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bootstrap-datepicker.js
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/* =========================================================
* bootstrap-datepicker.js
* http://www.eyecon.ro/bootstrap-datepicker
* =========================================================
* Copyright 2012 Stefan Petre
* Improvements by Andrew Rowls
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ========================================================= */
(function( $ ) {
var $window = $(window);
function UTCDate(){
return new Date(Date.UTC.apply(Date, arguments));
}
function UTCToday(){
var today = new Date();
return UTCDate(today.getUTCFullYear(), today.getUTCMonth(), today.getUTCDate());
}
// Picker object
var Datepicker = function(element, options) {
var that = this;
this._process_options(options);
this.element = $(element);
this.isInline = false;
this.isInput = this.element.is('input');
this.component = this.element.is('.date') ? this.element.find('.add-on, .btn') : false;
this.hasInput = this.component && this.element.find('input').length;
if(this.component && this.component.length === 0)
this.component = false;
this.picker = $(DPGlobal.template);
this._buildEvents();
this._attachEvents();
if(this.isInline) {
this.picker.addClass('datepicker-inline').appendTo(this.element);
} else {
this.picker.addClass('datepicker-dropdown dropdown-menu');
}
if (this.o.rtl){
this.picker.addClass('datepicker-rtl');
this.picker.find('.prev i, .next i')
.toggleClass('icon-arrow-left icon-arrow-right');
}
this.viewMode = this.o.startView;
if (this.o.calendarWeeks)
this.picker.find('tfoot th.today')
.attr('colspan', function(i, val){
return parseInt(val) + 1;
});
this._allow_update = false;
this.setStartDate(this._o.startDate);
this.setEndDate(this._o.endDate);
this.setDaysOfWeekDisabled(this.o.daysOfWeekDisabled);
this.fillDow();
this.fillMonths();
this._allow_update = true;
this.update();
this.showMode();
if(this.isInline) {
this.show();
}
};
Datepicker.prototype = {
constructor: Datepicker,
_process_options: function(opts){
// Store raw options for reference
this._o = $.extend({}, this._o, opts);
// Processed options
var o = this.o = $.extend({}, this._o);
// Check if "de-DE" style date is available, if not language should
// fallback to 2 letter code eg "de"
var lang = o.language;
if (!dates[lang]) {
lang = lang.split('-')[0];
if (!dates[lang])
lang = defaults.language;
}
o.language = lang;
switch(o.startView){
case 2:
case 'decade':
o.startView = 2;
break;
case 1:
case 'year':
o.startView = 1;
break;
default:
o.startView = 0;
}
switch (o.minViewMode) {
case 1:
case 'months':
o.minViewMode = 1;
break;
case 2:
case 'years':
o.minViewMode = 2;
break;
default:
o.minViewMode = 0;
}
o.startView = Math.max(o.startView, o.minViewMode);
o.weekStart %= 7;
o.weekEnd = ((o.weekStart + 6) % 7);
var format = DPGlobal.parseFormat(o.format);
if (o.startDate !== -Infinity) {
if (!!o.startDate) {
if (o.startDate instanceof Date)
o.startDate = this._local_to_utc(this._zero_time(o.startDate));
else
o.startDate = DPGlobal.parseDate(o.startDate, format, o.language);
} else {
o.startDate = -Infinity;
}
}
if (o.endDate !== Infinity) {
if (!!o.endDate) {
if (o.endDate instanceof Date)
o.endDate = this._local_to_utc(this._zero_time(o.endDate));
else
o.endDate = DPGlobal.parseDate(o.endDate, format, o.language);
} else {
o.endDate = Infinity;
}
}
o.daysOfWeekDisabled = o.daysOfWeekDisabled||[];
if (!$.isArray(o.daysOfWeekDisabled))
o.daysOfWeekDisabled = o.daysOfWeekDisabled.split(/[,\s]*/);
o.daysOfWeekDisabled = $.map(o.daysOfWeekDisabled, function (d) {
return parseInt(d, 10);
});
var plc = String(o.orientation).toLowerCase().split(/\s+/g),
_plc = o.orientation.toLowerCase();
plc = $.grep(plc, function(word){
return (/^auto|left|right|top|bottom$/).test(word);
});
o.orientation = {x: 'auto', y: 'auto'};
if (!_plc || _plc === 'auto')
; // no action
else if (plc.length === 1){
switch(plc[0]){
case 'top':
case 'bottom':
o.orientation.y = plc[0];
break;
case 'left':
case 'right':
o.orientation.x = plc[0];
break;
}
}
else {
_plc = $.grep(plc, function(word){
return (/^left|right$/).test(word);
});
o.orientation.x = _plc[0] || 'auto';
_plc = $.grep(plc, function(word){
return (/^top|bottom$/).test(word);
});
o.orientation.y = _plc[0] || 'auto';
}
},
_events: [],
_secondaryEvents: [],
_applyEvents: function(evs){
for (var i=0, el, ev; i<evs.length; i++){
el = evs[i][0];
ev = evs[i][1];
el.on(ev);
}
},
_unapplyEvents: function(evs){
for (var i=0, el, ev; i<evs.length; i++){
el = evs[i][0];
ev = evs[i][1];
el.off(ev);
}
},
_buildEvents: function(){
if (this.isInput) { // single input
this._events = [
[this.element, {
focus: $.proxy(this.show, this),
keyup: $.proxy(this.update, this),
keydown: $.proxy(this.keydown, this)
}]
];
}
else if (this.component && this.hasInput){ // component: input + button
this._events = [
// For components that are not readonly, allow keyboard nav
[this.element.find('input'), {
focus: $.proxy(this.show, this),
keyup: $.proxy(this.update, this),
keydown: $.proxy(this.keydown, this)
}],
[this.component, {
click: $.proxy(this.show, this)
}]
];
}
else if (this.element.is('div')) { // inline datepicker
this.isInline = true;
}
else {
this._events = [
[this.element, {
click: $.proxy(this.show, this)
}]
];
}
this._secondaryEvents = [
[this.picker, {
click: $.proxy(this.click, this)
}],
[$(window), {
resize: $.proxy(this.place, this)
}],
[$(document), {
mousedown: $.proxy(function (e) {
// Clicked outside the datepicker, hide it
if (!(
this.element.is(e.target) ||
this.element.find(e.target).length ||
this.picker.is(e.target) ||
this.picker.find(e.target).length
)) {
this.hide();
}
}, this)
}]
];
},
_attachEvents: function(){
this._detachEvents();
this._applyEvents(this._events);
},
_detachEvents: function(){
this._unapplyEvents(this._events);
},
_attachSecondaryEvents: function(){
this._detachSecondaryEvents();
this._applyEvents(this._secondaryEvents);
},
_detachSecondaryEvents: function(){
this._unapplyEvents(this._secondaryEvents);
},
_trigger: function(event, altdate){
var date = altdate || this.date,
local_date = this._utc_to_local(date);
this.element.trigger({
type: event,
date: local_date,
format: $.proxy(function(altformat){
var format = altformat || this.o.format;
return DPGlobal.formatDate(date, format, this.o.language);
}, this)
});
},
show: function(e) {
if (!this.isInline)
this.picker.appendTo('body');
this.picker.show();
this.height = this.component ? this.component.outerHeight() : this.element.outerHeight();
this.place();
this._attachSecondaryEvents();
if (e) {
e.preventDefault();
}
this._trigger('show');
},
hide: function(e){
if(this.isInline) return;
if (!this.picker.is(':visible')) return;
this.picker.hide().detach();
this._detachSecondaryEvents();
this.viewMode = this.o.startView;
this.showMode();
if (
this.o.forceParse &&
(
this.isInput && this.element.val() ||
this.hasInput && this.element.find('input').val()
)
)
this.setValue();
this._trigger('hide');
},
remove: function() {
this.hide();
this._detachEvents();
this._detachSecondaryEvents();
this.picker.remove();
delete this.element.data().datepicker;
if (!this.isInput) {
delete this.element.data().date;
}
},
_utc_to_local: function(utc){
return new Date(utc.getTime() + (utc.getTimezoneOffset()*60000));
},
_local_to_utc: function(local){
return new Date(local.getTime() - (local.getTimezoneOffset()*60000));
},
_zero_time: function(local){
return new Date(local.getFullYear(), local.getMonth(), local.getDate());
},
_zero_utc_time: function(utc){
return new Date(Date.UTC(utc.getUTCFullYear(), utc.getUTCMonth(), utc.getUTCDate()));
},
getDate: function() {
return this._utc_to_local(this.getUTCDate());
},
getUTCDate: function() {
return this.date;
},
setDate: function(d) {
this.setUTCDate(this._local_to_utc(d));
},
setUTCDate: function(d) {
this.date = d;
this.setValue();
},
setValue: function() {
var formatted = this.getFormattedDate();
if (!this.isInput) {
if (this.component){
this.element.find('input').val(formatted).change();
}
} else {
this.element.val(formatted).change();
}
},
getFormattedDate: function(format) {
if (format === undefined)
format = this.o.format;
return DPGlobal.formatDate(this.date, format, this.o.language);
},
setStartDate: function(startDate){
this._process_options({startDate: startDate});
this.update();
this.updateNavArrows();
},
setEndDate: function(endDate){
this._process_options({endDate: endDate});
this.update();
this.updateNavArrows();
},
setDaysOfWeekDisabled: function(daysOfWeekDisabled){
this._process_options({daysOfWeekDisabled: daysOfWeekDisabled});
this.update();
this.updateNavArrows();
},
place: function(){
if(this.isInline) return;
var calendarWidth = this.picker.outerWidth(),
calendarHeight = this.picker.outerHeight(),
visualPadding = 10,
windowWidth = $window.width(),
windowHeight = $window.height(),
scrollTop = $window.scrollTop();
var zIndex = parseInt(this.element.parents().filter(function() {
return $(this).css('z-index') != 'auto';
}).first().css('z-index'))+10;
var offset = this.component ? this.component.parent().offset() : this.element.offset();
var height = this.component ? this.component.outerHeight(true) : this.element.outerHeight(false);
var width = this.component ? this.component.outerWidth(true) : this.element.outerWidth(false);
var left = offset.left,
top = offset.top;
this.picker.removeClass(
'datepicker-orient-top datepicker-orient-bottom '+
'datepicker-orient-right datepicker-orient-left'
);
if (this.o.orientation.x !== 'auto') {
this.picker.addClass('datepicker-orient-' + this.o.orientation.x);
if (this.o.orientation.x === 'right')
left -= calendarWidth - width;
}
// auto x orientation is best-placement: if it crosses a window
// edge, fudge it sideways
else {
// Default to left
this.picker.addClass('datepicker-orient-left');
if (offset.left < 0)
left -= offset.left - visualPadding;
else if (offset.left + calendarWidth > windowWidth)
left = windowWidth - calendarWidth - visualPadding;
}
// auto y orientation is best-situation: top or bottom, no fudging,
// decision based on which shows more of the calendar
var yorient = this.o.orientation.y,
top_overflow, bottom_overflow;
if (yorient === 'auto') {
top_overflow = -scrollTop + offset.top - calendarHeight;
bottom_overflow = scrollTop + windowHeight - (offset.top + height + calendarHeight);
if (Math.max(top_overflow, bottom_overflow) === bottom_overflow)
yorient = 'top';
else
yorient = 'bottom';
}
this.picker.addClass('datepicker-orient-' + yorient);
if (yorient === 'top')
top += height;
else
top -= calendarHeight + parseInt(this.picker.css('padding-top'));
this.picker.css({
top: top,
left: left,
zIndex: zIndex
});
},
_allow_update: true,
update: function(){
if (!this._allow_update) return;
var oldDate = new Date(this.date),
date, fromArgs = false;
if(arguments && arguments.length && (typeof arguments[0] === 'string' || arguments[0] instanceof Date)) {
date = arguments[0];
if (date instanceof Date)
date = this._local_to_utc(date);
fromArgs = true;
} else {
date = this.isInput ? this.element.val() : this.element.data('date') || this.element.find('input').val();
delete this.element.data().date;
}
this.date = DPGlobal.parseDate(date, this.o.format, this.o.language);
if (fromArgs) {
// setting date by clicking
this.setValue();
} else if (date) {
// setting date by typing
if (oldDate.getTime() !== this.date.getTime())
this._trigger('changeDate');
} else {
// clearing date
this._trigger('clearDate');
}
if (this.date < this.o.startDate) {
this.viewDate = new Date(this.o.startDate);
this.date = new Date(this.o.startDate);
} else if (this.date > this.o.endDate) {
this.viewDate = new Date(this.o.endDate);
this.date = new Date(this.o.endDate);
} else {
this.viewDate = new Date(this.date);
this.date = new Date(this.date);
}
this.fill();
},
fillDow: function(){
var dowCnt = this.o.weekStart,
html = '<tr>';
if(this.o.calendarWeeks){
var cell = '<th class="cw"> </th>';
html += cell;
this.picker.find('.datepicker-days thead tr:first-child').prepend(cell);
}
while (dowCnt < this.o.weekStart + 7) {
html += '<th class="dow">'+dates[this.o.language].daysMin[(dowCnt++)%7]+'</th>';
}
html += '</tr>';
this.picker.find('.datepicker-days thead').append(html);
},
fillMonths: function(){
var html = '',
i = 0;
while (i < 12) {
html += '<span class="month">'+dates[this.o.language].monthsShort[i++]+'</span>';
}
this.picker.find('.datepicker-months td').html(html);
},
setRange: function(range){
if (!range || !range.length)
delete this.range;
else
this.range = $.map(range, function(d){ return d.valueOf(); });
this.fill();
},
getClassNames: function(date){
var cls = [],
year = this.viewDate.getUTCFullYear(),
month = this.viewDate.getUTCMonth(),
currentDate = this.date.valueOf(),
today = new Date();
if (date.getUTCFullYear() < year || (date.getUTCFullYear() == year && date.getUTCMonth() < month)) {
cls.push('old');
} else if (date.getUTCFullYear() > year || (date.getUTCFullYear() == year && date.getUTCMonth() > month)) {
cls.push('new');
}
// Compare internal UTC date with local today, not UTC today
if (this.o.todayHighlight &&
date.getUTCFullYear() == today.getFullYear() &&
date.getUTCMonth() == today.getMonth() &&
date.getUTCDate() == today.getDate()) {
cls.push('today');
}
if (currentDate && date.valueOf() == currentDate) {
cls.push('active');
}
if (date.valueOf() < this.o.startDate || date.valueOf() > this.o.endDate ||
$.inArray(date.getUTCDay(), this.o.daysOfWeekDisabled) !== -1) {
cls.push('disabled');
}
if (this.range){
if (date > this.range[0] && date < this.range[this.range.length-1]){
cls.push('range');
}
if ($.inArray(date.valueOf(), this.range) != -1){
cls.push('selected');
}
}
return cls;
},
fill: function() {
var d = new Date(this.viewDate),
year = d.getUTCFullYear(),
month = d.getUTCMonth(),
startYear = this.o.startDate !== -Infinity ? this.o.startDate.getUTCFullYear() : -Infinity,
startMonth = this.o.startDate !== -Infinity ? this.o.startDate.getUTCMonth() : -Infinity,
endYear = this.o.endDate !== Infinity ? this.o.endDate.getUTCFullYear() : Infinity,
endMonth = this.o.endDate !== Infinity ? this.o.endDate.getUTCMonth() : Infinity,
currentDate = this.date && this.date.valueOf(),
tooltip;
this.picker.find('.datepicker-days thead th.datepicker-switch')
.text(dates[this.o.language].months[month]+' '+year);
this.picker.find('tfoot th.today')
.text(dates[this.o.language].today)
.toggle(this.o.todayBtn !== false);
this.picker.find('tfoot th.clear')
.text(dates[this.o.language].clear)
.toggle(this.o.clearBtn !== false);
this.updateNavArrows();
this.fillMonths();
var prevMonth = UTCDate(year, month-1, 28,0,0,0,0),
day = DPGlobal.getDaysInMonth(prevMonth.getUTCFullYear(), prevMonth.getUTCMonth());
prevMonth.setUTCDate(day);
prevMonth.setUTCDate(day - (prevMonth.getUTCDay() - this.o.weekStart + 7)%7);
var nextMonth = new Date(prevMonth);
nextMonth.setUTCDate(nextMonth.getUTCDate() + 42);
nextMonth = nextMonth.valueOf();
var html = [];
var clsName;
while(prevMonth.valueOf() < nextMonth) {
if (prevMonth.getUTCDay() == this.o.weekStart) {
html.push('<tr>');
if(this.o.calendarWeeks){
// ISO 8601: First week contains first thursday.
// ISO also states week starts on Monday, but we can be more abstract here.
var
// Start of current week: based on weekstart/current date
ws = new Date(+prevMonth + (this.o.weekStart - prevMonth.getUTCDay() - 7) % 7 * 864e5),
// Thursday of this week
th = new Date(+ws + (7 + 4 - ws.getUTCDay()) % 7 * 864e5),
// First Thursday of year, year from thursday
yth = new Date(+(yth = UTCDate(th.getUTCFullYear(), 0, 1)) + (7 + 4 - yth.getUTCDay())%7*864e5),
// Calendar week: ms between thursdays, div ms per day, div 7 days
calWeek = (th - yth) / 864e5 / 7 + 1;
html.push('<td class="cw">'+ calWeek +'</td>');
}
}
clsName = this.getClassNames(prevMonth);
clsName.push('day');
if (this.o.beforeShowDay !== $.noop){
var before = this.o.beforeShowDay(this._utc_to_local(prevMonth));
if (before === undefined)
before = {};
else if (typeof(before) === 'boolean')
before = {enabled: before};
else if (typeof(before) === 'string')
before = {classes: before};
if (before.enabled === false)
clsName.push('disabled');
if (before.classes)
clsName = clsName.concat(before.classes.split(/\s+/));
if (before.tooltip)
tooltip = before.tooltip;
}
clsName = $.unique(clsName);
html.push('<td class="'+clsName.join(' ')+'"' + (tooltip ? ' title="'+tooltip+'"' : '') + '>'+prevMonth.getUTCDate() + '</td>');
if (prevMonth.getUTCDay() == this.o.weekEnd) {
html.push('</tr>');
}
prevMonth.setUTCDate(prevMonth.getUTCDate()+1);
}
this.picker.find('.datepicker-days tbody').empty().append(html.join(''));
var currentYear = this.date && this.date.getUTCFullYear();
var months = this.picker.find('.datepicker-months')
.find('th:eq(1)')
.text(year)
.end()
.find('span').removeClass('active');
if (currentYear && currentYear == year) {
months.eq(this.date.getUTCMonth()).addClass('active');
}
if (year < startYear || year > endYear) {
months.addClass('disabled');
}
if (year == startYear) {
months.slice(0, startMonth).addClass('disabled');
}
if (year == endYear) {
months.slice(endMonth+1).addClass('disabled');
}
html = '';
year = parseInt(year/10, 10) * 10;
var yearCont = this.picker.find('.datepicker-years')
.find('th:eq(1)')
.text(year + '-' + (year + 9))
.end()
.find('td');
year -= 1;
for (var i = -1; i < 11; i++) {
html += '<span class="year'+(i == -1 ? ' old' : i == 10 ? ' new' : '')+(currentYear == year ? ' active' : '')+(year < startYear || year > endYear ? ' disabled' : '')+'">'+year+'</span>';
year += 1;
}
yearCont.html(html);
},
updateNavArrows: function() {
if (!this._allow_update) return;
var d = new Date(this.viewDate),
year = d.getUTCFullYear(),
month = d.getUTCMonth();
switch (this.viewMode) {
case 0:
if (this.o.startDate !== -Infinity && year <= this.o.startDate.getUTCFullYear() && month <= this.o.startDate.getUTCMonth()) {
this.picker.find('.prev').css({visibility: 'hidden'});
} else {
this.picker.find('.prev').css({visibility: 'visible'});
}
if (this.o.endDate !== Infinity && year >= this.o.endDate.getUTCFullYear() && month >= this.o.endDate.getUTCMonth()) {
this.picker.find('.next').css({visibility: 'hidden'});
} else {
this.picker.find('.next').css({visibility: 'visible'});
}
break;
case 1:
case 2:
if (this.o.startDate !== -Infinity && year <= this.o.startDate.getUTCFullYear()) {
this.picker.find('.prev').css({visibility: 'hidden'});
} else {
this.picker.find('.prev').css({visibility: 'visible'});
}
if (this.o.endDate !== Infinity && year >= this.o.endDate.getUTCFullYear()) {
this.picker.find('.next').css({visibility: 'hidden'});
} else {
this.picker.find('.next').css({visibility: 'visible'});
}
break;
}
},
click: function(e) {
e.preventDefault();
var target = $(e.target).closest('span, td, th');
if (target.length == 1) {
switch(target[0].nodeName.toLowerCase()) {
case 'th':
switch(target[0].className) {
case 'datepicker-switch':
this.showMode(1);
break;
case 'prev':
case 'next':
var dir = DPGlobal.modes[this.viewMode].navStep * (target[0].className == 'prev' ? -1 : 1);
switch(this.viewMode){
case 0:
this.viewDate = this.moveMonth(this.viewDate, dir);
this._trigger('changeMonth', this.viewDate);
break;
case 1:
case 2:
this.viewDate = this.moveYear(this.viewDate, dir);
if (this.viewMode === 1)
this._trigger('changeYear', this.viewDate);
break;
}
this.fill();
break;
case 'today':
var date = new Date();
date = UTCDate(date.getFullYear(), date.getMonth(), date.getDate(), 0, 0, 0);
this.showMode(-2);
var which = this.o.todayBtn == 'linked' ? null : 'view';
this._setDate(date, which);
break;
case 'clear':
var element;
if (this.isInput)
element = this.element;
else if (this.component)
element = this.element.find('input');
if (element)
element.val("").change();
this._trigger('changeDate');
this.update();
if (this.o.autoclose)
this.hide();
break;
}
break;
case 'span':
if (!target.is('.disabled')) {
this.viewDate.setUTCDate(1);
if (target.is('.month')) {
var day = 1;
var month = target.parent().find('span').index(target);
var year = this.viewDate.getUTCFullYear();
this.viewDate.setUTCMonth(month);
this._trigger('changeMonth', this.viewDate);
if (this.o.minViewMode === 1) {
this._setDate(UTCDate(year, month, day,0,0,0,0));
}
} else {
var year = parseInt(target.text(), 10)||0;
var day = 1;
var month = 0;
this.viewDate.setUTCFullYear(year);
this._trigger('changeYear', this.viewDate);
if (this.o.minViewMode === 2) {
this._setDate(UTCDate(year, month, day,0,0,0,0));
}
}
this.showMode(-1);
this.fill();
}
break;
case 'td':
if (target.is('.day') && !target.is('.disabled')){
var day = parseInt(target.text(), 10)||1;
var year = this.viewDate.getUTCFullYear(),
month = this.viewDate.getUTCMonth();
if (target.is('.old')) {
if (month === 0) {
month = 11;
year -= 1;
} else {
month -= 1;
}
} else if (target.is('.new')) {
if (month == 11) {
month = 0;
year += 1;
} else {
month += 1;
}
}
this._setDate(UTCDate(year, month, day,0,0,0,0));
}
break;
}
}
},
_setDate: function(date, which){
if (!which || which == 'date')
this.date = new Date(date);
if (!which || which == 'view')
this.viewDate = new Date(date);
this.fill();
this.setValue();
this._trigger('changeDate');
var element;
if (this.isInput) {
element = this.element;
} else if (this.component){
element = this.element.find('input');
}
if (element) {
element.change();
}
if (this.o.autoclose && (!which || which == 'date')) {
this.hide();
}
},
moveMonth: function(date, dir){
if (!dir) return date;
var new_date = new Date(date.valueOf()),
day = new_date.getUTCDate(),
month = new_date.getUTCMonth(),
mag = Math.abs(dir),
new_month, test;
dir = dir > 0 ? 1 : -1;
if (mag == 1){
test = dir == -1
// If going back one month, make sure month is not current month
// (eg, Mar 31 -> Feb 31 == Feb 28, not Mar 02)
? function(){ return new_date.getUTCMonth() == month; }
// If going forward one month, make sure month is as expected
// (eg, Jan 31 -> Feb 31 == Feb 28, not Mar 02)
: function(){ return new_date.getUTCMonth() != new_month; };
new_month = month + dir;
new_date.setUTCMonth(new_month);
// Dec -> Jan (12) or Jan -> Dec (-1) -- limit expected date to 0-11
if (new_month < 0 || new_month > 11)
new_month = (new_month + 12) % 12;
} else {
// For magnitudes >1, move one month at a time...
for (var i=0; i<mag; i++)
// ...which might decrease the day (eg, Jan 31 to Feb 28, etc)...
new_date = this.moveMonth(new_date, dir);
// ...then reset the day, keeping it in the new month
new_month = new_date.getUTCMonth();
new_date.setUTCDate(day);
test = function(){ return new_month != new_date.getUTCMonth(); };
}
// Common date-resetting loop -- if date is beyond end of month, make it
// end of month
while (test()){
new_date.setUTCDate(--day);
new_date.setUTCMonth(new_month);
}
return new_date;
},
moveYear: function(date, dir){
return this.moveMonth(date, dir*12);
},
dateWithinRange: function(date){
return date >= this.o.startDate && date <= this.o.endDate;
},
keydown: function(e){
if (this.picker.is(':not(:visible)')){
if (e.keyCode == 27) // allow escape to hide and re-show picker
this.show();
return;
}
var dateChanged = false,
dir, day, month,
newDate, newViewDate;
switch(e.keyCode){
case 27: // escape
this.hide();
e.preventDefault();
break;
case 37: // left
case 39: // right
if (!this.o.keyboardNavigation) break;
dir = e.keyCode == 37 ? -1 : 1;
if (e.ctrlKey){
newDate = this.moveYear(this.date, dir);
newViewDate = this.moveYear(this.viewDate, dir);
this._trigger('changeYear', this.viewDate);
} else if (e.shiftKey){
newDate = this.moveMonth(this.date, dir);
newViewDate = this.moveMonth(this.viewDate, dir);
this._trigger('changeMonth', this.viewDate);
} else {
newDate = new Date(this.date);
newDate.setUTCDate(this.date.getUTCDate() + dir);
newViewDate = new Date(this.viewDate);
newViewDate.setUTCDate(this.viewDate.getUTCDate() + dir);
}
if (this.dateWithinRange(newDate)){
this.date = newDate;
this.viewDate = newViewDate;
this.setValue();
this.update();
e.preventDefault();
dateChanged = true;
}
break;
case 38: // up
case 40: // down
if (!this.o.keyboardNavigation) break;
dir = e.keyCode == 38 ? -1 : 1;
if (e.ctrlKey){
newDate = this.moveYear(this.date, dir);
newViewDate = this.moveYear(this.viewDate, dir);
this._trigger('changeYear', this.viewDate);
} else if (e.shiftKey){
newDate = this.moveMonth(this.date, dir);
newViewDate = this.moveMonth(this.viewDate, dir);
this._trigger('changeMonth', this.viewDate);
} else {
newDate = new Date(this.date);
newDate.setUTCDate(this.date.getUTCDate() + dir * 7);
newViewDate = new Date(this.viewDate);
newViewDate.setUTCDate(this.viewDate.getUTCDate() + dir * 7);
}
if (this.dateWithinRange(newDate)){
this.date = newDate;
this.viewDate = newViewDate;
this.setValue();
this.update();
e.preventDefault();
dateChanged = true;
}
break;
case 13: // enter
this.hide();
e.preventDefault();
break;
case 9: // tab
this.hide();
break;
}
if (dateChanged){
this._trigger('changeDate');
var element;
if (this.isInput) {
element = this.element;
} else if (this.component){
element = this.element.find('input');
}
if (element) {
element.change();
}
}
},
showMode: function(dir) {
if (dir) {
this.viewMode = Math.max(this.o.minViewMode, Math.min(2, this.viewMode + dir));
}
/*
vitalets: fixing bug of very special conditions: