import { OnChanges, OnDestroy, OnInit } from "@angular/core";
import { Subscription } from "rxjs";
import { UsaComboBoxComponent } from "../combo-box/combo-box.component";
import * as i0 from "@angular/core";
export declare class UsaTimePicker implements OnInit, OnChanges, OnDestroy {
    private hostComboBox;
    readonly MAX_TIME: number;
    readonly MIN_TIME = 0;
    readonly LABEL_FIELD = "label";
    readonly VALUE_FIELD = "value";
    /**
     * Defines minimum selectable time within a 24 hour window.
     * This can be a date object or a string in hh:mm in 24-hour format.
     * The default min time is 00:00
     */
    minTime: Date | string;
    /**
     * Defines the maximum selectable time within a 24 hour window.
     * This can be a date object or a string in hh:mm in 24-hour format.
     * The default max time is 23:59
     */
    maxTime: Date | string;
    /**
     * The number of minutes between options. The minimum value is 1.
     * The default value is 30
     */
    timeStep: number;
    /**
     * Filter function for when user types in input. This function
     * takes two parameters, current user input, and list of time
     * to parse input over. It should return a number which represents
     * the index within the values to select based on user input.
     * Index of -1 indicates no selection. A default filter function
     * is provided by the component, but a custom one can be passed in
     * if desired.
     */
    filterBy: (input: string, values: string[]) => number;
    _inputChangeSubscription: Subscription;
    constructor(hostComboBox: UsaComboBoxComponent);
    ngOnChanges(): void;
    ngOnInit(): void;
    ngOnDestroy(): void;
    /**
     * Initializes dropdown values for timepixker as well as filter function
     * to use
     */
    private initializeDropdownItems;
    /**
     * Generates list of times to display to the user.
     * This list is created based on user's min/max inputs
     * as well as time step
     * @returns - list of {label, value} pair of time to display in dropdown
     */
    private genetateItems;
    /**
     * Adds additional zeros if needed
     * @param value
     * @param length
     * @returns
     */
    private padZeros;
    /**
     * Given minuutes, parses number of hours and minutes to represent that time.
     * IE - 0 minutes would be 0:00 AM, 60 minutes would be 1:00 AM, etc
     * @param minutes
     */
    private getTimeContext;
    /**
     * Parse a string of hh:mm into minutes
     *
     * @param {string} timeStr the time string to parse
     * @returns {number} the number of minutes
     */
    private parseTimeString;
    /**
     * Default filter search if one is not provided. Used to find
     * time within dropdown values that best matches user input
     * @param input - user input
     * @param values - list of values to search
     * @returns - index in values list if match is found, -1 otherwise
     */
    defaultFilter(input: string, values: string[]): number;
    static ɵfac: i0.ɵɵFactoryDeclaration<UsaTimePicker, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<UsaTimePicker, "[usa-time-picker]", ["usaTimePicker"], { "minTime": { "alias": "minTime"; "required": false; }; "maxTime": { "alias": "maxTime"; "required": false; }; "timeStep": { "alias": "timeStep"; "required": false; }; "filterBy": { "alias": "filterBy"; "required": false; }; }, {}, never, never, false, never>;
}