# Wijmo_Grid_Filter.Columnfilter ## Content

ColumnFilter Class

Defines a filter for a column on a FlexGrid control.

The ColumnFilter contains a ConditionFilter and a ValueFilter; only one of them may be active at a time.

This class is used by the FlexGridFilter class; you rarely use it directly.

Heirarchy

Constructors

Properties

Methods

Constructors

constructor

Properties

ariaLabel

ariaLabel: string

Gets or sets the aria-label attribute of ColumnFilterEditor host element.

The default value for this property is "Filter Editor for Column".

column

column: Column

Gets the Column being filtered.

conditionFilter

conditionFilter: ConditionFilter

Gets the ConditionFilter in this ColumnFilter.

dataMap

dataMap: DataMap

Gets or sets the DataMap used to convert raw values into display values shown when editing this filter.

The example below assigns a DataMap to Boolean column filters so the filter editor displays 'Yes' and 'No' instead of 'true' and 'false':

import { FlexGridFilter } from '@mescius/wijmo.grid.filter';
var filter = new FlexGridFilter(grid),
    map = new wijmo.grid.DataMap([
            { value: true, caption: 'Yes' },
            { value: false, caption: 'No' },
        ], 'value', 'caption');
for (var c = 0; c < grid.columns.length; c++) {
    if (grid.columns[c].dataType == wijmo.DataType.Boolean) {
        filter.getColumnFilter(c).dataMap = map;
    }
}

filterMode

filterMode: FilterMode

Gets or sets the mode of filtering provided by this filter.

Setting this property to null causes the filter mode to use the value defined by the owner filter's FlexGridFilter.defaultFilterMode property.

filterType

filterType: FilterType

Gets or sets the types of filtering provided by this filter.

Setting this property to null causes the filter to use the value defined by the owner filter's FlexGridFilter.defaultFilterType property.

isActive

isActive: boolean

Gets a value that indicates whether the filter is active.

valueFilter

valueFilter: ValueFilter

Gets the ValueFilter in this ColumnFilter.

Methods

apply

  • apply(value: any): boolean

  • Gets a value that indicates whether a value passes the filter.

    Parameters

    • value: any

      The value to test.

    Returns boolean

clear

  • clear(): void

  • Clears the filter.

    Returns void

implementsInterface

  • implementsInterface(interfaceName: string): boolean

  • Returns true if this object supports a given interface.

    Parameters

    • interfaceName: string

      Name of the interface to look for.

    Returns boolean