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$.contains(parent, child) || parent == child;\n            } catch (e) {\n                return false;\n            }\n        }\n\n        function defaultHint(element) {\n            return element.clone();\n        }\n\n        function defaultPlaceholder(element) {\n            return element.clone().removeAttr(\"id\").css(\"visibility\", \"hidden\");\n        }\n\n        var Sortable = Widget.extend({\n            init: function(element, options) {\n                var that = this;\n\n                Widget.fn.init.call(that, element, options);\n\n                if (!that.options.placeholder) {\n                    that.options.placeholder = defaultPlaceholder;\n                }\n\n                if (!that.options.hint) {\n                    that.options.hint = defaultHint;\n                }\n\n                that.draggable = that._createDraggable();\n            },\n\n            events: [\n                START,\n                BEFORE_MOVE,\n                MOVE,\n                END,\n                CHANGE,\n                CANCEL\n            ],\n\n            options: {\n                name: \"Sortable\",\n                hint: null,\n                placeholder: null,\n                filter: DEFAULT_FILTER,\n                holdToDrag: false,\n                disabled: null,\n                container: null,\n                connectWith: null,\n                handler: null,\n                cursorOffset: null,\n                axis: null,\n                ignore: null,\n                autoScroll: false,\n                cursor: \"auto\",\n                moveOnDragEnter: false\n            },\n\n            destroy: function() {\n                this.draggable.destroy();\n                Widget.fn.destroy.call(this);\n            },\n\n            _createDraggable: function() {\n                var that = this,\n                    element = that.element,\n                    options = that.options;\n\n                return new kendo.ui.Draggable(element, {\n                    filter: options.filter,\n                    hint: kendo.isFunction(options.hint) ? options.hint : $(options.hint),\n                    holdToDrag: options.holdToDrag,\n                    container: options.container ? $(options.container) : null,\n                    cursorOffset: options.cursorOffset,\n                    axis: options.axis,\n                    ignore: options.ignore,\n                    autoScroll: options.autoScroll,\n                    dragstart: that._dragstart.bind(that),\n                    dragcancel: that._dragcancel.bind(that),\n                    drag: that._drag.bind(that),\n                    dragend: that._dragend.bind(that)\n                });\n            },\n\n            _dragstart: function(e) {\n                var draggedElement = this.draggedElement = e.currentTarget,\n                    disabled = this.options.disabled,\n                    handler = this.options.handler,\n                    _placeholder = this.options.placeholder,\n                    placeholder = this.placeholder = kendo.isFunction(_placeholder) ? $(_placeholder.call(this, draggedElement)) : $(_placeholder);\n\n                if (disabled && draggedElement.is(disabled)) {\n                    e.preventDefault();\n                } else if (handler && !$(e.initialTarget).is(handler)) {\n                    e.preventDefault();\n                } else {\n\n                    if (this.trigger(START, { item: draggedElement, draggableEvent: e })) {\n                        e.preventDefault();\n                    } else {\n                        draggedElement.css(\"display\", \"none\");\n                        draggedElement.before(placeholder);\n\n                        this._setCursor();\n                    }\n\n                }\n            },\n\n            _dragcancel: function() {\n                this._cancel();\n                this.trigger(CANCEL, { item: this.draggedElement });\n\n                this._resetCursor();\n            },\n\n            _drag: function(e) {\n                var draggedElement = this.draggedElement,\n                    target = this._findTarget(e),\n                    targetCenter,\n                    cursorOffset = { left: e.x.location, top: e.y.location },\n                    offsetDelta,\n                    axisDelta = { x: e.x.delta, y: e.y.delta },\n                    direction,\n                    sibling,\n                    getSibling,\n                    axis = this.options.axis,\n                    moveOnDragEnter = this.options.moveOnDragEnter,\n                    eventData = { item: draggedElement, list: this, draggableEvent: e };\n\n                if (axis === \"x\" || axis === \"y\") {\n                    this._movementByAxis(axis, cursorOffset, axisDelta[axis], eventData);\n                    return;\n                }\n\n                if (target) {\n                    targetCenter = this._getElementCenter(target.element);\n\n                    offsetDelta = {\n                        left: Math.round(cursorOffset.left - targetCenter.left),\n                        top: Math.round(cursorOffset.top - targetCenter.top)\n                    };\n\n                    $.extend(eventData, { target: target.element });\n\n                    if (target.appendToBottom) {\n                        this._movePlaceholder(target, null, eventData);\n                        return;\n                    }\n\n                    if (target.appendAfterHidden) {\n                        this._movePlaceholder(target, \"next\", eventData);\n                    }\n\n                    if (this._isFloating(target.element)) { //horizontal\n                        if ((axisDelta.x < 0 && moveOnDragEnter) || (!moveOnDragEnter && offsetDelta.left < 0)) {\n                            direction = \"prev\";\n                        } else if ((axisDelta.x > 0 && moveOnDragEnter) || (!moveOnDragEnter && offsetDelta.left > 0)) {\n                            direction = \"next\";\n                        }\n                    } else { //vertical\n                        if ((axisDelta.y < 0 && moveOnDragEnter) || (!moveOnDragEnter && offsetDelta.top < 0)) {\n                            direction = \"prev\";\n                        } else if ((axisDelta.y > 0 && moveOnDragEnter) || (!moveOnDragEnter && offsetDelta.top > 0)) {\n                            direction = \"next\";\n                        }\n                    }\n\n                    if (direction) {\n                        getSibling = (direction === \"prev\") ? jQuery.fn.prev : jQuery.fn.next;\n\n                        sibling = getSibling.call(target.element);\n\n                        //find the prev/next visible sibling\n                        while (sibling.length && !sibling.is(\":visible\")) {\n                            sibling = getSibling.call(sibling);\n                        }\n\n                        if (sibling[0] != this.placeholder[0]) {\n                            this._movePlaceholder(target, direction, eventData);\n                        }\n                    }\n                }\n            },\n\n            _dragend: function(e) {\n                var placeholder = this.placeholder,\n                    draggedElement = this.draggedElement,\n                    draggedIndex = this.indexOf(draggedElement),\n                    placeholderIndex = this.indexOf(placeholder),\n                    connectWith = this.options.connectWith,\n                    connectedList,\n                    isDefaultPrevented,\n                    eventData,\n                    connectedListEventData;\n\n                this._resetCursor();\n\n                eventData = {\n                    action: ACTION_SORT,\n                    item: draggedElement,\n                    oldIndex: draggedIndex,\n                    newIndex: placeholderIndex,\n                    draggableEvent: e\n                };\n\n                if (placeholderIndex >= 0) {\n                    isDefaultPrevented = this.trigger(END, eventData);\n                } else {\n                    connectedList = placeholder.parents(connectWith).getKendoSortable();\n\n                    eventData.action = ACTION_REMOVE;\n                    connectedListEventData = $.extend({}, eventData, {\n                        action: ACTION_RECEIVE,\n                        oldIndex: MISSING_INDEX,\n                        newIndex: connectedList.indexOf(placeholder)\n                    });\n\n                    isDefaultPrevented = !(!this.trigger(END, eventData) && !connectedList.trigger(END, connectedListEventData));\n                }\n\n                if (isDefaultPrevented || placeholderIndex === draggedIndex) {\n                    this._cancel();\n                    return;\n                }\n\n                placeholder.replaceWith(draggedElement);\n\n                draggedElement.show();\n                this.draggable.dropped = true;\n\n                eventData = {\n                    action: this.indexOf(draggedElement) != MISSING_INDEX ? ACTION_SORT : ACTION_REMOVE,\n                    item: draggedElement,\n                    oldIndex: draggedIndex,\n                    newIndex: this.indexOf(draggedElement),\n                    draggableEvent: e\n                };\n\n                this.trigger(CHANGE, eventData);\n\n                if (connectedList) {\n                    connectedListEventData = $.extend({}, eventData, {\n                        action: ACTION_RECEIVE,\n                        oldIndex: MISSING_INDEX,\n                        newIndex: connectedList.indexOf(draggedElement)\n                    });\n\n                    connectedList.trigger(CHANGE, connectedListEventData);\n                }\n\n            },\n\n            _findTarget: function(e) {\n                var element = this._findElementUnderCursor(e),\n                    items,\n                    connectWith = this.options.connectWith,\n                    node;\n\n                if ($.contains(this.element[0], element)) { //the element is part of the sortable container\n                    items = this.items();\n                    node = items.filter(element)[0] || items.has(element)[0];\n\n                    return node ? { element: $(node), sortable: this } : null;\n                } else if (this.element[0] == element && this._isEmpty()) {\n                    return { element: this.element, sortable: this, appendToBottom: true };\n                } else if (this.element[0] == element && this._isLastHidden()) {\n                    node = this.items().eq(0);\n                    return { element: node , sortable: this, appendAfterHidden: true };\n                } else if (connectWith) { //connected lists are present\n                    return this._searchConnectedTargets(element, e);\n                }\n            },\n\n            _findElementUnderCursor: function(e) {\n                var elementUnderCursor = kendo.elementUnderCursor(e),\n                    draggable = e.sender;\n\n                if (containsOrEqualTo(draggable.hint[0], elementUnderCursor)) {\n                    draggable.hint.hide();\n                    elementUnderCursor = kendo.elementUnderCursor(e);\n                    // IE8 does not return the element in iframe from first attempt\n                    if (!elementUnderCursor) {\n                        elementUnderCursor = kendo.elementUnderCursor(e);\n                    }\n                    draggable.hint.show();\n                }\n\n                return elementUnderCursor;\n            },\n\n            _searchConnectedTargets: function(element, e) {\n                var connected = $(this.options.connectWith),\n                    sortableInstance,\n                    items,\n                    node;\n\n                for (var i = 0; i < connected.length; i++) {\n                    sortableInstance = connected.eq(i).getKendoSortable();\n\n                    if ($.contains(connected[i], element)) {\n                        if (sortableInstance) {\n                            items = sortableInstance.items();\n                            node = items.filter(element)[0] || items.has(element)[0];\n\n                            if (node) {\n                                sortableInstance.placeholder = this.placeholder;\n                                return { element: $(node), sortable: sortableInstance };\n                            } else {\n                                return null;\n                            }\n                        }\n                    } else if (connected[i] == element) {\n                        if (sortableInstance && sortableInstance._isEmpty()) {\n                            return { element: connected.eq(i), sortable: sortableInstance, appendToBottom: true };\n                        } else if (this._isCursorAfterLast(sortableInstance, e)) {\n                            node = sortableInstance.items().last();\n                            return { element: node, sortable: sortableInstance };\n                        }\n                    }\n                }\n\n            },\n\n            _isCursorAfterLast: function(sortable, e) {\n                var lastItem = sortable.items().last(),\n                    cursorOffset = { left: e.x.location, top: e.y.location },\n                    lastItemOffset,\n                    delta;\n\n                lastItemOffset = kendo.getOffset(lastItem);\n                lastItemOffset.top += outerHeight(lastItem);\n                lastItemOffset.left += outerWidth(lastItem);\n\n                if (this._isFloating(lastItem)) { //horizontal\n                    delta = lastItemOffset.left - cursorOffset.left;\n                } else { //vertical\n                    delta = lastItemOffset.top - cursorOffset.top;\n                }\n\n                return delta < 0 ? true : false;\n            },\n\n            _movementByAxis: function(axis, cursorOffset, delta, eventData) {\n                var cursorPosition = (axis === \"x\") ? cursorOffset.left : cursorOffset.top,\n                    target = (delta < 0) ? this.placeholder.prev() : this.placeholder.next(),\n                    items = this.items(),\n                    targetCenter;\n\n                if (target.length && !target.is(\":visible\")) {\n                    target = (delta < 0) ? target.prev() : target.next();\n                }\n\n                if (!items.filter(target).length) {\n                    return;\n                }\n\n                $.extend(eventData, { target: target });\n                targetCenter = this._getElementCenter(target);\n\n                if (targetCenter) {\n                    targetCenter = (axis === \"x\") ? targetCenter.left : targetCenter.top;\n                }\n\n                if (target.length && delta < 0 && cursorPosition - targetCenter < 0) { //prev\n                    this._movePlaceholder({ element: target, sortable: this }, \"prev\", eventData);\n                } else if (target.length && delta > 0 && cursorPosition - targetCenter > 0) { //next\n                    this._movePlaceholder({ element: target, sortable: this }, \"next\", eventData);\n                }\n            },\n\n            _movePlaceholder: function(target, direction, eventData) {\n                var placeholder = this.placeholder;\n\n                if (!target.sortable.trigger(BEFORE_MOVE, eventData)) {\n\n                    if (!direction) {\n                        target.element.append(placeholder);\n                    } else if (direction === \"prev\") {\n                        target.element.before(placeholder);\n                    } else if (direction === \"next\") {\n                        target.element.after(placeholder);\n                    }\n\n                    target.sortable.trigger(MOVE, eventData);\n                }\n            },\n\n            _setCursor: function() {\n                var cursor = this.options.cursor,\n                    body;\n\n                if (cursor && cursor !== \"auto\") {\n                    body = $(document.body);\n\n                    this._originalCursorType = body.css(\"cursor\");\n                    body.css({ \"cursor\": cursor });\n\n                    if (!this._cursorStylesheet) {\n                        this._cursorStylesheet = $(\"<style>* { cursor: \" + cursor + \" !important; }</style>\");\n                    }\n\n                    this._cursorStylesheet.appendTo(body);\n                }\n            },\n\n            _resetCursor: function() {\n                if (this._originalCursorType) {\n                    $(document.body).css(\"cursor\", this._originalCursorType);\n                    this._originalCursorType = null;\n\n                    this._cursorStylesheet.remove();\n                }\n            },\n\n            _getElementCenter: function(element) {\n                var center = element.length ? kendo.getOffset(element) : null;\n                if (center) {\n                    center.top += outerHeight(element) / 2;\n                    center.left += outerWidth(element) / 2;\n                }\n\n                return center;\n            },\n\n            _isFloating: function(item) {\n                var isFloating = /left|right/.test(item.css('float'));\n                var isTable = /inline|table-cell/.test(item.css('display'));\n                var isHorizontalFlex = /flex/.test(item.parent().css('display')) && (/row|row-reverse/.test(item.parent().css('flex-direction')) || !item.parent().css('flex-direction'));\n                return isFloating || isTable || isHorizontalFlex;\n            },\n\n            _cancel: function() {\n                this.draggedElement.show();\n                this.placeholder.remove();\n                this.draggable.dropped = true;\n            },\n\n            _items: function() {\n                var filter = this.options.filter,\n                    items;\n\n                if (filter) {\n                    items = this.element.find(filter);\n                } else {\n                    items = this.element.children();\n                }\n\n                return items;\n            },\n\n            indexOf: function(element) {\n                var items = this._items(),\n                    placeholder = this.placeholder,\n                    draggedElement = this.draggedElement;\n\n                if (placeholder && element[0] == placeholder[0]) {\n                    return items.not(draggedElement).index(element);\n                } else {\n                    return items.not(placeholder).index(element);\n                }\n            },\n\n            items: function() {\n                var placeholder = this.placeholder,\n                    items = this._items();\n\n                if (placeholder) {\n                    items = items.not(placeholder);\n                }\n\n                return items;\n            },\n\n            _isEmpty: function() {\n                return !this.items().length;\n            },\n\n            _isLastHidden: function() {\n                return this.items().length === 1 && this.items().is(\":hidden\");\n            }\n\n        });\n\n        kendo.ui.plugin(Sortable);\n    })(window.kendo.jQuery);\n\n}));\n"]}