Implements an Excel-style filter for FlexSheet controls.
To enable filtering on a FlexSheet control, create an instance of the FlexSheetFilter and pass the grid as a parameter to the constructor.
constructor(grid: FlexGrid, options?: any): FlexGridFilter
Initializes a new instance of the FlexGridFilter class.
Initialization options for the FlexGridFilter.
Gets the active ColumnFilterEditor.
This property allows you to customize the filter editor when handling the filterChanging event. It returns null when no filters are being edited.
Gets or sets the default filter type to use.
This value can be overridden in filters for specific columns. For example, the code below creates a filter that filters by conditions on all columns except the "ByValue" column:
var f = new wijmo.grid.filter.FlexGridFilter(flex);
f.defaultFilterType = wijmo.grid.filter.FilterType.Condition;
var col = flex.columns.getColumn('ByValue'),
cf = f.getColumnFilter(col);
cf.filterType = wijmo.grid.filter.FilterType.Value;
The default value for this property is FilterType.Both.
Gets or sets a value that determines whether the filter should include only values selected by the filterText property.
This property is set to true by default, which matches Excel's behavior.
Set it to false to disable this behavior, so searching only affects which items are displayed on the list and not which items are included in the filter.
Gets or sets an array containing the names or bindings of the columns that have filters.
Setting this property to null or to an empty array adds filters to all columns.
Gets a reference to the FlexGrid that owns this filter.
Gets or sets a value indicating whether the FlexGridFilter adds filter editing buttons to the grid's column headers.
If you set this property to false, then you are responsible for providing a way for users to edit, clear, and apply the filters.
The default value for this property is true.
Gets or sets a value indicating whether the filter editor should include sort buttons.
By default, the editor shows sort buttons like Excel does. But since users can sort columns by clicking their headers, sort buttons in the filter editor may not be desirable in some circumstances.
The default value for this property is true.
apply(): void
Applies the current column filters to the sheet.
closeEditor(): void
Closes the filter editor.
editColumnFilter(col: any, ht?: HitTestInfo): void
Shows the filter editor for the given grid column.
The Column that contains the filter to edit.
A HitTestInfo object containing the range of the cell that triggered the filter display.
getColumnFilter(col: any, create?: boolean): FlexSheetColumnFilter
Gets the filter for the given column.
Whether to create the filter if it does not exist.
onFilterApplied(e?: EventArgs): void
Raises the filterApplied event.
onFilterChanged(e: CellRangeEventArgs): void
Raises the filterChanged event.
onFilterChanging(e: CellRangeEventArgs): boolean
Raises the filterChanging event.
CellRangeEventArgs that contains the event data.
Occurs after a column filter has been edited by the user.
Use the event parameters to determine the column that owns the filter and whether changes were applied or canceled.
Occurs when a column filter is about to be edited by the user.
Use this event to customize the column filter if you want to override the default settings for the filter.
For example, the code below sets the operator used by the filter conditions to 'contains' if they are null:
filter.filterChanging.addHandler(function (s, e) {
var cf = filter.getColumnFilter(e.col);
if (!cf.valueFilter.isActive && cf.conditionFilter.condition1.operator == null) {
cf.filterType = wijmo.grid.filter.FilterType.Condition;
cf.conditionFilter.condition1.operator = wijmo.grid.filter.Operator.CT;
}
});