assets/javascripts/ui/ui.draggable.js
/*
* jQuery UI Draggable @VERSION
*
* Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* http://docs.jquery.com/UI/Draggables
*
* Depends:
* ui.core.js
*/
(function($) {
$.widget("ui.draggable", $.extend({}, $.ui.mouse, {
_init: function() {
if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position")))
this.element[0].style.position = 'relative';
(this.options.cssNamespace && this.element.addClass(this.options.cssNamespace+"-draggable"));
(this.options.disabled && this.element.addClass('ui-draggable-disabled'));
this._mouseInit();
},
destroy: function() {
if(!this.element.data('draggable')) return;
this.element.removeData("draggable").unbind(".draggable").removeClass('ui-draggable ui-draggable-dragging ui-draggable-disabled');
this._mouseDestroy();
},
_mouseCapture: function(event) {
var o = this.options;
if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle'))
return false;
//Quit if we're not on a valid handle
this.handle = this._getHandle(event);
if (!this.handle)
return false;
return true;
},
_mouseStart: function(event) {
var o = this.options;
//Create and append the visible helper
this.helper = this._createHelper(event);
//Cache the helper size
this._cacheHelperProportions();
//If ddmanager is used for droppables, set the global draggable
if($.ui.ddmanager)
$.ui.ddmanager.current = this;
/*
* - Position generation -
* This block generates everything position related - it's the core of draggables.
*/
//Cache the margins of the original element
this._cacheMargins();
//Store the helper's css position
this.cssPosition = this.helper.css("position");
this.scrollParent = this.helper.scrollParent();
//The element's absolute position on the page minus margins
this.offset = this.element.offset();
this.offset = {
top: this.offset.top - this.margins.top,
left: this.offset.left - this.margins.left
};
$.extend(this.offset, {
click: { //Where the click happened, relative to the element
left: event.pageX - this.offset.left,
top: event.pageY - this.offset.top
},
parent: this._getParentOffset(),
relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
});
//Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
if(o.cursorAt)
this._adjustOffsetFromHelper(o.cursorAt);
//Generate the original position
this.originalPosition = this._generatePosition(event);
//Set a containment if given in the options
if(o.containment)
this._setContainment();
//Call plugins and callbacks
this._propagate("start", event);
//Recache the helper size
this._cacheHelperProportions();
//Prepare the droppable offsets
if ($.ui.ddmanager && !o.dropBehaviour)
$.ui.ddmanager.prepareOffsets(this, event);
this.helper.addClass("ui-draggable-dragging");
this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
return true;
},
_mouseDrag: function(event, noPropagation) {
//Compute the helpers position
this.position = this._generatePosition(event);
this.positionAbs = this._convertPositionTo("absolute");
//Call plugins and callbacks and use the resulting position if something is returned
if(!noPropagation) this.position = this._propagate("drag", event) || this.position;
if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
return false;
},
_mouseStop: function(event) {
//If we are using droppables, inform the manager about the drop
var dropped = false;
if ($.ui.ddmanager && !this.options.dropBehaviour)
var dropped = $.ui.ddmanager.drop(this, event);
if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
var self = this;
$(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
self._propagate("stop", event);
self._clear();
});
} else {
this._propagate("stop", event);
this._clear();
}
return false;
},
_getHandle: function(event) {
var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
$(this.options.handle, this.element)
.find("*")
.andSelf()
.each(function() {
if(this == event.target) handle = true;
});
return handle;
},
_createHelper: function(event) {
var o = this.options;
var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element);
if(!helper.parents('body').length)
helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));
if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position")))
helper.css("position", "absolute");
return helper;
},
_adjustOffsetFromHelper: function(obj) {
if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left;
if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top;
if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
},
_getParentOffset: function() {
this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset(); //Get the offsetParent and cache its position
if((this.offsetParent[0] == document.body && $.browser.mozilla) //Ugly FF3 fix
|| (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
po = { top: 0, left: 0 };
return {
top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
};
},
_getRelativeOffset: function() {
if(this.cssPosition == "relative") {
var p = this.element.position();
return {
top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
};
} else {
return { top: 0, left: 0 };
}
},
_cacheMargins: function() {
this.margins = {
left: (parseInt(this.element.css("marginLeft"),10) || 0),
top: (parseInt(this.element.css("marginTop"),10) || 0)
};
},
_cacheHelperProportions: function() {
this.helperProportions = {
width: this.helper.outerWidth(),
height: this.helper.outerHeight()
};
},
_setContainment: function() {
var o = this.options;
if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
if(o.containment == 'document' || o.containment == 'window') this.containment = [
0 - this.offset.relative.left - this.offset.parent.left,
0 - this.offset.relative.top - this.offset.parent.top,
$(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)
];
if(!(/^(document|window|parent)$/).test(o.containment)) {
var ce = $(o.containment)[0];
var co = $(o.containment).offset();
var over = ($(ce).css("overflow") != 'hidden');
this.containment = [
co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left,
co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top,
co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)
];
}
},
_convertPositionTo: function(d, pos) {
if(!pos) pos = this.position;
var mod = d == "absolute" ? 1 : -1;
var scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
return {
top: (
pos.top // the calculated relative position
+ this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent
+ this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border)
+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod
+ this.margins.top * mod //Add the margin (you don't want the margin counting in intersection methods)
),
left: (
pos.left // the calculated relative position
+ this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent
+ this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border)
+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : ( scrollIsRootNode ? 0 : scroll.scrollLeft() ) ) * mod
+ this.margins.left * mod //Add the margin (you don't want the margin counting in intersection methods)
)
};
},
_generatePosition: function(event) {
var o = this.options, scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
var position = {
top: (
event.pageY // The absolute mouse position
- this.offset.click.top // Click offset (relative to the element)
- this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent
- this.offset.parent.top // The offsetParent's offset without borders (offset + border)
+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) )
),
left: (
event.pageX // The absolute mouse position
- this.offset.click.left // Click offset (relative to the element)
- this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent
- this.offset.parent.left // The offsetParent's offset without borders (offset + border)
+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() )
)
};
if(!this.originalPosition) return position; //If we are not dragging yet, we won't check for options
/*
* - Position constraining -
* Constrain the position to a mix of grid, containment.
*/
if(this.containment) {
if(position.left < this.containment[0]) position.left = this.containment[0];
if(position.top < this.containment[1]) position.top = this.containment[1];
if(position.left > this.containment[2]) position.left = this.containment[2];
if(position.top > this.containment[3]) position.top = this.containment[3];
}
if(o.grid) {
var top = this.originalPosition.top + Math.round((position.top - this.originalPosition.top) / o.grid[1]) * o.grid[1];
position.top = this.containment ? (!(top < this.containment[1] || top > this.containment[3]) ? top : (!(top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
var left = this.originalPosition.left + Math.round((position.left - this.originalPosition.left) / o.grid[0]) * o.grid[0];
position.left = this.containment ? (!(left < this.containment[0] || left > this.containment[2]) ? left : (!(left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
}
return position;
},
_clear: function() {
this.helper.removeClass("ui-draggable-dragging");
if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove();
//if($.ui.ddmanager) $.ui.ddmanager.current = null;
this.helper = null;
this.cancelHelperRemoval = false;
},
// From now on bulk stuff - mainly helpers
_propagate: function(n, event) {
$.ui.plugin.call(this, n, [event, this._uiHash()]);
if(n == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins
return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [event, this._uiHash()], this.options[n]);
},
plugins: {},
_uiHash: function(event) {
return {
helper: this.helper,
position: this.position,
absolutePosition: this.positionAbs,
options: this.options
};
}
}));
$.extend($.ui.draggable, {
version: "@VERSION",
defaults: {
appendTo: "parent",
axis: false,
cancel: ":input",
connectToSortable: false,
containment: false,
cssNamespace: "ui",
cursor: "default",
cursorAt: null,
delay: 0,
distance: 1,
grid: false,
handle: false,
helper: "original",
iframeFix: false,
opacity: 1,
refreshPositions: false,
revert: false,
revertDuration: 500,
scope: "default",
scroll: false,
scrollSensitivity: 20,
scrollSpeed: 20,
snap: false,
snapMode: "both",
snapTolerance: 20,
stack: false,
zIndex: null
}
});
$.ui.plugin.add("draggable", "connectToSortable", {
start: function(event, ui) {
var inst = $(this).data("draggable");
inst.sortables = [];
$(ui.options.connectToSortable).each(function() {
// 'this' points to a string, and should therefore resolved as query, but instead, if the string is assigned to a variable, it loops through the strings properties,
// so we have to append '' to make it anonymous again
$(this+'').each(function() {
if($.data(this, 'sortable')) {
var sortable = $.data(this, 'sortable');
inst.sortables.push({
instance: sortable,
shouldRevert: sortable.options.revert
});
sortable._refreshItems(); //Do a one-time refresh at start to refresh the containerCache
sortable._propagate("activate", event, inst);
}
});
});
},
stop: function(event, ui) {
//If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
var inst = $(this).data("draggable");
$.each(inst.sortables, function() {
if(this.instance.isOver) {
this.instance.isOver = 0;
inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
if(this.shouldRevert) this.instance.options.revert = true; //revert here
this.instance._mouseStop(event);
//Also propagate receive event, since the sortable is actually receiving a element
this.instance.element.triggerHandler("sortreceive", [event, $.extend(this.instance._ui(), { sender: inst.element })], this.instance.options["receive"]);
this.instance.options.helper = this.instance.options._helper;
} else {
this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance
this.instance._propagate("deactivate", event, inst);
}
});
},
drag: function(event, ui) {
var inst = $(this).data("draggable"), self = this;
var checkPos = function(o) {
var dyClick = this.offset.click.top, dxClick = this.offset.click.left;
var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left;
var itemHeight = o.height, itemWidth = o.width;
var itemTop = o.top, itemLeft = o.left;
return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth);
};
$.each(inst.sortables, function(i) {
if(checkPos.call(inst, this.instance.containerCache)) {
//If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
if(!this.instance.isOver) {
this.instance.isOver = 1;
//Now we fake the start of dragging for the sortable instance,
//by cloning the list group item, appending it to the sortable and using it as inst.currentItem
//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)
this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);
this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
this.instance.options.helper = function() { return ui.helper[0]; };
event.target = this.instance.currentItem[0];
this.instance._mouseCapture(event, true);
this.instance._mouseStart(event, true, true);
//Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
this.instance.offset.click.top = inst.offset.click.top;
this.instance.offset.click.left = inst.offset.click.left;
this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;
inst._propagate("toSortable", event);
}
//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
if(this.instance.currentItem) this.instance._mouseDrag(event);
} else {
//If it doesn't intersect with the sortable, and it intersected before,
//we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
if(this.instance.isOver) {
this.instance.isOver = 0;
this.instance.cancelHelperRemoval = true;
this.instance.options.revert = false; //No revert here
this.instance._mouseStop(event, true);
this.instance.options.helper = this.instance.options._helper;
//Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
this.instance.currentItem.remove();
if(this.instance.placeholder) this.instance.placeholder.remove();
inst._propagate("fromSortable", event);
}
};
});
}
});
$.ui.plugin.add("draggable", "cursor", {
start: function(event, ui) {
var t = $('body');
if (t.css("cursor")) ui.options._cursor = t.css("cursor");
t.css("cursor", ui.options.cursor);
},
stop: function(event, ui) {
if (ui.options._cursor) $('body').css("cursor", ui.options._cursor);
}
});
$.ui.plugin.add("draggable", "iframeFix", {
start: function(event, ui) {
$(ui.options.iframeFix === true ? "iframe" : ui.options.iframeFix).each(function() {
$('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
.css({
width: this.offsetWidth+"px", height: this.offsetHeight+"px",
position: "absolute", opacity: "0.001", zIndex: 1000
})
.css($(this).offset())
.appendTo("body");
});
},
stop: function(event, ui) {
$("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers
}
});
$.ui.plugin.add("draggable", "opacity", {
start: function(event, ui) {
var t = $(ui.helper);
if(t.css("opacity")) ui.options._opacity = t.css("opacity");
t.css('opacity', ui.options.opacity);
},
stop: function(event, ui) {
if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity);
}
});
$.ui.plugin.add("draggable", "scroll", {
start: function(event, ui) {
var o = ui.options;
var i = $(this).data("draggable");
if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset();
},
drag: function(event, ui) {
var o = ui.options, scrolled = false;
var i = $(this).data("draggable");
if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') {
if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity)
i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity)
i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
} else {
if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
}
if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
$.ui.ddmanager.prepareOffsets(i, event);
//This is a special case where we need to modify a offset calculated on start, since the following happened:
// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
// the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
if(scrolled !== false && i.cssPosition == 'absolute' && i.scrollParent[0] != document && $.ui.contains(i.scrollParent[0], i.offsetParent[0])) {
i.offset.parent = i._getParentOffset();
}
}
});
$.ui.plugin.add("draggable", "snap", {
start: function(event, ui) {
var inst = $(this).data("draggable");
inst.snapElements = [];
$(ui.options.snap.constructor != String ? ( ui.options.snap.items || ':data(draggable)' ) : ui.options.snap).each(function() {
var $t = $(this); var $o = $t.offset();
if(this != inst.element[0]) inst.snapElements.push({
item: this,
width: $t.outerWidth(), height: $t.outerHeight(),
top: $o.top, left: $o.left
});
});
},
drag: function(event, ui) {
var inst = $(this).data("draggable");
var d = ui.options.snapTolerance;
var x1 = ui.absolutePosition.left, x2 = x1 + inst.helperProportions.width,
y1 = ui.absolutePosition.top, y2 = y1 + inst.helperProportions.height;
for (var i = inst.snapElements.length - 1; i >= 0; i--){
var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width,
t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;
//Yes, I know, this is insane ;)
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))) {
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 })));
inst.snapElements[i].snapping = false;
continue;
}
if(ui.options.snapMode != 'inner') {
var ts = Math.abs(t - y2) <= d;
var bs = Math.abs(b - y1) <= d;
var ls = Math.abs(l - x2) <= d;
var rs = Math.abs(r - x1) <= d;
if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top;
if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top;
if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left;
if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left;
}
var first = (ts || bs || ls || rs);
if(ui.options.snapMode != 'outer') {
var ts = Math.abs(t - y1) <= d;
var bs = Math.abs(b - y2) <= d;
var ls = Math.abs(l - x1) <= d;
var rs = Math.abs(r - x2) <= d;
if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top;
if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top;
if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left;
if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left;
}
if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first))
(inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
inst.snapElements[i].snapping = (ts || bs || ls || rs || first);
};
}
});
$.ui.plugin.add("draggable", "stack", {
start: function(event, ui) {
var group = $.makeArray($(ui.options.stack.group)).sort(function(a,b) {
return (parseInt($(a).css("zIndex"),10) || ui.options.stack.min) - (parseInt($(b).css("zIndex"),10) || ui.options.stack.min);
});
$(group).each(function(i) {
this.style.zIndex = ui.options.stack.min + i;
});
this[0].style.zIndex = ui.options.stack.min + group.length;
}
});
$.ui.plugin.add("draggable", "zIndex", {
start: function(event, ui) {
var t = $(ui.helper);
if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex");
t.css('zIndex', ui.options.zIndex);
},
stop: function(event, ui) {
if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex);
}
});
})(jQuery);