import { OptionNode } from './option-node';
import { Observable } from 'rxjs';
import { OptionCheckboxGroupComponent } from './option-checkbox-group.component';
export declare class NodePool {
    name: string;
    private _nodes;
    private _touch;
    private _groups;
    constructor(name: string);
    model(): Observable<Array<any> | undefined>;
    touch(): Observable<any>;
    all(): Observable<boolean>;
    get empty(): boolean;
    dispose(): void;
    touched(): void;
    register(value: any): OptionNode;
    unregister(node: OptionNode): void;
    registerGroup(group: OptionCheckboxGroupComponent): void;
    unregisterGroup(group: OptionCheckboxGroupComponent): void;
    private lastValues;
    writeValue(values: Array<any>): void;
    setAll(selected: boolean): void;
}