import { EventEmitter } from '@angular/core';
import { Ng2VkEnterEvent } from '../models/key-event.model';
import { IQwertyKeyboard, Ng2VkCustomKeyboardModel } from '../models/qwerty-keyboard.model';
import { BehaviorSubject, Observable } from 'rxjs';
export declare class Ng2VkService {
    /**
     * Color theme of keyboard
     */
    private _themeColor;
    /**
     * Animation state of keyboard
     */
    private _isAnimating;
    /**
     * Ope state of keyboard
     */
    private _opened;
    /**
     * Model of keyboard keys
     */
    private _keyboardModel;
    /**
     * Key Press Strem
     *
     * Emitting Ng2VkKeyEvent object into input directives
     */
    keyPress$: EventEmitter<string>;
    shift: boolean;
    alt: boolean;
    altShift: boolean;
    /**
     * Focus Stream
     *
     * Emitting void event to focus active input
     */
    focus$: EventEmitter<void>;
    /**
     * Selection Stream
     *
     * Emitting event with direction of selection
     */
    selection$: EventEmitter<string>;
    /**
     * Color Change Stream
     *
     * Emitting event with new theme color
     */
    colorChange$: BehaviorSubject<ThemeColors>;
    /**
     * Open State Stream
     *
     * Stream responsible for open state of keyboard
     */
    openState$: BehaviorSubject<boolean>;
    keyboardModel$: BehaviorSubject<IQwertyKeyboard>;
    /**
     * Shift
     *
     * Boolean value to check if shift is pressed
     */
    private _shift;
    /**
     * Alt
     *
     * Boolean value to check if alt is pressed
     */
    private _alt;
    /**
     * Caps
     *
     * Boolean value to check if caps lock is pressed
     */
    private _caps;
    /**
     * Position
     *
     * Position of the caret in input
     */
    private _position;
    /**
     * Enter Action
     *
     * Callback to be fired after pressing enter. Work on all
     * inputs except textarea or inputs with set vkEnter output
     */
    private _enterAction;
    /**
     * Key Press
     *
     * Emitting keyPress event with keyPress$
     * @param key
     */
    keyPress(key: string): void;
    /**
     * Shift Press
     *
     * Changing next letter to upper case
     */
    shiftPress(): void;
    /**
     * Alt Press
     *
     * Changing next letter to alternative value
     */
    altPress(): void;
    /**
     * Caps Lock Press
     *
     * Changing next letters to upper case until caps lock / shift press again
     */
    capsLockPress(): void;
    /**
     * Enter Press
     *
     * Emitting enter press event with keyPress$
     */
    enterPress(): void;
    /**
     * Arrow Press
     *
     * Emmitting left or right arrow press with keyPress$.
     * Changing positon of caret in input.
     * @param key
     */
    arrowPress(key: 'left' | 'right'): void;
    _makeSelection(key: 'left' | 'right'): void;
    /**
     * Set Enter Action
     *
     * Set callback for enter press action
     * @param action
     */
    setEnterAction(action: (event?: Ng2VkEnterEvent) => any): void;
    /**
     * Get Enter Action
     *
     * Returns callback for enter press action
     */
    getEnterAction(): (event?: Ng2VkEnterEvent) => any;
    /**
     * Get Open State
     *
     * Get open state of keyboard
     */
    getOpenState(): Observable<boolean>;
    /**
     * Open Keyboard
     *
     * Open keyboard and set animation state
     */
    openKeyboard(): void;
    /**
     * Close Keyboard
     *
     * Close keyboard and set animation state
     */
    closeKeyboard(): void;
    /**
     * Toggle keyboard
     *
     * Open/close keyboard
     */
    toggleKeyboard(): void;
    /**
     * Is Animating
     *
     * Get animation state of keyboard
     */
    isAnimating(): boolean;
    /**
     * Set Theme Color
     *
     * Set theme color of keyboard
     * @param color
     */
    setThemeColor(color: ThemeColors): void;
    /**
     * Register Keys
     *
     * Register custom letter keys
     * @param keys
     */
    registerKeys(keys: Ng2VkCustomKeyboardModel): void;
    /**
     * Get Keyboard Model
     */
    getKeyboardModel(): Observable<IQwertyKeyboard>;
    private _mapKeyboard;
    private _mapLine;
    private _mapKey;
    private _altShiftMap;
    private _altMap;
    private _shiftMap;
    private _normalMap;
}
/**
 * Available color themes
 */
export declare type ThemeColors = 'blue' | 'red' | 'green' | 'black' | 'orange' | 'custom';