import { OnDestroy } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { ShortcutEventOutput, ShortcutInput } from './types';
export declare class ShortcutsService implements OnDestroy {
    /**
     * 解析快捷键
     * 并为每个KEY 创建一个函数
     */
    private _shortcuts;
    /**
     * 控制按键时间.
     */
    private throttleTime;
    private _pressed;
    /**
     * Streams of pressed events, can be used instead or with a command.
     */
    pressed$: Observable<ShortcutEventOutput>;
    /**
     * 禁用快捷键
     */
    private disabled;
    private _ignored;
    /**
     * Subscription for on destroy.
     */
    private readonly subscription;
    private keydown$;
    private isAllowed;
    private mapEvent;
    private readonly shortcuts;
    constructor();
    /**
     * Remove subscription.
     */
    ngOnDestroy(): void;
    /**
     * Enable all keyboard shortcuts
     */
    enable(): ShortcutsService;
    /**
     * Disable all keyboard shortcuts
     */
    disable(): ShortcutsService;
    /**
     * Check if all keyboard shortcuts are disabled.
     */
    isDisabled(): boolean;
    /**
     * Add new shortcut/s
     */
    add(shortcuts: ShortcutInput[] | ShortcutInput, instance?: any): ShortcutsService;
    /**
     * bind to the component ngOnDestroy to remove related keys
     * when component is destroyed.
     * @param instance - component to remove keys when ngOnDestroy is called.
     * @param keys
     */
    private bindOnDestroy(instance, keys);
    /**
     * Remove a command based on key or array of keys.
     * can be used for cleanup.
     * @param key
     * @returns
     */
    remove(key: string | string[]): ShortcutsService;
    /**
     * Returns an observable of keyboard shortcut filtered by a specific key.
     * @param key - the key to filter the observable by.
     */
    select(key: string): Observable<ShortcutEventOutput>;
    /**
     * transforms a shortcut to:
     * a predicate function
     */
    private getKeys;
    /**
     * Parse each command using getKeys function
     */
    private parseCommand(command);
}