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1
/*
2
 * jQuery UI Draggable 1.8.6
3
 *
4
 * Copyright 2010, 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
196
		if(!this.element[0] || !this.element[0].parentNode)
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
			0 - this.offset.relative.left - this.offset.parent.left,
337
			0 - this.offset.relative.top - this.offset.parent.top,
338
			$(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
339
			($(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: "1.8.6"
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);
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