import { NgZone, ElementRef, TemplateRef, OnInit } from '@angular/core';
import { BaseWidget } from '../base-widget';
import { NgAisInstantSearch } from '../instantsearch/instantsearch';
import { NgAisIndex } from '../index-widget/index-widget';
declare type Status = 'initial' | 'askingPermission' | 'waiting' | 'recognizing' | 'finished' | 'error';
declare type ErrorCode = 'no-speech' | 'aborted' | 'audio-capture' | 'network' | 'not-allowed' | 'service-not-allowed' | 'bad-grammar' | 'language-not-supported';
declare type TemplateContext = {
    status: Status;
    transcript: string;
    isSpeechFinal: boolean;
    errorCode?: ErrorCode;
    isBrowserSupported: boolean;
    isListening: boolean;
};
declare type VoiceListeningState = {
    status: Status;
    transcript: string;
    isSpeechFinal: boolean;
    errorCode?: ErrorCode;
};
declare type State = {
    isBrowserSupported: boolean;
    isListening: boolean;
    toggleListening: () => void;
    voiceListeningState: VoiceListeningState;
    templateContext: TemplateContext;
};
export declare class NgAisVoiceSearch extends BaseWidget implements OnInit {
    parentIndex: NgAisIndex;
    instantSearchInstance: NgAisInstantSearch;
    private zone;
    button: TemplateRef<ElementRef>;
    status: TemplateRef<ElementRef>;
    searchAsYouSpeak?: boolean;
    buttonTitle: string;
    disabledButtonTitle: string;
    state: State;
    constructor(parentIndex: NgAisIndex, instantSearchInstance: NgAisInstantSearch, zone: NgZone);
    ngOnInit(): void;
    handleClick: (event: MouseEvent) => void;
    isNotAllowedError: () => boolean;
    updateState: (state: State) => void;
}
export {};