import { ActiveDescendantKeyManager } from '@angular/cdk/a11y';
import { AfterContentInit, ChangeDetectorRef, ElementRef, EventEmitter, InjectionToken, QueryList, TemplateRef } from '@angular/core';
import { OuiOption } from '../core/option/option';
import { OuiOptgroup } from '../core/option/optgroup';
import * as i0 from "@angular/core";
/** Event object that is emitted when an autocomplete option is selected. */
export declare class OuiAutocompleteSelectedEvent {
    /** Reference to the autocomplete panel that emitted the event. */
    source: OuiAutocomplete;
    /** Option that was selected. */
    option: OuiOption;
    constructor(
    /** Reference to the autocomplete panel that emitted the event. */
    source: OuiAutocomplete, 
    /** Option that was selected. */
    option: OuiOption);
}
/** Default `oui-autocomplete` options that can be overridden. */
export interface OuiAutocompleteDefaultOptions {
    /** Whether the first option should be highlighted when an autocomplete panel is opened. */
    autoActiveFirstOption?: boolean;
}
/** Injection token to be used to override the default options for `oui-autocomplete`. */
export declare const OUI_AUTOCOMPLETE_DEFAULT_OPTIONS: InjectionToken<OuiAutocompleteDefaultOptions>;
/** @docs-private */
export declare function OUI_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY(): OuiAutocompleteDefaultOptions;
export declare class OuiAutocomplete implements AfterContentInit {
    private _changeDetectorRef;
    private _elementRef;
    /** Manages active item in option list based on key events. */
    _keyManager: ActiveDescendantKeyManager<OuiOption>;
    /** Whether the autocomplete panel should be visible, depending on option length. */
    showPanel: boolean;
    /** Whether the autocomplete panel is open. */
    get isOpen(): boolean;
    _isOpen: boolean;
    /** @docs-private */
    template: TemplateRef<any>;
    /** Element for the panel containing the autocomplete options. */
    panel: ElementRef;
    /** @docs-private */
    options: QueryList<OuiOption>;
    /** @docs-private */
    optionGroups: QueryList<OuiOptgroup>;
    /** Function that maps an option's control value to its display value in the trigger. */
    displayWith: ((value: any) => string) | null;
    /**
     * Whether the first option should be highlighted when the autocomplete panel is opened.
     * Can be configured globally through the `OUI_AUTOCOMPLETE_DEFAULT_OPTIONS` token.
     */
    get autoActiveFirstOption(): boolean;
    set autoActiveFirstOption(value: boolean);
    private _autoActiveFirstOption;
    /**
     * Specify the width of the autocomplete panel.  Can be any CSS sizing value, otherwise it will
     * match the width of its host.
     */
    panelWidth: string | number;
    /** Event that is emitted whenever an option from the list is selected. */
    readonly optionSelected: EventEmitter<OuiAutocompleteSelectedEvent>;
    /** Event that is emitted when the autocomplete panel is opened. */
    readonly opened: EventEmitter<void>;
    /** Event that is emitted when the autocomplete panel is closed. */
    readonly closed: EventEmitter<void>;
    /**
     * Takes classes set on the host oui-autocomplete element and applies them to the panel
     * inside the overlay container to allow for easy styling.
     */
    set classList(value: string);
    _classList: {
        [key: string]: boolean;
    };
    /** Unique ID to be used by autocomplete trigger's "aria-owns" property. */
    id: string;
    constructor(_changeDetectorRef: ChangeDetectorRef, _elementRef: ElementRef<HTMLElement>, defaults: OuiAutocompleteDefaultOptions);
    ngAfterContentInit(): void;
    /**
     * Sets the panel scrollTop. This allows us to manually scroll to display options
     * above or below the fold, as they are not actually being focused when active.
     */
    _setScrollTop(scrollTop: number): void;
    /** Returns the panel's scrollTop. */
    _getScrollTop(): number;
    /** Panel should hide itself when the option list is empty. */
    _setVisibility(): void;
    /** Emits the `select` event. */
    _emitSelectEvent(option: OuiOption): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<OuiAutocomplete, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<OuiAutocomplete, "oui-autocomplete", ["ouiAutocomplete"], { "displayWith": { "alias": "displayWith"; "required": false; }; "autoActiveFirstOption": { "alias": "autoActiveFirstOption"; "required": false; }; "panelWidth": { "alias": "panelWidth"; "required": false; }; "classList": { "alias": "class"; "required": false; }; }, { "optionSelected": "optionSelected"; "opened": "opened"; "closed": "closed"; }, ["options", "optionGroups"], ["*"], false, never>;
}
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