resources/jquery.ui/jquery.ui.sortable.js

   1 /*
   2  * jQuery UI Sortable 1.8.18
   3  *
   4  * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
   5  * Dual licensed under the MIT or GPL Version 2 licenses.
   6  * http://jquery.org/license
   7  *
   8  * http://docs.jquery.com/UI/Sortables
   9  *
  10  * Depends:
  11  *      jquery.ui.core.js
  12  *      jquery.ui.mouse.js
  13  *      jquery.ui.widget.js
  14  */
  15 (function( $, undefined ) {
  16
  17 $.widget("ui.sortable", $.ui.mouse, {
  18         widgetEventPrefix: "sort",
  19         ready: false,
  20         options: {
  21                 appendTo: "parent",
  22                 axis: false,
  23                 connectWith: false,
  24                 containment: false,
  25                 cursor: 'auto',
  26                 cursorAt: false,
  27                 dropOnEmpty: true,
  28                 forcePlaceholderSize: false,
  29                 forceHelperSize: false,
  30                 grid: false,
  31                 handle: false,
  32                 helper: "original",
  33                 items: '> *',
  34                 opacity: false,
  35                 placeholder: false,
  36                 revert: false,
  37                 scroll: true,
  38                 scrollSensitivity: 20,
  39                 scrollSpeed: 20,
  40                 scope: "default",
  41                 tolerance: "intersect",
  42                 zIndex: 1000
  43         },
  44         _create: function() {
  45
  46                 var o = this.options;
  47                 this.containerCache = {};
  48                 this.element.addClass("ui-sortable");
  49
  50                 //Get the items
  51                 this.refresh();
  52
  53                 //Let's determine if the items are being displayed horizontally
  54                 this.floating = this.items.length ? o.axis === 'x' || (/left|right/).test(this.items[0].item.css('float')) || (/inline|table-cell/).test(this.items[0].item.css('display')) : false;
  55
  56                 //Let's determine the parent's offset
  57                 this.offset = this.element.offset();
  58
  59                 //Initialize mouse events for interaction
  60                 this._mouseInit();
  61
  62                 //We're ready to go
  63                 this.ready = true
  64
  65         },
  66
  67         destroy: function() {
  68                 $.Widget.prototype.destroy.call( this );
  69                 this.element
  70                         .removeClass("ui-sortable ui-sortable-disabled");
  71                 this._mouseDestroy();
  72
  73                 for ( var i = this.items.length - 1; i >= 0; i-- )
  74                         this.items[i].item.removeData(this.widgetName + "-item");
  75
  76                 return this;
  77         },
  78
  79         _setOption: function(key, value){
  80                 if ( key === "disabled" ) {
  81                         this.options[ key ] = value;
  82
  83                         this.widget()
  84                                 [ value ? "addClass" : "removeClass"]( "ui-sortable-disabled" );
  85                 } else {
  86                         // Don't call widget base _setOption for disable as it adds ui-state-disabled class
  87                         $.Widget.prototype._setOption.apply(this, arguments);
  88                 }
  89         },
  90
  91         _mouseCapture: function(event, overrideHandle) {
  92                 var that = this;
  93
  94                 if (this.reverting) {
  95                         return false;
  96                 }
  97
  98                 if(this.options.disabled || this.options.type == 'static') return false;
  99
 100                 //We have to refresh the items data once first
 101                 this._refreshItems(event);
 102
 103                 //Find out if the clicked node (or one of its parents) is a actual item in this.items
 104                 var currentItem = null, self = this, nodes = $(event.target).parents().each(function() {
 105                         if($.data(this, that.widgetName + '-item') == self) {
 106                                 currentItem = $(this);
 107                                 return false;
 108                         }
 109                 });
 110                 if($.data(event.target, that.widgetName + '-item') == self) currentItem = $(event.target);
 111
 112                 if(!currentItem) return false;
 113                 if(this.options.handle && !overrideHandle) {
 114                         var validHandle = false;
 115
 116                         $(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == event.target) validHandle = true; });
 117                         if(!validHandle) return false;
 118                 }
 119
 120                 this.currentItem = currentItem;
 121                 this._removeCurrentsFromItems();
 122                 return true;
 123
 124         },
 125
 126         _mouseStart: function(event, overrideHandle, noActivation) {
 127
 128                 var o = this.options, self = this;
 129                 this.currentContainer = this;
 130
 131                 //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
 132                 this.refreshPositions();
 133
 134                 //Create and append the visible helper
 135                 this.helper = this._createHelper(event);
 136
 137                 //Cache the helper size
 138                 this._cacheHelperProportions();
 139
 140                 /*
 141                  * - Position generation -
 142                  * This block generates everything position related - it's the core of draggables.
 143                  */
 144
 145                 //Cache the margins of the original element
 146                 this._cacheMargins();
 147
 148                 //Get the next scrolling parent
 149                 this.scrollParent = this.helper.scrollParent();
 150
 151                 //The element's absolute position on the page minus margins
 152                 this.offset = this.currentItem.offset();
 153                 this.offset = {
 154                         top: this.offset.top - this.margins.top,
 155                         left: this.offset.left - this.margins.left
 156                 };
 157
 158                 // Only after we got the offset, we can change the helper's position to absolute
 159                 // TODO: Still need to figure out a way to make relative sorting possible
 160                 this.helper.css("position", "absolute");
 161                 this.cssPosition = this.helper.css("position");
 162
 163                 $.extend(this.offset, {
 164                         click: { //Where the click happened, relative to the element
 165                                 left: event.pageX - this.offset.left,
 166                                 top: event.pageY - this.offset.top
 167                         },
 168                         parent: this._getParentOffset(),
 169                         relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
 170                 });
 171
 172                 //Generate the original position
 173                 this.originalPosition = this._generatePosition(event);
 174                 this.originalPageX = event.pageX;
 175                 this.originalPageY = event.pageY;
 176
 177                 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
 178                 (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
 179
 180                 //Cache the former DOM position
 181                 this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
 182
 183                 //If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way
 184                 if(this.helper[0] != this.currentItem[0]) {
 185                         this.currentItem.hide();
 186                 }
 187
 188                 //Create the placeholder
 189                 this._createPlaceholder();
 190
 191                 //Set a containment if given in the options
 192                 if(o.containment)
 193                         this._setContainment();
 194
 195                 if(o.cursor) { // cursor option
 196                         if ($('body').css("cursor")) this._storedCursor = $('body').css("cursor");
 197                         $('body').css("cursor", o.cursor);
 198                 }
 199
 200                 if(o.opacity) { // opacity option
 201                         if (this.helper.css("opacity")) this._storedOpacity = this.helper.css("opacity");
 202                         this.helper.css("opacity", o.opacity);
 203                 }
 204
 205                 if(o.zIndex) { // zIndex option
 206                         if (this.helper.css("zIndex")) this._storedZIndex = this.helper.css("zIndex");
 207                         this.helper.css("zIndex", o.zIndex);
 208                 }
 209
 210                 //Prepare scrolling
 211                 if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML')
 212                         this.overflowOffset = this.scrollParent.offset();
 213
 214                 //Call callbacks
 215                 this._trigger("start", event, this._uiHash());
 216
 217                 //Recache the helper size
 218                 if(!this._preserveHelperProportions)
 219                         this._cacheHelperProportions();
 220
 221
 222                 //Post 'activate' events to possible containers
 223                 if(!noActivation) {
 224                          for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._trigger("activate", event, self._uiHash(this)); }
 225                 }
 226
 227                 //Prepare possible droppables
 228                 if($.ui.ddmanager)
 229                         $.ui.ddmanager.current = this;
 230
 231                 if ($.ui.ddmanager && !o.dropBehaviour)
 232                         $.ui.ddmanager.prepareOffsets(this, event);
 233
 234                 this.dragging = true;
 235
 236                 this.helper.addClass("ui-sortable-helper");
 237                 this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
 238                 return true;
 239
 240         },
 241
 242         _mouseDrag: function(event) {
 243
 244                 //Compute the helpers position
 245                 this.position = this._generatePosition(event);
 246                 this.positionAbs = this._convertPositionTo("absolute");
 247
 248                 if (!this.lastPositionAbs) {
 249                         this.lastPositionAbs = this.positionAbs;
 250                 }
 251
 252                 //Do scrolling
 253                 if(this.options.scroll) {
 254                         var o = this.options, scrolled = false;
 255                         if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') {
 256
 257                                 if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
 258                                         this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
 259                                 else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity)
 260                                         this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
 261
 262                                 if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
 263                                         this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
 264                                 else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity)
 265                                         this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
 266
 267                         } else {
 268
 269                                 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
 270                                         scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
 271                                 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
 272                                         scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
 273
 274                                 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
 275                                         scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
 276                                 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
 277                                         scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
 278
 279                         }
 280
 281                         if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
 282                                 $.ui.ddmanager.prepareOffsets(this, event);
 283                 }
 284
 285                 //Regenerate the absolute position used for position checks
 286                 this.positionAbs = this._convertPositionTo("absolute");
 287
 288                 //Set the helper position
 289                 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
 290                 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
 291
 292                 //Rearrange
 293                 for (var i = this.items.length - 1; i >= 0; i--) {
 294
 295                         //Cache variables and intersection, continue if no intersection
 296                         var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item);
 297                         if (!intersection) continue;
 298
 299                         if(itemElement != this.currentItem[0] //cannot intersect with itself
 300                                 &&      this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before
 301                                 &&      !$.ui.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked
 302                                 && (this.options.type == 'semi-dynamic' ? !$.ui.contains(this.element[0], itemElement) : true)
 303                                 //&& itemElement.parentNode == this.placeholder[0].parentNode // only rearrange items within the same container
 304                         ) {
 305
 306                                 this.direction = intersection == 1 ? "down" : "up";
 307
 308                                 if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) {
 309                                         this._rearrange(event, item);
 310                                 } else {
 311                                         break;
 312                                 }
 313
 314                                 this._trigger("change", event, this._uiHash());
 315                                 break;
 316                         }
 317                 }
 318
 319                 //Post events to containers
 320                 this._contactContainers(event);
 321
 322                 //Interconnect with droppables
 323                 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
 324
 325                 //Call callbacks
 326                 this._trigger('sort', event, this._uiHash());
 327
 328                 this.lastPositionAbs = this.positionAbs;
 329                 return false;
 330
 331         },
 332
 333         _mouseStop: function(event, noPropagation) {
 334
 335                 if(!event) return;
 336
 337                 //If we are using droppables, inform the manager about the drop
 338                 if ($.ui.ddmanager && !this.options.dropBehaviour)
 339                         $.ui.ddmanager.drop(this, event);
 340
 341                 if(this.options.revert) {
 342                         var self = this;
 343                         var cur = self.placeholder.offset();
 344
 345                         self.reverting = true;
 346
 347                         $(this.helper).animate({
 348                                 left: cur.left - this.offset.parent.left - self.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft),
 349                                 top: cur.top - this.offset.parent.top - self.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)
 350                         }, parseInt(this.options.revert, 10) || 500, function() {
 351                                 self._clear(event);
 352                         });
 353                 } else {
 354                         this._clear(event, noPropagation);
 355                 }
 356
 357                 return false;
 358
 359         },
 360
 361         cancel: function() {
 362
 363                 var self = this;
 364
 365                 if(this.dragging) {
 366
 367                         this._mouseUp({ target: null });
 368
 369                         if(this.options.helper == "original")
 370                                 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
 371                         else
 372                                 this.currentItem.show();
 373
 374                         //Post deactivating events to containers
 375                         for (var i = this.containers.length - 1; i >= 0; i--){
 376                                 this.containers[i]._trigger("deactivate", null, self._uiHash(this));
 377                                 if(this.containers[i].containerCache.over) {
 378                                         this.containers[i]._trigger("out", null, self._uiHash(this));
 379                                         this.containers[i].containerCache.over = 0;
 380                                 }
 381                         }
 382
 383                 }
 384
 385                 if (this.placeholder) {
 386                         //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
 387                         if(this.placeholder[0].parentNode) this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
 388                         if(this.options.helper != "original" && this.helper && this.helper[0].parentNode) this.helper.remove();
 389
 390                         $.extend(this, {
 391                                 helper: null,
 392                                 dragging: false,
 393                                 reverting: false,
 394                                 _noFinalSort: null
 395                         });
 396
 397                         if(this.domPosition.prev) {
 398                                 $(this.domPosition.prev).after(this.currentItem);
 399                         } else {
 400                                 $(this.domPosition.parent).prepend(this.currentItem);
 401                         }
 402                 }
 403
 404                 return this;
 405
 406         },
 407
 408         serialize: function(o) {
 409
 410                 var items = this._getItemsAsjQuery(o && o.connected);
 411                 var str = []; o = o || {};
 412
 413                 $(items).each(function() {
 414                         var res = ($(o.item || this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
 415                         if(res) str.push((o.key || res[1]+'[]')+'='+(o.key && o.expression ? res[1] : res[2]));
 416                 });
 417
 418                 if(!str.length && o.key) {
 419                         str.push(o.key + '=');
 420                 }
 421
 422                 return str.join('&');
 423
 424         },
 425
 426         toArray: function(o) {
 427
 428                 var items = this._getItemsAsjQuery(o && o.connected);
 429                 var ret = []; o = o || {};
 430
 431                 items.each(function() { ret.push($(o.item || this).attr(o.attribute || 'id') || ''); });
 432                 return ret;
 433
 434         },
 435
 436         /* Be careful with the following core functions */
 437         _intersectsWith: function(item) {
 438
 439                 var x1 = this.positionAbs.left,
 440                         x2 = x1 + this.helperProportions.width,
 441                         y1 = this.positionAbs.top,
 442                         y2 = y1 + this.helperProportions.height;
 443
 444                 var l = item.left,
 445                         r = l + item.width,
 446                         t = item.top,
 447                         b = t + item.height;
 448
 449                 var dyClick = this.offset.click.top,
 450                         dxClick = this.offset.click.left;
 451
 452                 var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;
 453
 454                 if(        this.options.tolerance == "pointer"
 455                         || this.options.forcePointerForContainers
 456                         || (this.options.tolerance != "pointer" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])
 457                 ) {
 458                         return isOverElement;
 459                 } else {
 460
 461                         return (l < x1 + (this.helperProportions.width / 2) // Right Half
 462                                 && x2 - (this.helperProportions.width / 2) < r // Left Half
 463                                 && t < y1 + (this.helperProportions.height / 2) // Bottom Half
 464                                 && y2 - (this.helperProportions.height / 2) < b ); // Top Half
 465
 466                 }
 467         },
 468
 469         _intersectsWithPointer: function(item) {
 470
 471                 var isOverElementHeight = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
 472                         isOverElementWidth = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
 473                         isOverElement = isOverElementHeight && isOverElementWidth,
 474                         verticalDirection = this._getDragVerticalDirection(),
 475                         horizontalDirection = this._getDragHorizontalDirection();
 476
 477                 if (!isOverElement)
 478                         return false;
 479
 480                 return this.floating ?
 481                         ( ((horizontalDirection && horizontalDirection == "right") || verticalDirection == "down") ? 2 : 1 )
 482                         : ( verticalDirection && (verticalDirection == "down" ? 2 : 1) );
 483
 484         },
 485
 486         _intersectsWithSides: function(item) {
 487
 488                 var isOverBottomHalf = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
 489                         isOverRightHalf = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
 490                         verticalDirection = this._getDragVerticalDirection(),
 491                         horizontalDirection = this._getDragHorizontalDirection();
 492
 493                 if (this.floating && horizontalDirection) {
 494                         return ((horizontalDirection == "right" && isOverRightHalf) || (horizontalDirection == "left" && !isOverRightHalf));
 495                 } else {
 496                         return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) || (verticalDirection == "up" && !isOverBottomHalf));
 497                 }
 498
 499         },
 500
 501         _getDragVerticalDirection: function() {
 502                 var delta = this.positionAbs.top - this.lastPositionAbs.top;
 503                 return delta != 0 && (delta > 0 ? "down" : "up");
 504         },
 505
 506         _getDragHorizontalDirection: function() {
 507                 var delta = this.positionAbs.left - this.lastPositionAbs.left;
 508                 return delta != 0 && (delta > 0 ? "right" : "left");
 509         },
 510
 511         refresh: function(event) {
 512                 this._refreshItems(event);
 513                 this.refreshPositions();
 514                 return this;
 515         },
 516
 517         _connectWith: function() {
 518                 var options = this.options;
 519                 return options.connectWith.constructor == String
 520                         ? [options.connectWith]
 521                         : options.connectWith;
 522         },
 523
 524         _getItemsAsjQuery: function(connected) {
 525
 526                 var self = this;
 527                 var items = [];
 528                 var queries = [];
 529                 var connectWith = this._connectWith();
 530
 531                 if(connectWith && connected) {
 532                         for (var i = connectWith.length - 1; i >= 0; i--){
 533                                 var cur = $(connectWith[i]);
 534                                 for (var j = cur.length - 1; j >= 0; j--){
 535                                         var inst = $.data(cur[j], this.widgetName);
 536                                         if(inst && inst != this && !inst.options.disabled) {
 537                                                 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), inst]);
 538                                         }
 539                                 };
 540                         };
 541                 }
 542
 543                 queries.push([$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), this]);
 544
 545                 for (var i = queries.length - 1; i >= 0; i--){
 546                         queries[i][0].each(function() {
 547                                 items.push(this);
 548                         });
 549                 };
 550
 551                 return $(items);
 552
 553         },
 554
 555         _removeCurrentsFromItems: function() {
 556
 557                 var list = this.currentItem.find(":data(" + this.widgetName + "-item)");
 558
 559                 for (var i=0; i < this.items.length; i++) {
 560
 561                         for (var j=0; j < list.length; j++) {
 562                                 if(list[j] == this.items[i].item[0])
 563                                         this.items.splice(i,1);
 564                         };
 565
 566                 };
 567
 568         },
 569
 570         _refreshItems: function(event) {
 571
 572                 this.items = [];
 573                 this.containers = [this];
 574                 var items = this.items;
 575                 var self = this;
 576                 var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]];
 577                 var connectWith = this._connectWith();
 578
 579                 if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down
 580                         for (var i = connectWith.length - 1; i >= 0; i--){
 581                                 var cur = $(connectWith[i]);
 582                                 for (var j = cur.length - 1; j >= 0; j--){
 583                                         var inst = $.data(cur[j], this.widgetName);
 584                                         if(inst && inst != this && !inst.options.disabled) {
 585                                                 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
 586                                                 this.containers.push(inst);
 587                                         }
 588                                 };
 589                         };
 590                 }
 591
 592                 for (var i = queries.length - 1; i >= 0; i--) {
 593                         var targetData = queries[i][1];
 594                         var _queries = queries[i][0];
 595
 596                         for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) {
 597                                 var item = $(_queries[j]);
 598
 599                                 item.data(this.widgetName + '-item', targetData); // Data for target checking (mouse manager)
 600
 601                                 items.push({
 602                                         item: item,
 603                                         instance: targetData,
 604                                         width: 0, height: 0,
 605                                         left: 0, top: 0
 606                                 });
 607                         };
 608                 };
 609
 610         },
 611
 612         refreshPositions: function(fast) {
 613
 614                 //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
 615                 if(this.offsetParent && this.helper) {
 616                         this.offset.parent = this._getParentOffset();
 617                 }
 618
 619                 for (var i = this.items.length - 1; i >= 0; i--){
 620                         var item = this.items[i];
 621
 622                         //We ignore calculating positions of all connected containers when we're not over them
 623                         if(item.instance != this.currentContainer && this.currentContainer && item.item[0] != this.currentItem[0])
 624                                 continue;
 625
 626                         var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
 627
 628                         if (!fast) {
 629                                 item.width = t.outerWidth();
 630                                 item.height = t.outerHeight();
 631                         }
 632
 633                         var p = t.offset();
 634                         item.left = p.left;
 635                         item.top = p.top;
 636                 };
 637
 638                 if(this.options.custom && this.options.custom.refreshContainers) {
 639                         this.options.custom.refreshContainers.call(this);
 640                 } else {
 641                         for (var i = this.containers.length - 1; i >= 0; i--){
 642                                 var p = this.containers[i].element.offset();
 643                                 this.containers[i].containerCache.left = p.left;
 644                                 this.containers[i].containerCache.top = p.top;
 645                                 this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
 646                                 this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
 647                         };
 648                 }
 649
 650                 return this;
 651         },
 652
 653         _createPlaceholder: function(that) {
 654
 655                 var self = that || this, o = self.options;
 656
 657                 if(!o.placeholder || o.placeholder.constructor == String) {
 658                         var className = o.placeholder;
 659                         o.placeholder = {
 660                                 element: function() {
 661
 662                                         var el = $(document.createElement(self.currentItem[0].nodeName))
 663                                                 .addClass(className || self.currentItem[0].className+" ui-sortable-placeholder")
 664                                                 .removeClass("ui-sortable-helper")[0];
 665
 666                                         if(!className)
 667                                                 el.style.visibility = "hidden";
 668
 669                                         return el;
 670                                 },
 671                                 update: function(container, p) {
 672
 673                                         // 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
 674                                         // 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
 675                                         if(className && !o.forcePlaceholderSize) return;
 676
 677                                         //If the element doesn't have a actual height by itself (without styles coming from a stylesheet), it receives the inline height from the dragged item
 678                                         if(!p.height()) { p.height(self.currentItem.innerHeight() - parseInt(self.currentItem.css('paddingTop')||0, 10) - parseInt(self.currentItem.css('paddingBottom')||0, 10)); };
 679                                         if(!p.width()) { p.width(self.currentItem.innerWidth() - parseInt(self.currentItem.css('paddingLeft')||0, 10) - parseInt(self.currentItem.css('paddingRight')||0, 10)); };
 680                                 }
 681                         };
 682                 }
 683
 684                 //Create the placeholder
 685                 self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem));
 686
 687                 //Append it after the actual current item
 688                 self.currentItem.after(self.placeholder);
 689
 690                 //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
 691                 o.placeholder.update(self, self.placeholder);
 692
 693         },
 694
 695         _contactContainers: function(event) {
 696
 697                 // get innermost container that intersects with item
 698                 var innermostContainer = null, innermostIndex = null;
 699
 700
 701                 for (var i = this.containers.length - 1; i >= 0; i--){
 702
 703                         // never consider a container that's located within the item itself
 704                         if($.ui.contains(this.currentItem[0], this.containers[i].element[0]))
 705                                 continue;
 706
 707                         if(this._intersectsWith(this.containers[i].containerCache)) {
 708
 709                                 // if we've already found a container and it's more "inner" than this, then continue
 710                                 if(innermostContainer && $.ui.contains(this.containers[i].element[0], innermostContainer.element[0]))
 711                                         continue;
 712
 713                                 innermostContainer = this.containers[i];
 714                                 innermostIndex = i;
 715
 716                         } else {
 717                                 // container doesn't intersect. trigger "out" event if necessary
 718                                 if(this.containers[i].containerCache.over) {
 719                                         this.containers[i]._trigger("out", event, this._uiHash(this));
 720                                         this.containers[i].containerCache.over = 0;
 721                                 }
 722                         }
 723
 724                 }
 725
 726                 // if no intersecting containers found, return
 727                 if(!innermostContainer) return;
 728
 729                 // move the item into the container if it's not there already
 730                 if(this.containers.length === 1) {
 731                         this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
 732                         this.containers[innermostIndex].containerCache.over = 1;
 733                 } else if(this.currentContainer != this.containers[innermostIndex]) {
 734
 735                         //When entering a new container, we will find the item with the least distance and append our item near it
 736                         var dist = 10000; var itemWithLeastDistance = null; var base = this.positionAbs[this.containers[innermostIndex].floating ? 'left' : 'top'];
 737                         for (var j = this.items.length - 1; j >= 0; j--) {
 738                                 if(!$.ui.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) continue;
 739                                 var cur = this.items[j][this.containers[innermostIndex].floating ? 'left' : 'top'];
 740                                 if(Math.abs(cur - base) < dist) {
 741                                         dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
 742                                 }
 743                         }
 744
 745                         if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled
 746                                 return;
 747
 748                         this.currentContainer = this.containers[innermostIndex];
 749                         itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
 750                         this._trigger("change", event, this._uiHash());
 751                         this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
 752
 753                         //Update the placeholder
 754                         this.options.placeholder.update(this.currentContainer, this.placeholder);
 755
 756                         this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
 757                         this.containers[innermostIndex].containerCache.over = 1;
 758                 }
 759
 760
 761         },
 762
 763         _createHelper: function(event) {
 764
 765                 var o = this.options;
 766                 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper == 'clone' ? this.currentItem.clone() : this.currentItem);
 767
 768                 if(!helper.parents('body').length) //Add the helper to the DOM if that didn't happen already
 769                         $(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
 770
 771                 if(helper[0] == this.currentItem[0])
 772                         this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
 773
 774                 if(helper[0].style.width == '' || o.forceHelperSize) helper.width(this.currentItem.width());
 775                 if(helper[0].style.height == '' || o.forceHelperSize) helper.height(this.currentItem.height());
 776
 777                 return helper;
 778
 779         },
 780
 781         _adjustOffsetFromHelper: function(obj) {
 782                 if (typeof obj == 'string') {
 783                         obj = obj.split(' ');
 784                 }
 785                 if ($.isArray(obj)) {
 786                         obj = {left: +obj[0], top: +obj[1] || 0};
 787                 }
 788                 if ('left' in obj) {
 789                         this.offset.click.left = obj.left + this.margins.left;
 790                 }
 791                 if ('right' in obj) {
 792                         this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
 793                 }
 794                 if ('top' in obj) {
 795                         this.offset.click.top = obj.top + this.margins.top;
 796                 }
 797                 if ('bottom' in obj) {
 798                         this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
 799                 }
 800         },
 801
 802         _getParentOffset: function() {
 803
 804
 805                 //Get the offsetParent and cache its position
 806                 this.offsetParent = this.helper.offsetParent();
 807                 var po = this.offsetParent.offset();
 808
 809                 // This is a special case where we need to modify a offset calculated on start, since the following happened:
 810                 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
 811                 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
 812                 //    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
 813                 if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) {
 814                         po.left += this.scrollParent.scrollLeft();
 815                         po.top += this.scrollParent.scrollTop();
 816                 }
 817
 818                 if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
 819                 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
 820                         po = { top: 0, left: 0 };
 821
 822                 return {
 823                         top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
 824                         left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
 825                 };
 826
 827         },
 828
 829         _getRelativeOffset: function() {
 830
 831                 if(this.cssPosition == "relative") {
 832                         var p = this.currentItem.position();
 833                         return {
 834                                 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
 835                                 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
 836                         };
 837                 } else {
 838                         return { top: 0, left: 0 };
 839                 }
 840
 841         },
 842
 843         _cacheMargins: function() {
 844                 this.margins = {
 845                         left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
 846                         top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
 847                 };
 848         },
 849
 850         _cacheHelperProportions: function() {
 851                 this.helperProportions = {
 852                         width: this.helper.outerWidth(),
 853                         height: this.helper.outerHeight()
 854                 };
 855         },
 856
 857         _setContainment: function() {
 858
 859                 var o = this.options;
 860                 if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
 861                 if(o.containment == 'document' || o.containment == 'window') this.containment = [
 862                         0 - this.offset.relative.left - this.offset.parent.left,
 863                         0 - this.offset.relative.top - this.offset.parent.top,
 864                         $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
 865                         ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
 866                 ];
 867
 868                 if(!(/^(document|window|parent)$/).test(o.containment)) {
 869                         var ce = $(o.containment)[0];
 870                         var co = $(o.containment).offset();
 871                         var over = ($(ce).css("overflow") != 'hidden');
 872
 873                         this.containment = [
 874                                 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
 875                                 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
 876                                 co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left,
 877                                 co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top
 878                         ];
 879                 }
 880
 881         },
 882
 883         _convertPositionTo: function(d, pos) {
 884
 885                 if(!pos) pos = this.position;
 886                 var mod = d == "absolute" ? 1 : -1;
 887                 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
 888
 889                 return {
 890                         top: (
 891                                 pos.top                                                                                                                                 // The absolute mouse position
 892                                 + this.offset.relative.top * mod                                                                                // Only for relative positioned nodes: Relative offset from element to offset parent
 893                                 + this.offset.parent.top * mod                                                                                  // The offsetParent's offset without borders (offset + border)
 894                                 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
 895                         ),
 896                         left: (
 897                                 pos.left                                                                                                                                // The absolute mouse position
 898                                 + this.offset.relative.left * mod                                                                               // Only for relative positioned nodes: Relative offset from element to offset parent
 899                                 + this.offset.parent.left * mod                                                                                 // The offsetParent's offset without borders (offset + border)
 900                                 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
 901                         )
 902                 };
 903
 904         },
 905
 906         _generatePosition: function(event) {
 907
 908                 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
 909
 910                 // This is another very weird special case that only happens for relative elements:
 911                 // 1. If the css position is relative
 912                 // 2. and the scroll parent is the document or similar to the offset parent
 913                 // we have to refresh the relative offset during the scroll so there are no jumps
 914                 if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) {
 915                         this.offset.relative = this._getRelativeOffset();
 916                 }
 917
 918                 var pageX = event.pageX;
 919                 var pageY = event.pageY;
 920
 921                 /*
 922                  * - Position constraining -
 923                  * Constrain the position to a mix of grid, containment.
 924                  */
 925
 926                 if(this.originalPosition) { //If we are not dragging yet, we won't check for options
 927
 928                         if(this.containment) {
 929                                 if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
 930                                 if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
 931                                 if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
 932                                 if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
 933                         }
 934
 935                         if(o.grid) {
 936                                 var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
 937                                 pageY = this.containment ? (!(top - this.offset.click.top < this.containment[1] || top - this.offset.click.top > this.containment[3]) ? top : (!(top - this.offset.click.top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
 938
 939                                 var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
 940                                 pageX = this.containment ? (!(left - this.offset.click.left < this.containment[0] || left - this.offset.click.left > this.containment[2]) ? left : (!(left - this.offset.click.left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
 941                         }
 942
 943                 }
 944
 945                 return {
 946                         top: (
 947                                 pageY                                                                                                                           // The absolute mouse position
 948                                 - this.offset.click.top                                                                                                 // Click offset (relative to the element)
 949                                 - this.offset.relative.top                                                                                              // Only for relative positioned nodes: Relative offset from element to offset parent
 950                                 - this.offset.parent.top                                                                                                // The offsetParent's offset without borders (offset + border)
 951                                 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
 952                         ),
 953                         left: (
 954                                 pageX                                                                                                                           // The absolute mouse position
 955                                 - this.offset.click.left                                                                                                // Click offset (relative to the element)
 956                                 - this.offset.relative.left                                                                                             // Only for relative positioned nodes: Relative offset from element to offset parent
 957                                 - this.offset.parent.left                                                                                               // The offsetParent's offset without borders (offset + border)
 958                                 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
 959                         )
 960                 };
 961
 962         },
 963
 964         _rearrange: function(event, i, a, hardRefresh) {
 965
 966                 a ? a[0].appendChild(this.placeholder[0]) : i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction == 'down' ? i.item[0] : i.item[0].nextSibling));
 967
 968                 //Various things done here to improve the performance:
 969                 // 1. we create a setTimeout, that calls refreshPositions
 970                 // 2. on the instance, we have a counter variable, that get's higher after every append
 971                 // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
 972                 // 4. this lets only the last addition to the timeout stack through
 973                 this.counter = this.counter ? ++this.counter : 1;
 974                 var self = this, counter = this.counter;
 975
 976                 window.setTimeout(function() {
 977                         if(counter == self.counter) self.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
 978                 },0);
 979
 980         },
 981
 982         _clear: function(event, noPropagation) {
 983
 984                 this.reverting = false;
 985                 // We delay all events that have to be triggered to after the point where the placeholder has been removed and
 986                 // everything else normalized again
 987                 var delayedTriggers = [], self = this;
 988
 989                 // We first have to update the dom position of the actual currentItem
 990                 // Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
 991                 if(!this._noFinalSort && this.currentItem.parent().length) this.placeholder.before(this.currentItem);
 992                 this._noFinalSort = null;
 993
 994                 if(this.helper[0] == this.currentItem[0]) {
 995                         for(var i in this._storedCSS) {
 996                                 if(this._storedCSS[i] == 'auto' || this._storedCSS[i] == 'static') this._storedCSS[i] = '';
 997                         }
 998                         this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
 999                 } else {
1000                         this.currentItem.show();
1001                 }
1002
1003                 if(this.fromOutside && !noPropagation) delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
1004                 if((this.fromOutside || this.domPosition.prev != this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent != this.currentItem.parent()[0]) && !noPropagation) delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed
1005                 if(!$.ui.contains(this.element[0], this.currentItem[0])) { //Node was moved out of the current element
1006                         if(!noPropagation) delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
1007                         for (var i = this.containers.length - 1; i >= 0; i--){
1008                                 if($.ui.contains(this.containers[i].element[0], this.currentItem[0]) && !noPropagation) {
1009                                         delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
1010                                         delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this));  }; }).call(this, this.containers[i]));
1011                                 }
1012                         };
1013                 };
1014
1015                 //Post events to containers
1016                 for (var i = this.containers.length - 1; i >= 0; i--){
1017                         if(!noPropagation) delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
1018                         if(this.containers[i].containerCache.over) {
1019                                 delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
1020                                 this.containers[i].containerCache.over = 0;
1021                         }
1022                 }
1023
1024                 //Do what was originally in plugins
1025                 if(this._storedCursor) $('body').css("cursor", this._storedCursor); //Reset cursor
1026                 if(this._storedOpacity) this.helper.css("opacity", this._storedOpacity); //Reset opacity
1027                 if(this._storedZIndex) this.helper.css("zIndex", this._storedZIndex == 'auto' ? '' : this._storedZIndex); //Reset z-index
1028
1029                 this.dragging = false;
1030                 if(this.cancelHelperRemoval) {
1031                         if(!noPropagation) {
1032                                 this._trigger("beforeStop", event, this._uiHash());
1033                                 for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
1034                                 this._trigger("stop", event, this._uiHash());
1035                         }
1036                         return false;
1037                 }
1038
1039                 if(!noPropagation) this._trigger("beforeStop", event, this._uiHash());
1040
1041                 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
1042                 this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
1043
1044                 if(this.helper[0] != this.currentItem[0]) this.helper.remove(); this.helper = null;
1045
1046                 if(!noPropagation) {
1047                         for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
1048                         this._trigger("stop", event, this._uiHash());
1049                 }
1050
1051                 this.fromOutside = false;
1052                 return true;
1053
1054         },
1055
1056         _trigger: function() {
1057                 if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
1058                         this.cancel();
1059                 }
1060         },
1061
1062         _uiHash: function(inst) {
1063                 var self = inst || this;
1064                 return {
1065                         helper: self.helper,
1066                         placeholder: self.placeholder || $([]),
1067                         position: self.position,
1068                         originalPosition: self.originalPosition,
1069                         offset: self.positionAbs,
1070                         item: self.currentItem,
1071                         sender: inst ? inst.element : null
1072                 };
1073         }
1074
1075 });
1076
1077 $.extend($.ui.sortable, {
1078         version: "1.8.18"
1079 });
1080
1081 })(jQuery);