--- /dev/null
+(function ($) {
+ $.extend(true, window, {
+ Slick: {
+ Data: {
+ DataView: DataView,
+ Aggregators: {
+ Avg: AvgAggregator,
+ Min: MinAggregator,
+ Max: MaxAggregator,
+ Sum: SumAggregator
+ }
+ }
+ }
+ });
+
+
+ /***
+ * A sample Model implementation.
+ * Provides a filtered view of the underlying data.
+ *
+ * Relies on the data item having an "id" property uniquely identifying it.
+ */
+ function DataView(options) {
+ var self = this;
+
+ var defaults = {
+ groupItemMetadataProvider: null,
+ inlineFilters: false
+ };
+
+
+ // private
+ var idProperty = "id"; // property holding a unique row id
+ var items = []; // data by index
+ var rows = []; // data by row
+ var idxById = {}; // indexes by id
+ var rowsById = null; // rows by id; lazy-calculated
+ var filter = null; // filter function
+ var updated = null; // updated item ids
+ var suspend = false; // suspends the recalculation
+ var sortAsc = true;
+ var fastSortField;
+ var sortComparer;
+ var refreshHints = {};
+ var prevRefreshHints = {};
+ var filterArgs;
+ var filteredItems = [];
+ var compiledFilter;
+ var compiledFilterWithCaching;
+ var filterCache = [];
+
+ // grouping
+ var groupingInfoDefaults = {
+ getter: null,
+ formatter: null,
+ comparer: function(a, b) { return a.value - b.value; },
+ predefinedValues: [],
+ aggregators: [],
+ aggregateEmpty: false,
+ aggregateCollapsed: false,
+ aggregateChildGroups: false,
+ collapsed: false,
+ displayTotalsRow: true
+ };
+ var groupingInfos = [];
+ var groups = [];
+ var toggledGroupsByLevel = [];
+ var groupingDelimiter = ':|:';
+
+ var pagesize = 0;
+ var pagenum = 0;
+ var totalRows = 0;
+
+ // events
+ var onRowCountChanged = new Slick.Event();
+ var onRowsChanged = new Slick.Event();
+ var onPagingInfoChanged = new Slick.Event();
+
+ options = $.extend(true, {}, defaults, options);
+
+
+ function beginUpdate() {
+ suspend = true;
+ }
+
+ function endUpdate() {
+ suspend = false;
+ refresh();
+ }
+
+ function setRefreshHints(hints) {
+ refreshHints = hints;
+ }
+
+ function setFilterArgs(args) {
+ filterArgs = args;
+ }
+
+ function updateIdxById(startingIndex) {
+ startingIndex = startingIndex || 0;
+ var id;
+ for (var i = startingIndex, l = items.length; i < l; i++) {
+ id = items[i][idProperty];
+ if (id === undefined) {
+ throw "Each data element must implement a unique 'id' property";
+ }
+ idxById[id] = i;
+ }
+ }
+
+ function ensureIdUniqueness() {
+ var id;
+ for (var i = 0, l = items.length; i < l; i++) {
+ id = items[i][idProperty];
+ if (id === undefined || idxById[id] !== i) {
+ throw "Each data element must implement a unique 'id' property";
+ }
+ }
+ }
+
+ function getItems() {
+ return items;
+ }
+
+ function setItems(data, objectIdProperty) {
+ if (objectIdProperty !== undefined) {
+ idProperty = objectIdProperty;
+ }
+ items = filteredItems = data;
+ idxById = {};
+ updateIdxById();
+ ensureIdUniqueness();
+ refresh();
+ }
+
+ function setPagingOptions(args) {
+ if (args.pageSize != undefined) {
+ pagesize = args.pageSize;
+ pagenum = pagesize ? Math.min(pagenum, Math.max(0, Math.ceil(totalRows / pagesize) - 1)) : 0;
+ }
+
+ if (args.pageNum != undefined) {
+ pagenum = Math.min(args.pageNum, Math.max(0, Math.ceil(totalRows / pagesize) - 1));
+ }
+
+ onPagingInfoChanged.notify(getPagingInfo(), null, self);
+
+ refresh();
+ }
+
+ function getPagingInfo() {
+ var totalPages = pagesize ? Math.max(1, Math.ceil(totalRows / pagesize)) : 1;
+ return {pageSize: pagesize, pageNum: pagenum, totalRows: totalRows, totalPages: totalPages};
+ }
+
+ function sort(comparer, ascending) {
+ sortAsc = ascending;
+ sortComparer = comparer;
+ fastSortField = null;
+ if (ascending === false) {
+ items.reverse();
+ }
+ items.sort(comparer);
+ if (ascending === false) {
+ items.reverse();
+ }
+ idxById = {};
+ updateIdxById();
+ refresh();
+ }
+
+ /***
+ * Provides a workaround for the extremely slow sorting in IE.
+ * Does a [lexicographic] sort on a give column by temporarily overriding Object.prototype.toString
+ * to return the value of that field and then doing a native Array.sort().
+ */
+ function fastSort(field, ascending) {
+ sortAsc = ascending;
+ fastSortField = field;
+ sortComparer = null;
+ var oldToString = Object.prototype.toString;
+ Object.prototype.toString = (typeof field == "function") ? field : function () {
+ return this[field]
+ };
+ // an extra reversal for descending sort keeps the sort stable
+ // (assuming a stable native sort implementation, which isn't true in some cases)
+ if (ascending === false) {
+ items.reverse();
+ }
+ items.sort();
+ Object.prototype.toString = oldToString;
+ if (ascending === false) {
+ items.reverse();
+ }
+ idxById = {};
+ updateIdxById();
+ refresh();
+ }
+
+ function reSort() {
+ if (sortComparer) {
+ sort(sortComparer, sortAsc);
+ } else if (fastSortField) {
+ fastSort(fastSortField, sortAsc);
+ }
+ }
+
+ function setFilter(filterFn) {
+ filter = filterFn;
+ if (options.inlineFilters) {
+ compiledFilter = compileFilter();
+ compiledFilterWithCaching = compileFilterWithCaching();
+ }
+ refresh();
+ }
+
+ function getGrouping() {
+ return groupingInfos;
+ }
+
+ function setGrouping(groupingInfo) {
+ if (!options.groupItemMetadataProvider) {
+ options.groupItemMetadataProvider = new Slick.Data.GroupItemMetadataProvider();
+ }
+
+ groups = [];
+ toggledGroupsByLevel = [];
+ groupingInfo = groupingInfo || [];
+ groupingInfos = (groupingInfo instanceof Array) ? groupingInfo : [groupingInfo];
+
+ for (var i = 0; i < groupingInfos.length; i++) {
+ var gi = groupingInfos[i] = $.extend(true, {}, groupingInfoDefaults, groupingInfos[i]);
+ gi.getterIsAFn = typeof gi.getter === "function";
+
+ // pre-compile accumulator loops
+ gi.compiledAccumulators = [];
+ var idx = gi.aggregators.length;
+ while (idx--) {
+ gi.compiledAccumulators[idx] = compileAccumulatorLoop(gi.aggregators[idx]);
+ }
+
+ toggledGroupsByLevel[i] = {};
+ }
+
+ refresh();
+ }
+
+ /**
+ * @deprecated Please use {@link setGrouping}.
+ */
+ function groupBy(valueGetter, valueFormatter, sortComparer) {
+ if (valueGetter == null) {
+ setGrouping([]);
+ return;
+ }
+
+ setGrouping({
+ getter: valueGetter,
+ formatter: valueFormatter,
+ comparer: sortComparer
+ });
+ }
+
+ /**
+ * @deprecated Please use {@link setGrouping}.
+ */
+ function setAggregators(groupAggregators, includeCollapsed) {
+ if (!groupingInfos.length) {
+ throw new Error("At least one grouping must be specified before calling setAggregators().");
+ }
+
+ groupingInfos[0].aggregators = groupAggregators;
+ groupingInfos[0].aggregateCollapsed = includeCollapsed;
+
+ setGrouping(groupingInfos);
+ }
+
+ function getItemByIdx(i) {
+ return items[i];
+ }
+
+ function getIdxById(id) {
+ return idxById[id];
+ }
+
+ function ensureRowsByIdCache() {
+ if (!rowsById) {
+ rowsById = {};
+ for (var i = 0, l = rows.length; i < l; i++) {
+ rowsById[rows[i][idProperty]] = i;
+ }
+ }
+ }
+
+ function getRowById(id) {
+ ensureRowsByIdCache();
+ return rowsById[id];
+ }
+
+ function getItemById(id) {
+ return items[idxById[id]];
+ }
+
+ function mapIdsToRows(idArray) {
+ var rows = [];
+ ensureRowsByIdCache();
+ for (var i = 0; i < idArray.length; i++) {
+ var row = rowsById[idArray[i]];
+ if (row != null) {
+ rows[rows.length] = row;
+ }
+ }
+ return rows;
+ }
+
+ function mapRowsToIds(rowArray) {
+ var ids = [];
+ for (var i = 0; i < rowArray.length; i++) {
+ if (rowArray[i] < rows.length) {
+ ids[ids.length] = rows[rowArray[i]][idProperty];
+ }
+ }
+ return ids;
+ }
+
+ function updateItem(id, item) {
+ if (idxById[id] === undefined || id !== item[idProperty]) {
+ throw "Invalid or non-matching id";
+ }
+ items[idxById[id]] = item;
+ if (!updated) {
+ updated = {};
+ }
+ updated[id] = true;
+ refresh();
+ }
+
+ function insertItem(insertBefore, item) {
+ items.splice(insertBefore, 0, item);
+ updateIdxById(insertBefore);
+ refresh();
+ }
+
+ function addItem(item) {
+ items.push(item);
+ updateIdxById(items.length - 1);
+ refresh();
+ }
+
+ function deleteItem(id) {
+ var idx = idxById[id];
+ if (idx === undefined) {
+ throw "Invalid id";
+ }
+ delete idxById[id];
+ items.splice(idx, 1);
+ updateIdxById(idx);
+ refresh();
+ }
+
+ function getLength() {
+ return rows.length;
+ }
+
+ function getItem(i) {
+ return rows[i];
+ }
+
+ function getItemMetadata(i) {
+ var item = rows[i];
+ if (item === undefined) {
+ return null;
+ }
+
+ // overrides for grouping rows
+ if (item.__group) {
+ return options.groupItemMetadataProvider.getGroupRowMetadata(item);
+ }
+
+ // overrides for totals rows
+ if (item.__groupTotals) {
+ return options.groupItemMetadataProvider.getTotalsRowMetadata(item);
+ }
+
+ return null;
+ }
+
+ function expandCollapseAllGroups(level, collapse) {
+ if (level == null) {
+ for (var i = 0; i < groupingInfos.length; i++) {
+ toggledGroupsByLevel[i] = {};
+ groupingInfos[i].collapsed = collapse;
+ }
+ } else {
+ toggledGroupsByLevel[level] = {};
+ groupingInfos[level].collapsed = collapse;
+ }
+ refresh();
+ }
+
+ /**
+ * @param level {Number} Optional level to collapse. If not specified, applies to all levels.
+ */
+ function collapseAllGroups(level) {
+ expandCollapseAllGroups(level, true);
+ }
+
+ /**
+ * @param level {Number} Optional level to expand. If not specified, applies to all levels.
+ */
+ function expandAllGroups(level) {
+ expandCollapseAllGroups(level, false);
+ }
+
+ function expandCollapseGroup(level, groupingKey, collapse) {
+ toggledGroupsByLevel[level][groupingKey] = groupingInfos[level].collapsed ^ collapse;
+ refresh();
+ }
+
+ /**
+ * @param varArgs Either a Slick.Group's "groupingKey" property, or a
+ * variable argument list of grouping values denoting a unique path to the row. For
+ * example, calling collapseGroup('high', '10%') will collapse the '10%' subgroup of
+ * the 'high' setGrouping.
+ */
+ function collapseGroup(varArgs) {
+ var args = Array.prototype.slice.call(arguments);
+ var arg0 = args[0];
+ if (args.length == 1 && arg0.indexOf(groupingDelimiter) != -1) {
+ expandCollapseGroup(arg0.split(groupingDelimiter).length - 1, arg0, true);
+ } else {
+ expandCollapseGroup(args.length - 1, args.join(groupingDelimiter), true);
+ }
+ }
+
+ /**
+ * @param varArgs Either a Slick.Group's "groupingKey" property, or a
+ * variable argument list of grouping values denoting a unique path to the row. For
+ * example, calling expandGroup('high', '10%') will expand the '10%' subgroup of
+ * the 'high' setGrouping.
+ */
+ function expandGroup(varArgs) {
+ var args = Array.prototype.slice.call(arguments);
+ var arg0 = args[0];
+ if (args.length == 1 && arg0.indexOf(groupingDelimiter) != -1) {
+ expandCollapseGroup(arg0.split(groupingDelimiter).length - 1, arg0, false);
+ } else {
+ expandCollapseGroup(args.length - 1, args.join(groupingDelimiter), false);
+ }
+ }
+
+ function getGroups() {
+ return groups;
+ }
+
+ function extractGroups(rows, parentGroup) {
+ var group;
+ var val;
+ var groups = [];
+ var groupsByVal = [];
+ var r;
+ var level = parentGroup ? parentGroup.level + 1 : 0;
+ var gi = groupingInfos[level];
+
+ for (var i = 0, l = gi.predefinedValues.length; i < l; i++) {
+ val = gi.predefinedValues[i];
+ group = groupsByVal[val];
+ if (!group) {
+ group = new Slick.Group();
+ group.value = val;
+ group.level = level;
+ group.groupingKey = (parentGroup ? parentGroup.groupingKey + groupingDelimiter : '') + val;
+ groups[groups.length] = group;
+ groupsByVal[val] = group;
+ }
+ }
+
+ for (var i = 0, l = rows.length; i < l; i++) {
+ r = rows[i];
+ val = gi.getterIsAFn ? gi.getter(r) : r[gi.getter];
+ group = groupsByVal[val];
+ if (!group) {
+ group = new Slick.Group();
+ group.value = val;
+ group.level = level;
+ group.groupingKey = (parentGroup ? parentGroup.groupingKey + groupingDelimiter : '') + val;
+ groups[groups.length] = group;
+ groupsByVal[val] = group;
+ }
+
+ group.rows[group.count++] = r;
+ }
+
+ if (level < groupingInfos.length - 1) {
+ for (var i = 0; i < groups.length; i++) {
+ group = groups[i];
+ group.groups = extractGroups(group.rows, group);
+ }
+ }
+
+ groups.sort(groupingInfos[level].comparer);
+
+ return groups;
+ }
+
+ // TODO: lazy totals calculation
+ function calculateGroupTotals(group) {
+ // TODO: try moving iterating over groups into compiled accumulator
+ var gi = groupingInfos[group.level];
+ var isLeafLevel = (group.level == groupingInfos.length);
+ var totals = new Slick.GroupTotals();
+ var agg, idx = gi.aggregators.length;
+ while (idx--) {
+ agg = gi.aggregators[idx];
+ agg.init();
+ gi.compiledAccumulators[idx].call(agg,
+ (!isLeafLevel && gi.aggregateChildGroups) ? group.groups : group.rows);
+ agg.storeResult(totals);
+ }
+ totals.group = group;
+ group.totals = totals;
+ }
+
+ function calculateTotals(groups, level) {
+ level = level || 0;
+ var gi = groupingInfos[level];
+ var idx = groups.length, g;
+ while (idx--) {
+ g = groups[idx];
+
+ if (g.collapsed && !gi.aggregateCollapsed) {
+ continue;
+ }
+
+ // Do a depth-first aggregation so that parent setGrouping aggregators can access subgroup totals.
+ if (g.groups) {
+ calculateTotals(g.groups, level + 1);
+ }
+
+ if (gi.aggregators.length && (
+ gi.aggregateEmpty || g.rows.length || (g.groups && g.groups.length))) {
+ calculateGroupTotals(g);
+ }
+ }
+ }
+
+ function finalizeGroups(groups, level) {
+ level = level || 0;
+ var gi = groupingInfos[level];
+ var groupCollapsed = gi.collapsed;
+ var toggledGroups = toggledGroupsByLevel[level];
+ var idx = groups.length, g;
+ while (idx--) {
+ g = groups[idx];
+ g.collapsed = groupCollapsed ^ toggledGroups[g.groupingKey];
+ g.title = gi.formatter ? gi.formatter(g) : g.value;
+
+ if (g.groups) {
+ finalizeGroups(g.groups, level + 1);
+ // Let the non-leaf setGrouping rows get garbage-collected.
+ // They may have been used by aggregates that go over all of the descendants,
+ // but at this point they are no longer needed.
+ g.rows = [];
+ }
+ }
+ }
+
+ function flattenGroupedRows(groups, level) {
+ level = level || 0;
+ var gi = groupingInfos[level];
+ var groupedRows = [], rows, gl = 0, g;
+ for (var i = 0, l = groups.length; i < l; i++) {
+ g = groups[i];
+ groupedRows[gl++] = g;
+
+ if (!g.collapsed) {
+ rows = g.groups ? flattenGroupedRows(g.groups, level + 1) : g.rows;
+ for (var j = 0, jj = rows.length; j < jj; j++) {
+ groupedRows[gl++] = rows[j];
+ }
+ }
+
+ if (g.totals && gi.displayTotalsRow && (!g.collapsed || gi.aggregateCollapsed)) {
+ groupedRows[gl++] = g.totals;
+ }
+ }
+ return groupedRows;
+ }
+
+ function getFunctionInfo(fn) {
+ var fnRegex = /^function[^(]*\(([^)]*)\)\s*{([\s\S]*)}$/;
+ var matches = fn.toString().match(fnRegex);
+ return {
+ params: matches[1].split(","),
+ body: matches[2]
+ };
+ }
+
+ function compileAccumulatorLoop(aggregator) {
+ var accumulatorInfo = getFunctionInfo(aggregator.accumulate);
+ var fn = new Function(
+ "_items",
+ "for (var " + accumulatorInfo.params[0] + ", _i=0, _il=_items.length; _i<_il; _i++) {" +
+ accumulatorInfo.params[0] + " = _items[_i]; " +
+ accumulatorInfo.body +
+ "}"
+ );
+ fn.displayName = fn.name = "compiledAccumulatorLoop";
+ return fn;
+ }
+
+ function compileFilter() {
+ var filterInfo = getFunctionInfo(filter);
+
+ var filterBody = filterInfo.body
+ .replace(/return false\s*([;}]|$)/gi, "{ continue _coreloop; }$1")
+ .replace(/return true\s*([;}]|$)/gi, "{ _retval[_idx++] = $item$; continue _coreloop; }$1")
+ .replace(/return ([^;}]+?)\s*([;}]|$)/gi,
+ "{ if ($1) { _retval[_idx++] = $item$; }; continue _coreloop; }$2");
+
+ // This preserves the function template code after JS compression,
+ // so that replace() commands still work as expected.
+ var tpl = [
+ //"function(_items, _args) { ",
+ "var _retval = [], _idx = 0; ",
+ "var $item$, $args$ = _args; ",
+ "_coreloop: ",
+ "for (var _i = 0, _il = _items.length; _i < _il; _i++) { ",
+ "$item$ = _items[_i]; ",
+ "$filter$; ",
+ "} ",
+ "return _retval; "
+ //"}"
+ ].join("");
+ tpl = tpl.replace(/\$filter\$/gi, filterBody);
+ tpl = tpl.replace(/\$item\$/gi, filterInfo.params[0]);
+ tpl = tpl.replace(/\$args\$/gi, filterInfo.params[1]);
+
+ var fn = new Function("_items,_args", tpl);
+ fn.displayName = fn.name = "compiledFilter";
+ return fn;
+ }
+
+ function compileFilterWithCaching() {
+ var filterInfo = getFunctionInfo(filter);
+
+ var filterBody = filterInfo.body
+ .replace(/return false\s*([;}]|$)/gi, "{ continue _coreloop; }$1")
+ .replace(/return true\s*([;}]|$)/gi, "{ _cache[_i] = true;_retval[_idx++] = $item$; continue _coreloop; }$1")
+ .replace(/return ([^;}]+?)\s*([;}]|$)/gi,
+ "{ if ((_cache[_i] = $1)) { _retval[_idx++] = $item$; }; continue _coreloop; }$2");
+
+ // This preserves the function template code after JS compression,
+ // so that replace() commands still work as expected.
+ var tpl = [
+ //"function(_items, _args, _cache) { ",
+ "var _retval = [], _idx = 0; ",
+ "var $item$, $args$ = _args; ",
+ "_coreloop: ",
+ "for (var _i = 0, _il = _items.length; _i < _il; _i++) { ",
+ "$item$ = _items[_i]; ",
+ "if (_cache[_i]) { ",
+ "_retval[_idx++] = $item$; ",
+ "continue _coreloop; ",
+ "} ",
+ "$filter$; ",
+ "} ",
+ "return _retval; "
+ //"}"
+ ].join("");
+ tpl = tpl.replace(/\$filter\$/gi, filterBody);
+ tpl = tpl.replace(/\$item\$/gi, filterInfo.params[0]);
+ tpl = tpl.replace(/\$args\$/gi, filterInfo.params[1]);
+
+ var fn = new Function("_items,_args,_cache", tpl);
+ fn.displayName = fn.name = "compiledFilterWithCaching";
+ return fn;
+ }
+
+ function uncompiledFilter(items, args) {
+ var retval = [], idx = 0;
+
+ for (var i = 0, ii = items.length; i < ii; i++) {
+ if (filter(items[i], args)) {
+ retval[idx++] = items[i];
+ }
+ }
+
+ return retval;
+ }
+
+ function uncompiledFilterWithCaching(items, args, cache) {
+ var retval = [], idx = 0, item;
+
+ for (var i = 0, ii = items.length; i < ii; i++) {
+ item = items[i];
+ if (cache[i]) {
+ retval[idx++] = item;
+ } else if (filter(item, args)) {
+ retval[idx++] = item;
+ cache[i] = true;
+ }
+ }
+
+ return retval;
+ }
+
+ function getFilteredAndPagedItems(items) {
+ if (filter) {
+ var batchFilter = options.inlineFilters ? compiledFilter : uncompiledFilter;
+ var batchFilterWithCaching = options.inlineFilters ? compiledFilterWithCaching : uncompiledFilterWithCaching;
+
+ if (refreshHints.isFilterNarrowing) {
+ filteredItems = batchFilter(filteredItems, filterArgs);
+ } else if (refreshHints.isFilterExpanding) {
+ filteredItems = batchFilterWithCaching(items, filterArgs, filterCache);
+ } else if (!refreshHints.isFilterUnchanged) {
+ filteredItems = batchFilter(items, filterArgs);
+ }
+ } else {
+ // special case: if not filtering and not paging, the resulting
+ // rows collection needs to be a copy so that changes due to sort
+ // can be caught
+ filteredItems = pagesize ? items : items.concat();
+ }
+
+ // get the current page
+ var paged;
+ if (pagesize) {
+ if (filteredItems.length < pagenum * pagesize) {
+ pagenum = Math.floor(filteredItems.length / pagesize);
+ }
+ paged = filteredItems.slice(pagesize * pagenum, pagesize * pagenum + pagesize);
+ } else {
+ paged = filteredItems;
+ }
+
+ return {totalRows: filteredItems.length, rows: paged};
+ }
+
+ function getRowDiffs(rows, newRows) {
+ var item, r, eitherIsNonData, diff = [];
+ var from = 0, to = newRows.length;
+
+ if (refreshHints && refreshHints.ignoreDiffsBefore) {
+ from = Math.max(0,
+ Math.min(newRows.length, refreshHints.ignoreDiffsBefore));
+ }
+
+ if (refreshHints && refreshHints.ignoreDiffsAfter) {
+ to = Math.min(newRows.length,
+ Math.max(0, refreshHints.ignoreDiffsAfter));
+ }
+
+ for (var i = from, rl = rows.length; i < to; i++) {
+ if (i >= rl) {
+ diff[diff.length] = i;
+ } else {
+ item = newRows[i];
+ r = rows[i];
+
+ if ((groupingInfos.length && (eitherIsNonData = (item.__nonDataRow) || (r.__nonDataRow)) &&
+ item.__group !== r.__group ||
+ item.__group && !item.equals(r))
+ || (eitherIsNonData &&
+ // no good way to compare totals since they are arbitrary DTOs
+ // deep object comparison is pretty expensive
+ // always considering them 'dirty' seems easier for the time being
+ (item.__groupTotals || r.__groupTotals))
+ || item[idProperty] != r[idProperty]
+ || (updated && updated[item[idProperty]])
+ ) {
+ diff[diff.length] = i;
+ }
+ }
+ }
+ return diff;
+ }
+
+ function recalc(_items) {
+ rowsById = null;
+
+ if (refreshHints.isFilterNarrowing != prevRefreshHints.isFilterNarrowing ||
+ refreshHints.isFilterExpanding != prevRefreshHints.isFilterExpanding) {
+ filterCache = [];
+ }
+
+ var filteredItems = getFilteredAndPagedItems(_items);
+ totalRows = filteredItems.totalRows;
+ var newRows = filteredItems.rows;
+
+ groups = [];
+ if (groupingInfos.length) {
+ groups = extractGroups(newRows);
+ if (groups.length) {
+ calculateTotals(groups);
+ finalizeGroups(groups);
+ newRows = flattenGroupedRows(groups);
+ }
+ }
+
+ var diff = getRowDiffs(rows, newRows);
+
+ rows = newRows;
+
+ return diff;
+ }
+
+ function refresh() {
+ if (suspend) {
+ return;
+ }
+
+ var countBefore = rows.length;
+ var totalRowsBefore = totalRows;
+
+ var diff = recalc(items, filter); // pass as direct refs to avoid closure perf hit
+
+ // if the current page is no longer valid, go to last page and recalc
+ // we suffer a performance penalty here, but the main loop (recalc) remains highly optimized
+ if (pagesize && totalRows < pagenum * pagesize) {
+ pagenum = Math.max(0, Math.ceil(totalRows / pagesize) - 1);
+ diff = recalc(items, filter);
+ }
+
+ updated = null;
+ prevRefreshHints = refreshHints;
+ refreshHints = {};
+
+ if (totalRowsBefore != totalRows) {
+ onPagingInfoChanged.notify(getPagingInfo(), null, self);
+ }
+ if (countBefore != rows.length) {
+ onRowCountChanged.notify({previous: countBefore, current: rows.length}, null, self);
+ }
+ if (diff.length > 0) {
+ onRowsChanged.notify({rows: diff}, null, self);
+ }
+ }
+
+ function syncGridSelection(grid, preserveHidden) {
+ var self = this;
+ var selectedRowIds = self.mapRowsToIds(grid.getSelectedRows());;
+ var inHandler;
+
+ function update() {
+ if (selectedRowIds.length > 0) {
+ inHandler = true;
+ var selectedRows = self.mapIdsToRows(selectedRowIds);
+ if (!preserveHidden) {
+ selectedRowIds = self.mapRowsToIds(selectedRows);
+ }
+ grid.setSelectedRows(selectedRows);
+ inHandler = false;
+ }
+ }
+
+ grid.onSelectedRowsChanged.subscribe(function(e, args) {
+ if (inHandler) { return; }
+ selectedRowIds = self.mapRowsToIds(grid.getSelectedRows());
+ });
+
+ this.onRowsChanged.subscribe(update);
+
+ this.onRowCountChanged.subscribe(update);
+ }
+
+ function syncGridCellCssStyles(grid, key) {
+ var hashById;
+ var inHandler;
+
+ // since this method can be called after the cell styles have been set,
+ // get the existing ones right away
+ storeCellCssStyles(grid.getCellCssStyles(key));
+
+ function storeCellCssStyles(hash) {
+ hashById = {};
+ for (var row in hash) {
+ var id = rows[row][idProperty];
+ hashById[id] = hash[row];
+ }
+ }
+
+ function update() {
+ if (hashById) {
+ inHandler = true;
+ ensureRowsByIdCache();
+ var newHash = {};
+ for (var id in hashById) {
+ var row = rowsById[id];
+ if (row != undefined) {
+ newHash[row] = hashById[id];
+ }
+ }
+ grid.setCellCssStyles(key, newHash);
+ inHandler = false;
+ }
+ }
+
+ grid.onCellCssStylesChanged.subscribe(function(e, args) {
+ if (inHandler) { return; }
+ if (key != args.key) { return; }
+ if (args.hash) {
+ storeCellCssStyles(args.hash);
+ }
+ });
+
+ this.onRowsChanged.subscribe(update);
+
+ this.onRowCountChanged.subscribe(update);
+ }
+
+ $.extend(this, {
+ // methods
+ "beginUpdate": beginUpdate,
+ "endUpdate": endUpdate,
+ "setPagingOptions": setPagingOptions,
+ "getPagingInfo": getPagingInfo,
+ "getItems": getItems,
+ "setItems": setItems,
+ "setFilter": setFilter,
+ "sort": sort,
+ "fastSort": fastSort,
+ "reSort": reSort,
+ "setGrouping": setGrouping,
+ "getGrouping": getGrouping,
+ "groupBy": groupBy,
+ "setAggregators": setAggregators,
+ "collapseAllGroups": collapseAllGroups,
+ "expandAllGroups": expandAllGroups,
+ "collapseGroup": collapseGroup,
+ "expandGroup": expandGroup,
+ "getGroups": getGroups,
+ "getIdxById": getIdxById,
+ "getRowById": getRowById,
+ "getItemById": getItemById,
+ "getItemByIdx": getItemByIdx,
+ "mapRowsToIds": mapRowsToIds,
+ "mapIdsToRows": mapIdsToRows,
+ "setRefreshHints": setRefreshHints,
+ "setFilterArgs": setFilterArgs,
+ "refresh": refresh,
+ "updateItem": updateItem,
+ "insertItem": insertItem,
+ "addItem": addItem,
+ "deleteItem": deleteItem,
+ "syncGridSelection": syncGridSelection,
+ "syncGridCellCssStyles": syncGridCellCssStyles,
+
+ // data provider methods
+ "getLength": getLength,
+ "getItem": getItem,
+ "getItemMetadata": getItemMetadata,
+
+ // events
+ "onRowCountChanged": onRowCountChanged,
+ "onRowsChanged": onRowsChanged,
+ "onPagingInfoChanged": onPagingInfoChanged
+ });
+ }
+
+ function AvgAggregator(field) {
+ this.field_ = field;
+
+ this.init = function () {
+ this.count_ = 0;
+ this.nonNullCount_ = 0;
+ this.sum_ = 0;
+ };
+
+ this.accumulate = function (item) {
+ var val = item[this.field_];
+ this.count_++;
+ if (val != null && val !== "" && val !== NaN) {
+ this.nonNullCount_++;
+ this.sum_ += parseFloat(val);
+ }
+ };
+
+ this.storeResult = function (groupTotals) {
+ if (!groupTotals.avg) {
+ groupTotals.avg = {};
+ }
+ if (this.nonNullCount_ != 0) {
+ groupTotals.avg[this.field_] = this.sum_ / this.nonNullCount_;
+ }
+ };
+ }
+
+ function MinAggregator(field) {
+ this.field_ = field;
+
+ this.init = function () {
+ this.min_ = null;
+ };
+
+ this.accumulate = function (item) {
+ var val = item[this.field_];
+ if (val != null && val !== "" && val !== NaN) {
+ if (this.min_ == null || val < this.min_) {
+ this.min_ = val;
+ }
+ }
+ };
+
+ this.storeResult = function (groupTotals) {
+ if (!groupTotals.min) {
+ groupTotals.min = {};
+ }
+ groupTotals.min[this.field_] = this.min_;
+ }
+ }
+
+ function MaxAggregator(field) {
+ this.field_ = field;
+
+ this.init = function () {
+ this.max_ = null;
+ };
+
+ this.accumulate = function (item) {
+ var val = item[this.field_];
+ if (val != null && val !== "" && val !== NaN) {
+ if (this.max_ == null || val > this.max_) {
+ this.max_ = val;
+ }
+ }
+ };
+
+ this.storeResult = function (groupTotals) {
+ if (!groupTotals.max) {
+ groupTotals.max = {};
+ }
+ groupTotals.max[this.field_] = this.max_;
+ }
+ }
+
+ function SumAggregator(field) {
+ this.field_ = field;
+
+ this.init = function () {
+ this.sum_ = null;
+ };
+
+ this.accumulate = function (item) {
+ var val = item[this.field_];
+ if (val != null && val !== "" && val !== NaN) {
+ this.sum_ += parseFloat(val);
+ }
+ };
+
+ this.storeResult = function (groupTotals) {
+ if (!groupTotals.sum) {
+ groupTotals.sum = {};
+ }
+ groupTotals.sum[this.field_] = this.sum_;
+ }
+ }
+
+ // TODO: add more built-in aggregators
+ // TODO: merge common aggregators in one to prevent needles iterating
+
+})(jQuery);
git://git.onelab.eu / myslice.git / blobdiff