import type { UndoManager, Viewer3d, THREE } from "@x-viewer/core";
/**
 * Scene graph edit operations for CAD mode ({@link Viewer3d.enableSceneEditing}).
 * Pushes {@link Command}s to the viewer's single {@link UndoManager} stack.
 */
export declare class SceneEditActions {
    private readonly viewer;
    private readonly undoManager;
    private clipboard?;
    constructor(viewer: Viewer3d, undoManager: UndoManager);
    hasClipboard(): boolean;
    copySelection(): boolean;
    pasteSelection(): boolean;
    duplicateNode(node: THREE.Object3D): boolean;
    private insertClone;
    private resolvePastePlacement;
    private isModelRoot;
    deleteSelection(): boolean;
    /**
     * Re-parents {@link object} under {@link newParent} at {@link targetIndex}.
     * Records undo when the scene graph actually changes.
     */
    reparentSceneNode(object: THREE.Object3D, newParent: THREE.Object3D, targetIndex: number): boolean;
}