GridColumn Class

Serves as the base for classes that represent grid columns.

Declaration

export abstract class GridColumn extends DataItemContainer

Remarks

The GridItem supports the following column types:

wdd-grid-columns-overview

GridDimensionColumn - displays values in the bound data member “as is”.
GridHyperlinkColumn - displays links to external resources related to displayed values.
GridMeasureColumn - displays summaries calculated against data in the bound data member.
GridDeltaColumn - binds to two data members, calculates summaries for both and displays the difference between these summaries.
GridSparklineColumn - displays values in the bound data item using sparklines.

Inherited Members

Inheritance

SerializableModel

TypedSerializableModel

GridColumn

constructor(dataItemProvider)

Initializes a new instance of the GridColumn class with specified settings.

Declaration

constructor(
    dataItemProvider: DevExpress.Dashboard.Model.DataDashboardItem,
    dashboardItemJSON?: any,
    serializer?: DevExpress.Analytics.Utils.ModelSerializer
)

Parameters

Name	Type	Description
dataItemProvider	DataDashboardItem
dashboardItemJSON	any	A JSON object used for dashboard deserialization. Do not pass this parameter directly.
serializer	ModelSerializer	An object used for dashboard deserialization. Do not pass this parameter directly.

Properties

actualDataItem Property

Declaration

get actualDataItem(): DevExpress.Dashboard.Model.DataItem

Property Value

Type
DataItem

fixedWidth Property

Declaration

fixedWidth: ko.Observable<number>

Property Value

Type
Observable<number>

totals Property

Gets the collection of totals for the specified Grid column.

Declaration

totals: ko.ObservableArray<DevExpress.Dashboard.Model.GridColumnTotal>

Property Value

Type	Description
ObservableArray<GridColumnTotal>	A GridColumnTotal object that is the collection of Grid column totals.

Remarks

The Grid dashboard item allows you to calculate totals against values displayed in the specified column and show these totals under the column. To create a total for the required column, do the following.

Create the GridColumnTotal object and specify the type of summary function used to calculate a total using the GridColumnTotal.totalType property.
Add the resulting GridColumnTotal object to the totals collection. Note that you can add any number of totals for each column.

You can calculate totals for all types of grid columns (GridColumn descendants), but each column type supports only a specified set of summary functions used to calculate totals. The table below lists the total types supported by different grid columns.

Column Type	Supported Total Types
GridMeasureColumn	Auto Avg Count Max Min Sum
GridDimensionColumn	Min Max Count
GridDeltaColumn	Count
GridSparklineColumn	Count

Totals, except the Auto type, are calculated based on summary values. When the GridColumnTotal.totalType property is set to Auto, the total is calculated based on values of the corresponding data field from the underlying data source. In this case, the Measure.summaryType property value is taken into account to calculate the total. If the specified summaryType type is not matched with supported total types, the Count summary function is used.

weight Property

Declaration

weight: ko.Observable<number>

Property Value

Type
Observable<number>

widthType Property

Declaration

widthType: ko.Observable<DevExpress.Dashboard.Model.GridColumnFixedWidthType>

Property Value

Type
Observable<GridColumnFixedWidthType>

Methods

dispose Method

Disposes of all resources associated with this GridColumn.

Declaration

dispose(): void

grabFrom(column) Method

Declaration

grabFrom(
    column: GridColumn
): void

Parameters

Name	Type
column	`GridColumn`