import { DataVariable, GraphicVariable, RecordSet } from '@dvl-fw/core';
import { Store } from '@ngrx/store';
import { Operator } from '@ngx-dino/core';
import { Observable } from 'rxjs';
import { ApplicationState } from '../../shared/store';
/**
 * Data source interface
 */
export interface DataSource {
    id: string;
    label: string;
    description?: string;
    parent: RecordSet;
    children: DataSource[];
    childrenHidden: boolean;
    columns: DataVariable[];
    data: Observable<any[]>;
    operator: Operator<any, any>;
    level: number;
    hidden: boolean;
    hiddenData: boolean;
    numRows: number;
    streamId: string;
}
export declare class DataService {
    private store;
    /**
     * Behavior subject to emit an updated data source
     */
    private dataSourcesChange;
    /**
     * Allowed label size in the table cells (after which the label is truncated and an ellipsis is added)
     */
    maxCellStringLength: number;
    /**
     * Observable from the dataSourcesChange BehaviorSubject to emit an updated data-source
     */
    dataSourcesChanged: Observable<DataSource[]>;
    /**
     * Data sources array to hold all data sources
     */
    dataSources: DataSource[];
    /**
     * Creates an instance of data service.
     * @param store instance of Store which provides access to the ApplicationState
     */
    constructor(store: Store<ApplicationState>);
    private updateData;
    /**
     * Gets a flat array of data sources
     * @param dataSources array of data-sources
     * @returns flat array of data sources
     */
    getFlatArrayOfDataSources(dataSources: DataSource[]): DataSource[];
    /**
     * Constructs a hierarchy of data-sources
     * @param dataSources array of data-sources
     * @param id id of data-source
     * @param level level of hierarchy
     * @returns an array of data-sources with hierarchical information
     */
    getChildrenForRecord(dataSources: DataSource[], id: string, level: number): DataSource[];
    /**
     * Gets data sources with info on their children
     * @param dataSources array of data-sources
     * @param level level of hierarchy in the hierarchy of data-sources
     * @returns array of data-sources with their children information
     */
    getDataSourceWithChildren(dataSources: DataSource[], level: number): DataSource[];
    /**
     * Toggles the children of a data source
     * @param children array of children data-sources
     */
    toggleChildren(children: DataSource[]): void;
    /**
     * Toggles the data table
     * @param dataSource the data-source associated with the data-table
     */
    toggleDataTable(dataSource: DataSource): void;
    /**
     * Function that adds display variables to be used in the table.
     * This includes the value to display in the cell and the value to
     * display in the tooltip (if any).
     * @param item the source data to display in the table
     * @returns a new item with additional display variables
     */
    private injectDisplayVariables;
    /**
     * Gets data mapping operator
     * @param dataVariables array of data-variables
     * @param graphicVariables array of graphic-variables
     * @param recordSetId record-set-id associated with
     * @returns data variable to graphic variable mapping operator
     */
    getDataMappingOperator(dataVariables: DataVariable[], graphicVariables: GraphicVariable[], recordSetId: string): Operator<any, any>;
}