import { AfterViewInit, ChangeDetectorRef, Injector, OnDestroy, OnInit } from '@angular/core';
import { ChartData, ChartOptions } from 'chart.js';
import { ChartComponent } from '../chart/chart.component';
import { CoreBaseComponent } from '../common/base.component';
import { LegendEntryData } from '../legend/legend-entry/legend-entry.component';
import * as i0 from "@angular/core";
export declare enum LineChartType {
    /**
     * Line chart takes in data as number[]
     */
    Line = 1,
    /**
     * Scatter chart takes in data as ChartPoint[] with x and y coordinates
     */
    Scatter = 2,
    /**
     * Historical chart takes in data at ChartPoint[] with x and y coordinates
     * x coordinates or historical chart are in the format of an integer timestamp
     * so that the tooltips can format the appropriate date
     */
    Historical = 3
}
export interface LineChartData {
    title: string;
    chartData: ChartData;
    currentValueLabel?: string;
    firstCurrentValueLabel?: string;
    secondCurrentValueLabel?: string;
    totalCurrentValueLabel?: string;
    firstLabel?: string;
    secondLabel?: string;
    totalLabel?: string;
    yAxisMinLabel?: string;
    yAxisMaxLabel?: string;
    xAxisMaxLabel?: string;
    xAxisMinLabel?: string;
    ymaxValue?: number;
    type?: LineChartType;
    xAxisMin?: number;
    xAxisMax?: number;
    unitLabel?: string;
    isLoading?: boolean;
}
export declare class LineChartComponent extends CoreBaseComponent implements OnInit, AfterViewInit, OnDestroy {
    private changeDetectorRef;
    /**
     * The source name to use for logging
     */
    protected get logSourceName(): string;
    chart: ChartComponent;
    /**
     *  Function to apply to tooltip data for pretty-printing the value
     */
    tooltipFormatter: Function;
    lineChartData: LineChartData;
    useCustomSettings?: boolean;
    chartLegendData: LegendEntryData[];
    chartOptions: ChartOptions;
    generatedLegendData: LegendEntryData[];
    private readonly primaryLineColor;
    private readonly primaryBackgroundColor;
    private readonly secondaryLineColor;
    private readonly secondaryBackgroundColor;
    private readonly tertiaryLineColor;
    private readonly tertiaryBackgroundColor;
    private readonly defaultSettings;
    get showLegend(): boolean;
    /**
     * Constructs a new instance of @see LineChartComponent
     * @param injector the injector service for the base class of this component
     * @param changeDetectorRef provides data change detection to the line chart
     */
    constructor(injector: Injector, changeDetectorRef: ChangeDetectorRef);
    /**
     * Angular lifecycle hook, called after the component is initialized
     */
    ngOnInit(): void;
    private getDefaultOptions;
    /**
     * Angular lifecycle hook, called after the view is initialized
     */
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    private useDefaultSettings;
    /**
     * generate legend data if currentValueLabelData is given
     */
    generateLegendData(): void;
    /**
     * Throw error if consumer is trying to graph a scatter plot without x y coordinates
     */
    private validateChartType;
    /**
     * return the string for the type of line chart
     * @param type the type of line chart
     */
    getTypeString(type: LineChartType): string;
    /**
     * Returns tool tip label according to the type of chart being used
     * @param tooltipItem - the specific item that needs a tooltip
     * @param data - the linearchartdata object
     */
    private getTooltipLabel;
    /**
     * Refresh the chart when new data is added to lineChartData input
     */
    refresh(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<LineChartComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<LineChartComponent, "sme-line-chart", never, { "tooltipFormatter": "tooltipFormatter"; "lineChartData": "lineChartData"; "useCustomSettings": "useCustomSettings"; "chartLegendData": "chartLegendData"; "chartOptions": "chartOptions"; }, {}, never, never, false, never>;
}