import { ExtensionBase } from '../ExtensionBase';
import { Measure3d } from './Measure3d';
/**
 * Extension for measuring distances and projections.
 */
export declare class MeasureExtension extends ExtensionBase {
    static getName: () => string;
    content: any;
    /** Whether the measurement command is active or not. */
    isActive: boolean;
    measure: Measure3d;
    private sharedToolbar;
    private measures;
    sharedToolbarRender(container: HTMLElement): void;
    uiRender(container: HTMLElement): void;
    added(): void;
    deleted(): void;
    onResize(): Promise<void>;
    /**
     * Enables or disables the measurement mode.
     */
    switchRulerMode(): void;
    commandChanged(newCommand: ExtensionBase | undefined): void;
    onChange(): void;
    onMouseClick(e: any): void;
    static getPopupName(): string;
    /**
     * @param viewerName - Owner viewer name.
     */
    constructor(viewerName: string);
}