/* * jQuery UI Draggable 1.7.1 * * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.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.addClasses && this.element.addClass("ui-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 }; $.extend(this.offset, { click: { //Where the click happened, relative to the element left: event.pageX - this.offset.left, top: event.pageY - this.offset.top }, parent: this._getParentOffset(), relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper }); //Generate the original position this.originalPosition = this._generatePosition(event); this.originalPageX = event.pageX; this.originalPageY = event.pageY; //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied if (o.cursorAt) this._adjustOffsetFromHelper(o.cursorAt); //Set a containment if given in the options if (o.containment) this._setContainment(); //Call plugins and callbacks this._trigger("start", event); //Recache the helper size this._cacheHelperProportions(); //Prepare the droppable offsets if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, event); this.helper.addClass("ui-draggable-dragging"); this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position return true; }, _mouseDrag: function(event, noPropagation) { //Compute the helpers position this.position = this._generatePosition(event); this.positionAbs = this._convertPositionTo("absolute"); //Call plugins and callbacks and use the resulting position if something is returned if (!noPropagation) { var ui = this._uiHash(); this._trigger('drag', event, ui); this.position = ui.position; } if (!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left + 'px'; if (!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top + 'px'; if ($.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) dropped = $.ui.ddmanager.drop(this, event); //if a drop comes from outside (a sortable) if (this.dropped) { dropped = this.dropped; this.dropped = false; } if ((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) { var self = this; $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() { self._trigger("stop", event); self._clear(); }); } else { this._trigger("stop", event); this._clear(); } return false; }, _getHandle: function(event) { var handle = !this.options.handle || !$(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() { //Get the offsetParent and cache its position this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset(); // 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 (this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) { po.left += this.scrollParent.scrollLeft(); po.top += this.scrollParent.scrollTop(); } if ((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information || (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, $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left, ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top ]; if (!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor != Array) { var ce = $(o.containment)[0]; if (!ce) return; var co = $(o.containment).offset(); var over = ($(ce).css("overflow") != 'hidden'); this.containment = [ co.left + (parseInt($(ce).css("borderLeftWidth"), 10) || 0) + (parseInt($(ce).css("paddingLeft"), 10) || 0) - this.margins.left, co.top + (parseInt($(ce).css("borderTopWidth"), 10) || 0) + (parseInt($(ce).css("paddingTop"), 10) || 0) - this.margins.top, 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, 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 ]; } else if (o.containment.constructor == Array) { this.containment = o.containment; } }, _convertPositionTo: function(d, pos) { if (!pos) pos = this.position; var mod = d == "absolute" ? 1 : -1; var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); return { top: ( pos.top // The absolute mouse position + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border) - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : (this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : (scrollIsRootNode ? 0 : scroll.scrollTop())) * mod) ), left: ( pos.left // The absolute mouse 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) - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : (this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft()) * mod) ) }; }, _generatePosition: function(event) { 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); // This is another very weird special case that only happens for relative elements: // 1. If the css position is relative // 2. and the scroll parent is the document or similar to the offset parent // we have to refresh the relative offset during the scroll so there are no jumps if (this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) { this.offset.relative = this._getRelativeOffset(); } var pageX = event.pageX; var pageY = event.pageY; /* * - Position constraining - * Constrain the position to a mix of grid, containment. */ if (this.originalPosition) { //If we are not dragging yet, we won't check for options if (this.containment) { if (event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left; if (event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top; if (event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left; if (event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top; } if (o.grid) { var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1]; 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; var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0]; 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; } } return { top: ( 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) + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : (this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : (scrollIsRootNode ? 0 : scroll.scrollTop()))) ), left: ( 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) + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : (this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft())) ) }; }, _clear: function() { this.helper.removeClass("ui-draggable-dragging"); if (this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove(); //if($.ui.ddmanager) $.ui.ddmanager.current = null; this.helper = null; this.cancelHelperRemoval = false; }, // From now on bulk stuff - mainly helpers _trigger: function(type, event, ui) { ui = ui || this._uiHash(); $.ui.plugin.call(this, type, [event, ui]); if (type == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins return $.widget.prototype._trigger.call(this, type, event, ui); }, plugins: {}, _uiHash: function(event) { return { helper: this.helper, position: this.position, absolutePosition: this.positionAbs, //deprecated offset: this.positionAbs }; } })); $.extend($.ui.draggable, { version: "1.7.1", eventPrefix: "drag", defaults: { addClasses: true, appendTo: "parent", axis: false, cancel: ":input,option", connectToSortable: false, containment: false, cursor: "auto", cursorAt: false, delay: 0, distance: 1, grid: false, handle: false, helper: "original", iframeFix: false, opacity: false, refreshPositions: false, revert: false, revertDuration: 500, scope: "default", scroll: true, scrollSensitivity: 20, scrollSpeed: 20, snap: false, snapMode: "both", snapTolerance: 20, stack: false, zIndex: false } }); $.ui.plugin.add("draggable", "connectToSortable", { start: function(event, ui) { var inst = $(this).data("draggable"), o = inst.options, uiSortable = $.extend({}, ui, { item: inst.element }); inst.sortables = []; $(o.connectToSortable).each(function() { var sortable = $.data(this, 'sortable'); if (sortable && !sortable.options.disabled) { inst.sortables.push({ instance: sortable, shouldRevert: sortable.options.revert }); sortable._refreshItems(); //Do a one-time refresh at start to refresh the containerCache sortable._trigger("activate", event, uiSortable); } }); }, 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"), uiSortable = $.extend({}, ui, { item: inst.element }); $.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) //The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: 'valid/invalid' if (this.shouldRevert) this.instance.options.revert = true; //Trigger the stop of the sortable this.instance._mouseStop(event); this.instance.options.helper = this.instance.options._helper; //If the helper has been the original item, restore properties in the sortable if (inst.options.helper == 'original') this.instance.currentItem.css({ top: 'auto', left: 'auto' }); } else { this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance this.instance._trigger("deactivate", event, uiSortable); } }); }, 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) { //Copy over some variables to allow calling the sortable's native _intersectsWith this.instance.positionAbs = inst.positionAbs; this.instance.helperProportions = inst.helperProportions; this.instance.offset.click = inst.offset.click; if (this.instance._intersectsWith(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._trigger("toSortable", event); inst.dropped = this.instance.element; //draggable revert needs that //hack so receive/update callbacks work (mostly) inst.currentItem = inst.element; this.instance.fromOutside = inst; } //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; //Prevent reverting on this forced stop this.instance.options.revert = false; // The out event needs to be triggered independently this.instance._trigger('out', event, this.instance._uiHash(this.instance)); 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._trigger("fromSortable", event); inst.dropped = false; //draggable revert needs that } }; }); } }); $.ui.plugin.add("draggable", "cursor", { start: function(event, ui) { var t = $('body'), o = $(this).data('draggable').options; if (t.css("cursor")) o._cursor = t.css("cursor"); t.css("cursor", o.cursor); }, stop: function(event, ui) { var o = $(this).data('draggable').options; if (o._cursor) $('body').css("cursor", o._cursor); } }); $.ui.plugin.add("draggable", "iframeFix", { start: function(event, ui) { var o = $(this).data('draggable').options; $(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() { $('
') .css({ width: this.offsetWidth + "px", height: this.offsetHeight + "px", position: "absolute", opacity: "0.001", zIndex: 1000 }) .css($(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), o = $(this).data('draggable').options; if (t.css("opacity")) o._opacity = t.css("opacity"); t.css('opacity', o.opacity); }, stop: function(event, ui) { var o = $(this).data('draggable').options; if (o._opacity) $(ui.helper).css('opacity', o._opacity); } }); $.ui.plugin.add("draggable", "scroll", { start: function(event, ui) { 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 i = $(this).data("draggable"), o = i.options, scrolled = false; if (i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') { if (!o.axis || o.axis != 'x') { 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 (!o.axis || o.axis != 'y') { 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 (!o.axis || o.axis != 'x') { 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 (!o.axis || o.axis != 'y') { 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); } }); $.ui.plugin.add("draggable", "snap", { start: function(event, ui) { var i = $(this).data("draggable"), o = i.options; i.snapElements = []; $(o.snap.constructor != String ? (o.snap.items || ':data(draggable)') : o.snap).each(function() { var $t = $(this); var $o = $t.offset(); if (this != i.element[0]) i.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"), o = inst.options; var d = o.snapTolerance; var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width, y1 = ui.offset.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 (o.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 - inst.margins.top; if (bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top; if (ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left; if (rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left; } var first = (ts || bs || ls || rs); if (o.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 - inst.margins.top; if (bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top; if (ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left; if (rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.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 o = $(this).data("draggable").options; var group = $.makeArray($(o.stack.group)).sort(function(a, b) { return (parseInt($(a).css("zIndex"), 10) || o.stack.min) - (parseInt($(b).css("zIndex"), 10) || o.stack.min); }); $(group).each(function(i) { this.style.zIndex = o.stack.min + i; }); this[0].style.zIndex = o.stack.min + group.length; } }); $.ui.plugin.add("draggable", "zIndex", { start: function(event, ui) { var t = $(ui.helper), o = $(this).data("draggable").options; if (t.css("zIndex")) o._zIndex = t.css("zIndex"); t.css('zIndex', o.zIndex); }, stop: function(event, ui) { var o = $(this).data("draggable").options; if (o._zIndex) $(ui.helper).css('zIndex', o._zIndex); } }); })(jQuery);