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DEMOS DOC DESIGNER API
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(Showing Draft Content)

Grouping

TableSheet supports grouping the data source by the specified fields, that is, merging the same cell contents in a single cell automatically. The grouped columns are placed left to the base columns, and they consist of the following types of columns:

  • Base column: Contains the original column value.

  • Summary column: Contains aggregate results calculated by a user-defined formula.

  • Slicer column: Contains the slices of the aggregate results.

The following image shows the different types of columns in tablesheet grouping.



You can use the TableSheet class methods groupBy and removeGroupBy to add and remove grouping, respectively. The following code sample shows how to add grouped columns including summary columns and slicer columns.

function grouping() {
    //Create groupBy by single field (Selling package), with summary fields and slice fields
    sheet.groupBy([
        {
            caption: "Selling Package", field: "sellingPackage", width: 150, style: { backColor: "#F9CA9A" },
            summaryFields: [
                {
                    caption: "SUM(Unit Price)",
                    formula: "=SUM([unitPrice])",
                    slice: { field: "=YEAR([@validFrom])", width: 120, style: { backColor: "#FCE3CA", formatter: "#,##0.00" } },
                    width: 150,
                    style: { backColor: "#FAD7B2", formatter: "#,##0.00" }
                }
            ]
        }
    ]);
}

Grouping Layout

TableSheet offers Tabular, Outlines, and Condensed grouping layouts that enable you to switch between the modes to optimize the presentation of your grouped data.

Tabular Mode

In this mode, the category or calculation columns are generated for grouping fields, summaries, and slices. The following image depicts the Tabular layout which groups the tablesheet data basis “Office” column.

image

The following sample code shows how to implement the Tabular grouping layout.

sheet.options.groupLayout.mode = GC.Spread.Sheets.TableSheet.GroupingLayout.tabular;

Outline Mode

In this mode, the grouping field name and values are added into the header and displayed before each group of items, providing a hierarchical structure. The following image depicts the Outline mode.

image

The following sample code shows how to implement the Outline grouping layout.

sheet.options.groupLayout.mode = GC.Spread.Sheets.TableSheet.GroupingLayout.outline;

Condensed Mode

This mode streamlines the display by making headers and footers thinner by consolidating all header information and aggregations into a single line. The following image depicts the Condensed mode.

image

The following sample code shows how to implement the Condensed grouping layout.

sheet.options.groupLayout.mode = GC.Spread.Sheets.TableSheet.GroupingLayout.condensed;

Limitations

  • Outline and Condensed grouping layouts do not display slice grouping configurations, while Tabular layout does not display position and relateTo settings.

  • Condensed and Outline layout modes allow you to display only the first summary result in case more than one summary result appears in the header or footer.

  • detailColumnsVisible method do not work in the Outline and Condensed layout modes.

Note: You can use SpreadJS Designer to apply these Grouping layout settings. For more information, refer to TableSheet Design Mode.