import { Layout } from './layout.js';
import { NodeBehavior } from './node-behavior.js';
import { Measurement, Projection, ProjectionNode } from './projection-node.js';
/**
 * Decorator for a {@link ProjectionNode} instance.
 *
 * Tree query methods will return the behavior instances of the
 * actual nodes, by dynamically decorating the returned nodes
 * via the {@link decorate} method.
 *
 * It is recommended for concrete behavior classes to offer an approach
 * to ensure that the behavior instances are unique for each node, so that
 * the same behavior instance is not created multiple times for the same node.
 */
export declare abstract class ProjectionNodeBehavior extends NodeBehavior implements ProjectionNode {
    #private;
    protected constructor(kernel: ProjectionNode);
    element(): HTMLElement;
    reset(): void;
    measure(): Measurement;
    measurement(): Measurement | null;
    project(dest: Layout): Projection;
    projection(): Projection | null;
}
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