2 * jQuery UI Draggable 1.8.2
4 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
5 * Dual licensed under the MIT (MIT-LICENSE.txt)
6 * and GPL (GPL-LICENSE.txt) licenses.
8 * http://docs.jquery.com/UI/Draggables
17 $.widget("ui.draggable", $.ui
.mouse
, {
18 widgetEventPrefix
: "drag",
23 connectToSortable
: false,
32 refreshPositions
: false,
37 scrollSensitivity
: 20,
47 if (this.options
.helper
== 'original' && !(/^(?:r|a|f)/).test(this.element
.css("position")))
48 this.element
[0].style
.position
= 'relative';
50 (this.options
.addClasses
&& this.element
.addClass("ui-draggable"));
51 (this.options
.disabled
&& this.element
.addClass("ui-draggable-disabled"));
58 if(!this.element
.data('draggable')) return;
60 .removeData("draggable")
62 .removeClass("ui-draggable"
63 + " ui-draggable-dragging"
64 + " ui-draggable-disabled");
70 _mouseCapture: function(event
) {
74 // among others, prevent a drag on a resizable-handle
75 if (this.helper
|| o
.disabled
|| $(event
.target
).is('.ui-resizable-handle'))
78 //Quit if we're not on a valid handle
79 this.handle
= this._getHandle(event
);
87 _mouseStart: function(event
) {
91 //Create and append the visible helper
92 this.helper
= this._createHelper(event
);
94 //Cache the helper size
95 this._cacheHelperProportions();
97 //If ddmanager is used for droppables, set the global draggable
99 $.ui
.ddmanager
.current
= this;
102 * - Position generation -
103 * This block generates everything position related - it's the core of draggables.
106 //Cache the margins of the original element
107 this._cacheMargins();
109 //Store the helper's css position
110 this.cssPosition
= this.helper
.css("position");
111 this.scrollParent
= this.helper
.scrollParent();
113 //The element's absolute position on the page minus margins
114 this.offset
= this.positionAbs
= this.element
.offset();
116 top
: this.offset
.top
- this.margins
.top
,
117 left
: this.offset
.left
- this.margins
.left
120 $.extend(this.offset
, {
121 click
: { //Where the click happened, relative to the element
122 left
: event
.pageX
- this.offset
.left
,
123 top
: event
.pageY
- this.offset
.top
125 parent
: this._getParentOffset(),
126 relative
: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
129 //Generate the original position
130 this.originalPosition
= this.position
= this._generatePosition(event
);
131 this.originalPageX
= event
.pageX
;
132 this.originalPageY
= event
.pageY
;
134 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
135 (o
.cursorAt
&& this._adjustOffsetFromHelper(o
.cursorAt
));
137 //Set a containment if given in the options
139 this._setContainment();
141 //Trigger event + callbacks
142 if(this._trigger("start", event
) === false) {
147 //Recache the helper size
148 this._cacheHelperProportions();
150 //Prepare the droppable offsets
151 if ($.ui
.ddmanager
&& !o
.dropBehaviour
)
152 $.ui
.ddmanager
.prepareOffsets(this, event
);
154 this.helper
.addClass("ui-draggable-dragging");
155 this._mouseDrag(event
, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
159 _mouseDrag: function(event
, noPropagation
) {
161 //Compute the helpers position
162 this.position
= this._generatePosition(event
);
163 this.positionAbs
= this._convertPositionTo("absolute");
165 //Call plugins and callbacks and use the resulting position if something is returned
166 if (!noPropagation
) {
167 var ui
= this._uiHash();
168 if(this._trigger('drag', event
, ui
) === false) {
172 this.position
= ui
.position
;
175 if(!this.options
.axis
|| this.options
.axis
!= "y") this.helper
[0].style
.left
= this.position
.left
+'px';
176 if(!this.options
.axis
|| this.options
.axis
!= "x") this.helper
[0].style
.top
= this.position
.top
+'px';
177 if($.ui
.ddmanager
) $.ui
.ddmanager
.drag(this, event
);
182 _mouseStop: function(event
) {
184 //If we are using droppables, inform the manager about the drop
186 if ($.ui
.ddmanager
&& !this.options
.dropBehaviour
)
187 dropped
= $.ui
.ddmanager
.drop(this, event
);
189 //if a drop comes from outside (a sortable)
191 dropped
= this.dropped
;
192 this.dropped
= false;
195 //if the original element is removed, don't bother to continue
196 if(!this.element
[0] || !this.element
[0].parentNode
)
199 if((this.options
.revert
== "invalid" && !dropped
) || (this.options
.revert
== "valid" && dropped
) || this.options
.revert
=== true || ($.isFunction(this.options
.revert
) && this.options
.revert
.call(this.element
, dropped
))) {
201 $(this.helper
).animate(this.originalPosition
, parseInt(this.options
.revertDuration
, 10), function() {
202 if(self
._trigger("stop", event
) !== false) {
207 if(this._trigger("stop", event
) !== false) {
217 if(this.helper
.is(".ui-draggable-dragging")) {
227 _getHandle: function(event
) {
229 var handle
= !this.options
.handle
|| !$(this.options
.handle
, this.element
).length
? true : false;
230 $(this.options
.handle
, this.element
)
234 if(this == event
.target
) handle
= true;
241 _createHelper: function(event
) {
243 var o
= this.options
;
244 var helper
= $.isFunction(o
.helper
) ? $(o
.helper
.apply(this.element
[0], [event
])) : (o
.helper
== 'clone' ? this.element
.clone() : this.element
);
246 if(!helper
.parents('body').length
)
247 helper
.appendTo((o
.appendTo
== 'parent' ? this.element
[0].parentNode
: o
.appendTo
));
249 if(helper
[0] != this.element
[0] && !(/(fixed|absolute)/).test(helper
.css("position")))
250 helper
.css("position", "absolute");
256 _adjustOffsetFromHelper: function(obj
) {
257 if (typeof obj
== 'string') {
258 obj
= obj
.split(' ');
260 if ($.isArray(obj
)) {
261 obj
= {left
: +obj
[0], top
: +obj
[1] || 0};
264 this.offset
.click
.left
= obj
.left
+ this.margins
.left
;
266 if ('right' in obj
) {
267 this.offset
.click
.left
= this.helperProportions
.width
- obj
.right
+ this.margins
.left
;
270 this.offset
.click
.top
= obj
.top
+ this.margins
.top
;
272 if ('bottom' in obj
) {
273 this.offset
.click
.top
= this.helperProportions
.height
- obj
.bottom
+ this.margins
.top
;
277 _getParentOffset: function() {
279 //Get the offsetParent and cache its position
280 this.offsetParent
= this.helper
.offsetParent();
281 var po
= this.offsetParent
.offset();
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();
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 };
297 top
: po
.top
+ (parseInt(this.offsetParent
.css("borderTopWidth"),10) || 0),
298 left
: po
.left
+ (parseInt(this.offsetParent
.css("borderLeftWidth"),10) || 0)
303 _getRelativeOffset: function() {
305 if(this.cssPosition
== "relative") {
306 var p
= this.element
.position();
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()
312 return { top
: 0, left
: 0 };
317 _cacheMargins: function() {
319 left
: (parseInt(this.element
.css("marginLeft"),10) || 0),
320 top
: (parseInt(this.element
.css("marginTop"),10) || 0)
324 _cacheHelperProportions: function() {
325 this.helperProportions
= {
326 width
: this.helper
.outerWidth(),
327 height
: this.helper
.outerHeight()
331 _setContainment: function() {
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
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');
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
353 } else if(o
.containment
.constructor == Array
) {
354 this.containment
= o
.containment
;
359 _convertPositionTo: function(d
, pos
) {
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
&& $.ui
.contains(this.scrollParent
[0], this.offsetParent
[0])) ? this.offsetParent
: this.scrollParent
, scrollIsRootNode
= (/(html|body)/i).test(scroll
[0].tagName
);
367 pos
.top
// The absolute mouse position
368 + this.offset
.relative
.top
* mod
// Only for relative positioned nodes: Relative offset from element to offset parent
369 + this.offset
.parent
.top
* mod
// The offsetParent's offset without borders (offset + border)
370 - ($.browser
.safari
&& $.browser
.version
< 526 && this.cssPosition
== 'fixed' ? 0 : ( this.cssPosition
== 'fixed' ? -this.scrollParent
.scrollTop() : ( scrollIsRootNode
? 0 : scroll
.scrollTop() ) ) * mod
)
373 pos
.left
// The absolute mouse position
374 + this.offset
.relative
.left
* mod
// Only for relative positioned nodes: Relative offset from element to offset parent
375 + this.offset
.parent
.left
* mod
// The offsetParent's offset without borders (offset + border)
376 - ($.browser
.safari
&& $.browser
.version
< 526 && this.cssPosition
== 'fixed' ? 0 : ( this.cssPosition
== 'fixed' ? -this.scrollParent
.scrollLeft() : scrollIsRootNode
? 0 : scroll
.scrollLeft() ) * mod
)
382 _generatePosition: function(event
) {
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
;
389 * - Position constraining -
390 * Constrain the position to a mix of grid, containment.
393 if(this.originalPosition
) { //If we are not dragging yet, we won't check for options
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
;
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
;
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
;
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
&& $.browser
.version
< 526 && this.cssPosition
== 'fixed' ? 0 : ( this.cssPosition
== 'fixed' ? -this.scrollParent
.scrollTop() : ( scrollIsRootNode
? 0 : scroll
.scrollTop() ) ))
421 pageX
// The absolute mouse position
422 - this.offset
.click
.left
// Click offset (relative to the element)
423 - this.offset
.relative
.left
// Only for relative positioned nodes: Relative offset from element to offset parent
424 - this.offset
.parent
.left
// The offsetParent's offset without borders (offset + border)
425 + ($.browser
.safari
&& $.browser
.version
< 526 && this.cssPosition
== 'fixed' ? 0 : ( this.cssPosition
== 'fixed' ? -this.scrollParent
.scrollLeft() : scrollIsRootNode
? 0 : scroll
.scrollLeft() ))
432 this.helper
.removeClass("ui-draggable-dragging");
433 if(this.helper
[0] != this.element
[0] && !this.cancelHelperRemoval
) this.helper
.remove();
434 //if($.ui.ddmanager) $.ui.ddmanager.current = null;
436 this.cancelHelperRemoval
= false;
439 // From now on bulk stuff - mainly helpers
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
);
450 _uiHash: function(event
) {
453 position
: this.position
,
454 originalPosition
: this.originalPosition
,
455 offset
: this.positionAbs
461 $.extend($.ui
.draggable
, {
465 $.ui
.plugin
.add("draggable", "connectToSortable", {
466 start: function(event
, ui
) {
468 var inst
= $(this).data("draggable"), o
= inst
.options
,
469 uiSortable
= $.extend({}, ui
, { item
: inst
.element
});
471 $(o
.connectToSortable
).each(function() {
472 var sortable
= $.data(this, 'sortable');
473 if (sortable
&& !sortable
.options
.disabled
) {
474 inst
.sortables
.push({
476 shouldRevert
: sortable
.options
.revert
478 sortable
._refreshItems(); //Do a one-time refresh at start to refresh the containerCache
479 sortable
._trigger("activate", event
, uiSortable
);
484 stop: function(event
, ui
) {
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
});
490 $.each(inst
.sortables
, function() {
491 if(this.instance
.isOver
) {
493 this.instance
.isOver
= 0;
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)
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;
501 //Trigger the stop of the sortable
502 this.instance
._mouseStop(event
);
504 this.instance
.options
.helper
= this.instance
.options
._helper
;
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' });
511 this.instance
.cancelHelperRemoval
= false; //Remove the helper in the sortable instance
512 this.instance
._trigger("deactivate", event
, uiSortable
);
518 drag: function(event
, ui
) {
520 var inst
= $(this).data("draggable"), self
= this;
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
;
528 return $.ui
.isOver(helperTop
+ dyClick
, helperLeft
+ dxClick
, itemTop
, itemLeft
, itemHeight
, itemWidth
);
531 $.each(inst
.sortables
, function(i
) {
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
;
538 if(this.instance
._intersectsWith(this.instance
.containerCache
)) {
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
) {
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]; };
551 event
.target
= this.instance
.currentItem
[0];
552 this.instance
._mouseCapture(event
, true);
553 this.instance
._mouseStart(event
, true, true);
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
;
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
;
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
);
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
) {
578 this.instance
.isOver
= 0;
579 this.instance
.cancelHelperRemoval
= true;
581 //Prevent reverting on this forced stop
582 this.instance
.options
.revert
= false;
584 // The out event needs to be triggered independently
585 this.instance
._trigger('out', event
, this.instance
._uiHash(this.instance
));
587 this.instance
._mouseStop(event
, true);
588 this.instance
.options
.helper
= this.instance
.options
._helper
;
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();
594 inst
._trigger("fromSortable", event
);
595 inst
.dropped
= false; //draggable revert needs that
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
);
611 stop: function(event
, ui
) {
612 var o
= $(this).data('draggable').options
;
613 if (o
._cursor
) $('body').css("cursor", o
._cursor
);
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 $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
623 width
: this.offsetWidth
+"px", height
: this.offsetHeight
+"px",
624 position
: "absolute", opacity
: "0.001", zIndex
: 1000
626 .css($(this).offset())
630 stop: function(event
, ui
) {
631 $("div.ui-draggable-iframeFix").each(function() { this.parentNode
.removeChild(this); }); //Remove frame helpers
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
);
641 stop: function(event
, ui
) {
642 var o
= $(this).data('draggable').options
;
643 if(o
._opacity
) $(ui
.helper
).css('opacity', o
._opacity
);
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();
652 drag: function(event
, ui
) {
654 var i
= $(this).data("draggable"), o
= i
.options
, scrolled
= false;
656 if(i
.scrollParent
[0] != document
&& i
.scrollParent
[0].tagName
!= 'HTML') {
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
;
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
;
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
);
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
);
690 if(scrolled
!== false && $.ui
.ddmanager
&& !o
.dropBehaviour
)
691 $.ui
.ddmanager
.prepareOffsets(i
, event
);
696 $.ui
.plugin
.add("draggable", "snap", {
697 start: function(event
, ui
) {
699 var i
= $(this).data("draggable"), o
= i
.options
;
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({
706 width
: $t
.outerWidth(), height
: $t
.outerHeight(),
707 top
: $o
.top
, left
: $o
.left
712 drag: function(event
, ui
) {
714 var inst
= $(this).data("draggable"), o
= inst
.options
;
715 var d
= o
.snapTolerance
;
717 var x1
= ui
.offset
.left
, x2
= x1
+ inst
.helperProportions
.width
,
718 y1
= ui
.offset
.top
, y2
= y1
+ inst
.helperProportions
.height
;
720 for (var i
= inst
.snapElements
.length
- 1; i
>= 0; i
--){
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
;
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;
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
;
743 var first
= (ts
|| bs
|| ls
|| rs
);
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
;
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
);
765 $.ui
.plugin
.add("draggable", "stack", {
766 start: function(event
, ui
) {
768 var o
= $(this).data("draggable").options
;
770 var group
= $.makeArray($(o
.stack
)).sort(function(a
,b
) {
771 return (parseInt($(a
).css("zIndex"),10) || 0) - (parseInt($(b
).css("zIndex"),10) || 0);
773 if (!group
.length
) { return; }
775 var min
= parseInt(group
[0].style
.zIndex
) || 0;
776 $(group
).each(function(i
) {
777 this.style
.zIndex
= min
+ i
;
780 this[0].style
.zIndex
= min
+ group
.length
;
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
);
791 stop: function(event
, ui
) {
792 var o
= $(this).data("draggable").options
;
793 if(o
._zIndex
) $(ui
.helper
).css('zIndex', o
._zIndex
);