{"version":3,"file":"kendo.treelist.min.js","sources":["kendo.treelist.js"],"sourcesContent":["(function(f, define) {\n    define('kendo.treelist',[\n        \"kendo.dom\",\n        \"kendo.data\",\n        \"kendo.columnsorter\",\n        \"kendo.editable\",\n        \"kendo.window\",\n        \"kendo.filtermenu\",\n        \"kendo.columnmenu\",\n        \"kendo.selectable\",\n        \"kendo.resizable\",\n        \"kendo.treeview.draganddrop\",\n        \"kendo.pager\",\n        'kendo.filtercell',\n        'kendo.textbox',\n        'kendo.form'\n    ], f);\n})(function() {\n\nvar __meta__ = {\n    id: \"treelist\",\n    name: \"TreeList\",\n    category: \"web\",\n    description: \"The TreeList widget displays self-referencing data and offers rich support for interacting with data, sorting, filtering, and selection.\",\n    depends: [ \"dom\", \"data\", \"pager\" ],\n    features: [ {\n        id: \"treelist-sorting\",\n        name: \"Sorting\",\n        description: \"Support for column sorting\",\n        depends: [ \"columnsorter\" ]\n    }, {\n        id: \"treelist-filtering\",\n        name: \"Filtering\",\n        description: \"Support for record filtering\",\n        depends: [ \"filtermenu\" ]\n    }, {\n        id: \"treelist-columnmenu\",\n        name: \"Column menu\",\n        description: \"Support for header column menu\",\n        depends: [ \"columnmenu\" ]\n    }, {\n        id: \"treelist-editing\",\n        name: \"Editing\",\n        description: \"Support for record editing\",\n        depends: [ \"editable\", \"window\", \"textbox\", \"form\" ]\n    }, {\n        id: \"treelist-selection\",\n        name: \"Selection\",\n        description: \"Support for row selection\",\n        depends: [ \"selectable\" ]\n    }, {\n        id: \"treelist-column-resize\",\n        name: \"Column resizing\",\n        description: \"Support for column resizing\",\n        depends: [ \"resizable\" ]\n    }, {\n        id: \"treelist-dragging\",\n        name: \"Drag & Drop\",\n        description: \"Support for drag & drop of rows\",\n        depends: [ \"treeview.draganddrop\" ]\n    }, {\n        id: \"treelist-excel-export\",\n        name: \"Excel export\",\n        description: \"Export data as Excel spreadsheet\",\n        depends: [ \"excel\" ]\n    }, {\n        id: \"treelist-pdf-export\",\n        name: \"PDF export\",\n        description: \"Export data as PDF\",\n        depends: [ \"pdf\", \"drawing\" ]\n    }, {\n        id: \"treelist-paging\",\n        name: \"Paging\",\n        description: \"Support for treelist paging\",\n        depends: [ \"pager\" ]\n    } ]\n};\n\n(function($, undefined) {\n    var data = kendo.data;\n    var kendoDom = kendo.dom;\n    var kendoDomElement = kendoDom.element;\n    var kendoTextElement = kendoDom.text;\n    var kendoHtmlElement = kendoDom.html;\n    var outerWidth = kendo._outerWidth;\n    var keys = kendo.keys;\n    var outerHeight = kendo._outerHeight;\n    var ui = kendo.ui;\n    var DataBoundWidget = ui.DataBoundWidget;\n    var DataSource = data.DataSource;\n    var ObservableArray = data.ObservableArray;\n    var Query = data.Query;\n    var Model = data.Model;\n    var browser = kendo.support.browser;\n    var kendoTemplate = kendo.template;\n    var activeElement = kendo._activeElement;\n    var touchDevice = kendo.support.touch;\n\n    var isArray = Array.isArray;\n    var extend = $.extend;\n    var map = $.map;\n    var grep = $.grep;\n    var inArray = $.inArray;\n    var isPlainObject = $.isPlainObject;\n\n    var push = Array.prototype.push;\n\n    var STRING = \"string\";\n    var CHANGE = \"change\";\n    var ITEM_CHANGE = \"itemChange\";\n    var ERROR = \"error\";\n    var PROGRESS = \"progress\";\n    var DOT = \".\";\n    var NS = \".kendoTreeList\";\n    var CLICK = \"click\";\n    var INPUT = \"input\";\n    var BEFORE_EDIT = \"beforeEdit\";\n    var EDIT = \"edit\";\n    var PAGE = \"page\";\n    var PAGE_CHANGE = \"pageChange\";\n    var SAVE = \"save\";\n    var SAVE_CHANGES = \"saveChanges\";\n    var SORT = \"sort\";\n    var EXPAND = \"expand\";\n    var COLLAPSE = \"collapse\";\n    var CELL_CLOSE = \"cellClose\";\n    var REMOVE = \"remove\";\n    var DATA_CELL = \"td:not(.k-group-cell):not(.k-hierarchy-cell):visible\";\n    var FILTER_CELL = \".k-filter-row th:not(.k-group-cell):not(.k-hierarchy-cell):visible\";\n    var DATABINDING = \"dataBinding\";\n    var DATABOUND = \"dataBound\";\n    var CANCEL = \"cancel\";\n    var TABINDEX = \"tabIndex\";\n    var FILTERMENUINIT = \"filterMenuInit\";\n    var FILTERMENUOPEN = \"filterMenuOpen\";\n    var COLUMNHIDE = \"columnHide\";\n    var COLUMNSHOW = \"columnShow\";\n    var HEADERCELLS = \"th.k-header\";\n    var COLUMNREORDER = \"columnReorder\";\n    var COLUMNRESIZE = \"columnResize\";\n    var COLUMNMENUINIT = \"columnMenuInit\";\n    var COLUMNMENUOPEN = \"columnMenuOpen\";\n    var COLUMNLOCK = \"columnLock\";\n    var COLUMNUNLOCK = \"columnUnlock\";\n    var PARENTIDFIELD = \"parentId\";\n    var DRAGSTART = \"dragstart\";\n    var DRAG = \"drag\";\n    var DROP = \"drop\";\n    var DRAGEND = \"dragend\";\n    var NAVROW = \"tr:visible\";\n    var NAVCELL = \"td:visible\";\n    var NAVHEADER = \"th:visible\";\n    var NORECORDSCLASS = \"k-grid-norecords\";\n    var ITEMROW = \"tr:not(.k-footer-template):visible\";\n    var isRtl = false;\n    var HEIGHT = \"height\";\n    var INCELL = \"incell\";\n    var INLINE = \"inline\";\n    var POPUP = \"popup\";\n    var TABLE = \"table\";\n    var CHECKBOX = \"k-checkbox\";\n    var CHECKBOXINPUT = \"input[data-role='checkbox'].\" + CHECKBOX;\n    var SELECTCOLUMNTMPL = '<input class=\"' + CHECKBOX + ' k-checkbox-md k-rounded-md\" data-role=\"checkbox\" aria-label=\"Select row\" aria-checked=\"false\" type=\"checkbox\">';\n    var SELECTCOLUMNHEADERTMPL = '<input class=\"' + CHECKBOX + ' k-checkbox-md k-rounded-md\" data-role=\"checkbox\" aria-label=\"Select all rows\" aria-checked=\"false\" type=\"checkbox\">';\n    var SELECTED = \"k-selected\";\n    var whitespaceRegExp = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\";\n    var filterRowRegExp = new RegExp(\"(^|\" + whitespaceRegExp + \")\" + \"(k-filter-row)\" + \"(\" + whitespaceRegExp + \"|$)\");\n\n    var classNames = {\n        wrapper: \"k-treelist k-grid k-widget k-grid-display-block\",\n        header: \"k-header\",\n        button: \"k-button\",\n        alt: \"k-alt\",\n        editCell: \"k-edit-cell\",\n        editRow: \"k-grid-edit-row\",\n        dirtyCell: \"k-dirty-cell\",\n        group: \"k-treelist-group\",\n        toolbar: \"k-toolbar\",\n        gridToolbar: \"k-grid-toolbar\",\n        gridHeader: \"k-grid-header\",\n        gridHeaderWrap: \"k-grid-header-wrap\",\n        gridContent: \"k-grid-content\",\n        gridContentWrap: \"k-grid-content\",\n        gridFilter: \"k-grid-filter\",\n        footerTemplate: \"k-footer-template\",\n        focused: \"k-focus\",\n        loading: \"k-i-loading\",\n        refresh: \"k-i-reload\",\n        retry: \"k-request-retry\",\n        selected: \"k-selected\",\n        status: \"k-status\",\n        link: \"k-link\",\n        filterable: \"k-filterable\",\n        icon: \"k-icon\",\n        iconFilter: \"k-i-filter\",\n        iconCollapse: \"k-i-collapse\",\n        iconExpand: \"k-i-expand\",\n        iconHidden: \"k-i-none\",\n        iconPlaceHolder: \"k-icon k-i-none\",\n        input: \"k-input\",\n        dropPositions: \"k-i-insert-up k-i-insert-down k-i-plus k-i-insert-middle\",\n        dropTop: \"k-i-insert-up\",\n        dropBottom: \"k-i-insert-down\",\n        dropAdd: \"k-i-plus\",\n        dropMiddle: \"k-i-insert-middle\",\n        dropDenied: \"k-i-cancel\",\n        dragStatus: \"k-drag-status\",\n        dragClue: \"k-drag-clue\",\n        dragClueText: \"k-clue-text\",\n        headerCellInner: \"k-cell-inner\",\n        columnTitle: \"k-column-title\"\n    };\n\n    var defaultCommands = {\n        create: {\n            imageClass: \"k-i-plus\",\n            className: \"k-grid-add\",\n            methodName: \"addRow\"\n        },\n        createchild: {\n            imageClass: \"k-i-plus\",\n            className: \"k-grid-add\",\n            methodName: \"addRow\"\n        },\n        destroy: {\n            imageClass: \"k-i-close\",\n            className: \"k-grid-delete\",\n            methodName: \"removeRow\"\n        },\n        edit: {\n            imageClass: \"k-i-edit\",\n            className: \"k-grid-edit\",\n            methodName: \"editRow\"\n        },\n        update: {\n            imageClass: \"k-i-check\",\n            className: \"k-button-solid-primary k-grid-update\",\n            methodName: \"saveRow\"\n        },\n        canceledit: {\n            imageClass: \"k-i-cancel\",\n            className: \"k-grid-cancel\",\n            methodName: \"_cancelEdit\"\n        },\n        cancel: {\n            imageClass: \"k-icon k-i-cancel\",\n            text: \"Cancel changes\",\n            className: \"k-grid-cancel-changes\",\n            methodName: \"cancelChanges\"\n        },\n        save: {\n            imageClass: \"k-icon k-i-check\",\n            text: \"Save changes\",\n            className: \"k-grid-save-changes\",\n            methodName: \"saveChanges\"\n        },\n        excel: {\n            imageClass: \"k-i-file-excel\",\n            className: \"k-grid-excel\",\n            methodName: \"saveAsExcel\"\n        },\n        pdf: {\n            imageClass: \"k-i-file-pdf\",\n            className: \"k-grid-pdf\",\n            methodName: \"saveAsPDF\"\n        },\n        search: {\n            template:\n            \"<span class='k-spacer'></span>\" +\n            \"<span class='k-searchbox k-input k-input-md k-rounded-md k-input-solid k-grid-search'>\" +\n                \"<span class='k-input-icon k-icon k-i-search'></span>\" +\n                \"<input autocomplete='off' placeholder='\" + \"#= message #\" + \"' title='\" + \"#= message #\" + \"' class='k-input-inner' />\" +\n            \"</span>\"\n        }\n    };\n\n    var TreeView = kendo.Class.extend({\n        init: function(data, options) {\n            var that = this;\n\n            that.data = data || [];\n            that.options = extend(that.options, options);\n        },\n\n        options: {\n            defaultParentId: null,\n            idField: \"id\",\n            parentIdField: PARENTIDFIELD\n        },\n\n        childrenMap: function() {\n            var that = this;\n            var childrenMap = {};\n            var dataLength = that.data.length;\n            var dataItem;\n            var dataItemId;\n            var dataItemParentId;\n            var idField = that.options.idField;\n            var parentIdField = that.options.parentIdField;\n\n            if (that._childrenMap) {\n                return that._childrenMap;\n            }\n\n            for (var i = 0; i < dataLength; i++) {\n                dataItem = this.data[i];\n                dataItemId = dataItem[idField];\n                dataItemParentId = dataItem[parentIdField];\n\n                childrenMap[dataItemId] = childrenMap[dataItemId] || [];\n                childrenMap[dataItemParentId] = childrenMap[dataItemParentId] || [];\n\n                childrenMap[dataItemParentId].push(dataItem);\n            }\n\n            that._childrenMap = childrenMap;\n\n            return childrenMap;\n        },\n\n        idsMap: function() {\n            var that = this;\n            var idsMap = {};\n            var data = that.data;\n            var dataLength = data.length;\n            var dataItem;\n            var idField = that.options.idField;\n\n            if (that._idMap) {\n                return that._idMap;\n            }\n\n            for (var i = 0; i < dataLength; i++) {\n                dataItem = data[i];\n                idsMap[dataItem[idField]] = dataItem;\n            }\n\n            that.idsMap = idsMap;\n            return idsMap;\n        },\n\n        dataMaps: function() {\n            var that = this;\n            var childrenMap = {};\n            var data = that.data;\n            var dataLength = data.length;\n            var idsMap = {};\n            var dataItem;\n            var dataItemId;\n            var dataItemParentId;\n            var idField = that.options.idField;\n            var parentIdField = that.options.parentIdField;\n\n            if (that._dataMaps) {\n                return that._dataMaps;\n            }\n\n            for (var i = 0; i < dataLength; i++) {\n                dataItem = data[i];\n                dataItemId = dataItem[idField];\n                dataItemParentId = dataItem[parentIdField];\n\n                idsMap[dataItemId] = dataItem;\n\n                childrenMap[dataItemId] = childrenMap[dataItemId] || [];\n                childrenMap[dataItemParentId] = childrenMap[dataItemParentId] || [];\n                childrenMap[dataItemParentId].push(dataItem);\n            }\n\n            that._dataMaps = {\n                children: childrenMap,\n                ids: idsMap\n            };\n\n            return that._dataMaps;\n        },\n\n        rootNodes: function() {\n            var that = this;\n            var data = that.data;\n            var defaultParentId = that.options.defaultParentId;\n            var dataLength = data.length;\n            var rootNodes = [];\n            var dataItem;\n            var parentIdField = that.options.parentIdField;\n\n            for (var i = 0; i < dataLength; i++) {\n                dataItem = data[i];\n\n                if (dataItem[parentIdField] === defaultParentId) {\n                    rootNodes.push(dataItem);\n                }\n            }\n\n            return rootNodes;\n        },\n\n        removeCollapsedSubtreesFromRootNodes: function(options) {\n            options = options || {};\n            var that = this;\n            var rootNodes = that.rootNodes();\n            var result = [];\n            var prunedTree;\n\n            that._childrenMap = options.childrenMap = options.childrenMap || that.childrenMap();\n            options.maxDepth = options.maxDepth || Infinity;\n\n            for (var i = 0; i < rootNodes.length; i++) {\n                prunedTree = that.removeCollapsedSubtrees(rootNodes[i], options);\n                result = result.concat(prunedTree);\n            }\n\n            return result;\n        },\n\n        removeCollapsedSubtrees: function(rootNode, options) {\n            options = options || {};\n            var that = this;\n            var result = [];\n            var childIdx;\n            var prunedTree;\n            var childrenMap = options.childrenMap || {};\n            var maxDepth = options.maxDepth || Infinity;\n            var idField = that.options.idField;\n            var children = childrenMap[rootNode[idField]] || [];\n            var expanded = isUndefined(rootNode.expanded) ? options.expanded : rootNode.expanded;\n\n            result.push(rootNode);\n\n            if (children && expanded) {\n                for (childIdx = 0; childIdx < children.length; childIdx++) {\n                    if (result.length >= maxDepth) {\n                        break;\n                    }\n\n                    prunedTree = that.removeCollapsedSubtrees(children[childIdx], options);\n                    result = result.concat(prunedTree);\n                }\n            }\n\n            return result;\n        }\n    });\n\n    var TreeQuery = function(data) {\n        this.data = data || [];\n    };\n\n    TreeQuery.prototype = new Query();\n    TreeQuery.prototype.constructor = TreeQuery;\n\n    TreeQuery.process = function(data, options, inPlace) {\n        options = options || {};\n        var query = new TreeQuery(data);\n        var group = options.group;\n        var sort = Query.normalizeGroup(group || []).concat(Query.normalizeSort(options.sort || []));\n        var filterCallback = options.filterCallback;\n        var filter = options.filter;\n        var skip = options.skip;\n        var take = options.take;\n        var total;\n        var childrenMap;\n        var filteredChildrenMap;\n        var view;\n        var prunedData;\n\n        if (sort && inPlace) {\n            query = query.sort(sort, undefined, undefined, inPlace);\n        }\n\n        if (filter) {\n            query = query.filter(filter);\n\n            if (filterCallback) {\n                query = filterCallback(query);\n            }\n\n            total = query.toArray().length;\n        }\n\n        if (sort && !inPlace) {\n            query = query.sort(sort);\n\n            if (group) {\n                data = query.toArray();\n            }\n        }\n\n        if (options.processFromRootNodes) {\n            view = new TreeView(query.toArray(), options);\n\n            if (filter) {\n                filteredChildrenMap = view.childrenMap();\n            }\n\n            prunedData = view.removeCollapsedSubtreesFromRootNodes({\n                // filtering or sorting requires changes to childrenMap\n                childrenMap: filter || (sort && sort.length) ? undefined : options.childrenMap,\n                expanded: options.expanded,\n                maxDepth: (skip + take) || Infinity\n            });\n\n            childrenMap = view.childrenMap();\n\n            query = new TreeQuery(prunedData);\n        }\n\n        if (skip !== undefined && take !== undefined) {\n            query = query.range(skip, take);\n        }\n\n        if (group) {\n            query = query.group(group, data);\n        }\n\n        return {\n            total: total,\n            data: query.toArray(),\n            childrenMap: childrenMap,\n            filteredChildrenMap: filteredChildrenMap\n        };\n    };\n\n    var TreeListModel = Model.define({\n        id: \"id\",\n\n        parentId: PARENTIDFIELD,\n\n        fields: {\n            id: { type: \"number\" },\n            parentId: { type: \"number\", nullable: true }\n        },\n\n        init: function(value) {\n            Model.fn.init.call(this, value);\n\n            this._loaded = false;\n\n            if (!this.parentIdField) {\n                this.parentIdField = PARENTIDFIELD;\n            }\n\n            this.parentId = this.get(this.parentIdField);\n        },\n\n        accept: function(data) {\n            Model.fn.accept.call(this, data);\n\n            this.parentId = this.get(this.parentIdField);\n        },\n\n        set: function(field, value, initiator) {\n            if (field == PARENTIDFIELD && this.parentIdField != PARENTIDFIELD) {\n                this[this.parentIdField] = value;\n            }\n\n            Model.fn.set.call(this, field, value, initiator);\n\n            if (field == this.parentIdField) {\n                this.parentId = this.get(this.parentIdField);\n            }\n        },\n\n        loaded: function(value) {\n            if (value !== undefined) {\n                this._loaded = value;\n            } else {\n                return this._loaded;\n            }\n        },\n\n        shouldSerialize: function(field) {\n            return Model.fn.shouldSerialize.call(this, field) && field !== \"_loaded\" && field != \"_error\" && field != \"_edit\" && !(this.parentIdField !== \"parentId\" && field === \"parentId\");\n        }\n    });\n\n    TreeListModel.parentIdField = PARENTIDFIELD;\n\n    TreeListModel.define = function(base, options) {\n        if (options === undefined) {\n            options = base;\n            base = TreeListModel;\n        }\n\n        var parentId = options.parentId || PARENTIDFIELD;\n\n        options.parentIdField = parentId;\n\n        var model = Model.define(base, options);\n\n        if (parentId) {\n            model.parentIdField = parentId;\n        }\n\n        return model;\n    };\n\n    function is(field) {\n        return function(object) {\n            return object[field];\n        };\n    }\n\n    function not(func) {\n        return function(object) {\n            return !func(object);\n        };\n    }\n\n    var TreeListDataSource = DataSource.extend({\n        init: function(options) {\n            options = options || {};\n            var that = this;\n            that._dataMaps = that._getDataMaps();\n\n            options.schema = extend(true, {}, {\n                modelBase: TreeListModel,\n                model: TreeListModel\n            }, options.schema);\n\n            DataSource.fn.init.call(this, options);\n        },\n\n        _addRange: function() {\n            // empty override for performance - the treelist does not support virtualization\n        },\n\n        _createNewModel: function(data) {\n            var that = this;\n            var model = {};\n            var fromModel = data instanceof Model;\n            var parentIdField = this._modelParentIdField();\n\n            if (fromModel) {\n                model = data;\n            }\n\n            model = DataSource.fn._createNewModel.call(this, model);\n\n            if (!fromModel) {\n                if (data.parentId) {\n                    data[model.parentIdField] = data.parentId;\n                } else if (that._isPageable() && data[parentIdField]) {\n                    data[model.parentIdField] = data[parentIdField];\n                }\n\n                model.accept(data);\n            }\n\n            return model;\n        },\n\n        _shouldWrap: function() {\n            return true;\n        },\n\n        _push: function(result, operation) {\n            var data = DataSource.fn._readData.call(this, result);\n\n            if (!data) {\n                data = result;\n            }\n\n            this[operation](data);\n        },\n\n        _getData: function() {\n            // do not use .data(), which wraps the data items\n            return this._data || [];\n        },\n\n        _readData: function(newData) {\n            var that = this;\n            var data = that._isPageable() ? that._getData().toJSON() : that.data();\n\n            newData = DataSource.fn._readData.call(this, newData);\n\n            this._replaceData(((data.toJSON ? data.toJSON() : data)).concat(newData), data);\n\n            if (newData instanceof ObservableArray) {\n                return newData;\n            }\n\n            return data;\n        },\n\n        _replaceData: function(source, target) {\n            var sourceLength = source.length;\n\n            for (var i = 0; i < sourceLength; i++) {\n                target[i] = source[i];\n            }\n\n            target.length = sourceLength;\n        },\n\n        _readAggregates: function(data) {\n            var result = extend(this._aggregateResult, this.reader.aggregates(data));\n            if (\"\" in result) {\n                result[this._defaultParentId()] = result[\"\"];\n                delete result[\"\"];\n            }\n\n            return result;\n        },\n\n        read: function(data) {\n            var that = this;\n\n            if (that._isPageable()) {\n                that._dataMaps = {};\n                if (!that._modelOptions().expanded) {\n                    that._skip = 0;\n                    that._page = 1;\n                    that._collapsedTotal = undefined;\n                }\n            }\n\n            return DataSource.fn.read.call(that, data);\n        },\n\n        remove: function(root) {\n            this._removeChildData(root);\n\n            this._removeFromDataMaps(root);\n\n            return DataSource.fn.remove.call(this, root);\n        },\n\n        _removeChildData: function(model, removePristine) {\n            var that = this;\n            var pageable = that._isPageable();\n            var data = pageable ? this._getData() : this.data();\n            var childrenMap = pageable ? that._getChildrenMap() || that.childrenMap(data) : that._childrenMap(data);\n            var items = this._subtree(childrenMap, model.id);\n            var shouldRemovePristine = isUndefined(removePristine) ? false : removePristine;\n\n            var removedItems = this._removeItems(items, shouldRemovePristine);\n\n            that._removeFromDataMaps(removedItems);\n        },\n\n        pushDestroy: function(items) {\n            var that = this;\n\n            if (!isArray(items)) {\n                items = [items];\n            }\n\n            for (var i = 0; i < items.length; i++) {\n                that._removeChildData(items[i], true);\n                that._removeFromDataMaps(items[i]);\n            }\n\n            DataSource.fn.pushDestroy.call(that, items);\n        },\n\n        insert: function(index, model) {\n            var that = this;\n            var newModel = that._createNewModel(model);\n\n            that._insertInDataMaps(newModel);\n\n            return DataSource.fn.insert.call(that, index, newModel);\n        },\n\n        _filterCallback: function(query) {\n            var that = this;\n            var i, item;\n            var map = {};\n            var result = [];\n            var data = query.toArray();\n            var idField = that._modelIdField();\n            var parentIdField = that._modelParentIdField();\n            var pageable = that._isPageable();\n            var parentSubtree = [];\n            var parent;\n\n            for (i = 0; i < data.length; i++) {\n                item = data[i];\n\n                if (pageable) {\n                    // return view from root nodes to child nodes\n                    parentSubtree = [];\n\n                    if (!map[item[idField]]) {\n                        map[item[idField]] = true;\n                        parentSubtree.push(item);\n                    }\n\n                    parent = that._parentNode(item);\n\n                    while (parent) {\n                        if (!map[parent[idField]]) {\n                            map[parent[idField]] = true;\n                            parentSubtree.unshift(parent);\n                            parent = that._parentNode(parent);\n                        } else {\n                            // the parent chain is already processed\n                            break;\n                        }\n                    }\n\n                    if (parentSubtree.length) {\n                        result = result.concat(parentSubtree);\n                    }\n                } else {\n                    while (item) {\n                        if (!map[item[idField]]) {\n                            map[item[idField]] = true;\n                            result.push(item);\n                        }\n\n                        if (!map[item[parentIdField]]) {\n                            map[item[parentIdField]] = true;\n                            item = this.parentNode(item);\n\n                            if (item) {\n                                result.push(item);\n                            }\n                        } else {\n                            break;\n                        }\n                    }\n                }\n            }\n\n            return new Query(result);\n        },\n\n        _subtree: function(map, id) {\n            var that = this;\n            var result = map[id] || [];\n            var defaultParentId = that._defaultParentId();\n            var idField = that._modelIdField();\n\n            for (var i = 0, len = result.length; i < len; i++) {\n                if (result[i][idField] !== defaultParentId) {\n                    result = result.concat(that._subtree(map, result[i][idField]));\n                }\n            }\n\n            return result;\n        },\n\n        // builds hash id -> children\n        _childrenMap: function(data) {\n            var map = {};\n            var i, item, id, parentId;\n\n            data = this._observeView(data);\n\n            for (i = 0; i < data.length; i++) {\n                item = data[i];\n                id = item.id;\n                parentId = item.parentId;\n\n                map[id] = map[id] || [];\n                map[parentId] = map[parentId] || [];\n                map[parentId].push(item);\n            }\n\n            return map;\n        },\n\n        childrenMap: function(data) {\n            var view = this._createTreeView(data);\n            var map = view.childrenMap();\n            return map;\n        },\n\n        _getChildrenMap: function() {\n            var that = this;\n            var dataMaps = that._getDataMaps();\n            return dataMaps.children;\n        },\n\n        _initIdsMap: function(data) {\n            var that = this;\n            var dataMaps = that._getDataMaps();\n\n            if (isUndefined(dataMaps.ids)) {\n                dataMaps.ids = that._idsMap(data);\n            }\n\n            return dataMaps.ids;\n        },\n\n        _idsMap: function(data) {\n            var view = this._createTreeView(data);\n            var map = view.idsMap();\n            return map;\n        },\n\n        _getIdsMap: function() {\n            var that = this;\n            var dataMaps = that._getDataMaps();\n            return dataMaps.ids || {};\n        },\n\n        _getFilteredChildrenMap: function() {\n            var that = this;\n            var dataMaps = that._getDataMaps();\n            return dataMaps.filteredChildren;\n        },\n\n        _setFilteredChildrenMap: function(map) {\n            var that = this;\n            var dataMaps = that._getDataMaps();\n            dataMaps.filteredChildren = map;\n        },\n\n        _initDataMaps: function(data) {\n            var that = this;\n            var view = that._createTreeView(data);\n\n            that._dataMaps = view.dataMaps();\n\n            return that._dataMaps;\n        },\n\n        _initChildrenMapForParent: function(parent) {\n            var that = this;\n            var data = that._getData();\n            var childrenMap = that._getChildrenMap();\n            var idField = that._modelIdField();\n            var parentIdField = that._modelParentIdField();\n            var parentId = (parent || {})[idField];\n\n            if (childrenMap && parent) {\n                childrenMap[parentId] = [];\n\n                for (var i = 0; i < data.length; i++) {\n                    if (data[i][parentIdField] === parentId) {\n                        childrenMap[parentId].push(data[i]);\n                    }\n                }\n            }\n        },\n\n        _getDataMaps: function() {\n            var that = this;\n            that._dataMaps = that._dataMaps || {};\n            return that._dataMaps;\n        },\n\n        _createTreeView: function(data, options) {\n            var view = new TreeView(data, extend(options, this._defaultTreeModelOptions()));\n            return view;\n        },\n\n        _defaultTreeModelOptions: function() {\n            var that = this;\n            var modelOptions = that._modelOptions();\n\n            return {\n                defaultParentId: that._defaultParentId(),\n                idField: that._modelIdField(),\n                parentIdField: that._modelParentIdField(),\n                expanded: modelOptions.expanded\n            };\n        },\n\n        _defaultDataItemType: function() {\n            return this.reader.model || kendo.data.ObservableObject;\n        },\n\n        _calculateAggregates: function(data, options) {\n            options = options || {};\n            var that = this;\n            var result = {};\n            var item, subtree, i;\n            var filter = options.filter;\n            var skip = options.skip;\n            var take = options.take;\n            var maxDepth = !isUndefined(skip) && !isUndefined(take) ? (skip + take) : Infinity;\n            var pageable = that._isPageable();\n            var filteredChildrenMap = options.filteredChildrenMap;\n            var childrenMap = options.childrenMap;\n            var pageableChildrenMap;\n\n            if (pageable) {\n                if (isUndefined(options.aggregate)) {\n                    return result;\n                }\n\n                if (filteredChildrenMap) {\n                    pageableChildrenMap = filteredChildrenMap;\n                } else if (childrenMap) {\n                    pageableChildrenMap = childrenMap;\n                } else {\n                    pageableChildrenMap = that.childrenMap(that._getData());\n                }\n            }\n\n            if (!pageable && filter) {\n                data = Query.process(data, {\n                    filter: filter,\n                    filterCallback: this._filterCallback.bind(this)\n                }).data;\n            }\n\n            var map = pageable ? pageableChildrenMap : that._childrenMap(data);\n\n            // calculate aggregates for each subtree\n            result[this._defaultParentId()] = new Query(this._subtree(map, this._defaultParentId())).aggregate(options.aggregate);\n\n            for (i = 0; i < data.length; i++) {\n                if (i >= maxDepth) {\n                    break;\n                }\n\n                item = data[i];\n                subtree = this._subtree(map, item.id);\n\n                result[item.id] = new Query(subtree).aggregate(options.aggregate);\n            }\n\n            return result;\n        },\n\n        _queryProcess: function(data, options) {\n            var that = this;\n            var result = {};\n            options = options || {};\n            options.filterCallback = this._filterCallback.bind(this);\n\n            if (that._isPageable()) {\n                return that._processPageableQuery(data, options);\n            } else {\n                var defaultParentId = this._defaultParentId();\n                result = Query.process(data, options);\n                var map = this._childrenMap(result.data);\n                var hasLoadedChildren, i, item, children;\n\n                data = map[defaultParentId] || [];\n\n                for (i = 0; i < data.length; i++) {\n                    item = data[i];\n\n                    if (item.id === defaultParentId) {\n                        continue;\n                    }\n\n                    children = map[item.id];\n                    hasLoadedChildren = !!(children && children.length);\n\n                    if (!item.loaded()) {\n                        item.loaded(hasLoadedChildren || !item.hasChildren);\n                    }\n\n                    if (item.loaded() || item.hasChildren !== true) {\n                        item.hasChildren = hasLoadedChildren;\n                    }\n\n                    if (hasLoadedChildren) {\n                        //cannot use splice due to IE8 bug\n                        data = data.slice(0, i + 1).concat(children, data.slice(i + 1));\n                    }\n                }\n\n                result.data = data;\n            }\n\n            return result;\n        },\n\n        _processPageableQuery: function(data, options) {\n            var that = this;\n            var dataMaps = that._getDataMaps();\n            var result;\n            var filteredChildrenMap;\n\n            if (that._getData() !== data || !dataMaps.children || !dataMaps.ids) {\n                dataMaps = that._initDataMaps(that._getData());\n            }\n\n            options.childrenMap = dataMaps.children || {};\n            options.idsMap = dataMaps.ids || {};\n\n            result = that._processTreeQuery(data, options);\n\n            that._replaceWithObservedData(result.data, data);\n\n            that._processDataItemsState(result.data, result.childrenMap);\n\n            that._replaceItemsInDataMaps(result.data);\n\n            result.dataToAggregate = that._dataToAggregate(result.data, options);\n\n            if (options.filter || that.filter()) {\n                filteredChildrenMap = result.filteredChildrenMap;\n                that._replaceInMapWithObservedData(filteredChildrenMap, data);\n                that._setFilteredChildrenMap(filteredChildrenMap);\n                options.filteredChildrenMap = filteredChildrenMap;\n                that._calculateCollapsedTotal(result.data);\n            } else {\n                that._collapsedTotal = undefined;\n            }\n\n            return result;\n        },\n\n        _dataToAggregate: function(data) {\n            var that = this;\n            var firstDataItem = data[0] || {};\n            var firstItemParents = that._parentNodes(firstDataItem);\n            var dataToAggregate = firstItemParents.concat(data);\n\n            return dataToAggregate;\n        },\n\n        _replaceItemsInDataMaps: function(observableArray) {\n            var that = this;\n            var view = isArray(observableArray) ? observableArray : [observableArray];\n            var itemType = that._defaultDataItemType();\n            var defaultParentId = that._defaultParentId();\n            var idField = that._modelIdField();\n            var parentIdField = that._modelParentIdField();\n            var dataMaps = that._getDataMaps();\n            var item;\n            var parents;\n            var directParent;\n\n            for (var viewIndex = 0; viewIndex < view.length; viewIndex++) {\n                item = view[viewIndex];\n\n                if (!(item instanceof itemType)) {\n                    continue;\n                }\n\n                that._insertInIdsMap(item);\n\n                parents = that._parentNodes(item);\n                directParent = parents && parents.length ? parents[parents.length - 1] : undefined;\n\n                if (item[parentIdField] === defaultParentId) {\n                    that._replaceInMap(dataMaps.children, defaultParentId, item, itemType);\n                } else if (directParent) {\n                    that._replaceInMap(dataMaps.children, directParent[idField], item, itemType);\n                }\n            }\n        },\n\n        _replaceInMap: function(map, id, replacement, itemType) {\n            var idField = this._modelIdField();\n            map[id] = map[id] || [];\n            itemType = itemType || this._defaultDataItemType();\n\n            var itemInArray = map[id].filter(function(element) {\n                return replacement[idField] === element[idField];\n            })[0];\n\n            var itemIndex = itemInArray ? map[id].indexOf(itemInArray) : -1;\n\n            if (itemIndex !== -1 && !(itemInArray instanceof itemType)) {\n                map[id][itemIndex] = replacement;\n            }\n        },\n\n        _replaceWithObservedData: function(dataToReplace, replacementArray) {\n            var that = this;\n            var idsMap = that._getDataMaps().ids || {};\n            var idField = that._modelIdField();\n            var itemType = that._defaultDataItemType();\n            var itemToReplace;\n            var itemToReplaceId;\n            var dataItem;\n            var dataItemIndex;\n            var observableItem;\n\n            for (var i = 0; i < dataToReplace.length; i++) {\n                itemToReplace = dataToReplace[i];\n                itemToReplaceId = itemToReplace[idField];\n\n                if (!(itemToReplace instanceof itemType)) {\n                    if (!(idsMap[itemToReplaceId] instanceof itemType)) {\n                        dataItem = that._getById(itemToReplaceId);\n                        dataItemIndex = replacementArray.indexOf(dataItem);\n\n                        if (dataItem && dataItemIndex !== -1) {\n                            observableItem = replacementArray.at(dataItemIndex);\n                            dataToReplace[i] = observableItem;\n                        }\n                    } else {\n                        dataToReplace[i] = idsMap[itemToReplaceId];\n                    }\n                }\n            }\n        },\n\n        _replaceInMapWithObservedData: function(map, replacementArray) {\n            var that = this;\n\n            for (var key in map) {\n                that._replaceWithObservedData(map[key], replacementArray);\n            }\n        },\n\n        _insertInDataMaps: function(item) {\n            var that = this;\n\n            if (that._isPageable()) {\n                that._insertInIdsMap(item);\n                that._insertInChildrenMap(item);\n            }\n        },\n\n        _insertInIdsMap: function(item) {\n            var that = this;\n            var idsMap = that._getIdsMap();\n            var idField = that._modelIdField();\n\n            if (!isUndefined(item[idField])) {\n                idsMap[item[idField]] = item;\n            }\n        },\n\n        _insertInChildrenMap: function(item, index) {\n            var that = this;\n            var childrenMap = that._getChildrenMap() || {};\n            var idField = that._modelIdField();\n            var parentIdField = that._modelParentIdField();\n            var itemId = item[idField];\n            var parentId = item[parentIdField];\n            index = index || 0;\n\n            childrenMap[itemId] = childrenMap[itemId] || [];\n            childrenMap[parentId] = childrenMap[parentId] || [];\n            childrenMap[parentId].splice(index, 0, item);\n        },\n\n        _removeFromDataMaps: function(items) {\n            var that = this;\n            items = isArray(items) ? items : [items];\n\n            if (that._isPageable()) {\n                for (var i = 0; i < items.length; i++) {\n                    that._removeFromIdsMap(items[i]);\n                    that._removeFromChildrenMap(items[i]);\n                }\n            }\n        },\n\n        _removeFromIdsMap: function(item) {\n            var that = this;\n            var idsMap = that._getIdsMap();\n            var idField = that._modelIdField();\n\n            if (!isUndefined(item[idField])) {\n                idsMap[item[idField]] = undefined;\n            }\n        },\n\n        _removeFromChildrenMap: function(item) {\n            var that = this;\n            var childrenMap = that._getChildrenMap() || {};\n            var parentIdField = that._modelParentIdField();\n            var parentId = item[parentIdField];\n\n            childrenMap[parentId] = childrenMap[parentId] || [];\n\n            var itemIndex = that._indexInChildrenMap(item);\n\n            if (itemIndex !== -1) {\n                childrenMap[parentId].splice(itemIndex, 1);\n            }\n        },\n\n        _indexInChildrenMap: function(item) {\n            var that = this;\n            return that._itemIndexInMap(item, that._getChildrenMap());\n        },\n\n        _itemIndexInMap: function(item, dataMap) {\n            var that = this;\n            var map = dataMap || {};\n            var parentIdField = that._modelParentIdField();\n            var parentId = item[parentIdField];\n\n            map[parentId] = map[parentId] || [];\n\n            var itemInArray = map[parentId].filter(function(element) {\n                return item.uid === element.uid;\n            })[0];\n\n            var itemIndex = itemInArray ? map[parentId].indexOf(itemInArray) : -1;\n\n            return itemIndex;\n        },\n\n        _getById: function(id) {\n            var that = this;\n            var idField = that._modelIdField();\n            var data = that._getData();\n\n            for (var i = 0; i < data.length; i++) {\n                if (data[i][idField] === id) {\n                    return data[i];\n                }\n            }\n        },\n\n        _isLastItemInView: function(dataItem) {\n            var view = this.view();\n            return view.length && view[view.length - 1] === dataItem;\n        },\n\n        _defaultPageableQueryOptions: function() {\n            var that = this;\n            var dataMaps = that._getDataMaps();\n            var options = {\n                skip: that.skip(),\n                take: that.take(),\n                page: that.page(),\n                pageSize: that.pageSize(),\n                sort: that.sort(),\n                filter: that.filter(),\n                group: that.group(),\n                aggregate: that.aggregate(),\n                filterCallback: that._filterCallback.bind(that),\n                childrenMap: dataMaps.children,\n                idsMap: dataMaps.ids\n            };\n\n            return options;\n        },\n\n        _isPageable: function() {\n            var pageSize = this.pageSize();\n            return (!isUndefined(pageSize) && pageSize > 0 && !this.options.serverPaging);\n        },\n\n        _updateTotalForAction: function(action, items) {\n            var that = this;\n\n            DataSource.fn._updateTotalForAction.call(that, action, items);\n\n            if (that._isPageable()) {\n                that._updateCollapsedTotalForAction(action, items);\n            }\n        },\n\n        _updateCollapsedTotalForAction: function(action, items) {\n            var that = this;\n            var total = parseInt(that._collapsedTotal, 10);\n\n            if (!isNumber(that._collapsedTotal)) {\n                that._calculateCollapsedTotal();\n                return;\n            }\n\n            if (action === \"add\") {\n                total += items.length;\n            } else if (action === \"remove\") {\n                total -= items.length;\n            } else if (action !== \"itemchange\" && action !== \"sync\" && !that.options.serverPaging) {\n                total = that._calculateCollapsedTotal();\n            } else if (action === \"sync\") {\n                total = that._calculateCollapsedTotal();\n            }\n\n            that._collapsedTotal = total;\n        },\n\n        _setFilterTotal: function(filterTotal, setDefaultValue) {\n            var that = this;\n\n            DataSource.fn._setFilterTotal.call(that, filterTotal, setDefaultValue);\n\n        },\n\n        collapsedTotal: function() {\n            var that = this;\n\n            if (!isUndefined(that._collapsedTotal)) {\n                return that._collapsedTotal;\n            }\n\n            return that._calculateCollapsedTotal();\n        },\n\n        _calculateCollapsedTotal: function(filteredData) {\n            var that = this;\n            var data = that._dataWithoutCollapsedSubtrees(filteredData);//\n\n            if (data.length) {\n                that._collapsedTotal = data.length;\n            }\n\n            return that._collapsedTotal;\n        },\n\n        _dataWithoutCollapsedSubtrees: function(filteredData) {\n            return this._removeCollapsedSubtrees(filteredData || this._getData());\n        },\n\n        _removeCollapsedSubtrees: function(data) {\n            var that = this;\n            var view = that._createTreeView(data);\n            var result = view.removeCollapsedSubtreesFromRootNodes({\n                expanded: that._modelOptions().expanded,\n                childrenMap: that.filter() ? that._getFilteredChildrenMap() : that._getChildrenMap()\n            });\n\n            return result;\n        },\n\n        _processTreeQuery: function(data, options) {\n            var result = TreeQuery.process(data, extend(options, this._defaultTreeModelOptions(), {\n                processFromRootNodes: true\n            }));\n\n            return result;\n        },\n\n        _processDataItemsState: function(data, childrenMap) {\n            var dataLength = data.length;\n            var i;\n\n            for (i = 0; i < dataLength; i++) {\n                this._processDataItemState(data[i], childrenMap);\n            }\n        },\n\n        _processDataItemState: function(dataItem, childrenMap) {\n            var defaultParentId = this._defaultParentId();\n\n            if (dataItem.id === defaultParentId) {\n                return;\n            }\n\n            var children = childrenMap[dataItem.id] || [];\n            var hasLoadedChildren = !!(children && children.length);\n\n            if (!dataItem.loaded) {\n                return;\n            }\n\n            if (!dataItem.loaded()) {\n                dataItem.loaded(hasLoadedChildren || !dataItem.hasChildren);\n            }\n\n            if (dataItem.loaded() || dataItem.hasChildren !== true) {\n                dataItem.hasChildren = hasLoadedChildren;\n            }\n        },\n\n        _queueRequest: function(options, callback) {\n            // allow simultaneous requests (loading multiple items at the same time)\n            callback.call(this);\n        },\n\n        _modelLoaded: function(id) {\n            var model = this.get(id);\n            model.loaded(true);\n            model.hasChildren = this.childNodes(model).length > 0;\n        },\n\n        _modelError: function(id, e) {\n            this.get(id)._error = e;\n        },\n\n        success: function(data, requestParams) {\n            if (!requestParams || typeof requestParams.id == \"undefined\") {\n                this._data = this._observe([]);\n            }\n\n            DataSource.fn.success.call(this, data, requestParams);\n\t\t\tthis._total = this._data.length;\n        },\n\n        load: function(model) {\n            var method = \"_query\";\n            var remote = this.options.serverSorting || this.options.serverPaging || this.options.serverFiltering || this.options.serverGrouping || this.options.serverAggregates;\n            var defaultPromise = $.Deferred().resolve().promise();\n\n            if (model.loaded()) {\n                if (remote) {\n                    return defaultPromise;\n                }\n            } else if (model.hasChildren) {\n                method = \"read\";\n                this._removeChildData(model);\n            }\n\n            return this[method]({ id: model.id })\n                .done(this._modelLoaded.bind(this, model.id))\n                .fail(this._modelError.bind(this, model.id));\n        },\n\n        contains: function(root, child) {\n            var that = this;\n            var idField = that._modelIdField();\n            var parentIdField = that._modelParentIdField();\n            var rootId = root[idField];\n            var pageable = that._isPageable();\n\n            while (child) {\n                if (child[parentIdField] === rootId) {\n                    return true;\n                }\n\n                child = pageable ? that._parentNode(child) : that.parentNode(child);\n            }\n\n            return false;\n        },\n\n        _byParentId: function(id, defaultId) {\n            var result = [];\n            var view = this.view();\n            var current;\n\n            if (id === defaultId) {\n                return [];\n            }\n\n            for (var i = 0; i < view.length; i++) {\n                current = view.at(i);\n\n                if (current.parentId == id) {\n                    result.push(current);\n                }\n            }\n\n            return result;\n        },\n\n        _defaultParentId: function() {\n            return this.reader.model.fn.defaults[this.reader.model.parentIdField];\n        },\n\n        _modelOptions: function() {\n            var modelOptions = ((this.options.schema || {}).model || {});\n            return modelOptions;\n        },\n\n        _modelIdField: function() {\n            var modelOptions = this._modelOptions();\n            return modelOptions.id || \"id\";\n        },\n\n        _modelParentIdField: function() {\n            var modelOptions = this._modelOptions();\n            return modelOptions.parentId || PARENTIDFIELD;\n        },\n\n        childNodes: function(model) {\n            return this._byParentId(model.id, this._defaultParentId());\n        },\n\n        allChildNodes: function(model, result) {\n            var directChildren = this.data().filter(function(item) {\n                return item.parentId === model.id;\n            });\n\n            for (var i = 0; i < directChildren.length; i++) {\n                result.push(directChildren[i]);\n                this.allChildNodes(directChildren[i], result);\n            }\n        },\n\n        rootNodes: function() {\n            return this._byParentId(this._defaultParentId());\n        },\n\n        _rootNode: function(child) {\n            return this._parentNodes(child)[0];\n        },\n\n        _pageableRootNodes: function(options) {\n            options = options || {};\n            var that = this;\n            var defaultParentId = that._defaultParentId();\n            var parentIdField = that._modelParentIdField();\n            var result = [];\n            var nodesWithoutParentInView = that._nodesWithoutParentInView(options);\n            var node;\n            var root;\n\n            for (var i = 0; i < nodesWithoutParentInView.length; i++) {\n                node = nodesWithoutParentInView[i];\n\n                if (node[parentIdField] === defaultParentId) {\n                    result.push(node);\n                } else {\n                    root = that._rootNode(node);\n\n                    if (root && result.indexOf(root) === -1) {\n                        result.push(root);\n                    }\n                }\n            }\n\n            return result;\n        },\n\n        parentNode: function(model) {\n            return this.get(model.parentId);\n        },\n\n        _parentNode: function(child) {\n            var that = this;\n            var parentIdField = that._modelParentIdField();\n            var idsMap = that._initIdsMap(that._getData());\n            var parentId = child[parentIdField];\n            var parent = idsMap[parentId] || that._getById(parentId);\n\n            return parent;\n        },\n\n        _parentNodes: function(child) {\n            var that = this;\n            var parent = that._parentNode(child);\n            var parents = [];\n\n            while (parent) {\n                parents.unshift(parent);\n                parent = that._parentNode(parent);\n            }\n\n            return parents;\n        },\n\n        _parentNodesNotInView: function() {\n            var that = this;\n            var view = that.view();\n            var result = [];\n            var defaultParentId = that._defaultParentId();\n            var idField = that._modelIdField();\n            var parentIdField = that._modelParentIdField();\n            var parentInView;\n            var parents = [];\n            var directParent;\n            var dataItem;\n            var dataItemId;\n            var dataItemParentId;\n\n            for (var i = 0; i < view.length; i++) {\n                dataItem = view[i];\n                dataItemId = dataItem[idField];\n                dataItemParentId = dataItem[parentIdField];\n                parentInView = that._parentInView(dataItemParentId);\n\n                if (!parentInView && dataItemParentId !== defaultParentId) {\n                    parents = that._parentNodes(dataItem);\n\n                    directParent = parents && parents.length ? parents[parents.length - 1] : that._getById(dataItemParentId);\n\n                    if (directParent && result.indexOf(directParent) === -1) {\n                        result.push(directParent);\n                    }\n                }\n            }\n\n            return result;\n        },\n\n        _nodesWithoutParentInView: function(options) {\n            options = options || {};\n            var that = this;\n            var view = that.view();\n            var childrenMap = options.childrenMap || that.childrenMap(that._getData());\n            var idField = that._modelIdField();\n            var parentIdField = that._modelParentIdField();\n            var dataItem;\n            var parentInView;\n            var children = [];\n            var result = [];\n\n            for (var i = 0; i < view.length; i++) {\n                dataItem = view[i];\n                children = childrenMap[dataItem[idField]];\n                parentInView = that._parentInView(dataItem[parentIdField]);\n\n                if (!parentInView) {\n                    result.push(dataItem);\n                }\n            }\n\n            return result;\n        },\n\n        _parentInView: function(parentId) {\n            var view = this.view();\n\n            for (var i = 0; i < view.length; i++) {\n                if (view[i].id === parentId) {\n                    return view[i];\n                }\n            }\n        },\n\n        level: function(model) {\n            var result = -1;\n\n            if (!(model instanceof TreeListModel)) {\n                model = this.get(model);\n            }\n\n            do {\n                model = this.parentNode(model);\n                result++;\n            } while (model);\n\n            return result;\n        },\n\n        _pageableModelLevel: function(model) {\n            var that = this;\n\n            if (!model || !that._isPageable()) {\n                return 0;\n            }\n\n            var parents = that._parentNodes(model);\n\n            return parents.length;\n        },\n\n        filter: function(value) {\n            var baseFilter = DataSource.fn.filter;\n\n            if (value === undefined) {\n                return baseFilter.call(this, value);\n            }\n\n            baseFilter.call(this, value);\n        },\n\n        _pageableQueryOptions: function(options) {\n            var dataMaps = this._getDataMaps();\n\n            options.childrenMap = dataMaps.children;\n            options.idsMap = dataMaps.ids;\n\n            return options;\n        },\n\n        _flatData: function(data, skip) {\n            skip = this._isPageable() ? true : skip;\n            return DataSource.fn._flatData.call(this, data, skip);\n        },\n\n        data: function(data) {\n            var that = this;\n            var result = DataSource.fn.data.call(that, data);\n\n            if (that._isPageable()) {\n                that._initDataMaps(that._getData());\n                that._calculateCollapsedTotal();\n            }\n\n            return result;\n        },\n\n        cancelChanges: function(model) {\n            var that = this;\n\n            DataSource.fn.cancelChanges.call(that, model);\n\n            that._restorePageSizeAfterAddChild();\n        },\n\n        _modelCanceled: function(model) {\n            var that = this;\n\n            if (that._isPageable()) {\n                that._removeFromDataMaps(model);\n            }\n        },\n\n        _changesCanceled: function() {\n            var that = this;\n\n            if (that._isPageable()) {\n                that._initDataMaps(that._getData());\n            }\n        },\n\n        _setAddChildPageSize: function() {\n            var that = this;\n            var queryOptions = {};\n\n            if (that._isPageable()) {\n                // increase the page size to make the new item visible in view\n                that._addChildPageSize = that.pageSize() + 1;\n\n                queryOptions = that._defaultPageableQueryOptions();\n                queryOptions.take = that._addChildPageSize;\n                queryOptions.pageSize = that._addChildPageSize;\n                that._query(queryOptions);\n            }\n        },\n\n        _restorePageSizeAfterAddChild: function() {\n            var that = this;\n            var queryOptions = {};\n\n            if (that._isPageable()) {\n                if (!isUndefined(that._addChildPageSize)) {\n                    queryOptions = that._defaultPageableQueryOptions();\n                    queryOptions.take = that._addChildPageSize - 1;\n                    queryOptions.pageSize = that._addChildPageSize - 1;\n                    that._query(queryOptions);\n                }\n            }\n\n            that._addChildPageSize = undefined;\n        },\n\n        sync: function() {\n            var that = this;\n\n            return DataSource.fn.sync.call(that)\n                .then(function() {\n                    that._restorePageSizeAfterAddChild();\n                });\n        },\n\n        _syncEnd: function() {\n            var that = this;\n\n            if (that._isPageable()) {\n                that._initDataMaps(that._getData());\n            }\n        }\n    });\n\n    TreeListDataSource.create = function(options) {\n        if (Array.isArray(options)) {\n            options = { data: options };\n        } else if (options instanceof ObservableArray) {\n            options = { data: options.toJSON() };\n        }\n\n        return options instanceof TreeListDataSource ? options : new TreeListDataSource(options);\n    };\n\n    function isCellVisible() {\n        return this.style.display !== \"none\";\n    }\n\n    function sortCells(cells) {\n        var indexAttr = kendo.attr(\"index\");\n        return cells.sort(function(a, b) {\n            a = $(a);\n            b = $(b);\n\n            var indexA = a.attr(indexAttr);\n            var indexB = b.attr(indexAttr);\n\n            if (indexA === undefined) {\n                indexA = $(a).index();\n            }\n            if (indexB === undefined) {\n                indexB = $(b).index();\n            }\n\n            indexA = parseInt(indexA, 10);\n            indexB = parseInt(indexB, 10);\n            return indexA > indexB ? 1 : (indexA < indexB ? -1 : 0);\n        });\n    }\n\n    function leafDataCells(container) {\n        var rows = container.find(\">tr:not(.k-filter-row)\");\n\n        var filter = function() {\n            var el = $(this);\n            return !el.hasClass(\"k-group-cell\") && !el.hasClass(\"k-hierarchy-cell\");\n        };\n\n        var cells = $();\n        if (rows.length > 1) {\n            cells = rows.find(\"th[data-index]\")\n                .filter(filter);\n        }\n\n        cells = cells.add(rows.last().find(\"th\").filter(filter));\n\n        return sortCells(cells);\n    }\n\n    function createPlaceholders(options) {\n        var spans = [];\n        var className = options.className;\n\n        for (var i = 0, level = options.level; i < level; i++) {\n            spans.push(kendoDomElement(\"span\", { className: className }));\n        }\n\n        return spans;\n    }\n\n    function columnsWidth(cols) {\n        var colWidth, width = 0;\n\n        for (var idx = 0, length = cols.length; idx < length; idx++) {\n            colWidth = cols[idx].style.width;\n            if (colWidth && colWidth.indexOf(\"%\") == -1) {\n                width += parseInt(colWidth, 10);\n            }\n        }\n\n        return width;\n    }\n\n    function syncTableHeight(table1, table2) {\n       table1 = table1[0];\n       table2 = table2[0];\n\n       if (table1.rows.length && table2.rows.length && table1.rows.length !== table2.rows.length) {\n           var lockedHeigth = table1.offsetHeight;\n           var tableHeigth = table2.offsetHeight;\n\n           var row;\n           var diff;\n           if (lockedHeigth > tableHeigth) {\n               row = table2.rows[table2.rows.length - 1];\n\n               if (filterRowRegExp.test(row.className)) {\n                   row = table2.rows[table2.rows.length - 2];\n               }\n\n               diff = lockedHeigth - tableHeigth;\n           } else {\n               row = table1.rows[table1.rows.length - 1];\n\n                if (filterRowRegExp.test(row.className)) {\n                    row = table1.rows[table1.rows.length - 2];\n                }\n\n               diff = tableHeigth - lockedHeigth;\n           }\n           row.style.height = row.offsetHeight + diff + \"px\";\n       }\n    }\n\n    var TreeListPager = ui.Pager.extend({\n        options: {\n            name: \"TreeListPager\"\n        },\n\n        totalPages: function() {\n            var that = this;\n            var dataSource = that.dataSource;\n\n            if (dataSource && dataSource._filter) {\n                return ui.Pager.fn.totalPages.call(that);\n            }\n\n            return Math.ceil((that._collapsedTotal() || 0) / (that.pageSize() || 1));\n        },\n\n        _createDataSource: function(options) {\n            this.dataSource = kendo.data.TreeListDataSource.create(options.dataSource);\n        },\n\n        _collapsedTotal: function() {\n            var dataSource = this.dataSource;\n            return dataSource ? (dataSource.collapsedTotal() || 0) : 0;\n        }\n    });\n\n    var Editor = kendo.Observable.extend({\n        init: function(element, options) {\n            kendo.Observable.fn.init.call(this);\n\n            options = this.options = extend(true, {}, this.options, options);\n\n            this.element = element;\n\n            this.bind(this.events, options);\n\n            this.model = this.options.model;\n\n            this.fields = this._fields(this.options.columns);\n\n            this._initContainer();\n\n            this.createEditable();\n        },\n\n        options: {\n            renderForm: false\n        },\n\n        events: [],\n\n        _initContainer: function() {\n            this.wrapper = this.element;\n        },\n\n        createEditable: function() {\n            var options = this.options;\n\n            if (options.renderForm) {\n                this.form = new ui.Form(this.wrapper.find(\".k-treelist-form\"), {\n                    items: this.fields,\n                    buttonsTemplate: \"\",\n                    formData: this.model,\n                    change: options.change\n                });\n\n                this.editable = this.form.editable;\n            } else {\n                this.editable = new ui.Editable(this.wrapper, {\n                    fields: this.fields,\n                    target: options.target,\n                    clearContainer: options.clearContainer,\n                    model: this.model,\n                    change: options.change\n                });\n            }\n        },\n\n        _isEditable: function(column) {\n            return isColumnEditable(column, this.model);\n        },\n\n        _fields: function(columns) {\n            var fields = [];\n            var idx, length, column;\n\n            for (idx = 0, length = columns.length; idx < length; idx++) {\n                column = columns[idx];\n\n                if (this._isEditable(column)) {\n                    fields.push({\n                        field: column.field,\n                        format: column.format,\n                        editor: column.editor,\n                        editorOptions: extend(true, { format: column.format }, column.editorOptions),\n                        label: column.title || column.field || \"\"\n                    });\n                }\n            }\n\n            return fields;\n        },\n\n        end: function() {\n            return this.editable.end();\n        },\n\n        close: function() {\n            this.destroy();\n        },\n\n        destroy: function() {\n            this.editable.destroy();\n            this.editable.element\n                .find(\"[\" + kendo.attr(\"container-for\") + \"]\")\n                .empty()\n                .end()\n                .removeAttr(kendo.attr(\"role\"));\n\n            this.model = this.wrapper = this.element = this.columns = this.editable = null;\n        }\n    });\n\n    var PopupEditor = Editor.extend({\n        init: function(element, options) {\n            Editor.fn.init.call(this, element, options);\n\n            this._attachHandlers();\n            kendo.cycleForm(this.wrapper);\n\n            this.open();\n        },\n\n        events: [\n            CANCEL,\n            SAVE\n        ],\n\n        options: {\n            window: {\n                modal: true,\n                resizable: false,\n                draggable: true,\n                title: \"Edit\",\n                visible: false\n            }\n        },\n\n        _initContainer: function() {\n            var options = this.options;\n            var formContent = [];\n\n            this.wrapper = $('<div class=\"k-popup-edit-form\"/>')\n                .attr(kendo.attr(\"uid\"), this.model.uid)\n                .append('<div class=\"k-edit-form-container\"/>');\n\n            if (options.template) {\n                this._appendTemplate(formContent);\n                this.fields = [];\n            } else {\n                this.options.renderForm = true;\n                formContent.push(kendoHtmlElement('<div class=\"k-treelist-form\"></div>'));\n            }\n            this._appendButtons(formContent);\n\n            new kendoDom.Tree(this.wrapper.children()[0]).render(formContent);\n\n            this.wrapper.appendTo(options.appendTo);\n\n            this.window = new ui.Window(this.wrapper, options.window);\n        },\n\n        _appendTemplate: function(form) {\n            var template = this.options.template;\n\n            if (typeof template === STRING) {\n                template = kendo.unescape(template);\n            }\n\n            template = kendo.template(template)(this.model);\n\n            form.push(kendoHtmlElement(template));\n        },\n\n        _appendButtons: function(form) {\n            form.push(kendoDomElement(\"div\", {\n                \"class\": \"k-edit-buttons\"\n            }, this.options.commandRenderer()));\n        },\n\n        _attachHandlers: function() {\n            var closeHandler = this._cancelProxy = this._cancel.bind(this);\n            this.wrapper.on(CLICK + NS, \".k-grid-cancel\", this._cancelProxy);\n\n            this._saveProxy = this._save.bind(this);\n            this.wrapper.on(CLICK + NS, \".k-grid-update\", this._saveProxy);\n\n            this.window.bind(\"close\", function(e) {\n                if (e.userTriggered) {\n                    closeHandler(e);\n                }\n            });\n        },\n\n        _detachHandlers: function() {\n            this._cancelProxy = null;\n            this._saveProxy = null;\n            this.wrapper.off(NS);\n        },\n\n        _cancel: function(e) {\n            this.trigger(CANCEL, e);\n        },\n\n        _save: function() {\n            this.trigger(SAVE);\n        },\n\n        open: function() {\n            this.window.center().open();\n        },\n\n        close: function() {\n            this.window.bind(\"deactivate\", this.destroy.bind(this)).close();\n        },\n\n        destroy: function() {\n            if (this.form) {\n                this.form.destroy();\n            }\n\n            this.window.destroy();\n            this.window = null;\n            this._detachHandlers();\n\n            Editor.fn.destroy.call(this);\n        }\n    });\n\n    var IncellEditor = Editor.extend({\n        destroy: function() {\n            var that = this;\n\n            that.editable.destroy();\n\n            that.editable.element\n                .off()\n                .empty()\n                .removeAttr(kendo.attr(\"role\"));\n\n            that.model = that.wrapper = that.element = that.columns = that.editable = null;\n        }\n    });\n\n    var TreeList = DataBoundWidget.extend({\n        init: function(element, options, events) {\n            DataBoundWidget.fn.init.call(this, element, options);\n\n            if (events) {\n                this._events = events;\n            }\n\n            isRtl = kendo.support.isRtl(element);\n            this._dataSource(this.options.dataSource);\n            this._aria();\n            this._columns();\n            this._layout();\n            this._navigatable();\n            this._selectable();\n            this._sortable();\n            this._resizable();\n            this._filterable();\n            this._filterRow();\n            this._attachEvents();\n            this._toolbar();\n            this._scrollable();\n            this._reorderable();\n            this._columnMenu();\n            this._minScreenSupport();\n            this._draggable();\n            this._pageable();\n\n            if (this.options.autoBind) {\n                this.dataSource.fetch();\n            }\n\n            if (this._hasLockedColumns) {\n                var widget = this;\n                this.wrapper.addClass(\"k-grid-lockedcolumns\");\n                this._resizeHandler = function() { widget.resize(); };\n                $(window).on(\"resize\" + NS, this._resizeHandler);\n            }\n\n            kendo.notify(this);\n        },\n\n        _draggable: function() {\n            var that = this;\n            var editable = this.options.editable;\n            var dataSource = that.dataSource;\n            var idField = dataSource._modelIdField();\n            var parentIdField = dataSource._modelParentIdField();\n            var pageable = that._isPageable();\n            var reorderable;\n\n            if (!editable || !editable.move) {\n                return;\n            }\n\n            reorderable = editable.move.reorderable;\n\n            this._dragging = new kendo.ui.HierarchicalDragAndDrop(this.wrapper, {\n                $angular: this.$angular,\n                autoScroll: true,\n                holdToDrag: touchDevice,\n                filter: \"tbody>tr\",\n                itemSelector: \"tr\",\n                allowedContainers: this.wrapper,\n                hintText: function(row) {\n                    var text = function() { return $(this).text(); };\n                    var separator = \"<span class='k-drag-separator'></span>\";\n                    return row.children(\"td\").map(text).toArray().join(separator);\n                },\n                contains: (function(source, destination) {\n                    var dest = this.dataItem(destination);\n                    var src = this.dataItem(source);\n\n                    return src == dest || this.dataSource.contains(src, dest);\n                }).bind(this),\n                itemFromTarget: function(target) {\n                    var tr = target.closest(\"tr\");\n                    var prevRow = tr.prev();\n                    var nextRow = tr.next();\n                    var first;\n                    var last;\n\n                    if (prevRow) {\n                        first = !that.sameLevel(prevRow, tr);\n                    }\n\n                    if (nextRow) {\n                        last = !that.sameLevel(nextRow, tr);\n                    }\n\n                    return {\n                        item: tr,\n                        content: tr,\n                        first: first,\n                        last: last\n                    };\n                },\n                dragstart: (function(source) {\n                    this.wrapper.addClass(\"k-treelist-dragging\");\n\n                    if (this.wrapper.find('.k-grid-content').length) {\n                        this.wrapper.find('.k-grid-content table, .k-grid-content-locked table').css(\"position\", \"relative\");\n                    }\n\n                    var model = this.dataItem(source);\n\n                    return this.trigger(DRAGSTART, { source: model });\n                }).bind(this),\n                drag: (function(e) {\n                    e.source = this.dataItem(e.source);\n\n                    this.trigger(DRAG, e);\n                }).bind(this),\n                drop: (function(e) {\n                    e.source = this.dataItem(e.source);\n                    e.destination = this.dataItem(e.destination);\n\n                    this.wrapper.removeClass(\"k-treelist-dragging\");\n\n                    if (this.wrapper.find('.k-grid-content').length) {\n                        this.wrapper.find('.k-grid-content table, .k-grid-content-locked table').css(\"position\", \"static\");\n                    }\n\n                    return this.trigger(DROP, e);\n                }).bind(this),\n                dragend: (function(e) {\n                    var dest = this.dataItem(e.destination);\n                    var src = this.dataItem(e.source);\n                    var originalSrcParentId = src[parentIdField];\n                    var originalSrcIndex = dataSource._indexInChildrenMap(src);\n                    var position = e.position;\n\n                    if (position == \"over\") {\n                        if (pageable) {\n                            dataSource._removeFromChildrenMap(src);\n                            src[parentIdField] = dest ? dest[idField] : null;\n\n                            dataSource._initChildrenMapForParent(dest);\n\n                            // src.set() below will not work as the parent id is already set\n                            src[parentIdField] = originalSrcParentId;\n                        }\n\n                        var isPrevented = src.set(\"parentId\", dest ? dest.id : null);\n\n                        if (pageable && isPrevented) {\n                            dataSource._removeFromChildrenMap(src);\n                            src[parentIdField] = originalSrcParentId;\n                            dataSource._removeFromChildrenMap(src);\n                            dataSource._insertInChildrenMap(src, originalSrcIndex);\n                        }\n\n\n                    } else {\n                        if (position == \"before\") {\n                            that.insertBefore(src, dest);\n                        } else if (position == \"after\") {\n                            that.insertAfter(src, dest);\n                        }\n                    }\n\n                    e.source = src;\n                    e.destination = dest;\n\n                    this.trigger(DRAGEND, e);\n                }).bind(this),\n                reorderable: reorderable,\n                dropHintContainer: function(item) {\n                    return item.children(\"td:visible\").eq(0);\n                },\n                dropPositionFrom: function(dropHint) {\n                    var contents;\n                    var length;\n                    var i;\n                    var dropHintElement;\n                    var isAfterText = false;\n\n                    if (dropHint.parent().find('.k-i-none').length) {\n                        return dropHint.prevAll(\".k-i-none\").length > 0 ? \"after\" : \"before\";\n                    } else {\n                        contents = dropHint.parent().contents();\n                        length = contents.length;\n                        dropHintElement = dropHint[0];\n\n                        for (i = 0; i < length; i++) {\n                            if (contents[i] === dropHintElement) {\n                                break;\n                            }\n\n                            if (contents[i].nodeType === 3) {\n                                isAfterText = true;\n                            }\n                        }\n\n                        return isAfterText ? \"after\" : \"before\";\n                    }\n                }\n            });\n        },\n\n        sameLevel: function() {\n           return arguments[0].find(\".\" + classNames.iconHidden).length === arguments[1].find(\".\" + classNames.iconHidden).length;\n        },\n\n        insertAfter: function(nodeData, referenceNode) {\n            this.insertAction(nodeData, referenceNode, 1);\n        },\n\n        insertBefore: function(nodeData, referenceNode) {\n            this.insertAction(nodeData, referenceNode, 0);\n        },\n\n        insertAction: function(nodeData, referenceNode, indexOffset) {\n            var that = this;\n            var dataSource = that.dataSource;\n            var parentIdField = dataSource._modelParentIdField();\n            var referenceNodeIndex;\n            var nodeDataIndex = dataSource.indexOf(nodeData);\n            var pageable = that._isPageable();\n            var originalDestIndex = dataSource._indexInChildrenMap(referenceNode);\n            var destIndex;\n            var childrenMap = dataSource._getChildrenMap() || {};\n            var parentId = nodeData[parentIdField];\n\n            that._unbindDataSource();\n            that._unbindDataChange();\n\n            if (pageable) {\n                dataSource._removeFromChildrenMap(nodeData);\n            }\n\n            if (nodeData[parentIdField] != referenceNode[parentIdField]) {\n                 nodeData.set(\"parentId\", referenceNode && referenceNode.parentId ? referenceNode.parentId : null);\n            }\n\n            dataSource._data.splice(nodeDataIndex, 1);\n            referenceNodeIndex = dataSource.indexOf(referenceNode);\n            destIndex = referenceNodeIndex + indexOffset;\n\n            if (pageable) {\n                originalDestIndex += indexOffset;\n\n                if (childrenMap[parentId].length <= originalDestIndex) {\n                    originalDestIndex = childrenMap[parentId].length;\n                }\n                dataSource._insertInChildrenMap(nodeData, originalDestIndex);\n            }\n\n            dataSource._data.splice(destIndex, 0, nodeData);\n            dataSource._destroyed.pop();\n            that._bindDataChange();\n            that._bindDataSource();\n            that.refresh();\n        },\n\n        _bindDataChange: function() {\n            var dataSource = this.dataSource;\n            if (dataSource._data && dataSource._changeHandler) {\n                dataSource._data.bind(CHANGE, dataSource._changeHandler);\n                dataSource._data.trigger(CHANGE);\n            }\n        },\n\n        _unbindDataChange: function() {\n            var dataSource = this.dataSource;\n            if (dataSource._data && dataSource._changeHandler) {\n                dataSource._data.unbind(CHANGE, dataSource._changeHandler);\n            }\n        },\n\n        _bindDataSource: function() {\n            var that = this;\n            var dataSource = that.dataSource;\n\n            if (dataSource) {\n                dataSource.bind(CHANGE, that._refreshHandler);\n            }\n        },\n\n        _unbindDataSource: function() {\n            var that = this;\n            var dataSource = that.dataSource;\n\n            if (dataSource) {\n                dataSource.unbind(CHANGE, that._refreshHandler);\n            }\n        },\n\n        itemFor: function(model) {\n            if (typeof model == \"number\") {\n                model = this.dataSource.get(model);\n            }\n\n            return this.tbody.find(\"[\" + kendo.attr(\"uid\") + \"=\" + model.uid + \"]\");\n        },\n\n        _itemFor: function(model) {\n            var that = this;\n            var table = that.lockedContent ? that.lockedTable : that.table;\n\n            if (typeof model == \"number\") {\n                model = this.dataSource.get(model);\n            }\n\n            return table.find(\"[\" + kendo.attr(\"uid\") + \"=\" + model.uid + \"]\");\n        },\n\n        _scrollable: function() {\n            if (this.options.scrollable) {\n                var scrollables = this.thead.closest(\".k-grid-header-wrap\");\n                var lockedContent = $(this.lockedContent)\n                    .on(\"DOMMouseScroll\" + NS + \" mousewheel\" + NS, this._wheelScroll.bind(this));\n\n                this.content.on(\"scroll\" + NS, function() {\n                    kendo.scrollLeft(scrollables, this.scrollLeft);\n                    lockedContent.scrollTop(this.scrollTop);\n                });\n\n\n                var touchScroller = kendo.touchScroller(this.content);\n\n                if (touchScroller && touchScroller.movable) {\n                    this._touchScroller = touchScroller;\n\n                    touchScroller.movable.bind(\"change\", function(e) {\n                        kendo.scrollLeft(scrollables, -e.sender.x);\n                        if (lockedContent) {\n                            lockedContent.scrollTop(-e.sender.y);\n                        }\n                    });\n                }\n            }\n        },\n\n        _wheelScroll: function(e) {\n            if (e.ctrlKey) {\n                return;\n            }\n\n            var delta = kendo.wheelDeltaY(e);\n            var lockedDiv = $(e.currentTarget);\n\n            if (delta) {\n                if (lockedDiv[0].scrollHeight > lockedDiv[0].clientHeight &&\n                    (lockedDiv[0].scrollTop < lockedDiv[0].scrollHeight - lockedDiv[0].clientHeight && delta < 0 ||\n                    lockedDiv[0].scrollTop > 0 && delta > 0)) {\n                    e.preventDefault();\n                }\n                //In Firefox DOMMouseScroll event cannot be canceled\n                lockedDiv.one(\"wheel\" + NS, false);\n\n                this.content.scrollTop(this.content.scrollTop() + (-delta));\n            }\n        },\n\n        _progress: function() {\n            var messages = this.options.messages;\n\n            if (!this.tbody.find(\"tr\").length) {\n                this._showStatus(\n                    kendo.template(\n                        \"<span class='#= className #'></span> #: messages.loading #\"\n                    )({\n                        className: classNames.icon + \" \" + classNames.loading,\n                        messages: messages\n                    })\n                );\n            }\n        },\n\n        _error: function(e) {\n            if (!this.dataSource.rootNodes().length) {\n                this._render({ error: e });\n            }\n        },\n\n        refresh: function(e) {\n            var that = this;\n            e = e || {};\n\n            if (e.action == \"itemchange\" && this.editor) {\n                return;\n            }\n\n            if (this.trigger(DATABINDING)) {\n                return;\n            }\n            var current = $(this.current());\n            var isCurrentInHeader = false;\n            var currentIndex;\n\n            this._cancelEditor();\n\n            this._render();\n\n            this._adjustHeight();\n\n            if (this.options.navigatable) {\n                if (this._isActiveInTable() || this.editor) {\n                    isCurrentInHeader = current.is(\"th\");\n                    currentIndex = Math.max(this.cellIndex(current), 0);\n                }\n                this._restoreCurrent(currentIndex, isCurrentInHeader);\n            }\n\n            if (that._checkBoxSelection) {\n                that._deselectCheckRows(that.items(), true);\n            }\n\n            this.trigger(DATABOUND);\n        },\n\n        _angularFooters: function(command) {\n            var i, footer, aggregates;\n            var allAggregates = this.dataSource.aggregates();\n            var footerRows = this._footerItems();\n\n            for (i = 0; i < footerRows.length; i++) {\n                footer = footerRows.eq(i);\n                aggregates = allAggregates[footer.attr(\"data-parentId\")];\n\n                this._angularFooter(command, footer.find(\"td\").get(), aggregates);\n            }\n        },\n\n        _angularFooter: function(command, cells, aggregates) {\n            var columns = this.columns;\n            this.angular(command, function() {\n                return {\n                    elements: cells,\n                    data: map(columns, function(col) {\n                        return {\n                            column: col,\n                            aggregate: aggregates && aggregates[col.field]\n                        };\n                    })\n                };\n            });\n        },\n\n        items: function() {\n            if (this._hasLockedColumns) {\n                return this._items(this.tbody).add(this._items(this.lockedTable));\n            } else {\n                return this._items(this.tbody);\n            }\n        },\n\n        _items: function(container) {\n            return container.find(\"tr[data-uid]\").filter(function() {\n                return !$(this).hasClass(classNames.footerTemplate);\n            });\n        },\n\n        _footerItems: function() {\n            var container = this.tbody;\n            if (this._hasLockedColumns) {\n                container = container.add(this.lockedTable);\n            }\n\n            return container.find(\"tr\").filter(function() {\n                return $(this).hasClass(classNames.footerTemplate);\n            });\n        },\n\n        dataItems: function() {\n            var dataItems = kendo.ui.DataBoundWidget.fn.dataItems.call(this);\n            if (this._hasLockedColumns) {\n                var n = dataItems.length, tmp = new Array(2 * n);\n                for (var i = n; --i >= 0;) {\n                    tmp[i] = tmp[i + n] = dataItems[i];\n                }\n                dataItems = tmp;\n            }\n\n            return dataItems;\n        },\n\n        _showNoRecordsTemplate: function() {\n            var wrapper = '<div class=\"{0}\">{1}</div>';\n            var defaultTemplate = '<div class=\"k-grid-norecords-template\"{1}>{0}</div>';\n            var scrollableNoGridHeightStyles = (this.options.scrollable && !this.wrapper[0].style.height) ? ' style=\"margin:0 auto;position:static;\"' : '';\n            var template;\n\n            this._contentTree.render([]);\n            if (this._hasLockedColumns) {\n                this._lockedContentTree.render([]);\n            }\n\n            template = kendo.format(defaultTemplate, this.options.messages.noRows, scrollableNoGridHeightStyles);\n\n            $(kendo.template(kendo.format(wrapper, NORECORDSCLASS, template))({})).insertAfter(this.table);\n        },\n\n        _showStatus: function(message) {\n            var status = this.element.find(\".k-status\");\n            var content = $(this.content).add(this.lockedContent);\n\n            if (!status.length) {\n                status = $(\"<div class='k-status' role='alert' aria-live='polite' />\").appendTo(this.element);\n            }\n\n            this._contentTree.render([]);\n            if (this._hasLockedColumns) {\n                this._lockedContentTree.render([]);\n            }\n\n            content.hide();\n\n            status.html(message);\n        },\n\n        _hideStatus: function() {\n            this.element.find(\".k-status\").remove();\n            this._hideNoRecordsTempalte();\n\n            $(this.content).add(this.lockedContent).show();\n        },\n\n        _hideNoRecordsTempalte: function() {\n            this.element.find(\".\" + NORECORDSCLASS).remove();\n        },\n\n        _adjustHeight: function() {\n            var that = this;\n            var element = this.element;\n            var contentWrap = element.find(DOT + classNames.gridContentWrap);\n            var header = element.find(DOT + classNames.gridHeader);\n            var toolbar = element.find(DOT + classNames.gridToolbar);\n            var status = element.find(DOT + classNames.status);\n            var pagerHeight = that._isPageable() && that.pager && that.pager.element.is(\":visible\") ? outerHeight(that.pager.element) : 0;\n            var height;\n            var scrollbar = kendo.support.scrollbar();\n\n            element.css(HEIGHT, this.options.height);\n\n            // identical code found in grid & scheduler :(\n            var isHeightSet = function(el) {\n                var initialHeight, newHeight;\n                if (el[0].style.height) {\n                    return true;\n                } else {\n                    initialHeight = el.height();\n                }\n\n                el.height(\"auto\");\n                newHeight = el.height();\n                el.height(\"\");\n\n                return (initialHeight != newHeight);\n            };\n\n            if (isHeightSet(element)) {\n                height = element.height() - outerHeight(header) - outerHeight(toolbar) - outerHeight(status) - pagerHeight;\n\n                contentWrap.height(height);\n\n                if (this._hasLockedColumns) {\n                    scrollbar = this.table[0].offsetWidth > this.table.parent()[0].clientWidth ? scrollbar : 0;\n                    this.lockedContent.height(height - scrollbar);\n                }\n            }\n        },\n\n        _resize: function(size, force) {\n            this._applyLockedContainersWidth();\n            this._adjustHeight();\n\n            if (this.pager && this.pager.element) {\n                this.pager.resize(force);\n            }\n        },\n\n        _minScreenSupport: function() {\n            var any = this.hideMinScreenCols();\n\n            if (any) {\n                this.minScreenResizeHandler = this.hideMinScreenCols.bind(this);\n                $(window).on(\"resize\", this.minScreenResizeHandler);\n            }\n        },\n\n        _iterateMinScreenCols: function(cols, screenWidth) {\n            var any = false;\n\n            for (var i = 0; i < cols.length; i++) {\n                var col = cols[i];\n                var minWidth = col.minScreenWidth;\n                if (minWidth !== undefined && minWidth !== null) {\n                    any = true;\n                    if (minWidth > screenWidth) {\n                        this.hideColumn(col);\n                    } else {\n                        this.showColumn(col);\n                    }\n                }\n                if (!col.hidden && col.columns) {\n                    any = this._iterateMinScreenCols(col.columns, screenWidth) || any;\n                }\n            }\n            return any;\n        },\n\n        hideMinScreenCols: function() {\n            var cols = this.columns,\n                screenWidth = (window.innerWidth > 0) ? window.innerWidth : screen.width;\n\n            return this._iterateMinScreenCols(cols, screenWidth);\n        },\n\n        destroy: function() {\n            this._destroyColumnAttachments();\n\n            DataBoundWidget.fn.destroy.call(this);\n\n            var dataSource = this.dataSource;\n\n            dataSource.unbind(CHANGE, this._refreshHandler);\n            dataSource.unbind(ERROR, this._errorHandler);\n            dataSource.unbind(PROGRESS, this._progressHandler);\n\n            this._navigatableTables = null;\n            this._current = null;\n\n            if (this._resizeHandler) {\n                $(window).off(\"resize\" + NS, this._resizeHandler);\n            }\n\n            if (this._dragging) {\n                this._dragging.destroy();\n                this._dragging = null;\n            }\n\n            if (this.resizable) {\n                this.resizable.destroy();\n                this.resizable = null;\n            }\n\n            if (this.reorderable) {\n                this.reorderable.destroy();\n                this.reorderable = null;\n            }\n\n            if (this._draggableInstance && this._draggableInstance.element) {\n                this._draggableInstance.destroy();\n                this._draggableInstance = null;\n            }\n\n            if (this.selectable) {\n                this.selectable.destroy();\n            }\n\n            if (this._userEvents) {\n                this._userEvents.destroy();\n                this._userEvents = null;\n            }\n\n            if (this.minScreenResizeHandler) {\n                $(window).off(\"resize\", this.minScreenResizeHandler);\n            }\n\n            this._destroyEditor();\n\n            this.element.off(NS);\n            if (this.wrapper) {\n                this.wrapper.off(NS);\n            }\n\n            if (this._touchScroller) {\n                this._touchScroller.destroy();\n            }\n\n            this._destroyPager();\n\n            if (dataSource) {\n                dataSource._dataMaps = null;\n            }\n\n            this._autoExpandable = null;\n\n            this._refreshHandler = this._errorHandler = this._progressHandler = this._dataSourceFetchProxy = null;\n\n            this.thead =\n                this.content =\n                this.tbody =\n                this.table =\n                this.element =\n                this.lockedHeader =\n                this.lockedContent = null;\n\n            this._statusTree =\n                this._headerTree =\n                this._contentTree =\n                this._lockedHeaderColsTree =\n                this._lockedContentColsTree =\n                this._lockedHeaderTree =\n                this._lockedContentTree = null;\n\n            kendo.destroy(this.wrapper);\n        },\n\n        options: {\n            name: \"TreeList\",\n            columns: [],\n            autoBind: true,\n            scrollable: true,\n            selectable: false,\n            sortable: false,\n            toolbar: null,\n            height: null,\n            columnMenu: false,\n            messages: {\n                noRows: \"No records to display\",\n                loading: \"Loading...\",\n                requestFailed: \"Request failed.\",\n                retry: \"Retry\",\n                commands: {\n                    edit: \"Edit\",\n                    update: \"Update\",\n                    canceledit: \"Cancel\",\n                    create: \"Add new record\",\n                    createchild: \"Add child record\",\n                    destroy: \"Delete\",\n                    excel: \"Export to Excel\",\n                    pdf: \"Export to PDF\",\n                    search: \"Search...\"\n                }\n            },\n            excel: {\n                hierarchy: true\n            },\n            resizable: false,\n            search: false,\n            filterable: false,\n            editable: false,\n            reorderable: false,\n            pageable: false,\n            renderAllRows: true,\n            rowTemplate: \"\",\n            altRowTemplate: \"\"\n        },\n\n        events: [\n            CHANGE,\n            BEFORE_EDIT,\n            EDIT,\n            PAGE,\n            SAVE,\n            SAVE_CHANGES,\n            REMOVE,\n            EXPAND,\n            COLLAPSE,\n            DATABINDING,\n            DATABOUND,\n            CANCEL,\n            DRAGSTART,\n            DRAG,\n            DROP,\n            DRAGEND,\n            FILTERMENUINIT,\n            ITEM_CHANGE,\n            CELL_CLOSE,\n            FILTERMENUOPEN,\n            COLUMNHIDE,\n            COLUMNSHOW,\n            COLUMNREORDER,\n            COLUMNRESIZE,\n            COLUMNMENUINIT,\n            COLUMNMENUOPEN,\n            COLUMNLOCK,\n            COLUMNUNLOCK\n        ],\n\n        getOptions: function() {\n            var options = this.options;\n            options.dataSource = null;\n\n            var result = extend(true, {}, this.options);\n            result.columns = kendo.deepExtend([], this.columns);\n\n            var dataSource = this.dataSource;\n\n            var initialData = dataSource.options.data && dataSource._data;\n            dataSource.options.data = null;\n\n            result.dataSource = $.extend(true, {}, dataSource.options);\n\n            dataSource.options.data = initialData;\n\n            result.dataSource.data = initialData;\n            result.dataSource.page = dataSource.page();\n            result.dataSource.filter = $.extend(true, {}, dataSource.filter());\n            result.dataSource.pageSize = dataSource.pageSize();\n            result.dataSource.sort = dataSource.sort();\n            result.dataSource.group = dataSource.group();\n            result.dataSource.aggregate = dataSource.aggregate();\n\n            if (result.dataSource.transport) {\n                result.dataSource.transport.dataSource = null;\n            }\n\n            if (result.pageable && result.pageable.pageSize) {\n                result.pageable.pageSize = dataSource.pageSize();\n            }\n\n            result.$angular = undefined;\n\n            return result;\n        },\n\n        setOptions: function(options) {\n            var currentOptions = this.getOptions();\n            kendo.deepExtend(currentOptions, options);\n            if (!options.dataSource) {\n                currentOptions.dataSource = this.dataSource;\n            }\n            var wrapper = this.wrapper;\n            var events = this._events;\n            var element = this.element;\n\n            this.destroy();\n            this.options = null;\n            if (wrapper[0] !== element[0]) {\n                wrapper.before(element);\n                wrapper.remove();\n            }\n            element.empty();\n\n            this.init(element, currentOptions, events);\n            this._setEvents(currentOptions);\n        },\n\n        _destroyColumnAttachments: function() {\n            var that = this;\n\n            if (!that.thead) {\n                return;\n            }\n\n            this.angular(\"cleanup\", function() {\n                return { elements: that.thead.get() };\n            });\n\n            that.thead.add(that.lockedHeader).find(\"th\").each(function() {\n                var th = $(this),\n                    filterMenu = th.data(\"kendoFilterMenu\"),\n                    sortable = th.data(\"kendoColumnSorter\"),\n                    columnMenu = th.data(\"kendoColumnMenu\");\n\n                if (filterMenu) {\n                    filterMenu.destroy();\n                }\n\n                if (sortable) {\n                    sortable.destroy();\n                }\n\n                if (columnMenu) {\n                    columnMenu.destroy();\n                }\n            });\n        },\n\n        _toggle: function(model, expand) {\n            var that = this;\n            var defaultPromise = $.Deferred().resolve().promise();\n            var loaded = model.loaded();\n\n             if (that._isIncellEditable() && that.editor) {\n                // manually trigger change as the expand/collapse icons are not focusable\n                $(activeElement()).change();\n                that.closeCell();\n            }\n\n            // reset error state\n            if (model._error) {\n                model.expanded = false;\n                model._error = undefined;\n            }\n\n            // do not load items that are currently loading\n            if (!loaded && model.expanded) {\n                return defaultPromise;\n            }\n\n            // toggle expanded state\n            if (typeof expand == \"undefined\") {\n                expand = !model.expanded;\n            }\n\n            model.expanded = expand;\n\n            function afterModelLoaded() {\n                that._toggleData();\n                if (that._isPageable()) {\n                    that.refresh();\n                } else {\n                    that._render();\n                }\n                that._syncLockedContentHeight();\n            }\n\n            if (!loaded) {\n                defaultPromise = this.dataSource.load(model)\n                    .always((function() {\n                        afterModelLoaded();\n                    }));\n            }\n\n            afterModelLoaded();\n\n            return defaultPromise;\n        },\n\n        _toggleData: function() {\n            var that = this;\n\n            if (that._isPageable()) {\n                that._togglePageableData();\n            }\n        },\n\n        _togglePageableData: function() {\n            var that = this;\n            var dataSource = that.dataSource;\n            var data = dataSource._getData();\n            var result;\n            var queryOptions = dataSource._defaultPageableQueryOptions();\n\n            that._renderProgress(true);\n\n            var childrenMap = dataSource._getChildrenMap() || dataSource.childrenMap(dataSource._getData());\n\n            dataSource._processDataItemsState(data, childrenMap);\n\n            result = dataSource._processPageableQuery(data, queryOptions);\n\n            queryOptions.childrenMap = result.childrenMap;\n            queryOptions.filteredChildrenMap = result.filteredChildrenMap;\n\n            dataSource._aggregateResult = dataSource._calculateAggregates(result.dataToAggregate, queryOptions);\n\n            dataSource.view(result.data);\n\n            if (!dataSource.filter()) {\n                dataSource._calculateCollapsedTotal();\n            }\n\n            that._refreshPager();\n\n            that._renderProgress(false);\n        },\n\n        _refreshPager: function() {\n            var pager = this.pager;\n\n            if (pager) {\n                pager.refresh();\n            }\n        },\n\n        expand: function(row) {\n            return this._toggle(this.dataItem(row), true);\n        },\n\n        collapse: function(row) {\n            return this._toggle(this.dataItem(row), false);\n        },\n\n        _toggleChildren: function(e) {\n            var icon = $(e.target);\n            var model = this.dataItem(icon);\n\n            if (!model) {\n                return;\n            }\n\n            var event = !model.expanded ? EXPAND : COLLAPSE;\n\n            if (!this.trigger(event, { model: model })) {\n                this._toggle(model);\n            }\n\n            e.preventDefault();\n        },\n\n        _navigatable: function() {\n            var that = this;\n\n            if (!that.options.navigatable) {\n                return;\n            }\n            var tables = that.table.add(that.lockedTable);\n\n            var headerTables = that.thead.parent().add($(\">table\", that.lockedHeader));\n            if (that.options.scrollable) {\n                //add the header table when the widget is scrollable\n                tables = tables.add(headerTables);\n                //data tables will recive first focus on TAB\n                headerTables.attr(TABINDEX, -1);\n            }\n\n            headerTables\n                .on(\"keydown\" + NS, that._openHeaderMenu.bind(that))\n                .find(\"a.k-link\").attr(\"tabIndex\", -1);\n\n            this._navigatableTables = tables;\n\n            tables\n                //handle click on tables, will attempt to focus the table\n                .on((kendo.support.touch ? \"touchstart\" + NS : \"mousedown\" + NS), NAVROW + \">:visible\", that._tableClick.bind(that))\n                .on(\"focus\" + NS, that._tableFocus.bind(that))\n                .on(\"focusout\" + NS, that._tableBlur.bind(that))\n                .on(\"keydown\" + NS, that._tableKeyDown.bind(that));\n        },\n\n        _openHeaderMenu: function(e) {\n            if (e.altKey && e.keyCode == keys.DOWN) {\n                this.current().find(\".k-grid-filter, .k-header-column-menu\").click();\n                e.stopImmediatePropagation();\n            }\n        },\n\n        cellIndex: function(td) {\n            var lockedColumnOffset = 0;\n\n            if (this.lockedTable && !$.contains(this.lockedTable[0], td[0])) {\n                lockedColumnOffset = leafColumns(lockedColumns(this.columns)).length;\n            }\n\n            return $(td).parent().children().index(td) + lockedColumnOffset;\n        },\n\n        _isActiveInTable: function() {\n            var active = kendo._activeElement();\n\n            if (!active) { return false; }\n\n            return this.table[0] === active ||\n                $.contains(this.table[0], active) ||\n                (this.lockedTable &&\n                    (this.lockedTable[0] === active || $.contains(this.lockedTable[0], active))\n                );\n        },\n\n        _restoreCurrent: function(currentIndex, isCurrentInHeader) {\n            var rowIndex;\n            var row;\n            var td;\n\n            if (currentIndex === undefined || currentIndex < 0) {\n                return;\n            }\n\n            if (this._current) {\n                this._current.removeClass(\"k-focus\");\n            }\n\n            if (isCurrentInHeader) {\n                this.current(this.thead.find(\"th\").eq(currentIndex));\n            } else {\n                rowIndex = 0;\n                currentIndex = 0;\n\n                row = $();\n\n                if (this.lockedTable) {\n                    row = this.lockedTable.find(\">tbody>tr:visible\").eq(rowIndex);\n                }\n                row = row.add(this.tbody.children().eq(rowIndex));\n\n                td = row.find(\">td:visible\")\n                    .eq(currentIndex);\n\n                this.current(td);\n            }\n\n            if (this._current) {\n                focusTable(this._current.closest(\"table\")[0], true);\n            }\n        },\n\n        current: function(newCurrent) {\n            var current = this._current;\n            newCurrent = $(newCurrent);\n\n            if (newCurrent.length && (!current || current[0] !== newCurrent[0])) {\n                this._updateCurrentAttr(current, newCurrent);\n\n                this._scrollCurrent();\n            }\n\n            if (newCurrent && newCurrent.length) {\n                this._lastCellIndex = newCurrent.parent().children(DATA_CELL).index(newCurrent);\n            }\n\n            return this._current;\n        },\n\n        _setCurrent: function(newCurrent) {\n            var that = this;\n            newCurrent = $(newCurrent);\n\n            if (newCurrent[0]) {\n                that._current = newCurrent;\n                that._updateCurrentAttr(that._current, newCurrent);\n                that._scrollCurrent();\n            }\n\n            return that._current;\n        },\n\n        _scrollCurrent: function() {\n            var current = this._current;\n            var scrollable = this.options.scrollable;\n\n            if (!current || !scrollable) {\n                return;\n            }\n\n            var row = current.parent();\n            var tableContainer = row.closest(\"table\").parent();\n\n            var isInLockedContainer = tableContainer.is(\".k-grid-content-locked,.k-grid-header-locked\");\n            var isInContent = tableContainer.is(\".k-grid-content-locked,.k-grid-content\");\n\n            var scrollableContainer = $(this.content)[0];\n\n            //adjust scroll vertically\n            if (isInContent) {\n                this._scrollTo(this._relatedRow(row)[0], scrollableContainer);\n            }\n\n            if (this.lockedContent) {\n                //sync locked and non-locked content scrollTop\n                this.lockedContent[0].scrollTop = scrollableContainer.scrollTop;\n            }\n\n            //adjust scroll horizontally, if not inside locked tables\n            if (!isInLockedContainer) {\n                this._scrollTo(current[0], scrollableContainer);\n            }\n        },\n\n        _findCurrentCell: function() {\n            var that = this;\n            var current = that.current();\n            var elements = $(that.table).add(that.header).add(that.lockedTable).add(that.lockedHeader);\n\n            if (current && elements.find(current).length > 0) {\n                return current;\n            } else {\n                return elements.find(DOT + classNames.focused);\n            }\n        },\n\n        _scrollTo: function(element, container) {\n            var elementToLowercase = element.tagName.toLowerCase();\n            var isHorizontal = elementToLowercase === \"td\" || elementToLowercase === \"th\";\n            var table = $(element).closest(\"table\")[0];\n            var elementOffsetDir = element[isHorizontal ? \"offsetWidth\" : \"offsetHeight\"];\n            var containerScroll = container[isHorizontal ? \"scrollLeft\" : \"scrollTop\"];\n            var containerOffsetDir = container[isHorizontal ? \"clientWidth\" : \"clientHeight\"];\n            var elementOffset = $(element).css(\"position\") === \"relative\" && isRtl && isHorizontal ? Math.abs(table.offsetLeft - element.offsetLeft) : element[isHorizontal ? \"offsetLeft\" : \"offsetTop\"];\n            var bottomDistance = elementOffset + elementOffsetDir;\n            var result = 0;\n            var ieCorrection = 0;\n            var firefoxCorrection = 0;\n\n            if (isRtl && isHorizontal) {\n                if (browser.msie || browser.edge) {\n                    ieCorrection = table.offsetLeft;\n                } else if (browser.mozilla || (browser.webkit && (browser.version > 85))) {\n                    firefoxCorrection = table.offsetLeft - kendo.support.scrollbar();\n                }\n            }\n            containerScroll = Math.abs(containerScroll + ieCorrection - firefoxCorrection);\n            if (containerScroll > elementOffset) {\n                result = elementOffset;\n            } else if (bottomDistance > (containerScroll + containerOffsetDir)) {\n                if (elementOffsetDir <= containerOffsetDir) {\n                    result = (bottomDistance - containerOffsetDir);\n                } else {\n                    result = elementOffset;\n                }\n            } else {\n                result = containerScroll;\n            }\n            result = Math.abs(result + ieCorrection) + firefoxCorrection;\n            container[isHorizontal ? \"scrollLeft\" : \"scrollTop\"] = result;\n        },\n\n        _aria: function() {\n            var id = this.element.attr(\"id\") || \"aria\";\n\n            if (id) {\n                this._elementId = id + \"_active_element\";\n            }\n        },\n\n        _currentDataIndex: function(table, current) {\n            var index = current.attr(\"data-index\");\n\n            if (!index) {\n                return undefined;\n            }\n\n            var lockedColumnsCount = lockedColumns(this.columns).length;\n            if (lockedColumnsCount && !table.closest(\"div\").hasClass(\"k-grid-content-locked\")[0]) {\n                return index - lockedColumnsCount;\n            }\n\n            return index;\n        },\n\n        _prevVerticalCell: function(container, current) {\n            var cells;\n            var row = current.parent();\n            var rows = container.children(NAVROW);\n            var rowIndex = rows.index(row);\n            //get data-index in case of last level of multi-level columns\n            var index = this._currentDataIndex(container, current);\n            var cellSelector = DATA_CELL + \",\" + FILTER_CELL;\n\n            //current is in the header, but not at the last level of multi-level columns\n            if (index || current.hasClass(\"k-header\")) {\n                cells = parentColumnsCells(current);\n                return cells.eq(cells.length - 2);\n            }\n\n            index = Math.max(row.children(cellSelector).index(current), this._lastCellIndex || 0);\n\n            //if current is inside filter row\n            if (row.hasClass(\"k-filter-row\")) {\n                return leafDataCells(container).filter(isCellVisible).eq(index);\n            }\n\n            //move up to header container\n            if (rowIndex == -1) {\n                //is there filter row in the header container\n                row = container.find(\"tr.k-filter-row:visible\");\n                if (!row[0]) {\n                    return leafDataCells(container).filter(isCellVisible).eq(index);\n                }\n            } else {\n                row = rowIndex === 0 ? $() : rows.eq(rowIndex - 1);\n            }\n\n            cells = row.children(cellSelector);\n            if (cells.length > index) {\n                return cells.eq(index);\n            }\n\n            return cells.eq(0);\n        },\n\n        _nextVerticalCell: function(container, current) {\n            var cells;\n            var row = current.parent();\n            var rows = container.children(NAVROW);\n            var rowIndex = rows.index(row);\n            //get data-index in case of last level of multi-level columns\n            var index = this._currentDataIndex(container, current);\n            var cellSelector = DATA_CELL + \",\" + FILTER_CELL;\n\n            //current is in the header, but not at the last level of multi-level columns\n            //and we are not changing the table\n            if (rowIndex != -1 && index === undefined && current.hasClass(\"k-header\")) {\n                return childColumnsCells(current).eq(1);\n            }\n\n            index = index ? parseInt(index, 10) : row.children(cellSelector).index(current);\n            index = Math.max(index, this._lastCellIndex || 0);\n\n            //move down to data container\n            if (rowIndex == -1) {\n                row = rows.eq(0);\n            } else {\n                row = rows.eq(rowIndex + current[0].rowSpan);\n            }\n\n            var tmpIndex = index;\n            //in case of last level of multi-level columns the index should be updated depending on the hidden columns\n            if (this._currentDataIndex(container, current) !== undefined) {\n                var currentRowCells = row.children(\":not(.k-group-cell):not(.k-hierarchy-cell)\");\n                var hiddenColumns = currentRowCells.filter(\":hidden\");\n                for (var idx = 0, length = hiddenColumns.length; idx < length; idx++) {\n                    if (currentRowCells.index(hiddenColumns[idx]) < index) {\n                        tmpIndex--;\n                    }\n                }\n            }\n            index = tmpIndex;\n\n            cells = row.children(cellSelector);\n            if (cells.length > index) {\n                return cells.eq(index);\n            }\n\n            return cells.eq(0);\n        },\n\n        _verticalContainer: function(container, up) {\n            var table = container.parent();\n            var length = this._navigatableTables.length;\n            var step = Math.floor(length / 2);\n            var index = inArray(table[0], this._navigatableTables);\n\n            if (up) {\n                step *= -1;\n            }\n            index += step;\n\n            if (index >= 0 || index < length) {\n                table = this._navigatableTables.eq(index);\n            }\n\n            return table.find(up ? \"thead\" : \"tbody\");\n        },\n\n        _updateCurrentAttr: function(current, next) {\n            var headerId = $(current).data(\"headerId\");\n\n            $(current)\n                .removeClass(classNames.focused)\n                .closest(\"table\")\n                .removeAttr(\"aria-activedescendant\");\n\n            if (headerId) {\n                headerId = headerId.replace(this._elementId, \"\");\n                $(current).attr(\"id\", headerId);\n            } else {\n                $(current).removeAttr(\"id\");\n            }\n\n            next\n                .data(\"headerId\", next.attr(\"id\"))\n                .attr(\"id\", this._elementId)\n                .addClass(classNames.focused)\n                .closest(\"table\")\n                .attr(\"aria-activedescendant\", this._elementId);\n\n            this._current = next;\n        },\n\n        _tableKeyDown: function(e) {\n            var handled = false;\n            var current = this.current();\n            var target = $(e.target);\n            var canHandle = !e.isDefaultPrevented() && !target.is(\":button,a,:input,a>.k-icon\");\n\n            current = current ? current : $(this.lockedTable).add(this.table).find(NAVROW + \" > td:visible\").first();\n\n            if (canHandle && e.keyCode == keys.UP) {\n                handled = this._moveUp(current, e.shiftKey);\n            }\n\n            if (canHandle && e.keyCode == keys.DOWN) {\n                handled = this._moveDown(current, e.shiftKey);\n            }\n\n            if (canHandle && e.keyCode == (isRtl ? keys.LEFT : keys.RIGHT)) {\n                if (e.altKey) {\n                    handled = this._handleExpand(current);\n                } else {\n                    handled = this._moveRight(current);\n                }\n            }\n\n            if (canHandle && e.keyCode == (isRtl ? keys.RIGHT : keys.LEFT)) {\n                if (e.altKey) {\n                    handled = this._handleCollapse(current);\n                } else {\n                    handled = this._moveLeft(current);\n                }\n            }\n\n            if (canHandle && e.keyCode == keys.PAGEDOWN) {\n                handled = this._handlePageDown();\n            }\n\n            if (canHandle && e.keyCode == keys.PAGEUP) {\n                handled = this._handlePageUp();\n            }\n\n            if (e.keyCode == keys.ENTER || e.keyCode == keys.F2) {\n                handled = this._handleEnterKey(current, e.currentTarget, target);\n            }\n\n            if (e.keyCode == keys.ESC) {\n                handled = this._handleEscKey(current, e.currentTarget);\n            }\n\n            if (canHandle && e.keyCode == keys.HOME) {\n                handled = this._handleHome(current, e.ctrlKey);\n            }\n\n            if (canHandle && e.keyCode == keys.END) {\n                handled = this._handleEnd(current, e.ctrlKey);\n            }\n\n            if (e.keyCode == keys.TAB) {\n                handled = this._handleTabKey(current, e.currentTarget, e.shiftKey);\n            }\n\n            if (handled) {\n                //prevent scrolling while pressing the keys\n                e.preventDefault();\n                //required in hierarchy\n                e.stopPropagation();\n            }\n        },\n\n        _handleExpand: function(current) {\n            var that = this;\n            var row = current.parent();\n            var model = that.dataItem(row);\n\n            if (current.hasClass(\"k-header\")) {\n                return false;\n            }\n\n            if (model && model.hasChildren && !model.expanded && !that.trigger(EXPAND, { model: model })) {\n                this.expand(row);\n                return true;\n            }\n\n            return false;\n        },\n\n        _handleCollapse: function(current) {\n            var that = this;\n            var row = current.parent();\n            var model = that.dataItem(row);\n\n            if (current.hasClass(\"k-header\")) {\n                return false;\n            }\n\n            if (model && model.hasChildren && model.expanded && !that.trigger(COLLAPSE, { model: model })) {\n                that.collapse(row);\n                return true;\n            }\n\n            return false;\n        },\n\n        _handleHome: function(current, ctrl) {\n            var row = current.parent();\n            var rowContainer = row.parent();\n            var isInLockedTable = this.lockedTable && this.lockedTable.children(\"tbody\")[0] === rowContainer[0];\n            var isInBody = rowContainer[0] === this.tbody[0];\n            var prev;\n\n            if (ctrl) {\n                if (this.lockedTable) {\n                    prev = this.lockedTable.find(NAVROW + \" > td:visible\").first();\n                } else {\n                    prev = this.table.find(NAVROW + \" > td:visible\").first();\n                }\n            } else if (isInBody || isInLockedTable) {\n                if (isInBody && this.lockedTable) {\n                    row = this._relatedRow(row);\n                }\n                prev = row.children(NAVCELL).first();\n            }\n\n            if (prev && prev.length) {\n                this.current(prev);\n                return true;\n            }\n        },\n\n        _handleEnd: function(current, ctrl) {\n            var row = current.parent();\n            var rowContainer = row.parent();\n            var isInLockedTable = this.lockedTable && this.lockedTable.children(\"tbody\")[0] === rowContainer[0];\n            var isInBody = rowContainer[0] === this.tbody[0];\n            var next;\n\n            if (ctrl) {\n                next = this.table.find(ITEMROW).last().children(NAVCELL).last();\n            } else if (isInBody || isInLockedTable) {\n                if (!isInBody && this.lockedTable) {\n                    row = this._relatedRow(row);\n                }\n                next = row.children(NAVCELL).last();\n            }\n\n            if (next && next.length) {\n                this.current(next);\n                return true;\n            }\n        },\n\n        _handlePageDown: function() {\n            var that = this;\n\n            if (!that._isPageable()) {\n                return false;\n            }\n\n            that.dataSource._restorePageSizeAfterAddChild();\n            that.dataSource.page(that.dataSource.page() + 1);\n\n            return true;\n        },\n\n        _handlePageUp: function() {\n            var that = this;\n\n            if (!that._isPageable()) {\n                return false;\n            }\n\n            that.dataSource._restorePageSizeAfterAddChild();\n            that.dataSource.page(that.dataSource.page() - 1);\n\n            return true;\n        },\n\n        _handleEscKey: function(current, currentTable) {\n            var active = kendo._activeElement();\n            var currentIndex;\n            var that = this;\n            var row;\n            var rowIndex;\n            var cellIndex;\n            var tbody;\n\n            if (!current || !current.parent().hasClass(\"k-grid-edit-row\")) {\n                if (current.has(active).length) {\n                    // return focus back to the table\n                    focusTable(currentTable, true);\n\n                    return true;\n                }\n                return false;\n            }\n\n            if (that._isIncellEditable()) {\n                row = current.parent();\n                cellIndex = current.index();\n                rowIndex = row.index();\n                tbody = row.closest(\"tbody\");\n\n                that.closeCell(true);\n\n                // refresh the current element as the DOM element reference can be changed after render()\n                // moving this to closeCell() causes flickering when clicking on a cell and then on another\n                // as 'k-focused' is shown for the closing cell and then added to the newly edited cell\n                that._setCurrent(tbody.children().eq(rowIndex).children().eq(cellIndex));\n            } else {\n                currentIndex = $(current).parent().index();\n                if (active) {\n                    active.blur();\n                }\n                this.cancelRow();\n                if (currentIndex >= 0) {\n                    this.current(this.items().eq(currentIndex).children(NAVCELL).first());\n                }\n            }\n\n            focusTable(currentTable, true);\n\n            return true;\n        },\n\n        _handleEnterKey: function(current, currentTable, target) {\n            var editable = this.options.editable;\n            var container = target.closest(\"[role=gridcell]\");\n            var focusable;\n\n            if (!target.is(\"table\") && !$.contains(current[0], target[0])) {\n                current = container;\n            }\n\n            if (current.is(\"th\")) {\n                // sort the column, if possible\n                current.find(\".k-link\").click();\n                return true;\n            }\n\n            focusable = current.find(\":kendoFocusable\").first();\n            if (focusable[0] && current.hasClass(\"k-focus\")) {\n                focusable.trigger(\"focus\");\n\n                return true;\n            }\n\n            if (editable && !target.is(\":button,.k-button,textarea\")) {\n                if (!container[0]) {\n                    container = current;\n                }\n\n                this._handleEditing(container, false, currentTable);\n\n                return true;\n            }\n\n            return false;\n        },\n\n        _handleTabKey: function(current, currentTable, shiftKey) {\n            var that = this;\n            var incellEditing = that.options.editable && that._isIncellEditable();\n            var cell;\n\n            if (!incellEditing || current.is(\"th\")) {\n                return false;\n            }\n\n            cell = $(activeElement()).closest(DOT + classNames.editCell);\n\n            if (cell[0] && cell[0] !== current[0]) {\n                current = cell;\n            }\n\n            cell = that._tabNext(current, currentTable, shiftKey);\n\n            if (cell.length) {\n                that._handleEditing(current, cell, cell.closest(TABLE));\n                return true;\n            } else {\n                that._preventPageSizeRestore = false;\n            }\n\n            return false;\n        },\n\n        _tabNext: function(current, currentTable, back) {\n            var that = this;\n            var switchRow = true;\n            var next = back ? current.prevAll(DATA_CELL).first() : current.nextAll(\":visible\").first();\n\n            if (!next.length) {\n                next = current.parent();\n                if (that.lockedTable) {\n                    switchRow = (back && currentTable == that.lockedTable[0]) || (!back && currentTable == that.table[0]);\n                    next = that._relatedRow(next);\n                }\n\n                if (switchRow) {\n                    next = next[back ? \"prevAll\" : \"nextAll\"](\"tr:not(.k-grouping-row):not(.k-detail-row):visible\").first();\n                }\n\n                if (back) {\n                    next = next.children(DATA_CELL).last();\n                } else {\n                    next = next.children(DATA_CELL).first();\n                }\n\n\n                that.dataSource._restorePageSizeAfterAddChild();\n            }\n\n            return next;\n        },\n\n        _handleEditing: function(current, next, table) {\n            var that = this,\n                active = $(kendo._activeElement()),\n                isIE = browser.msie,\n                editContainer,\n                focusable,\n                isEdited;\n            var editable = that.options.editable && that.options.editable.update !== false;\n            var incellEditing = that._isIncellEditable();\n            var nextFocusableCellRowIndex = $(next).parents(\"tr\").index();\n            var nextFocusableCellIndex = $(next).index();\n            var currentFocusedCellRowIndex = $(current).parents(\"tr\").index();\n            var currentFocusedCellIndex = current.index();\n            var editedCell;\n\n            table = $(table);\n\n            if (incellEditing) {\n                isEdited = current.hasClass(classNames.editCell);\n            } else {\n                isEdited = current.parent().hasClass(\"k-grid-edit-row\");\n            }\n\n            if (that.editor) {\n                editContainer = that.editor.wrapper;\n                if (editContainer && $.contains(editContainer[0], active[0])) {\n                    if (browser.opera) {\n                        active.trigger(\"blur\").change().triggerHandler(\"blur\");\n                    } else {\n                        active.trigger(\"blur\");\n                        if (isIE) {\n                            //IE10 with jQuery 1.9.x does not trigger blur handler\n                            //numeric textbox does trigger change\n                            active.trigger(\"blur\");\n                        }\n                    }\n                }\n\n                if (!that.editor) {\n                    focusTable(table);\n                    return;\n                }\n\n                if (that.editor.end()) {\n                    if (incellEditing) {\n                        that._preventPageSizeRestore = true;\n                        that.closeCell();\n                        that._preventPageSizeRestore = false;\n\n                        if ($(that.table).add(that.lockedTable).find(DOT + classNames.editCell).length === 0) {\n                            that.current(table.find(\"tbody\").children().eq(currentFocusedCellRowIndex).children().eq(currentFocusedCellIndex));\n                        }\n                    } else {\n                        that.saveRow();\n                        isEdited = true;\n                    }\n                } else {\n                    if (incellEditing) {\n                        that.current(editContainer);\n                    } else {\n                        that.current(editContainer.children().filter(NAVCELL).first());\n                    }\n\n                    focusable = editContainer.find(\":kendoFocusable\").first()[0];\n                    if (focusable) {\n                        focusable.focus();\n                    }\n                    return;\n                }\n            }\n\n            // the next cell to focus might be re-rendered, so update the reference to it if it is an element\n            next = $(next).length && table.find(next).length === 0 ? table.find(\"tbody\").children().eq(nextFocusableCellRowIndex).children().eq(nextFocusableCellIndex) : next;\n\n            if (next) {\n                that.current(next);\n            }\n\n            focusTable(table, true);\n\n            if (!editable) {\n                return;\n            }\n\n            if ((!isEdited && !next) || next) {\n                var currentIndex = that.current().index();\n\n                if (incellEditing) {\n                    that.editCell(that.current());\n\n                    editedCell = $(that.table).add(that.lockedTable).find(DOT + classNames.editCell)[0];\n\n                    if (editedCell) {\n                        that._current = $(editedCell);\n                    } else {\n                        that.current(that._findCurrentCell());\n                    }\n                } else {\n                    that.editRow(that.current().parent());\n                    that.current(that.editor.wrapper.children().eq(currentIndex));\n                    that.current().removeClass(\"k-focus\");\n                }\n            } else {\n                that.dataSource._restorePageSizeAfterAddChild();\n            }\n        },\n\n        _moveRight: function(current) {\n            var next = current.nextAll(NAVCELL).first();\n            var row = current.parent();\n            var rowIndex = row.index();\n\n            if (current.hasClass(\"k-header\") || row.is('.k-filter-row')) {\n                next = current.nextAll(NAVHEADER).first();\n                if (!next[0] && this.lockedTable && current.closest(\"table\")[0] === this.lockedHeader.find(\"table\")[0]) {\n                    next = this.thead.find(\"tr\").eq(rowIndex).find(NAVHEADER).first();\n                }\n            }\n\n            if (!next[0] && this.lockedTable && current.closest(\"table\")[0] === this.lockedTable[0]) {\n               next = this._relatedRow(row).children(NAVCELL).first();\n            }\n\n            if (next[0] && next[0] !== current[0]) {\n                focusTable(next.closest(\"table\"), true);\n            }\n\n            this.current(next);\n\n            return true;\n        },\n\n        _moveLeft: function(current) {\n            var prev = current.prevAll(NAVCELL).first();\n            var row = current.parent();\n            var rowIndex = row.index();\n\n            if (current.hasClass(\"k-header\") || row.is('.k-filter-row')) {\n                prev = current.prevAll(NAVHEADER).first();\n                if (!prev[0] && this.lockedTable && current.closest(\"table\")[0] === this.thead.parent()[0]) {\n                    prev = this.lockedHeader.find(\">table>thead>tr\").eq(rowIndex).children(NAVHEADER).last();\n                }\n            }\n\n            if (!prev[0] && this.lockedTable && current.closest(\"table\")[0] === this.table[0]) {\n               prev = this._relatedRow(row).children(NAVCELL).last();\n            }\n\n            if (prev[0] && prev[0] !== current[0]) {\n                focusTable(prev.closest(\"table\"), true);\n            }\n\n            this.current(prev);\n\n            return true;\n        },\n\n        _moveUp: function(current, shiftKey) {\n            var container = current.parent().parent();\n            var prev;\n\n            if (shiftKey) {\n               prev = current.parent();\n               prev = prev.prevAll(ITEMROW).first();\n               prev = current.parent().is(ITEMROW) ? prev.children().eq(current.index()) : prev.children(DATA_CELL).last();\n            } else {\n               prev = this._prevVerticalCell(container, current);\n               if (!prev[0]) {\n                  this._lastCellIndex = 0;\n                  container = this._verticalContainer(container, true);\n\n                  prev = this._prevVerticalCell(container, current);\n\n                  if (prev[0]) {\n                      focusTable(container.parent(), true);\n                  }\n               }\n            }\n\n            var tmp = this._lastCellIndex || 0;\n            this.current(prev);\n            this._lastCellIndex = tmp;\n\n            return true;\n        },\n\n        _moveDown: function(current, shiftKey) {\n            var container = current.parent().parent();\n            var next;\n\n            if (shiftKey) {\n                next = current.parent();\n                next = next.nextAll(ITEMROW).first();\n                next = current.parent().is(ITEMROW) ? next.children().eq(current.index()) : next.children(DATA_CELL).first();\n            } else {\n                next = this._nextVerticalCell(container, current);\n                if (!next[0]) {\n                    this._lastCellIndex = 0;\n                    container = this._verticalContainer(container);\n\n                    next = this._nextVerticalCell(container, current);\n                    if (next[0]) {\n                        focusTable(container.parent(), true);\n                    }\n                }\n            }\n            var tmp = this._lastCellIndex || 0;\n            this.current(next);\n            this._lastCellIndex = tmp;\n            return true;\n        },\n\n        _tableClick: function(e) {\n            var currentTarget = $(e.currentTarget),\n                isHeader = currentTarget.is(\"th\"),\n                table = this.table.add(this.lockedTable),\n                headerTable = this.thead.parent().add($(\">table\", this.lockedHeader)),\n                isInput = isInputElement(e.target),\n                currentTable = currentTarget.closest(\"table\")[0];\n\n            if (kendo.support.touch) {\n                return;\n            }\n\n            if (currentTable !== table[0] && currentTable !== table[1] && currentTable !== headerTable[0] && currentTable !== headerTable[1]) {\n                return;\n            }\n\n            if (this.options.navigatable) {\n                this.current(currentTarget);\n            }\n\n            if (isHeader || !isInput) {\n                setTimeout(function() {\n                   if (!isInputElement(kendo._activeElement()) || !$.contains(currentTable, kendo._activeElement())) {\n                       focusTable(currentTable, true);\n                   }\n                });\n            }\n\n            if (isHeader) {\n                e.preventDefault(); //if any problem occurs, call preventDefault only for the clicked header links\n            }\n        },\n\n        _setTabIndex: function(table) {\n            this._navigatableTables.attr(TABINDEX, -1);\n\n            table.attr(TABINDEX, 0);\n        },\n\n        _tableFocus: function(e) {\n            var current = this.current();\n            var table = $(e.currentTarget);\n\n            if (current && current.is(\":visible\")) {\n                current.addClass(classNames.focused);\n            } else {\n                this.current(table.find(NAVROW + \" > td:visible\").first());\n            }\n\n            this._setTabIndex(table);\n        },\n\n        _tableBlur: function() {\n            var current = this.current();\n\n            if (current) {\n                current.removeClass(classNames.focused);\n            }\n        },\n\n        _attachEvents: function() {\n            var that = this;\n            var retryButton = DOT + classNames.retry;\n\n            that._userEvents = new kendo.UserEvents(that.element, {\n                press: that._onPress.bind(that),\n                allowSelection: true\n            });\n\n            this.element\n                .on(CLICK + NS, retryButton, this._dataSourceFetchProxy)\n                .on(CLICK + NS, \".k-button[data-command]\", this._commandClick.bind(this))\n                .on(INPUT + NS, \".k-grid-search input\", this._search.bind(this));\n\n            this._attachCellEditingEventHandlers();\n        },\n\n        _onPress: function(e) {\n            var that = this;\n            var icons = DOT + classNames.iconCollapse +\n                \", .\" + classNames.iconExpand +\n                \", .\" + classNames.refresh;\n\n            if ($(e.event.target).is(icons)) {\n                that._toggleChildren.call(that, e.event);\n            }\n        },\n\n        _attachCellEditingEventHandlers: function() {\n            var that = this;\n            var editable = that.options.editable;\n            var selectable = that.selectable && that.selectable.options.multiple;\n            var closeCell = function(e) {\n                var target = activeElement();\n                var editor = that.editor || {};\n                var cell = editor.element;\n\n                if (cell && !$.contains(cell[0], target) && cell[0] !== target && !$(target).closest(\".k-animation-container\").length) {\n                    if (editor.end()) {\n                        if (!e.relatedTarget && that._isPageable() && !isUndefined(that.dataSource._addChildPageSize)) {\n                            that._preventPageSizeRestore = false;\n                        }\n\n                        that.closeCell();\n                    }\n                }\n\n                that._preventPageSizeRestore = false;\n            };\n\n            if (that._isIncellEditable() && editable.update !== false) {\n                that.wrapper\n                    .on(CLICK + NS, \"tr:not(.k-grouping-row) > td\", function(e) {\n                        var td = $(this),\n                            isLockedCell = that.lockedTable && td.closest(\"table\")[0] === that.lockedTable[0];\n\n                        if (td.hasClass(classNames.editCell) ||\n                            td.has(\"a.k-grid-delete\").length ||\n                            td.has(\"button.k-grid-delete\").length ||\n                            (td.closest(\"tbody\")[0] !== that.tbody[0] && !isLockedCell) ||\n                            $(e.target).is(\":input\") ||\n                            $(e.target).hasClass(classNames.iconExpand) ||\n                            $(e.target).hasClass(classNames.iconCollapse)) {\n\n                            if (!that.editor) {\n                                that.dataSource._restorePageSizeAfterAddChild();\n                            }\n\n                            that._preventPageSizeRestore = false;\n\n                            return;\n                        }\n\n                        if (that.editor) {\n                            if (that.editor.end()) {\n                                if (selectable) {\n                                    $(activeElement()).trigger(\"blur\");\n                                }\n                                that.closeCell();\n                                that.editCell(td);\n                            }\n                        } else {\n                            that.editCell(td);\n                        }\n                    })\n                    .on(\"mousedown\" + NS, \"tr:not(.k-grouping-row) > td\", function(e) {\n                        // cache the result on \"mousedown\", which is fired before \"focusout\" and \"click\"\n                        if (that.editor && that._isPageable() && !isUndefined(that.dataSource._addChildPageSize)) {\n                            that._preventPageSizeRestore = $(e.target).parents(DOT + classNames.editRow).length > 0;\n                        } else {\n                            that._preventPageSizeRestore = false;\n                        }\n                    })\n                    .on(\"focusin\" + NS, function() {\n                        // fix focus issue in IE\n                        if (!$.contains(this, activeElement())) {\n                            clearTimeout(that._closeCellTimeout);\n                            that._closeCellTimeout = null;\n                        }\n                    })\n                    .on(\"focusout\" + NS, function(e) {\n                        that._closeCellTimeout = setTimeout(function() {\n                            closeCell(e);\n                        }, 1);\n                    });\n            }\n        },\n\n        _commandByName: function(name) {\n            var columns = this.columns;\n            var toolbar = Array.isArray(this.options.toolbar) ? this.options.toolbar : [];\n            var i, j, commands, currentName;\n\n            name = name.toLowerCase();\n\n            if (defaultCommands[name]) {\n                return defaultCommands[name];\n            }\n\n            // command not found in defaultCommands, must be custom\n            for (i = 0; i < columns.length; i++) {\n                commands = columns[i].command;\n                if (commands) {\n                    for (j = 0; j < commands.length; j++) {\n                        currentName = commands[j].name;\n\n                        if (!currentName) {\n                            continue;\n                        }\n\n                        if (currentName.toLowerCase() == name) {\n                            return commands[j];\n                        }\n                    }\n                }\n            }\n\n            // custom command in toolbar\n            for (i = 0; i < toolbar.length; i++) {\n                currentName = toolbar[i].name;\n\n                if (!currentName) {\n                    continue;\n                }\n\n                if (currentName.toLowerCase() == name) {\n                    return toolbar[i];\n                }\n            }\n        },\n\n        _commandClick: function(e) {\n            var button = $(e.currentTarget);\n            var commandName = button.attr(\"data-command\");\n            var command = this._commandByName(commandName);\n            var row = button.parentsUntil(this.wrapper, \"tr\");\n\n            row = row.length ? row : undefined;\n\n            if (command) {\n                if (command.methodName) {\n                    this[command.methodName](row);\n                } else if (command.click) {\n                    command.click.call(this, e);\n                }\n\n                e.preventDefault();\n            }\n        },\n\n        _search: function(e) {\n            var that = this;\n            var input = e.currentTarget;\n            clearTimeout(that._searchTimeOut);\n            that._searchTimeOut = setTimeout(function() {\n                that._searchTimeOut = null;\n                var options = that.options;\n                var searchFields = options.search ? options.search.fields : null;\n                var expression = { filters: [], logic: \"or\" };\n                var value = input.value;\n\n                if (!searchFields) {\n                    searchFields = getColumnsFields(options.columns);\n                }\n\n                if (value) {\n                    for (var i = 0; i < searchFields.length; i++) {\n                        expression.filters.push({ field: searchFields[i], operator: \"contains\", value: value });\n                    }\n                } else {\n                    expression = {};\n                }\n\n                that.dataSource.filter(expression);\n\n            }, 300);\n        },\n\n        _ensureExpandableColumn: function() {\n            if (this._autoExpandable) {\n                delete this._autoExpandable.expandable;\n            }\n\n            var visibleColumns = grep(this.columns, not(is(\"hidden\")));\n            visibleColumns = grep(visibleColumns, not(is(\"command\")));\n            visibleColumns = grep(visibleColumns, not(is(\"selectable\")));\n            var expandableColumns = grep(visibleColumns, is(\"expandable\"));\n\n            if (this.columns.length && !expandableColumns.length) {\n                this._autoExpandable = visibleColumns[0];\n                visibleColumns[0].expandable = true;\n            }\n        },\n\n        _columns: function() {\n            var that = this;\n            var columns = this.options.columns || [];\n\n            this.columns = map(columns, function(column) {\n                column = (typeof column === \"string\") ? { field: column } : column;\n\n                return extend({ encoded: true }, column);\n            });\n\n            var lockedCols = lockedColumns(columns);\n            if (lockedCols.length > 0) {\n                if (this.options.rowTemplate || this.options.altRowTemplate) {\n                    throw new Error(\"Having both row template and locked columns is not supported\");\n                }\n                this._hasLockedColumns = true;\n                this.columns = lockedCols.concat(nonLockedColumns(this.columns));\n            }\n\n            this.columns = normalizeColumns(this.columns);\n\n            this._ensureExpandableColumn();\n\n            this._columnTemplates();\n            this._columnAttributes();\n\n            if ($.grep(leafColumns(that.columns), function(col) {\n                if (col.selectable) {\n                    that._includeChildren = col.includeChildren;\n                }\n                return col.selectable;\n            }).length) {\n                that._checkBoxSelection = true;\n                that.element.on(CLICK + NS, \"tbody > tr \" + CHECKBOXINPUT, that._checkboxClick.bind(that));\n                that.element.on(CLICK + NS, \"thead > tr \" + CHECKBOXINPUT, that._headerCheckboxClick.bind(that));\n            }\n        },\n\n        _columnTemplates: function() {\n            var idx, length, column;\n            var columns = leafColumns(this.columns);\n\n            for (idx = 0, length = columns.length; idx < length; idx++) {\n                column = columns[idx];\n                if (column.template) {\n                    column.template = kendo.template(column.template);\n                }\n\n                if (this._isIncellEditable()) {\n                    column.dirtyCellTemplate = this._createDirtyColumnTemplate(column);\n                    column.dirtyIndicatorTemplate = this._createIndicatorTemplate(column);\n                }\n\n                if (column.headerTemplate) {\n                    column.headerTemplate = kendo.template(column.headerTemplate);\n                }\n\n                if (column.footerTemplate) {\n                    column.footerTemplate = kendo.template(column.footerTemplate);\n                }\n            }\n        },\n\n        _columnAttributes: function() {\n            // column style attribute is string, kendo.dom expects object\n            var idx, length;\n            var columns = this.columns;\n\n            function convertStyle(attr) {\n                var properties, i, declaration;\n\n                if (attr && attr.style && attr.style.split) {\n                    properties = attr.style.split(\";\");\n                    attr.style = {};\n\n                    for (i = 0; i < properties.length; i++) {\n                        declaration = properties[i].split(\":\");\n\n                        var name = kendo.trim(declaration[0]);\n\n                        if (name) {\n                            attr.style[$.camelCase(name)] = kendo.trim(declaration[1]);\n                        }\n                    }\n                }\n            }\n\n            for (idx = 0, length = columns.length; idx < length; idx++) {\n                convertStyle(columns[idx].attributes);\n                convertStyle(columns[idx].headerAttributes);\n            }\n        },\n\n        _clearSortClasses: function() {\n            var that = this;\n\n            if (that.content) {\n                that.content.find(\"col:not(.k-group-col):not(.k-hierarchy-col)\").removeClass(\"k-sorted\");\n            }\n\n            if (that.lockedContent) {\n                that.lockedContent.find(\"col:not(.k-group-col):not(.k-hierarchy-col)\").removeClass(\"k-sorted\");\n            }\n        },\n\n        _layout: function() {\n            var columns = this.columns;\n            var element = this.element;\n            var layout = \"\";\n\n            this.wrapper = element.addClass(classNames.wrapper);\n\n            layout = \"<div class='#= gridHeader #'>\";\n\n            if (this._hasLockedColumns) {\n                layout += \"<div class='k-grid-header-locked'>\" +\n                                \"<table role='grid'>\" +\n                                    \"<colgroup></colgroup>\" +\n                                    \"<thead role='rowgroup'></thead>\" +\n                                \"</table>\" +\n                            \"</div>\";\n            }\n\n            layout += \"<div class='#= gridHeaderWrap #'>\" +\n                            \"<table role='grid'>\" +\n                                \"<colgroup></colgroup>\" +\n                                \"<thead role='rowgroup'></thead>\" +\n                            \"</table>\" +\n                        \"</div>\" +\n                        \"</div>\";\n\n            if (this._hasLockedColumns) {\n                layout += \"<div class='k-grid-content-locked'>\" +\n                                \"<table role='treegrid' tabindex='0'>\" +\n                                    \"<colgroup></colgroup>\" +\n                                    \"<tbody></tbody>\" +\n                                \"</table>\" +\n                            \"</div>\";\n            }\n\n            layout += \"<div class='#= gridContentWrap # k-auto-scrollable'>\" +\n                            \"<table role='treegrid' tabindex='0'>\" +\n                                \"<colgroup></colgroup>\" +\n                                \"<tbody></tbody>\" +\n                            \"</table>\" +\n                        \"</div>\";\n\n            if (!this.options.scrollable) {\n                layout =\n                    \"<table role='treegrid' tabindex='0'>\" +\n                        \"<colgroup></colgroup>\" +\n                        \"<thead class='#= gridHeader #' role='rowgroup'></thead>\" +\n                        \"<tbody></tbody>\" +\n                    \"</table>\";\n            }\n\n            if (this.options.toolbar) {\n                layout = \"<div class='#= toolbar # #= gridToolbar #'></div>\" + layout;\n            }\n\n            element.append(\n                kendo.template(layout)(classNames) +\n                \"<div class='k-status' role='alert' aria-live='polite'></div>\"\n            );\n\n            this.toolbar = element.find(DOT + classNames.gridToolbar);\n\n            var header = element.find(DOT + classNames.gridHeader).find(\"thead\").addBack().filter(\"thead\");\n            this.thead = header.last();\n\n            if (this.options.scrollable) {\n                var rtl = kendo.support.isRtl(element);\n\n                element.find(\"div.\" + classNames.gridHeader)\n                    .css(rtl ? \"padding-left\" : \"padding-right\", kendo.support.scrollbar());\n            }\n\n\n            var content = element.find(DOT + classNames.gridContentWrap);\n            if (!content.length) {\n                content = element;\n            } else {\n                this.content = content;\n            }\n\n            this.table = content.find(\">table\");\n            this.tbody = this.table.find(\">tbody\");\n\n            if (this._hasLockedColumns) {\n                this.lockedHeader = header.first().closest(\".k-grid-header-locked\");\n                this.lockedContent = element.find(\".k-grid-content-locked\");\n                this.lockedTable = this.lockedContent.children();\n            }\n\n            this._initVirtualTrees();\n\n            this._renderCols();\n            this._renderHeader();\n\n            this.angular(\"compile\", function() {\n                return {\n                    elements: header.find(\"th.k-header\").get(),\n                    data: map(columns, function(col) { return { column: col }; })\n                };\n            });\n        },\n\n        _initVirtualTrees: function() {\n            this._headerColsTree = new kendoDom.Tree(this.thead.prev()[0]);\n            this._contentColsTree = new kendoDom.Tree(this.tbody.prev()[0]);\n            this._headerTree = new kendoDom.Tree(this.thead[0]);\n            this._contentTree = new kendoDom.Tree(this.tbody[0]);\n            this._statusTree = new kendoDom.Tree(this.element.children(\".k-status\")[0]);\n\n            if (this.lockedHeader) {\n                this._lockedHeaderColsTree = new kendoDom.Tree(this.lockedHeader.find(\"colgroup\")[0]);\n                this._lockedContentColsTree = new kendoDom.Tree(this.lockedTable.find(\">colgroup\")[0]);\n                this._lockedHeaderTree = new kendoDom.Tree(this.lockedHeader.find(\"thead\")[0]);\n                this._lockedContentTree = new kendoDom.Tree(this.lockedTable.find(\">tbody\")[0]);\n            }\n        },\n\n        _toolbar: function() {\n            var options = this.options.toolbar;\n            var toolbar = this.toolbar;\n\n            if (!options) {\n                return;\n            }\n\n            if (Array.isArray(options)) {\n                var buttons = this._buildCommands(options);\n                new kendoDom.Tree(toolbar[0]).render(buttons);\n            } else {\n                toolbar.append(kendo.template(options)({}));\n            }\n\n            this.angular(\"compile\", function() {\n                return { elements: toolbar.get() };\n            });\n        },\n\n        _lockedColumns: function() {\n            return grep(this.columns, is(\"locked\"));\n        },\n\n        _nonLockedColumns: function() {\n            return grep(this.columns, not(is(\"locked\")));\n        },\n\n        _templateColumns: function() {\n            return grep(this.columns, is(\"template\"));\n        },\n\n        _flushCache: function() {\n            if (this.options.$angular && this._templateColumns().length) {\n                this._contentTree.render([]);\n                if (this._hasLockedColumns) {\n                    this._lockedContentTree.render([]);\n                }\n            }\n        },\n\n        _render: function(options) {\n            var that = this;\n            options = options || {};\n            options = that._renderOptions(options);\n            var messages = this.options.messages;\n            var pageable = that._isPageable();\n            var dataSource = that.dataSource;\n\n            var maps = { children: (options.filteredChildrenMap || options.childrenMap), ids: options.idsMap };\n            var dataMaps = pageable ? (maps && maps.children && maps.ids ? maps : dataSource._initDataMaps(dataSource._getData())) : {};\n            var childrenMap = dataMaps.children;\n            var idsMap = dataMaps.ids;\n            options.childrenMap = childrenMap;\n            options.idsMap = idsMap;\n\n            var data = that._dataToRender(options);\n            var level = that._renderedModelLevel(data[0], options);\n            var uidAttr = kendo.attr(\"uid\");\n            var hasFooterTemplate;\n            var selected = this.select().removeClass(\"k-selected\").map(function(_, row) {\n                return $(row).attr(uidAttr);\n            });\n            var viewChildrenMap;\n\n            this._absoluteIndex = 0;\n\n            this._angularItems(\"cleanup\");\n            this._angularFooters(\"cleanup\");\n            this._flushCache();\n\n            that._clearRenderMap();\n\n            if (options.error) {\n                // root-level error message\n                this._showStatus(kendo.template(\n                    \"#: messages.requestFailed # \" +\n                    \"<button class='#= buttonClass # k-button-md k-rounded-md k-button-solid k-button-solid-base'><span class='k-button-text'>#: messages.retry #</span></button>\"\n                )({\n                    buttonClass: [classNames.button, classNames.retry].join(\" \"),\n                    messages: messages\n                }));\n            } else if (!data.length) {\n                // no rows message\n                this._hideStatus();\n                this._showNoRecordsTemplate();\n            } else {\n                if (pageable) {\n                    viewChildrenMap = that._viewChildrenMap(options);\n                }\n\n                // render rows\n                this._hideStatus();\n\n                hasFooterTemplate = this._hasFooterTemplate();\n\n                this._contentTree.render(this._trs({\n                    columns: leafColumns(nonLockedColumns(this.columns)),\n                    editedColumn: options.editedColumn,\n                    editedColumnIndex: options.editedColumnIndex,\n                    aggregates: options.aggregates,\n                    selected: selected,\n                    data: data,\n                    childrenMap: childrenMap,\n                    viewChildrenMap: viewChildrenMap,\n                    hasFooterTemplate: hasFooterTemplate,\n                    visible: true,\n                    level: 0\n                }));\n\n                if (this._hasLockedColumns) {\n                    this._absoluteIndex = 0;\n                    this._lockedContentTree.render(this._trs({\n                        columns: leafColumns(lockedColumns(this.columns)),\n                        editedColumn: options.editedColumn,\n                        editedColumnIndex: options.editedColumnIndex,\n                        aggregates: options.aggregates,\n                        selected: selected,\n                        data: data,\n                        childrenMap: childrenMap,\n                        viewChildrenMap: viewChildrenMap,\n                        hasFooterTemplate: hasFooterTemplate,\n                        visible: true,\n                        level: level\n                    }));\n                }\n            }\n\n            if (this._touchScroller) {\n                this._touchScroller.contentResized();\n            }\n\n            this._muteAngularRebind(function() {\n                this._angularItems(\"compile\");\n                this._angularFooters(\"compile\");\n            });\n\n            this.items().filter(function() {\n                return $.inArray($(this).attr(uidAttr), selected) >= 0;\n            })\n            .addClass(\"k-selected\");\n\n            this._syncLockedContentHeight();\n\n            that._togglePagerVisibility();\n\n            that._setExpanderElement();\n        },\n\n        _setExpanderElement: function() {\n            var that = this,\n                hiddenDivClass = 'k-grid-content-expander',\n                hiddenDiv = '<div class=\"' + hiddenDivClass + '\"></div>',\n                expander;\n\n            if (that.options.scrollable && that.wrapper.is(\":visible\")) {\n                expander = that.table.parent().children('.' + hiddenDivClass);\n                if (!that.dataSource || !that.dataSource.view().length) {\n                    if (!expander[0]) {\n                        expander = $(hiddenDiv).appendTo(that.table.parent());\n                    }\n                    if (that.thead) {\n                        expander.width(that.thead.width());\n                    }\n                } else if (expander[0]) {\n                    expander.remove();\n                }\n            }\n        },\n\n        _renderProgress: function(toggle) {\n            kendo.ui.progress(this.wrapper, toggle);\n        },\n\n        _renderOptions: function(options) {\n            options = options || {};\n            var that = this;\n            var dataMaps = that.dataSource._getDataMaps();\n            var filter = that.dataSource.filter();\n\n            if (that._isPageable()) {\n                options.childrenMap = dataMaps.children;\n                options.idsMap = dataMaps.ids;\n\n                if (filter) {\n                    options.filteredChildrenMap = dataMaps.filteredChildren;\n                }\n            }\n\n            return options;\n        },\n\n        _renderedModelLevel: function(model, options) {\n            return !this._isPageable() ? 0 : this.dataSource._pageableModelLevel(model, options);\n        },\n\n        _viewChildrenMap: function(options) {\n            options = options || {};\n            var that = this;\n            var dataSource = that.dataSource;\n            var viewChildrenMap = dataSource.childrenMap(dataSource.view());\n            var idField = dataSource._modelIdField();\n            var parentsNotInView = dataSource._parentNodesNotInView();\n            var parentNotInView;\n            var parentNotInViewId;\n            var parents;\n            var parent;\n            var parentId;\n            var child;\n            var childId;\n            var parentsCopy;\n\n            that._clearRenderMap();\n\n            for (var i = 0; i < parentsNotInView.length; i++) {\n                parentNotInView = parentsNotInView[i];\n                parentNotInViewId = parentNotInView[idField];\n\n                that._markNodeAsNonRenderable(parentNotInViewId);\n\n                viewChildrenMap[parentNotInViewId] = viewChildrenMap[parentNotInViewId] || [];\n\n                parents = dataSource._parentNodes(parentNotInView);\n\n                // copy the items to avoid mutating the original collection\n                parentsCopy = parents.slice();\n                parentsCopy.push(parentNotInView);\n\n                for (var parentIndex = 0; parentIndex < parentsCopy.length - 1; parentIndex++) {\n                    parent = parentsCopy[parentIndex];\n                    parentId = parent[idField];\n                    that._markNodeAsNonRenderable(parentId);\n                    viewChildrenMap[parentId] = viewChildrenMap[parentId] || [];\n\n                    child = parentsCopy[parentIndex + 1];\n                    childId = child[idField];\n                    that._markNodeAsNonRenderable(childId);\n                    viewChildrenMap[childId] = viewChildrenMap[childId] || [];\n\n                    if (viewChildrenMap[parentId].indexOf(child) === -1) {\n                        viewChildrenMap[parentId].unshift(child);\n                    }\n                }\n            }\n\n            return viewChildrenMap;\n        },\n\n        _clearRenderMap: function() {\n            this._skipRenderingMap = {};\n        },\n\n        _dataToRender: function(options) {\n            var that = this;\n\n            if (that._isPageable()) {\n                return that.dataSource._pageableRootNodes(options);\n            }\n\n            return that.dataSource.rootNodes();\n        },\n\n        _markNodeAsNonRenderable: function(nodeId) {\n            this._skipRenderingMap[nodeId] = true;\n        },\n\n        _adjustRowsHeight: function(table1, table2) {\n            if (!this._hasLockedColumns) {\n                return;\n            }\n\n            var rows = table1[0].rows;\n            var length = rows.length;\n            var idx;\n            var rows2 = table2[0].rows;\n            var containers = table1.add(table2);\n            var containersLength = containers.length;\n            var heights = [];\n\n            for (idx = 0; idx < length; idx++) {\n                if (!rows2[idx]) {\n                    break;\n                }\n\n                if (rows[idx].style.height) {\n                    rows[idx].style.height = rows2[idx].style.height = \"\";\n                }\n            }\n\n            for (idx = 0; idx < length; idx++) {\n                if (!rows2[idx]) {\n                    break;\n                }\n\n                var offsetHeight1 = rows[idx].offsetHeight;\n                var offsetHeight2 = rows2[idx].offsetHeight;\n                var height = 0;\n\n                if (offsetHeight1 > offsetHeight2) {\n                    height = offsetHeight1;\n                } else if (offsetHeight1 < offsetHeight2) {\n                    height = offsetHeight2;\n                }\n\n                heights.push(height);\n            }\n\n            for (idx = 0; idx < containersLength; idx++) {\n                containers[idx].style.display = \"none\";\n            }\n\n            for (idx = 0; idx < length; idx++) {\n                if (heights[idx]) {\n                    //add one to resolve row misalignment in IE\n                    rows[idx].style.height = rows2[idx].style.height = (heights[idx] + 1) + \"px\";\n                }\n            }\n\n            for (idx = 0; idx < containersLength; idx++) {\n                containers[idx].style.display = \"\";\n            }\n        },\n\n        _ths: function(columns, rowSpan) {\n            var ths = [];\n            var column, title, children, cellClasses, attr, headerContent;\n            var index;\n            var leafs;\n\n            for (var i = 0, length = columns.length; i < length; i++) {\n                column = columns[i];\n                children = [];\n                cellClasses = [classNames.header];\n\n                if (column.selectable) {\n                    leafs = leafColumns(columns);\n                    index = inArray(column, leafs);\n                    attr = {\n                        scope: \"col\",\n                        role: \"columnheader\",\n                        className: cellClasses.join(\" \")\n                    };\n\n                    if (column.headerTemplate) {\n                        title = column.headerTemplate({});\n                    }\n\n                    title = column.headerTemplate ? title : kendo.template(SELECTCOLUMNHEADERTMPL)({});\n\n\n                    if (rowSpan && !column.colSpan) {\n                        attr.rowSpan = rowSpan;\n                    }\n\n                    if (index > -1) {\n                        attr[kendo.attr(\"index\")] = index;\n                    }\n\n                    children.push(kendoHtmlElement(title));\n\n                    ths.push(kendoDomElement(\"th\", $.extend(true, {}, attr, column.headerAttributes), children));\n                    continue;\n                }\n\n                if (column.headerTemplate) {\n                    title = column.headerTemplate({});\n                } else {\n                    title = column.title || column.field || \"\";\n                }\n\n                if (column.headerTemplate) {\n                    headerContent = kendoHtmlElement(title);\n                } else {\n                    headerContent = kendoTextElement(title);\n                }\n\n                if (this.options.sortable) {\n                    children.push(kendoDomElement(\"span\", { className: classNames.headerCellInner }, [\n                        kendoDomElement(\"span\", { className: classNames.link }, [\n                            kendoDomElement(\"span\", { className: classNames.columnTitle }, [\n                                headerContent\n                            ])\n                        ])\n                    ]));\n                } else {\n                    children.push(headerContent);\n                }\n\n                attr = {\n                    \"data-field\": column.field,\n                    \"data-title\": column.title,\n                    \"style\": column.hidden === true ? { \"display\": \"none\" } : {},\n                    className: cellClasses.join(\" \"),\n                    \"role\": \"columnheader\"\n                };\n\n                if (!column.columns) {\n                    attr.rowSpan = rowSpan ? rowSpan : 1;\n                }\n\n                if (column.headerAttributes) {\n                    if (column.headerAttributes.colSpan === 1) {\n                        delete column.headerAttributes.colSpan;\n                    }\n                    if (column.headerAttributes[\"class\"]) {\n                        attr.className += \" \" + column.headerAttributes[\"class\"];\n                        delete column.headerAttributes[\"class\"];\n                    }\n                }\n\n                if (column[\"data-index\"] > -1) {\n                    attr[\"data-index\"] = column[\"data-index\"];\n                }\n\n                attr = extend(true, {}, attr, column.headerAttributes);\n\n                ths.push(kendoDomElement(\"th\", attr, children));\n            }\n\n            return ths;\n        },\n\n        _cols: function(columns) {\n            var cols = [];\n            var width, attr;\n\n            for (var i = 0; i < columns.length; i++) {\n                if (columns[i].hidden === true) {\n                    continue;\n                }\n\n                width = columns[i].width;\n                attr = {};\n\n                if (width && parseInt(width, 10) !== 0) {\n                    attr.style = {\n                        width: typeof width === \"string\" ? width : width + \"px\"\n                    };\n                }\n\n                cols.push(kendoDomElement(\"col\", attr));\n            }\n\n            return cols;\n        },\n\n        _clearColsCache: function() {\n            this._headerColsTree.render([]);\n            if (this.options.scrollable) {\n                this._contentColsTree.render([]);\n            }\n            if (this._hasLockedColumns) {\n                this._lockedHeaderColsTree.render([]);\n                this._lockedContentColsTree.render([]);\n            }\n        },\n\n        _renderCols: function() {\n            var columns = nonLockedColumns(this.columns);\n            this._headerColsTree.render(this._cols(leafColumns(columns)));\n\n            if (this.options.scrollable) {\n                this._contentColsTree.render(this._cols(leafColumns(columns)));\n            }\n\n            if (this._hasLockedColumns) {\n                columns = lockedColumns(this.columns);\n                this._lockedHeaderColsTree.render(this._cols(leafColumns(columns)));\n                this._lockedContentColsTree.render(this._cols(leafColumns(columns)));\n            }\n        },\n\n        _retrieveFirstColumn: function(columns, rows) {\n            var result = $();\n\n            if (rows.length && columns[0]) {\n                var column = columns[0];\n\n                while (column.columns && column.columns.length) {\n                    column = column.columns[0];\n                    rows = rows.filter(\":not(:first)\");\n                }\n\n                result = result.add(rows);\n            }\n\n            return result;\n        },\n\n        _updateFirstColumnClass: function() {\n            var that = this;\n            var columns = that.columns || [];\n            var tr = that.thead.find(\">tr:not(:first, .k-filter-row)\");\n            var rows;\n\n            columns = nonLockedColumns(columns);\n\n            rows = that._retrieveFirstColumn(columns, tr);\n\n            if (that.lockedHeader) {\n                tr = that.lockedHeader.find(\"thead>tr:not(.k-filter-row):not(:first)\");\n                columns = lockedColumns(that.columns);\n\n                rows = rows.add(that._retrieveFirstColumn(columns, tr));\n            }\n\n            rows.each(function() {\n                var ths = $(this).find(\"th\");\n                ths.removeClass(\"k-first\");\n                ths.eq(0).addClass(\"k-first\");\n            });\n        },\n\n        _updateRowSpans: function(rows) {\n            for (var i = rows.length - 1; i >= 0; i--) {\n                var included = visibleChildColumns(rows[i].cells).length > 0;\n\n                if (included) {\n                    rows[i].rowSpan = rows.length - i;\n                }\n            }\n        },\n\n        _setColumnDataIndexes: function(columns) {\n            for (var i = 0; i < columns.length; i++) {\n               columns[i][\"data-index\"] = i;\n            }\n        },\n\n        _updateColumnCellIndex: function() {\n            var header;\n            var offset = 0;\n\n            if (this.lockedHeader) {\n                header = this.lockedHeader.find(\"thead\");\n                offset = updateCellIndex(header, lockedColumns(this.columns));\n            }\n            updateCellIndex(this.thead, nonLockedColumns(this.columns), offset);\n        },\n\n        _setParentsVisibility: function(column, visible) {\n            var columns = this.columns;\n            var idx;\n            var parents = [];\n            var parent;\n\n            var predicate = visible ?\n                function(p) { return visibleColumns(p.columns).length && p.hidden; } :\n                function(p) { return !visibleColumns(p.columns).length && !p.hidden; };\n\n\n            if (columnParents(column, columns, parents) && parents.length) {\n                for (idx = parents.length - 1; idx >= 0; idx--) {\n                    parent = parents[idx];\n\n                    if (predicate(parent)) {\n                        parent.hidden = !visible;\n                    }\n                }\n            }\n        },\n\n        _prepareColumns: function(rows, columns, parentCell, parentRow, parentColumn) {\n            var row = parentRow || rows[rows.length - 1];\n\n            var childRow = rows[row.index + 1];\n            var totalColSpan = 0;\n\n            for (var idx = 0; idx < columns.length; idx++) {\n                var cell = $.extend({}, columns[idx], { headerAttributes: columns[idx].headerAttributes || {} } );\n                row.cells.push(cell);\n\n                if (columns[idx].columns && columns[idx].columns.length) {\n                    if (!childRow) {\n                        childRow = { rowSpan: 0, cells: [], index: rows.length };\n                        rows.push(childRow);\n                    }\n                    if (columns[idx].columns.length) {\n                        cell.headerAttributes.colSpan = visibleChildColumns(columns[idx].columns).length || 1;\n                        cell.headerAttributes[\"data-colspan\"] = leafColumns(columns[idx].columns).length;\n                    }\n                    this._prepareColumns(rows, columns[idx].columns, cell, childRow, columns[idx]);\n                    if (!cell.hidden) {\n                        totalColSpan += cell.headerAttributes.colSpan - 1;\n                    }\n                    row.rowSpan = rows.length - row.index;\n                }\n                columns[idx].rowIndex = row.index;\n                if (parentColumn) {\n                    columns[idx].parentColumn = parentColumn;\n                }\n                columns[idx].cellIndex = row.cells.length - 1;\n            }\n            if (parentCell) {\n                parentCell.headerAttributes.colSpan += totalColSpan;\n            }\n        },\n\n        _renderHeaderTree: function(tree, columns, hasMultiColumnHeaders) {\n            var idx;\n            var rows = [];\n            var rowsToRender = [];\n            var filterThs = [];\n\n            if (hasMultiColumnHeaders) {\n                rows = [{ rowSpan: 1, cells: [], index: 0 }];\n                this._prepareColumns(rows, columns);\n                this._updateRowSpans(rows);\n                for (idx = 0; idx < rows.length; idx++) {\n                    rowsToRender.push(kendoDomElement(\"tr\", { \"role\": \"row\" }, this._ths(rows[idx].cells, rows[idx].rowSpan)));\n                }\n            } else {\n                rowsToRender.push(kendoDomElement(\"tr\", { \"role\": \"row\" }, this._ths(columns)));\n            }\n\n            if (this._hasFilterRow()) {\n                this._filterThs(columns, filterThs);\n                rowsToRender.push(kendoDomElement(\"tr\", { \"class\": \"k-filter-row\" }, filterThs));\n            }\n\n            tree.render(rowsToRender);\n        },\n\n        _renderHeader: function() {\n            var columns = nonLockedColumns(this.columns);\n            var hasMultiColumnHeaders = grep(this.columns, function(item) {\n                return item.columns !== undefined;\n            }).length > 0;\n            this._setColumnDataIndexes(leafColumns(this.columns));\n            this._renderHeaderTree(this._headerTree, columns, hasMultiColumnHeaders);\n\n            if (this._hasLockedColumns) {\n                columns = lockedColumns(this.columns);\n                this._renderHeaderTree(this._lockedHeaderTree, columns, hasMultiColumnHeaders);\n\n                this._applyLockedContainersWidth();\n                this._syncLockedHeaderHeight();\n            }\n            this._updateFirstColumnClass();\n        },\n\n        _filterThs: function(columns, ths) {\n            var column;\n            var attr;\n            var uidAttr = kendo.attr('uid');\n\n            for (var i = 0, length = columns.length; i < length; i++) {\n                column = columns[i];\n\n                if (column.columns) {\n                    this._filterThs(column.columns, ths);\n                }\n\n                if (column.columns && column.columns.length) {\n                    continue;\n                }\n\n                attr = {\n                    \"style\": column.hidden === true ? { \"display\": \"none\" } : {}\n                };\n                attr[uidAttr] = column.headerAttributes.id;\n                ths.push(kendoDomElement(\"th\", attr));\n            }\n        },\n\n        _updateFilterThs: function(before, column, refColumn) {\n            var columns = leafColumns([column]);\n            var filterRowThs = $(this.lockedHeader).add(this.thead).find(\"tr.k-filter-row th\");\n            var refIndex;\n            var currIndex;\n            var uidAttr = kendo.attr('uid');\n\n            function thIndex(ths, uid) {\n                for (var i = 0; i < ths.length; i++) {\n                    if (ths.eq(i).attr(uidAttr) === uid) {\n                        return i;\n                    }\n                }\n            }\n\n            for (var i = columns.length - 1; i >= 0; i--) {\n                column = columns[i];\n                currIndex = thIndex(filterRowThs, column.headerAttributes.id);\n                refIndex = thIndex(filterRowThs, refColumn.headerAttributes.id);\n                filterRowThs.eq(currIndex)[before ? \"insertBefore\" : \"insertAfter\"](filterRowThs.eq(refIndex));\n            }\n        },\n\n        _applyLockedContainersWidth: function() {\n            if (!this._hasLockedColumns) {\n                return;\n            }\n\n            var lockedWidth = columnsWidth(this.lockedHeader.find(\">table>colgroup>col\"));\n\n            var headerTable = this.thead.parent();\n            var nonLockedWidth = columnsWidth(headerTable.find(\">colgroup>col\"));\n\n            var wrapperWidth = this.wrapper[0].clientWidth;\n            var scrollbar = kendo.support.scrollbar();\n\n            if (lockedWidth >= wrapperWidth) {\n                lockedWidth = wrapperWidth - 3 * scrollbar;\n            }\n\n            this.lockedHeader\n                .add(this.lockedContent)\n                .width(lockedWidth);\n\n            headerTable.add(this.table).width(nonLockedWidth);\n\n            var width = wrapperWidth - lockedWidth;\n            this.content.width(width - 1);\n            headerTable.parent().width(width - scrollbar - 2);\n        },\n\n        _trs: function(options) {\n            var that = this;\n            var model, attr, className, hasChildren, childNodes, i, length;\n            var modelId;\n            var rows = [];\n            var level = options.level;\n            var data = options.data;\n            var dataSource = this.dataSource;\n            var aggregates = dataSource.aggregates() || {};\n            var idField = dataSource._modelIdField();\n            var parentIdField = dataSource._modelParentIdField();\n            var columns = options.columns;\n            var pageable = that._isPageable();\n            var childrenMap = options.childrenMap || dataSource.childrenMap(dataSource._getData());\n\n            for (i = 0, length = data.length; i < length; i++) {\n                className = [];\n\n                model = data[i];\n                modelId = model[idField];\n\n                childNodes = pageable ? childrenMap[modelId] : (model.loaded() ? dataSource.childNodes(model) : []);\n                hasChildren = childNodes && childNodes.length;\n\n                attr = { \"role\": \"row\" };\n\n                attr[kendo.attr(\"uid\")] = model.uid;\n\n                if (hasChildren) {\n                    attr[\"aria-expanded\"] = !!model.expanded;\n                }\n\n                if (options.visible) {\n                    if (!pageable || (pageable && !that._skipRenderingMap[modelId])) {\n                        if (this._absoluteIndex % 2 !== 0) {\n                            className.push(classNames.alt);\n                        }\n\n                        this._absoluteIndex++;\n                    }\n                } else {\n                    attr.style = { display: \"none\" };\n                }\n\n                if ($.inArray(model.uid, options.selected) >= 0) {\n                    className.push(classNames.selected);\n                }\n\n                if (hasChildren) {\n                    className.push(classNames.group);\n                }\n\n                if (model._edit) {\n                    className.push(\"k-grid-edit-row\");\n                }\n\n                attr.className = className.join(\" \");\n\n                if (!that._skipRenderingMap[modelId]) {\n                    var row;\n                    var rowOptions = {\n                        model: model,\n                        attr: attr,\n                        level: pageable ? that._renderedModelLevel(model, options) : level,\n                        editedColumn: options.editedColumn,\n                        editedColumnIndex: options.editedColumnIndex,\n                        hasChildren: hasChildren,\n                        visible: options.visible,\n                        isAlt: this._absoluteIndex % 2 === 0\n                    };\n\n                    if (that.options.rowTemplate) {\n                        row = this. _trFromTemplate(rowOptions);\n                    } else {\n                        row = this._tds(rowOptions, columns, this._td.bind(this));\n                    }\n\n                    rows.push(row);\n                }\n\n\n                if (hasChildren && (that.options.renderAllRows || !!model.expanded)) {\n                    if (pageable) {\n                        // render the child nodes in the paged view only\n                        childNodes = (options.viewChildrenMap || {})[modelId] || [];\n                    }\n\n                    if (childNodes.length === 0) {\n                        continue;\n                    }\n\n                    rows = rows.concat(this._trs({\n                        columns: columns,\n                        editedColumn: options.editedColumn,\n                        editedColumnIndex: options.editedColumnIndex,\n                        aggregates: aggregates,\n                        selected: options.selected,\n                        visible: pageable ? options.visible : (options.visible && !!model.expanded),\n                        data: childNodes,\n                        childrenMap: options.childrenMap || childrenMap,\n                        hasFooterTemplate: options.hasFooterTemplate,\n                        viewChildrenMap: options.viewChildrenMap,\n                        level: level + 1\n                    }));\n                }\n            }\n\n            if (options.hasFooterTemplate && model) {\n                attr = {\n                    className: classNames.footerTemplate,\n                    \"data-parentId\": model[parentIdField]\n                };\n\n                if (!options.visible) {\n                    attr.style = { display: \"none\" };\n                }\n\n                rows.push(this._tds({\n                    model: aggregates[model[parentIdField]],\n                    attr: attr,\n                    level: level,\n                    editedColumn: options.editedColumn,\n                    editedColumnIndex: options.editedColumnIndex\n                }, columns, this._footerId));\n            }\n\n            return rows;\n        },\n\n        _trFromTemplate: function(options) {\n            var rowTemplate = this.options.rowTemplate;\n            var altRowTemplate = this.options.altRowTemplate;\n            var row;\n            var template;\n\n            altRowTemplate = altRowTemplate ? altRowTemplate : rowTemplate;\n\n            if (!kendo.isFunction(rowTemplate)) {\n                rowTemplate = kendo.template(rowTemplate);\n            }\n\n            if (!kendo.isFunction(altRowTemplate)) {\n                altRowTemplate = kendo.template(altRowTemplate);\n            }\n\n            if (this._absoluteIndex % 2 !== 0) {\n                template = rowTemplate(options);\n            } else {\n                template = altRowTemplate(options);\n            }\n\n            if (!$(template).length) {\n                return kendoTextElement(template);\n            }\n\n            row = this.parseRowTemplate($(template)[0], options);\n\n            return row;\n        },\n\n        parseRowTemplate: function(element, options) {\n            var nodeName = element.nodeName.toLocaleLowerCase();\n            var childNodes = element.childNodes;\n            var children = [];\n            var currElement;\n            var attributes;\n\n            attributes = this.parseAttributes(element);\n\n            for (var i = 0; i < childNodes.length; i++) {\n                if (!/\\S/.test(childNodes[i].nodeValue)) {\n                   continue;\n                }\n                if (childNodes[i].nodeName.toLocaleLowerCase() === \"td\") {\n                    children.push(this._createCellElement(childNodes[i]));\n                }\n            }\n\n            if (options && !options.visible) {\n               attributes.style = attributes.style || {};\n               attributes.style = $.extend(true, attributes.style, { display: \"none\" });\n            }\n\n            if (this._isTextNode(nodeName)) {\n                currElement = kendoTextElement(element.nodeValue);\n            } else {\n                currElement = kendoDomElement(nodeName, attributes, children);\n            }\n\n            return currElement;\n        },\n\n        _createCellElement: function(element) {\n            var attributes = this.parseAttributes(element);\n            var spaceElements = $(element).find('.' + classNames.iconHidden).remove();\n            var iconElement = $(element).find('.' + classNames.iconExpand + ',.' + classNames.iconCollapse).remove()[0];\n            var children = [];\n\n            for (var i = 0; i < spaceElements.length; i++) {\n                children.push(kendoDomElement(\"span\", this.parseAttributes(spaceElements[i])));\n            }\n\n            if (iconElement) {\n                children.push(kendoDomElement(\"span\", this.parseAttributes(iconElement)));\n            }\n            children.push(kendoHtmlElement($(element).html()));\n\n            return kendoDomElement(\"td\", attributes, children);\n        },\n\n        parseAttributes: function(element) {\n            if (this._isTextNode(element.nodeName)) {\n                return null;\n            }\n\n            element = $(element)[0];\n            var attributes = element.attributes;\n            var length = attributes.length;\n            var result = {};\n\n            for (var i = 0; i < length; i++) {\n                result[attributes[i].name] = attributes[i].value;\n            }\n\n            return result;\n        },\n\n        _isTextNode: function(nodeName) {\n            return nodeName.indexOf('text') >= 0;\n        },\n\n        _footerId: function(options) {\n            var content = [];\n            var column = options.column;\n            var template = options.column.footerTemplate || $.noop;\n            var aggregates = options.model[column.field] || {};\n            var attr = {\n                \"role\": \"gridcell\",\n                \"style\": column.hidden === true ? { \"display\": \"none\" } : {}\n            };\n\n            if (column.expandable) {\n                content = content.concat(createPlaceholders({\n\n                    level: options.level + 1,\n                    className: classNames.iconPlaceHolder\n                }));\n            }\n\n            if (column.attributes) {\n                extend(true, attr, column.attributes, {\n                    \"style\": column.hidden === true ? { \"display\": \"none\" } : {}\n                });\n            }\n\n            content.push(kendoHtmlElement(template(aggregates) || \"\"));\n\n            return kendoDomElement(\"td\", attr, content);\n        },\n\n        _hasFooterTemplate: function() {\n            return !!grep(leafColumns(this.columns), function(c) {\n                return c.footerTemplate;\n            }).length;\n        },\n\n        _tds: function(options, columns, renderer) {\n            var children = [];\n            var column;\n            var editedColumnField = (options.editedColumn || {}).field;\n            var incellEditing = this._isIncellEditable();\n            var length = columns.length;\n\n            for (var i = 0; i < length; i++) {\n                column = columns[i];\n\n                var col = renderer({\n                    model: options.model,\n                    column: column,\n                    editColumn: !incellEditing || (incellEditing && column.field === editedColumnField && options.editedColumnIndex === i),\n                    level: options.level\n                });\n\n                children.push(col);\n            }\n\n            return kendoDomElement(\"tr\", options.attr, children);\n        },\n\n        _td: function(options) {\n            var children = [];\n            var model = options.model;\n            var column = options.column;\n            var iconClass;\n            var attr = {\n                \"role\": \"gridcell\",\n                \"style\": column.hidden === true ? { \"display\": \"none\" } : {}\n            };\n            var incellEditing = this._isIncellEditable();\n            var columnHasEditCommand = false;\n\n            if (column.attributes) {\n                extend(true, attr, column.attributes);\n            }\n\n            if (!!column.headerAttributes && !!column.headerAttributes.id) {\n                attr[\"aria-describedby\"] = column.headerAttributes.id;\n            }\n\n            if (model._edit && column.field && options.editColumn && (incellEditing || (!incellEditing && isColumnEditable(column, model)))) {\n                attr[kendo.attr(\"container-for\")] = column.field;\n\n                if (incellEditing) {\n                    if (attr.className && attr.className.indexOf(classNames.editCell) !== -1) {\n                        attr.className += \" \" + classNames.editCell;\n                    } else if (!attr.className) {\n                        attr.className = classNames.editCell;\n                    }\n                }\n            } else {\n                if (column.expandable) {\n                    children = createPlaceholders({ level: options.level, className: classNames.iconPlaceHolder });\n                    iconClass = [classNames.icon];\n\n                    if (model.hasChildren) {\n                        iconClass.push(model.expanded ? classNames.iconCollapse : classNames.iconExpand);\n                    } else {\n                        iconClass.push(classNames.iconHidden);\n                    }\n\n                    if (model._error) {\n                        iconClass.push(classNames.refresh);\n                    } else if (!model.loaded() && model.expanded) {\n                        iconClass.push(classNames.loading);\n                        attr[\"aria-busy\"] = true;\n                    }\n\n                    children.push(kendoDomElement(\"span\", { className: iconClass.join(\" \") }));\n\n                    attr.style[\"white-space\"] = \"nowrap\";\n                }\n\n                if (isDirtyColumn(column, model)) {\n                    if (attr.className) {\n                        attr.className += classNames.dirtyCell;\n                    } else if (!attr.className) {\n                        attr.className = classNames.dirtyCell;\n                    }\n                }\n\n                if (column.command) {\n                    if (attr.className && attr.className.indexOf(\"k-command-cell\") !== -1 ) {\n                        attr.className += \" k-command-cell\";\n                    } else if (!attr.className) {\n                        attr.className = \"k-command-cell\";\n                    }\n\n                    columnHasEditCommand = grep(column.command, function(command) {\n                        return command === EDIT || command.name === EDIT;\n                    }).length > 0;\n\n                    if (model._edit && !this._isIncellEditable() && columnHasEditCommand) {\n                        children = this._buildCommands([\"update\", \"canceledit\"]);\n                    } else {\n                        children = this._buildCommands(column.command);\n                    }\n                } else {\n                    children.push(this._cellContent(column, model));\n                }\n\n                attr.className = [attr[\"class\"], attr.className].join(\" \").trim();\n            }\n\n            return kendoDomElement(\"td\", attr, children);\n        },\n\n        _cellContent: function(column, model) {\n            var that = this;\n            var value;\n            var incellEditing = that._isIncellEditable();\n            var dirtyIndicator;\n\n            if (column.selectable) {\n                return kendoHtmlElement(SELECTCOLUMNTMPL);\n            }\n\n            if (column.template) {\n                value = that._evalColumnTemplate(column, model);\n            } else if (column.field) {\n                value = model.get(column.field);\n                dirtyIndicator = incellEditing ? column.dirtyIndicatorTemplate(model) : \"\";\n                if (value !== null && !isUndefined(value)) {\n                    if (column.format) {\n                        value = kendo.format(column.format, value);\n                    }\n\n                    value = dirtyIndicator + value;\n                } else {\n                    value = dirtyIndicator;\n                }\n            } else if (value === null || isUndefined(value)) {\n                value = \"\";\n            }\n\n            if (column.template || !column.encoded) {\n                return kendoHtmlElement(value);\n            } else {\n                if (incellEditing) {\n                    return kendoHtmlElement(value);\n                } else {\n                    return kendoTextElement(value);\n                }\n            }\n        },\n\n        _evalColumnTemplate: function(column, model) {\n            if (this._isIncellEditable()) {\n                return column.dirtyCellTemplate(model);\n            } else {\n                return column.template(model);\n            }\n        },\n\n        _createDirtyColumnTemplate: function(column) {\n            var that = this;\n            var templateSettings = that._customTemplateSettings();\n            var columnTemplateAlias = \"#=this.columnTemplate(\" + templateSettings.paramName + \")#\";\n\n            var templateString = that._dirtyIndicatorTemplate(column.field) + columnTemplateAlias;\n            var templateFunction = kendoTemplate(templateString, templateSettings).bind({ columnTemplate: column.template });\n\n            return templateFunction;\n        },\n\n        _createIndicatorTemplate: function(column) {\n            var dirtyIndicatorTemplate = this._dirtyIndicatorTemplate(column.field);\n\n            return kendoTemplate(dirtyIndicatorTemplate);\n        },\n\n        _dirtyIndicatorTemplate: function(field) {\n            var that = this;\n            var dirtyField;\n            var templateSettings = that._customTemplateSettings();\n            var paramName = templateSettings.paramName;\n\n            if (field && paramName) {\n                dirtyField = field.charAt(0) === \"[\" ? kendo.expr(field, paramName + \".dirtyFields\") : paramName + \".dirtyFields['\" + field + \"']\";\n\n                return \"#= \" + paramName + \" && \" + paramName + \".dirty && \" + paramName + \".dirtyFields && \" + dirtyField +\n                        \" ? '<span class=\\\"k-dirty\\\"></span>' : '' #\";\n            }\n\n            return \"\";\n        },\n\n        _customTemplateSettings: function() {\n            return extend({}, kendo.Template, this.options.templateSettings);\n        },\n\n        _buildCommands: function(commands) {\n            var i, result = [];\n\n            for (i = 0; i < commands.length; i++) {\n                result.push(this._handleCommand(commands[i]));\n            }\n\n            return result;\n        },\n\n        _handleCommand: function(command) {\n            var name = (command.name || command).toLowerCase();\n            var text = this.options.messages.commands[name];\n            var icon = [];\n\n            command = extend({}, defaultCommands[name], { text: text }, command);\n\n            if (command.imageClass) {\n                icon.push(kendoDomElement(\"span\", {\n                    className: [ \"k-icon\", \"k-button-icon\", command.imageClass ].join(\" \")\n                }));\n            }\n\n            if (command.template) {\n                return kendoHtmlElement(kendo.template(command.template)({ message: command.text || this.options.messages.commands.search }));\n            } else {\n                return this._button(command, name, icon);\n            }\n        },\n\n        _button: function(command, name, icon) {\n            if (command.className && command.className.indexOf(\"k-primary\") > -1) {\n                command.className = command.className.replace(\"k-primary\", \"k-button-solid-primary\");\n            }\n\n            if (!command.className || command.className.indexOf(\"k-button-solid-primary\") === -1) {\n                command.className += \" k-button-solid-base\";\n            }\n\n            var button = kendoDomElement(\n                \"button\", {\n                    \"type\": \"button\",\n                    \"data-command\": name,\n                    className: [ \"k-button k-button-md k-rounded-md k-button-solid\", command.className ].join(\" \")\n                }, icon.concat([ kendoDomElement(\"span\", {\n                    type: \"span\",\n                    className: \"k-button-text\"\n                }, [ kendoTextElement(command.text || command.name) ]) ])\n            );\n\n            return button;\n        },\n\n        _positionResizeHandle: function(e) {\n            var th = $(e.currentTarget);\n            var resizeHandle = this.resizeHandle;\n            var position = th.position();\n            var left;\n            var rtlCorrection = 0;\n            var headerWrap;\n            var ieCorrection;\n            var webkitCorrection;\n            var firefoxCorrection;\n            var leftMargin;\n            var invisibleSpace;\n            var leftBorderWidth;\n            var scrollLeft;\n            var cellWidth = outerWidth(th);\n            var container = th.closest(\"div\");\n            var button = typeof e.buttons !== \"undefined\" ? e.buttons : (e.which || e.button);\n            var indicatorWidth = this.options.columnResizeHandleWidth || 3;\n            var halfResizeHandle = (indicatorWidth * 3) / 2;\n\n            left = cellWidth;\n\n            if (typeof button !== \"undefined\" && button !== 0) {\n                //do not create a new resize handle if a mouse button is still pressed\n                //this happens during resizing or before UserEvents trigger \"start\"\n                return;\n            }\n\n            if (!resizeHandle) {\n                resizeHandle = this.resizeHandle = $(\n                    '<div class=\"k-resize-handle\"><div class=\"k-resize-handle-inner\"></div></div>'\n                );\n            }\n\n            var cells = leafDataCells(th.closest(\"thead\")).filter(\":visible\");\n            if (isRtl) {\n                scrollLeft = kendo.scrollLeft(container);\n\n                if (browser.mozilla || (browser.webkit && browser.version >= 85)) {\n                    scrollLeft = scrollLeft * -1;\n                }\n                leftBorderWidth = parseFloat(container.css(\"borderLeftWidth\"));\n                left = th.offset().left + scrollLeft - parseFloat(th.css(\"marginLeft\")) - (container.offset().left + leftBorderWidth);\n                rtlCorrection = (left <= scrollLeft ? halfResizeHandle : 0);// when shown on first column headers are misaligned due to the width of the resize handler\n                headerWrap = th.closest(\".k-grid-header-wrap, .k-grid-header-locked\");\n                invisibleSpace = headerWrap[0].scrollWidth - headerWrap[0].offsetWidth; // the difference between the entire width and the visible area\n                leftMargin = parseFloat(headerWrap.css(\"marginLeft\"));\n                ieCorrection = browser.msie ? 2 * kendo.scrollLeft(headerWrap) + leftBorderWidth - leftMargin - rtlCorrection : 0;\n                webkitCorrection = browser.webkit && (browser.version < 85) ? (invisibleSpace - rtlCorrection - leftMargin + leftBorderWidth) : -rtlCorrection; //margin left is added due to a margin that avoids double borders\n                firefoxCorrection = browser.mozilla ? leftBorderWidth - leftMargin - rtlCorrection : 0;\n                left -= webkitCorrection + firefoxCorrection + ieCorrection;\n            } else {\n                for (var idx = 0; idx < cells.length; idx++) {\n                    if (cells[idx] == th[0]) {\n                        break;\n                    }\n                    left += cells[idx].offsetWidth;\n                }\n            }\n\n            container.append(resizeHandle);\n\n            resizeHandle\n                .show()\n                .css({\n                    top: position.top,\n                    left: left - halfResizeHandle,\n                    height: outerHeight(th),\n                    width: indicatorWidth * 3\n                })\n                .data(\"th\", th);\n\n            var that = this;\n            resizeHandle.off(\"dblclick\" + NS).on(\"dblclick\" + NS, function() {\n                //TODO handle frozen columns index\n                var index = th.index();\n                if ($.contains(that.thead[0], th[0])) {\n                    index += grep(that.columns, function(val) { return val.locked && !val.hidden; }).length;\n                }\n                that.autoFitColumn(index);\n            });\n        },\n\n        autoFitColumn: function(column) {\n            var that = this,\n                options = that.options,\n                columns = that.columns,\n                index,\n                th,\n                headerTable,\n                isLocked,\n                visibleLocked = that.lockedHeader ? leafDataCells(that.lockedHeader.find(\">table>thead\")).filter(isCellVisible).length : 0,\n                col;\n\n            //  retrieve the column object, depending on the method argument\n            if (typeof column == \"number\") {\n                column = columns[column];\n            } else if (isPlainObject(column)) {\n                column = grep(columns, function(item) {\n                    return item === column;\n                })[0];\n            } else {\n                column = grep(columns, function(item) {\n                    return item.field === column;\n                })[0];\n            }\n\n            if (!column || column.hidden) {\n                return;\n            }\n\n            index = inArray(column, columns);\n            isLocked = column.locked;\n\n            if (isLocked) {\n                headerTable = that.lockedHeader.children(\"table\");\n            } else {\n                headerTable = that.thead.parent();\n            }\n\n            th = headerTable.find(\"[data-index='\" + index + \"']\");\n\n            var contentTable = isLocked ? that.lockedTable : that.table,\n                footer = that.footer || $();\n\n            if (that.footer && that.lockedContent) {\n                footer = isLocked ? that.footer.children(\".k-grid-footer-locked\") : that.footer.children(\".k-grid-footer-wrap\");\n            }\n\n            var footerTable = footer.find(\"table\").first();\n\n            if (that.lockedHeader && visibleLocked >= index && !isLocked) {\n                index -= visibleLocked;\n            }\n\n            // adjust column index, depending on previous hidden columns\n            for (var j = 0; j < columns.length; j++) {\n                if (columns[j] === column) {\n                    break;\n                } else {\n                    if (columns[j].hidden) {\n                        index--;\n                    }\n                }\n            }\n\n            // get col elements\n            if (options.scrollable) {\n                col = headerTable.find(\"col:not(.k-group-col):not(.k-hierarchy-col)\").eq(index)\n                    .add(contentTable.children(\"colgroup\").find(\"col:not(.k-group-col):not(.k-hierarchy-col)\").eq(index))\n                    .add(footerTable.find(\"colgroup\").find(\"col:not(.k-group-col):not(.k-hierarchy-col)\").eq(index));\n            } else {\n                col = contentTable.children(\"colgroup\").find(\"col:not(.k-group-col):not(.k-hierarchy-col)\").eq(index);\n            }\n\n            var tables = headerTable.add(contentTable).add(footerTable);\n\n            var oldColumnWidth = outerWidth(th);\n\n            // reset the table and autofitted column widths\n            // if scrolling is disabled, we need some additional repainting of the table\n            col.width(\"\");\n            tables.css(\"table-layout\", \"fixed\");\n            col.width(\"auto\");\n            tables.addClass(\"k-autofitting\");\n            tables.css(\"table-layout\", \"\");\n\n            var newColumnWidth = Math.ceil(\n                    Math.max(\n                        outerWidth(th),\n                        outerWidth(contentTable.find(\"tr\").eq(0).children(\"td:visible\").eq(index)),\n                        outerWidth(footerTable.find(\"tr\").eq(0).children(\"td:visible\").eq(index))\n            ));\n\n            col.width(newColumnWidth);\n            column.width = newColumnWidth;\n\n            // if all visible columns have widths, the table needs a pixel width as well\n            if (options.scrollable) {\n                var cols = headerTable.find(\"col\"),\n                    colWidth,\n                    totalWidth = 0;\n                for (var idx = 0, length = cols.length; idx < length; idx += 1) {\n                    colWidth = cols[idx].style.width;\n                    if (colWidth && colWidth.indexOf(\"%\") == -1) {\n                        totalWidth += parseInt(colWidth, 10);\n                    } else {\n                        totalWidth = 0;\n                        break;\n                    }\n                }\n\n                if (totalWidth) {\n                    tables.each(function() {\n                        this.style.width = totalWidth + \"px\";\n                    });\n                }\n            }\n\n            tables.removeClass(\"k-autofitting\");\n\n            that.trigger(COLUMNRESIZE, {\n                column: column,\n                oldWidth: oldColumnWidth,\n                newWidth: newColumnWidth\n            });\n\n            that._applyLockedContainersWidth();\n            that._syncLockedContentHeight();\n            that._syncLockedHeaderHeight();\n        },\n\n        _adjustLockedHorizontalScrollBar: function() {\n            var table = this.table,\n                content = table.parent();\n\n            var scrollbar = table[0].offsetWidth > content[0].clientWidth ? kendo.support.scrollbar() : 0;\n            this.lockedContent.height(outerHeight(content) - scrollbar);\n        },\n\n        _syncLockedContentHeight: function() {\n            if (this.lockedTable) {\n                if (!this._touchScroller) {\n                    this._adjustLockedHorizontalScrollBar();\n                }\n                this._adjustRowsHeight(this.table, this.lockedTable);\n                this._syncLockedScroll();\n            }\n        },\n\n        _syncLockedHeaderHeight: function() {\n            if (this.lockedHeader) {\n                var lockedTable = this.lockedHeader.children(\"table\");\n                var table = this.thead.parent();\n\n                this._adjustRowsHeight(lockedTable, table);\n\n                syncTableHeight(lockedTable, table);\n            }\n        },\n\n        _syncLockedScroll: function() {\n            if (!this.options.scrollable) {\n                return;\n            }\n            this.lockedContent[0].scrollTop = this.content[0].scrollTop;\n        },\n\n        _resizable: function() {\n            if (!this.options.resizable) {\n                return;\n            }\n\n            if (this.resizable) {\n                this.resizable.destroy();\n            }\n\n            var treelist = this;\n\n            $(this.lockedHeader).find(\"thead\").add(this.thead)\n                .on(\"mousemove\" + NS, \"tr:not(.k-filter-row) > th\", this._positionResizeHandle.bind(this));\n\n            this.resizable = new kendo.ui.Resizable(this.wrapper, {\n                handle: \".k-resize-handle\",\n                start: function(e) {\n                    var th = $(e.currentTarget).data(\"th\");\n                    var index = $.inArray(th[0], leafDataCells(th.closest(\"thead\")).filter(\":visible\"));\n                    var header, contentTable;\n\n                    treelist.wrapper.addClass(\"k-grid-column-resizing\");\n\n                    if (treelist.lockedHeader && $.contains(treelist.lockedHeader[0], th[0])) {\n                        header = treelist.lockedHeader;\n                        contentTable = treelist.lockedTable;\n                    } else {\n                        header = treelist.thead.parent();\n                        contentTable = treelist.table;\n                    }\n\n                    this.col = contentTable.children(\"colgroup\").find(\"col\").eq(index)\n                          .add(header.find(\"col\").eq(index));\n                    this.th = th;\n                    this.startLocation = e.x.location;\n                    this.columnWidth = outerWidth(th);\n                    this.table = this.col.closest(\"table\");\n                    this.totalWidth = this.table.width();\n                },\n                resize: function(e) {\n                    var rtlModifier = isRtl ? -1 : 1;\n                    var minColumnWidth = 11;\n                    var delta = (e.x.location * rtlModifier) - (this.startLocation * rtlModifier);\n\n                    if (this.columnWidth + delta < minColumnWidth) {\n                        delta = minColumnWidth - this.columnWidth;\n                    }\n\n                    this.table.width(this.totalWidth + delta);\n                    this.col.width(this.columnWidth + delta);\n                },\n                resizeend: function() {\n                    treelist.wrapper.removeClass(\"k-grid-column-resizing\");\n\n                    var field = this.th.attr(\"data-field\");\n                    var column = grep(leafColumns(treelist.columns), function(c) {\n                        return c.field == field;\n                    });\n                    var newWidth = Math.floor(outerWidth(this.th));\n\n                    column[0].width = newWidth;\n                    treelist._resize();\n                    treelist._syncLockedContentHeight();\n                    treelist._syncLockedHeaderHeight();\n                    treelist.trigger(COLUMNRESIZE, {\n                        column: column,\n                        oldWidth: this.columnWidth,\n                        newWidth: newWidth\n                    });\n\n                    this.table = this.col = this.th = null;\n                }\n            });\n        },\n\n        _sortable: function() {\n            var columns;\n            var column;\n            var sortableInstance;\n            var cells;\n            var cell, idx, length;\n            var sortable = this.options.sortable;\n            var hasMultiColumnHeaders = grep(this.columns, function(item) {\n                return item.columns !== undefined;\n            }).length > 0;\n\n            if (!sortable) {\n                return;\n            }\n\n            if (hasMultiColumnHeaders) {\n                if (this.lockedHeader) {\n                    cells = sortCells(leafDataCells(this.lockedHeader.find(\">table>thead\")).add(leafDataCells(this.thead)));\n                } else {\n                    cells = leafDataCells(this.thead);\n                }\n            } else {\n                cells = $(this.lockedHeader).add(this.thead).find(\"tr:not(.k-filter-row) th\");\n            }\n            columns = leafColumns(this.columns);\n\n            for (idx = 0, length = cells.length; idx < length; idx++) {\n                column = columns[idx];\n\n                if (column.sortable !== false && !column.command && column.field && !column.selectable) {\n                    cell = cells.eq(idx);\n\n                    sortableInstance = cell.data(\"kendoColumnSorter\");\n                    if (sortableInstance) {\n                        sortableInstance.destroy();\n                    }\n\n                    cell.kendoColumnSorter(\n                            extend({}, sortable, column.sortable, {\n                                dataSource: this.dataSource\n                            })\n                        );\n                }\n            }\n        },\n\n        _filterable: function() {\n            var cells;\n            var filterable = this.options.filterable;\n            var idx;\n            var length;\n            var columns;\n            var column;\n            var cell;\n            var filterMenuInstance;\n            var hasMultiColumnHeaders = grep(this.columns, function(item) {\n                return item.columns !== undefined;\n            }).length > 0;\n\n            if (!filterable || this.options.columnMenu) {\n                return;\n            }\n\n            var filterInit = (function(e) {\n                this.trigger(FILTERMENUINIT, { field: e.field, container: e.container });\n            }).bind(this);\n\n            var filterOpen = (function(e) {\n                this.trigger(FILTERMENUOPEN, { field: e.field, container: e.container });\n            }).bind(this);\n\n            if (hasMultiColumnHeaders) {\n                if (this.lockedHeader) {\n                    cells = leafDataCells(this.lockedHeader.find(\">table>thead\").add(this.thead));\n                } else {\n                    cells = leafDataCells(this.thead);\n                }\n            } else {\n                cells = $(this.lockedHeader).add(this.thead).find(\"tr:not(.k-filter-row) th\");\n            }\n            columns = leafColumns(this.columns);\n\n            if (filterable && typeof filterable.mode == STRING && filterable.mode.indexOf(\"menu\") == -1) {\n                filterable = false;\n            }\n\n            if (!filterable) {\n                return;\n            }\n\n            for (idx = 0, length = cells.length; idx < length; idx++) {\n                column = columns[idx];\n                cell = cells.eq(idx);\n\n                filterMenuInstance = cell.data(\"kendoFilterMenu\");\n                if (filterMenuInstance) {\n                    filterMenuInstance.destroy();\n                }\n\n                if (column.command || column.filterable === false || column.selectable) {\n                    continue;\n                }\n\n                cell.kendoFilterMenu(extend(true, {}, filterable, column.filterable, {\n                    dataSource: this.dataSource,\n                    init: filterInit,\n                    open: filterOpen,\n                    appendTo: DOT + classNames.headerCellInner\n                }));\n            }\n        },\n\n        _filterRow: function() {\n            var that = this;\n            if (!that._hasFilterRow()) {\n               return;\n            }\n\n            var settings;\n            var $angular = that.options.$angular;\n            var uidAttr = kendo.attr('uid');\n            var columns = leafColumns(that.columns),\n                filterable = that.options.filterable,\n                filterHandler = function(e) {\n                    if (that.trigger(\"filter\", { filter: e.filter, field: e.field })) {\n                        e.preventDefault();\n                    }\n                },\n                existingInstance;\n\n            for (var i = 0; i < columns.length; i++) {\n                var suggestDataSource,\n                    col = columns[i],\n                    operators = that.options.filterable.operators,\n                    customDataSource = false,\n                    th = this.wrapper.find('.k-grid-header .k-filter-row th[' + uidAttr + '=\"' + col.headerAttributes.id + '\"]'),\n                    field = col.field,\n                    parentColumn = col.parentColumn;\n\n                delete col.parentColumn;\n\n                if (field && col.filterable !== false) {\n                    var cellOptions = col.filterable && col.filterable.cell || {};\n                    existingInstance = th.find('.k-filtercell').data('kendoFilterCell');\n\n                    if (existingInstance) {\n                        existingInstance.destroy();\n                        th.empty();\n                    }\n\n                    suggestDataSource = that.options.dataSource;\n                    if (suggestDataSource instanceof DataSource) {\n                        suggestDataSource = that.options.dataSource.options;\n                    }\n\n                    var messages = extend(true, {}, filterable.messages);\n                    if (col.filterable) {\n                        extend(true, messages, col.filterable.messages);\n                    }\n\n                    if (cellOptions.enabled === false) {\n                        th.html(\"&nbsp;\");\n                        continue;\n                    }\n                    if (cellOptions.dataSource) {\n                        suggestDataSource = cellOptions.dataSource;\n                        customDataSource = true;\n                    }\n                    if (col.filterable && col.filterable.operators) {\n                        operators = col.filterable.operators;\n                    }\n\n                    settings = {\n                        column: col,\n                        dataSource: that.dataSource,\n                        suggestDataSource: suggestDataSource,\n                        customDataSource: customDataSource,\n                        field: field,\n                        messages: messages,\n                        values: col.values,\n                        template: cellOptions.template,\n                        delay: cellOptions.delay,\n                        inputWidth: cellOptions.inputWidth,\n                        suggestionOperator: cellOptions.suggestionOperator,\n                        minLength: cellOptions.minLength,\n                        dataTextField: cellOptions.dataTextField,\n                        operator: cellOptions.operator,\n                        operators: operators,\n                        showOperators: cellOptions.showOperators,\n                        change: filterHandler\n                    };\n\n                    if ($angular) {\n                        settings.$angular = $angular;\n                    }\n\n                    $(\"<span/>\").attr(kendo.attr(\"field\"), field)\n                        .appendTo(th)\n                        .kendoFilterCell(settings);\n                    col.parentColumn = parentColumn;\n                } else {\n                    th.html(\"&nbsp;\");\n                }\n            }\n        },\n\n        _hasFilterRow: function() {\n            var filterable = this.options.filterable;\n            var hasFiltering = filterable &&\n                    typeof filterable.mode == STRING &&\n                    filterable.mode.indexOf(\"row\") != -1;\n            var columns = this.columns;\n            var columnsWithoutFiltering = $.grep(columns, function(col) {\n                return col.filterable === false;\n            });\n\n            if (columns.length && columnsWithoutFiltering.length == columns.length) {\n                hasFiltering = false;\n            }\n\n            return hasFiltering;\n        },\n\n        _change: function() {\n            var that = this;\n            var selectedValues;\n\n            if (that._checkBoxSelection) {\n                selectedValues = that.selectable.value();\n                that._uncheckCheckBoxes();\n                that._checkRows(selectedValues);\n                if (selectedValues.length && selectedValues.length === that.items().length) {\n                    that._toggleHeaderCheckState(true);\n                } else {\n                    that._toggleHeaderCheckState(false);\n                }\n            }\n            this.trigger(CHANGE);\n        },\n\n        _isLocked: function() {\n            return this.lockedHeader !== null;\n        },\n\n        _selectable: function() {\n            var that = this;\n            var selectable = this.options.selectable;\n            var filter;\n            var element = this.table;\n            var useAllItems;\n            var isLocked = that._isLocked();\n            var multi;\n            var cell;\n\n            if (selectable) {\n                selectable = kendo.ui.Selectable.parseOptions(selectable);\n\n                if (this._hasLockedColumns) {\n                    element = element.add(this.lockedTable);\n                    useAllItems = selectable.multiple && selectable.cell;\n                }\n\n                filter = \">tbody>tr:not(.k-footer-template)\";\n\n                if (selectable.cell) {\n                    filter = filter + \">td\";\n                }\n\n                this.selectable = new kendo.ui.Selectable(element, {\n                    filter: filter,\n                    aria: true,\n                    multiple: selectable.multiple,\n                    change: this._change.bind(this),\n                    useAllItems: useAllItems,\n                    continuousItems: this._continuousItems.bind(this, filter, selectable.cell),\n                    relatedTarget: !selectable.cell && this._hasLockedColumns ? this._selectableTarget.bind(this) : undefined\n                });\n\n                if (that.options.navigatable) {\n                    multi = selectable.multiple;\n                    cell = selectable.cell;\n\n                    element.on(\"keydown\" + NS, function(e) {\n                        var current = that.current();\n                        var target = e.target;\n                        if (e.keyCode === keys.SPACEBAR && !e.shiftKey && $.inArray(target, element) > -1 &&\n                            !current.is(\".k-header\")) {\n\n                                e.preventDefault();\n                                e.stopPropagation();\n                                current = cell ? current : current.parent();\n\n                                if (isLocked && !cell) {\n                                    current = current.add(that._relatedRow(current));\n                                }\n\n                                if (multi) {\n                                    if (!e.ctrlKey) {\n                                        that.selectable.clear();\n                                    } else {\n                                        if (current.hasClass(classNames.selected)) {\n                                            current.removeClass(classNames.selected);\n                                            that.trigger(CHANGE);\n                                            return;\n                                        }\n                                    }\n                                } else {\n                                    that.selectable.clear();\n                                }\n                                if (!cell) {\n                                    that.selectable._lastActive = current;\n                                }\n\n                                that.selectable.value(current);\n                                that.trigger(CHANGE);\n                        } else if (!cell && ((e.shiftKey && e.keyCode == keys.LEFT) ||\n                                    (e.shiftKey && e.keyCode == keys.RIGHT) ||\n                                    (e.shiftKey && e.keyCode == keys.UP) ||\n                                    (e.shiftKey && e.keyCode == keys.DOWN) ||\n                                    (e.keyCode === keys.SPACEBAR && e.shiftKey))) {\n\n                            e.preventDefault();\n                            e.stopPropagation();\n                            current = current.parent();\n\n                            if (isLocked) {\n                                current = current.add(that._relatedRow(current));\n                            }\n\n                            if (multi) {\n                                if (!that.selectable._lastActive) {\n                                    that.selectable._lastActive = current;\n                                }\n                                that.selectable.selectRange(that.selectable._firstSelectee(), current);\n                            } else {\n                                that.selectable.clear();\n                                that.selectable.value(current);\n                            }\n                            that.trigger(CHANGE);\n                        }\n                    });\n                }\n            }\n        },\n\n        _continuousItems: function(filter, cell) {\n            if (!this.lockedContent) {\n                return;\n            }\n\n            var lockedItems = $(filter, this.lockedTable);\n            var nonLockedItems = $(filter, this.table);\n            var columns = cell ? lockedColumns(this.columns).length : 1;\n            var nonLockedColumns = cell ? this.columns.length - columns : 1;\n            var result = [];\n\n            for (var idx = 0; idx < lockedItems.length; idx += columns) {\n                push.apply(result, lockedItems.slice(idx, idx + columns));\n                push.apply(result, nonLockedItems.splice(0, nonLockedColumns));\n            }\n\n            return result;\n        },\n\n        _selectableTarget: function(items) {\n            var related;\n            var result = $();\n            for (var idx = 0, length = items.length; idx < length; idx ++) {\n                related = this._relatedRow(items[idx]);\n\n                if (inArray(related[0], items) < 0) {\n                    result = result.add(related);\n                }\n            }\n\n            return result;\n        },\n\n        _relatedRow: function(row) {\n            var lockedTable = this.lockedTable;\n            row = $(row);\n\n            if (!lockedTable) {\n                return row;\n            }\n\n            var table = row.closest(this.table.add(this.lockedTable));\n            var index = table.find(\">tbody>tr\").index(row);\n\n            table = table[0] === this.table[0] ? lockedTable : this.table;\n\n            return table.find(\">tbody>tr\").eq(index);\n        },\n\n        select: function(value) {\n            var that = this;\n            var selectable = this.selectable;\n\n            if (that._checkBoxSelection) {\n                if (value) {\n                    that._checkRows(value);\n                    if (that.select().length === that.items().length) {\n                        that._toggleHeaderCheckState(true);\n                    }\n                }\n\n                return that.items().filter(\".\" + SELECTED);\n            }\n\n            if (!selectable) {\n                return $();\n            }\n\n            if (typeof value !== \"undefined\") {\n                if (!selectable.options.multiple) {\n                    selectable.clear();\n\n                    value = value.first();\n                }\n\n                if (this._hasLockedColumns) {\n                    value = value.add($.map(value, this._relatedRow.bind(this)));\n                }\n            }\n\n            return selectable.value(value);\n        },\n\n        clearSelection: function() {\n            var that = this;\n\n            if (that.selectable && !that._checkBoxSelection) {\n                that.selectable.clear();\n            }\n\n            if (that._checkBoxSelection) {\n                that._deselectCheckRows(that.select(), true);\n                return;\n            }\n        },\n\n        _uncheckCheckBoxes: function() {\n            var that = this;\n            var tables = that.table.add(that.lockedTable);\n\n            tables.find(\"tbody \" + CHECKBOXINPUT).attr(\"aria-checked\", false)\n                .prop(\"checked\", false).attr(\"aria-label\", \"Select row\");\n\n        },\n\n        _deselectCheckRows: function(items, preventChange) {\n            var that = this;\n            items = that.table.add(that.lockedTable).find(items);\n\n            if (that._isLocked()) {\n                items = items.add(items.map(function() {\n                    return that._relatedRow(this);\n                }));\n            }\n\n            items.each(function() {\n                $(this).removeClass(SELECTED).find(CHECKBOXINPUT).attr(\"aria-checked\", false)\n                    .prop(\"checked\", false).attr(\"aria-label\", \"Select row\");\n            });\n            that._toggleHeaderCheckState(false);\n\n            if (!preventChange) {\n                that.trigger(CHANGE);\n            }\n        },\n\n        _headerCheckboxClick: function(e) {\n            var that = this,\n                checkBox = $(e.target),\n                checked = checkBox.prop(\"checked\"),\n                parentGrid = checkBox.closest(\".k-grid.k-widget\").getKendoTreeList();\n\n            if (that !== parentGrid) {\n                return;\n            }\n\n            if (checked) {\n                that.select(parentGrid.items());\n            } else {\n                that.clearSelection();\n            }\n            that.trigger(CHANGE);\n        },\n\n        _checkboxClick: function(e) {\n            var that = this,\n                row = $(e.target).closest(\"tr\"),\n                isSelecting = !row.hasClass(SELECTED),\n                dataItem = that.dataItem(row),\n                children = [],\n                selector = \"\";\n\n            if (that !== row.closest(\".k-grid.k-widget\").getKendoTreeList()) {\n                return;\n            }\n\n            if (that._includeChildren) {\n                that.dataSource.allChildNodes(dataItem, children);\n\n                for (var i = 0; i < children.length; i++) {\n                    selector += \"tr[data-uid='\" +\tchildren[i].uid + \"'],\";\n                }\n            }\n\n            selector += \"tr[data-uid='\" +\tdataItem.uid + \"']\";\n            row = $(selector);\n\n            if (isSelecting) {\n                that.select(row);\n                that.trigger(CHANGE);\n            } else {\n                that._deselectCheckRows(row);\n            }\n        },\n\n        _checkRows: function(items) {\n            items.each(function() {\n                $(this).addClass(SELECTED).find(CHECKBOXINPUT).prop(\"checked\", true)\n                    .attr(\"aria-label\", \"Deselect row\").attr(\"aria-checked\", true);\n            });\n        },\n\n        _toggleHeaderCheckState: function(checked) {\n            var that = this;\n            if (checked) {\n                that.thead.add(that.lockedHeader).find(\"tr \" + CHECKBOXINPUT)\n                    .prop(\"checked\", true).attr(\"aria-checked\", true)\n                    .attr(\"aria-label\", \"Deselect all rows\");\n            } else {\n                that.thead.add(that.lockedHeader).find(\"tr \" + CHECKBOXINPUT)\n                    .prop(\"checked\", false).attr(\"aria-checked\", false)\n                    .attr(\"aria-label\", \"Select all rows\");\n            }\n        },\n\n        _dataSource: function(dataSource) {\n            var that = this;\n            var ds = this.dataSource;\n            var pageable = that.options.pageable;\n\n            if (ds) {\n                ds.unbind(CHANGE, this._refreshHandler);\n                ds.unbind(ERROR, this._errorHandler);\n                ds.unbind(SORT, this._sortHandler);\n                ds.unbind(PROGRESS, this._progressHandler);\n            }\n\n            this._refreshHandler = this.refresh.bind(this);\n            this._errorHandler = this._error.bind(this);\n            this._sortHandler = this._clearSortClasses.bind(this);\n            this._progressHandler = this._progress.bind(this);\n\n\n            if (isPlainObject(dataSource)) {\n                extend(dataSource, { table: that.table, fields: that.columns });\n\n                if (isPlainObject(pageable) && pageable.pageSize !== undefined) {\n                    dataSource.pageSize = pageable.pageSize;\n                }\n            }\n\n            ds = this.dataSource = TreeListDataSource.create(dataSource);\n\n            if (pageable) {\n                ds._collapsedTotal = undefined;\n            }\n\n            ds.bind(CHANGE, this._refreshHandler);\n            ds.bind(ERROR, this._errorHandler);\n            ds.bind(SORT, this._sortHandler);\n            ds.bind(PROGRESS, this._progressHandler);\n\n            this._dataSourceFetchProxy = (function() {\n                this.dataSource.fetch();\n            }).bind(this);\n        },\n\n        setDataSource: function(dataSource) {\n            this._dataSource(dataSource);\n            this._sortable();\n            this._filterable();\n            this._filterRow();\n            this._columnMenu();\n            this._pageable();\n\n            this._contentTree.render([]);\n\n            if (this.options.autoBind) {\n                this.dataSource.fetch();\n            }\n        },\n\n        dataItem: function(element) {\n            if (element instanceof TreeListModel) {\n                return element;\n            }\n\n            var row = $(element).closest(\"tr\");\n            var uid = row.attr(kendo.attr(\"uid\"));\n            var model = isUndefined(uid) ? null : this.dataSource.getByUid(uid);\n\n            return model;\n        },\n\n        editRow: function(row) {\n            var that = this;\n            var model;\n\n            if (this._isIncellEditable() || !this.options.editable) {\n                return;\n            }\n\n            if (typeof row === STRING) {\n                row = this.tbody.find(row);\n            }\n\n            if (that._isPageable() && that._isPopupEditable() && row instanceof TreeListModel) {\n                // popup editor can be created without a rendered row\n                model = row;\n            } else {\n                model = this.dataItem(row);\n            }\n\n            if (!model) {\n                return;\n            }\n\n            if (that.editor) {\n                model._edit = true;\n                this._render();\n                this._cancelEditor();\n            } else {\n                that._preventPageSizeRestore = false;\n\n            }\n\n            if (this._editMode() != \"popup\") {\n                model._edit = true;\n            }\n\n            if (this.trigger(BEFORE_EDIT, { model: model })) {\n                that.dataSource._restorePageSizeAfterAddChild();\n                return;\n            }\n\n            this._render();\n\n            this._createEditor(model);\n\n            this.trigger(EDIT, {\n                container: this.editor.wrapper,\n                model: model\n            });\n        },\n\n        _cancelEdit: function(e) {\n            if (!this.editor) {\n                return;\n            }\n            var currentIndex;\n\n            e = extend(e, {\n                container: this.editor.wrapper,\n                model: this.editor.model\n            });\n\n            if (this.trigger(CANCEL, e)) {\n                return;\n            }\n\n            if (this.options.navigatable) {\n                currentIndex = this.items().index($(this.current()).parent());\n            }\n\n            this.cancelRow();\n\n            if (this.options.navigatable) {\n                this.current(this.items().eq(currentIndex).children().filter(NAVCELL).first());\n                focusTable(this.table, true);\n            }\n        },\n\n        cancelRow: function() {\n            if (this._isIncellEditable()) {\n                return;\n            }\n\n            this._cancelEditor();\n\n            this._render();\n        },\n\n        saveRow: function() {\n            var editor = this.editor;\n            var args;\n\n            if (this._isIncellEditable()) {\n                return;\n            }\n\n            if (!editor) {\n                return;\n            }\n\n            args = {\n                model: editor.model,\n                container: editor.wrapper\n            };\n\n            if (editor.end() && !this.trigger(SAVE, args)) {\n                this.dataSource.sync();\n            }\n        },\n\n        addRow: function(parent) {\n            var that = this;\n            var dataSource = that.dataSource;\n            var pageable = that._isPageable();\n            var incellEditing = that._isIncellEditable();\n            var inlineEditing = that._isInlineEditable();\n            var editor = this.editor;\n            var index = 0;\n            var model = {};\n\n            if ((editor && !editor.end()) || !this.options.editable) {\n                return;\n            }\n\n            if (parent) {\n                if (!(parent instanceof TreeListModel)) {\n                    parent = this.dataItem(parent);\n                }\n\n                model[parent.parentIdField] = parent.id;\n                index = this.dataSource.indexOf(parent) + 1;\n\n                this.expand(parent)\n                    .then(function() {\n                        var showNewModelInView = pageable && dataSource._isLastItemInView(parent) && (incellEditing || inlineEditing);\n                        that._insertAt(model, index, showNewModelInView);\n                    });\n\n                return;\n            }\n\n            this._insertAt(model, index);\n        },\n\n        _insertAt: function(model, index, showNewModelInView) {\n            var that = this;\n            var dataSource = that.dataSource;\n            model = that.dataSource.insert(index, model);\n\n            if (showNewModelInView) {\n                dataSource._setAddChildPageSize();\n            }\n\n            var row = this._itemFor(model);\n            var cell;\n\n            if (that._isIncellEditable()) {\n                cell = row.children(\"td\").eq(that._firstEditableColumnIndex(row));\n                that.editCell(cell);\n            } else if (row && row[0]) {\n                that.editRow(row);\n            } else if ((that._isPageable() || that.dataSource.filter()) && (that._isPopupEditable() || that._isInlineEditable())) {\n                that.editRow(model);\n            }\n        },\n\n        _firstEditableColumnIndex: function(container) {\n            var that = this;\n            var model = that.dataItem(container);\n            var columns = leafColumns(that.columns);\n            var length = columns.length;\n            var column;\n            var idx;\n\n            for (idx = 0; idx < length; idx++) {\n                column = columns[idx];\n\n                if (model && (!model.editable || model.editable(column.field)) && !column.command && column.field && column.hidden !== true) {\n                    return idx;\n                }\n            }\n\n            return -1;\n        },\n\n        removeRow: function(row) {\n            var model = this.dataItem(row);\n            var args = {\n                model: model,\n                row: row\n            };\n\n            if (this.options.editable && model && !this.trigger(REMOVE, args)) {\n                if (document.activeElement === $(row).find(\".k-grid-delete\")[0]) {\n                    $(row).find(\".k-grid-delete\").trigger(\"blur\");\n                }\n                this.dataSource.remove(model);\n\n                if (!this._isIncellEditable()) {\n                    this.dataSource.sync();\n                }\n            }\n        },\n\n        _cancelEditor: function() {\n            var that = this;\n            var model;\n            var editor = that.editor;\n\n            if (editor) {\n                model = editor.model;\n\n                that._destroyEditor();\n\n                if (!that._isIncellEditable()) {\n                    that.dataSource.cancelChanges(model);\n                } else if (that._shouldRestorePageSize()) {\n                    that.dataSource._restorePageSizeAfterAddChild();\n                }\n\n                model._edit = false;\n            }\n\n            that._preventPageSizeRestore = false;\n        },\n\n        _shouldRestorePageSize: function() {\n            var that = this;\n            return that._isPageable() && that._isIncellEditable() && !that._preventPageSizeRestore;\n        },\n\n        _destroyEditor: function() {\n            if (!this.editor) {\n                return;\n            }\n\n            this.editor.close();\n            this.editor = null;\n        },\n\n        _createEditor: function(model) {\n            var row = this.itemFor(model);\n            var columns = leafColumns(this.columns);\n            var leafCols = [];\n\n            for (var idx = 0; idx < columns.length; idx++) {\n                leafCols.push(extend({}, columns[idx]));\n                delete leafCols[idx].parentColumn;\n            }\n\n            row = row.add(this._relatedRow(row));\n\n            var mode = this._editMode();\n\n            var options = {\n                columns: leafCols,\n                model: model,\n                target: this,\n                clearContainer: false,\n                template: this.options.editable.template\n            };\n\n            if (mode == \"inline\") {\n                this.editor = new Editor(row, options);\n            } else {\n                extend(options, {\n                    window: this.options.editable.window,\n                    commandRenderer: (function() {\n                        return this._buildCommands([\"update\", \"canceledit\"]);\n                    }).bind(this),\n                    fieldRenderer: this._cellContent.bind(this),\n                    save: this.saveRow.bind(this),\n                    cancel: this._cancelEdit.bind(this),\n                    appendTo: this.wrapper\n                });\n\n                this.editor = new PopupEditor(row, options);\n            }\n        },\n\n        _createIncellEditor: function(cell, options) {\n            var that = this;\n            var column = extend({}, options.columns[0]);\n\n            delete column.parentColumn;\n\n            return new IncellEditor(cell, extend({}, {\n                fieldRenderer: that._cellContent.bind(that),\n                appendTo: that.wrapper,\n                clearContainer: false,\n                target: that,\n                columns: [column],\n                model: options.model,\n                change: options.change\n            }));\n        },\n\n        editCell: function(cell) {\n            var that = this;\n            cell = $(cell);\n            var column = leafColumns(that.columns)[that.cellIndex(cell)];\n            var model = that.dataItem(cell);\n\n            if (that._isIncellEditable() && model && isColumnEditable(column, model)) {\n                that._editCell(cell, column, model);\n            }\n        },\n\n        _editCell: function(cell, column, model) {\n            var that = this;\n            var editedCell;\n\n            if (that.trigger(BEFORE_EDIT, { model: model })) {\n                that.dataSource._restorePageSizeAfterAddChild();\n                return;\n            }\n\n            that.closeCell();\n\n            model._edit = true;\n\n            that._cancelEditor();\n\n            that._render({\n                editedColumn: column,\n                editedColumnIndex: cell.index()\n            });\n\n            editedCell = that.table.add(that.lockedTable).find(DOT + classNames.editCell).first();\n\n            that.editor = that._createIncellEditor(editedCell, {\n                columns: [column],\n                model: model,\n                change: function(e) {\n                    if (that.trigger(SAVE, { values: e.values, container: cell, model: model } )) {\n                        e.preventDefault();\n                    }\n\n                }\n            });\n\n            // refresh the current element as the DOM element reference can be changed after render()\n            that._current = editedCell;\n\n            that.trigger(EDIT, { container: cell, model: model });\n        },\n\n        closeCell: function(isCancel) {\n            var that = this;\n            var cell = (that.editor || {}).element;\n            var tr;\n            var model;\n\n            if (!cell || !cell[0] || !that._isIncellEditable()) {\n                return;\n            }\n\n            model = that.dataItem(cell);\n\n            if (isCancel && that.trigger(CANCEL, { container: cell, model: model })) {\n                return;\n            }\n\n            that.trigger(CELL_CLOSE, { type: isCancel ? CANCEL : SAVE, model: model, container: cell });\n\n            that._cancelEditor();\n\n            cell.removeClass(classNames.editCell);\n\n            tr = cell.parent().removeClass(classNames.editRow);\n\n            if (that.lockedContent) {\n                that._relatedRow(tr).removeClass(classNames.editRow);\n            }\n\n            that._render();\n\n            that.trigger(ITEM_CHANGE, { item: tr, data: model, ns: ui });\n\n            if (that.lockedContent) {\n                adjustRowHeight(tr.css(\"height\", \"\")[0], that._relatedRow(tr).css(\"height\", \"\")[0]);\n            }\n        },\n\n        cancelChanges: function() {\n            this.dataSource.cancelChanges();\n        },\n\n        saveChanges: function() {\n            var that = this;\n            var editable = (that.editor || {}).editable;\n            var valid = editable && editable.end();\n\n            if ((valid || !editable) && !that.trigger(SAVE_CHANGES)) {\n                that.dataSource.sync();\n            }\n        },\n\n        _editMode: function() {\n            var mode = \"inline\",\n                editable = this.options.editable;\n\n            if (editable !== true) {\n                if (typeof editable == \"string\") {\n                    mode = editable;\n                } else {\n                    mode = editable.mode || mode;\n                }\n            }\n\n            return mode.toLowerCase();\n        },\n\n        _isIncellEditable: function() {\n            return this._editMode() === INCELL;\n        },\n\n        _isInlineEditable: function() {\n            return this._editMode() === INLINE;\n        },\n\n        _isPopupEditable: function() {\n            return this._editMode() === POPUP;\n        },\n\n        hideColumn: function(column) {\n            this._toggleColumnVisibility(column, true);\n        },\n\n        showColumn: function(column) {\n            this._toggleColumnVisibility(column, false);\n        },\n\n        _toggleColumnVisibility: function(column, hidden) {\n            column = this._findColumn(column);\n\n            if (!column || column.hidden === hidden) {\n                return;\n            }\n\n            column.hidden = hidden;\n            this._setParentsVisibility(column, !hidden);\n\n            this._ensureExpandableColumn();\n            this._clearColsCache();\n            this._renderCols();\n            this._renderHeader();\n            this._render();\n\n            this._adjustTablesWidth();\n\n            this.trigger(hidden ? COLUMNHIDE : COLUMNSHOW, { column: column });\n\n            if (!hidden && !column.width) {\n                this.table\n                    .add(this.thead.closest(\"table\"))\n                    .width(\"\");\n            }\n            this._updateFirstColumnClass();\n        },\n\n        _findColumn: function(column) {\n            if (typeof column == \"number\") {\n                column = this.columns[column];\n            } else if (isPlainObject(column)) {\n                column = grep(leafColumns(this.columns), function(item) {\n                    return item === column;\n                })[0];\n            } else {\n                column = grep(leafColumns(this.columns), function(item) {\n                    return item.field === column;\n                })[0];\n            }\n\n            return column;\n        },\n\n        _adjustTablesWidth: function() {\n            var idx, length;\n            var cols = this.thead.prev().children();\n            var colWidth, width = 0;\n\n            for (idx = 0, length = cols.length; idx < length; idx++ ) {\n                colWidth = cols[idx].style.width;\n                if (colWidth && colWidth.indexOf(\"%\") == -1) {\n                    width += parseInt(colWidth, 10);\n                } else {\n                    width = 0;\n                    break;\n                }\n            }\n\n\n            if (width) {\n                this.table\n                    .add(this.thead.closest(\"table\"))\n                    .width(width);\n            }\n        },\n\n        _reorderable: function() {\n            if (!this.options.reorderable) {\n                return;\n            }\n\n            var scrollable = this.options.scrollable === true;\n            var selector = (scrollable ? \".k-grid-header:first \" : \"table:first>.k-grid-header \") + HEADERCELLS;\n            var that = this;\n\n            this._draggableInstance = new ui.Draggable(this.wrapper, {\n                group: kendo.guid(),\n                filter: selector,\n                hint: function(target) {\n                    return $('<div class=\"k-reorder-clue k-drag-clue\" />')\n                    .html(target.attr(kendo.attr(\"title\")) || target.attr(kendo.attr(\"field\")) || target.text())\n                    .prepend('<span class=\"k-icon k-drag-status k-i-cancel\" />');\n                }\n            });\n\n            this.reorderable = new ui.Reorderable(this.wrapper, {\n                draggable: this._draggableInstance,\n                dragOverContainers: this._allowDragOverContainers.bind(this),\n                inSameContainer: function(e) {\n                    return $(e.source).parent()[0] === $(e.target).parent()[0] && targetParentContainerIndex(flatColumnsInDomOrder(that.columns), that.columns, e.sourceIndex, e.targetIndex) > -1;\n                },\n                change: function(e) {\n                    var columns = flatColumnsInDomOrder(that.columns);\n                    var column = columns[e.oldIndex];\n                    var newIndex = targetParentContainerIndex(columns, that.columns, e.oldIndex, e.newIndex);\n\n                    that.trigger(COLUMNREORDER, {\n                        newIndex: newIndex,\n                        oldIndex: inArray(column, columns),\n                        column: column\n                    });\n\n                    that.reorderColumn(newIndex, column, e.position === \"before\");\n                }\n            });\n        },\n\n        _allowDragOverContainers: function(sourceIndex, targetIndex) {\n            var columns = flatColumnsInDomOrder(this.columns);\n            return columns[sourceIndex].lockable !== false && targetParentContainerIndex(columns, this.columns, sourceIndex, targetIndex) > -1;\n        },\n\n        _reorderTrees: function(destSources, destContainer, destDomTree, sources, sourcesContainer, sourcesDomTree, before, depth) {\n            var ths = $();\n            var source = sourcesContainer.find(\"tr\").eq(sources[0].rowIndex);\n            var sourceDOM = sourcesDomTree.children[sources[0].rowIndex];\n            var sourceChildren = source.children();\n            var destDomChildren;\n            var currentIndex;\n            var destColumn = before ? destSources[0] : destSources[destSources.length - 1];\n            var destRow;\n            var sourcesLeafs;\n            var destLeafs;\n            var reorderTaget;\n            var destThs;\n\n            for (var idx = 0; idx < sources.length; idx++) {\n                currentIndex = sources[idx].cellIndex;\n                ths = ths.add(sourceChildren.eq(currentIndex));\n                destDomChildren = destDomTree.children[destColumn.rowIndex].children;\n                if (destDomTree === sourcesDomTree && before) {\n                    currentIndex += idx;\n                }\n\n                destDomChildren.splice(before ? destColumn.cellIndex + idx : destColumn.cellIndex + 1 + idx, 0, sourceDOM.children[currentIndex]);\n            }\n\n            if (destDomTree === sourcesDomTree && before) {\n                sourceDOM.children.splice(sources[0].cellIndex + sources.length, sources.length);\n            } else {\n                sourceDOM.children.splice(sources[0].cellIndex, sources.length);\n            }\n            destRow = destContainer.find(\"tr\").eq(destColumn.rowIndex);\n            destThs = destRow.find(\">th.k-header\").eq(destColumn.cellIndex);\n\n            if (destThs.length && ths[0] !== destThs[0]) {\n                ths[before ? \"insertBefore\" : \"insertAfter\"](destThs);\n            }\n\n            if (depth >= sources[0].rowIndex + 1 && depth != 1) {\n                sourcesLeafs = [];\n                for (idx = 0; idx < sources.length; idx++) {\n                    if (sources[idx].columns) {\n                        sourcesLeafs = sourcesLeafs.concat(sources[idx].columns);\n                    }\n                }\n                if (!sourcesLeafs.length) {\n                    return;\n                }\n\n                destLeafs = [];\n\n                for (idx = 0; idx < destSources.length; idx++) {\n                    if (destSources[idx].columns) {\n                        destLeafs = destLeafs.concat(destSources[idx].columns);\n                    }\n                }\n\n                if (!destLeafs.length && (destContainer !== sourcesContainer || (destColumn.cellIndex - sources[0].cellIndex > 1 || sources[0].cellIndex - destColumn.cellIndex > 1))) {\n                    reorderTaget = findReorderTarget(this.columns, destColumn, sources[0], before, this.columns);\n\n                    destLeafs = [reorderTaget];\n                    if (!reorderTaget && sourcesLeafs.length && destContainer.find(\"tr\").length > sources[0].rowIndex + 1) {\n                        this._insertTree(sourcesLeafs, sourcesContainer, sourcesDomTree, destContainer, destDomTree);\n                        return;\n                    }\n                }\n\n                if (!destLeafs.length) {\n                    return;\n                }\n\n                this._reorderTrees(destLeafs, destContainer, destDomTree, sourcesLeafs, sourcesContainer, sourcesDomTree, before, depth);\n            }\n        },\n\n        _insertTree: function(columns, sourcesContainer, sourcesDomTree, destContainer, destDomTree) {\n            var leafs = [];\n            var row;\n            var ths = $();\n            var domTr;\n\n            row = sourcesContainer.find(\"tr\").eq(columns[0].rowIndex);\n            domTr = sourcesDomTree.children[columns[0].rowIndex];\n\n            for (var idx = 0; idx < columns.length; idx++) {\n                if (columns[idx].columns) {\n                    leafs = leafs.concat(columns[idx].columns);\n                }\n                destDomTree.children[columns[0].rowIndex].children.splice(idx, 0, domTr.children[columns[idx].rowIndex]);\n                ths = ths.add(row.find(\">th.k-header\").eq(columns[idx].cellIndex));\n            }\n\n            sourcesDomTree.children[columns[0].rowIndex].children.splice(columns[0].cellIndex, columns.length);\n            destContainer.find(\"tr\").eq(columns[0].rowIndex).append(ths);\n\n            if (leafs.length) {\n                this._insertTree(leafs, sourcesContainer, sourcesDomTree, destContainer, destDomTree);\n            }\n        },\n\n        _reorderHeader: function(destColumn, column, before) {\n            var sourcesDepth = column.columns ? depth([column]) : 1;\n            var targetDepth = destColumn.columns ? depth([destColumn]) : 1;\n            var sourceLocked = isLocked(column);\n            var destLocked = isLocked(destColumn);\n            var destContainer = destLocked ? this.lockedHeader : this.thead;\n            var sourcesContainer = sourceLocked ? this.lockedHeader : this.thead;\n            var destDomTree = destLocked ? this._lockedHeaderTree : this._headerTree;\n            var sourcesDomTree = sourceLocked ? this._lockedHeaderTree : this._headerTree;\n            var rowsToAdd;\n            var destRows = destContainer.find(\"tr:not(.k-filter-row)\");\n            var destTarget;\n\n\n            if (sourcesDepth === targetDepth || sourcesDepth < destRows.length ) {\n                this._reorderTrees([destColumn], destContainer, destDomTree , [column], sourcesContainer ,sourcesDomTree, before, sourcesDepth);\n                updateRowSpans(destContainer, destDomTree);\n                removeEmptyRows(sourcesContainer, sourcesDomTree);\n            } else {\n                if (destContainer !== sourcesContainer) {\n                    rowsToAdd = sourcesDepth - destRows.length;\n\n                    destRows.each(function(idx) {\n                        var cells = this.cells;\n                        for (var i = 0; i < cells.length; i++) {\n                            if (cells[i].colSpan <= 1 && cells[i].attributes.rowspan) {\n                                destDomTree.children[idx].children[i].attr.rowSpan += rowsToAdd;\n                                cells[i].rowSpan += rowsToAdd;\n                            }\n                        }\n                    });\n\n                    for (var j = 0; j < rowsToAdd; j++) {\n                       destDomTree.children.push(kendoDomElement(\"tr\", { \"role\": \"row\" }));\n                       if (destContainer.is(\"thead\")) {\n                           destTarget = destContainer;\n                       } else {\n                          destTarget = destContainer.find(\"thead\");\n                       }\n\n                       if (this._hasFilterRow()) {\n                           $(\"<tr role='row'></tr>\").insertBefore(destTarget.find('tr.k-filter-row'));\n                       } else {\n                           destTarget.append(\"<tr role='row'></tr>\");\n                       }\n                    }\n                }\n\n                this._reorderTrees([destColumn], destContainer, destDomTree , [column], sourcesContainer ,sourcesDomTree, before, sourcesDepth);\n                removeEmptyRows(sourcesContainer, sourcesDomTree);\n             }\n        },\n\n        reorderColumn: function(destIndex, column, before) {\n            var lockChanged;\n            var parent = column.parentColumn;\n            var columns = parent ? parent.columns : this.columns;\n            var sourceIndex = inArray(column, columns);\n            var destColumn = columns[destIndex];\n            var isLocked = !!destColumn.locked;\n            var hasMultiColumnHeaders = grep(this.columns, function(item) {\n                return item.columns !== undefined;\n            }).length > 0;\n            var nonLockedColumnsLength = nonLockedColumns(columns).length;\n\n            if (sourceIndex === destIndex) {\n                return;\n            }\n\n            if (isLocked && !column.locked && nonLockedColumnsLength == 1) {\n                return;\n            }\n\n            if (!isLocked && column.locked && (columns.length - nonLockedColumnsLength == 1)) {\n                return;\n            }\n\n            if (before === undefined) {\n                before = destIndex < sourceIndex;\n            }\n\n            if (hasMultiColumnHeaders) {\n                this._reorderHeader(destColumn, column, before);\n            }\n\n            lockChanged = !!column.locked;\n            lockChanged = lockChanged != isLocked;\n\n            column.locked = isLocked;\n            columns.splice(before ? destIndex : destIndex + 1, 0, column);\n            columns.splice(sourceIndex < destIndex ? sourceIndex : sourceIndex + 1, 1);\n            this._setColumnDataIndexes(leafColumns(this.columns));\n            this._clearColsCache();\n            this._renderCols();\n\n            //reorder column header manually\n            if (!hasMultiColumnHeaders) {\n                var ths = $(this.lockedHeader).add(this.thead).find(\"tr:not(.k-filter-row) th\");\n\n                ths.eq(sourceIndex)[before ? \"insertBefore\" : \"insertAfter\"](ths.eq(destIndex));\n\n                var dom = this._headerTree.children[0].children;\n                if (this._hasLockedColumns) {\n                    dom = this._lockedHeaderTree.children[0].children.concat(dom);\n                }\n                dom.splice(before ? destIndex : destIndex + 1, 0, dom[sourceIndex]);\n                dom.splice(sourceIndex < destIndex ? sourceIndex : sourceIndex + 1, 1);\n                if (this._hasLockedColumns) {\n                    this._lockedHeaderTree.children[0].children = dom.splice(0, lockedColumns(columns).length);\n                    this._headerTree.children[0].children = dom;\n                }\n            } else {\n                if (this.lockedHeader) {\n                    columns = nonLockedColumns(this.columns);\n                    this._prepareColumns([{ rowSpan: 1, cells: [], index: 0 }], columns);\n                    columns = lockedColumns(this.columns);\n                    this._prepareColumns([{ rowSpan: 1, cells: [], index: 0 }], columns);\n                } else {\n                    this._prepareColumns([{ rowSpan: 1, cells: [], index: 0 }], this.columns);\n                }\n            }\n            this._updateColumnCellIndex();\n            this._applyLockedContainersWidth();\n            this._syncLockedHeaderHeight();\n            this._updateFirstColumnClass();\n\n            if (this._hasFilterRow()) {\n                this._updateFilterThs(before, column, destColumn);\n            }\n\n            this.refresh();\n\n            if (!lockChanged) {\n                return;\n            }\n\n            if (isLocked) {\n                this.trigger(COLUMNLOCK, {\n                    column: column\n                });\n            } else {\n                this.trigger(COLUMNUNLOCK, {\n                    column: column\n                });\n            }\n        },\n\n        lockColumn: function(column) {\n            var columns = this.columns;\n\n            if (typeof column == \"number\") {\n                column = columns[column];\n            } else {\n                column = grep(columns, function(item) {\n                    return item.field === column;\n                })[0];\n            }\n\n            if (!column || column.hidden) {\n                return;\n            }\n\n            var index = lockedColumns(columns).length - 1;\n            this.reorderColumn(index, column, false);\n        },\n\n        unlockColumn: function(column) {\n            var columns = this.columns;\n\n            if (typeof column == \"number\") {\n                column = columns[column];\n            } else {\n                column = grep(columns, function(item) {\n                    return item.field === column;\n                })[0];\n            }\n\n            if (!column || column.hidden) {\n                return;\n            }\n\n            var index = lockedColumns(columns).length;\n            this.reorderColumn(index, column, true);\n        },\n\n        _columnMenu: function() {\n            var ths = $(this.lockedHeader).add(this.thead).find(\"th\");\n            var columns = this.columns;\n            var options = this.options;\n            var columnMenu = options.columnMenu;\n            var column, menu, menuOptions, sortable, filterable;\n            var initHandler = this._columnMenuInit.bind(this);\n            var openHandler = this._columnMenuOpen.bind(this);\n            var hasLockableColumns = grep(this.columns, function(item) {\n                return item.lockable !== false;\n            }).length > 0;\n            var hasMultiColumnHeaders = grep(this.columns, function(item) {\n                return item.columns !== undefined;\n            }).length > 0;\n\n            if (hasMultiColumnHeaders) {\n                columns = leafColumns(columns);\n                if (this.lockedHeader) {\n                    ths = sortCells(leafDataCells(this.lockedHeader.find(\">table>thead\")).add(leafDataCells(this.thead)));\n                } else {\n                    ths = leafDataCells(this.thead);\n                }\n            } else {\n                ths = $(this.lockedHeader).add(this.thead).find(\"tr:not(.k-filter-row) th\");\n            }\n\n            if (!columnMenu) {\n                return;\n            }\n\n            if (typeof columnMenu == \"boolean\") {\n                columnMenu = {};\n            }\n\n            for (var i = 0; i < ths.length; i++) {\n                column = columns[i];\n                if (!column.field) {\n                    continue;\n                }\n\n                menu = ths.eq(i).data(\"kendoColumnMenu\");\n                if (menu) {\n                    menu.destroy();\n                }\n\n                sortable = false;\n                if (column.sortable !== false && columnMenu.sortable !== false && options.sortable !== false) {\n                    sortable = extend({}, options.sortable, { compare: (column.sortable || {}).compare });\n                }\n\n                filterable = false;\n                if (options.filterable && column.filterable !== false && columnMenu.filterable !== false) {\n                    filterable = extend({ pane: this.pane }, column.filterable, options.filterable);\n                }\n\n                menuOptions = {\n                    dataSource: this.dataSource,\n                    values: column.values,\n                    columns: columnMenu.columns,\n                    sortable: sortable,\n                    filterable: filterable,\n                    messages: columnMenu.messages,\n                    owner: this,\n                    closeCallback: closeCallback,\n                    init: initHandler,\n                    open: openHandler,\n                    pane: this.pane,\n                    hasLockableColumns: lockedColumns(columns).length > 0 && hasLockableColumns && !hasMultiColumnHeaders,\n                    appendTo: DOT + classNames.headerCellInner\n                };\n\n                if (options.$angular) {\n                    menuOptions.$angular = options.$angular;\n                }\n\n                ths.eq(i).kendoColumnMenu(menuOptions);\n            }\n        },\n\n        _columnMenuInit: function(e) {\n            this.trigger(COLUMNMENUINIT, { field: e.field, container: e.container });\n        },\n\n        _columnMenuOpen: function(e) {\n            this.trigger(COLUMNMENUOPEN, { field: e.field, container: e.container });\n        },\n\n        _pageable: function() {\n            var that = this,\n                wrapper,\n                pageable = that.options.pageable;\n\n            if (pageable) {\n                wrapper = that.wrapper.children(\"div.k-grid-pager\");\n\n                if (!wrapper.length) {\n                    wrapper = $('<div class=\"k-pager-wrap k-grid-pager\"/>').appendTo(that.wrapper);\n                }\n\n                that._destroyPager();\n\n                if (typeof pageable === \"object\" && pageable instanceof kendo.ui.TreeListPager) {\n                    that.pager = pageable;\n                } else if (that.dataSource && !that.dataSource.options.serverPaging) {\n                    that._createPager(wrapper);\n                }\n\n                if (that.pager) {\n                    that.pager.bind(PAGE_CHANGE, function(e) {\n                        if (that.trigger(PAGE, { page: e.index })) {\n                            e.preventDefault();\n                        }\n                    });\n                }\n            }\n        },\n\n        _createPager: function(element, options) {\n            var that = this;\n\n            that.pager = new TreeListPager(element, extend({}, that.options.pageable, {\n                dataSource: that.dataSource,\n                navigatable: that.options.navigatable\n            }, options));\n        },\n\n        _destroyPager: function() {\n            if (this.pager) {\n                this.pager.destroy();\n                this.pager = null;\n            }\n        },\n\n        _isPageable: function() {\n            var that = this;\n            return that.options.pageable && (!that.dataSource || (that.dataSource && that.dataSource._isPageable()));\n        },\n\n        _togglePagerVisibility: function() {\n            var that = this;\n            var pageable = that.options.pageable;\n\n            if (pageable && (isPlainObject(pageable) || pageable instanceof TreeListPager) && pageable.alwaysVisible === false) {\n                that.wrapper.find(\".k-grid-pager\").toggle((that.dataSource.collapsedTotal() || 0) >= that.dataSource.pageSize());\n            }\n        }\n    });\n\n    function closeCallback(element) {\n        focusTable(element.closest(\"table\"), true);\n    }\n\n    function isInputElement(element) {\n       return $(element).is(\":button,a,:input,a>.k-icon,textarea,span.k-select,span.k-icon,span.k-link,.k-input,.k-multiselect-wrap,.k-tool-icon\");\n    }\n\n    function isLocked(column) {\n        if (!column.parentColumn) {\n            return !!column.locked;\n        }\n        return !!isLocked(column.parentColumn);\n    }\n\n    function findParentColumnWithChildren(columns, index, source, rtl) {\n        var target;\n        var locked = !!source.locked;\n        var targetLocked;\n\n        do {\n            target = columns[index];\n            index += rtl ? 1 : -1;\n            targetLocked = !!target.locked;\n        } while (target && index > -1 && index < columns.length && target != source && !target.columns && targetLocked === locked);\n\n        return target;\n    }\n\n    function findReorderTarget(columns, target, source, before, masterColumns) {\n        if (target.columns) {\n            target = target.columns;\n            return target[before ? 0 : target.length - 1];\n        } else {\n            var parent = columnParent(target, columns);\n            var parentColumns;\n\n            if (parent) {\n                parentColumns = parent.columns;\n            } else {\n                parentColumns = columns;\n            }\n\n            var index = inArray(target, parentColumns);\n            if (index === 0 && before && parentColumns.length !== 1) {\n                index++;\n            } else if (index == parentColumns.length - 1 && !before && index !== 0) {\n                index--;\n            } else if (index > 0 || (index === 0 && !before && index !== 0)) {\n                index += before ? -1 : 1;\n            }\n\n            var sourceIndex = inArray(source, parentColumns);\n            target = findParentColumnWithChildren(parentColumns, index, source, sourceIndex > index);\n            var targetIndex = inArray(target, masterColumns);\n            if (target.columns && (!targetIndex || targetIndex === parentColumns.length - 1)) {\n                return null;\n            }\n\n            if (target && target != source && target.columns) {\n                return findReorderTarget(columns, target, source, before, masterColumns);\n            }\n        }\n        return null;\n    }\n\n    function leafColumns(columns) {\n        var result = [];\n\n        for (var idx = 0; idx < columns.length; idx++) {\n            if (!columns[idx].columns) {\n                result.push(columns[idx]);\n                continue;\n            }\n            result = result.concat(leafColumns(columns[idx].columns));\n        }\n\n        return result;\n    }\n\n    function getColumnsFields(columns) {\n        var result = [];\n        columns = leafColumns(columns);\n\n        for (var idx = 0; idx < columns.length; idx++) {\n            if (typeof columns[idx] === \"string\") {\n                result.push(columns[idx]);\n            } else if (columns[idx].field) {\n                result.push(columns[idx].field);\n            }\n        }\n        return result;\n    }\n\n    function visibleChildColumns(columns) {\n        return grep(columns, function(column) {\n            return !column.hidden;\n        });\n    }\n\n    function isVisible(column) {\n        return visibleColumns([column]).length > 0;\n    }\n\n    function visibleColumns(columns) {\n        return grep(columns, function(column) {\n            var result = !column.hidden;\n            if (result && column.columns) {\n                result = visibleColumns(column.columns).length > 0;\n            }\n            return result;\n        });\n    }\n\n    function normalizeColumns(columns, hide, parentIds) {\n        return map(columns, function(column) {\n            var hidden;\n\n            column.parentIds = parentIds;\n\n            if (!isVisible(column) || hide) {\n                hidden = true;\n            }\n\n            var uid = kendo.guid();\n            column.headerAttributes = extend({ headers: parentIds }, column.headerAttributes);\n            if (!column.headerAttributes || !column.headerAttributes.id) {\n                column.headerAttributes = extend({ id: uid }, column.headerAttributes);\n            } else {\n                uid = column.headerAttributes.id;\n            }\n\n            if (column.columns) {\n                column.columns = normalizeColumns(column.columns, hidden, parentIds ? (parentIds + \" \" + uid) : uid);\n            }\n            return extend({ hidden: hidden }, column);\n        });\n    }\n\n    function flatColumnsInDomOrder(columns) {\n        var result = flatColumns(lockedColumns(columns));\n        return result.concat(flatColumns(nonLockedColumns(columns)));\n    }\n\n    function targetParentContainerIndex(flatColumns, columns, sourceIndex, targetIndex) {\n        var column = flatColumns[sourceIndex];\n        var target = flatColumns[targetIndex];\n\n        var parent = columnParent(column, columns);\n        columns = parent ? parent.columns : columns;\n\n        return inArray(target, columns);\n    }\n\n    function parentColumnsCells(cell) {\n        var container = cell.closest(\"table\");\n        var result = $().add(cell);\n\n        var row = cell.closest(\"tr\");\n        var headerRows = container.find(\"tr\");\n        var level = headerRows.index(row);\n        if (level > 0) {\n            var parent = headerRows.eq(level - 1);\n            var parentCellsWithChildren = parent.find(\"th\").filter(function() {\n                return !$(this).attr(\"rowspan\");\n            });\n\n            var offset = 0;\n            var index = row.find(\"th\").index(cell);\n\n            var prevCells = cell.prevAll().filter(function() {\n                return this.colSpan > 1;\n            });\n\n            for (var idx = 0; idx < prevCells.length; idx++) {\n                offset += prevCells[idx].colSpan || 1;\n            }\n\n            index += Math.max(offset - 1, 0);\n\n            offset = 0;\n            for (idx = 0; idx < parentCellsWithChildren.length; idx++) {\n                var parentCell = parentCellsWithChildren.eq(idx);\n                if (parentCell.attr(\"data-colspan\")) {\n                    offset += parentCell[0].getAttribute(\"data-colspan\");\n                } else {\n                    offset += 1;\n                }\n                if (index >= idx && index < offset) {\n                    result = parentColumnsCells(parentCell).add(result);\n                    break;\n                }\n            }\n        }\n        return result;\n    }\n\n    function childColumnsCells(cell) {\n        var container = cell.closest(\"thead\");\n        var result = $().add(cell);\n\n        var row = cell.closest(\"tr\");\n        var headerRows = container.find(\"tr\");\n        var level = headerRows.index(row) + cell[0].rowSpan;\n        var colSpanAttr = kendo.attr(\"colspan\");\n\n        if (level <= headerRows.length - 1) {\n            var child = row.next();\n            var prevCells = cell.prevAll();\n\n            var idx;\n\n            prevCells = prevCells.filter(function() {\n                return !this.rowSpan || this.rowSpan === 1;\n            });\n\n            var offset = 0;\n\n            for (idx = 0; idx < prevCells.length; idx++) {\n                offset += parseInt(prevCells.eq(idx).attr(colSpanAttr), 10) || 1;\n            }\n\n            var cells = child.find(\"th\");\n            var colSpan = parseInt(cell.attr(colSpanAttr), 10) || 1;\n\n            idx = 0;\n\n            while (idx < colSpan) {\n                child = cells.eq(idx + offset);\n                result = result.add(childColumnsCells(child));\n                var value = parseInt(child.attr(colSpanAttr), 10);\n                if (value > 1) {\n                    colSpan -= value - 1;\n                }\n                idx++;\n            }\n        }\n\n        return result;\n    }\n\n    function columnParent(column, columns) {\n        var parents = [];\n        columnParents(column, columns, parents);\n        return parents[parents.length - 1];\n    }\n\n    function columnParents(column, columns, parents) {\n        parents = parents || [];\n\n        for (var idx = 0; idx < columns.length; idx++) {\n            if (column === columns[idx]) {\n                return true;\n            } else if (columns[idx].columns) {\n                var inserted = parents.length;\n                parents.push(columns[idx]);\n                if (!columnParents(column, columns[idx].columns, parents)) {\n                    parents.splice(inserted, parents.length - inserted);\n                } else {\n                    return true;\n                }\n            }\n        }\n        return false;\n    }\n\n    function flatColumns(columns) {\n        var result = [];\n        var children = [];\n        for (var idx = 0; idx < columns.length; idx++) {\n            result.push(columns[idx]);\n            if (columns[idx].columns) {\n                children = children.concat(columns[idx].columns);\n            }\n\n        }\n        if (children.length) {\n            result = result.concat(flatColumns(children));\n        }\n        return result;\n    }\n\n    function columnPosition(column, columns, row, cellCounts) {\n        var result;\n        var idx;\n\n        row = row || 0;\n        cellCounts = cellCounts || {};\n        cellCounts[row] = cellCounts[row] || 0;\n\n        for (idx = 0; idx < columns.length; idx++) {\n           if (columns[idx] == column) {\n                result = { cell: cellCounts[row], row: row };\n                break;\n           } else if (columns[idx].columns) {\n               result = columnPosition(column, columns[idx].columns, row + 1, cellCounts);\n               if (result) {\n                    break;\n               }\n           }\n\n           cellCounts[row]++;\n        }\n        return result;\n    }\n\n    function updateCellIndex(thead, columns, offset) {\n        offset = offset || 0;\n\n        var position;\n        var cell;\n        var allColumns = columns;\n        columns = leafColumns(columns);\n\n        var cells = {};\n        var rows = thead.find(\">tr:not(.k-filter-row)\");\n\n        var filter = function() {\n            var el = $(this);\n            return !el.hasClass(\"k-group-cell\") && !el.hasClass(\"k-hierarchy-cell\");\n        };\n\n        for (var idx = 0, length = columns.length; idx < length; idx++) {\n            position = columnPosition(columns[idx], allColumns);\n\n            if (!cells[position.row]) {\n                cells[position.row] = rows.eq(position.row)\n                    .find(\".k-header\")\n                    .filter(filter);\n            }\n\n            cell = cells[position.row].eq(position.cell);\n            cell.attr(kendo.attr(\"index\"), offset + idx);\n        }\n\n        return columns.length;\n    }\n\n    function depth(columns) {\n        var result = 1;\n        var max = 0;\n\n        for (var idx = 0; idx < columns.length; idx++) {\n            if (columns[idx].columns) {\n                var temp = depth(columns[idx].columns);\n                if (temp > max) {\n                    max = temp;\n                }\n            }\n        }\n        return result + max;\n    }\n\n    function lockedColumns(columns) {\n        return grep(columns, is(\"locked\"));\n    }\n\n    function nonLockedColumns(columns) {\n        return grep(columns, not(is(\"locked\")));\n    }\n\n    function updateRowSpans(container, containerDOMtree) {\n        var rows = container.find(\"tr:not(.k-filter-row)\");\n        var length = rows.length;\n\n        rows.each(function(idx) {\n            var cells = this.cells;\n            for (var i = 0; i < cells.length; i++) {\n                if (cells[i].colSpan <= 1 && cells[i].attributes.rowspan) {\n                    containerDOMtree.children[idx].children[i].attr.rowSpan = length - idx;\n                    cells[i].rowSpan = length - idx;\n                }\n            }\n        });\n    }\n\n    function removeEmptyRows(container, containerDOMtree) {\n        var rows = container.find(\"tr\");\n        var emptyRows = [];\n\n        rows.filter(function(idx) {\n            var shouldRemove = !$(this).children().length;\n            if (shouldRemove) {\n                emptyRows.push(idx);\n\n            }\n            return shouldRemove;\n        }).remove();\n\n        for (var i = emptyRows.length - 1; i >= 0; i--) {\n            containerDOMtree.children.splice(emptyRows[i], 1);\n        }\n\n        updateRowSpans(container, containerDOMtree);\n    }\n\n    function focusTable(table, direct) {\n      if (direct === true) {\n         table = $(table);\n         var scrollTop, scrollLeft;\n         scrollTop = table.parent().scrollTop();\n         scrollLeft = kendo.scrollLeft(table.parent());\n\n        kendo.focusElement(table);\n\n        kendo.scrollLeft(table.parent().scrollTop(scrollTop), scrollLeft);\n\n      } else {\n         $(table).one(\"focusin\", function(e) { e.preventDefault(); }).trigger(\"focus\");\n      }\n    }\n\n    function adjustRowHeight(row1, row2) {\n       var height;\n       var offsetHeight1 = row1.offsetHeight;\n       var offsetHeight2 = row2.offsetHeight;\n\n       if (offsetHeight1 > offsetHeight2) {\n           height = offsetHeight1 + \"px\";\n       } else if (offsetHeight1 < offsetHeight2) {\n           height = offsetHeight2 + \"px\";\n       }\n\n       if (height) {\n           row1.style.height = row2.style.height = height;\n       }\n    }\n\n    function isColumnEditable(column, model) {\n        if (!column || !model || !column.field || column.selectable || column.command || (column.editable && !column.editable(model))) {\n            return false;\n        }\n\n        return (column.field && model.editable && model.editable(column.field));\n    }\n\n    function isDirtyColumn(column, model) {\n        var field = (column || {}).field || \"\";\n        return (model.dirty && model.dirtyFields && model.dirtyFields[field] && isColumnEditable(column, model));\n    }\n\n    function isUndefined(value) {\n        return typeof(value) === \"undefined\";\n    }\n\n    function isNumber(value) {\n        return typeof value === \"number\" && !isNaN(value);\n    }\n\n    if (kendo.ExcelMixin) {\n        kendo.ExcelMixin.extend(TreeList.prototype);\n    }\n\n    if (kendo.PDFMixin) {\n        kendo.PDFMixin.extend(TreeList.prototype);\n\n       TreeList.prototype._drawPDF = function(progress) {\n           var treeList = this;\n\n           if (treeList.options.pdf.paperSize && treeList.options.pdf.paperSize != \"auto\") {\n               return treeList._drawPDF_autoPageBreak(progress);\n           }\n\n           var result = new $.Deferred();\n           var dataSource = treeList.dataSource;\n           var allPages = treeList.options.pdf.allPages;\n\n           this._initPDFProgress(progress);\n\n           // This group will be our document containing all pages\n           var doc = new kendo.drawing.Group();\n           var startingPage = dataSource.page();\n\n           function resolve() {\n               if (allPages && startingPage !== undefined) {\n                   dataSource.unbind(\"change\", exportPage);\n                   dataSource.one(\"change\", function() {\n                       result.resolve(doc);\n                   });\n\n                   dataSource.page(startingPage);\n               } else {\n                   result.resolve(doc);\n               }\n           }\n\n           function exportPage() {\n                treeList._drawPDFShadow({\n                    width: treeList.wrapper.width()\n                }, {\n                    avoidLinks: treeList.options.pdf.avoidLinks\n                })\n                .done(function(group) {\n                    var pageNum = dataSource.page();\n                    var totalPages = allPages ? dataSource.totalPages() : 1;\n\n                    var args = {\n                        page: group,\n                        pageNumber: pageNum,\n                        progress: pageNum / totalPages,\n                        totalPages: totalPages\n                    };\n\n                    progress.notify(args);\n                    doc.append(args.page);\n\n                    if (pageNum < totalPages) {\n                        dataSource.page(pageNum + 1);\n                    } else {\n                        resolve();\n                    }\n                })\n                .fail(function(err) {\n                    result.reject(err);\n                });\n            }\n\n            if (allPages) {\n                dataSource.bind(\"change\", exportPage);\n                dataSource.page(1);\n            } else {\n                exportPage();\n            }\n\n            return result.promise();\n        };\n\n        TreeList.prototype._initPDFProgress = function(deferred) {\n            var loading = $(\"<div class='k-loading-pdf-mask'><div class='k-loading-color'></div></div>\");\n            loading.prepend(this.wrapper.clone().css({\n                position: \"absolute\", top: 0, left: 0\n            }));\n\n            this.wrapper.append(loading);\n\n            var progressBar = $(\"<div class='k-loading-pdf-progress'>\")\n                .appendTo(loading)\n                .kendoProgressBar({\n                    type: \"chunk\",\n                    chunkCount: 10,\n                    min: 0,\n                    max: 1,\n                    value: 0\n                }).data(\"kendoProgressBar\");\n\n            deferred.progress(function(e) {\n                progressBar.value(e.progress);\n            })\n            .always(function() {\n                kendo.destroy(loading);\n                loading.remove();\n            });\n        };\n\n        TreeList.prototype._drawPDF_autoPageBreak = function(progress) {\n            var treeList = this;\n            var result = new $.Deferred();\n            var dataSource = treeList.dataSource;\n            var allPages = treeList.options.pdf.allPages;\n            var origBody = treeList.wrapper.find('table[role=\"treeList\"] > tbody');\n            var cont = $(\"<div>\")\n                .css({ position: \"absolute\", left: -10000, top: -10000 });\n            var clone = treeList.wrapper.clone().css({\n                height: \"auto\", width: \"auto\"\n            }).appendTo(cont);\n            clone.find(\".k-grid-content\").css({ height: \"auto\", width: \"auto\", overflow: \"visible\" });\n            clone.find('table[role=\"treeList\"], .k-grid-footer table').css({ height: \"auto\", width: \"100%\", overflow: \"visible\" });\n            clone.find(\".k-grid-pager, .k-grid-toolbar, .k-grouping-header\").remove();\n            clone.find(\".k-grid-header, .k-grid-footer\").css({ paddingRight: 0 });\n\n            this._initPDFProgress(progress);\n\n            var body = clone.find('table[role=\"treeList\"] > tbody').empty();\n            var startingPage = dataSource.page();\n\n            function resolve() {\n                if (allPages && startingPage !== undefined) {\n                    dataSource.one(\"change\", draw);\n                    dataSource.page(startingPage);\n                } else {\n                    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