import { EventEmitter, Injector, OnInit } from '@angular/core';
import { FormControl } from '@angular/forms';
import { ValidationAlerts } from '../../validation-alert/validation-alert';
import { DateLikeFormFieldComponent } from '../date-like/date-like-form-field.component';
import * as i0 from "@angular/core";
export interface TimeBlock {
    display: string;
    value: number;
    isSelected: boolean;
}
export declare enum Meridiem {
    AM = "am",
    PM = "pm"
}
export declare type NullableMeridiem = null | Meridiem;
export interface MeridiemBlock {
    display: string;
    value: Meridiem;
    isSelected: boolean;
}
export interface Spin {
    value: number;
    pivot: number;
}
/**
 * Clock Form Field Component
 */
export declare class ClockFormFieldComponent extends DateLikeFormFieldComponent implements OnInit {
    /**
     *  Const getter for The visible number of rows for the clock component.
     */
    private static get visibleRowCount();
    /**
     * Returns maximum number of hours depending of the hour format
     */
    private get maxHours();
    /**
     * Return the maximum number of minutes in an hour
     */
    private maxMinutes;
    /**
     * The source name to use for logging
     */
    protected get logSourceName(): string;
    showConfirmation: boolean;
    accepted: EventEmitter<any>;
    cleared: EventEmitter<any>;
    /**
     * Internal selected time value
     */
    viewportTime: Date;
    /**
     * Gets the selected hours
     */
    private get viewportHour();
    /**
     * Gets the selected minutes
     */
    private get viewportMinute();
    /**
     * A list of hours in the clock
     */
    hours: TimeBlock[];
    /**
     * A list of minutes in the clock
     */
    minutes: TimeBlock[];
    /**
     * A list of minutes in the clock
     */
    meridiems: MeridiemBlock[];
    /**
     * The initial meridian should remain at the top
     */
    private initialMeridiem;
    /**
     * indicates the meridiem of the current time
     */
    get viewportMeridiem(): NullableMeridiem;
    /**
     * Current spun hour and the pivot point
     */
    private spinHour;
    /**
     * Current spun minute and the pivot point
     */
    private spinMinute;
    /**
     * indicates if a value change is expected
     */
    private localeDateFormat;
    /**
     * Answers, is user currently scrolling down?
     */
    private isScrollDown;
    /**
     * indicates if a value change is expected
     */
    private localeDateFormatOptions;
    private get use12HourFormat();
    /**
     * A workaround to have Screen reader know this is a required "input" field.
     */
    get ariaLabel(): string;
    /**
     * Initializes a new instance of the @see ClockFormFieldComponent class.
     * @param injector The angular injection service. required by @see SmeInjectableBase decorator in the @see BaseComponent class
     */
    constructor(injector: Injector);
    /**
     * Implementation of angular OnInit interface
     */
    ngOnInit(): void;
    /**
     * Indicates if a given day is selected
     */
    isMeridiemSelected(value: Meridiem): boolean;
    /**
     * Occurs when an hour is clicked
     */
    onHourClicked(event: MouseEvent, hour: TimeBlock): void;
    /**
     * Occurs when a key is pressed down on a hour block
     */
    onHourKeydown(event: KeyboardEvent): void;
    /**
     * Occurs when the mouse wheel is moved on the hour column
     */
    onHourWheel(event: WheelEvent): void;
    /**
     * Occurs when any column is scrolled
     */
    onColumnScroll(event: Event): void;
    /**
     * Selected the previous hour block from the current one
     */
    goToPreviousHour(): void;
    /**
     * Selected the next hour block from the current one
     */
    goToNextHour(): void;
    /**
     * Sets the hour from a time block
     */
    private setHour;
    /**
     * Occurs when an minute is clicked
     */
    onMinuteClicked(event: MouseEvent, minute: TimeBlock): void;
    /**
     * Occurs when a key is pressed down on a minute block
     */
    onMinuteKeydown(event: KeyboardEvent): void;
    /**
     * Occurs when the mouse wheel is moved on the minute column
     */
    onMinuteWheel(event: WheelEvent): void;
    /**
     * Selected the previous minute block from the current one
     */
    goToPreviousMinute(): void;
    /**
     * Selected the next minute block from the current one
     */
    goToNextMinute(): void;
    /**
     * Sets the minute from a time block
     */
    private setMinute;
    /**
     * Parse an hour depending on the current format
     */
    private getParsedHour;
    /**
     * Convert a 12 hour system value to twenty four hour
     */
    private convertTo24Hours;
    /**
     * Occurs when an meridiem is clicked
     */
    onMeridiemClicked(event: MouseEvent, meridiem: Meridiem): void;
    /**
     * Occurs when a key is pressed down on a meridiem block
     */
    onMeridiemKeydown(event: KeyboardEvent): void;
    /**
     * Occurs when the mouse wheel is moved on the meridiem column
     */
    onMeridiemWheel(event: WheelEvent): void;
    /**
     * Toggles the meridiem between AM and PM. No-Op if meridiem is not valid in the current locale
     */
    toggleMeridiem(meridiem?: Meridiem): void;
    /**
     * Sets the meridiem to either AM or PM. No-Op if meridiem is not valid in the current locale
     */
    setMeridiem(meridiem: Meridiem): void;
    /**
     * Called when accept button is clicked to commit changes
     */
    onAcceptClicked(event: Event): void;
    /**
     * Updates either the form value or the viewport value depending on whether the value should be persisted
     */
    private updateValueOrViewPortTime;
    /**
     * Occurs every time the value of the control changes, in the UI or programmatically.
     * @param value the value of the form control
     */
    protected onValueChanged(value: any): void;
    /**
     * Performs validation that is internal to this control
     * @param c The form control attached to this instance
     */
    protected validate(c: FormControl): ValidationAlerts;
    /**
     * Handles the wheel spin on columns. No value selection is made mimicking the behavior in Chromium Edge
     */
    private handleWheelSpin;
    /**
     * Applies the focus to a the hours column
     */
    private focusOnHours;
    /**
     * Applies the focus to a the minutes column
     */
    private focusOnMinute;
    /**
     * Applies the focus to a the meridiem column
     */
    private focusOnMeridiem;
    /**
     * Applies the focus to a column
     */
    private focusOnColumn;
    /**
     * Applies the focus to the current element
     */
    focus(): void;
    /**
     * Applies the focus to the host element when the clock retracts
     */
    private focusOnHostElement;
    /**
     * Generates the current view
     */
    private generateTimeColumns;
    /**
     * Returns the next value after a given step in a cycle
     * @param currentValue current value in the cycle
     * @param step value of steps to move
     * @param maxValue max value in the cycle
     */
    private getNextValue;
    /**
     * Returns the previous value after a given step in a cycle
     * @param currentValue current value in the cycle
     * @param step value of steps to move
     * @param maxValue max value in the cycle
     */
    private getPreviousValue;
    /**
     * Generates a series of numbers representing a cyclic window in time given a center (current value) and max value
     */
    private generateTimeWindow;
    static ɵfac: i0.ɵɵFactoryDeclaration<ClockFormFieldComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ClockFormFieldComponent, "sme-form-field[type=\"clock\"]", never, { "showConfirmation": "showConfirmation"; }, { "accepted": "accepted"; "cleared": "cleared"; }, never, never, false, never>;
}