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✏️ Editing: jsgrid.js

/*
 * jsGrid v1.5.3 (http://js-grid.com)
 * (c) 2016 Artem Tabalin
 * Licensed under MIT (https://github.com/tabalinas/jsgrid/blob/master/LICENSE)
 */

(function(window, $, undefined) {

var JSGRID = "JSGrid",
        JSGRID_DATA_KEY = JSGRID,
        JSGRID_ROW_DATA_KEY = "JSGridItem",
        JSGRID_EDIT_ROW_DATA_KEY = "JSGridEditRow",

SORT_ORDER_ASC = "asc",
        SORT_ORDER_DESC = "desc",

FIRST_PAGE_PLACEHOLDER = "{first}",
        PAGES_PLACEHOLDER = "{pages}",
        PREV_PAGE_PLACEHOLDER = "{prev}",
        NEXT_PAGE_PLACEHOLDER = "{next}",
        LAST_PAGE_PLACEHOLDER = "{last}",
        PAGE_INDEX_PLACEHOLDER = "{pageIndex}",
        PAGE_COUNT_PLACEHOLDER = "{pageCount}",
        ITEM_COUNT_PLACEHOLDER = "{itemCount}",

EMPTY_HREF = "javascript:void(0);";

var getOrApply = function(value, context) {
        if($.isFunction(value)) {
            return value.apply(context, $.makeArray(arguments).slice(2));
        }
        return value;
    };

var normalizePromise = function(promise) {
        var d = $.Deferred();

if(promise && promise.then) {
            promise.then(function() {
                d.resolve.apply(d, arguments);
            }, function() {
                d.reject.apply(d, arguments);
            });
        } else {
            d.resolve(promise);
        }

return d.promise();
    };

var defaultController = {
        loadData: $.noop,
        insertItem: $.noop,
        updateItem: $.noop,
        deleteItem: $.noop
    };

function Grid(element, config) {
        var $element = $(element);

$element.data(JSGRID_DATA_KEY, this);

this._container = $element;

this.data = [];
        this.fields = [];

this._editingRow = null;
        this._sortField = null;
        this._sortOrder = SORT_ORDER_ASC;
        this._firstDisplayingPage = 1;

this._init(config);
        this.render();
    }

Grid.prototype = {
        width: "auto",
        height: "auto",
        updateOnResize: true,

rowClass: $.noop,
        rowRenderer: null,

rowClick: function(args) {
            if(this.editing) {
                this.editItem($(args.event.target).closest("tr"));
            }
        },
        rowDoubleClick: $.noop,

noDataContent: "Not found",
        noDataRowClass: "jsgrid-nodata-row",

heading: true,
        headerRowRenderer: null,
        headerRowClass: "jsgrid-header-row",
        headerCellClass: "jsgrid-header-cell",

filtering: false,
        filterRowRenderer: null,
        filterRowClass: "jsgrid-filter-row",

inserting: false,
        insertRowRenderer: null,
        insertRowClass: "jsgrid-insert-row",

editing: false,
        editRowRenderer: null,
        editRowClass: "jsgrid-edit-row",

confirmDeleting: true,
        deleteConfirm: "Are you sure?",

selecting: true,
        selectedRowClass: "jsgrid-selected-row",
        oddRowClass: "jsgrid-row",
        evenRowClass: "jsgrid-alt-row",
        cellClass: "jsgrid-cell",

sorting: false,
        sortableClass: "jsgrid-header-sortable",
        sortAscClass: "jsgrid-header-sort jsgrid-header-sort-asc",
        sortDescClass: "jsgrid-header-sort jsgrid-header-sort-desc",

paging: false,
        pagerContainer: null,
        pageIndex: 1,
        pageSize: 20,
        pageButtonCount: 15,
        pagerFormat: "Pages: {first} {prev} {pages} {next} {last} &nbsp;&nbsp; {pageIndex} of {pageCount}",
        pagePrevText: "Prev",
        pageNextText: "Next",
        pageFirstText: "First",
        pageLastText: "Last",
        pageNavigatorNextText: "...",
        pageNavigatorPrevText: "...",
        pagerContainerClass: "jsgrid-pager-container",
        pagerClass: "jsgrid-pager",
        pagerNavButtonClass: "jsgrid-pager-nav-button",
        pagerNavButtonInactiveClass: "jsgrid-pager-nav-inactive-button",
        pageClass: "jsgrid-pager-page",
        currentPageClass: "jsgrid-pager-current-page",

customLoading: false,
        pageLoading: false,

autoload: false,
        controller: defaultController,

loadIndication: true,
        loadIndicationDelay: 500,
        loadMessage: "Please, wait...",
        loadShading: true,

invalidMessage: "Invalid data entered!",

invalidNotify: function(args) {
            var messages = $.map(args.errors, function(error) {
                return error.message || null;
            });

window.alert([this.invalidMessage].concat(messages).join("\n"));
        },

onInit: $.noop,
        onRefreshing: $.noop,
        onRefreshed: $.noop,
        onPageChanged: $.noop,
        onItemDeleting: $.noop,
        onItemDeleted: $.noop,
        onItemInserting: $.noop,
        onItemInserted: $.noop,
        onItemEditing: $.noop,
        onItemUpdating: $.noop,
        onItemUpdated: $.noop,
        onItemInvalid: $.noop,
        onDataLoading: $.noop,
        onDataLoaded: $.noop,
        onOptionChanging: $.noop,
        onOptionChanged: $.noop,
        onError: $.noop,

invalidClass: "jsgrid-invalid",

containerClass: "jsgrid",
        tableClass: "jsgrid-table",
        gridHeaderClass: "jsgrid-grid-header",
        gridBodyClass: "jsgrid-grid-body",

_init: function(config) {
            $.extend(this, config);
            this._initLoadStrategy();
            this._initController();
            this._initFields();
            this._attachWindowLoadResize();
            this._attachWindowResizeCallback();
            this._callEventHandler(this.onInit)
        },

loadStrategy: function() {
            return this.pageLoading
                ? new jsGrid.loadStrategies.PageLoadingStrategy(this)
                : new jsGrid.loadStrategies.DirectLoadingStrategy(this);
        },

_initLoadStrategy: function() {
            this._loadStrategy = getOrApply(this.loadStrategy, this);
        },

_initController: function() {
            this._controller = $.extend({}, defaultController, getOrApply(this.controller, this));
        },

renderTemplate: function(source, context, config) {
            args = [];
            for(var key in config) {
                args.push(config[key]);
            }

args.unshift(source, context);

source = getOrApply.apply(null, args);
            return (source === undefined || source === null) ? "" : source;
        },

loadIndicator: function(config) {
            return new jsGrid.LoadIndicator(config);
        },

validation: function(config) {
            return jsGrid.Validation && new jsGrid.Validation(config);
        },

_initFields: function() {
            var self = this;
            self.fields = $.map(self.fields, function(field) {
                if($.isPlainObject(field)) {
                    var fieldConstructor = (field.type && jsGrid.fields[field.type]) || jsGrid.Field;
                    field = new fieldConstructor(field);
                }
                field._grid = self;
                return field;
            });
        },

_attachWindowLoadResize: function() {
            $(window).on("load", $.proxy(this._refreshSize, this));
        },

_attachWindowResizeCallback: function() {
            if(this.updateOnResize) {
                $(window).on("resize", $.proxy(this._refreshSize, this));
            }
        },

_detachWindowResizeCallback: function() {
            $(window).off("resize", this._refreshSize);
        },

option: function(key, value) {
            var optionChangingEventArgs,
                optionChangedEventArgs;

if(arguments.length === 1)
                return this[key];

optionChangingEventArgs = {
                option: key,
                oldValue: this[key],
                newValue: value
            };
            this._callEventHandler(this.onOptionChanging, optionChangingEventArgs);

this._handleOptionChange(optionChangingEventArgs.option, optionChangingEventArgs.newValue);

optionChangedEventArgs = {
                option: optionChangingEventArgs.option,
                value: optionChangingEventArgs.newValue
            };
            this._callEventHandler(this.onOptionChanged, optionChangedEventArgs);
        },

fieldOption: function(field, key, value) {
            field = this._normalizeField(field);

if(arguments.length === 2)
                return field[key];

field[key] = value;
            this._renderGrid();
        },

_handleOptionChange: function(name, value) {
            this[name] = value;

switch(name) {
                case "width":
                case "height":
                    this._refreshSize();
                    break;
                case "rowClass":
                case "rowRenderer":
                case "rowClick":
                case "rowDoubleClick":
                case "noDataRowClass":
                case "noDataContent":
                case "selecting":
                case "selectedRowClass":
                case "oddRowClass":
                case "evenRowClass":
                    this._refreshContent();
                    break;
                case "pageButtonCount":
                case "pagerFormat":
                case "pagePrevText":
                case "pageNextText":
                case "pageFirstText":
                case "pageLastText":
                case "pageNavigatorNextText":
                case "pageNavigatorPrevText":
                case "pagerClass":
                case "pagerNavButtonClass":
                case "pageClass":
                case "currentPageClass":
                case "pagerRenderer":
                    this._refreshPager();
                    break;
                case "fields":
                    this._initFields();
                    this.render();
                    break;
                case "data":
                case "editing":
                case "heading":
                case "filtering":
                case "inserting":
                case "paging":
                    this.refresh();
                    break;
                case "loadStrategy":
                case "pageLoading":
                    this._initLoadStrategy();
                    this.search();
                    break;
                case "pageIndex":
                    this.openPage(value);
                    break;
                case "pageSize":
                    this.refresh();
                    this.search();
                    break;
                case "editRowRenderer":
                case "editRowClass":
                    this.cancelEdit();
                    break;
                case "updateOnResize":
                    this._detachWindowResizeCallback();
                    this._attachWindowResizeCallback();
                    break;
                case "invalidNotify":
                case "invalidMessage":
                    break;
                default:
                    this.render();
                    break;
            }
        },

destroy: function() {
            this._detachWindowResizeCallback();
            this._clear();
            this._container.removeData(JSGRID_DATA_KEY);
        },

render: function() {
            this._renderGrid();
            return this.autoload ? this.loadData() : $.Deferred().resolve().promise();
        },

_renderGrid: function() {
            this._clear();

this._container.addClass(this.containerClass)
                .css("position", "relative")
                .append(this._createHeader())
                .append(this._createBody());

this._pagerContainer = this._createPagerContainer();
            this._loadIndicator = this._createLoadIndicator();
            this._validation = this._createValidation();

this.refresh();
        },

_createLoadIndicator: function() {
            return getOrApply(this.loadIndicator, this, {
                message: this.loadMessage,
                shading: this.loadShading,
                container: this._container
            });
        },

_createValidation: function() {
            return getOrApply(this.validation, this);
        },

_clear: function() {
            this.cancelEdit();

clearTimeout(this._loadingTimer);

this._pagerContainer && this._pagerContainer.empty();

this._container.empty()
                .css({ position: "", width: "", height: "" });
        },

_createHeader: function() {
            var $headerRow = this._headerRow = this._createHeaderRow(),
                $filterRow = this._filterRow = this._createFilterRow(),
                $insertRow = this._insertRow = this._createInsertRow();

var $headerGrid = this._headerGrid = $("<table>").addClass(this.tableClass)
                .append($headerRow)
                .append($filterRow)
                .append($insertRow);

var $header = this._header = $("<div>").addClass(this.gridHeaderClass)
                .addClass(this._scrollBarWidth() ? "jsgrid-header-scrollbar" : "")
                .append($headerGrid);

return $header;
        },

_createBody: function() {
            var $content = this._content = $("<tbody>");

var $bodyGrid = this._bodyGrid = $("<table>").addClass(this.tableClass)
                .append($content);

var $body = this._body = $("<div>").addClass(this.gridBodyClass)
                .append($bodyGrid)
                .on("scroll", $.proxy(function(e) {
                    this._header.scrollLeft(e.target.scrollLeft);
                }, this));

return $body;
        },

_createPagerContainer: function() {
            var pagerContainer = this.pagerContainer || $("<div>").appendTo(this._container);
            return $(pagerContainer).addClass(this.pagerContainerClass);
        },

_eachField: function(callBack) {
            var self = this;
            $.each(this.fields, function(index, field) {
                if(field.visible) {
                    callBack.call(self, field, index);
                }
            });
        },

_createHeaderRow: function() {
            if($.isFunction(this.headerRowRenderer))
                return $(this.renderTemplate(this.headerRowRenderer, this));

var $result = $("<tr>").addClass(this.headerRowClass);

this._eachField(function(field, index) {
                var $th = this._prepareCell("<th>", field, "headercss", this.headerCellClass)
                    .append(this.renderTemplate(field.headerTemplate, field))
                    .appendTo($result);

if(this.sorting && field.sorting) {
                    $th.addClass(this.sortableClass)
                        .on("click", $.proxy(function() {
                            this.sort(index);
                        }, this));
                }
            });

return $result;
        },

_prepareCell: function(cell, field, cssprop, cellClass) {
            return $(cell).css("width", field.width)
                .addClass(cellClass || this.cellClass)
                .addClass((cssprop && field[cssprop]) || field.css)
                .addClass(field.align ? ("jsgrid-align-" + field.align) : "");
        },

_createFilterRow: function() {
            if($.isFunction(this.filterRowRenderer))
                return $(this.renderTemplate(this.filterRowRenderer, this));

var $result = $("<tr>").addClass(this.filterRowClass);

this._eachField(function(field) {
                this._prepareCell("<td>", field, "filtercss")
                    .append(this.renderTemplate(field.filterTemplate, field))
                    .appendTo($result);
            });

return $result;
        },

_createInsertRow: function() {
            if($.isFunction(this.insertRowRenderer))
                return $(this.renderTemplate(this.insertRowRenderer, this));

var $result = $("<tr>").addClass(this.insertRowClass);

this._eachField(function(field) {
                this._prepareCell("<td>", field, "insertcss")
                    .append(this.renderTemplate(field.insertTemplate, field))
                    .appendTo($result);
            });

return $result;
        },

_callEventHandler: function(handler, eventParams) {
            handler.call(this, $.extend(eventParams, {
                grid: this
            }));

return eventParams;
        },

reset: function() {
            this._resetSorting();
            this._resetPager();
            return this._loadStrategy.reset();
        },

_resetPager: function() {
            this._firstDisplayingPage = 1;
            this._setPage(1);
        },

_resetSorting: function() {
            this._sortField = null;
            this._sortOrder = SORT_ORDER_ASC;
            this._clearSortingCss();
        },

refresh: function() {
            this._callEventHandler(this.onRefreshing);

this.cancelEdit();

this._refreshHeading();
            this._refreshFiltering();
            this._refreshInserting();
            this._refreshContent();
            this._refreshPager();
            this._refreshSize();

this._callEventHandler(this.onRefreshed);
        },

_refreshHeading: function() {
            this._headerRow.toggle(this.heading);
        },

_refreshFiltering: function() {
            this._filterRow.toggle(this.filtering);
        },

_refreshInserting: function() {
            this._insertRow.toggle(this.inserting);
        },

_refreshContent: function() {
            var $content = this._content;
            $content.empty();

if(!this.data.length) {
                $content.append(this._createNoDataRow());
                return this;
            }

var indexFrom = this._loadStrategy.firstDisplayIndex();
            var indexTo = this._loadStrategy.lastDisplayIndex();

for(var itemIndex = indexFrom; itemIndex < indexTo; itemIndex++) {
                var item = this.data[itemIndex];
                $content.append(this._createRow(item, itemIndex));
            }
        },

_createNoDataRow: function() {
            var amountOfFields = 0;
            this._eachField(function() {
                amountOfFields++;
            });

return $("<tr>").addClass(this.noDataRowClass)
                .append($("<td>").addClass(this.cellClass).attr("colspan", amountOfFields)
                    .append(this.renderTemplate(this.noDataContent, this)));
        },

_createRow: function(item, itemIndex) {
            var $result;

if($.isFunction(this.rowRenderer)) {
                $result = this.renderTemplate(this.rowRenderer, this, { item: item, itemIndex: itemIndex });
            } else {
                $result = $("<tr>");
                this._renderCells($result, item);
            }

$result.addClass(this._getRowClasses(item, itemIndex))
                .data(JSGRID_ROW_DATA_KEY, item)
                .on("click", $.proxy(function(e) {
                    this.rowClick({
                        item: item,
                        itemIndex: itemIndex,
                        event: e
                    });
                }, this))
                .on("dblclick", $.proxy(function(e) {
                    this.rowDoubleClick({
                        item: item,
                        itemIndex: itemIndex,
                        event: e
                    });
                }, this));

if(this.selecting) {
                this._attachRowHover($result);
            }

return $result;
        },

_getRowClasses: function(item, itemIndex) {
            var classes = [];
            classes.push(((itemIndex + 1) % 2) ? this.oddRowClass : this.evenRowClass);
            classes.push(getOrApply(this.rowClass, this, item, itemIndex));
            return classes.join(" ");
        },

_attachRowHover: function($row) {
            var selectedRowClass = this.selectedRowClass;
            $row.hover(function() {
                    $(this).addClass(selectedRowClass);
                },
                function() {
                    $(this).removeClass(selectedRowClass);
                }
            );
        },

_renderCells: function($row, item) {
            this._eachField(function(field) {
                $row.append(this._createCell(item, field));
            });
            return this;
        },

_createCell: function(item, field) {
            var $result;
            var fieldValue = this._getItemFieldValue(item, field);

return this._prepareCell($result, field);
        },

_getItemFieldValue: function(item, field) {
            var props = field.name.split('.');
            var result = item[props.shift()];

while(result && props.length) {
                result = result[props.shift()];
            }

return result;
        },

_setItemFieldValue: function(item, field, value) {
            var props = field.name.split('.');
            var current = item;
            var prop = props[0];

while(current && props.length) {
                item = current;
                prop = props.shift();
                current = item[prop];
            }

if(!current) {
                while(props.length) {
                    item = item[prop] = {};
                    prop = props.shift();
                }
            }

item[prop] = value;
        },

sort: function(field, order) {
            if($.isPlainObject(field)) {
                order = field.order;
                field = field.field;
            }

this._clearSortingCss();
            this._setSortingParams(field, order);
            this._setSortingCss();
            return this._loadStrategy.sort();
        },

_clearSortingCss: function() {
            this._headerRow.find("th")
                .removeClass(this.sortAscClass)
                .removeClass(this.sortDescClass);
        },

_setSortingParams: function(field, order) {
            field = this._normalizeField(field);
            order = order || ((this._sortField === field) ? this._reversedSortOrder(this._sortOrder) : SORT_ORDER_ASC);

this._sortField = field;
            this._sortOrder = order;
        },

_normalizeField: function(field) {
            if($.isNumeric(field)) {
                return this.fields[field];
            }

if(typeof field === "string") {
                return $.grep(this.fields, function(f) {
                    return f.name === field;
                })[0];
            }

return field;
        },

_reversedSortOrder: function(order) {
            return (order === SORT_ORDER_ASC ? SORT_ORDER_DESC : SORT_ORDER_ASC);
        },

_setSortingCss: function() {
            var fieldIndex = this._visibleFieldIndex(this._sortField);

this._headerRow.find("th").eq(fieldIndex)
                .addClass(this._sortOrder === SORT_ORDER_ASC ? this.sortAscClass : this.sortDescClass);
        },

_visibleFieldIndex: function(field) {
            return $.inArray(field, $.grep(this.fields, function(f) { return f.visible; }));
        },

_sortData: function() {
            var sortFactor = this._sortFactor(),
                sortField = this._sortField;

if(sortField) {
                this.data.sort(function(item1, item2) {
                    return sortFactor * sortField.sortingFunc(item1[sortField.name], item2[sortField.name]);
                });
            }
        },

_sortFactor: function() {
            return this._sortOrder === SORT_ORDER_ASC ? 1 : -1;
        },

_itemsCount: function() {
            return this._loadStrategy.itemsCount();
        },

_pagesCount: function() {
            var itemsCount = this._itemsCount(),
                pageSize = this.pageSize;
            return Math.floor(itemsCount / pageSize) + (itemsCount % pageSize ? 1 : 0);
        },

_refreshPager: function() {
            var $pagerContainer = this._pagerContainer;
            $pagerContainer.empty();

if(this.paging) {
                $pagerContainer.append(this._createPager());
            }

var showPager = this.paging && this._pagesCount() > 1;
            $pagerContainer.toggle(showPager);
        },

_createPager: function() {
            var $result;

if($.isFunction(this.pagerRenderer)) {
                $result = $(this.pagerRenderer({
                    pageIndex: this.pageIndex,
                    pageCount: this._pagesCount()
                }));
            } else {
                $result = $("<div>").append(this._createPagerByFormat());
            }

$result.addClass(this.pagerClass);

return $result;
        },

_createPagerByFormat: function() {
            var pageIndex = this.pageIndex,
                pageCount = this._pagesCount(),
                itemCount = this._itemsCount(),
                pagerParts = this.pagerFormat.split(" ");

return $.map(pagerParts, $.proxy(function(pagerPart) {
                var result = pagerPart;

if(pagerPart === PAGES_PLACEHOLDER) {
                    result = this._createPages();
                } else if(pagerPart === FIRST_PAGE_PLACEHOLDER) {
                    result = this._createPagerNavButton(this.pageFirstText, 1, pageIndex > 1);
                } else if(pagerPart === PREV_PAGE_PLACEHOLDER) {
                    result = this._createPagerNavButton(this.pagePrevText, pageIndex - 1, pageIndex > 1);
                } else if(pagerPart === NEXT_PAGE_PLACEHOLDER) {
                    result = this._createPagerNavButton(this.pageNextText, pageIndex + 1, pageIndex < pageCount);
                } else if(pagerPart === LAST_PAGE_PLACEHOLDER) {
                    result = this._createPagerNavButton(this.pageLastText, pageCount, pageIndex < pageCount);
                } else if(pagerPart === PAGE_INDEX_PLACEHOLDER) {
                    result = pageIndex;
                } else if(pagerPart === PAGE_COUNT_PLACEHOLDER) {
                    result = pageCount;
                } else if(pagerPart === ITEM_COUNT_PLACEHOLDER) {
                    result = itemCount;
                }

return $.isArray(result) ? result.concat([" "]) : [result, " "];
            }, this));
        },

_createPages: function() {
            var pageCount = this._pagesCount(),
                pageButtonCount = this.pageButtonCount,
                firstDisplayingPage = this._firstDisplayingPage,
                pages = [];

if(firstDisplayingPage > 1) {
                pages.push(this._createPagerPageNavButton(this.pageNavigatorPrevText, this.showPrevPages));
            }

for(var i = 0, pageNumber = firstDisplayingPage; i < pageButtonCount && pageNumber <= pageCount; i++, pageNumber++) {
                pages.push(pageNumber === this.pageIndex
                    ? this._createPagerCurrentPage()
                    : this._createPagerPage(pageNumber));
            }

if((firstDisplayingPage + pageButtonCount - 1) < pageCount) {
                pages.push(this._createPagerPageNavButton(this.pageNavigatorNextText, this.showNextPages));
            }

return pages;
        },

_createPagerNavButton: function(text, pageIndex, isActive) {
            return this._createPagerButton(text, this.pagerNavButtonClass + (isActive ? "" : " " + this.pagerNavButtonInactiveClass),
                isActive ? function() { this.openPage(pageIndex); } : $.noop);
        },

_createPagerPageNavButton: function(text, handler) {
            return this._createPagerButton(text, this.pagerNavButtonClass, handler);
        },

_createPagerPage: function(pageIndex) {
            return this._createPagerButton(pageIndex, this.pageClass, function() {
                this.openPage(pageIndex);
            });
        },

_createPagerButton: function(text, css, handler) {
            var $link = $("<a>").attr("href", EMPTY_HREF)
                .html(text)
                .on("click", $.proxy(handler, this));

return $("<span>").addClass(css).append($link);
        },

_createPagerCurrentPage: function() {
            return $("<span>")
                .addClass(this.pageClass)
                .addClass(this.currentPageClass)
                .text(this.pageIndex);
        },

_refreshSize: function() {
            this._refreshHeight();
            this._refreshWidth();
        },

_refreshWidth: function() {
            var width = (this.width === "auto") ? this._getAutoWidth() : this.width;

this._container.width(width);
        },

_getAutoWidth: function() {
            var $headerGrid = this._headerGrid,
                $header = this._header;

$headerGrid.width("auto");

var contentWidth = $headerGrid.outerWidth();
            var borderWidth = $header.outerWidth() - $header.innerWidth();

$headerGrid.width("");

return contentWidth + borderWidth;
        },

_scrollBarWidth: (function() {
            var result;

return function() {
                if(result === undefined) {
                    var $ghostContainer = $("<div style='width:50px;height:50px;overflow:hidden;position:absolute;top:-10000px;left:-10000px;'></div>");
                    var $ghostContent = $("<div style='height:100px;'></div>");
                    $ghostContainer.append($ghostContent).appendTo("body");
                    var width = $ghostContent.innerWidth();
                    $ghostContainer.css("overflow-y", "auto");
                    var widthExcludingScrollBar = $ghostContent.innerWidth();
                    $ghostContainer.remove();
                    result = width - widthExcludingScrollBar;
                }
                return result;
            };
        })(),

_refreshHeight: function() {
            var container = this._container,
                pagerContainer = this._pagerContainer,
                height = this.height,
                nonBodyHeight;

container.height(height);

if(height !== "auto") {
                height = container.height();

nonBodyHeight = this._header.outerHeight(true);
                if(pagerContainer.parents(container).length) {
                    nonBodyHeight += pagerContainer.outerHeight(true);
                }

this._body.outerHeight(height - nonBodyHeight);
            }
        },

showPrevPages: function() {
            var firstDisplayingPage = this._firstDisplayingPage,
                pageButtonCount = this.pageButtonCount;

this._firstDisplayingPage = (firstDisplayingPage > pageButtonCount) ? firstDisplayingPage - pageButtonCount : 1;

this._refreshPager();
        },

showNextPages: function() {
            var firstDisplayingPage = this._firstDisplayingPage,
                pageButtonCount = this.pageButtonCount,
                pageCount = this._pagesCount();

this._firstDisplayingPage = (firstDisplayingPage + 2 * pageButtonCount > pageCount)
                ? pageCount - pageButtonCount + 1
                : firstDisplayingPage + pageButtonCount;

this._refreshPager();
        },

openPage: function(pageIndex) {
            if(pageIndex < 1 || pageIndex > this._pagesCount())
                return;

this._setPage(pageIndex);
            this._loadStrategy.openPage(pageIndex);
        },

_setPage: function(pageIndex) {
            var firstDisplayingPage = this._firstDisplayingPage,
                pageButtonCount = this.pageButtonCount;

this.pageIndex = pageIndex;

if(pageIndex < firstDisplayingPage) {
                this._firstDisplayingPage = pageIndex;
            }

if(pageIndex > firstDisplayingPage + pageButtonCount - 1) {
                this._firstDisplayingPage = pageIndex - pageButtonCount + 1;
            }

this._callEventHandler(this.onPageChanged, {
                pageIndex: pageIndex
            });
        },

_controllerCall: function(method, param, isCanceled, doneCallback) {
            if(isCanceled)
                return $.Deferred().reject().promise();

this._showLoading();

var controller = this._controller;
            if(!controller || !controller[method]) {
                throw Error("controller has no method '" + method + "'");
            }

return normalizePromise(controller[method](param))
                .done($.proxy(doneCallback, this))
                .fail($.proxy(this._errorHandler, this))
                .always($.proxy(this._hideLoading, this));
        },

_errorHandler: function() {
            this._callEventHandler(this.onError, {
                args: $.makeArray(arguments)
            });
        },

_showLoading: function() {
            if(!this.loadIndication)
                return;

clearTimeout(this._loadingTimer);

this._loadingTimer = setTimeout($.proxy(function() {
                this._loadIndicator.show();
            }, this), this.loadIndicationDelay);
        },

_hideLoading: function() {
            if(!this.loadIndication)
                return;

clearTimeout(this._loadingTimer);
            this._loadIndicator.hide();
        },

search: function(filter) {
            this._resetSorting();
            this._resetPager();
            return this.loadData(filter);
        },

loadData: function(filter) {
            filter = filter || (this.filtering ? this.getFilter() : {});

$.extend(filter, this._loadStrategy.loadParams(), this._sortingParams());

var args = this._callEventHandler(this.onDataLoading, {
                filter: filter
            });

return this._controllerCall("loadData", filter, args.cancel, function(loadedData) {
                if(!loadedData)
                    return;

this._loadStrategy.finishLoad(loadedData);

this._callEventHandler(this.onDataLoaded, {
                    data: loadedData
                });
            });
        },

getFilter: function() {
            var result = {};
            this._eachField(function(field) {
                if(field.filtering) {
                    this._setItemFieldValue(result, field, field.filterValue());
                }
            });
            return result;
        },

_sortingParams: function() {
            if(this.sorting && this._sortField) {
                return {
                    sortField: this._sortField.name,
                    sortOrder: this._sortOrder
                };
            }
            return {};
        },

getSorting: function() {
            var sortingParams = this._sortingParams();
            return {
                field: sortingParams.sortField,
                order: sortingParams.sortOrder
            };
        },

clearFilter: function() {
            var $filterRow = this._createFilterRow();
            this._filterRow.replaceWith($filterRow);
            this._filterRow = $filterRow;
            return this.search();
        },

insertItem: function(item) {
            var insertingItem = item || this._getValidatedInsertItem();

if(!insertingItem)
                return $.Deferred().reject().promise();

var args = this._callEventHandler(this.onItemInserting, {
                item: insertingItem
            });

return this._controllerCall("insertItem", insertingItem, args.cancel, function(insertedItem) {
                insertedItem = insertedItem || insertingItem;
                this._loadStrategy.finishInsert(insertedItem);

this._callEventHandler(this.onItemInserted, {
                    item: insertedItem
                });
            });
        },

_getValidatedInsertItem: function() {
            var item = this._getInsertItem();
            return this._validateItem(item, this._insertRow) ? item : null;
        },

_getInsertItem: function() {
            var result = {};
            this._eachField(function(field) {
                if(field.inserting) {
                    this._setItemFieldValue(result, field, field.insertValue());
                }
            });
            return result;
        },

_validateItem: function(item, $row) {
            var validationErrors = [];

var args = {
                item: item,
                itemIndex: this._rowIndex($row),
                row: $row
            };

this._eachField(function(field) {
                if(!field.validate ||
                   ($row === this._insertRow && !field.inserting) ||
                   ($row === this._getEditRow() && !field.editing))
                    return;

var fieldValue = this._getItemFieldValue(item, field);

var errors = this._validation.validate($.extend({
                    value: fieldValue,
                    rules: field.validate
                }, args));

this._setCellValidity($row.children().eq(this._visibleFieldIndex(field)), errors);

if(!errors.length)
                    return;

validationErrors.push.apply(validationErrors,
                    $.map(errors, function(message) {
                        return { field: field, message: message };
                    }));
            });

if(!validationErrors.length)
                return true;

var invalidArgs = $.extend({
                errors: validationErrors
            }, args);
            this._callEventHandler(this.onItemInvalid, invalidArgs);
            this.invalidNotify(invalidArgs);

return false;
        },

_setCellValidity: function($cell, errors) {
            $cell
                .toggleClass(this.invalidClass, !!errors.length)
                .attr("title", errors.join("\n"));
        },

clearInsert: function() {
            var insertRow = this._createInsertRow();
            this._insertRow.replaceWith(insertRow);
            this._insertRow = insertRow;
            this.refresh();
        },

editItem: function(item) {
            var $row = this.rowByItem(item);
            if($row.length) {
                this._editRow($row);
            }
        },

rowByItem: function(item) {
            if(item.jquery || item.nodeType)
                return $(item);

return this._content.find("tr").filter(function() {
                return $.data(this, JSGRID_ROW_DATA_KEY) === item;
            });
        },

_editRow: function($row) {
            if(!this.editing)
                return;

var item = $row.data(JSGRID_ROW_DATA_KEY);

var args = this._callEventHandler(this.onItemEditing, {
                row: $row,
                item: item,
                itemIndex: this._itemIndex(item)
            });

if(args.cancel)
                return;

if(this._editingRow) {
                this.cancelEdit();
            }

var $editRow = this._createEditRow(item);

this._editingRow = $row;
            $row.hide();
            $editRow.insertBefore($row);
            $row.data(JSGRID_EDIT_ROW_DATA_KEY, $editRow);
        },

_createEditRow: function(item) {
            if($.isFunction(this.editRowRenderer)) {
                return $(this.renderTemplate(this.editRowRenderer, this, { item: item, itemIndex: this._itemIndex(item) }));
            }

var $result = $("<tr>").addClass(this.editRowClass);

this._eachField(function(field) {
                var fieldValue = this._getItemFieldValue(item, field);

this._prepareCell("<td>", field, "editcss")
                    .append(this.renderTemplate(field.editTemplate || "", field, { value: fieldValue, item: item }))
                    .appendTo($result);
            });

return $result;
        },

updateItem: function(item, editedItem) {
            if(arguments.length === 1) {
                editedItem = item;
            }

var $row = item ? this.rowByItem(item) : this._editingRow;
            editedItem = editedItem || this._getValidatedEditedItem();

if(!editedItem)
                return;

return this._updateRow($row, editedItem);
        },

_getValidatedEditedItem: function() {
            var item = this._getEditedItem();
            return this._validateItem(item, this._getEditRow()) ? item : null;
        },

_updateRow: function($updatingRow, editedItem) {
            var updatingItem = $updatingRow.data(JSGRID_ROW_DATA_KEY),
                updatingItemIndex = this._itemIndex(updatingItem),
                updatedItem = $.extend(true, {}, updatingItem, editedItem);

var args = this._callEventHandler(this.onItemUpdating, {
                row: $updatingRow,
                item: updatedItem,
                itemIndex: updatingItemIndex,
                previousItem: updatingItem
            });

return this._controllerCall("updateItem", updatedItem, args.cancel, function(loadedUpdatedItem) {
                var previousItem = $.extend(true, {}, updatingItem);
                updatedItem = loadedUpdatedItem || $.extend(true, updatingItem, editedItem);

var $updatedRow = this._finishUpdate($updatingRow, updatedItem, updatingItemIndex);

this._callEventHandler(this.onItemUpdated, {
                    row: $updatedRow,
                    item: updatedItem,
                    itemIndex: updatingItemIndex,
                    previousItem: previousItem
                });
            });
        },

_rowIndex: function(row) {
            return this._content.children().index($(row));
        },

_itemIndex: function(item) {
            return $.inArray(item, this.data);
        },

_finishUpdate: function($updatingRow, updatedItem, updatedItemIndex) {
            this.cancelEdit();
            this.data[updatedItemIndex] = updatedItem;

var $updatedRow = this._createRow(updatedItem, updatedItemIndex);
            $updatingRow.replaceWith($updatedRow);
            return $updatedRow;
        },

_getEditedItem: function() {
            var result = {};
            this._eachField(function(field) {
                if(field.editing) {
                    this._setItemFieldValue(result, field, field.editValue());
                }
            });
            return result;
        },

cancelEdit: function() {
            if(!this._editingRow)
                return;

this._getEditRow().remove();
            this._editingRow.show();
            this._editingRow = null;
        },

_getEditRow: function() {
            return this._editingRow && this._editingRow.data(JSGRID_EDIT_ROW_DATA_KEY);
        },

deleteItem: function(item) {
            var $row = this.rowByItem(item);

if(!$row.length)
                return;

if(this.confirmDeleting && !window.confirm(getOrApply(this.deleteConfirm, this, $row.data(JSGRID_ROW_DATA_KEY))))
                return;

return this._deleteRow($row);
        },

_deleteRow: function($row) {
            var deletingItem = $row.data(JSGRID_ROW_DATA_KEY),
                deletingItemIndex = this._itemIndex(deletingItem);

var args = this._callEventHandler(this.onItemDeleting, {
                row: $row,
                item: deletingItem,
                itemIndex: deletingItemIndex
            });

return this._controllerCall("deleteItem", deletingItem, args.cancel, function() {
                this._loadStrategy.finishDelete(deletingItem, deletingItemIndex);

this._callEventHandler(this.onItemDeleted, {
                    row: $row,
                    item: deletingItem,
                    itemIndex: deletingItemIndex
                });
            });
        }
    };

$.fn.jsGrid = function(config) {
        var args = $.makeArray(arguments),
            methodArgs = args.slice(1),
            result = this;

this.each(function() {
            var $element = $(this),
                instance = $element.data(JSGRID_DATA_KEY),
                methodResult;

if(instance) {
                if(typeof config === "string") {
                    methodResult = instance[config].apply(instance, methodArgs);
                    if(methodResult !== undefined && methodResult !== instance) {
                        result = methodResult;
                        return false;
                    }
                } else {
                    instance._detachWindowResizeCallback();
                    instance._init(config);
                    instance.render();
                }
            } else {
                new Grid($element, config);
            }
        });

return result;
    };

var fields = {};

var setDefaults = function(config) {
        var componentPrototype;

if($.isPlainObject(config)) {
            componentPrototype = Grid.prototype;
        } else {
            componentPrototype = fields[config].prototype;
            config = arguments[1] || {};
        }

$.extend(componentPrototype, config);
    };

var locales = {};

var locale = function(lang) {
        var localeConfig = $.isPlainObject(lang) ? lang : locales[lang];

if(!localeConfig)
            throw Error("unknown locale " + lang);

setLocale(jsGrid, localeConfig);
    };

var setLocale = function(obj, localeConfig) {
        $.each(localeConfig, function(field, value) {
            if($.isPlainObject(value)) {
                setLocale(obj[field] || obj[field[0].toUpperCase() + field.slice(1)], value);
                return;
            }

if(obj.hasOwnProperty(field)) {
                obj[field] = value;
            } else {
                obj.prototype[field] = value;
            }
        });
    };

window.jsGrid = {
        Grid: Grid,
        fields: fields,
        setDefaults: setDefaults,
        locales: locales,
        locale: locale,
        version: '1.5.3'
    };

}(window, jQuery));

(function(jsGrid, $, undefined) {

function LoadIndicator(config) {
        this._init(config);
    }

LoadIndicator.prototype = {

container: "body",
        message: "Loading...",
        shading: true,

zIndex: 1000,
        shaderClass: "jsgrid-load-shader",
        loadPanelClass: "jsgrid-load-panel",

_init: function(config) {
            $.extend(true, this, config);

this._initContainer();
            this._initShader();
            this._initLoadPanel();
        },

_initContainer: function() {
            this._container = $(this.container);
        },

_initShader: function() {
            if(!this.shading)
                return;

this._shader = $("<div>").addClass(this.shaderClass)
                .hide()
                .css({
                    position: "absolute",
                    top: 0,
                    right: 0,
                    bottom: 0,
                    left: 0,
                    zIndex: this.zIndex
                })
                .appendTo(this._container);
        },

_initLoadPanel: function() {
            this._loadPanel = $("<div>").addClass(this.loadPanelClass)
                .text(this.message)
                .hide()
                .css({
                    position: "absolute",
                    top: "50%",
                    left: "50%",
                    zIndex: this.zIndex
                })
                .appendTo(this._container);
        },

show: function() {
            var $loadPanel = this._loadPanel.show();

var actualWidth = $loadPanel.outerWidth();
            var actualHeight = $loadPanel.outerHeight();

$loadPanel.css({
                marginTop: -actualHeight / 2,
                marginLeft: -actualWidth / 2
            });

this._shader.show();
        },

hide: function() {
            this._loadPanel.hide();
            this._shader.hide();
        }

};

jsGrid.LoadIndicator = LoadIndicator;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

function DirectLoadingStrategy(grid) {
        this._grid = grid;
    }

DirectLoadingStrategy.prototype = {

firstDisplayIndex: function() {
            var grid = this._grid;
            return grid.option("paging") ? (grid.option("pageIndex") - 1) * grid.option("pageSize") : 0;
        },

lastDisplayIndex: function() {
            var grid = this._grid;
            var itemsCount = grid.option("data").length;

return grid.option("paging")
                ? Math.min(grid.option("pageIndex") * grid.option("pageSize"), itemsCount)
                : itemsCount;
        },

itemsCount: function() {
            return this._grid.option("data").length;
        },

openPage: function(index) {
            this._grid.refresh();
        },

loadParams: function() {
            return {};
        },

sort: function() {
            this._grid._sortData();
            this._grid.refresh();
            return $.Deferred().resolve().promise();
        },

reset: function() {
            this._grid.refresh();
            return $.Deferred().resolve().promise();
        },

finishLoad: function(loadedData) {
            this._grid.option("data", loadedData);
        },

finishInsert: function(insertedItem) {
            var grid = this._grid;
            grid.option("data").push(insertedItem);
            grid.refresh();
        },

finishDelete: function(deletedItem, deletedItemIndex) {
            var grid = this._grid;
            grid.option("data").splice(deletedItemIndex, 1);
            grid.reset();
        }
    };

function PageLoadingStrategy(grid) {
        this._grid = grid;
        this._itemsCount = 0;
    }

PageLoadingStrategy.prototype = {

firstDisplayIndex: function() {
            return 0;
        },

lastDisplayIndex: function() {
            return this._grid.option("data").length;
        },

itemsCount: function() {
            return this._itemsCount;
        },

openPage: function(index) {
            this._grid.loadData();
        },

loadParams: function() {
            var grid = this._grid;
            return {
                pageIndex: grid.option("pageIndex"),
                pageSize: grid.option("pageSize")
            };
        },

reset: function() {
            return this._grid.loadData();
        },

sort: function() {
            return this._grid.loadData();
        },

finishLoad: function(loadedData) {
            this._itemsCount = loadedData.itemsCount;
            this._grid.option("data", loadedData.data);
        },

finishInsert: function(insertedItem) {
            this._grid.search();
        },

finishDelete: function(deletedItem, deletedItemIndex) {
            this._grid.search();
        }
    };

jsGrid.loadStrategies = {
        DirectLoadingStrategy: DirectLoadingStrategy,
        PageLoadingStrategy: PageLoadingStrategy
    };

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

var isDefined = function(val) {
        return typeof(val) !== "undefined" && val !== null;
    };

var sortStrategies = {
        string: function(str1, str2) {
            if(!isDefined(str1) && !isDefined(str2))
                return 0;

if(!isDefined(str1))
                return -1;

if(!isDefined(str2))
                return 1;

return ("" + str1).localeCompare("" + str2);
        },

number: function(n1, n2) {
            return n1 - n2;
        },

date: function(dt1, dt2) {
            return dt1 - dt2;
        },

numberAsString: function(n1, n2) {
            return parseFloat(n1) - parseFloat(n2);
        }
    };

jsGrid.sortStrategies = sortStrategies;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

function Validation(config) {
        this._init(config);
    }

Validation.prototype = {

_init: function(config) {
            $.extend(true, this, config);
        },

validate: function(args) {
            var errors = [];

$.each(this._normalizeRules(args.rules), function(_, rule) {
                if(rule.validator(args.value, args.item, rule.param))
                    return;

var errorMessage = $.isFunction(rule.message) ? rule.message(args.value, args.item) : rule.message;
                errors.push(errorMessage);
            });

return errors;
        },

_normalizeRules: function(rules) {
            if(!$.isArray(rules))
                rules = [rules];

return $.map(rules, $.proxy(function(rule) {
                return this._normalizeRule(rule);
            }, this));
        },

_normalizeRule: function(rule) {
            if(typeof rule === "string")
                rule = { validator: rule };

if($.isFunction(rule))
                rule = { validator: rule };

if($.isPlainObject(rule))
                rule = $.extend({}, rule);
            else
                throw Error("wrong validation config specified");

if($.isFunction(rule.validator))
                return rule;

return this._applyNamedValidator(rule, rule.validator);
        },

_applyNamedValidator: function(rule, validatorName) {
            delete rule.validator;

var validator = validators[validatorName];
            if(!validator)
                throw Error("unknown validator \"" + validatorName + "\"");

if($.isFunction(validator)) {
                validator = { validator: validator };
            }

return $.extend({}, validator, rule);
        }
    };

jsGrid.Validation = Validation;

var validators = {
        required: {
            message: "Field is required",
            validator: function(value) {
                return value !== undefined && value !== null && value !== "";
            }
        },

rangeLength: {
            message: "Field value length is out of the defined range",
            validator: function(value, _, param) {
                return value.length >= param[0] && value.length <= param[1];
            }
        },

minLength: {
            message: "Field value is too short",
            validator: function(value, _, param) {
                return value.length >= param;
            }
        },

maxLength: {
            message: "Field value is too long",
            validator: function(value, _, param) {
                return value.length <= param;
            }
        },

pattern: {
            message: "Field value is not matching the defined pattern",
            validator: function(value, _, param) {
                if(typeof param === "string") {
                    param = new RegExp("^(?:" + param + ")$");
                }
                return param.test(value);
            }
        },

range: {
            message: "Field value is out of the defined range",
            validator: function(value, _, param) {
                return value >= param[0] && value <= param[1];
            }
        },

min: {
            message: "Field value is too small",
            validator: function(value, _, param) {
                return value >= param;
            }
        },

max: {
            message: "Field value is too large",
            validator: function(value, _, param) {
                return value <= param;
            }
        }
    };

jsGrid.validators = validators;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

function Field(config) {
        $.extend(true, this, config);
        this.sortingFunc = this._getSortingFunc();
    }

Field.prototype = {
        name: "",
        title: null,
        css: "",
        align: "",
        width: 100,

visible: true,
        filtering: true,
        inserting: true,
        editing: true,
        sorting: true,
        sorter: "string", // name of SortStrategy or function to compare elements

headerTemplate: function() {
            return (this.title === undefined || this.title === null) ? this.name : this.title;
        },

itemTemplate: function(value, item) {
            return value;
        },

filterTemplate: function() {
            return "";
        },

insertTemplate: function() {
            return "";
        },

editTemplate: function(value, item) {
            this._value = value;
            return this.itemTemplate(value, item);
        },

filterValue: function() {
            return "";
        },

insertValue: function() {
            return "";
        },

editValue: function() {
            return this._value;
        },

_getSortingFunc: function() {
            var sorter = this.sorter;

if($.isFunction(sorter)) {
                return sorter;
            }

if(typeof sorter === "string") {
                return jsGrid.sortStrategies[sorter];
            }

throw Error("wrong sorter for the field \"" + this.name + "\"!");
        }
    };

jsGrid.Field = Field;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

var Field = jsGrid.Field;

function TextField(config) {
        Field.call(this, config);
    }

TextField.prototype = new Field({

autosearch: true,
		readOnly: false,

filterTemplate: function() {
            if(!this.filtering)
                return "";

var grid = this._grid,
                $result = this.filterControl = this._createTextBox();

if(this.autosearch) {
                $result.on("keypress", function(e) {
                    if(e.which === 13) {
                        grid.search();
                        e.preventDefault();
                    }
                });
            }

return $result;
        },

insertTemplate: function() {
            if(!this.inserting)
                return "";

return this.insertControl = this._createTextBox();
        },

editTemplate: function(value) {
            if(!this.editing)
                return this.itemTemplate.apply(this, arguments);

var $result = this.editControl = this._createTextBox();
            $result.val(value);
            return $result;
        },

filterValue: function() {
            return this.filterControl.val();
        },

insertValue: function() {
            return this.insertControl.val();
        },

editValue: function() {
            return this.editControl.val();
        },

_createTextBox: function() {
            return $("<input>").attr("type", "text")
                .prop("readonly", !!this.readOnly);
        }
    });

jsGrid.fields.text = jsGrid.TextField = TextField;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

var TextField = jsGrid.TextField;

function NumberField(config) {
        TextField.call(this, config);
    }

NumberField.prototype = new TextField({

sorter: "number",
        align: "right",
		readOnly: false,

filterValue: function() {
            return this.filterControl.val()
                ? parseInt(this.filterControl.val() || 0, 10)
                : undefined;
        },

insertValue: function() {
            return this.insertControl.val()
                ? parseInt(this.insertControl.val() || 0, 10)
                : undefined;
        },

editValue: function() {
            return this.editControl.val()
                ? parseInt(this.editControl.val() || 0, 10)
                : undefined;
        },

_createTextBox: function() {
			return $("<input>").attr("type", "number")
                .prop("readonly", !!this.readOnly);
        }
    });

jsGrid.fields.number = jsGrid.NumberField = NumberField;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

var TextField = jsGrid.TextField;

function TextAreaField(config) {
        TextField.call(this, config);
    }

TextAreaField.prototype = new TextField({

insertTemplate: function() {
            if(!this.inserting)
                return "";

return this.insertControl = this._createTextArea();
        },

editTemplate: function(value) {
            if(!this.editing)
                return this.itemTemplate.apply(this, arguments);

var $result = this.editControl = this._createTextArea();
            $result.val(value);
            return $result;
        },

_createTextArea: function() {
            return $("<textarea>").prop("readonly", !!this.readOnly);
        }
    });

jsGrid.fields.textarea = jsGrid.TextAreaField = TextAreaField;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

var NumberField = jsGrid.NumberField;
    var numberValueType = "number";
    var stringValueType = "string";

function SelectField(config) {
        this.items = [];
        this.selectedIndex = -1;
        this.valueField = "";
        this.textField = "";

if(config.valueField && config.items.length) {
            var firstItemValue = config.items[0][config.valueField];
            this.valueType = (typeof firstItemValue) === numberValueType ? numberValueType : stringValueType;
        }

this.sorter = this.valueType;

NumberField.call(this, config);
    }

SelectField.prototype = new NumberField({

align: "center",
        valueType: numberValueType,

itemTemplate: function(value) {
            var items = this.items,
                valueField = this.valueField,
                textField = this.textField,
                resultItem;

if(valueField) {
                resultItem = $.grep(items, function(item, index) {
                    return item[valueField] === value;
                })[0] || {};
            }
            else {
                resultItem = items[value];
            }

var result = (textField ? resultItem[textField] : resultItem);

return (result === undefined || result === null) ? "" : result;
        },

filterTemplate: function() {
            if(!this.filtering)
                return "";

var grid = this._grid,
                $result = this.filterControl = this._createSelect();

if(this.autosearch) {
                $result.on("change", function(e) {
                    grid.search();
                });
            }

return $result;
        },

insertTemplate: function() {
            if(!this.inserting)
                return "";

return this.insertControl = this._createSelect();
        },

editTemplate: function(value) {
            if(!this.editing)
                return this.itemTemplate.apply(this, arguments);

var $result = this.editControl = this._createSelect();
            (value !== undefined) && $result.val(value);
            return $result;
        },

filterValue: function() {
            var val = this.filterControl.val();
            return this.valueType === numberValueType ? parseInt(val || 0, 10) : val;
        },

insertValue: function() {
            var val = this.insertControl.val();
            return this.valueType === numberValueType ? parseInt(val || 0, 10) : val;
        },

editValue: function() {
            var val = this.editControl.val();
            return this.valueType === numberValueType ? parseInt(val || 0, 10) : val;
        },

_createSelect: function() {
            var $result = $("<select>"),
                valueField = this.valueField,
                textField = this.textField,
                selectedIndex = this.selectedIndex;

$.each(this.items, function(index, item) {
                var value = valueField ? item[valueField] : index,
                    text = textField ? item[textField] : item;

var $option = $("<option>")
                    .attr("value", value)
                    .text(text)
                    .appendTo($result);

$option.prop("selected", (selectedIndex === index));
            });

$result.prop("disabled", !!this.readOnly);

return $result;
        }
    });

jsGrid.fields.select = jsGrid.SelectField = SelectField;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

var Field = jsGrid.Field;

function CheckboxField(config) {
        Field.call(this, config);
    }

CheckboxField.prototype = new Field({

sorter: "number",
        align: "center",
        autosearch: true,

itemTemplate: function(value) {
            return this._createCheckbox().prop({
                checked: value,
                disabled: true
            });
        },

filterTemplate: function() {
            if(!this.filtering)
                return "";

var grid = this._grid,
                $result = this.filterControl = this._createCheckbox();

$result.prop({
                readOnly: true,
                indeterminate: true
            });

$result.on("click", function() {
                var $cb = $(this);

if($cb.prop("readOnly")) {
                    $cb.prop({
                        checked: false,
                        readOnly: false
                    });
                }
                else if(!$cb.prop("checked")) {
                    $cb.prop({
                        readOnly: true,
                        indeterminate: true
                    });
                }
            });

if(this.autosearch) {
                $result.on("click", function() {
                    grid.search();
                });
            }

return $result;
        },

insertTemplate: function() {
            if(!this.inserting)
                return "";

return this.insertControl = this._createCheckbox();
        },

editTemplate: function(value) {
            if(!this.editing)
                return this.itemTemplate.apply(this, arguments);

var $result = this.editControl = this._createCheckbox();
            $result.prop("checked", value);
            return $result;
        },

filterValue: function() {
            return this.filterControl.get(0).indeterminate
                ? undefined
                : this.filterControl.is(":checked");
        },

insertValue: function() {
            return this.insertControl.is(":checked");
        },

editValue: function() {
            return this.editControl.is(":checked");
        },

_createCheckbox: function() {
            return $("<input>").attr("type", "checkbox");
        }
    });

jsGrid.fields.checkbox = jsGrid.CheckboxField = CheckboxField;

}(jsGrid, jQuery));

(function(jsGrid, $, undefined) {

var Field = jsGrid.Field;

function ControlField(config) {
        Field.call(this, config);
        this._configInitialized = false;
    }

ControlField.prototype = new Field({
        css: "jsgrid-control-field",
        align: "center",
        width: 50,
        filtering: false,
        inserting: false,
        editing: false,
        sorting: false,

buttonClass: "jsgrid-button",
        modeButtonClass: "jsgrid-mode-button",

modeOnButtonClass: "jsgrid-mode-on-button",
        searchModeButtonClass: "jsgrid-search-mode-button",
        insertModeButtonClass: "jsgrid-insert-mode-button",
        editButtonClass: "jsgrid-edit-button",
        deleteButtonClass: "jsgrid-delete-button",
        searchButtonClass: "jsgrid-search-button",
        clearFilterButtonClass: "jsgrid-clear-filter-button",
        insertButtonClass: "jsgrid-insert-button",
        updateButtonClass: "jsgrid-update-button",
        cancelEditButtonClass: "jsgrid-cancel-edit-button",

searchModeButtonTooltip: "Switch to searching",
        insertModeButtonTooltip: "Switch to inserting",
        editButtonTooltip: "Edit",
        deleteButtonTooltip: "Delete",
        searchButtonTooltip: "Search",
        clearFilterButtonTooltip: "Clear filter",
        insertButtonTooltip: "Insert",
        updateButtonTooltip: "Update",
        cancelEditButtonTooltip: "Cancel edit",

editButton: true,
        deleteButton: true,
        clearFilterButton: true,
        modeSwitchButton: true,

_initConfig: function() {
            this._hasFiltering = this._grid.filtering;
            this._hasInserting = this._grid.inserting;

if(this._hasInserting && this.modeSwitchButton) {
                this._grid.inserting = false;
            }

this._configInitialized = true;
        },

headerTemplate: function() {
            if(!this._configInitialized) {
                this._initConfig();
            }

var hasFiltering = this._hasFiltering;
            var hasInserting = this._hasInserting;

if(!this.modeSwitchButton || (!hasFiltering && !hasInserting))
                return "";

if(hasFiltering && !hasInserting)
                return this._createFilterSwitchButton();

if(hasInserting && !hasFiltering)
                return this._createInsertSwitchButton();

return this._createModeSwitchButton();
        },

itemTemplate: function(value, item) {
            var $result = $([]);

if(this.editButton) {
                $result = $result.add(this._createEditButton(item));
            }

if(this.deleteButton) {
                $result = $result.add(this._createDeleteButton(item));
            }

return $result;
        },

filterTemplate: function() {
            var $result = this._createSearchButton();
            return this.clearFilterButton ? $result.add(this._createClearFilterButton()) : $result;
        },

insertTemplate: function() {
            return this._createInsertButton();
        },

editTemplate: function() {
            return this._createUpdateButton().add(this._createCancelEditButton());
        },

_createFilterSwitchButton: function() {
            return this._createOnOffSwitchButton("filtering", this.searchModeButtonClass, true);
        },

_createInsertSwitchButton: function() {
            return this._createOnOffSwitchButton("inserting", this.insertModeButtonClass, false);
        },

_createOnOffSwitchButton: function(option, cssClass, isOnInitially) {
            var isOn = isOnInitially;

var updateButtonState = $.proxy(function() {
                $button.toggleClass(this.modeOnButtonClass, isOn);
            }, this);

var $button = this._createGridButton(this.modeButtonClass + " " + cssClass, "", function(grid) {
                isOn = !isOn;
                grid.option(option, isOn);
                updateButtonState();
            });

updateButtonState();

return $button;
        },

_createModeSwitchButton: function() {
            var isInserting = false;

var updateButtonState = $.proxy(function() {
                $button.attr("title", isInserting ? this.searchModeButtonTooltip : this.insertModeButtonTooltip)
                    .toggleClass(this.insertModeButtonClass, !isInserting)
                    .toggleClass(this.searchModeButtonClass, isInserting);
            }, this);

var $button = this._createGridButton(this.modeButtonClass, "", function(grid) {
                isInserting = !isInserting;
                grid.option("inserting", isInserting);
                grid.option("filtering", !isInserting);
                updateButtonState();
            });

updateButtonState();

return $button;
        },

_createEditButton: function(item) {
            return this._createGridButton(this.editButtonClass, this.editButtonTooltip, function(grid, e) {
                grid.editItem(item);
                e.stopPropagation();
            });
        },

_createDeleteButton: function(item) {
            return this._createGridButton(this.deleteButtonClass, this.deleteButtonTooltip, function(grid, e) {
                grid.deleteItem(item);
                e.stopPropagation();
            });
        },

_createSearchButton: function() {
            return this._createGridButton(this.searchButtonClass, this.searchButtonTooltip, function(grid) {
                grid.search();
            });
        },

_createClearFilterButton: function() {
            return this._createGridButton(this.clearFilterButtonClass, this.clearFilterButtonTooltip, function(grid) {
                grid.clearFilter();
            });
        },

_createInsertButton: function() {
            return this._createGridButton(this.insertButtonClass, this.insertButtonTooltip, function(grid) {
                grid.insertItem().done(function() {
                    grid.clearInsert();
                });
            });
        },

_createUpdateButton: function() {
            return this._createGridButton(this.updateButtonClass, this.updateButtonTooltip, function(grid, e) {
                grid.updateItem();
                e.stopPropagation();
            });
        },

_createCancelEditButton: function() {
            return this._createGridButton(this.cancelEditButtonClass, this.cancelEditButtonTooltip, function(grid, e) {
                grid.cancelEdit();
                e.stopPropagation();
            });
        },

_createGridButton: function(cls, tooltip, clickHandler) {
            var grid = this._grid;

return $("<input>").addClass(this.buttonClass)
                .addClass(cls)
                .attr({
                    type: "button",
                    title: tooltip
                })
                .on("click", function(e) {
                    clickHandler(grid, e);
                });
        },

editValue: function() {
            return "";
        }

});

jsGrid.fields.control = jsGrid.ControlField = ControlField;

}(jsGrid, jQuery));

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