Features

Overview

Overview

The PivotEngine component binds to an IEnumerable object.

Features

OutlineMode  ShowValueFieldHeaders 

You can use the viewDefinition property to save and restore view definitions, as shown in the following example:

The PivotGrid control extends the FlexGrid control, so you can export it to any of
the formats supported by the extension modules provided with the FlexGrid. The
list of the supported formats includes .xlsx, .csv, and .pdf.

For example, clicking the button below creates an Excel file with two sheets: the current view and a transposed version of the current view.

Settings

Description

In this sample, the PivotEngine binds to an IEnumerable object, which provides the data to be aggregated.
All the data will be transferred to the client. The PivotEngine will calculate the data in the client-side, like Wijmo 5 olap controls.
The PivotPanel control and the PivotGrid control are bound to the PivotEngine.
You can change the view definition in the PivotPanel control.
Then the PivotGrid control shows the aggregated data.
You can find the detailed raw data shown in a grid by double-clicking a cell in the PivotGrid control.
You can use OutlineMode property of PivotGrid to compact the amount of white space shown on the screen.
You can also force showing headers of value fields in PivotGrid by using showValueFieldHeaders property even only one value field available.

When the data row count is lower than 10,000, you can set the source-collection attribute or the read-action-url attribute in the tag.
Otherwise, please set the service-url attribute in the tag used in the DataEngine page.

using OlapExplorer.Models;
using System.Collections;
using Microsoft.AspNetCore.Mvc;
using System.Linq;
using System.Collections.Generic;
using C1.Web.Mvc.Olap;

namespace OlapExplorer.Controllers.Olap
{
    public partial class OlapController : Controller
    {
        private static IEnumerable Data = ProductData.GetData(1000).ToList();

        private readonly ClientSettingsModel OlapModel = new ClientSettingsModel
        {
            Settings = new Dictionary<string, object[]>
            {
                {"RowTotals", new object[] { ShowTotals.Subtotals, ShowTotals.None, ShowTotals.GrandTotals} },
                {"ColumnTotals", new object[] { ShowTotals.Subtotals, ShowTotals.None, ShowTotals.GrandTotals} },
                {"ShowZeros", new object[] { false, true } },
                { "AllowMerging", new object[] {
                    C1.Web.Mvc.Grid.AllowMerging.All,
                    C1.Web.Mvc.Grid.AllowMerging.AllHeaders,
                    C1.Web.Mvc.Grid.AllowMerging.Cells,
                    C1.Web.Mvc.Grid.AllowMerging.ColumnHeaders,
                    C1.Web.Mvc.Grid.AllowMerging.None,
                    C1.Web.Mvc.Grid.AllowMerging.RowHeaders
                } }
            }
        };

        // GET: PivotGrid
        public ActionResult Index()
        {
            OlapModel.ControlId = "indexPanel";
            ViewBag.DemoOptions = OlapModel;
            return View(Data);
        }
    }
}
@model IEnumerable<ProductData>
@{
    ClientSettingsModel optionsModel = ViewBag.DemoOptions;
}

<c1-pivot-engine id="indexEngine" show-row-totals="Subtotals" totals-before-data="true">
    <c1-items-source source-collection="Model"></c1-items-source>
    <c1-view-field-collection c1-property="RowFields" items="Country,Date"></c1-view-field-collection>    
    <c1-view-field-collection c1-property="ColumnFields" items="Product"></c1-view-field-collection>
    <c1-view-field-collection c1-property="ValueFields" items="Sales"></c1-view-field-collection>
</c1-pivot-engine>

<div class="row">
    <div class="col-sm-4 col-md-4">
        <c1-pivot-panel id="@(optionsModel.ControlId)" items-source-id="indexEngine"></c1-pivot-panel>
    </div>
    <div class="col-sm-8 col-md-8">
        <c1-pivot-grid id="indexGrid" items-source-id="indexEngine" outline-mode="false" show-value-field-headers="false"></c1-pivot-grid>
        <p>
            <span style="vertical-align:top; color:black;">
                OutlineMode&nbsp;<input id="outlineMode" type="checkbox" onchange="toggleOulineMode(event)" style="margin-right:5em;" />
                ShowValueFieldHeaders&nbsp;<input id="ShowValueFieldHeaders" type="checkbox" onchange="toggleShowValueFieldHeaders(event)" />
            </span>
        </p>
    </div>
</div>
<p>@Html.Raw(OlapRes.Index_Text0)</p>

<button type="button" class="btn btn-default" onclick="saveView()">@Html.Raw(OlapRes.Index_Text7)</button>
<button type="button" class="btn btn-default" onclick="loadView()">@Html.Raw(OlapRes.Index_Text8)</button>
<p></p>
<p>@Html.Raw(OlapRes.Index_Text2)</p>

<p>@Html.Raw(OlapRes.Index_Text3)</p>

<button type="button" class="btn btn-default"
        onclick="excelExport()">
    @Html.Raw(OlapRes.Index_Text9)
</button>
@section Scripts{
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/2.5.0/jszip.min.js"></script>
    <script type="text/javascript">
        function saveView() {
            var ng = c1.getService('indexEngine');
            if (ng && ng.isViewDefined) {
                localStorage.viewDefinition = ng.viewDefinition;
            }
        }
        function loadView() {
            var ng = c1.getService('indexEngine');
            if (ng && localStorage.viewDefinition) {
                ng.viewDefinition = localStorage.viewDefinition;
                var cmbRowTotals = wijmo.Control.getControl('#RowTotals');
                if (cmbRowTotals) {
                    cmbRowTotals.selectedValue = ng.showRowTotals;
                }

                var cmbColTotals = wijmo.Control.getControl('#ColTotals');
                if (cmbColTotals) {
                    cmbColTotals.selectedValue = ng.showColumnTotals;
                }

                var chkShowZeros = document.getElementById('ColTotals');
                if (chkShowZeros) {
                    chkShowZeros.checked = ng.showZeros;
                }
            }
        }
        function excelExport() {
            var pivotGrid = wijmo.Control.getControl('#indexGrid');

            // create book with current view
            var book = wijmo.grid.xlsx.FlexGridXlsxConverter.save(pivotGrid, {
                includeColumnHeaders: true,
                includeRowHeaders: true
            });
            book.sheets[0].name = 'Main View';
            addTitleCell(book.sheets[0], getViewTitle(pivotGrid.engine));

            // add sheet with transposed view
            transposeView(pivotGrid.engine);
            var transposed = wijmo.grid.xlsx.FlexGridXlsxConverter.save(pivotGrid, {
                includeColumnHeaders: true,
                includeRowHeaders: true
            });
            transposed.sheets[0].name = 'Transposed View';
            addTitleCell(transposed.sheets[0], getViewTitle(pivotGrid.engine));
            book.sheets.push(transposed.sheets[0]);
            transposeView(pivotGrid.engine);

            // save the book
            book.save('wijmo.olap.xlsx');
        }

        // build a title for the current view
        function getViewTitle(ng) {
            var title = '';
            for (var i = 0; i < ng.valueFields.length; i++) {
                if (i > 0) title += ', ';
                title += ng.valueFields[i].header;
            }
            title += ' by ';
            if (ng.rowFields.length) {
                for (var i = 0; i < ng.rowFields.length; i++) {
                    if (i > 0) title += ', ';
                    title += ng.rowFields[i].header;
                }
            }
            if (ng.rowFields.length && ng.columnFields.length) {
                title += ' and by ';
            }
            if (ng.columnFields.length) {
                for (var i = 0; i < ng.columnFields.length; i++) {
                    if (i > 0) title += ', ';
                    title += ng.columnFields[i].header;
                }
            }
            return title;
        }

        function transposeView(ng) {
            ng.deferUpdate(function () {

                // save row/col fields
                var rows = [],
                    cols = [];
                for (var r = 0; r < ng.rowFields.length; r++) {
                    rows.push(ng.rowFields[r].header);
                }
                for (var c = 0; c < ng.columnFields.length; c++) {
                    cols.push(ng.columnFields[c].header);
                }

                // clear row/col fields
                ng.rowFields.clear();
                ng.columnFields.clear();

                // restore row/col fields in transposed order
                for (var r = 0; r < rows.length; r++) {
                    ng.columnFields.push(rows[r]);
                }
                for (var c = 0; c < cols.length; c++) {
                    ng.rowFields.push(cols[c]);
                }
            });
        }

        // adds a title cell into an xlsx sheet
        function addTitleCell(sheet, title) {

            // create cell
            var cell = new wijmo.xlsx.WorkbookCell();
            cell.value = title;
            cell.style = new wijmo.xlsx.WorkbookStyle();
            cell.style.font = new wijmo.xlsx.WorkbookFont();
            cell.style.font.bold = true;

            // create row to hold the cell
            var row = new wijmo.xlsx.WorkbookRow();
            row.cells[0] = cell;

            // and add the new row to the sheet
            sheet.rows.splice(0, 0, row);
        }

        // toggle outline mode      
        function toggleOulineMode(e) {
            var pivotGrid = wijmo.Control.getControl('#indexGrid');
            pivotGrid.outlineMode = e.target.checked;
        }
        // toggle ShowValueFieldHeaders   
        function toggleShowValueFieldHeaders(e) {
            var pivotGrid = wijmo.Control.getControl('#indexGrid');
            pivotGrid.showValueFieldHeaders = e.target.checked;
        }
    </script>
}
@section Settings{
    @Html.Partial("_OptionsMenu", optionsModel)
}
@section Description{
    <p>
        @Html.Raw(OlapRes.Index_Text4)<br />
        @Html.Raw(OlapRes.Index_Text10)
    </p>

    <p>@Html.Raw(OlapRes.Index_Text5)</p>

}
@section Summary{
    <p>@Html.Raw(OlapRes.Index_Text6)</p>

}