/* jQuery UI Date Picker v3.3 - previously jQuery Calendar
Written by Marc Grabanski (m@marcgrabanski.com) and Keith Wood (kbwood@virginbroadband.com.au).
Copyright (c) 2007 Marc Grabanski (http://marcgrabanski.com/code/ui-datepicker)
Dual licensed under the MIT (MIT-LICENSE.txt)
and GPL (GPL-LICENSE.txt) licenses.
Date: 09-03-2007 */
/* Date picker manager.
Use the singleton instance of this class, $.datepicker, to interact with the date picker.
Settings for (groups of) date pickers are maintained in an instance object
(DatepickerInstance), allowing multiple different settings on the same page. */
(function($) { // hide the namespace
function Datepicker() {
this.debug = false; // Change this to true to start debugging
this._nextId = 0; // Next ID for a date picker instance
this._inst = []; // List of instances indexed by ID
this._curInst = null; // The current instance in use
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.regional = []; // Available regional settings, indexed by language code
this.regional[''] = { // Default regional settings
clearText: 'Clear', // Display text for clear link
clearStatus: 'Erase the current date', // Status text for clear link
closeText: 'Close', // Display text for close link
closeStatus: 'Close without change', // Status text for close link
prevText: '<Prev', // Display text for previous month link
prevStatus: 'Show the previous month', // Status text for previous month link
nextText: 'Next>', // Display text for next month link
nextStatus: 'Show the next month', // Status text for next month link
currentText: 'Today', // Display text for current month link
currentStatus: 'Show the current month', // Status 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
monthStatus: 'Show a different month', // Status text for selecting a month
yearStatus: 'Show a different year', // Status text for selecting a year
weekHeader: 'Wk', // Header for the week of the year column
weekStatus: 'Week of the year', // Status text for the week of the year column
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
dayStatus: 'Set DD as first week day', // Status text for the day of the week selection
dateStatus: 'Select DD, M d', // Status text for the date selection
dateFormat: 'mm/dd/yy', // See format options on parseDate
firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
initStatus: 'Select a date', // Initial Status text on opening
isRTL: false // True if right-to-left language, false if left-to-right
};
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: 'show', // Name of jQuery animation for popup
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
closeAtTop: true, // True to have the clear/close at the top,
// false to have them at the bottom
mandatory: false, // True to hide the Clear link, false to include it
hideIfNoPrevNext: false, // True to hide next/previous month links
// if not applicable, false to just disable them
changeMonth: true, // True if month can be selected directly, false if only prev/next
changeYear: true, // True if year can be selected directly, false if only prev/next
yearRange: '-10:+10', // Range of years to display in drop-down,
// either relative to current year (-nn:+nn) or absolute (nnnn:nnnn)
changeFirstDay: true, // True to click on day name to change, false to remain as set
showOtherMonths: false, // True to show dates in other months, false to leave blank
showWeeks: false, // True to show week of the year, false to omit
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
showStatus: false, // True to show status bar at bottom, false to not show it
statusForDate: this.dateStatus, // Function to provide status text for a date -
// takes date and instance as parameters, returns display text
minDate: null, // The earliest selectable date, or null for no limit
maxDate: null, // The latest selectable date, or null for no limit
speed: 'medium', // Speed 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 '', 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
onShow: undefined,
onHide: undefined,
numberOfMonths: 1, // Number of months to show at a time
stepMonths: 1, // Number of months to step back/forward
rangeSelect: false, // Allows for selecting a date range on one date picker
rangeSeparator: ' - ' // Text between two dates in a range
};
$.extend(this._defaults, this.regional['']);
this._datepickerDiv = $('');
}
$.extend(Datepicker.prototype, {
/* Class name added to elements to indicate already configured with a date picker. */
markerClassName: 'hasDatepicker',
/* Debug logging (if enabled). */
log: function() {
if (this.debug) {
console.log.apply('', arguments);
}
},
/* Register a new date picker instance - with custom settings. */
_register: function(inst) {
var id = this._nextId++;
this._inst[id] = inst;
return id;
},
/* Retrieve a particular date picker instance based on its ID. */
_getInst: function(id) {
return this._inst[id] || id;
},
/* 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) {
extendRemove(this._defaults, settings || {});
return this;
},
/* Handle keystrokes. */
_doKeyDown: function(e) {
var inst = $.datepicker._getInst(this._calId);
if ($.datepicker._datepickerShowing) {
switch (e.keyCode) {
case 9: $.datepicker.hideDatepicker('');
break; // hide on tab out
case 13: $.datepicker._selectDay(inst, inst._selectedMonth, inst._selectedYear,
$('td.datepicker_daysCellOver', inst._datepickerDiv)[0]);
return false; // don't submit the form
break; // select the value on enter
case 27: $.datepicker.hideDatepicker(inst._get('speed'));
break; // hide on escape
case 33: $.datepicker._adjustDate(inst,
(e.ctrlKey ? -1 : -inst._get('stepMonths')), (e.ctrlKey ? 'Y' : 'M'));
break; // previous month/year on page up/+ ctrl
case 34: $.datepicker._adjustDate(inst,
(e.ctrlKey ? +1 : +inst._get('stepMonths')), (e.ctrlKey ? 'Y' : 'M'));
break; // next month/year on page down/+ ctrl
case 35: if (e.ctrlKey) $.datepicker._clearDate(inst);
break; // clear on ctrl+end
case 36: if (e.ctrlKey) $.datepicker._gotoToday(inst);
break; // current on ctrl+home
case 37: if (e.ctrlKey) $.datepicker._adjustDate(inst, -1, 'D');
break; // -1 day on ctrl+left
case 38: if (e.ctrlKey) $.datepicker._adjustDate(inst, -7, 'D');
break; // -1 week on ctrl+up
case 39: if (e.ctrlKey) $.datepicker._adjustDate(inst, +1, 'D');
break; // +1 day on ctrl+right
case 40: if (e.ctrlKey) $.datepicker._adjustDate(inst, +7, 'D');
break; // +1 week on ctrl+down
}
}
else if (e.keyCode == 36 && e.ctrlKey) { // display the date picker on ctrl+home
$.datepicker.showFor(this);
}
},
/* Filter entered characters - based on date format. */
_doKeyPress: function(e) {
var inst = $.datepicker._getInst(this._calId);
var chars = $.datepicker._possibleChars(inst._get('dateFormat'));
var chr = String.fromCharCode(e.charCode == undefined ? e.keyCode : e.charCode);
return (chr < ' ' || !chars || chars.indexOf(chr) > -1);
},
/* Attach the date picker to an input field. */
_connectDatepicker: function(target, inst) {
var input = $(target);
if (this._hasClass(input, this.markerClassName)) {
return;
}
var appendText = inst._get('appendText');
var isRTL = inst._get('isRTL');
if (appendText) {
if (isRTL) {
input.before('' + appendText + '');
}
else {
input.after('' + appendText + '');
}
}
var showOn = inst._get('showOn');
if (showOn == 'focus' || showOn == 'both') { // pop-up date picker when in the marked field
input.focus(this.showFor);
}
if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
var buttonText = inst._get('buttonText');
var buttonImage = inst._get('buttonImage');
var buttonImageOnly = inst._get('buttonImageOnly');
var trigger = $(buttonImageOnly ? '' :
'');
input.wrap('');
if (isRTL) {
input.before(trigger);
}
else {
input.after(trigger);
}
trigger.click(this.showFor);
}
input.addClass(this.markerClassName).keydown(this._doKeyDown).keypress(this._doKeyPress);
input.bind("setData.datepicker", function(event, key, value) {
inst._settings[key] = value;
}).bind("getData.datepicker", function(event, key) {
return inst._get(key);
});
input[0]._calId = inst._id;
},
/* Attach an inline date picker to a div. */
_inlineDatepicker: function(target, inst) {
var input = $(target);
if (this._hasClass(input, this.markerClassName)) {
return;
}
input.addClass(this.markerClassName).append(inst._datepickerDiv);
input.bind("setData.datepicker", function(event, key, value) {
inst._settings[key] = value;
}).bind("getData.datepicker", function(event, key) {
return inst._get(key);
});
input[0]._calId = inst._id;
this._updateDatepicker(inst);
/* @todo: fix _inlineShow automatic resizing
- Endless loop bug in IE6.
- inst._datepickerDiv.resize doesn't ever fire in firefox. */
// inst._datepickerDiv.resize(function() { $.datepicker._inlineShow(inst); });
},
/* Tidy up after displaying the date picker. */
_inlineShow: function(inst) {
var numMonths = inst._getNumberOfMonths(); // fix width for dynamic number of date pickers
inst._datepickerDiv.width(numMonths[1] * $('.datepicker', inst._datepickerDiv[0]).width());
},
/* Does this element have a particular class? */
_hasClass: function(element, className) {
var classes = element.attr('class');
return (classes && classes.indexOf(className) > -1);
},
/* Pop-up the date picker in a "dialog" box.
@param dateText string - the initial date to display (in the current format)
@param onSelect function - the function(dateText) 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(dateText, onSelect, settings, pos) {
var inst = this._dialogInst; // internal instance
if (!inst) {
inst = this._dialogInst = new DatepickerInstance({}, false);
this._dialogInput = $('');
this._dialogInput.keydown(this._doKeyDown);
$('body').append(this._dialogInput);
this._dialogInput[0]._calId = inst._id;
}
extendRemove(inst._settings, settings || {});
this._dialogInput.val(dateText);
this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
if (!this._pos) {
var browserWidth = window.innerWidth || document.documentElement.clientWidth ||
document.body.clientWidth;
var browserHeight = window.innerHeight || document.documentElement.clientHeight ||
document.body.clientHeight;
var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
this._pos = // should use actual width/height below
[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
}
// move input on screen for focus, but hidden behind dialog
this._dialogInput.css('left', this._pos[0] + 'px').css('top', this._pos[1] + 'px');
inst._settings.onSelect = onSelect;
this._inDialog = true;
this._datepickerDiv.addClass('datepicker_dialog');
this.showFor(this._dialogInput[0]);
if ($.blockUI) {
$.blockUI(this._datepickerDiv);
}
return this;
},
/* Pop-up the date picker for a given input field.
@param control element - the input field attached to the date picker or
string - the ID or other jQuery selector of the input field or
object - jQuery object for input field
@return the manager object */
showFor: function(control) {
control = (control.jquery ? control[0] :
(typeof control == 'string' ? $(control)[0] : control));
var input = (control.nodeName && control.nodeName.toLowerCase() == 'input' ? control : this);
if (input.nodeName.toLowerCase() != 'input') { // find from button/image trigger
input = $('input', input.parentNode)[0];
}
if ($.datepicker._lastInput == input) { // already here
return;
}
if ($(input).isDisabledDatepicker()) {
return;
}
var inst = $.datepicker._getInst(input._calId);
var beforeShow = inst._get('beforeShow');
extendRemove(inst._settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
$.datepicker.hideDatepicker('');
$.datepicker._lastInput = input;
inst._setDateFromField(input);
if ($.datepicker._inDialog) { // hide cursor
input.value = '';
}
if (!$.datepicker._pos) { // position below input
$.datepicker._pos = $.datepicker._findPos(input);
$.datepicker._pos[1] += input.offsetHeight; // add the height
}
var isFixed = false;
$(input).parents().each(function() {
isFixed |= $(this).css('position') == 'fixed';
});
if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
$.datepicker._pos[0] -= document.documentElement.scrollLeft;
$.datepicker._pos[1] -= document.documentElement.scrollTop;
}
inst._datepickerDiv.css('position', ($.datepicker._inDialog && $.blockUI ?
'static' : (isFixed ? 'fixed' : 'absolute'))).
css('left', $.datepicker._pos[0] + 'px').css('top', $.datepicker._pos[1] + 'px');
$.datepicker._pos = null;
$.datepicker._showDatepicker(inst);
return this;
},
/* Construct and display the date picker. */
_showDatepicker: function(id) {
var inst = this._getInst(id);
inst._rangeStart = null;
this._updateDatepicker(inst);
if (!inst._inline) {
var speed = inst._get('speed');
var postProcess = function() {
$.datepicker._datepickerShowing = true;
$.datepicker._afterShow(inst);
};
var showAnim = inst._get('showAnim') || 'show';
var onShow = inst._get('onShow');
if (onShow !== undefined) {
onShow();
}
inst._datepickerDiv[showAnim](speed, postProcess);
if (speed == '') {
postProcess();
}
if (inst._input[0].type != 'hidden') {
inst._input[0].focus();
}
this._curInst = inst;
}
},
/* Generate the date picker content. */
_updateDatepicker: function(inst) {
inst._datepickerDiv.empty().append(inst._generateDatepicker());
var numMonths = inst._getNumberOfMonths();
if (numMonths[0] != 1 || numMonths[1] != 1) {
inst._datepickerDiv.addClass('datepicker_multi');
}
else {
inst._datepickerDiv.removeClass('datepicker_multi');
}
if (inst._get('isRTL')) {
inst._datepickerDiv.addClass('datepicker_rtl');
}
else {
inst._datepickerDiv.removeClass('datepicker_rtl');
}
if (inst._input && inst._input[0].type != 'hidden') {
inst._input[0].focus();
}
},
/* Tidy up after displaying the date picker. */
_afterShow: function(inst) {
var numMonths = inst._getNumberOfMonths(); // fix width for dynamic number of date pickers
inst._datepickerDiv.width(numMonths[1] * $('.datepicker', inst._datepickerDiv[0]).width());
if ($.browser.msie && parseInt($.browser.version) < 7) { // fix IE < 7 select problems
$('#datepicker_cover').css({ width: inst._datepickerDiv.width() + 4,
height: inst._datepickerDiv.height() + 4
});
}
// re-position on screen if necessary
var isFixed = inst._datepickerDiv.css('position') == 'fixed';
var pos = inst._input ? $.datepicker._findPos(inst._input[0]) : null;
var browserWidth = window.innerWidth || document.documentElement.clientWidth ||
document.body.clientWidth;
var browserHeight = window.innerHeight || document.documentElement.clientHeight ||
document.body.clientHeight;
var scrollX = (isFixed ? 0 : document.documentElement.scrollLeft || document.body.scrollLeft);
var scrollY = (isFixed ? 0 : document.documentElement.scrollTop || document.body.scrollTop);
// reposition date picker horizontally if outside the browser window
if ((inst._datepickerDiv.offset().left + inst._datepickerDiv.width() -
(isFixed && $.browser.msie ? document.documentElement.scrollLeft : 0)) >
(browserWidth + scrollX)) {
inst._datepickerDiv.css('left', Math.max(scrollX,
pos[0] + (inst._input ? $(inst._input[0]).width() : null) - inst._datepickerDiv.width() -
(isFixed && $.browser.opera ? document.documentElement.scrollLeft : 0)) + 'px');
}
// reposition date picker vertically if outside the browser window
if ((inst._datepickerDiv.offset().top + inst._datepickerDiv.height() -
(isFixed && $.browser.msie ? document.documentElement.scrollTop : 0)) >
(browserHeight + scrollY)) {
inst._datepickerDiv.css('top', Math.max(scrollY,
pos[1] - (this._inDialog ? 0 : inst._datepickerDiv.height()) -
(isFixed && $.browser.opera ? document.documentElement.scrollTop : 0)) + 'px');
}
},
/* Find an object's position on the screen. */
_findPos: function(obj) {
while (obj && (obj.type == 'hidden' || obj.nodeType != 1)) {
obj = obj.nextSibling;
}
var curleft = curtop = 0;
if (obj && obj.offsetParent) {
curleft = obj.offsetLeft;
curtop = obj.offsetTop;
while (obj = obj.offsetParent) {
var origcurleft = curleft;
curleft += obj.offsetLeft;
if (curleft < 0) {
curleft = origcurleft;
}
curtop += obj.offsetTop;
}
}
return [curleft, curtop];
},
/* Hide the date picker from view.
@param speed string - the speed at which to close the date picker
@return void */
hideDatepicker: function(speed) {
var inst = this._curInst;
if (!inst) {
return;
}
var rangeSelect = inst._get('rangeSelect');
if (rangeSelect && this._stayOpen) {
this._selectDate(inst, inst._formatDate(
inst._currentDay, inst._currentMonth, inst._currentYear));
}
this._stayOpen = false;
if (this._datepickerShowing) {
speed = (speed != null ? speed : inst._get('speed'));
inst._datepickerDiv.hide(speed, function() {
$.datepicker._tidyDialog(inst);
});
if (speed == '') {
this._tidyDialog(inst);
}
this._datepickerShowing = false;
this._lastInput = null;
inst._settings.prompt = null;
var onHide = inst._get('onHide');
if (onHide !== undefined) {
onHide();
}
if (this._inDialog) {
this._dialogInput.css('position', 'absolute').
css('left', '0px').css('top', '-100px');
if ($.blockUI) {
$.unblockUI();
$('body').append(this._datepickerDiv);
}
}
this._inDialog = false;
}
this._curInst = null;
},
/* Tidy up after a dialog display. */
_tidyDialog: function(inst) {
inst._datepickerDiv.removeClass('datepicker_dialog')
.unbind(".datepicker");
$('.datepicker_prompt', inst._datepickerDiv).remove();
},
/* Close date picker if clicked elsewhere. */
_checkExternalClick: function(event) {
if (!$.datepicker._curInst) {
return;
}
var target = $(event.target);
if ((target.parents("#datepicker_div").length == 0) &&
(target.attr('class') != 'datepicker_trigger') &&
$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI)) {
$.datepicker.hideDatepicker('');
}
},
/* Adjust one of the date sub-fields. */
_adjustDate: function(id, offset, period) {
var inst = this._getInst(id);
inst._adjustDate(offset, period);
this._updateDatepicker(inst);
},
/* Action for current link. */
_gotoToday: function(id) {
var date = new Date();
var inst = this._getInst(id);
inst._selectedDay = date.getDate();
inst._selectedMonth = date.getMonth();
inst._selectedYear = date.getFullYear();
this._adjustDate(inst);
},
/* Action for selecting a new month/year. */
_selectMonthYear: function(id, select, period) {
var inst = this._getInst(id);
inst._selectingMonthYear = false;
inst[period == 'M' ? '_selectedMonth' : '_selectedYear'] =
select.options[select.selectedIndex].value - 0;
this._adjustDate(inst);
},
/* Restore input focus after not changing month/year. */
_clickMonthYear: function(id) {
var inst = this._getInst(id);
if (inst._input && inst._selectingMonthYear && !$.browser.msie) {
inst._input[0].focus();
}
inst._selectingMonthYear = !inst._selectingMonthYear;
},
/* Action for changing the first week day. */
_changeFirstDay: function(id, day) {
var inst = this._getInst(id);
inst._settings.firstDay = day;
this._updateDatepicker(inst);
},
/* Action for selecting a day. */
_selectDay: function(id, month, year, td) {
if (this._hasClass($(td), 'datepicker_unselectable')) {
return;
}
var inst = this._getInst(id);
var rangeSelect = inst._get('rangeSelect');
if (rangeSelect) {
if (!this._stayOpen) {
$('.datepicker td').removeClass('datepicker_currentDay');
$(td).addClass('datepicker_currentDay');
}
this._stayOpen = !this._stayOpen;
}
inst._currentDay = $('a', td).html();
inst._currentMonth = month;
inst._currentYear = year;
this._selectDate(id, inst._formatDate(
inst._currentDay, inst._currentMonth, inst._currentYear));
if (this._stayOpen) {
inst._endDay = inst._endMonth = inst._endYear = null;
inst._rangeStart = new Date(inst._currentYear, inst._currentMonth, inst._currentDay);
this._updateDatepicker(inst);
}
else if (rangeSelect) {
inst._endDay = inst._currentDay;
inst._endMonth = inst._currentMonth;
inst._endYear = inst._currentYear;
inst._selectedDay = inst._currentDay = inst._rangeStart.getDate();
inst._selectedMonth = inst._currentMonth = inst._rangeStart.getMonth();
inst._selectedYear = inst._currentYear = inst._rangeStart.getFullYear();
inst._rangeStart = null;
if (inst._inline) {
this._updateDatepicker(inst);
}
}
},
/* Erase the input field and hide the date picker. */
_clearDate: function(id) {
var inst = this._getInst(id);
this._stayOpen = false;
inst._endDay = inst._endMonth = inst._endYear = inst._rangeStart = null;
this._selectDate(inst, '');
},
/* Update the input field with the selected date. */
_selectDate: function(id, dateStr) {
var inst = this._getInst(id);
dateStr = (dateStr != null ? dateStr : inst._formatDate());
if (inst._rangeStart) {
dateStr = inst._formatDate(inst._rangeStart) + inst._get('rangeSeparator') + dateStr;
}
if (inst._input) {
inst._input.val(dateStr);
}
var onSelect = inst._get('onSelect');
if (onSelect) {
onSelect.apply((inst._input ? inst._input[0] : null), [dateStr, inst]); // trigger custom callback
}
else {
if (inst._input) {
inst._input.trigger('change'); // fire the change event
}
}
if (inst._inline) {
this._updateDatepicker(inst);
}
else {
if (!this._stayOpen) {
this.hideDatepicker(inst._get('speed'));
this._lastInput = inst._input[0];
if (typeof (inst._input[0]) != 'object') {
inst._input[0].focus(); // restore focus
}
this._lastInput = null;
}
}
},
/* Set as beforeShowDay function to prevent selection of weekends.
@param date Date - the date to customise
@return [boolean, string] - is this date selectable?, what is its CSS class? */
noWeekends: function(date) {
var day = date.getDay();
return [(day > 0 && day < 6), ''];
},
/* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
@param date Date - the date to get the week for
@return number - the number of the week within the year that contains this date */
iso8601Week: function(date) {
var checkDate = new Date(date.getFullYear(), date.getMonth(), date.getDate());
var firstMon = new Date(checkDate.getFullYear(), 1 - 1, 4); // First week always contains 4 Jan
var firstDay = firstMon.getDay() || 7; // Day of week: Mon = 1, ..., Sun = 7
firstMon.setDate(firstMon.getDate() + 1 - firstDay); // Preceding Monday
if (firstDay < 4 && checkDate < firstMon) { // Adjust first three days in year if necessary
checkDate.setDate(checkDate.getDate() - 3); // Generate for previous year
return $.datepicker.iso8601Week(checkDate);
}
else if (checkDate > new Date(checkDate.getFullYear(), 12 - 1, 28)) { // Check last three days in year
firstDay = new Date(checkDate.getFullYear() + 1, 1 - 1, 4).getDay() || 7;
if (firstDay > 4 && (checkDate.getDay() || 7) < firstDay - 3) { // Adjust if necessary
checkDate.setDate(checkDate.getDate() + 3); // Generate for next year
return $.datepicker.iso8601Week(checkDate);
}
}
return Math.floor(((checkDate - firstMon) / 86400000) / 7) + 1; // Weeks to given date
},
/* Provide status text for a particular date.
@param date the date to get the status for
@param inst the current datepicker instance
@return the status display text for this date */
dateStatus: function(date, inst) {
return $.datepicker.formatDate(inst._get('dateStatus'), date, inst._getFormatConfig());
},
/* Parse a string value into a date object.
The format can be combinations of the following:
d - day of month (no leading zero)
dd - day of month (two digit)
D - day name short
DD - day name long
m - month of year (no leading zero)
mm - month of year (two digit)
M - month name short
MM - month name long
y - year (two digit)
yy - year (four digit)
'...' - literal text
'' - single quote
@param format String - the expected format of the date
@param value String - the date in the above format
@param settings Object - attributes include:
shortYearCutoff Number - the cutoff year for determining the century (optional)
dayNamesShort String[7] - abbreviated names of the days from Sunday (optional)
dayNames String[7] - names of the days from Sunday (optional)
monthNamesShort String[12] - abbreviated names of the months (optional)
monthNames String[12] - names of the months (optional)
@return Date - the extracted date value or null if value is blank */
parseDate: function(format, value, settings) {
if (format == null || value == null) {
throw 'Invalid arguments';
}
// format = dateFormats[format] || format;
value = (typeof value == 'object' ? value.toString() : value + '');
if (value == '') {
return null;
}
var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
var year = -1;
var month = -1;
var day = -1;
var literal = false;
// Check whether a format character is doubled
var lookAhead = function(match) {
var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
if (matches) {
iFormat++;
}
return matches;
};
// Extract a number from the string value
var getNumber = function(match) {
lookAhead(match);
var size = (match == 'y' ? 4 : 2);
var num = 0;
while (size > 0 && iValue < value.length &&
value.charAt(iValue) >= '0' && value.charAt(iValue) <= '9') {
num = num * 10 + (value.charAt(iValue++) - 0);
size--;
}
if (size == (match == 'y' ? 4 : 2)) {
throw 'Missing number at position ' + iValue;
}
return num;
};
// Extract a name from the string value and convert to an index
var getName = function(match, shortNames, longNames) {
var names = (lookAhead(match) ? longNames : shortNames);
var size = 0;
for (var j = 0; j < names.length; j++) {
size = Math.max(size, names[j].length);
}
var name = '';
var iInit = iValue;
while (size > 0 && iValue < value.length) {
name += value.charAt(iValue++);
for (var i = 0; i < names.length; i++) {
if (name == names[i]) {
return i + 1;
}
}
size--;
}
throw 'Unknown name at position ' + iInit;
};
// Confirm that a literal character matches the string value
var checkLiteral = function() {
if (value.charAt(iValue) != format.charAt(iFormat)) {
throw 'Unexpected literal at position ' + iValue;
}
iValue++;
};
var iValue = 0;
for (var iFormat = 0; iFormat < format.length; iFormat++) {
if (literal) {
if (format.charAt(iFormat) == '\'' && !lookAhead('\'')) {
literal = false;
}
else {
checkLiteral();
}
}
else {
switch (format.charAt(iFormat)) {
case 'd':
day = getNumber('d');
break;
case 'D':
getName('D', dayNamesShort, dayNames);
break;
case 'm':
month = getNumber('m');
break;
case 'M':
month = getName('M', monthNamesShort, monthNames);
break;
case 'y':
year = getNumber('y');
break;
case '\'':
if (lookAhead('\'')) {
checkLiteral();
}
else {
literal = true;
}
break;
default:
checkLiteral();
}
}
}
if (year < 100) {
year += new Date().getFullYear() - new Date().getFullYear() % 100 +
(year <= shortYearCutoff ? 0 : -100);
}
var date = new Date(year, month - 1, day);
if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day) {
throw 'Invalid date'; // E.g. 31/02/*
}
return date;
},
/* Format a date object into a string value.
The format can be combinations of the following:
d - day of month (no leading zero)
dd - day of month (two digit)
D - day name short
DD - day name long
m - month of year (no leading zero)
mm - month of year (two digit)
M - month name short
MM - month name long
y - year (two digit)
yy - year (four digit)
'...' - literal text
'' - single quote
@param format String - the desired format of the date
@param date Date - the date value to format
@param settings Object - attributes include:
dayNamesShort String[7] - abbreviated names of the days from Sunday (optional)
dayNames String[7] - names of the days from Sunday (optional)
monthNamesShort String[12] - abbreviated names of the months (optional)
monthNames String[12] - names of the months (optional)
@return String - the date in the above format */
formatDate: function(format, date, settings) {
if (!date) {
return '';
}
// format = dateFormats[format] || format;
var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
// Check whether a format character is doubled
var lookAhead = function(match) {
var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
if (matches) {
iFormat++;
}
return matches;
};
// Format a number, with leading zero if necessary
var formatNumber = function(match, value) {
return (lookAhead(match) && value < 10 ? '0' : '') + value;
};
// Format a name, short or long as requested
var formatName = function(match, value, shortNames, longNames) {
return (lookAhead(match) ? longNames[value] : shortNames[value]);
};
var output = '';
var literal = false;
if (date) {
for (var iFormat = 0; iFormat < format.length; iFormat++) {
if (literal) {
if (format.charAt(iFormat) == '\'' && !lookAhead('\'')) {
literal = false;
}
else {
output += format.charAt(iFormat);
}
}
else {
switch (format.charAt(iFormat)) {
case 'd':
output += formatNumber('d', date.getDate());
break;
case 'D':
output += formatName('D', date.getDay(), dayNamesShort, dayNames);
break;
case 'm':
output += formatNumber('m', date.getMonth() + 1);
break;
case 'M':
output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
break;
case 'y':
output += (lookAhead('y') ? date.getFullYear() :
(date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
break;
case '\'':
if (lookAhead('\'')) {
output += '\'';
}
else {
literal = true;
}
break;
default:
output += format.charAt(iFormat);
}
}
}
}
return output;
},
/* Extract all possible characters from the date format. */
_possibleChars: function(format) {
// format = dateFormats[format] || format;
var chars = '';
var literal = false;
for (var iFormat = 0; iFormat < format.length; iFormat++) {
if (literal) {
if (format.charAt(iFormat) == '\'' && !lookAhead('\'')) {
literal = false;
}
else {
chars += format.charAt(iFormat);
}
}
else {
switch (format.charAt(iFormat)) {
case 'd':
case 'm':
case 'y':
chars += '0123456789';
break;
case 'D':
case 'M':
return null; // Accept anything
case '\'':
if (lookAhead('\'')) {
chars += '\'';
}
else {
literal = true;
}
break;
default:
chars += format.charAt(iFormat);
}
}
}
return chars;
}
});
/* Individualised settings for date picker functionality applied to one or more related inputs.
Instances are managed and manipulated through the Datepicker manager. */
function DatepickerInstance(settings, inline) {
this._id = $.datepicker._register(this);
this._selectedDay = 0;
this._selectedMonth = 0; // 0-11
this._selectedYear = 0; // 4-digit year
this._input = null; // The attached input field
this._inline = inline; // True if showing inline, false if used in a popup
this._datepickerDiv = (!inline ? $.datepicker._datepickerDiv :
$(''));
// customise the date picker object - uses manager defaults if not overridden
this._settings = extendRemove({}, settings || {}); // clone
if (inline) {
this._setDate(this._getDefaultDate());
}
}
$.extend(DatepickerInstance.prototype, {
/* Get a setting value, defaulting if necessary. */
_get: function(name) {
return (this._settings[name] != null ? this._settings[name] : $.datepicker._defaults[name]);
},
/* Parse existing date and initialise date picker. */
_setDateFromField: function(input) {
this._input = $(input);
var dateFormat = this._get('dateFormat');
var dates = this._input ? this._input.val().split(this._get('rangeSeparator')) : null;
this._endDay = this._endMonth = this._endYear = null;
var date = defaultDate = this._getDefaultDate();
if (dates.length > 0) {
var settings = this._getFormatConfig();
if (dates.length > 1) {
date = $.datepicker.parseDate(dateFormat, dates[1], settings) || defaultDate;
this._endDay = date.getDate();
this._endMonth = date.getMonth();
this._endYear = date.getFullYear();
}
try {
date = $.datepicker.parseDate(dateFormat, dates[0], settings) || defaultDate;
}
catch (e) {
$.datepicker.log(e);
date = defaultDate;
}
}
this._selectedDay = this._currentDay = date.getDate();
this._selectedMonth = this._currentMonth = date.getMonth();
this._selectedYear = this._currentYear = date.getFullYear();
this._adjustDate();
},
/* Retrieve the default date shown on opening. */
_getDefaultDate: function() {
return this._determineDate('defaultDate', new Date());
},
/* A date may be specified as an exact value or a relative one. */
_determineDate: function(name, defaultDate) {
var offsetNumeric = function(offset) {
var date = new Date();
date.setDate(date.getDate() + offset);
return date;
};
var offsetString = function(offset, getDaysInMonth) {
var date = new Date();
var matches = /^([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?$/.exec(offset);
if (matches) {
var year = date.getFullYear();
var month = date.getMonth();
var day = date.getDate();
switch (matches[2] || 'd') {
case 'd': case 'D':
day += (matches[1] - 0); break;
case 'w': case 'W':
day += (matches[1] * 7); break;
case 'm': case 'M':
month += (matches[1] - 0);
day = Math.min(day, getDaysInMonth(year, month));
break;
case 'y': case 'Y':
year += (matches[1] - 0);
day = Math.min(day, getDaysInMonth(year, month));
break;
}
date = new Date(year, month, day);
}
return date;
};
var date = this._get(name);
return (date == null ? defaultDate :
(typeof date == 'string' ? offsetString(date, this._getDaysInMonth) :
(typeof date == 'number' ? offsetNumeric(date) : date)));
},
/* Set the date(s) directly. */
_setDate: function(date, endDate) {
this._selectedDay = this._currentDay = date.getDate();
this._selectedMonth = this._currentMonth = date.getMonth();
this._selectedYear = this._currentYear = date.getFullYear();
if (this._get('rangeSelect')) {
if (endDate) {
this._endDay = endDate.getDate();
this._endMonth = endDate.getMonth();
this._endYear = endDate.getFullYear();
}
else {
this._endDay = this._currentDay;
this._endMonth = this._currentMonth;
this._endYear = this._currentYear;
}
}
this._adjustDate();
},
/* Retrieve the date(s) directly. */
_getDate: function() {
var startDate = (!this._currentYear || (this._input && this._input.val() == '') ? null :
new Date(this._currentYear, this._currentMonth, this._currentDay));
if (this._get('rangeSelect')) {
return [startDate, (!this._endYear ? null :
new Date(this._endYear, this._endMonth, this._endDay))];
}
else {
return startDate;
}
},
/* Generate the HTML for the current state of the date picker. */
_generateDatepicker: function() {
var today = new Date();
today = new Date(today.getFullYear(), today.getMonth(), today.getDate()); // clear time
var showStatus = this._get('showStatus');
var isRTL = this._get('isRTL');
// build the date picker HTML
var clear = (this._get('mandatory') ? '' :
'
';
var showWeeks = this._get('showWeeks');
for (var row = 0; row < numMonths[0]; row++) {
for (var col = 0; col < numMonths[1]; col++) {
var selectedDate = new Date(drawYear, drawMonth, this._selectedDay);
html += '
';
// month selection
var monthNames = this._get('monthNames');
if (secondary || !this._get('changeMonth')) {
html += monthNames[drawMonth] + ' ';
}
else {
var inMinYear = (minDate && minDate.getFullYear() == drawYear);
var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
html += '';
}
// year selection
if (secondary || !this._get('changeYear')) {
html += drawYear;
}
else {
// determine range of years to display
var years = this._get('yearRange').split(':');
var year = 0;
var endYear = 0;
if (years.length != 2) {
year = drawYear - 10;
endYear = drawYear + 10;
}
else if (years[0].charAt(0) == '+' || years[0].charAt(0) == '-') {
year = drawYear + parseInt(years[0], 10);
endYear = drawYear + parseInt(years[1], 10);
}
else {
year = parseInt(years[0], 10);
endYear = parseInt(years[1], 10);
}
year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
html += '';
}
html += '
'; // Close datepicker_header
return html;
},
/* Provide code to set and clear the status panel. */
_addStatus: function(text) {
return ' onmouseover="jQuery(\'#datepicker_status_' + this._id + '\').html(\'' + text + '\');" ' +
'onmouseout="jQuery(\'#datepicker_status_' + this._id + '\').html(\' \');"';
},
/* Adjust one of the date sub-fields. */
_adjustDate: function(offset, period) {
var year = this._selectedYear + (period == 'Y' ? offset : 0);
var month = this._selectedMonth + (period == 'M' ? offset : 0);
var day = Math.min(this._selectedDay, this._getDaysInMonth(year, month)) +
(period == 'D' ? offset : 0);
var date = new Date(year, month, day);
// ensure it is within the bounds set
var minDate = this._getMinMaxDate('min', true);
var maxDate = this._getMinMaxDate('max');
date = (minDate && date < minDate ? minDate : date);
date = (maxDate && date > maxDate ? maxDate : date);
this._selectedDay = date.getDate();
this._selectedMonth = date.getMonth();
this._selectedYear = date.getFullYear();
},
/* Determine the number of months to show. */
_getNumberOfMonths: function() {
var numMonths = this._get('numberOfMonths');
return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
},
/* Determine the current maximum date - ensure no time components are set - may be overridden for a range. */
_getMinMaxDate: function(minMax, checkRange) {
var date = this._determineDate(minMax + 'Date', null);
if (date) {
date.setHours(0);
date.setMinutes(0);
date.setSeconds(0);
date.setMilliseconds(0);
}
return date || (checkRange ? this._rangeStart : null);
},
/* Find the number of days in a given month. */
_getDaysInMonth: function(year, month) {
return 32 - new Date(year, month, 32).getDate();
},
/* Find the day of the week of the first of a month. */
_getFirstDayOfMonth: function(year, month) {
return new Date(year, month, 1).getDay();
},
/* Determines if we should allow a "next/prev" month display change. */
_canAdjustMonth: function(offset, curYear, curMonth) {
var numMonths = this._getNumberOfMonths();
var date = new Date(curYear, curMonth + (offset < 0 ? offset : numMonths[1]), 1);
if (offset < 0) {
date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
}
return this._isInRange(date);
},
/* Is the given date in the accepted range? */
_isInRange: function(date) {
// during range selection, use minimum of selected date and range start
var newMinDate = (!this._rangeStart ? null :
new Date(this._selectedYear, this._selectedMonth, this._selectedDay));
newMinDate = (newMinDate && this._rangeStart < newMinDate ? this._rangeStart : newMinDate);
var minDate = newMinDate || this._getMinMaxDate('min');
var maxDate = this._getMinMaxDate('max');
return ((!minDate || date >= minDate) && (!maxDate || date <= maxDate));
},
/* Provide the configuration settings for formatting/parsing. */
_getFormatConfig: function() {
var shortYearCutoff = this._get('shortYearCutoff');
shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
return { shortYearCutoff: shortYearCutoff,
dayNamesShort: this._get('dayNamesShort'), dayNames: this._get('dayNames'),
monthNamesShort: this._get('monthNamesShort'), monthNames: this._get('monthNames')
};
},
/* Format the given date for display. */
_formatDate: function(day, month, year) {
if (!day) {
this._currentDay = this._selectedDay;
this._currentMonth = this._selectedMonth;
this._currentYear = this._selectedYear;
}
var date = (day ? (typeof day == 'object' ? day : new Date(year, month, day)) :
new Date(this._currentYear, this._currentMonth, this._currentDay));
return $.datepicker.formatDate(this._get('dateFormat'), date, this._getFormatConfig());
}
});
/* jQuery extend now ignores nulls! */
function extendRemove(target, props) {
$.extend(target, props);
for (var name in props) {
if (props[name] == null) {
target[name] = null;
}
}
return target;
};
$.fn.datepicker = function(options) {
var args = Array.prototype.slice.call(arguments, 1);
return typeof options == "string" ?
this[options + "Datepicker"].apply(this, args) :
this.attachDatepicker(options);
};
// Deprecated, use .datepicker(settings)
/* Attach the date picker to a jQuery selection.
@param settings object - the new settings to use for this date picker instance (anonymous)
@return jQuery object - for chaining further calls */
$.fn.attachDatepicker = function(settings) {
return this.each(function() {
// check for settings on the control itself - in namespace 'date:'
var inlineSettings = null;
for (attrName in $.datepicker._defaults) {
var attrValue = this.getAttribute('date:' + attrName);
if (attrValue) {
inlineSettings = inlineSettings || {};
try {
inlineSettings[attrName] = eval(attrValue);
}
catch (err) {
inlineSettings[attrName] = attrValue;
}
}
}
var nodeName = this.nodeName.toLowerCase();
if (nodeName == 'input') {
var instSettings = (inlineSettings ? $.extend($.extend({}, settings || {}),
inlineSettings || {}) : settings); // clone and customise
var inst = (inst && !inlineSettings ? inst :
new DatepickerInstance(instSettings, false));
$.datepicker._connectDatepicker(this, inst);
}
else if (nodeName == 'div' || nodeName == 'span') {
var instSettings = $.extend($.extend({}, settings || {}),
inlineSettings || {}); // clone and customise
var inst = new DatepickerInstance(instSettings, true);
$.datepicker._inlineDatepicker(this, inst);
}
});
};
// Deprecated, use .datepicker("remove")
/* Detach a datepicker from its control.
@return jQuery object - for chaining further calls */
$.fn.removeDatepicker = function() {
var jq = this.each(function() {
var $this = $(this);
var nodeName = this.nodeName.toLowerCase();
var calId = this._calId;
this._calId = null;
if (nodeName == 'input') {
$this.siblings('.datepicker_append').replaceWith('');
$this.siblings('.datepicker_trigger').replaceWith('');
$this.removeClass($.datepicker.markerClassName).
unbind('focus', $.datepicker.showFor).
unbind('keydown', $.datepicker._doKeyDown).
unbind('keypress', $.datepicker._doKeyPress);
var wrapper = $this.parents('.datepicker_wrap');
if (wrapper) {
wrapper.replaceWith(wrapper.html());
}
}
else if (nodeName == 'div' || nodeName == 'span') {
$this.removeClass($.datepicker.markerClassName).empty();
}
if ($('input[_calId=' + calId + ']').length == 0) {
// clean up if last for this ID
$.datepicker._inst[calId] = null;
}
});
if ($('input.hasDatepicker').length == 0) {
// clean up if last input
$.datepicker._datepickerDiv.replaceWith('');
}
return jq;
};
// Deprecated, use .datepicker("enable")
/* Enable the date picker to a jQuery selection.
@return jQuery object - for chaining further calls */
$.fn.enableDatepicker = function() {
return this.each(function() {
this.disabled = false;
$(this).siblings('button.datepicker_trigger').each(function() { this.disabled = false; });
$(this).siblings('img.datepicker_trigger').css({ opacity: '1.0', cursor: '' });
var $this = this;
$.datepicker._disabledInputs = $.map($.datepicker._disabledInputs,
function(value) { return (value == $this ? null : value); }); // delete entry
});
};
// Deprecated, use .datepicker("disable")
/* Disable the date picker to a jQuery selection.
@return jQuery object - for chaining further calls */
$.fn.disableDatepicker = function() {
return this.each(function() {
this.disabled = true;
$(this).siblings('button.datepicker_trigger').each(function() { this.disabled = true; });
$(this).siblings('img.datepicker_trigger').css({ opacity: '0.5', cursor: 'default' });
var $this = this;
$.datepicker._disabledInputs = $.map($.datepicker._disabledInputs,
function(value) { return (value == $this ? null : value); }); // delete entry
$.datepicker._disabledInputs[$.datepicker._disabledInputs.length] = this;
});
};
// Deprecated, use .datepicker("isDisabled")
/* Is the first field in a jQuery collection disabled as a datepicker?
@return boolean - true if disabled, false if enabled */
$.fn.isDisabledDatepicker = function() {
if (this.length == 0) {
return false;
}
for (var i = 0; i < $.datepicker._disabledInputs.length; i++) {
if ($.datepicker._disabledInputs[i] == this[0]) {
return true;
}
}
return false;
};
// Deprecated, use .datepicker("change", name, value)
/* Update the settings for a date picker attached to an input field or division.
@param name string - the name of the setting to change
object - the new settings to update
@param value any - the new value for the setting (omit if above is a map)
@return jQuery object - for chaining further calls */
$.fn.changeDatepicker = function(name, value) {
var settings = name || {};
if (typeof name == 'string') {
settings = {};
settings[name] = value;
}
return this.each(function() {
var inst = $.datepicker._getInst(this._calId);
if (inst) {
extendRemove(inst._settings, settings);
$.datepicker._updateDatepicker(inst);
}
});
};
// Deprecated, use .datepicker("show")
/* Show the date picker attached to the first entry in a jQuery selection.
@return jQuery object - for chaining further calls */
$.fn.showDatepicker = function() {
$.datepicker.showFor(this);
return this;
};
/* Set the dates for a jQuery selection.
@param date Date - the new date
@param endDate Date - the new end date for a range (optional)
@return jQuery object - for chaining further calls */
$.fn.setDatepickerDate = function(date, endDate) {
return this.each(function() {
var inst = $.datepicker._getInst(this._calId);
if (inst) {
inst._setDate(date, endDate);
$.datepicker._updateDatepicker(inst);
}
});
};
/* Get the date(s) for the first entry in a jQuery selection.
@return Date - the current date or
Date[2] - the current dates for a range*/
$.fn.getDatepickerDate = function() {
var inst = (this.length > 0 ? $.datepicker._getInst(this[0]._calId) : null);
return (inst ? inst._getDate() : null);
};
/* Initialise the date picker. */
$(document).ready(function() {
$.datepicker = new Datepicker(); // singleton instance
$(document.body).append($.datepicker._datepickerDiv).
mousedown($.datepicker._checkExternalClick);
});
})(jQuery);