import { OnInit, OnDestroy } from 'angular2/lifecycle_hooks';
import { ControlContainer } from './control_container';
import { ControlGroup } from '../model';
import { Form } from './form_interface';
/**
 * Creates and binds a control group to a DOM element.
 *
 * This directive can only be used as a child of {@link NgForm} or {@link NgFormModel}.
 *
 * ### Example
 *
 * In this example, we create the credentials and personal control groups.
 * We can work with each group separately: check its validity, get its value, listen to its changes.
 *
 *  ```
 * @Component({
 *      selector: "signup-comp",
 *      directives: [FORM_DIRECTIVES],
 *      template: `
 *              <form #f="form" (submit)='onSignUp(f.value)'>
 *                <div ng-control-group='credentials' #credentials="form">
 *                  Login <input type='text' ng-control='login'>
 *                  Password <input type='password' ng-control='password'>
 *                </div>
 *                <div *ng-if="!credentials.valid">Credentials are invalid</div>
 *
 *                <div ng-control-group='personal'>
 *                  Name <input type='text' ng-control='name'>
 *                </div>
 *                <button type='submit'>Sign Up!</button>
 *              </form>
 *      `})
 * class SignupComp {
 *  onSignUp(value) {
 *    // value === {
 *    //  personal: {name: 'some name'},
 *    //  credentials: {login: 'some login', password: 'some password'}}
 *  }
 * }
 *
 *  ```
 */
export declare class NgControlGroup extends ControlContainer implements OnInit, OnDestroy {
    private _validators;
    constructor(parent: ControlContainer, validators: Function[]);
    onInit(): void;
    onDestroy(): void;
    control: ControlGroup;
    path: string[];
    formDirective: Form;
    validator: Function;
}
