import { type OnDestroy } from '@angular/core';
import * as i0 from "@angular/core";
export declare class SelectionService implements OnDestroy {
    private readonly document;
    private readonly ngZone;
    private readonly platformId;
    private readonly selectedElements;
    private readonly registeredElements;
    private isDragging;
    private clickedOnScene;
    private startX;
    private startY;
    private readonly dragThreshold;
    private currentTarget;
    private readonly boundMouseDown;
    private readonly boundMouseMove;
    private readonly boundMouseUp;
    constructor();
    ngOnDestroy(): void;
    /**
     * Registers an element for selection tracking
     * @param element HTML element to track
     * @param callback Callback function triggered when selection changes
     * @returns Function to unregister
     */
    registerElement(element: HTMLElement, callback: (selected: boolean) => void): () => void;
    /**
     * Unregisters an element
     * @param element HTML element to unregister
     */
    unregisterElement(element: HTMLElement): void;
    /**
     * Selects an element
     * @param element HTML element to select
     * @param exclusive If true, deselects all other elements
     */
    selectElement(element: HTMLElement, exclusive?: boolean): void;
    /**
     * Deselects an element
     * @param element HTML element to deselect
     */
    deselectElement(element: HTMLElement): void;
    /**
     * Clears selection of all elements except the excluded one
     * @param exceptElement Element to exclude from clearing
     */
    clearSelection(exceptElement?: HTMLElement): void;
    /**
     * Checks if an element is selected
     * @param element HTML element to check
     * @returns true if the element is selected
     */
    isSelected(element: HTMLElement): boolean;
    /**
     * Gets all selected elements
     * @returns Array of selected HTML elements
     */
    getSelectedElements(): HTMLElement[];
    /**
     * Mouse down event handler
     */
    private onMouseDown;
    /**
     * Mouse move event handler
     */
    private onMouseMove;
    /**
     * Mouse up event handler
     */
    private onMouseUp;
    /**
     * Finds the closest parent element that is registered in the service
     */
    private findRegisteredParent;
    /**
     * Resets the drag state
     */
    private reset;
    static ɵfac: i0.ɵɵFactoryDeclaration<SelectionService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SelectionService>;
}