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[elecoma/elecoma.git] / public / javascripts / ui.draggable.js
1 /*
2  * jQuery UI Draggable 1.7.2
3  *
4  * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
5  * Dual licensed under the MIT (MIT-LICENSE.txt)
6  * and GPL (GPL-LICENSE.txt) licenses.
7  *
8  * http://docs.jquery.com/UI/Draggables
9  *
10  * Depends:
11  *      ui.core.js
12  */
13 (function($) {
14
15 $.widget("ui.draggable", $.extend({}, $.ui.mouse, {
16
17         _init: function() {
18
19                 if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position")))
20                         this.element[0].style.position = 'relative';
21
22                 (this.options.addClasses && this.element.addClass("ui-draggable"));
23                 (this.options.disabled && this.element.addClass("ui-draggable-disabled"));
24
25                 this._mouseInit();
26
27         },
28
29         destroy: function() {
30                 if(!this.element.data('draggable')) return;
31                 this.element
32                         .removeData("draggable")
33                         .unbind(".draggable")
34                         .removeClass("ui-draggable"
35                                 + " ui-draggable-dragging"
36                                 + " ui-draggable-disabled");
37                 this._mouseDestroy();
38         },
39
40         _mouseCapture: function(event) {
41
42                 var o = this.options;
43
44                 if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle'))
45                         return false;
46
47                 //Quit if we're not on a valid handle
48                 this.handle = this._getHandle(event);
49                 if (!this.handle)
50                         return false;
51
52                 return true;
53
54         },
55
56         _mouseStart: function(event) {
57
58                 var o = this.options;
59
60                 //Create and append the visible helper
61                 this.helper = this._createHelper(event);
62
63                 //Cache the helper size
64                 this._cacheHelperProportions();
65
66                 //If ddmanager is used for droppables, set the global draggable
67                 if($.ui.ddmanager)
68                         $.ui.ddmanager.current = this;
69
70                 /*
71                  * - Position generation -
72                  * This block generates everything position related - it's the core of draggables.
73                  */
74
75                 //Cache the margins of the original element
76                 this._cacheMargins();
77
78                 //Store the helper's css position
79                 this.cssPosition = this.helper.css("position");
80                 this.scrollParent = this.helper.scrollParent();
81
82                 //The element's absolute position on the page minus margins
83                 this.offset = this.element.offset();
84                 this.offset = {
85                         top: this.offset.top - this.margins.top,
86                         left: this.offset.left - this.margins.left
87                 };
88
89                 $.extend(this.offset, {
90                         click: { //Where the click happened, relative to the element
91                                 left: event.pageX - this.offset.left,
92                                 top: event.pageY - this.offset.top
93                         },
94                         parent: this._getParentOffset(),
95                         relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
96                 });
97
98                 //Generate the original position
99                 this.originalPosition = this._generatePosition(event);
100                 this.originalPageX = event.pageX;
101                 this.originalPageY = event.pageY;
102
103                 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
104                 if(o.cursorAt)
105                         this._adjustOffsetFromHelper(o.cursorAt);
106
107                 //Set a containment if given in the options
108                 if(o.containment)
109                         this._setContainment();
110
111                 //Call plugins and callbacks
112                 this._trigger("start", event);
113
114                 //Recache the helper size
115                 this._cacheHelperProportions();
116
117                 //Prepare the droppable offsets
118                 if ($.ui.ddmanager && !o.dropBehaviour)
119                         $.ui.ddmanager.prepareOffsets(this, event);
120
121                 this.helper.addClass("ui-draggable-dragging");
122                 this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
123                 return true;
124         },
125
126         _mouseDrag: function(event, noPropagation) {
127
128                 //Compute the helpers position
129                 this.position = this._generatePosition(event);
130                 this.positionAbs = this._convertPositionTo("absolute");
131
132                 //Call plugins and callbacks and use the resulting position if something is returned
133                 if (!noPropagation) {
134                         var ui = this._uiHash();
135                         this._trigger('drag', event, ui);
136                         this.position = ui.position;
137                 }
138
139                 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
140                 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
141                 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
142
143                 return false;
144         },
145
146         _mouseStop: function(event) {
147
148                 //If we are using droppables, inform the manager about the drop
149                 var dropped = false;
150                 if ($.ui.ddmanager && !this.options.dropBehaviour)
151                         dropped = $.ui.ddmanager.drop(this, event);
152
153                 //if a drop comes from outside (a sortable)
154                 if(this.dropped) {
155                         dropped = this.dropped;
156                         this.dropped = false;
157                 }
158
159                 if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
160                         var self = this;
161                         $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
162                                 self._trigger("stop", event);
163                                 self._clear();
164                         });
165                 } else {
166                         this._trigger("stop", event);
167                         this._clear();
168                 }
169
170                 return false;
171         },
172
173         _getHandle: function(event) {
174
175                 var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
176                 $(this.options.handle, this.element)
177                         .find("*")
178                         .andSelf()
179                         .each(function() {
180                                 if(this == event.target) handle = true;
181                         });
182
183                 return handle;
184
185         },
186
187         _createHelper: function(event) {
188
189                 var o = this.options;
190                 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element);
191
192                 if(!helper.parents('body').length)
193                         helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));
194
195                 if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position")))
196                         helper.css("position", "absolute");
197
198                 return helper;
199
200         },
201
202         _adjustOffsetFromHelper: function(obj) {
203                 if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left;
204                 if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
205                 if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top;
206                 if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
207         },
208
209         _getParentOffset: function() {
210
211                 //Get the offsetParent and cache its position
212                 this.offsetParent = this.helper.offsetParent();
213                 var po = this.offsetParent.offset();
214
215                 // This is a special case where we need to modify a offset calculated on start, since the following happened:
216                 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
217                 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
218                 //    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
219                 if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) {
220                         po.left += this.scrollParent.scrollLeft();
221                         po.top += this.scrollParent.scrollTop();
222                 }
223
224                 if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
225                 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
226                         po = { top: 0, left: 0 };
227
228                 return {
229                         top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
230                         left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
231                 };
232
233         },
234
235         _getRelativeOffset: function() {
236
237                 if(this.cssPosition == "relative") {
238                         var p = this.element.position();
239                         return {
240                                 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
241                                 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
242                         };
243                 } else {
244                         return { top: 0, left: 0 };
245                 }
246
247         },
248
249         _cacheMargins: function() {
250                 this.margins = {
251                         left: (parseInt(this.element.css("marginLeft"),10) || 0),
252                         top: (parseInt(this.element.css("marginTop"),10) || 0)
253                 };
254         },
255
256         _cacheHelperProportions: function() {
257                 this.helperProportions = {
258                         width: this.helper.outerWidth(),
259                         height: this.helper.outerHeight()
260                 };
261         },
262
263         _setContainment: function() {
264
265                 var o = this.options;
266                 if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
267                 if(o.containment == 'document' || o.containment == 'window') this.containment = [
268                         0 - this.offset.relative.left - this.offset.parent.left,
269                         0 - this.offset.relative.top - this.offset.parent.top,
270                         $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
271                         ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
272                 ];
273
274                 if(!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor != Array) {
275                         var ce = $(o.containment)[0]; if(!ce) return;
276                         var co = $(o.containment).offset();
277                         var over = ($(ce).css("overflow") != 'hidden');
278
279                         this.containment = [
280                                 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
281                                 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
282                                 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,
283                                 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
284                         ];
285                 } else if(o.containment.constructor == Array) {
286                         this.containment = o.containment;
287                 }
288
289         },
290
291         _convertPositionTo: function(d, pos) {
292
293                 if(!pos) pos = this.position;
294                 var mod = d == "absolute" ? 1 : -1;
295                 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
296
297                 return {
298                         top: (
299                                 pos.top                                                                                                                                 // The absolute mouse position
300                                 + this.offset.relative.top * mod                                                                                // Only for relative positioned nodes: Relative offset from element to offset parent
301                                 + this.offset.parent.top * mod                                                                                  // The offsetParent's offset without borders (offset + border)
302                                 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
303                         ),
304                         left: (
305                                 pos.left                                                                                                                                // The absolute mouse position
306                                 + this.offset.relative.left * mod                                                                               // Only for relative positioned nodes: Relative offset from element to offset parent
307                                 + this.offset.parent.left * mod                                                                                 // The offsetParent's offset without borders (offset + border)
308                                 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
309                         )
310                 };
311
312         },
313
314         _generatePosition: function(event) {
315
316                 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);
317
318                 // This is another very weird special case that only happens for relative elements:
319                 // 1. If the css position is relative
320                 // 2. and the scroll parent is the document or similar to the offset parent
321                 // we have to refresh the relative offset during the scroll so there are no jumps
322                 if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) {
323                         this.offset.relative = this._getRelativeOffset();
324                 }
325
326                 var pageX = event.pageX;
327                 var pageY = event.pageY;
328
329                 /*
330                  * - Position constraining -
331                  * Constrain the position to a mix of grid, containment.
332                  */
333
334                 if(this.originalPosition) { //If we are not dragging yet, we won't check for options
335
336                         if(this.containment) {
337                                 if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
338                                 if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
339                                 if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
340                                 if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
341                         }
342
343                         if(o.grid) {
344                                 var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
345                                 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;
346
347                                 var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
348                                 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;
349                         }
350
351                 }
352
353                 return {
354                         top: (
355                                 pageY                                                                                                                           // The absolute mouse position
356                                 - this.offset.click.top                                                                                                 // Click offset (relative to the element)
357                                 - this.offset.relative.top                                                                                              // Only for relative positioned nodes: Relative offset from element to offset parent
358                                 - this.offset.parent.top                                                                                                // The offsetParent's offset without borders (offset + border)
359                                 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
360                         ),
361                         left: (
362                                 pageX                                                                                                                           // The absolute mouse position
363                                 - this.offset.click.left                                                                                                // Click offset (relative to the element)
364                                 - this.offset.relative.left                                                                                             // Only for relative positioned nodes: Relative offset from element to offset parent
365                                 - this.offset.parent.left                                                                                               // The offsetParent's offset without borders (offset + border)
366                                 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
367                         )
368                 };
369
370         },
371
372         _clear: function() {
373                 this.helper.removeClass("ui-draggable-dragging");
374                 if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove();
375                 //if($.ui.ddmanager) $.ui.ddmanager.current = null;
376                 this.helper = null;
377                 this.cancelHelperRemoval = false;
378         },
379
380         // From now on bulk stuff - mainly helpers
381
382         _trigger: function(type, event, ui) {
383                 ui = ui || this._uiHash();
384                 $.ui.plugin.call(this, type, [event, ui]);
385                 if(type == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins
386                 return $.widget.prototype._trigger.call(this, type, event, ui);
387         },
388
389         plugins: {},
390
391         _uiHash: function(event) {
392                 return {
393                         helper: this.helper,
394                         position: this.position,
395                         absolutePosition: this.positionAbs, //deprecated
396                         offset: this.positionAbs
397                 };
398         }
399
400 }));
401
402 $.extend($.ui.draggable, {
403         version: "1.7.2",
404         eventPrefix: "drag",
405         defaults: {
406                 addClasses: true,
407                 appendTo: "parent",
408                 axis: false,
409                 cancel: ":input,option",
410                 connectToSortable: false,
411                 containment: false,
412                 cursor: "auto",
413                 cursorAt: false,
414                 delay: 0,
415                 distance: 1,
416                 grid: false,
417                 handle: false,
418                 helper: "original",
419                 iframeFix: false,
420                 opacity: false,
421                 refreshPositions: false,
422                 revert: false,
423                 revertDuration: 500,
424                 scope: "default",
425                 scroll: true,
426                 scrollSensitivity: 20,
427                 scrollSpeed: 20,
428                 snap: false,
429                 snapMode: "both",
430                 snapTolerance: 20,
431                 stack: false,
432                 zIndex: false
433         }
434 });
435
436 $.ui.plugin.add("draggable", "connectToSortable", {
437         start: function(event, ui) {
438
439                 var inst = $(this).data("draggable"), o = inst.options,
440                         uiSortable = $.extend({}, ui, { item: inst.element });
441                 inst.sortables = [];
442                 $(o.connectToSortable).each(function() {
443                         var sortable = $.data(this, 'sortable');
444                         if (sortable && !sortable.options.disabled) {
445                                 inst.sortables.push({
446                                         instance: sortable,
447                                         shouldRevert: sortable.options.revert
448                                 });
449                                 sortable._refreshItems();       //Do a one-time refresh at start to refresh the containerCache
450                                 sortable._trigger("activate", event, uiSortable);
451                         }
452                 });
453
454         },
455         stop: function(event, ui) {
456
457                 //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
458                 var inst = $(this).data("draggable"),
459                         uiSortable = $.extend({}, ui, { item: inst.element });
460
461                 $.each(inst.sortables, function() {
462                         if(this.instance.isOver) {
463
464                                 this.instance.isOver = 0;
465
466                                 inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
467                                 this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
468
469                                 //The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: 'valid/invalid'
470                                 if(this.shouldRevert) this.instance.options.revert = true;
471
472                                 //Trigger the stop of the sortable
473                                 this.instance._mouseStop(event);
474
475                                 this.instance.options.helper = this.instance.options._helper;
476
477                                 //If the helper has been the original item, restore properties in the sortable
478                                 if(inst.options.helper == 'original')
479                                         this.instance.currentItem.css({ top: 'auto', left: 'auto' });
480
481                         } else {
482                                 this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance
483                                 this.instance._trigger("deactivate", event, uiSortable);
484                         }
485
486                 });
487
488         },
489         drag: function(event, ui) {
490
491                 var inst = $(this).data("draggable"), self = this;
492
493                 var checkPos = function(o) {
494                         var dyClick = this.offset.click.top, dxClick = this.offset.click.left;
495                         var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left;
496                         var itemHeight = o.height, itemWidth = o.width;
497                         var itemTop = o.top, itemLeft = o.left;
498
499                         return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth);
500                 };
501
502                 $.each(inst.sortables, function(i) {
503                         
504                         //Copy over some variables to allow calling the sortable's native _intersectsWith
505                         this.instance.positionAbs = inst.positionAbs;
506                         this.instance.helperProportions = inst.helperProportions;
507                         this.instance.offset.click = inst.offset.click;
508                         
509                         if(this.instance._intersectsWith(this.instance.containerCache)) {
510
511                                 //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
512                                 if(!this.instance.isOver) {
513
514                                         this.instance.isOver = 1;
515                                         //Now we fake the start of dragging for the sortable instance,
516                                         //by cloning the list group item, appending it to the sortable and using it as inst.currentItem
517                                         //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)
518                                         this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);
519                                         this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
520                                         this.instance.options.helper = function() { return ui.helper[0]; };
521
522                                         event.target = this.instance.currentItem[0];
523                                         this.instance._mouseCapture(event, true);
524                                         this.instance._mouseStart(event, true, true);
525
526                                         //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
527                                         this.instance.offset.click.top = inst.offset.click.top;
528                                         this.instance.offset.click.left = inst.offset.click.left;
529                                         this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
530                                         this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;
531
532                                         inst._trigger("toSortable", event);
533                                         inst.dropped = this.instance.element; //draggable revert needs that
534                                         //hack so receive/update callbacks work (mostly)
535                                         inst.currentItem = inst.element;
536                                         this.instance.fromOutside = inst;
537
538                                 }
539
540                                 //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
541                                 if(this.instance.currentItem) this.instance._mouseDrag(event);
542
543                         } else {
544
545                                 //If it doesn't intersect with the sortable, and it intersected before,
546                                 //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
547                                 if(this.instance.isOver) {
548
549                                         this.instance.isOver = 0;
550                                         this.instance.cancelHelperRemoval = true;
551                                         
552                                         //Prevent reverting on this forced stop
553                                         this.instance.options.revert = false;
554                                         
555                                         // The out event needs to be triggered independently
556                                         this.instance._trigger('out', event, this.instance._uiHash(this.instance));
557                                         
558                                         this.instance._mouseStop(event, true);
559                                         this.instance.options.helper = this.instance.options._helper;
560
561                                         //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
562                                         this.instance.currentItem.remove();
563                                         if(this.instance.placeholder) this.instance.placeholder.remove();
564
565                                         inst._trigger("fromSortable", event);
566                                         inst.dropped = false; //draggable revert needs that
567                                 }
568
569                         };
570
571                 });
572
573         }
574 });
575
576 $.ui.plugin.add("draggable", "cursor", {
577         start: function(event, ui) {
578                 var t = $('body'), o = $(this).data('draggable').options;
579                 if (t.css("cursor")) o._cursor = t.css("cursor");
580                 t.css("cursor", o.cursor);
581         },
582         stop: function(event, ui) {
583                 var o = $(this).data('draggable').options;
584                 if (o._cursor) $('body').css("cursor", o._cursor);
585         }
586 });
587
588 $.ui.plugin.add("draggable", "iframeFix", {
589         start: function(event, ui) {
590                 var o = $(this).data('draggable').options;
591                 $(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() {
592                         $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
593                         .css({
594                                 width: this.offsetWidth+"px", height: this.offsetHeight+"px",
595                                 position: "absolute", opacity: "0.001", zIndex: 1000
596                         })
597                         .css($(this).offset())
598                         .appendTo("body");
599                 });
600         },
601         stop: function(event, ui) {
602                 $("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers
603         }
604 });
605
606 $.ui.plugin.add("draggable", "opacity", {
607         start: function(event, ui) {
608                 var t = $(ui.helper), o = $(this).data('draggable').options;
609                 if(t.css("opacity")) o._opacity = t.css("opacity");
610                 t.css('opacity', o.opacity);
611         },
612         stop: function(event, ui) {
613                 var o = $(this).data('draggable').options;
614                 if(o._opacity) $(ui.helper).css('opacity', o._opacity);
615         }
616 });
617
618 $.ui.plugin.add("draggable", "scroll", {
619         start: function(event, ui) {
620                 var i = $(this).data("draggable");
621                 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset();
622         },
623         drag: function(event, ui) {
624
625                 var i = $(this).data("draggable"), o = i.options, scrolled = false;
626
627                 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') {
628
629                         if(!o.axis || o.axis != 'x') {
630                                 if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
631                                         i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
632                                 else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity)
633                                         i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
634                         }
635
636                         if(!o.axis || o.axis != 'y') {
637                                 if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
638                                         i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
639                                 else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity)
640                                         i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
641                         }
642
643                 } else {
644
645                         if(!o.axis || o.axis != 'x') {
646                                 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
647                                         scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
648                                 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
649                                         scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
650                         }
651
652                         if(!o.axis || o.axis != 'y') {
653                                 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
654                                         scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
655                                 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
656                                         scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
657                         }
658
659                 }
660
661                 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
662                         $.ui.ddmanager.prepareOffsets(i, event);
663
664         }
665 });
666
667 $.ui.plugin.add("draggable", "snap", {
668         start: function(event, ui) {
669
670                 var i = $(this).data("draggable"), o = i.options;
671                 i.snapElements = [];
672
673                 $(o.snap.constructor != String ? ( o.snap.items || ':data(draggable)' ) : o.snap).each(function() {
674                         var $t = $(this); var $o = $t.offset();
675                         if(this != i.element[0]) i.snapElements.push({
676                                 item: this,
677                                 width: $t.outerWidth(), height: $t.outerHeight(),
678                                 top: $o.top, left: $o.left
679                         });
680                 });
681
682         },
683         drag: function(event, ui) {
684
685                 var inst = $(this).data("draggable"), o = inst.options;
686                 var d = o.snapTolerance;
687
688                 var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
689                         y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;
690
691                 for (var i = inst.snapElements.length - 1; i >= 0; i--){
692
693                         var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width,
694                                 t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;
695
696                         //Yes, I know, this is insane ;)
697                         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))) {
698                                 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 })));
699                                 inst.snapElements[i].snapping = false;
700                                 continue;
701                         }
702
703                         if(o.snapMode != 'inner') {
704                                 var ts = Math.abs(t - y2) <= d;
705                                 var bs = Math.abs(b - y1) <= d;
706                                 var ls = Math.abs(l - x2) <= d;
707                                 var rs = Math.abs(r - x1) <= d;
708                                 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
709                                 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top;
710                                 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left;
711                                 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left;
712                         }
713
714                         var first = (ts || bs || ls || rs);
715
716                         if(o.snapMode != 'outer') {
717                                 var ts = Math.abs(t - y1) <= d;
718                                 var bs = Math.abs(b - y2) <= d;
719                                 var ls = Math.abs(l - x1) <= d;
720                                 var rs = Math.abs(r - x2) <= d;
721                                 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top;
722                                 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
723                                 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left;
724                                 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left;
725                         }
726
727                         if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first))
728                                 (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
729                         inst.snapElements[i].snapping = (ts || bs || ls || rs || first);
730
731                 };
732
733         }
734 });
735
736 $.ui.plugin.add("draggable", "stack", {
737         start: function(event, ui) {
738
739                 var o = $(this).data("draggable").options;
740
741                 var group = $.makeArray($(o.stack.group)).sort(function(a,b) {
742                         return (parseInt($(a).css("zIndex"),10) || o.stack.min) - (parseInt($(b).css("zIndex"),10) || o.stack.min);
743                 });
744
745                 $(group).each(function(i) {
746                         this.style.zIndex = o.stack.min + i;
747                 });
748
749                 this[0].style.zIndex = o.stack.min + group.length;
750
751         }
752 });
753
754 $.ui.plugin.add("draggable", "zIndex", {
755         start: function(event, ui) {
756                 var t = $(ui.helper), o = $(this).data("draggable").options;
757                 if(t.css("zIndex")) o._zIndex = t.css("zIndex");
758                 t.css('zIndex', o.zIndex);
759         },
760         stop: function(event, ui) {
761                 var o = $(this).data("draggable").options;
762                 if(o._zIndex) $(ui.helper).css('zIndex', o._zIndex);
763         }
764 });
765
766 })(jQuery);