js/ui/jquery.ui.draggable.js

   1 /*
   2  * jQuery UI Draggable 1.8.10
   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/Draggables
   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.draggable", $.ui.mouse, {
  18         widgetEventPrefix: "drag",
  19         options: {
  20                 addClasses: true,
  21                 appendTo: "parent",
  22                 axis: false,
  23                 connectToSortable: false,
  24                 containment: false,
  25                 cursor: "auto",
  26                 cursorAt: false,
  27                 grid: false,
  28                 handle: false,
  29                 helper: "original",
  30                 iframeFix: false,
  31                 opacity: false,
  32                 refreshPositions: false,
  33                 revert: false,
  34                 revertDuration: 500,
  35                 scope: "default",
  36                 scroll: true,
  37                 scrollSensitivity: 20,
  38                 scrollSpeed: 20,
  39                 snap: false,
  40                 snapMode: "both",
  41                 snapTolerance: 20,
  42                 stack: false,
  43                 zIndex: false
  44         },
  45         _create: function() {
  46
  47                 if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position")))
  48                         this.element[0].style.position = 'relative';
  49
  50                 (this.options.addClasses && this.element.addClass("ui-draggable"));
  51                 (this.options.disabled && this.element.addClass("ui-draggable-disabled"));
  52
  53                 this._mouseInit();
  54
  55         },
  56
  57         destroy: function() {
  58                 if(!this.element.data('draggable')) return;
  59                 this.element
  60                         .removeData("draggable")
  61                         .unbind(".draggable")
  62                         .removeClass("ui-draggable"
  63                                 + " ui-draggable-dragging"
  64                                 + " ui-draggable-disabled");
  65                 this._mouseDestroy();
  66
  67                 return this;
  68         },
  69
  70         _mouseCapture: function(event) {
  71
  72                 var o = this.options;
  73
  74                 // among others, prevent a drag on a resizable-handle
  75                 if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle'))
  76                         return false;
  77
  78                 //Quit if we're not on a valid handle
  79                 this.handle = this._getHandle(event);
  80                 if (!this.handle)
  81                         return false;
  82
  83                 return true;
  84
  85         },
  86
  87         _mouseStart: function(event) {
  88
  89                 var o = this.options;
  90
  91                 //Create and append the visible helper
  92                 this.helper = this._createHelper(event);
  93
  94                 //Cache the helper size
  95                 this._cacheHelperProportions();
  96
  97                 //If ddmanager is used for droppables, set the global draggable
  98                 if($.ui.ddmanager)
  99                         $.ui.ddmanager.current = this;
 100
 101                 /*
 102                  * - Position generation -
 103                  * This block generates everything position related - it's the core of draggables.
 104                  */
 105
 106                 //Cache the margins of the original element
 107                 this._cacheMargins();
 108
 109                 //Store the helper's css position
 110                 this.cssPosition = this.helper.css("position");
 111                 this.scrollParent = this.helper.scrollParent();
 112
 113                 //The element's absolute position on the page minus margins
 114                 this.offset = this.positionAbs = this.element.offset();
 115                 this.offset = {
 116                         top: this.offset.top - this.margins.top,
 117                         left: this.offset.left - this.margins.left
 118                 };
 119
 120                 $.extend(this.offset, {
 121                         click: { //Where the click happened, relative to the element
 122                                 left: event.pageX - this.offset.left,
 123                                 top: event.pageY - this.offset.top
 124                         },
 125                         parent: this._getParentOffset(),
 126                         relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
 127                 });
 128
 129                 //Generate the original position
 130                 this.originalPosition = this.position = this._generatePosition(event);
 131                 this.originalPageX = event.pageX;
 132                 this.originalPageY = event.pageY;
 133
 134                 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
 135                 (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
 136
 137                 //Set a containment if given in the options
 138                 if(o.containment)
 139                         this._setContainment();
 140
 141                 //Trigger event + callbacks
 142                 if(this._trigger("start", event) === false) {
 143                         this._clear();
 144                         return false;
 145                 }
 146
 147                 //Recache the helper size
 148                 this._cacheHelperProportions();
 149
 150                 //Prepare the droppable offsets
 151                 if ($.ui.ddmanager && !o.dropBehaviour)
 152                         $.ui.ddmanager.prepareOffsets(this, event);
 153
 154                 this.helper.addClass("ui-draggable-dragging");
 155                 this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
 156                 return true;
 157         },
 158
 159         _mouseDrag: function(event, noPropagation) {
 160
 161                 //Compute the helpers position
 162                 this.position = this._generatePosition(event);
 163                 this.positionAbs = this._convertPositionTo("absolute");
 164
 165                 //Call plugins and callbacks and use the resulting position if something is returned
 166                 if (!noPropagation) {
 167                         var ui = this._uiHash();
 168                         if(this._trigger('drag', event, ui) === false) {
 169                                 this._mouseUp({});
 170                                 return false;
 171                         }
 172                         this.position = ui.position;
 173                 }
 174
 175                 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
 176                 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
 177                 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
 178
 179                 return false;
 180         },
 181
 182         _mouseStop: function(event) {
 183
 184                 //If we are using droppables, inform the manager about the drop
 185                 var dropped = false;
 186                 if ($.ui.ddmanager && !this.options.dropBehaviour)
 187                         dropped = $.ui.ddmanager.drop(this, event);
 188
 189                 //if a drop comes from outside (a sortable)
 190                 if(this.dropped) {
 191                         dropped = this.dropped;
 192                         this.dropped = false;
 193                 }
 194
 195                 //if the original element is removed, don't bother to continue if helper is set to "original"
 196                 if((!this.element[0] || !this.element[0].parentNode) && this.options.helper == "original")
 197                         return false;
 198
 199                 if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
 200                         var self = this;
 201                         $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
 202                                 if(self._trigger("stop", event) !== false) {
 203                                         self._clear();
 204                                 }
 205                         });
 206                 } else {
 207                         if(this._trigger("stop", event) !== false) {
 208                                 this._clear();
 209                         }
 210                 }
 211
 212                 return false;
 213         },
 214
 215         cancel: function() {
 216
 217                 if(this.helper.is(".ui-draggable-dragging")) {
 218                         this._mouseUp({});
 219                 } else {
 220                         this._clear();
 221                 }
 222
 223                 return this;
 224
 225         },
 226
 227         _getHandle: function(event) {
 228
 229                 var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
 230                 $(this.options.handle, this.element)
 231                         .find("*")
 232                         .andSelf()
 233                         .each(function() {
 234                                 if(this == event.target) handle = true;
 235                         });
 236
 237                 return handle;
 238
 239         },
 240
 241         _createHelper: function(event) {
 242
 243                 var o = this.options;
 244                 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element);
 245
 246                 if(!helper.parents('body').length)
 247                         helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));
 248
 249                 if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position")))
 250                         helper.css("position", "absolute");
 251
 252                 return helper;
 253
 254         },
 255
 256         _adjustOffsetFromHelper: function(obj) {
 257                 if (typeof obj == 'string') {
 258                         obj = obj.split(' ');
 259                 }
 260                 if ($.isArray(obj)) {
 261                         obj = {left: +obj[0], top: +obj[1] || 0};
 262                 }
 263                 if ('left' in obj) {
 264                         this.offset.click.left = obj.left + this.margins.left;
 265                 }
 266                 if ('right' in obj) {
 267                         this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
 268                 }
 269                 if ('top' in obj) {
 270                         this.offset.click.top = obj.top + this.margins.top;
 271                 }
 272                 if ('bottom' in obj) {
 273                         this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
 274                 }
 275         },
 276
 277         _getParentOffset: function() {
 278
 279                 //Get the offsetParent and cache its position
 280                 this.offsetParent = this.helper.offsetParent();
 281                 var po = this.offsetParent.offset();
 282
 283                 // This is a special case where we need to modify a offset calculated on start, since the following happened:
 284                 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
 285                 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
 286                 //    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
 287                 if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) {
 288                         po.left += this.scrollParent.scrollLeft();
 289                         po.top += this.scrollParent.scrollTop();
 290                 }
 291
 292                 if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
 293                 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
 294                         po = { top: 0, left: 0 };
 295
 296                 return {
 297                         top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
 298                         left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
 299                 };
 300
 301         },
 302
 303         _getRelativeOffset: function() {
 304
 305                 if(this.cssPosition == "relative") {
 306                         var p = this.element.position();
 307                         return {
 308                                 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
 309                                 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
 310                         };
 311                 } else {
 312                         return { top: 0, left: 0 };
 313                 }
 314
 315         },
 316
 317         _cacheMargins: function() {
 318                 this.margins = {
 319                         left: (parseInt(this.element.css("marginLeft"),10) || 0),
 320                         top: (parseInt(this.element.css("marginTop"),10) || 0)
 321                 };
 322         },
 323
 324         _cacheHelperProportions: function() {
 325                 this.helperProportions = {
 326                         width: this.helper.outerWidth(),
 327                         height: this.helper.outerHeight()
 328                 };
 329         },
 330
 331         _setContainment: function() {
 332
 333                 var o = this.options;
 334                 if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
 335                 if(o.containment == 'document' || o.containment == 'window') this.containment = [
 336                         (o.containment == 'document' ? 0 : $(window).scrollLeft()) - this.offset.relative.left - this.offset.parent.left,
 337                         (o.containment == 'document' ? 0 : $(window).scrollTop()) - this.offset.relative.top - this.offset.parent.top,
 338                         (o.containment == 'document' ? 0 : $(window).scrollLeft()) + $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
 339                         (o.containment == 'document' ? 0 : $(window).scrollTop()) + ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
 340                 ];
 341
 342                 if(!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor != Array) {
 343                         var ce = $(o.containment)[0]; if(!ce) return;
 344                         var co = $(o.containment).offset();
 345                         var over = ($(ce).css("overflow") != 'hidden');
 346
 347                         this.containment = [
 348                                 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
 349                                 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
 350                                 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,
 351                                 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
 352                         ];
 353                 } else if(o.containment.constructor == Array) {
 354                         this.containment = o.containment;
 355                 }
 356
 357         },
 358
 359         _convertPositionTo: function(d, pos) {
 360
 361                 if(!pos) pos = this.position;
 362                 var mod = d == "absolute" ? 1 : -1;
 363                 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
 364
 365                 return {
 366                         top: (
 367                                 pos.top                                                                                                                                 // The absolute mouse position
 368                                 + this.offset.relative.top * mod                                                                                // Only for relative positioned nodes: Relative offset from element to offset parent
 369                                 + this.offset.parent.top * mod                                                                                  // The offsetParent's offset without borders (offset + border)
 370                                 - ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
 371                         ),
 372                         left: (
 373                                 pos.left                                                                                                                                // The absolute mouse position
 374                                 + this.offset.relative.left * mod                                                                               // Only for relative positioned nodes: Relative offset from element to offset parent
 375                                 + this.offset.parent.left * mod                                                                                 // The offsetParent's offset without borders (offset + border)
 376                                 - ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
 377                         )
 378                 };
 379
 380         },
 381
 382         _generatePosition: function(event) {
 383
 384                 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);
 385                 var pageX = event.pageX;
 386                 var pageY = event.pageY;
 387
 388                 /*
 389                  * - Position constraining -
 390                  * Constrain the position to a mix of grid, containment.
 391                  */
 392
 393                 if(this.originalPosition) { //If we are not dragging yet, we won't check for options
 394
 395                         if(this.containment) {
 396                                 if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
 397                                 if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
 398                                 if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
 399                                 if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
 400                         }
 401
 402                         if(o.grid) {
 403                                 var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
 404                                 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;
 405
 406                                 var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
 407                                 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;
 408                         }
 409
 410                 }
 411
 412                 return {
 413                         top: (
 414                                 pageY                                                                                                                           // The absolute mouse position
 415                                 - this.offset.click.top                                                                                                 // Click offset (relative to the element)
 416                                 - this.offset.relative.top                                                                                              // Only for relative positioned nodes: Relative offset from element to offset parent
 417                                 - this.offset.parent.top                                                                                                // The offsetParent's offset without borders (offset + border)
 418                                 + ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
 419                         ),
 420                         left: (
 421                                 pageX                                                                                                                           // The absolute mouse position
 422                                 - this.offset.click.left                                                                                                // Click offset (relative to the element)
 423                                 - this.offset.relative.left                                                                                             // Only for relative positioned nodes: Relative offset from element to offset parent
 424                                 - this.offset.parent.left                                                                                               // The offsetParent's offset without borders (offset + border)
 425                                 + ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
 426                         )
 427                 };
 428
 429         },
 430
 431         _clear: function() {
 432                 this.helper.removeClass("ui-draggable-dragging");
 433                 if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove();
 434                 //if($.ui.ddmanager) $.ui.ddmanager.current = null;
 435                 this.helper = null;
 436                 this.cancelHelperRemoval = false;
 437         },
 438
 439         // From now on bulk stuff - mainly helpers
 440
 441         _trigger: function(type, event, ui) {
 442                 ui = ui || this._uiHash();
 443                 $.ui.plugin.call(this, type, [event, ui]);
 444                 if(type == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins
 445                 return $.Widget.prototype._trigger.call(this, type, event, ui);
 446         },
 447
 448         plugins: {},
 449
 450         _uiHash: function(event) {
 451                 return {
 452                         helper: this.helper,
 453                         position: this.position,
 454                         originalPosition: this.originalPosition,
 455                         offset: this.positionAbs
 456                 };
 457         }
 458
 459 });
 460
 461 $.extend($.ui.draggable, {
 462         version: "1.8.10"
 463 });
 464
 465 $.ui.plugin.add("draggable", "connectToSortable", {
 466         start: function(event, ui) {
 467
 468                 var inst = $(this).data("draggable"), o = inst.options,
 469                         uiSortable = $.extend({}, ui, { item: inst.element });
 470                 inst.sortables = [];
 471                 $(o.connectToSortable).each(function() {
 472                         var sortable = $.data(this, 'sortable');
 473                         if (sortable && !sortable.options.disabled) {
 474                                 inst.sortables.push({
 475                                         instance: sortable,
 476                                         shouldRevert: sortable.options.revert
 477                                 });
 478                                 sortable._refreshItems();       //Do a one-time refresh at start to refresh the containerCache
 479                                 sortable._trigger("activate", event, uiSortable);
 480                         }
 481                 });
 482
 483         },
 484         stop: function(event, ui) {
 485
 486                 //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
 487                 var inst = $(this).data("draggable"),
 488                         uiSortable = $.extend({}, ui, { item: inst.element });
 489
 490                 $.each(inst.sortables, function() {
 491                         if(this.instance.isOver) {
 492
 493                                 this.instance.isOver = 0;
 494
 495                                 inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
 496                                 this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
 497
 498                                 //The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: 'valid/invalid'
 499                                 if(this.shouldRevert) this.instance.options.revert = true;
 500
 501                                 //Trigger the stop of the sortable
 502                                 this.instance._mouseStop(event);
 503
 504                                 this.instance.options.helper = this.instance.options._helper;
 505
 506                                 //If the helper has been the original item, restore properties in the sortable
 507                                 if(inst.options.helper == 'original')
 508                                         this.instance.currentItem.css({ top: 'auto', left: 'auto' });
 509
 510                         } else {
 511                                 this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance
 512                                 this.instance._trigger("deactivate", event, uiSortable);
 513                         }
 514
 515                 });
 516
 517         },
 518         drag: function(event, ui) {
 519
 520                 var inst = $(this).data("draggable"), self = this;
 521
 522                 var checkPos = function(o) {
 523                         var dyClick = this.offset.click.top, dxClick = this.offset.click.left;
 524                         var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left;
 525                         var itemHeight = o.height, itemWidth = o.width;
 526                         var itemTop = o.top, itemLeft = o.left;
 527
 528                         return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth);
 529                 };
 530
 531                 $.each(inst.sortables, function(i) {
 532
 533                         //Copy over some variables to allow calling the sortable's native _intersectsWith
 534                         this.instance.positionAbs = inst.positionAbs;
 535                         this.instance.helperProportions = inst.helperProportions;
 536                         this.instance.offset.click = inst.offset.click;
 537
 538                         if(this.instance._intersectsWith(this.instance.containerCache)) {
 539
 540                                 //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
 541                                 if(!this.instance.isOver) {
 542
 543                                         this.instance.isOver = 1;
 544                                         //Now we fake the start of dragging for the sortable instance,
 545                                         //by cloning the list group item, appending it to the sortable and using it as inst.currentItem
 546                                         //We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one)
 547                                         this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);
 548                                         this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
 549                                         this.instance.options.helper = function() { return ui.helper[0]; };
 550
 551                                         event.target = this.instance.currentItem[0];
 552                                         this.instance._mouseCapture(event, true);
 553                                         this.instance._mouseStart(event, true, true);
 554
 555                                         //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
 556                                         this.instance.offset.click.top = inst.offset.click.top;
 557                                         this.instance.offset.click.left = inst.offset.click.left;
 558                                         this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
 559                                         this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;
 560
 561                                         inst._trigger("toSortable", event);
 562                                         inst.dropped = this.instance.element; //draggable revert needs that
 563                                         //hack so receive/update callbacks work (mostly)
 564                                         inst.currentItem = inst.element;
 565                                         this.instance.fromOutside = inst;
 566
 567                                 }
 568
 569                                 //Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable
 570                                 if(this.instance.currentItem) this.instance._mouseDrag(event);
 571
 572                         } else {
 573
 574                                 //If it doesn't intersect with the sortable, and it intersected before,
 575                                 //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
 576                                 if(this.instance.isOver) {
 577
 578                                         this.instance.isOver = 0;
 579                                         this.instance.cancelHelperRemoval = true;
 580
 581                                         //Prevent reverting on this forced stop
 582                                         this.instance.options.revert = false;
 583
 584                                         // The out event needs to be triggered independently
 585                                         this.instance._trigger('out', event, this.instance._uiHash(this.instance));
 586
 587                                         this.instance._mouseStop(event, true);
 588                                         this.instance.options.helper = this.instance.options._helper;
 589
 590                                         //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
 591                                         this.instance.currentItem.remove();
 592                                         if(this.instance.placeholder) this.instance.placeholder.remove();
 593
 594                                         inst._trigger("fromSortable", event);
 595                                         inst.dropped = false; //draggable revert needs that
 596                                 }
 597
 598                         };
 599
 600                 });
 601
 602         }
 603 });
 604
 605 $.ui.plugin.add("draggable", "cursor", {
 606         start: function(event, ui) {
 607                 var t = $('body'), o = $(this).data('draggable').options;
 608                 if (t.css("cursor")) o._cursor = t.css("cursor");
 609                 t.css("cursor", o.cursor);
 610         },
 611         stop: function(event, ui) {
 612                 var o = $(this).data('draggable').options;
 613                 if (o._cursor) $('body').css("cursor", o._cursor);
 614         }
 615 });
 616
 617 $.ui.plugin.add("draggable", "iframeFix", {
 618         start: function(event, ui) {
 619                 var o = $(this).data('draggable').options;
 620                 $(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() {
 621                         $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
 622                         .css({
 623                                 width: this.offsetWidth+"px", height: this.offsetHeight+"px",
 624                                 position: "absolute", opacity: "0.001", zIndex: 1000
 625                         })
 626                         .css($(this).offset())
 627                         .appendTo("body");
 628                 });
 629         },
 630         stop: function(event, ui) {
 631                 $("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers
 632         }
 633 });
 634
 635 $.ui.plugin.add("draggable", "opacity", {
 636         start: function(event, ui) {
 637                 var t = $(ui.helper), o = $(this).data('draggable').options;
 638                 if(t.css("opacity")) o._opacity = t.css("opacity");
 639                 t.css('opacity', o.opacity);
 640         },
 641         stop: function(event, ui) {
 642                 var o = $(this).data('draggable').options;
 643                 if(o._opacity) $(ui.helper).css('opacity', o._opacity);
 644         }
 645 });
 646
 647 $.ui.plugin.add("draggable", "scroll", {
 648         start: function(event, ui) {
 649                 var i = $(this).data("draggable");
 650                 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset();
 651         },
 652         drag: function(event, ui) {
 653
 654                 var i = $(this).data("draggable"), o = i.options, scrolled = false;
 655
 656                 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') {
 657
 658                         if(!o.axis || o.axis != 'x') {
 659                                 if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
 660                                         i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
 661                                 else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity)
 662                                         i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
 663                         }
 664
 665                         if(!o.axis || o.axis != 'y') {
 666                                 if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
 667                                         i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
 668                                 else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity)
 669                                         i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
 670                         }
 671
 672                 } else {
 673
 674                         if(!o.axis || o.axis != 'x') {
 675                                 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
 676                                         scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
 677                                 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
 678                                         scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
 679                         }
 680
 681                         if(!o.axis || o.axis != 'y') {
 682                                 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
 683                                         scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
 684                                 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
 685                                         scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
 686                         }
 687
 688                 }
 689
 690                 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
 691                         $.ui.ddmanager.prepareOffsets(i, event);
 692
 693         }
 694 });
 695
 696 $.ui.plugin.add("draggable", "snap", {
 697         start: function(event, ui) {
 698
 699                 var i = $(this).data("draggable"), o = i.options;
 700                 i.snapElements = [];
 701
 702                 $(o.snap.constructor != String ? ( o.snap.items || ':data(draggable)' ) : o.snap).each(function() {
 703                         var $t = $(this); var $o = $t.offset();
 704                         if(this != i.element[0]) i.snapElements.push({
 705                                 item: this,
 706                                 width: $t.outerWidth(), height: $t.outerHeight(),
 707                                 top: $o.top, left: $o.left
 708                         });
 709                 });
 710
 711         },
 712         drag: function(event, ui) {
 713
 714                 var inst = $(this).data("draggable"), o = inst.options;
 715                 var d = o.snapTolerance;
 716
 717                 var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
 718                         y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;
 719
 720                 for (var i = inst.snapElements.length - 1; i >= 0; i--){
 721
 722                         var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width,
 723                                 t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;
 724
 725                         //Yes, I know, this is insane ;)
 726                         if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) {
 727                                 if(inst.snapElements[i].snapping) (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
 728                                 inst.snapElements[i].snapping = false;
 729                                 continue;
 730                         }
 731
 732                         if(o.snapMode != 'inner') {
 733                                 var ts = Math.abs(t - y2) <= d;
 734                                 var bs = Math.abs(b - y1) <= d;
 735                                 var ls = Math.abs(l - x2) <= d;
 736                                 var rs = Math.abs(r - x1) <= d;
 737                                 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
 738                                 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top;
 739                                 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left;
 740                                 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left;
 741                         }
 742
 743                         var first = (ts || bs || ls || rs);
 744
 745                         if(o.snapMode != 'outer') {
 746                                 var ts = Math.abs(t - y1) <= d;
 747                                 var bs = Math.abs(b - y2) <= d;
 748                                 var ls = Math.abs(l - x1) <= d;
 749                                 var rs = Math.abs(r - x2) <= d;
 750                                 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top;
 751                                 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
 752                                 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left;
 753                                 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left;
 754                         }
 755
 756                         if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first))
 757                                 (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
 758                         inst.snapElements[i].snapping = (ts || bs || ls || rs || first);
 759
 760                 };
 761
 762         }
 763 });
 764
 765 $.ui.plugin.add("draggable", "stack", {
 766         start: function(event, ui) {
 767
 768                 var o = $(this).data("draggable").options;
 769
 770                 var group = $.makeArray($(o.stack)).sort(function(a,b) {
 771                         return (parseInt($(a).css("zIndex"),10) || 0) - (parseInt($(b).css("zIndex"),10) || 0);
 772                 });
 773                 if (!group.length) { return; }
 774
 775                 var min = parseInt(group[0].style.zIndex) || 0;
 776                 $(group).each(function(i) {
 777                         this.style.zIndex = min + i;
 778                 });
 779
 780                 this[0].style.zIndex = min + group.length;
 781
 782         }
 783 });
 784
 785 $.ui.plugin.add("draggable", "zIndex", {
 786         start: function(event, ui) {
 787                 var t = $(ui.helper), o = $(this).data("draggable").options;
 788                 if(t.css("zIndex")) o._zIndex = t.css("zIndex");
 789                 t.css('zIndex', o.zIndex);
 790         },
 791         stop: function(event, ui) {
 792                 var o = $(this).data("draggable").options;
 793                 if(o._zIndex) $(ui.helper).css('zIndex', o._zIndex);
 794         }
 795 });
 796
 797 })(jQuery);