import { BooleanInput } from '@angular/cdk/coercion';
import { InjectionToken, TemplateRef } from '@angular/core';
/**
 * Injection token that can be used to reference instances of `RDragPreview`. It serves as
 * alternative token to the actual `RDragPreview` class which could cause unnecessary
 * retention of the class and its directive metadata.
 */
export declare const R_DRAG_PREVIEW: InjectionToken<RDragPreview<any>>;
/**
 * Element that will be used as a template for the preview
 * of a RDrag when it is being dragged.
 */
export declare class RDragPreview<T = any> {
    templateRef: TemplateRef<T>;
    /** Context data to be added to the preview template instance. */
    data: T;
    /** Whether the preview should preserve the same size as the item that is being dragged. */
    get matchSize(): boolean;
    set matchSize(value: boolean);
    private _matchSize;
    constructor(templateRef: TemplateRef<T>);
    static ngAcceptInputType_matchSize: BooleanInput;
}
