import { OnChanges, SimpleChanges } from '@angular/core';
import { NavigationMode } from '../navigation/navigation-mode.interface';
import { WizardComponent } from '../components/wizard.component';
import * as i0 from "@angular/core";
/**
 * The [[awNavigationMode]] directive can be used to customize wizard'd navigation mode.
 *
 * There are several usage options:
 *
 * ### Option 1. Customize the default navigation mode with [[navigateBackward]] and/or [[navigateForward]] inputs.
 *
 * ```html
 * <aw-wizard [awNavigationMode] navigateBackward="deny" navigateForward="allow">...</aw-wizard>
 * ```
 *
 * ### Option 2. Pass in a custom navigation mode
 *
 * ```typescript
 * import { BaseNavigationMode } from 'angular-archwizard'
 *
 * class CustomNavigationMode extends BaseNavigationMode {
 *
 *   // ...
 * }
 * ```
 *
 * ```typescript
 * @Component({
 *   // ...
 * })
 * class MyComponent {
 *
 *   navigationMode = new CustomNavigationMode();
 * }
 * ```
 *
 * ```html
 * <aw-wizard [awNavigationMode]="navigationMode">...</aw-wizard>
 * ```
 *
 * ### Additional Notes
 *
 * - Specifying a custom navigation mode takes priority over [[navigateBackward]] and [[navigateForward]] inputs
 *
 * - Omitting the [[awNavigationMode]] directive or, equally, specifying just [[awNavigationMode]] without
 *   any inputs or parameters causes the wizard to use the default "strict" navigation mode equivalent to
 *
 * ```html
 * <aw-wizard [awNavigationMode] navigateBackward="deny" navigateForward="allow">...</aw-wizard>
 * ````
 */
export declare class NavigationModeDirective implements OnChanges {
    private wizard;
    /**
     * Custom navigation mode instance (optional).
     */
    awNavigationMode: NavigationMode | null;
    /**
     * A parameter for the default navigation mode.  Controls whether wizard steps before the current step are navigable:
     *
     * - `navigateBackward="deny"` -- the steps are not navigable
     * - `navigateBackward="allow"` -- the steps are navigable
     */
    navigateBackward: 'allow' | 'deny' | null;
    /**
     * A parameter for the default navigation mode.  Controls whether wizard steps after the current step are navigable:
     *
     * - `navigateForward="deny"` -- the steps are not navigable
     * - `navigateForward="allow"` -- the steps are navigable
     * - `navigateForward="visited"` -- a step is navigable iff it was already visited before
     */
    navigateForward: 'allow' | 'deny' | 'visited' | null;
    constructor(wizard: WizardComponent);
    ngOnChanges(changes: SimpleChanges): void;
    private getNavigationMode;
    static ɵfac: i0.ɵɵFactoryDeclaration<NavigationModeDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NavigationModeDirective, "[awNavigationMode]", never, { "awNavigationMode": "awNavigationMode"; "navigateBackward": "navigateBackward"; "navigateForward": "navigateForward"; }, {}, never, never, false, never>;
}