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/* eslint-disable max-len, camelcase */
* jQuery UI Datepicker 1.13.3
* Copyright OpenJS Foundation and other contributors
* Released under the MIT license.
* https://jquery.org/license
//>>description: Displays a calendar from an input or inline for selecting dates.
//>>docs: https://api.jqueryui.com/datepicker/
//>>demos: https://jqueryui.com/datepicker/
//>>css.structure: ../../themes/base/core.css
//>>css.structure: ../../themes/base/datepicker.css
//>>css.theme: ../../themes/base/theme.css
if ( typeof define === "function" && define.amd ) {
// AMD. Register as an anonymous module.
$.extend( $.ui, { datepicker: { version: "1.13.3" } } );
var datepicker_instActive;
function datepicker_getZindex( elem ) {
while ( elem.length && elem[ 0 ] !== document ) {
// Ignore z-index if position is set to a value where z-index is ignored by the browser
// This makes behavior of this function consistent across browsers
// WebKit always returns auto if the element is positioned
position = elem.css( "position" );
if ( position === "absolute" || position === "relative" || position === "fixed" ) {
// IE returns 0 when zIndex is not specified
// other browsers return a string
// we ignore the case of nested elements with an explicit value of 0
// <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
value = parseInt( elem.css( "zIndex" ), 10 );
if ( !isNaN( value ) && value !== 0 ) {
Use the singleton instance of this class, $.datepicker, to interact with the date picker.
Settings for (groups of) date pickers are maintained in an instance object,
allowing multiple different settings on the same page. */
this._curInst = null; // The current instance in use
this._keyEvent = false; // If the last event was a key event
this._disabledInputs = []; // List of date picker inputs that have been disabled
this._datepickerShowing = false; // True if the popup picker is showing , false if not
this._inDialog = false; // True if showing within a "dialog", false if not
this._mainDivId = "ui-datepicker-div"; // The ID of the main datepicker division
this._inlineClass = "ui-datepicker-inline"; // The name of the inline marker class
this._appendClass = "ui-datepicker-append"; // The name of the append marker class
this._triggerClass = "ui-datepicker-trigger"; // The name of the trigger marker class
this._dialogClass = "ui-datepicker-dialog"; // The name of the dialog marker class
this._disableClass = "ui-datepicker-disabled"; // The name of the disabled covering marker class
this._unselectableClass = "ui-datepicker-unselectable"; // The name of the unselectable cell marker class
this._currentClass = "ui-datepicker-current-day"; // The name of the current day marker class
this._dayOverClass = "ui-datepicker-days-cell-over"; // The name of the day hover marker class
this.regional = []; // Available regional settings, indexed by language code
this.regional[ "" ] = { // Default regional settings
closeText: "Done", // Display text for close link
prevText: "Prev", // Display text for previous month link
nextText: "Next", // Display text for next month link
currentText: "Today", // Display text for current month link
monthNames: [ "January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December" ], // Names of months for drop-down and formatting
monthNamesShort: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ], // For formatting
dayNames: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ], // For formatting
dayNamesShort: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ], // For formatting
dayNamesMin: [ "Su", "Mo", "Tu", "We", "Th", "Fr", "Sa" ], // Column headings for days starting at Sunday
weekHeader: "Wk", // Column header for week of the year
dateFormat: "mm/dd/yy", // See format options on parseDate
firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
isRTL: false, // True if right-to-left language, false if left-to-right
showMonthAfterYear: false, // True if the year select precedes month, false for month then year
yearSuffix: "", // Additional text to append to the year in the month headers,
selectMonthLabel: "Select month", // Invisible label for month selector
selectYearLabel: "Select year" // Invisible label for year selector
this._defaults = { // Global defaults for all the date picker instances
showOn: "focus", // "focus" for popup on focus,
// "button" for trigger button, or "both" for either
showAnim: "fadeIn", // Name of jQuery animation for popup
showOptions: {}, // Options for enhanced animations
defaultDate: null, // Used when field is blank: actual date,
// +/-number for offset from today, null for today
appendText: "", // Display text following the input box, e.g. showing the format
buttonText: "...", // Text for trigger button
buttonImage: "", // URL for trigger button image
buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
hideIfNoPrevNext: false, // True to hide next/previous month links
// if not applicable, false to just disable them
navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
gotoCurrent: false, // True if today link goes back to current selection instead
changeMonth: false, // True if month can be selected directly, false if only prev/next
changeYear: false, // True if year can be selected directly, false if only prev/next
yearRange: "c-10:c+10", // Range of years to display in drop-down,
// either relative to today's year (-nn:+nn), relative to currently displayed year
// (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
showOtherMonths: false, // True to show dates in other months, false to leave blank
selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
showWeek: false, // True to show week of the year, false to not show it
calculateWeek: this.iso8601Week, // How to calculate the week of the year,
// takes a Date and returns the number of the week for it
shortYearCutoff: "+10", // Short year values < this are in the current century,
// > this are in the previous century,
// string value starting with "+" for current year + value
minDate: null, // The earliest selectable date, or null for no limit
maxDate: null, // The latest selectable date, or null for no limit
duration: "fast", // Duration of display/closure
beforeShowDay: null, // Function that takes a date and returns an array with
// [0] = true if selectable, false if not, [1] = custom CSS class name(s) or "",
// [2] = cell title (optional), e.g. $.datepicker.noWeekends
beforeShow: null, // Function that takes an input field and
// returns a set of custom settings for the date picker
onSelect: null, // Define a callback function when a date is selected
onChangeMonthYear: null, // Define a callback function when the month or year is changed
onClose: null, // Define a callback function when the datepicker is closed
onUpdateDatepicker: null, // Define a callback function when the datepicker is updated
numberOfMonths: 1, // Number of months to show at a time
showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
stepMonths: 1, // Number of months to step back/forward
stepBigMonths: 12, // Number of months to step back/forward for the big links
altField: "", // Selector for an alternate field to store selected dates into
altFormat: "", // The date format to use for the alternate field
constrainInput: true, // The input is constrained by the current date format
showButtonPanel: false, // True to show button panel, false to not show it
autoSize: false, // True to size the input for the date format, false to leave as is
disabled: false // The initial disabled state
$.extend( this._defaults, this.regional[ "" ] );
this.regional.en = $.extend( true, {}, this.regional[ "" ] );
this.regional[ "en-US" ] = $.extend( true, {}, this.regional.en );
this.dpDiv = datepicker_bindHover( $( "<div id='" + this._mainDivId + "' class='ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all'></div>" ) );
$.extend( Datepicker.prototype, {
/* Class name added to elements to indicate already configured with a date picker. */
markerClassName: "hasDatepicker",
//Keep track of the maximum number of rows displayed (see #7043)
// TODO rename to "widget" when switching to widget factory
_widgetDatepicker: function() {
/* Override the default settings for all instances of the date picker.
* @param settings object - the new settings to use as defaults (anonymous object)
* @return the manager object
setDefaults: function( settings ) {
datepicker_extendRemove( this._defaults, settings || {} );
/* Attach the date picker to a jQuery selection.
* @param target element - the target input field or division or span
* @param settings object - the new settings to use for this date picker instance (anonymous)
_attachDatepicker: function( target, settings ) {
var nodeName, inline, inst;
nodeName = target.nodeName.toLowerCase();
inline = ( nodeName === "div" || nodeName === "span" );
target.id = "dp" + this.uuid;
inst = this._newInst( $( target ), inline );
inst.settings = $.extend( {}, settings || {} );
if ( nodeName === "input" ) {
this._connectDatepicker( target, inst );
this._inlineDatepicker( target, inst );
/* Create a new instance object. */
_newInst: function( target, inline ) {
var id = target[ 0 ].id.replace( /([^A-Za-z0-9_\-])/g, "\\\\$1" ); // escape jQuery meta chars
return { id: id, input: target, // associated target
selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
drawMonth: 0, drawYear: 0, // month being drawn
inline: inline, // is datepicker inline or not
dpDiv: ( !inline ? this.dpDiv : // presentation div
datepicker_bindHover( $( "<div class='" + this._inlineClass + " ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all'></div>" ) ) ) };
/* Attach the date picker to an input field. */
_connectDatepicker: function( target, inst ) {
if ( input.hasClass( this.markerClassName ) ) {
this._attachments( input, inst );
input.addClass( this.markerClassName ).on( "keydown", this._doKeyDown ).
on( "keypress", this._doKeyPress ).on( "keyup", this._doKeyUp );
$.data( target, "datepicker", inst );
//If disabled option is true, disable the datepicker once it has been attached to the input (see ticket #5665)
if ( inst.settings.disabled ) {
this._disableDatepicker( target );
/* Make attachments based on settings. */
_attachments: function( input, inst ) {
var showOn, buttonText, buttonImage,
appendText = this._get( inst, "appendText" ),
isRTL = this._get( inst, "isRTL" );
inst.append = $( "<span>" )
.addClass( this._appendClass )
input[ isRTL ? "before" : "after" ]( inst.append );
input.off( "focus", this._showDatepicker );
showOn = this._get( inst, "showOn" );
if ( showOn === "focus" || showOn === "both" ) { // pop-up date picker when in the marked field
input.on( "focus", this._showDatepicker );
if ( showOn === "button" || showOn === "both" ) { // pop-up date picker when button clicked
buttonText = this._get( inst, "buttonText" );
buttonImage = this._get( inst, "buttonImage" );
if ( this._get( inst, "buttonImageOnly" ) ) {
inst.trigger = $( "<img>" )
.addClass( this._triggerClass )
inst.trigger = $( "<button type='button'>" )
.addClass( this._triggerClass );
inst.trigger.text( buttonText );
input[ isRTL ? "before" : "after" ]( inst.trigger );
inst.trigger.on( "click", function() {
if ( $.datepicker._datepickerShowing && $.datepicker._lastInput === input[ 0 ] ) {
$.datepicker._hideDatepicker();
} else if ( $.datepicker._datepickerShowing && $.datepicker._lastInput !== input[ 0 ] ) {
$.datepicker._hideDatepicker();
$.datepicker._showDatepicker( input[ 0 ] );
$.datepicker._showDatepicker( input[ 0 ] );
/* Apply the maximum length for the date format. */
_autoSize: function( inst ) {
if ( this._get( inst, "autoSize" ) && !inst.inline ) {
var findMax, max, maxI, i,
date = new Date( 2009, 12 - 1, 20 ), // Ensure double digits
dateFormat = this._get( inst, "dateFormat" );
if ( dateFormat.match( /[DM]/ ) ) {
findMax = function( names ) {
for ( i = 0; i < names.length; i++ ) {
if ( names[ i ].length > max ) {
date.setMonth( findMax( this._get( inst, ( dateFormat.match( /MM/ ) ?
"monthNames" : "monthNamesShort" ) ) ) );
date.setDate( findMax( this._get( inst, ( dateFormat.match( /DD/ ) ?
"dayNames" : "dayNamesShort" ) ) ) + 20 - date.getDay() );
inst.input.attr( "size", this._formatDate( inst, date ).length );
/* Attach an inline date picker to a div. */
_inlineDatepicker: function( target, inst ) {
var divSpan = $( target );
if ( divSpan.hasClass( this.markerClassName ) ) {
divSpan.addClass( this.markerClassName ).append( inst.dpDiv );
$.data( target, "datepicker", inst );
this._setDate( inst, this._getDefaultDate( inst ), true );
this._updateDatepicker( inst );
this._updateAlternate( inst );
//If disabled option is true, disable the datepicker before showing it (see ticket #5665)
if ( inst.settings.disabled ) {
this._disableDatepicker( target );
// Set display:block in place of inst.dpDiv.show() which won't work on disconnected elements
// https://bugs.jqueryui.com/ticket/7552 - A Datepicker created on a detached div has zero height
inst.dpDiv.css( "display", "block" );
/* Pop-up the date picker in a "dialog" box.
* @param input element - ignored
* @param date string or Date - the initial date to display
* @param onSelect function - the function to call when a date is selected
* @param settings object - update the dialog date picker instance's settings (anonymous object)
* @param pos int[2] - coordinates for the dialog's position within the screen or
* event - with x/y coordinates or
* leave empty for default (screen centre)
* @return the manager object
_dialogDatepicker: function( input, date, onSelect, settings, pos ) {
var id, browserWidth, browserHeight, scrollX, scrollY,
inst = this._dialogInst; // internal instance
this._dialogInput = $( "<input type='text' id='" + id +
"' style='position: absolute; top: -100px; width: 0px;'/>" );
this._dialogInput.on( "keydown", this._doKeyDown );
$( "body" ).append( this._dialogInput );
inst = this._dialogInst = this._newInst( this._dialogInput, false );
$.data( this._dialogInput[ 0 ], "datepicker", inst );
datepicker_extendRemove( inst.settings, settings || {} );
date = ( date && date.constructor === Date ? this._formatDate( inst, date ) : date );
this._dialogInput.val( date );
this._pos = ( pos ? ( pos.length ? pos : [ pos.pageX, pos.pageY ] ) : null );
browserWidth = document.documentElement.clientWidth;
browserHeight = document.documentElement.clientHeight;
scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
scrollY = document.documentElement.scrollTop || document.body.scrollTop;
this._pos = // should use actual width/height below
[ ( browserWidth / 2 ) - 100 + scrollX, ( browserHeight / 2 ) - 150 + scrollY ];
// Move input on screen for focus, but hidden behind dialog
this._dialogInput.css( "left", ( this._pos[ 0 ] + 20 ) + "px" ).css( "top", this._pos[ 1 ] + "px" );
inst.settings.onSelect = onSelect;
this.dpDiv.addClass( this._dialogClass );
this._showDatepicker( this._dialogInput[ 0 ] );
$.data( this._dialogInput[ 0 ], "datepicker", inst );
/* Detach a datepicker from its control.
* @param target element - the target input field or division or span
_destroyDatepicker: function( target ) {
inst = $.data( target, "datepicker" );
if ( !$target.hasClass( this.markerClassName ) ) {
nodeName = target.nodeName.toLowerCase();
$.removeData( target, "datepicker" );
if ( nodeName === "input" ) {
$target.removeClass( this.markerClassName ).
off( "focus", this._showDatepicker ).
off( "keydown", this._doKeyDown ).
off( "keypress", this._doKeyPress ).
off( "keyup", this._doKeyUp );
} else if ( nodeName === "div" || nodeName === "span" ) {
$target.removeClass( this.markerClassName ).empty();
if ( datepicker_instActive === inst ) {
datepicker_instActive = null;
/* Enable the date picker to a jQuery selection.
* @param target element - the target input field or division or span
_enableDatepicker: function( target ) {
inst = $.data( target, "datepicker" );
if ( !$target.hasClass( this.markerClassName ) ) {
nodeName = target.nodeName.toLowerCase();
if ( nodeName === "input" ) {
inst.trigger.filter( "button" ).
filter( "img" ).css( { opacity: "1.0", cursor: "" } );
} else if ( nodeName === "div" || nodeName === "span" ) {
inline = $target.children( "." + this._inlineClass );
inline.children().removeClass( "ui-state-disabled" );
inline.find( "select.ui-datepicker-month, select.ui-datepicker-year" ).
prop( "disabled", false );
this._disabledInputs = $.map( this._disabledInputs,
return ( value === target ? null : value );
/* Disable the date picker to a jQuery selection.
* @param target element - the target input field or division or span
_disableDatepicker: function( target ) {
inst = $.data( target, "datepicker" );
if ( !$target.hasClass( this.markerClassName ) ) {
nodeName = target.nodeName.toLowerCase();
if ( nodeName === "input" ) {
inst.trigger.filter( "button" ).
filter( "img" ).css( { opacity: "0.5", cursor: "default" } );
} else if ( nodeName === "div" || nodeName === "span" ) {
inline = $target.children( "." + this._inlineClass );
inline.children().addClass( "ui-state-disabled" );