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pikaday.js
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pikaday.js
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/*!
* Pikaday
*
* Copyright © 2014 David Bushell | BSD & MIT license | https://github.com/Pikaday/Pikaday
*/
(function (root, factory)
{
'use strict';
var moment;
if (typeof exports === 'object') {
// CommonJS module
// Load moment.js as an optional dependency
try { moment = require('moment'); } catch (e) {}
module.exports = factory(moment);
} else if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(function (req)
{
// Load moment.js as an optional dependency
var id = 'moment';
try { moment = req(id); } catch (e) {}
return factory(moment);
});
} else {
root.Pikaday = factory(root.moment);
}
}(this, function (moment)
{
'use strict';
/**
* feature detection and helper functions
*/
var hasMoment = typeof moment === 'function',
hasEventListeners = !!window.addEventListener,
document = window.document,
sto = window.setTimeout,
addEvent = function(el, e, callback, capture)
{
if (hasEventListeners) {
el.addEventListener(e, callback, !!capture);
} else {
el.attachEvent('on' + e, callback);
}
},
removeEvent = function(el, e, callback, capture)
{
if (hasEventListeners) {
el.removeEventListener(e, callback, !!capture);
} else {
el.detachEvent('on' + e, callback);
}
},
trim = function(str)
{
return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g,'');
},
hasClass = function(el, cn)
{
return (' ' + el.className + ' ').indexOf(' ' + cn + ' ') !== -1;
},
addClass = function(el, cn)
{
if (!hasClass(el, cn)) {
el.className = (el.className === '') ? cn : el.className + ' ' + cn;
}
},
removeClass = function(el, cn)
{
el.className = trim((' ' + el.className + ' ').replace(' ' + cn + ' ', ' '));
},
isArray = function(obj)
{
return (/Array/).test(Object.prototype.toString.call(obj));
},
isDate = function(obj)
{
return (/Date/).test(Object.prototype.toString.call(obj)) && !isNaN(obj.getTime());
},
isWeekend = function(date)
{
var day = date.getDay();
return day === 0 || day === 6;
},
isLeapYear = function(year)
{
// solution lifted from date.js (MIT license): https://github.com/datejs/Datejs
return ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
},
getDaysInMonth = function(year, month)
{
return [31, isLeapYear(year) ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
},
setToStartOfDay = function(date)
{
if (isDate(date)) date.setHours(0,0,0,0);
},
compareDates = function(a,b)
{
// weak date comparison (use setToStartOfDay(date) to ensure correct result)
return a.getTime() === b.getTime();
},
extend = function(to, from, overwrite)
{
var prop, hasProp;
for (prop in from) {
hasProp = to[prop] !== undefined;
if (hasProp && typeof from[prop] === 'object' && from[prop] !== null && from[prop].nodeName === undefined) {
if (isDate(from[prop])) {
if (overwrite) {
to[prop] = new Date(from[prop].getTime());
}
}
else if (isArray(from[prop])) {
if (overwrite) {
to[prop] = from[prop].slice(0);
}
} else {
to[prop] = extend({}, from[prop], overwrite);
}
} else if (overwrite || !hasProp) {
to[prop] = from[prop];
}
}
return to;
},
fireEvent = function(el, eventName, data)
{
var ev;
if (document.createEvent) {
ev = document.createEvent('HTMLEvents');
ev.initEvent(eventName, true, false);
ev = extend(ev, data);
el.dispatchEvent(ev);
} else if (document.createEventObject) {
ev = document.createEventObject();
ev = extend(ev, data);
el.fireEvent('on' + eventName, ev);
}
},
adjustCalendar = function(calendar) {
if (calendar.month < 0) {
calendar.year -= Math.ceil(Math.abs(calendar.month)/12);
calendar.month += 12;
}
if (calendar.month > 11) {
calendar.year += Math.floor(Math.abs(calendar.month)/12);
calendar.month -= 12;
}
return calendar;
},
/**
* defaults and localisation
*/
defaults = {
// bind the picker to a form field
field: null,
// automatically show/hide the picker on `field` focus (default `true` if `field` is set)
bound: undefined,
// data-attribute on the input field with an aria assistance text (only applied when `bound` is set)
ariaLabel: 'Use the arrow keys to pick a date',
// position of the datepicker, relative to the field (default to bottom & left)
// ('bottom' & 'left' keywords are not used, 'top' & 'right' are modifier on the bottom/left position)
position: 'bottom left',
// automatically fit in the viewport even if it means repositioning from the position option
reposition: true,
// the default output format for `.toString()` and `field` value
format: 'YYYY-MM-DD',
// the toString function which gets passed a current date object and format
// and returns a string
toString: null,
// used to create date object from current input string
parse: null,
// the initial date to view when first opened
defaultDate: null,
// make the `defaultDate` the initial selected value
setDefaultDate: false,
// first day of week (0: Sunday, 1: Monday etc)
firstDay: 0,
// minimum number of days in the week that gets week number one
// default ISO 8601, week 01 is the week with the first Thursday (4)
firstWeekOfYearMinDays: 4,
// the default flag for moment's strict date parsing
formatStrict: false,
// the minimum/earliest date that can be selected
minDate: null,
// the maximum/latest date that can be selected
maxDate: null,
// number of years either side, or array of upper/lower range
yearRange: 10,
// show week numbers at head of row
showWeekNumber: false,
// Week picker mode
pickWholeWeek: false,
// used internally (don't config outside)
minYear: 0,
maxYear: 9999,
minMonth: undefined,
maxMonth: undefined,
startRange: null,
endRange: null,
isRTL: false,
// Additional text to append to the year in the calendar title
yearSuffix: '',
// Render the month after year in the calendar title
showMonthAfterYear: false,
// Render days of the calendar grid that fall in the next or previous month
showDaysInNextAndPreviousMonths: false,
// Allows user to select days that fall in the next or previous month
enableSelectionDaysInNextAndPreviousMonths: false,
// how many months are visible
numberOfMonths: 1,
// when numberOfMonths is used, this will help you to choose where the main calendar will be (default `left`, can be set to `right`)
// only used for the first display or when a selected date is not visible
mainCalendar: 'left',
// Specify a DOM element to render the calendar in
container: undefined,
// Blur field when date is selected
blurFieldOnSelect : true,
// internationalization
i18n: {
previousMonth : 'Previous Month',
nextMonth : 'Next Month',
months : ['January','February','March','April','May','June','July','August','September','October','November','December'],
weekdays : ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
weekdaysShort : ['Sun','Mon','Tue','Wed','Thu','Fri','Sat']
},
// Theme Classname
theme: null,
// events array
events: [],
// callback function
onSelect: null,
onOpen: null,
onClose: null,
onDraw: null,
// Enable keyboard input
keyboardInput: true
},
/**
* templating functions to abstract HTML rendering
*/
renderDayName = function(opts, day, abbr)
{
day += opts.firstDay;
while (day >= 7) {
day -= 7;
}
return abbr ? opts.i18n.weekdaysShort[day] : opts.i18n.weekdays[day];
},
renderDay = function(opts)
{
var arr = [];
var ariaSelected = 'false';
if (opts.isEmpty) {
if (opts.showDaysInNextAndPreviousMonths) {
arr.push('is-outside-current-month');
if(!opts.enableSelectionDaysInNextAndPreviousMonths) {
arr.push('is-selection-disabled');
}
} else {
return '<td class="is-empty"></td>';
}
}
if (opts.isDisabled) {
arr.push('is-disabled');
}
if (opts.isToday) {
arr.push('is-today');
}
if (opts.isSelected) {
arr.push('is-selected');
ariaSelected = 'true';
}
if (opts.hasEvent) {
arr.push('has-event');
}
if (opts.isInRange) {
arr.push('is-inrange');
}
if (opts.isStartRange) {
arr.push('is-startrange');
}
if (opts.isEndRange) {
arr.push('is-endrange');
}
return '<td data-day="' + opts.day + '" class="' + arr.join(' ') + '" aria-selected="' + ariaSelected + '">' +
'<button class="pika-button pika-day" type="button" ' +
'data-pika-year="' + opts.year + '" data-pika-month="' + opts.month + '" data-pika-day="' + opts.day + '">' +
opts.day +
'</button>' +
'</td>';
},
isoWeek = function(date, firstWeekOfYearMinDays) {
// Ensure we're at the start of the day.
date.setHours(0, 0, 0, 0);
// Thursday in current week decides the year because January 4th
// is always in the first week according to ISO8601.
var yearDay = date.getDate(),
weekDay = date.getDay(),
dayInFirstWeek = firstWeekOfYearMinDays,
dayShift = dayInFirstWeek - 1, // counting starts at 0
daysPerWeek = 7,
prevWeekDay = function(day) { return (day + daysPerWeek - 1) % daysPerWeek; };
// Adjust to Thursday in week 1 and count number of weeks from date to week 1.
date.setDate(yearDay + dayShift - prevWeekDay(weekDay));
var jan4th = new Date(date.getFullYear(), 0, dayInFirstWeek),
msPerDay = 24 * 60 * 60 * 1000,
daysBetween = (date.getTime() - jan4th.getTime()) / msPerDay,
weekNum = 1 + Math.round((daysBetween - dayShift + prevWeekDay(jan4th.getDay())) / daysPerWeek);
return weekNum;
},
renderWeek = function (d, m, y, firstWeekOfYearMinDays) {
var date = new Date(y, m, d),
week = hasMoment ? moment(date).isoWeek() : isoWeek(date, firstWeekOfYearMinDays);
return '<td class="pika-week">' + week + '</td>';
},
renderRow = function(days, isRTL, pickWholeWeek, isRowSelected)
{
return '<tr class="pika-row' + (pickWholeWeek ? ' pick-whole-week' : '') + (isRowSelected ? ' is-selected' : '') + '">' + (isRTL ? days.reverse() : days).join('') + '</tr>';
},
renderBody = function(rows)
{
return '<tbody>' + rows.join('') + '</tbody>';
},
renderHead = function(opts)
{
var i, arr = [];
if (opts.showWeekNumber) {
arr.push('<th></th>');
}
for (i = 0; i < 7; i++) {
arr.push('<th scope="col"><abbr title="' + renderDayName(opts, i) + '">' + renderDayName(opts, i, true) + '</abbr></th>');
}
return '<thead><tr>' + (opts.isRTL ? arr.reverse() : arr).join('') + '</tr></thead>';
},
renderTitle = function(instance, c, year, month, refYear, randId)
{
var i, j, arr,
opts = instance._o,
isMinYear = year === opts.minYear,
isMaxYear = year === opts.maxYear,
html = '<div id="' + randId + '" class="pika-title" role="heading" aria-live="assertive">',
monthHtml,
yearHtml,
prev = true,
next = true;
for (arr = [], i = 0; i < 12; i++) {
arr.push('<option value="' + (year === refYear ? i - c : 12 + i - c) + '"' +
(i === month ? ' selected="selected"': '') +
((isMinYear && i < opts.minMonth) || (isMaxYear && i > opts.maxMonth) ? ' disabled="disabled"' : '') + '>' +
opts.i18n.months[i] + '</option>');
}
monthHtml = '<div class="pika-label">' + opts.i18n.months[month] + '<select class="pika-select pika-select-month" tabindex="-1">' + arr.join('') + '</select></div>';
if (isArray(opts.yearRange)) {
i = opts.yearRange[0];
j = opts.yearRange[1] + 1;
} else {
i = year - opts.yearRange;
j = 1 + year + opts.yearRange;
}
for (arr = []; i < j && i <= opts.maxYear; i++) {
if (i >= opts.minYear) {
arr.push('<option value="' + i + '"' + (i === year ? ' selected="selected"': '') + '>' + (i) + '</option>');
}
}
yearHtml = '<div class="pika-label">' + year + opts.yearSuffix + '<select class="pika-select pika-select-year" tabindex="-1">' + arr.join('') + '</select></div>';
if (opts.showMonthAfterYear) {
html += yearHtml + monthHtml;
} else {
html += monthHtml + yearHtml;
}
if (isMinYear && (month === 0 || opts.minMonth >= month)) {
prev = false;
}
if (isMaxYear && (month === 11 || opts.maxMonth <= month)) {
next = false;
}
if (c === 0) {
html += '<button class="pika-prev' + (prev ? '' : ' is-disabled') + '" type="button">' + opts.i18n.previousMonth + '</button>';
}
if (c === (instance._o.numberOfMonths - 1) ) {
html += '<button class="pika-next' + (next ? '' : ' is-disabled') + '" type="button">' + opts.i18n.nextMonth + '</button>';
}
return html += '</div>';
},
renderTable = function(opts, data, randId)
{
return '<table cellpadding="0" cellspacing="0" class="pika-table" role="grid" aria-labelledby="' + randId + '">' + renderHead(opts) + renderBody(data) + '</table>';
},
/**
* Pikaday constructor
*/
Pikaday = function(options)
{
var self = this,
opts = self.config(options);
self._onMouseDown = function(e)
{
if (!self._v) {
return;
}
e = e || window.event;
var target = e.target || e.srcElement;
if (!target) {
return;
}
if (!hasClass(target, 'is-disabled')) {
if (hasClass(target, 'pika-button') && !hasClass(target, 'is-empty') && !hasClass(target.parentNode, 'is-disabled')) {
self.setDate(new Date(target.getAttribute('data-pika-year'), target.getAttribute('data-pika-month'), target.getAttribute('data-pika-day')));
if (opts.bound) {
sto(function() {
self.hide();
if (opts.blurFieldOnSelect && opts.field) {
opts.field.blur();
}
}, 100);
}
}
else if (hasClass(target, 'pika-prev')) {
self.prevMonth();
}
else if (hasClass(target, 'pika-next')) {
self.nextMonth();
}
}
if (!hasClass(target, 'pika-select')) {
// if this is touch event prevent mouse events emulation
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
return false;
}
} else {
self._c = true;
}
};
self._onChange = function(e)
{
e = e || window.event;
var target = e.target || e.srcElement;
if (!target) {
return;
}
if (hasClass(target, 'pika-select-month')) {
self.gotoMonth(target.value);
}
else if (hasClass(target, 'pika-select-year')) {
self.gotoYear(target.value);
}
};
self._onKeyChange = function(e)
{
e = e || window.event;
if (self.isVisible()) {
switch(e.keyCode){
case 13:
case 27:
if (opts.field) {
opts.field.blur();
}
break;
case 37:
self.adjustDate('subtract', 1);
break;
case 38:
self.adjustDate('subtract', 7);
break;
case 39:
self.adjustDate('add', 1);
break;
case 40:
self.adjustDate('add', 7);
break;
case 8:
case 46:
self.setDate(null);
break;
}
}
};
self._parseFieldValue = function()
{
if (opts.parse) {
return opts.parse(opts.field.value, opts.format);
} else if (hasMoment) {
var date = moment(opts.field.value, opts.format, opts.formatStrict);
return (date && date.isValid()) ? date.toDate() : null;
} else {
return new Date(Date.parse(opts.field.value));
}
};
self._onInputChange = function(e)
{
var date;
if (e.firedBy === self) {
return;
}
date = self._parseFieldValue();
if (isDate(date)) {
self.setDate(date);
}
if (!self._v) {
self.show();
}
};
self._onInputFocus = function()
{
self.show();
};
self._onInputClick = function()
{
self.show();
};
self._onInputBlur = function()
{
// IE allows pika div to gain focus; catch blur the input field
var pEl = document.activeElement;
do {
if (hasClass(pEl, 'pika-single')) {
return;
}
}
while ((pEl = pEl.parentNode));
if (!self._c) {
self._b = sto(function() {
self.hide();
}, 50);
}
self._c = false;
};
self._onClick = function(e)
{
e = e || window.event;
var target = e.target || e.srcElement,
pEl = target;
if (!target) {
return;
}
if (!hasEventListeners && hasClass(target, 'pika-select')) {
if (!target.onchange) {
target.setAttribute('onchange', 'return;');
addEvent(target, 'change', self._onChange);
}
}
do {
if (hasClass(pEl, 'pika-single') || pEl === opts.trigger) {
return;
}
}
while ((pEl = pEl.parentNode));
if (self._v && target !== opts.trigger && pEl !== opts.trigger) {
self.hide();
}
};
self.el = document.createElement('div');
self.el.className = 'pika-single' + (opts.isRTL ? ' is-rtl' : '') + (opts.theme ? ' ' + opts.theme : '');
addEvent(self.el, 'mousedown', self._onMouseDown, true);
addEvent(self.el, 'touchend', self._onMouseDown, true);
addEvent(self.el, 'change', self._onChange);
if (opts.keyboardInput) {
addEvent(document, 'keydown', self._onKeyChange);
}
if (opts.field) {
if (opts.container) {
opts.container.appendChild(self.el);
} else if (opts.bound) {
document.body.appendChild(self.el);
} else {
opts.field.parentNode.insertBefore(self.el, opts.field.nextSibling);
}
addEvent(opts.field, 'change', self._onInputChange);
if (!opts.defaultDate) {
opts.defaultDate = self._parseFieldValue();
opts.setDefaultDate = true;
}
}
var defDate = opts.defaultDate;
if (isDate(defDate)) {
if (opts.setDefaultDate) {
self.setDate(defDate, true);
} else {
self.gotoDate(defDate);
}
} else {
self.gotoDate(new Date());
}
if (opts.bound) {
this.hide();
self.el.className += ' is-bound';
addEvent(opts.trigger, 'click', self._onInputClick);
addEvent(opts.trigger, 'focus', self._onInputFocus);
addEvent(opts.trigger, 'blur', self._onInputBlur);
} else {
this.show();
}
};
/**
* public Pikaday API
*/
Pikaday.prototype = {
/**
* configure functionality
*/
config: function(options)
{
if (!this._o) {
this._o = extend({}, defaults, true);
}
var opts = extend(this._o, options, true);
opts.isRTL = !!opts.isRTL;
opts.field = (opts.field && opts.field.nodeName) ? opts.field : null;
opts.theme = (typeof opts.theme) === 'string' && opts.theme ? opts.theme : null;
opts.bound = !!(opts.bound !== undefined ? opts.field && opts.bound : opts.field);
opts.trigger = (opts.trigger && opts.trigger.nodeName) ? opts.trigger : opts.field;
opts.disableWeekends = !!opts.disableWeekends;
opts.disableDayFn = (typeof opts.disableDayFn) === 'function' ? opts.disableDayFn : null;
var nom = parseInt(opts.numberOfMonths, 10) || 1;
opts.numberOfMonths = nom > 4 ? 4 : nom;
if (!isDate(opts.minDate)) {
opts.minDate = false;
}
if (!isDate(opts.maxDate)) {
opts.maxDate = false;
}
if ((opts.minDate && opts.maxDate) && opts.maxDate < opts.minDate) {
opts.maxDate = opts.minDate = false;
}
if (opts.minDate) {
this.setMinDate(opts.minDate);
}
if (opts.maxDate) {
this.setMaxDate(opts.maxDate);
}
if (isArray(opts.yearRange)) {
var fallback = new Date().getFullYear() - 10;
opts.yearRange[0] = parseInt(opts.yearRange[0], 10) || fallback;
opts.yearRange[1] = parseInt(opts.yearRange[1], 10) || fallback;
} else {
opts.yearRange = Math.abs(parseInt(opts.yearRange, 10)) || defaults.yearRange;
if (opts.yearRange > 100) {
opts.yearRange = 100;
}
}
return opts;
},
/**
* return a formatted string of the current selection (using Moment.js if available)
*/
toString: function(format)
{
format = format || this._o.format;
if (!isDate(this._d)) {
return '';
}
if (this._o.toString) {
return this._o.toString(this._d, format);
}
if (hasMoment) {
return moment(this._d).format(format);
}
return this._d.toDateString();
},
/**
* return a Moment.js object of the current selection (if available)
*/
getMoment: function()
{
return hasMoment ? moment(this._d) : null;
},
/**
* set the current selection from a Moment.js object (if available)
*/
setMoment: function(date, preventOnSelect)
{
if (hasMoment && moment.isMoment(date)) {
this.setDate(date.toDate(), preventOnSelect);
}
},
/**
* return a Date object of the current selection
*/
getDate: function()
{
return isDate(this._d) ? new Date(this._d.getTime()) : null;
},
/**
* set the current selection
*/
setDate: function(date, preventOnSelect)
{
if (!date) {
this._d = null;
if (this._o.field) {
this._o.field.value = '';
fireEvent(this._o.field, 'change', { firedBy: this });
}
return this.draw();
}
if (typeof date === 'string') {
date = new Date(Date.parse(date));
}
if (!isDate(date)) {
return;
}
var min = this._o.minDate,
max = this._o.maxDate;
if (isDate(min) && date < min) {
date = min;
} else if (isDate(max) && date > max) {
date = max;
}
this._d = new Date(date.getTime());
setToStartOfDay(this._d);
this.gotoDate(this._d);
if (this._o.field) {
this._o.field.value = this.toString();
fireEvent(this._o.field, 'change', { firedBy: this });
}
if (!preventOnSelect && typeof this._o.onSelect === 'function') {
this._o.onSelect.call(this, this.getDate());
}
},
/**
* clear and reset the date
*/
clear: function()
{
this.setDate(null);
},
/**
* change view to a specific date
*/
gotoDate: function(date)
{
var newCalendar = true;
if (!isDate(date)) {
return;
}
if (this.calendars) {
var firstVisibleDate = new Date(this.calendars[0].year, this.calendars[0].month, 1),
lastVisibleDate = new Date(this.calendars[this.calendars.length-1].year, this.calendars[this.calendars.length-1].month, 1),
visibleDate = date.getTime();
// get the end of the month
lastVisibleDate.setMonth(lastVisibleDate.getMonth()+1);
lastVisibleDate.setDate(lastVisibleDate.getDate()-1);
newCalendar = (visibleDate < firstVisibleDate.getTime() || lastVisibleDate.getTime() < visibleDate);
}
if (newCalendar) {
this.calendars = [{
month: date.getMonth(),
year: date.getFullYear()
}];
if (this._o.mainCalendar === 'right') {
this.calendars[0].month += 1 - this._o.numberOfMonths;
}
}
this.adjustCalendars();
},
adjustDate: function(sign, days) {
var day = this.getDate() || new Date();
var difference = parseInt(days)*24*60*60*1000;
var newDay;
if (sign === 'add') {
newDay = new Date(day.valueOf() + difference);
} else if (sign === 'subtract') {
newDay = new Date(day.valueOf() - difference);
}
this.setDate(newDay);
},
adjustCalendars: function() {
this.calendars[0] = adjustCalendar(this.calendars[0]);
for (var c = 1; c < this._o.numberOfMonths; c++) {
this.calendars[c] = adjustCalendar({
month: this.calendars[0].month + c,
year: this.calendars[0].year
});
}
this.draw();
},
gotoToday: function()
{
this.gotoDate(new Date());
},
/**
* change view to a specific month (zero-index, e.g. 0: January)
*/
gotoMonth: function(month)
{
if (!isNaN(month)) {
this.calendars[0].month = parseInt(month, 10);
this.adjustCalendars();
}
},
nextMonth: function()
{
this.calendars[0].month++;
this.adjustCalendars();
},
prevMonth: function()
{
this.calendars[0].month--;
this.adjustCalendars();
},
/**
* change view to a specific full year (e.g. "2012")
*/
gotoYear: function(year)
{
if (!isNaN(year)) {
this.calendars[0].year = parseInt(year, 10);
this.adjustCalendars();
}
},
/**
* change the minDate
*/
setMinDate: function(value)
{
if(value instanceof Date) {
setToStartOfDay(value);
this._o.minDate = value;
this._o.minYear = value.getFullYear();
this._o.minMonth = value.getMonth();
} else {
this._o.minDate = defaults.minDate;
this._o.minYear = defaults.minYear;
this._o.minMonth = defaults.minMonth;
this._o.startRange = defaults.startRange;
}
this.draw();
},
/**
* change the maxDate
*/
setMaxDate: function(value)
{
if(value instanceof Date) {
setToStartOfDay(value);
this._o.maxDate = value;
this._o.maxYear = value.getFullYear();
this._o.maxMonth = value.getMonth();
} else {
this._o.maxDate = defaults.maxDate;
this._o.maxYear = defaults.maxYear;
this._o.maxMonth = defaults.maxMonth;