--- /dev/null
+Ext.ns('Ext.ux.grid');
+
+Ext.ux.grid.GridSummary = function(config) {
+ Ext.apply(this, config);
+};
+
+Ext.extend(Ext.ux.grid.GridSummary, Ext.util.Observable, {
+ init : function(grid) {
+ this.grid = grid;
+ this.cm = grid.getColumnModel();
+ this.view = grid.getView();
+
+ var v = this.view;
+
+ // override GridView's onLayout() method
+ v.onLayout = this.onLayout;
+
+ v.afterMethod('render', this.refreshSummary, this);
+ v.afterMethod('refresh', this.refreshSummary, this);
+ v.afterMethod('syncScroll', this.syncSummaryScroll, this);
+ v.afterMethod('onColumnWidthUpdated', this.doWidth, this);
+ v.afterMethod('onAllColumnWidthsUpdated', this.doAllWidths, this);
+ v.afterMethod('onColumnHiddenUpdated', this.doHidden, this);
+
+ // update summary row on store's add/remove/clear/update events
+ grid.store.on({
+ add: this.refreshSummary,
+ remove: this.refreshSummary,
+ clear: this.refreshSummary,
+ update: this.refreshSummary,
+ scope: this
+ });
+
+ if (!this.rowTpl) {
+ this.rowTpl = new Ext.Template(
+ '<div class="x-grid3-summary-row x-grid3-gridsummary-row-offset">',
+ '<table class="x-grid3-summary-table" border="0" cellspacing="0" cellpadding="0" style="{tstyle}">',
+ '<tbody><tr>{cells}</tr></tbody>',
+ '</table>',
+ '</div>'
+ );
+ this.rowTpl.disableFormats = true;
+ }
+ this.rowTpl.compile();
+
+ if (!this.cellTpl) {
+ this.cellTpl = new Ext.Template(
+ '<td class="x-grid3-col x-grid3-cell x-grid3-td-{id} {css}" style="{style}">',
+ '<div class="x-grid3-cell-inner x-grid3-col-{id}" unselectable="on" {attr}>{value}</div>',
+ "</td>"
+ );
+ this.cellTpl.disableFormats = true;
+ }
+ this.cellTpl.compile();
+ },
+
+ calculate : function(rs, cm) {
+ var data = {}, cfg = cm.config;
+ for (var i = 0, len = cfg.length; i < len; i++) { // loop through all columns in ColumnModel
+ var cf = cfg[i], // get column's configuration
+ cname = cf.dataIndex; // get column dataIndex
+
+ // initialise grid summary row data for
+ // the current column being worked on
+ data[cname] = 0;
+
+ if (cf.summaryType) {
+ for (var j = 0, jlen = rs.length; j < jlen; j++) {
+ var r = rs[j]; // get a single Record
+ data[cname] = Ext.ux.grid.GridSummary.Calculations[cf.summaryType](r.get(cname), r, cname, data, j);
+ }
+ }
+ }
+
+ return data;
+ },
+
+ onLayout : function(vw, vh) {
+ if (Ext.type(vh) != 'number') { // handles grid's height:'auto' config
+ return;
+ }
+ // note: this method is scoped to the GridView
+ if (!this.grid.getGridEl().hasClass('x-grid-hide-gridsummary')) {
+ // readjust gridview's height only if grid summary row is visible
+ this.scroller.setHeight(vh - this.summary.getHeight());
+ }
+ },
+
+ syncSummaryScroll : function() {
+ var mb = this.view.scroller.dom;
+
+ this.view.summaryWrap.dom.scrollLeft = mb.scrollLeft;
+ this.view.summaryWrap.dom.scrollLeft = mb.scrollLeft; // second time for IE (1/2 time first fails, other browsers ignore)
+ },
+
+ doWidth : function(col, w, tw) {
+ var s = this.view.summary.dom;
+
+ s.firstChild.style.width = tw;
+ s.firstChild.rows[0].childNodes[col].style.width = w;
+ },
+
+ doAllWidths : function(ws, tw) {
+ var s = this.view.summary.dom, wlen = ws.length;
+
+ s.firstChild.style.width = tw;
+
+ var cells = s.firstChild.rows[0].childNodes;
+
+ for (var j = 0; j < wlen; j++) {
+ cells[j].style.width = ws[j];
+ }
+ },
+
+ doHidden : function(col, hidden, tw) {
+ var s = this.view.summary.dom,
+ display = hidden ? 'none' : '';
+
+ s.firstChild.style.width = tw;
+ s.firstChild.rows[0].childNodes[col].style.display = display;
+ },
+
+ renderSummary : function(o, cs, cm) {
+ cs = cs || this.view.getColumnData();
+ var cfg = cm.config,
+ buf = [],
+ last = cs.length - 1;
+
+ for (var i = 0, len = cs.length; i < len; i++) {
+ var c = cs[i], cf = cfg[i], p = {};
+
+ p.id = c.id;
+ p.style = c.style;
+ p.css = i == 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '');
+
+ if (cf.summaryType || cf.summaryRenderer) {
+ //p.value = (cf.summaryRenderer || c.renderer)(o.data[c.name], p, o);
+ p.value = (cf.summaryRenderer || c.renderer)(o.data[c.name], p, new Ext.data.Record(o.data), -1, i, this.grid.store);
+ } else {
+ p.value = '';
+ }
+ if (p.value == undefined || p.value === "") p.value = " ";
+ buf[buf.length] = this.cellTpl.apply(p);
+ }
+
+ return this.rowTpl.apply({
+ tstyle: 'width:' + this.view.getTotalWidth() + ';',
+ cells: buf.join('')
+ });
+ },
+
+ refreshSummary : function() {
+ var g = this.grid, ds = g.store,
+ cs = this.view.getColumnData(),
+ cm = this.cm,
+ rs = ds.getRange(),
+ data = this.calculate(rs, cm),
+ buf = this.renderSummary({data: data}, cs, cm);
+
+ if (!this.view.summaryWrap) {
+ this.view.summaryWrap = Ext.DomHelper.insertAfter(this.view.scroller, {
+ tag: 'div',
+ cls: 'x-grid3-gridsummary-row-inner'
+ }, true);
+ }
+ this.view.summary = this.view.summaryWrap.update(buf).first();
+ },
+
+ toggleSummary : function(visible) { // true to display summary row
+ var el = this.grid.getGridEl();
+
+ if (el) {
+ if (visible === undefined) {
+ visible = el.hasClass('x-grid-hide-gridsummary');
+ }
+ el[visible ? 'removeClass' : 'addClass']('x-grid-hide-gridsummary');
+
+ this.view.layout(); // readjust gridview height
+ }
+ },
+
+ getSummaryNode : function() {
+ return this.view.summary
+ }
+});
+Ext.reg('gridsummary', Ext.ux.grid.GridSummary);
+
+/*
+ * all Calculation methods are called on each Record in the Store
+ * with the following 5 parameters:
+ *
+ * v - cell value
+ * record - reference to the current Record
+ * colName - column name (i.e. the ColumnModel's dataIndex)
+ * data - the cumulative data for the current column + summaryType up to the current Record
+ * rowIdx - current row index
+ */
+Ext.ux.grid.GridSummary.Calculations = {
+ sum : function(v, record, colName, data, rowIdx) {
+ return data[colName] + Ext.num(v, 0);
+ },
+
+ count : function(v, record, colName, data, rowIdx) {
+ return rowIdx + 1;
+ },
+
+ max : function(v, record, colName, data, rowIdx) {
+ return Math.max(Ext.num(v, 0), data[colName]);
+ },
+
+ min : function(v, record, colName, data, rowIdx) {
+ return Math.min(Ext.num(v, 0), data[colName]);
+ },
+
+ average : function(v, record, colName, data, rowIdx) {
+ var t = data[colName] + Ext.num(v, 0), count = record.store.getCount();
+ return rowIdx == count - 1 ? (t / count) : t;
+ }
+}
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