import { Router } from '@angular/router';
import { KitLoadingProgress } from './kit-loading-progress';
/**
 * Service for providing loading state.
 *
 *
 * ### Usage
 *
 * #### Global progress
 *
 * Provide `KitLoadingService`, get `global` progress and subscribe on state changes:
 *
 * ```typescript
 * constructor(private loading: KitLoadingService) {
 * }
 *
 * ngOnInit() {
 *   this.loading.global.stateChanges
 *     .subscribe(s => {
 *       this.loadingState = s;
 *     });
 * }
 * ```
 *
 * There are two states: `KitLoadingState.InProgress` and `KitLoadingState.None`.
 *
 * State changes on `NavigationStart` and `NavigationEnd` event by default.
 *
 * Also you can run progress manually. For example, show loading progress while data is fetching:
 *
 * ```typescript
 * this.loading.global.start('data');
 * this.dataService.get().subscribe(() => {
 *   ...
 *   this.loading.global.end('data');
 * });
 * ```
 *
 * State switched to `None` only after all started events was ended.
 *
 * #### Custom progress
 *
 * Get a progress by `.progress(key: string)` method, if progress is not presented it will be automatically created.
 *
 * Custom progresses do not watch on router events, only on manual `start`/`end` calls.
 *
 * ```typescript
 * this.loading.progress('data-loading').start('data');
 * this.dataService.get().subscribe(() => {
 *   ...
 *   this.loading.progress('data-loading').end('data');
 * });
 * ```
 *
 *
 * ### Example
 *
 * * collection:loading-bar -
 * [sources](https://github.com/ngx-kit/ngx-kit/tree/master/packages/collection/lib/ui-loading-bar),
 * [demo](https://ngx-kit.com/collection/module/ui-loading-bar)
 */
export declare class KitLoadingService {
    private router;
    private progresses;
    constructor(router: Router);
    readonly global: KitLoadingProgress;
    progress(id: string): KitLoadingProgress;
}