import { VitalLensBase, SessionState } from './VitalLensBase';
import { Method, VitalLensResult } from '../types';
import { Chart } from 'chart.js';
export declare class VitalLensWidget extends VitalLensBase {
    protected videoElement: HTMLVideoElement;
    protected canvasElement: HTMLCanvasElement;
    protected dropZoneElement: HTMLElement;
    protected videoInputElement: HTMLInputElement;
    protected videoDimmerElement: HTMLElement;
    protected videoSpinnerElement: HTMLElement;
    protected videoProgressElement: HTMLElement;
    protected webcamModeButtonElement: HTMLButtonElement;
    protected fileModeButtonElement: HTMLButtonElement;
    protected controlButtonElement: HTMLButtonElement;
    protected methodSelectElement: HTMLSelectElement;
    protected fpsValueElement: HTMLElement;
    protected downloadButtonElement: HTMLButtonElement;
    protected vitalsDimmerElement: HTMLElement;
    protected vitalsSpinnerElement: HTMLElement;
    protected vitalsProgressElement: HTMLElement;
    protected errorPopupElement: HTMLElement;
    protected charts: Record<string, Chart>;
    protected videoFileLoaded: File | null;
    protected currentMethod: Method;
    protected mode: string;
    protected debug: boolean;
    protected readonly ecoModeFps: number;
    protected bufferingTimeout: number | null;
    private _handleResizeBound;
    private waveformPlayer;
    protected readonly WINDOW_SIZE = 8;
    protected sessionState: SessionState;
    protected faceConfHistory: number[];
    protected ppgConfHistory: number[];
    protected ppgSampleCount: number;
    protected displayPpgData: number[];
    protected displayPpgConf: number[];
    protected displayRespData: number[];
    protected displayRespConf: number[];
    constructor();
    connectedCallback(): void;
    disconnectedCallback(): void;
    protected getElements(): void;
    protected initVitalLensInstance(): Promise<void>;
    private configureVitalMeta;
    protected updateUI(result: VitalLensResult): void;
    protected resetUI(): void;
    protected createChart(elementId: string, label: string, baseColor: string): Chart<"line", never[], never>;
    private updateChart;
    private updateNumericValue;
    private setCanvasDimensions;
    private drawFaceBoxForRoi;
    private updateFpsValue;
    private setupWebcam;
    private enablePlaybackDotPlugin;
    private disablePlaybackDotPlugin;
    private loadAndProcessFile;
    private processFile;
    protected startMode(modeToStart: string, initUI: boolean, restartVitalLens: boolean): Promise<void>;
    private restartMode;
    private setupWebcamUI;
    private setupFileModeUI;
    private resetVideoStreamView;
    private resetVideoFileView;
    protected switchMode(newMode: string): Promise<void>;
    private handleVideoProgressEvent;
    protected handleStreamReset(_event: {
        message: string;
    }): Promise<void>;
    private handleResize;
    protected bindEvents(): void;
    private showVideoLoader;
    private hideVideoLoader;
    private clearBufferingTimeout;
    private setBufferingTimeout;
    private showVitalsLoader;
    private hideVitalsLoader;
    destroy(): void;
}
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