openaire-library/utils/my-date-picker/my-date-picker.component.ts

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import { Component, Input, Output, EventEmitter, OnChanges, SimpleChanges, ElementRef, ViewEncapsulation, ChangeDetectorRef, forwardRef, Renderer2 } from "@angular/core";
import { ControlValueAccessor, NG_VALUE_ACCESSOR } from "@angular/forms";
import { IMyDate, IMyDateRange, IMyMonth, IMyCalendarDay, IMyWeek, IMyDayLabels, IMyMonthLabels, IMyOptions, IMyDateModel, IMyInputAutoFill, IMyInputFieldChanged, IMyCalendarViewChanged, IMyInputFocusBlur } from "./interfaces/index";
import { LocaleService } from "./services/my-date-picker.locale.service";
import { UtilService } from "./services/my-date-picker.util.service";
// webpack1_
declare var require: any;
// declare var myDpStyles: string = require("./my-date-picker.component.css");
// declare var myDpTpl: string = require("./my-date-picker.component.html");
// webpack2_
export const MYDP_VALUE_ACCESSOR: any = {
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef(() => MyDatePicker),
multi: true
};
@Component({
selector: "my-date-picker",
styleUrls: ['my-date-picker.component.css'],
templateUrl: 'my-date-picker.component.html',
providers: [LocaleService, UtilService, MYDP_VALUE_ACCESSOR],
encapsulation: ViewEncapsulation.None
})
export class MyDatePicker implements OnChanges, ControlValueAccessor {
@Input() options: any;
@Input() locale: string;
@Input() defaultMonth: string;
@Input() selDate: string;
@Input() placeholder: string;
@Input() selector: number;
@Output() dateChanged: EventEmitter<IMyDateModel> = new EventEmitter<IMyDateModel>();
@Output() inputFieldChanged: EventEmitter<IMyInputFieldChanged> = new EventEmitter<IMyInputFieldChanged>();
@Output() calendarViewChanged: EventEmitter<IMyCalendarViewChanged> = new EventEmitter<IMyCalendarViewChanged>();
@Output() calendarToggle: EventEmitter<number> = new EventEmitter<number>();
@Output() inputFocusBlur: EventEmitter<IMyInputFocusBlur> = new EventEmitter<IMyInputFocusBlur>();
onChangeCb: (_: any) => void = () => { };
onTouchedCb: () => void = () => { };
showSelector: boolean = false;
visibleMonth: IMyMonth = {monthTxt: "", monthNbr: 0, year: 0};
selectedMonth: IMyMonth = {monthTxt: "", monthNbr: 0, year: 0};
selectedDate: IMyDate = {year: 0, month: 0, day: 0};
weekDays: Array<string> = [];
dates: Array<IMyWeek> = [];
selectionDayTxt: string = "";
invalidDate: boolean = false;
disableTodayBtn: boolean = false;
dayIdx: number = 0;
weekDayOpts: Array<string> = ["su", "mo", "tu", "we", "th", "fr", "sa"];
autoFillOpts: IMyInputAutoFill = {separator: "", formatParts: [], enabled: true};
editMonth: boolean = false;
invalidMonth: boolean = false;
editYear: boolean = false;
invalidYear: boolean = false;
prevMonthDisabled: boolean = false;
nextMonthDisabled: boolean = false;
prevYearDisabled: boolean = false;
nextYearDisabled: boolean = false;
PREV_MONTH: number = 1;
CURR_MONTH: number = 2;
NEXT_MONTH: number = 3;
MIN_YEAR: number = 1000;
MAX_YEAR: number = 9999;
// Default options
opts: IMyOptions = {
dayLabels: <IMyDayLabels> {},
monthLabels: <IMyMonthLabels> {},
dateFormat: <string> "",
showTodayBtn: <boolean> true,
todayBtnTxt: <string> "",
firstDayOfWeek: <string> "",
sunHighlight: <boolean> true,
markCurrentDay: <boolean> true,
disableUntil: <IMyDate> {year: 0, month: 0, day: 0},
disableSince: <IMyDate> {year: 0, month: 0, day: 0},
disableDays: <Array<IMyDate>> [],
enableDays: <Array<IMyDate>> [],
disableDateRange: <IMyDateRange> {begin: <IMyDate> {year: 0, month: 0, day: 0}, end: <IMyDate> {year: 0, month: 0, day: 0}},
disableWeekends: <boolean> false,
showWeekNumbers: <boolean> false,
height: <string> "34px",
width: <string> "100%",
selectionTxtFontSize: <string> "18px",
inline: <boolean> false,
showClearDateBtn: <boolean> true,
alignSelectorRight: <boolean> false,
openSelectorTopOfInput: <boolean> false,
indicateInvalidDate: <boolean> true,
editableDateField: <boolean> true,
editableMonthAndYear: <boolean> true,
disableHeaderButtons: <boolean> true,
minYear: <number> this.MIN_YEAR,
maxYear: <number> this.MAX_YEAR,
componentDisabled: <boolean> false,
inputValueRequired: <boolean> false,
showSelectorArrow: <boolean> true,
showInputField: <boolean> true,
openSelectorOnInputClick: <boolean> false,
inputAutoFill: <boolean> true,
ariaLabelInputField: <string> "Date input field",
ariaLabelClearDate: <string> "Clear Date",
ariaLabelOpenCalendar: <string> "Open Calendar",
ariaLabelPrevMonth: <string> "Previous Month",
ariaLabelNextMonth: <string> "Next Month",
ariaLabelPrevYear: <string> "Previous Year",
ariaLabelNextYear: <string> "Next Year"
};
constructor(public elem: ElementRef, private renderer: Renderer2, private cdr: ChangeDetectorRef, private localeService: LocaleService, private utilService: UtilService) {
this.setLocaleOptions();
renderer.listen("document", "click", (event: any) => {
//renderer.listen("document", "click", (event: any) => {
console.info("listen global");
if (this.showSelector && event.target && this.elem.nativeElement !== event.target && !this.elem.nativeElement.contains(event.target)) {
this.showSelector = false;
this.calendarToggle.emit(4);
}
if (this.opts.editableMonthAndYear && event.target && this.elem.nativeElement.contains(event.target)) {
this.resetMonthYearEdit();
}
});
}
setLocaleOptions(): void {
let opts: IMyOptions = this.localeService.getLocaleOptions(this.locale);
Object.keys(opts).forEach((k) => {
(<IMyOptions>this.opts)[k] = opts[k];
});
}
setOptions(): void {
if (this.options !== undefined) {
Object.keys(this.options).forEach((k) => {
(<IMyOptions>this.opts)[k] = this.options[k];
});
}
if (this.opts.minYear < this.MIN_YEAR) {
this.opts.minYear = this.MIN_YEAR;
}
if (this.opts.maxYear > this.MAX_YEAR) {
this.opts.maxYear = this.MAX_YEAR;
}
let separator: string = this.utilService.getDateFormatSeparator(this.opts.dateFormat);
this.autoFillOpts = {separator: separator, formatParts: this.opts.dateFormat.split(separator), enabled: this.opts.inputAutoFill};
}
getComponentWidth(): string {
if (this.opts.showInputField) {
return this.opts.width;
}
else if (this.selectionDayTxt.length > 0 && this.opts.showClearDateBtn) {
return "60px";
}
else {
return "30px";
}
}
getSelectorTopPosition(): string {
if (this.opts.openSelectorTopOfInput) {
return this.elem.nativeElement.children[0].offsetHeight + "px";
}
}
resetMonthYearEdit(): void {
this.editMonth = false;
this.editYear = false;
this.invalidMonth = false;
this.invalidYear = false;
}
editMonthClicked(event: any): void {
event.stopPropagation();
if (this.opts.editableMonthAndYear) {
this.editMonth = true;
}
}
editYearClicked(event: any): void {
event.stopPropagation();
if (this.opts.editableMonthAndYear) {
this.editYear = true;
}
}
userDateInput(event: any): void {
this.invalidDate = false;
if (event.target.value.length === 0) {
this.clearDate();
}
else {
let date: IMyDate = this.utilService.isDateValid(event.target.value, this.opts.dateFormat, this.opts.minYear, this.opts.maxYear, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.monthLabels, this.opts.enableDays);
if (date.day !== 0 && date.month !== 0 && date.year !== 0) {
this.selectDate(date);
}
else {
this.invalidDate = true;
}
}
if (this.invalidDate) {
this.inputFieldChanged.emit({value: event.target.value, dateFormat: this.opts.dateFormat, valid: !(event.target.value.length === 0 || this.invalidDate)});
this.onChangeCb("");
this.onTouchedCb();
}
}
onFocusInput(event: any): void {
this.inputFocusBlur.emit({reason: 1, value: event.target.value});
}
lostFocusInput(event: any): void {
this.selectionDayTxt = event.target.value;
this.onTouchedCb();
this.inputFocusBlur.emit({reason: 2, value: event.target.value});
}
userMonthInput(event: any): void {
if (event.keyCode === 13 || event.keyCode === 37 || event.keyCode === 39) {
return;
}
this.invalidMonth = false;
let m: number = this.utilService.isMonthLabelValid(event.target.value, this.opts.monthLabels);
if (m !== -1) {
this.editMonth = false;
if (m !== this.visibleMonth.monthNbr) {
this.visibleMonth = {monthTxt: this.monthText(m), monthNbr: m, year: this.visibleMonth.year};
this.generateCalendar(m, this.visibleMonth.year, true);
}
}
else {
this.invalidMonth = true;
}
}
userYearInput(event: any): void {
if (event.keyCode === 13 || event.keyCode === 37 || event.keyCode === 39) {
return;
}
this.invalidYear = false;
let y: number = this.utilService.isYearLabelValid(Number(event.target.value), this.opts.minYear, this.opts.maxYear);
if (y !== -1) {
this.editYear = false;
if (y !== this.visibleMonth.year) {
this.visibleMonth = {monthTxt: this.visibleMonth.monthTxt, monthNbr: this.visibleMonth.monthNbr, year: y};
this.generateCalendar(this.visibleMonth.monthNbr, y, true);
}
}
else {
this.invalidYear = true;
}
}
isTodayDisabled(): void {
this.disableTodayBtn = this.utilService.isDisabledDay(this.getToday(), this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays);
}
parseOptions(): void {
if (this.locale) {
this.setLocaleOptions();
}
this.setOptions();
this.isTodayDisabled();
this.dayIdx = this.weekDayOpts.indexOf(this.opts.firstDayOfWeek);
if (this.dayIdx !== -1) {
let idx: number = this.dayIdx;
for (let i = 0; i < this.weekDayOpts.length; i++) {
this.weekDays.push(this.opts.dayLabels[this.weekDayOpts[idx]]);
idx = this.weekDayOpts[idx] === "sa" ? 0 : idx + 1;
}
}
}
writeValue(value: Object): void {
if (value && value["date"]) {
this.updateDateValue(this.parseSelectedDate(value["date"]), false);
}
else if (value === "") {
this.updateDateValue({year: 0, month: 0, day: 0}, true);
}
}
registerOnChange(fn: any): void {
this.onChangeCb = fn;
}
registerOnTouched(fn: any): void {
this.onTouchedCb = fn;
}
ngOnChanges(changes: SimpleChanges): void {
if (changes.hasOwnProperty("selector") && changes["selector"].currentValue > 0) {
this.openBtnClicked();
}
if (changes.hasOwnProperty("placeholder")) {
this.placeholder = changes["placeholder"].currentValue;
}
if (changes.hasOwnProperty("locale")) {
this.locale = changes["locale"].currentValue;
}
if (changes.hasOwnProperty("options")) {
this.options = changes["options"].currentValue;
}
this.weekDays.length = 0;
this.parseOptions();
if (changes.hasOwnProperty("defaultMonth")) {
let dm: string = changes["defaultMonth"].currentValue;
if (dm !== null && dm !== undefined && dm !== "") {
this.selectedMonth = this.parseSelectedMonth(dm);
}
else {
this.selectedMonth = {monthTxt: "", monthNbr: 0, year: 0};
}
}
if (changes.hasOwnProperty("selDate")) {
let sd: any = changes["selDate"];
if (sd.currentValue !== null && sd.currentValue !== undefined && sd.currentValue !== "" && Object.keys(sd.currentValue).length !== 0) {
this.selectedDate = this.parseSelectedDate(sd.currentValue);
setTimeout(() => {
this.onChangeCb(this.getDateModel(this.selectedDate));
});
}
else {
// Do not clear on init
if (!sd.isFirstChange()) {
this.clearDate();
}
}
}
if (this.opts.inline) {
this.setVisibleMonth();
}
else if (this.showSelector) {
this.generateCalendar(this.visibleMonth.monthNbr, this.visibleMonth.year, false);
}
}
removeBtnClicked(): void {
// Remove date button clicked
this.clearDate();
if (this.showSelector) {
this.calendarToggle.emit(3);
}
this.showSelector = false;
}
openBtnClicked(): void {
// Open selector button clicked
this.showSelector = !this.showSelector;
if (this.showSelector) {
this.setVisibleMonth();
this.calendarToggle.emit(1);
}
else {
this.calendarToggle.emit(3);
}
}
setVisibleMonth(): void {
// Sets visible month of calendar
let y: number = 0, m: number = 0;
if (!this.utilService.isInitializedDate(this.selectedDate)) {
if (this.selectedMonth.year === 0 && this.selectedMonth.monthNbr === 0) {
let today: IMyDate = this.getToday();
y = today.year;
m = today.month;
} else {
y = this.selectedMonth.year;
m = this.selectedMonth.monthNbr;
}
}
else {
y = this.selectedDate.year;
m = this.selectedDate.month;
}
this.visibleMonth = {monthTxt: this.opts.monthLabels[m], monthNbr: m, year: y};
// Create current month
this.generateCalendar(m, y, true);
}
prevMonth(): void {
// Previous month from calendar
let d: Date = this.getDate(this.visibleMonth.year, this.visibleMonth.monthNbr, 1);
d.setMonth(d.getMonth() - 1);
let y: number = d.getFullYear();
let m: number = d.getMonth() + 1;
this.visibleMonth = {monthTxt: this.monthText(m), monthNbr: m, year: y};
this.generateCalendar(m, y, true);
}
nextMonth(): void {
// Next month from calendar
let d: Date = this.getDate(this.visibleMonth.year, this.visibleMonth.monthNbr, 1);
d.setMonth(d.getMonth() + 1);
let y: number = d.getFullYear();
let m: number = d.getMonth() + 1;
this.visibleMonth = {monthTxt: this.monthText(m), monthNbr: m, year: y};
this.generateCalendar(m, y, true);
}
prevYear(): void {
// Previous year from calendar
this.visibleMonth.year--;
this.generateCalendar(this.visibleMonth.monthNbr, this.visibleMonth.year, true);
}
nextYear(): void {
// Next year from calendar
this.visibleMonth.year++;
this.generateCalendar(this.visibleMonth.monthNbr, this.visibleMonth.year, true);
}
todayClicked(): void {
// Today button clicked
let today: IMyDate = this.getToday();
this.selectDate(today);
if (this.opts.inline && today.year !== this.visibleMonth.year || today.month !== this.visibleMonth.monthNbr) {
this.visibleMonth = {monthTxt: this.opts.monthLabels[today.month], monthNbr: today.month, year: today.year};
this.generateCalendar(today.month, today.year, true);
}
}
cellClicked(cell: any): void {
// Cell clicked on the calendar
if (cell.cmo === this.PREV_MONTH) {
// Previous month day
this.prevMonth();
}
else if (cell.cmo === this.CURR_MONTH) {
// Current month day - if date is already selected clear it
if (cell.dateObj.year === this.selectedDate.year && cell.dateObj.month === this.selectedDate.month && cell.dateObj.day === this.selectedDate.day) {
this.clearDate();
}
else {
this.selectDate(cell.dateObj);
}
}
else if (cell.cmo === this.NEXT_MONTH) {
// Next month day
this.nextMonth();
}
this.resetMonthYearEdit();
}
cellKeyDown(event: any, cell: any) {
// Cell keyboard handling
if ((event.keyCode === 13 || event.keyCode === 32) && !cell.disabled) {
event.preventDefault();
this.cellClicked(cell);
}
}
clearDate(): void {
// Clears the date and notifies parent using callbacks and value accessor
let date: IMyDate = {year: 0, month: 0, day: 0};
this.dateChanged.emit({date: date, jsdate: null, formatted: "", epoc: 0});
this.onChangeCb("");
this.onTouchedCb();
this.updateDateValue(date, true);
}
selectDate(date: IMyDate): void {
// Date selected, notifies parent using callbacks and value accessor
let dateModel: IMyDateModel = this.getDateModel(date);
this.dateChanged.emit(dateModel);
this.onChangeCb(dateModel);
this.onTouchedCb();
this.updateDateValue(date, false);
if (this.showSelector) {
this.calendarToggle.emit(2);
}
this.showSelector = false;
}
updateDateValue(date: IMyDate, clear: boolean): void {
// Updates date values
this.selectedDate = date;
this.selectionDayTxt = clear ? "" : this.formatDate(date);
this.inputFieldChanged.emit({value: this.selectionDayTxt, dateFormat: this.opts.dateFormat, valid: !clear});
this.invalidDate = false;
}
getDateModel(date: IMyDate): IMyDateModel {
// Creates a date model object from the given parameter
return {date: date, jsdate: this.getDate(date.year, date.month, date.day), formatted: this.formatDate(date), epoc: Math.round(this.getTimeInMilliseconds(date) / 1000.0)};
}
preZero(val: string): string {
// Prepend zero if smaller than 10
return parseInt(val) < 10 ? "0" + val : val;
}
formatDate(val: any): string {
// Returns formatted date string, if mmm is part of dateFormat returns month as a string
let formatted: string = this.opts.dateFormat.replace("yyyy", val.year).replace("dd", this.preZero(val.day));
return this.opts.dateFormat.indexOf("mmm") !== -1 ? formatted.replace("mmm", this.monthText(val.month)) : formatted.replace("mm", this.preZero(val.month));
}
monthText(m: number): string {
// Returns month as a text
return this.opts.monthLabels[m];
}
monthStartIdx(y: number, m: number): number {
// Month start index
let d = new Date();
d.setDate(1);
d.setMonth(m - 1);
d.setFullYear(y);
let idx = d.getDay() + this.sundayIdx();
return idx >= 7 ? idx - 7 : idx;
}
daysInMonth(m: number, y: number): number {
// Return number of days of current month
return new Date(y, m, 0).getDate();
}
daysInPrevMonth(m: number, y: number): number {
// Return number of days of the previous month
let d: Date = this.getDate(y, m, 1);
d.setMonth(d.getMonth() - 1);
return this.daysInMonth(d.getMonth() + 1, d.getFullYear());
}
isCurrDay(d: number, m: number, y: number, cmo: number, today: IMyDate): boolean {
// Check is a given date the today
return d === today.day && m === today.month && y === today.year && cmo === this.CURR_MONTH;
}
getToday(): IMyDate {
let date: Date = new Date();
return {year: date.getFullYear(), month: date.getMonth() + 1, day: date.getDate()};
}
getTimeInMilliseconds(date: IMyDate): number {
return this.getDate(date.year, date.month, date.day).getTime();
}
getDayNumber(date: IMyDate): number {
// Get day number: su=0, mo=1, tu=2, we=3 ...
let d: Date = this.getDate(date.year, date.month, date.day);
return d.getDay();
}
getWeekday(date: IMyDate): string {
// Get weekday: su, mo, tu, we ...
return this.weekDayOpts[this.getDayNumber(date)];
}
getDate(year: number, month: number, day: number): Date {
// Creates a date object from given year, month and day
return new Date(year, month - 1, day, 0, 0, 0, 0);
}
sundayIdx(): number {
// Index of Sunday day
return this.dayIdx > 0 ? 7 - this.dayIdx : 0;
}
generateCalendar(m: number, y: number, notifyChange: boolean): void {
this.dates.length = 0;
let today: IMyDate = this.getToday();
let monthStart: number = this.monthStartIdx(y, m);
let dInThisM: number = this.daysInMonth(m, y);
let dInPrevM: number = this.daysInPrevMonth(m, y);
let dayNbr: number = 1;
let cmo: number = this.PREV_MONTH;
for (let i = 1; i < 7; i++) {
let week: Array<IMyCalendarDay> = [];
if (i === 1) {
// First week
let pm = dInPrevM - monthStart + 1;
// Previous month
for (let j = pm; j <= dInPrevM; j++) {
let date: IMyDate = {year: y, month: m - 1, day: j};
week.push({dateObj: date, cmo: cmo, currDay: this.isCurrDay(j, m, y, cmo, today), dayNbr: this.getDayNumber(date), disabled: this.utilService.isDisabledDay(date, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays)});
}
cmo = this.CURR_MONTH;
// Current month
let daysLeft: number = 7 - week.length;
for (let j = 0; j < daysLeft; j++) {
let date: IMyDate = {year: y, month: m, day: dayNbr};
week.push({dateObj: date, cmo: cmo, currDay: this.isCurrDay(dayNbr, m, y, cmo, today), dayNbr: this.getDayNumber(date), disabled: this.utilService.isDisabledDay(date, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays)});
dayNbr++;
}
}
else {
// Rest of the weeks
for (let j = 1; j < 8; j++) {
if (dayNbr > dInThisM) {
// Next month
dayNbr = 1;
cmo = this.NEXT_MONTH;
}
let date: IMyDate = {year: y, month: cmo === this.CURR_MONTH ? m : m + 1, day: dayNbr};
week.push({dateObj: date, cmo: cmo, currDay: this.isCurrDay(dayNbr, m, y, cmo, today), dayNbr: this.getDayNumber(date), disabled: this.utilService.isDisabledDay(date, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays)});
dayNbr++;
}
}
let weekNbr: number = this.opts.showWeekNumbers && this.opts.firstDayOfWeek === "mo" ? this.utilService.getWeekNumber(week[0].dateObj) : 0;
this.dates.push({week: week, weekNbr: weekNbr});
}
this.setHeaderBtnDisabledState(m, y);
if (notifyChange) {
// Notify parent
this.calendarViewChanged.emit({year: y, month: m, first: {number: 1, weekday: this.getWeekday({year: y, month: m, day: 1})}, last: {number: dInThisM, weekday: this.getWeekday({year: y, month: m, day: dInThisM})}});
}
}
parseSelectedDate(selDate: any): IMyDate {
// Parse selDate value - it can be string or IMyDate object
let date: IMyDate = {day: 0, month: 0, year: 0};
if (typeof selDate === "string") {
let sd: string = <string>selDate;
date.day = this.utilService.parseDatePartNumber(this.opts.dateFormat, sd, "dd");
date.month = this.opts.dateFormat.indexOf("mmm") !== -1
? this.utilService.parseDatePartMonthName(this.opts.dateFormat, sd, "mmm", this.opts.monthLabels)
: this.utilService.parseDatePartNumber(this.opts.dateFormat, sd, "mm");
date.year = this.utilService.parseDatePartNumber(this.opts.dateFormat, sd, "yyyy");
}
else if (typeof selDate === "object") {
date = selDate;
}
this.selectionDayTxt = this.formatDate(date);
return date;
}
parseSelectedMonth(ms: string): IMyMonth {
return this.utilService.parseDefaultMonth(ms);
}
setHeaderBtnDisabledState(m: number, y: number): void {
let dpm: boolean = false;
let dpy: boolean = false;
let dnm: boolean = false;
let dny: boolean = false;
if (this.opts.disableHeaderButtons) {
dpm = this.utilService.isMonthDisabledByDisableUntil({year: m === 1 ? y - 1 : y, month: m === 1 ? 12 : m - 1, day: this.daysInMonth(m === 1 ? 12 : m - 1, m === 1 ? y - 1 : y)}, this.opts.disableUntil);
dpy = this.utilService.isMonthDisabledByDisableUntil({year: y - 1, month: m, day: this.daysInMonth(m, y - 1)}, this.opts.disableUntil);
dnm = this.utilService.isMonthDisabledByDisableSince({year: m === 12 ? y + 1 : y, month: m === 12 ? 1 : m + 1, day: 1}, this.opts.disableSince);
dny = this.utilService.isMonthDisabledByDisableSince({year: y + 1, month: m, day: 1}, this.opts.disableSince);
}
this.prevMonthDisabled = m === 1 && y === this.opts.minYear || dpm;
this.prevYearDisabled = y - 1 < this.opts.minYear || dpy;
this.nextMonthDisabled = m === 12 && y === this.opts.maxYear || dnm;
this.nextYearDisabled = y + 1 > this.opts.maxYear || dny;
}
}