import { EventEmitter, OnInit } from '@angular/core';
import { ColumnDefinition } from 'verben-ng-ui/src/lib/components/data-table';
import { FilterOperator, FilterCondition } from './data-filter.types';
import * as i0 from "@angular/core";
export declare class DataFilterComponent<T> implements OnInit {
    columns: ColumnDefinition<T>[];
    data: T[];
    filterApplied: EventEmitter<FilterCondition[]>;
    resetFilter: EventEmitter<any>;
    filterableColumns: ColumnDefinition<T>[];
    availableOperators: FilterOperator[];
    savedFilters: (FilterCondition & {
        selected: boolean;
    })[];
    currentFilter: Partial<FilterCondition>;
    showAllFilters: boolean;
    maxVisibleItems: number;
    currentColumnType: 'string' | 'number' | 'date' | null;
    ngOnInit(): void;
    private initializeFilterableColumns;
    onColumnSelect(columnId: string): void;
    addFilter(): void;
    getFilterDescription(filter: FilterCondition): string;
    private getOperatorLabel;
    private determineColumnType;
    private resetCurrentFilter;
    resetAll(): void;
    applyFilters(): void;
    getColumnLabel(columnId: string): string;
    get visibleFilters(): (FilterCondition & {
        selected: boolean;
    })[];
    get activeFilterCount(): number;
    static ɵfac: i0.ɵɵFactoryDeclaration<DataFilterComponent<any>, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DataFilterComponent<any>, "lib-data-filter", never, { "columns": { "alias": "columns"; "required": false; }; "data": { "alias": "data"; "required": false; }; }, { "filterApplied": "filterApplied"; "resetFilter": "resetFilter"; }, never, never, false, never>;
}