
 405                         this.offset.click.top = obj.top + this.margins.top;
 406                 }
 407                 if ("bottom" in obj) {
 408                         this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
 409                 }
 410         },
 411
 412         _isRootNode: function( element ) {
 413                 return ( /(html|body)/i ).test( element.tagName ) || element === this.document[ 0 ];
 414         },
 415
 416         _getParentOffset: function() {
 417
 418                 //Get the offsetParent and cache its position
 419                 var po = this.offsetParent.offset(),
 420                         document = this.document[ 0 ];
 421
 422                 // This is a special case where we need to modify a offset calculated on start, since the following happened:
 423                 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
 424                 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
 425                 //    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
 426                 if (this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
 427                         po.left += this.scrollParent.scrollLeft();
 428                         po.top += this.scrollParent.scrollTop();
 429                 }
 430
 431                 if ( this._isRootNode( this.offsetParent[ 0 ] ) ) {
 432                         po = { top: 0, left: 0 };
 433                 }
 434
 435                 return {
 436                         top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"), 10) || 0),
 437                         left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"), 10) || 0)
 438                 };
 439
 440         },
 441
 442         _getRelativeOffset: function() {
 443                 if ( this.cssPosition !== "relative" ) {
 444                         return { top: 0, left: 0 };
 445                 }
 446
 447                 var p = this.element.position(),
 448                         scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );
 449
 450                 return {
 451                         top: p.top - ( parseInt(this.helper.css( "top" ), 10) || 0 ) + ( !scrollIsRootNode ? this.scrollParent.scrollTop() : 0 ),
 452                         left: p.left - ( parseInt(this.helper.css( "left" ), 10) || 0 ) + ( !scrollIsRootNode ? this.scrollParent.scrollLeft() : 0 )
 453                 };
 454
 455         },
 456
 457         _cacheMargins: function() {
 458                 this.margins = {
 459                         left: (parseInt(this.element.css("marginLeft"), 10) || 0),
 460                         top: (parseInt(this.element.css("marginTop"), 10) || 0),
 461                         right: (parseInt(this.element.css("marginRight"), 10) || 0),
 462                         bottom: (parseInt(this.element.css("marginBottom"), 10) || 0)
 463                 };
 464         },
 465
 466         _cacheHelperProportions: function() {
 467                 this.helperProportions = {
 468                         width: this.helper.outerWidth(),
 469                         height: this.helper.outerHeight()
 470                 };
 471         },
 472
 473         _setContainment: function() {
 474
 475                 var isUserScrollable, c, ce,
 476                         o = this.options,
 477                         document = this.document[ 0 ];
 478
 479                 this.relativeContainer = null;
 480
 481                 if ( !o.containment ) {
 482                         this.containment = null;
 483                         return;
 484                 }
 485
 486                 if ( o.containment === "window" ) {
 487                         this.containment = [
 488                                 $( window ).scrollLeft() - this.offset.relative.left - this.offset.parent.left,
 489                                 $( window ).scrollTop() - this.offset.relative.top - this.offset.parent.top,
 490                                 $( window ).scrollLeft() + $( window ).width() - this.helperProportions.width - this.margins.left,
 491                                 $( window ).scrollTop() + ( $( window ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
 492                         ];
 493                         return;
 494                 }
 495
 496                 if ( o.containment === "document") {
 497                         this.containment = [
 498                                 0,
 499                                 0,
 500                                 $( document ).width() - this.helperProportions.width - this.margins.left,
 501                                 ( $( document ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
 502                         ];
 503                         return;
 504                 }
 505
 506                 if ( o.containment.constructor === Array ) {
 507                         this.containment = o.containment;
 508                         return;
 509                 }
 510
 511                 if ( o.containment === "parent" ) {
 512                         o.containment = this.helper[ 0 ].parentNode;
 513                 }
 514
 515                 c = $( o.containment );
 516                 ce = c[ 0 ];
 517
 518                 if ( !ce ) {
 519                         return;
 520                 }
 521
 522                 isUserScrollable = /(scroll|auto)/.test( c.css( "overflow" ) );
 523
 524                 this.containment = [
 525                         ( parseInt( c.css( "borderLeftWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingLeft" ), 10 ) || 0 ),
 526                         ( parseInt( c.css( "borderTopWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingTop" ), 10 ) || 0 ),
 527                         ( isUserScrollable ? Math.max( ce.scrollWidth, ce.offsetWidth ) : ce.offsetWidth ) -
 528                                 ( parseInt( c.css( "borderRightWidth" ), 10 ) || 0 ) -
 529                                 ( parseInt( c.css( "paddingRight" ), 10 ) || 0 ) -
 530                                 this.helperProportions.width -
 531                                 this.margins.left -
 532                                 this.margins.right,
 533                         ( isUserScrollable ? Math.max( ce.scrollHeight, ce.offsetHeight ) : ce.offsetHeight ) -
 534                                 ( parseInt( c.css( "borderBottomWidth" ), 10 ) || 0 ) -
 535                                 ( parseInt( c.css( "paddingBottom" ), 10 ) || 0 ) -
 536                                 this.helperProportions.height -
 537                                 this.margins.top -
 538                                 this.margins.bottom
 539                 ];
 540                 this.relativeContainer = c;
 541         },
 542
 543         _convertPositionTo: function(d, pos) {
 544
 545                 if (!pos) {
 546                         pos = this.position;
 547                 }
 548
 549                 var mod = d === "absolute" ? 1 : -1,
 550                         scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );
 551
 552                 return {
 553                         top: (
 554                                 pos.top +                                                                                                                               // The absolute mouse position
 555                                 this.offset.relative.top * mod +                                                                                // Only for relative positioned nodes: Relative offset from element to offset parent
 556                                 this.offset.parent.top * mod -                                                                          // The offsetParent's offset without borders (offset + border)
 557                                 ( ( this.cssPosition === "fixed" ? -this.offset.scroll.top : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) ) * mod)
 558                         ),
 559                         left: (
 560                                 pos.left +                                                                                                                              // The absolute mouse position
 561                                 this.offset.relative.left * mod +                                                                               // Only for relative positioned nodes: Relative offset from element to offset parent
 562                                 this.offset.parent.left * mod   -                                                                               // The offsetParent's offset without borders (offset + border)
 563                                 ( ( this.cssPosition === "fixed" ? -this.offset.scroll.left : ( scrollIsRootNode ? 0 : this.offset.scroll.left ) ) * mod)
 564                         )
 565                 };
 566
 567         },
 568
 569         _generatePosition: function( event, constrainPosition ) {
 570
 571                 var containment, co, top, left,
 572                         o = this.options,
 573                         scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] ),
 574                         pageX = event.pageX,
 575                         pageY = event.pageY;
 576
 577                 // Cache the scroll
 578                 if ( !scrollIsRootNode || !this.offset.scroll ) {
 579                         this.offset.scroll = {
 580                                 top: this.scrollParent.scrollTop(),
 581                                 left: this.scrollParent.scrollLeft()
 582                         };
 583                 }
 584
 585                 /*
 586                  * - Position constraining -
 587                  * Constrain the position to a mix of grid, containment.
 588                  */
 589
 590                 // If we are not dragging yet, we won't check for options
 591                 if ( constrainPosition ) {
 592                         if ( this.containment ) {
 593                                 if ( this.relativeContainer ){
 594                                         co = this.relativeContainer.offset();
 595                                         containment = [
 596                                                 this.containment[ 0 ] + co.left,
 597                                                 this.containment[ 1 ] + co.top,
 598                                                 this.containment[ 2 ] + co.left,
 599                                                 this.containment[ 3 ] + co.top
 600                                         ];
 601                                 } else {
 602                                         containment = this.containment;
 603                                 }
 604
 605                                 if (event.pageX - this.offset.click.left < containment[0]) {
 606                                         pageX = containment[0] + this.offset.click.left;
 607                                 }
 608                                 if (event.pageY - this.offset.click.top < containment[1]) {
 609                                         pageY = containment[1] + this.offset.click.top;
 610                                 }
 611                                 if (event.pageX - this.offset.click.left > containment[2]) {
 612                                         pageX = containment[2] + this.offset.click.left;
 613                                 }
 614                                 if (event.pageY - this.offset.click.top > containment[3]) {
 615                                         pageY = containment[3] + this.offset.click.top;
 616                                 }
 617                         }
 618
 619                         if (o.grid) {
 620                                 //Check for grid elements set to 0 to prevent divide by 0 error causing invalid argument errors in IE (see ticket #6950)
 621                                 top = o.grid[1] ? this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1] : this.originalPageY;
 622                                 pageY = containment ? ((top - this.offset.click.top >= containment[1] || top - this.offset.click.top > containment[3]) ? top : ((top - this.offset.click.top >= containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
 623
 624                                 left = o.grid[0] ? this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0] : this.originalPageX;
 625                                 pageX = containment ? ((left - this.offset.click.left >= containment[0] || left - this.offset.click.left > containment[2]) ? left : ((left - this.offset.click.left >= containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
 626                         }
 627
 628                         if ( o.axis === "y" ) {
 629                                 pageX = this.originalPageX;
 630                         }
 631
 632                         if ( o.axis === "x" ) {
 633                                 pageY = this.originalPageY;
 634                         }
 635                 }
 636
 637                 return {
 638                         top: (
 639                                 pageY -                                                                                                                                 // The absolute mouse position
 640                                 this.offset.click.top   -                                                                                               // Click offset (relative to the element)
 641                                 this.offset.relative.top -                                                                                              // Only for relative positioned nodes: Relative offset from element to offset parent
 642                                 this.offset.parent.top +                                                                                                // The offsetParent's offset without borders (offset + border)
 643                                 ( this.cssPosition === "fixed" ? -this.offset.scroll.top : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) )
 644                         ),
 645                         left: (
 646                                 pageX -                                                                                                                                 // The absolute mouse position
 647                                 this.offset.click.left -                                                                                                // Click offset (relative to the element)
 648                                 this.offset.relative.left -                                                                                             // Only for relative positioned nodes: Relative offset from element to offset parent
 649                                 this.offset.parent.left +                                                                                               // The offsetParent's offset without borders (offset + border)
 650                                 ( this.cssPosition === "fixed" ? -this.offset.scroll.left : ( scrollIsRootNode ? 0 : this.offset.scroll.left ) )
 651                         )
 652                 };
 653
 654         },
 655
 656         _clear: function() {
 657                 this.helper.removeClass("ui-draggable-dragging");
 658                 if (this.helper[0] !== this.element[0] && !this.cancelHelperRemoval) {
 659                         this.helper.remove();
 660                 }
 661                 this.helper = null;
 662                 this.cancelHelperRemoval = false;
 663                 if ( this.destroyOnClear ) {
 664                         this.destroy();
 665                 }
 666         },
 667
 668         _normalizeRightBottom: function() {
 669                 if ( this.options.axis !== "y" && this.helper.css( "right" ) !== "auto" ) {
 670                         this.helper.width( this.helper.width() );
 671                         this.helper.css( "right", "auto" );
 672                 }
 673                 if ( this.options.axis !== "x" && this.helper.css( "bottom" ) !== "auto" ) {
 674                         this.helper.height( this.helper.height() );
 675                         this.helper.css( "bottom", "auto" );
 676                 }
 677         },
 678
 679         // From now on bulk stuff - mainly helpers
 680
 681         _trigger: function( type, event, ui ) {
 682                 ui = ui || this._uiHash();
 683                 $.ui.plugin.call( this, type, [ event, ui, this ], true );
 684
 685                 // Absolute position and offset (see #6884 ) have to be recalculated after plugins
 686                 if ( /^(drag|start|stop)/.test( type ) ) {
 687                         this.positionAbs = this._convertPositionTo( "absolute" );
 688                         ui.offset = this.positionAbs;
 689                 }
 690                 return $.Widget.prototype._trigger.call( this, type, event, ui );
 691         },
 692
 693         plugins: {},
 694
 695         _uiHash: function() {
 696                 return {
 697                         helper: this.helper,
 698                         position: this.position,
 699                         originalPosition: this.originalPosition,
 700                         offset: this.positionAbs
 701                 };
 702         }
 703
 704 });
 705
 706 $.ui.plugin.add( "draggable", "connectToSortable", {
 707         start: function( event, ui, draggable ) {
 708                 var uiSortable = $.extend( {}, ui, {
 709                         item: draggable.element
 710                 });
 711
 712                 draggable.sortables = [];
 713                 $( draggable.options.connectToSortable ).each(function() {
 714                         var sortable = $( this ).sortable( "instance" );
 715
 716                         if ( sortable && !sortable.options.disabled ) {
 717                                 draggable.sortables.push( sortable );
 718
 719                                 // refreshPositions is called at drag start to refresh the containerCache
 720                                 // which is used in drag. This ensures it's initialized and synchronized
 721                                 // with any changes that might have happened on the page since initialization.
 722                                 sortable.refreshPositions();
 723                                 sortable._trigger("activate", event, uiSortable);
 724                         }
 725                 });
 726         },
 727         stop: function( event, ui, draggable ) {
 728                 var uiSortable = $.extend( {}, ui, {
 729                         item: draggable.element
 730                 });
 731
 732                 draggable.cancelHelperRemoval = false;
 733
 734                 $.each( draggable.sortables, function() {
 735                         var sortable = this;
 736
 737                         if ( sortable.isOver ) {
 738                                 sortable.isOver = 0;
 739
 740                                 // Allow this sortable to handle removing the helper
 741                                 draggable.cancelHelperRemoval = true;
 742                                 sortable.cancelHelperRemoval = false;
 743
 744                                 // Use _storedCSS To restore properties in the sortable,
 745                                 // as this also handles revert (#9675) since the draggable
 746                                 // may have modified them in unexpected ways (#8809)
 747                                 sortable._storedCSS = {
 748                                         position: sortable.placeholder.css( "position" ),
 749                                         top: sortable.placeholder.css( "top" ),
 750                                         left: sortable.placeholder.css( "left" )
 751                                 };
 752
 753                                 sortable._mouseStop(event);
 754
 755                                 // Once drag has ended, the sortable should return to using
 756                                 // its original helper, not the shared helper from draggable
 757                                 sortable.options.helper = sortable.options._helper;
 758                         } else {
 759                                 // Prevent this Sortable from removing the helper.
 760                                 // However, don't set the draggable to remove the helper
 761                                 // either as another connected Sortable may yet handle the removal.
 762                                 sortable.cancelHelperRemoval = true;
 763
 764                                 sortable._trigger( "deactivate", event, uiSortable );
 765                         }
 766                 });
 767         },
 768         drag: function( event, ui, draggable ) {
 769                 $.each( draggable.sortables, function() {
 770                         var innermostIntersecting = false,
 771                                 sortable = this;
 772
 773                         // Copy over variables that sortable's _intersectsWith uses
 774                         sortable.positionAbs = draggable.positionAbs;
 775                         sortable.helperProportions = draggable.helperProportions;
 776                         sortable.offset.click = draggable.offset.click;
 777
 778                         if ( sortable._intersectsWith( sortable.containerCache ) ) {
 779                                 innermostIntersecting = true;
 780
 781                                 $.each( draggable.sortables, function() {
 782                                         // Copy over variables that sortable's _intersectsWith uses
 783                                         this.positionAbs = draggable.positionAbs;
 784                                         this.helperProportions = draggable.helperProportions;
 785                                         this.offset.click = draggable.offset.click;
 786
 787                                         if ( this !== sortable &&
 788                                                         this._intersectsWith( this.containerCache ) &&
 789                                                         $.contains( sortable.element[ 0 ], this.element[ 0 ] ) ) {
 790                                                 innermostIntersecting = false;
 791                                         }
 792
 793                                         return innermostIntersecting;
 794                                 });
 795                         }
 796
 797                         if ( innermostIntersecting ) {
 798                                 // If it intersects, we use a little isOver variable and set it once,
 799                                 // so that the move-in stuff gets fired only once.
 800                                 if ( !sortable.isOver ) {
 801                                         sortable.isOver = 1;
 802
 803                                         // Store draggable's parent in case we need to reappend to it later.
 804                                         draggable._parent = ui.helper.parent();
 805
 806                                         sortable.currentItem = ui.helper
 807                                                 .appendTo( sortable.element )
 808                                                 .data( "ui-sortable-item", true );
 809
 810                                         // Store helper option to later restore it
 811                                         sortable.options._helper = sortable.options.helper;
 812
 813                                         sortable.options.helper = function() {
 814                                                 return ui.helper[ 0 ];
 815                                         };
 816
 817                                         // Fire the start events of the sortable with our passed browser event,
 818                                         // and our own helper (so it doesn't create a new one)
 819                                         event.target = sortable.currentItem[ 0 ];
 820                                         sortable._mouseCapture( event, true );
 821                                         sortable._mouseStart( event, true, true );
 822
 823                                         // Because the browser event is way off the new appended portlet,
 824                                         // modify necessary variables to reflect the changes
 825                                         sortable.offset.click.top = draggable.offset.click.top;
 826                                         sortable.offset.click.left = draggable.offset.click.left;
 827                                         sortable.offset.parent.left -= draggable.offset.parent.left -
 828                                                 sortable.offset.parent.left;
 829                                         sortable.offset.parent.top -= draggable.offset.parent.top -
 830                                                 sortable.offset.parent.top;
 831
 832                                         draggable._trigger( "toSortable", event );
 833
 834                                         // Inform draggable that the helper is in a valid drop zone,
 835                                         // used solely in the revert option to handle "valid/invalid".
 836                                         draggable.dropped = sortable.element;
 837
 838                                         // Need to refreshPositions of all sortables in the case that
 839                                         // adding to one sortable changes the location of the other sortables (#9675)
 840                                         $.each( draggable.sortables, function() {
 841                                                 this.refreshPositions();
 842                                         });
 843
 844                                         // hack so receive/update callbacks work (mostly)
 845                                         draggable.currentItem = draggable.element;
 846                                         sortable.fromOutside = draggable;
 847                                 }
 848
 849                                 if ( sortable.currentItem ) {
 850                                         sortable._mouseDrag( event );
 851                                         // Copy the sortable's position because the draggable's can potentially reflect
 852                                         // a relative position, while sortable is always absolute, which the dragged
 853                                         // element has now become. (#8809)
 854                                         ui.position = sortable.position;
 855                                 }
 856                         } else {
 857                                 // If it doesn't intersect with the sortable, and it intersected before,
 858                                 // we fake the drag stop of the sortable, but make sure it doesn't remove
 859                                 // the helper by using cancelHelperRemoval.
 860                                 if ( sortable.isOver ) {
 861
 862                                         sortable.isOver = 0;
 863                                         sortable.cancelHelperRemoval = true;
 864
 865                                         // Calling sortable's mouseStop would trigger a revert,
 866                                         // so revert must be temporarily false until after mouseStop is called.
 867                                         sortable.options._revert = sortable.options.revert;
 868                                         sortable.options.revert = false;
 869
 870                                         sortable._trigger( "out", event, sortable._uiHash( sortable ) );
 871                                         sortable._mouseStop( event, true );
 872
 873                                         // restore sortable behaviors that were modfied
 874                                         // when the draggable entered the sortable area (#9481)
 875                                         sortable.options.revert = sortable.options._revert;
 876                                         sortable.options.helper = sortable.options._helper;
 877
 878                                         if ( sortable.placeholder ) {
 879                                                 sortable.placeholder.remove();
 880                                         }
 881
 882                                         // Restore and recalculate the draggable's offset considering the sortable
 883                                         // may have modified them in unexpected ways. (#8809, #10669)
 884                                         ui.helper.appendTo( draggable._parent );
 885                                         draggable._refreshOffsets( event );
 886                                         ui.position = draggable._generatePosition( event, true );
 887
 888                                         draggable._trigger( "fromSortable", event );
 889
 890                                         // Inform draggable that the helper is no longer in a valid drop zone
 891                                         draggable.dropped = false;
 892
 893                                         // Need to refreshPositions of all sortables just in case removing
 894                                         // from one sortable changes the location of other sortables (#9675)
 895                                         $.each( draggable.sortables, function() {
 896                                                 this.refreshPositions();
 897                                         });
 898                                 }
 899                         }
 900                 });
 901         }
 902 });
 903
 904 $.ui.plugin.add("draggable", "cursor", {
 905         start: function( event, ui, instance ) {
 906                 var t = $( "body" ),
 907                         o = instance.options;
 908
 909                 if (t.css("cursor")) {
 910                         o._cursor = t.css("cursor");
 911                 }
 912                 t.css("cursor", o.cursor);
 913         },
 914         stop: function( event, ui, instance ) {
 915                 var o = instance.options;
 916                 if (o._cursor) {
 917                         $("body").css("cursor", o._cursor);
 918                 }
 919         }
 920 });
 921
 922 $.ui.plugin.add("draggable", "opacity", {
 923         start: function( event, ui, instance ) {
 924                 var t = $( ui.helper ),
 925                         o = instance.options;
 926                 if (t.css("opacity")) {
 927                         o._opacity = t.css("opacity");
 928                 }
 929                 t.css("opacity", o.opacity);
 930         },
 931         stop: function( event, ui, instance ) {
 932                 var o = instance.options;
 933                 if (o._opacity) {
 934                         $(ui.helper).css("opacity", o._opacity);
 935                 }
 936         }
 937 });
 938
 939 $.ui.plugin.add("draggable", "scroll", {
 940         start: function( event, ui, i ) {
 941                 if ( !i.scrollParentNotHidden ) {
 942                         i.scrollParentNotHidden = i.helper.scrollParent( false );
 943                 }
 944
 945                 if ( i.scrollParentNotHidden[ 0 ] !== i.document[ 0 ] && i.scrollParentNotHidden[ 0 ].tagName !== "HTML" ) {
 946                         i.overflowOffset = i.scrollParentNotHidden.offset();
 947                 }
 948         },
 949         drag: function( event, ui, i  ) {
 950
 951                 var o = i.options,
 952                         scrolled = false,
 953                         scrollParent = i.scrollParentNotHidden[ 0 ],
 954                         document = i.document[ 0 ];
 955
 956                 if ( scrollParent !== document && scrollParent.tagName !== "HTML" ) {
 957                         if ( !o.axis || o.axis !== "x" ) {
 958                                 if ( ( i.overflowOffset.top + scrollParent.offsetHeight ) - event.pageY < o.scrollSensitivity ) {
 959                                         scrollParent.scrollTop = scrolled = scrollParent.scrollTop + o.scrollSpeed;
 960                                 } else if ( event.pageY - i.overflowOffset.top < o.scrollSensitivity ) {
 961                                         scrollParent.scrollTop = scrolled = scrollParent.scrollTop - o.scrollSpeed;
 962                                 }
 963                         }
 964
 965                         if ( !o.axis || o.axis !== "y" ) {
 966                                 if ( ( i.overflowOffset.left + scrollParent.offsetWidth ) - event.pageX < o.scrollSensitivity ) {
 967                                         scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft + o.scrollSpeed;
 968                                 } else if ( event.pageX - i.overflowOffset.left < o.scrollSensitivity ) {
 969                                         scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft - o.scrollSpeed;
 970                                 }
 971                         }
 972
 973                 } else {
 974
 975                         if (!o.axis || o.axis !== "x") {
 976                                 if (event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
 977                                         scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
 978                                 } else if ($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
 979                                         scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
 980                                 }
 981                         }
 982
 983                         if (!o.axis || o.axis !== "y") {
 984                                 if (event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
 985                                         scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
 986                                 } else if ($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
 987                                         scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
 988                                 }
 989                         }
 990
 991                 }
 992
 993                 if (scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
 994                         $.ui.ddmanager.prepareOffsets(i, event);
 995                 }
 996
 997         }
 998 });
 999
1000 $.ui.plugin.add("draggable", "snap", {
1001         start: function( event, ui, i ) {
1002
1003                 var o = i.options;
1004
1005                 i.snapElements = [];
1006
1007                 $(o.snap.constructor !== String ? ( o.snap.items || ":data(ui-draggable)" ) : o.snap).each(function() {
1008                         var $t = $(this),
1009                                 $o = $t.offset();
1010                         if (this !== i.element[0]) {
1011                                 i.snapElements.push({
1012                                         item: this,
1013                                         width: $t.outerWidth(), height: $t.outerHeight(),
1014                                         top: $o.top, left: $o.left
1015                                 });
1016                         }
1017                 });
1018
1019         },
1020         drag: function( event, ui, inst ) {
1021
1022                 var ts, bs, ls, rs, l, r, t, b, i, first,
1023                         o = inst.options,
1024                         d = o.snapTolerance,
1025                         x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
1026                         y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;
1027
1028                 for (i = inst.snapElements.length - 1; i >= 0; i--){
1029
1030                         l = inst.snapElements[i].left - inst.margins.left;
1031                         r = l + inst.snapElements[i].width;
1032                         t = inst.snapElements[i].top - inst.margins.top;
1033                         b = t + inst.snapElements[i].height;
1034
1035                         if ( x2 < l - d || x1 > r + d || y2 < t - d || y1 > b + d || !$.contains( inst.snapElements[ i ].item.ownerDocument, inst.snapElements[ i ].item ) ) {
1036                                 if (inst.snapElements[i].snapping) {
1037                                         (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
1038                                 }
1039                                 inst.snapElements[i].snapping = false;
1040                                 continue;
1041                         }
1042
1043                         if (o.snapMode !== "inner") {
1044                                 ts = Math.abs(t - y2) <= d;
1045                                 bs = Math.abs(b - y1) <= d;
1046                                 ls = Math.abs(l - x2) <= d;
1047                                 rs = Math.abs(r - x1) <= d;
1048                                 if (ts) {
1049                                         ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top;
1050                                 }
1051                                 if (bs) {
1052                                         ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top;
1053                                 }
1054                                 if (ls) {
1055                                         ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left;
1056                                 }
1057                                 if (rs) {
1058                                         ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left;
1059                                 }
1060                         }
1061
1062                         first = (ts || bs || ls || rs);
1063
1064                         if (o.snapMode !== "outer") {
1065                                 ts = Math.abs(t - y1) <= d;
1066                                 bs = Math.abs(b - y2) <= d;
1067                                 ls = Math.abs(l - x1) <= d;
1068                                 rs = Math.abs(r - x2) <= d;
1069                                 if (ts) {
1070                                         ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top;
1071                                 }
1072                                 if (bs) {
1073                                         ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top;
1074                                 }
1075                                 if (ls) {
1076                                         ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left;
1077                                 }
1078                                 if (rs) {
1079                                         ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left;
1080                                 }
1081                         }
1082
1083                         if (!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) {
1084                                 (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
1085                         }
1086                         inst.snapElements[i].snapping = (ts || bs || ls || rs || first);
1087
1088                 }
1089
1090         }
1091 });
1092
1093 $.ui.plugin.add("draggable", "stack", {
1094         start: function( event, ui, instance ) {
1095                 var min,
1096                         o = instance.options,
1097                         group = $.makeArray($(o.stack)).sort(function(a, b) {
1098                                 return (parseInt($(a).css("zIndex"), 10) || 0) - (parseInt($(b).css("zIndex"), 10) || 0);
1099                         });
1100
1101                 if (!group.length) { return; }
1102
1103                 min = parseInt($(group[0]).css("zIndex"), 10) || 0;
1104                 $(group).each(function(i) {
1105                         $(this).css("zIndex", min + i);
1106                 });
1107                 this.css("zIndex", (min + group.length));
1108         }
1109 });
1110
1111 $.ui.plugin.add("draggable", "zIndex", {
1112         start: function( event, ui, instance ) {
1113                 var t = $( ui.helper ),
1114                         o = instance.options;
1115
1116                 if (t.css("zIndex")) {
1117                         o._zIndex = t.css("zIndex");
1118                 }
1119                 t.css("zIndex", o.zIndex);
1120         },
1121         stop: function( event, ui, instance ) {
1122                 var o = instance.options;
1123
1124                 if (o._zIndex) {
1125                         $(ui.helper).css("zIndex", o._zIndex);
1126                 }
1127         }
1128 });
1129
1130 return $.ui.draggable;
1131
1132 }));