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40 aurelien 1
/*
2
 * jQuery UI Datepicker 1.8.5
3
 *
4
 * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
5
 * Dual licensed under the MIT or GPL Version 2 licenses.
6
 * http://jquery.org/license
7
 *
8
 * http://docs.jquery.com/UI/Datepicker
9
 *
10
 * Depends:
11
 *	jquery.ui.core.js
12
 */
13
(function( $, undefined ) {
14
 
15
$.extend($.ui, { datepicker: { version: "1.8.5" } });
16
 
17
var PROP_NAME = 'datepicker';
18
var dpuuid = new Date().getTime();
19
 
20
/* Date picker manager.
21
   Use the singleton instance of this class, $.datepicker, to interact with the date picker.
22
   Settings for (groups of) date pickers are maintained in an instance object,
23
   allowing multiple different settings on the same page. */
24
 
25
function Datepicker() {
26
	this.debug = false; // Change this to true to start debugging
27
	this._curInst = null; // The current instance in use
28
	this._keyEvent = false; // If the last event was a key event
29
	this._disabledInputs = []; // List of date picker inputs that have been disabled
30
	this._datepickerShowing = false; // True if the popup picker is showing , false if not
31
	this._inDialog = false; // True if showing within a "dialog", false if not
32
	this._mainDivId = 'ui-datepicker-div'; // The ID of the main datepicker division
33
	this._inlineClass = 'ui-datepicker-inline'; // The name of the inline marker class
34
	this._appendClass = 'ui-datepicker-append'; // The name of the append marker class
35
	this._triggerClass = 'ui-datepicker-trigger'; // The name of the trigger marker class
36
	this._dialogClass = 'ui-datepicker-dialog'; // The name of the dialog marker class
37
	this._disableClass = 'ui-datepicker-disabled'; // The name of the disabled covering marker class
38
	this._unselectableClass = 'ui-datepicker-unselectable'; // The name of the unselectable cell marker class
39
	this._currentClass = 'ui-datepicker-current-day'; // The name of the current day marker class
40
	this._dayOverClass = 'ui-datepicker-days-cell-over'; // The name of the day hover marker class
41
	this.regional = []; // Available regional settings, indexed by language code
42
	this.regional[''] = { // Default regional settings
43
		closeText: 'Done', // Display text for close link
44
		prevText: 'Prev', // Display text for previous month link
45
		nextText: 'Next', // Display text for next month link
46
		currentText: 'Today', // Display text for current month link
47
		monthNames: ['January','February','March','April','May','June',
48
			'July','August','September','October','November','December'], // Names of months for drop-down and formatting
49
		monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], // For formatting
50
		dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // For formatting
51
		dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], // For formatting
52
		dayNamesMin: ['Su','Mo','Tu','We','Th','Fr','Sa'], // Column headings for days starting at Sunday
53
		weekHeader: 'Wk', // Column header for week of the year
54
		dateFormat: 'mm/dd/yy', // See format options on parseDate
55
		firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
56
		isRTL: false, // True if right-to-left language, false if left-to-right
57
		showMonthAfterYear: false, // True if the year select precedes month, false for month then year
58
		yearSuffix: '' // Additional text to append to the year in the month headers
59
	};
60
	this._defaults = { // Global defaults for all the date picker instances
61
		showOn: 'focus', // 'focus' for popup on focus,
62
			// 'button' for trigger button, or 'both' for either
63
		showAnim: 'fadeIn', // Name of jQuery animation for popup
64
		showOptions: {}, // Options for enhanced animations
65
		defaultDate: null, // Used when field is blank: actual date,
66
			// +/-number for offset from today, null for today
67
		appendText: '', // Display text following the input box, e.g. showing the format
68
		buttonText: '...', // Text for trigger button
69
		buttonImage: '', // URL for trigger button image
70
		buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
71
		hideIfNoPrevNext: false, // True to hide next/previous month links
72
			// if not applicable, false to just disable them
73
		navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
74
		gotoCurrent: false, // True if today link goes back to current selection instead
75
		changeMonth: false, // True if month can be selected directly, false if only prev/next
76
		changeYear: false, // True if year can be selected directly, false if only prev/next
77
		yearRange: 'c-10:c+10', // Range of years to display in drop-down,
78
			// either relative to today's year (-nn:+nn), relative to currently displayed year
79
			// (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
80
		showOtherMonths: false, // True to show dates in other months, false to leave blank
81
		selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
82
		showWeek: false, // True to show week of the year, false to not show it
83
		calculateWeek: this.iso8601Week, // How to calculate the week of the year,
84
			// takes a Date and returns the number of the week for it
85
		shortYearCutoff: '+10', // Short year values < this are in the current century,
86
			// > this are in the previous century,
87
			// string value starting with '+' for current year + value
88
		minDate: null, // The earliest selectable date, or null for no limit
89
		maxDate: null, // The latest selectable date, or null for no limit
90
		duration: 'fast', // Duration of display/closure
91
		beforeShowDay: null, // Function that takes a date and returns an array with
92
			// [0] = true if selectable, false if not, [1] = custom CSS class name(s) or '',
93
			// [2] = cell title (optional), e.g. $.datepicker.noWeekends
94
		beforeShow: null, // Function that takes an input field and
95
			// returns a set of custom settings for the date picker
96
		onSelect: null, // Define a callback function when a date is selected
97
		onChangeMonthYear: null, // Define a callback function when the month or year is changed
98
		onClose: null, // Define a callback function when the datepicker is closed
99
		numberOfMonths: 1, // Number of months to show at a time
100
		showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
101
		stepMonths: 1, // Number of months to step back/forward
102
		stepBigMonths: 12, // Number of months to step back/forward for the big links
103
		altField: '', // Selector for an alternate field to store selected dates into
104
		altFormat: '', // The date format to use for the alternate field
105
		constrainInput: true, // The input is constrained by the current date format
106
		showButtonPanel: false, // True to show button panel, false to not show it
107
		autoSize: false // True to size the input for the date format, false to leave as is
108
	};
109
	$.extend(this._defaults, this.regional['']);
110
	this.dpDiv = $('<div id="' + this._mainDivId + '" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all ui-helper-hidden-accessible"></div>');
111
}
112
 
113
$.extend(Datepicker.prototype, {
114
	/* Class name added to elements to indicate already configured with a date picker. */
115
	markerClassName: 'hasDatepicker',
116
 
117
	/* Debug logging (if enabled). */
118
	log: function () {
119
		if (this.debug)
120
			console.log.apply('', arguments);
121
	},
122
 
123
	// TODO rename to "widget" when switching to widget factory
124
	_widgetDatepicker: function() {
125
		return this.dpDiv;
126
	},
127
 
128
	/* Override the default settings for all instances of the date picker.
129
	   @param  settings  object - the new settings to use as defaults (anonymous object)
130
	   @return the manager object */
131
	setDefaults: function(settings) {
132
		extendRemove(this._defaults, settings || {});
133
		return this;
134
	},
135
 
136
	/* Attach the date picker to a jQuery selection.
137
	   @param  target    element - the target input field or division or span
138
	   @param  settings  object - the new settings to use for this date picker instance (anonymous) */
139
	_attachDatepicker: function(target, settings) {
140
		// check for settings on the control itself - in namespace 'date:'
141
		var inlineSettings = null;
142
		for (var attrName in this._defaults) {
143
			var attrValue = target.getAttribute('date:' + attrName);
144
			if (attrValue) {
145
				inlineSettings = inlineSettings || {};
146
				try {
147
					inlineSettings[attrName] = eval(attrValue);
148
				} catch (err) {
149
					inlineSettings[attrName] = attrValue;
150
				}
151
			}
152
		}
153
		var nodeName = target.nodeName.toLowerCase();
154
		var inline = (nodeName == 'div' || nodeName == 'span');
155
		if (!target.id) {
156
			this.uuid += 1;
157
			target.id = 'dp' + this.uuid;
158
		}
159
		var inst = this._newInst($(target), inline);
160
		inst.settings = $.extend({}, settings || {}, inlineSettings || {});
161
		if (nodeName == 'input') {
162
			this._connectDatepicker(target, inst);
163
		} else if (inline) {
164
			this._inlineDatepicker(target, inst);
165
		}
166
	},
167
 
168
	/* Create a new instance object. */
169
	_newInst: function(target, inline) {
170
		var id = target[0].id.replace(/([^A-Za-z0-9_])/g, '\\\\$1'); // escape jQuery meta chars
171
		return {id: id, input: target, // associated target
172
			selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
173
			drawMonth: 0, drawYear: 0, // month being drawn
174
			inline: inline, // is datepicker inline or not
175
			dpDiv: (!inline ? this.dpDiv : // presentation div
176
			$('<div class="' + this._inlineClass + ' ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>'))};
177
	},
178
 
179
	/* Attach the date picker to an input field. */
180
	_connectDatepicker: function(target, inst) {
181
		var input = $(target);
182
		inst.append = $([]);
183
		inst.trigger = $([]);
184
		if (input.hasClass(this.markerClassName))
185
			return;
186
		this._attachments(input, inst);
187
		input.addClass(this.markerClassName).keydown(this._doKeyDown).
188
			keypress(this._doKeyPress).keyup(this._doKeyUp).
189
			bind("setData.datepicker", function(event, key, value) {
190
				inst.settings[key] = value;
191
			}).bind("getData.datepicker", function(event, key) {
192
				return this._get(inst, key);
193
			});
194
		this._autoSize(inst);
195
		$.data(target, PROP_NAME, inst);
196
	},
197
 
198
	/* Make attachments based on settings. */
199
	_attachments: function(input, inst) {
200
		var appendText = this._get(inst, 'appendText');
201
		var isRTL = this._get(inst, 'isRTL');
202
		if (inst.append)
203
			inst.append.remove();
204
		if (appendText) {
205
			inst.append = $('<span class="' + this._appendClass + '">' + appendText + '</span>');
206
			input[isRTL ? 'before' : 'after'](inst.append);
207
		}
208
		input.unbind('focus', this._showDatepicker);
209
		if (inst.trigger)
210
			inst.trigger.remove();
211
		var showOn = this._get(inst, 'showOn');
212
		if (showOn == 'focus' || showOn == 'both') // pop-up date picker when in the marked field
213
			input.focus(this._showDatepicker);
214
		if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
215
			var buttonText = this._get(inst, 'buttonText');
216
			var buttonImage = this._get(inst, 'buttonImage');
217
			inst.trigger = $(this._get(inst, 'buttonImageOnly') ?
218
				$('<img/>').addClass(this._triggerClass).
219
					attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
220
				$('<button type="button"></button>').addClass(this._triggerClass).
221
					html(buttonImage == '' ? buttonText : $('<img/>').attr(
222
					{ src:buttonImage, alt:buttonText, title:buttonText })));
223
			input[isRTL ? 'before' : 'after'](inst.trigger);
224
			inst.trigger.click(function() {
225
				if ($.datepicker._datepickerShowing && $.datepicker._lastInput == input[0])
226
					$.datepicker._hideDatepicker();
227
				else
228
					$.datepicker._showDatepicker(input[0]);
229
				return false;
230
			});
231
		}
232
	},
233
 
234
	/* Apply the maximum length for the date format. */
235
	_autoSize: function(inst) {
236
		if (this._get(inst, 'autoSize') && !inst.inline) {
237
			var date = new Date(2009, 12 - 1, 20); // Ensure double digits
238
			var dateFormat = this._get(inst, 'dateFormat');
239
			if (dateFormat.match(/[DM]/)) {
240
				var findMax = function(names) {
241
					var max = 0;
242
					var maxI = 0;
243
					for (var i = 0; i < names.length; i++) {
244
						if (names[i].length > max) {
245
							max = names[i].length;
246
							maxI = i;
247
						}
248
					}
249
					return maxI;
250
				};
251
				date.setMonth(findMax(this._get(inst, (dateFormat.match(/MM/) ?
252
					'monthNames' : 'monthNamesShort'))));
253
				date.setDate(findMax(this._get(inst, (dateFormat.match(/DD/) ?
254
					'dayNames' : 'dayNamesShort'))) + 20 - date.getDay());
255
			}
256
			inst.input.attr('size', this._formatDate(inst, date).length);
257
		}
258
	},
259
 
260
	/* Attach an inline date picker to a div. */
261
	_inlineDatepicker: function(target, inst) {
262
		var divSpan = $(target);
263
		if (divSpan.hasClass(this.markerClassName))
264
			return;
265
		divSpan.addClass(this.markerClassName).append(inst.dpDiv).
266
			bind("setData.datepicker", function(event, key, value){
267
				inst.settings[key] = value;
268
			}).bind("getData.datepicker", function(event, key){
269
				return this._get(inst, key);
270
			});
271
		$.data(target, PROP_NAME, inst);
272
		this._setDate(inst, this._getDefaultDate(inst), true);
273
		this._updateDatepicker(inst);
274
		this._updateAlternate(inst);
275
	},
276
 
277
	/* Pop-up the date picker in a "dialog" box.
278
	   @param  input     element - ignored
279
	   @param  date      string or Date - the initial date to display
280
	   @param  onSelect  function - the function to call when a date is selected
281
	   @param  settings  object - update the dialog date picker instance's settings (anonymous object)
282
	   @param  pos       int[2] - coordinates for the dialog's position within the screen or
283
	                     event - with x/y coordinates or
284
	                     leave empty for default (screen centre)
285
	   @return the manager object */
286
	_dialogDatepicker: function(input, date, onSelect, settings, pos) {
287
		var inst = this._dialogInst; // internal instance
288
		if (!inst) {
289
			this.uuid += 1;
290
			var id = 'dp' + this.uuid;
291
			this._dialogInput = $('<input type="text" id="' + id +
292
				'" style="position: absolute; top: -100px; width: 0px; z-index: -10;"/>');
293
			this._dialogInput.keydown(this._doKeyDown);
294
			$('body').append(this._dialogInput);
295
			inst = this._dialogInst = this._newInst(this._dialogInput, false);
296
			inst.settings = {};
297
			$.data(this._dialogInput[0], PROP_NAME, inst);
298
		}
299
		extendRemove(inst.settings, settings || {});
300
		date = (date && date.constructor == Date ? this._formatDate(inst, date) : date);
301
		this._dialogInput.val(date);
302
 
303
		this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
304
		if (!this._pos) {
305
			var browserWidth = document.documentElement.clientWidth;
306
			var browserHeight = document.documentElement.clientHeight;
307
			var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
308
			var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
309
			this._pos = // should use actual width/height below
310
				[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
311
		}
312
 
313
		// move input on screen for focus, but hidden behind dialog
314
		this._dialogInput.css('left', (this._pos[0] + 20) + 'px').css('top', this._pos[1] + 'px');
315
		inst.settings.onSelect = onSelect;
316
		this._inDialog = true;
317
		this.dpDiv.addClass(this._dialogClass);
318
		this._showDatepicker(this._dialogInput[0]);
319
		if ($.blockUI)
320
			$.blockUI(this.dpDiv);
321
		$.data(this._dialogInput[0], PROP_NAME, inst);
322
		return this;
323
	},
324
 
325
	/* Detach a datepicker from its control.
326
	   @param  target    element - the target input field or division or span */
327
	_destroyDatepicker: function(target) {
328
		var $target = $(target);
329
		var inst = $.data(target, PROP_NAME);
330
		if (!$target.hasClass(this.markerClassName)) {
331
			return;
332
		}
333
		var nodeName = target.nodeName.toLowerCase();
334
		$.removeData(target, PROP_NAME);
335
		if (nodeName == 'input') {
336
			inst.append.remove();
337
			inst.trigger.remove();
338
			$target.removeClass(this.markerClassName).
339
				unbind('focus', this._showDatepicker).
340
				unbind('keydown', this._doKeyDown).
341
				unbind('keypress', this._doKeyPress).
342
				unbind('keyup', this._doKeyUp);
343
		} else if (nodeName == 'div' || nodeName == 'span')
344
			$target.removeClass(this.markerClassName).empty();
345
	},
346
 
347
	/* Enable the date picker to a jQuery selection.
348
	   @param  target    element - the target input field or division or span */
349
	_enableDatepicker: function(target) {
350
		var $target = $(target);
351
		var inst = $.data(target, PROP_NAME);
352
		if (!$target.hasClass(this.markerClassName)) {
353
			return;
354
		}
355
		var nodeName = target.nodeName.toLowerCase();
356
		if (nodeName == 'input') {
357
			target.disabled = false;
358
			inst.trigger.filter('button').
359
				each(function() { this.disabled = false; }).end().
360
				filter('img').css({opacity: '1.0', cursor: ''});
361
		}
362
		else if (nodeName == 'div' || nodeName == 'span') {
363
			var inline = $target.children('.' + this._inlineClass);
364
			inline.children().removeClass('ui-state-disabled');
365
		}
366
		this._disabledInputs = $.map(this._disabledInputs,
367
			function(value) { return (value == target ? null : value); }); // delete entry
368
	},
369
 
370
	/* Disable the date picker to a jQuery selection.
371
	   @param  target    element - the target input field or division or span */
372
	_disableDatepicker: function(target) {
373
		var $target = $(target);
374
		var inst = $.data(target, PROP_NAME);
375
		if (!$target.hasClass(this.markerClassName)) {
376
			return;
377
		}
378
		var nodeName = target.nodeName.toLowerCase();
379
		if (nodeName == 'input') {
380
			target.disabled = true;
381
			inst.trigger.filter('button').
382
				each(function() { this.disabled = true; }).end().
383
				filter('img').css({opacity: '0.5', cursor: 'default'});
384
		}
385
		else if (nodeName == 'div' || nodeName == 'span') {
386
			var inline = $target.children('.' + this._inlineClass);
387
			inline.children().addClass('ui-state-disabled');
388
		}
389
		this._disabledInputs = $.map(this._disabledInputs,
390
			function(value) { return (value == target ? null : value); }); // delete entry
391
		this._disabledInputs[this._disabledInputs.length] = target;
392
	},
393
 
394
	/* Is the first field in a jQuery collection disabled as a datepicker?
395
	   @param  target    element - the target input field or division or span
396
	   @return boolean - true if disabled, false if enabled */
397
	_isDisabledDatepicker: function(target) {
398
		if (!target) {
399
			return false;
400
		}
401
		for (var i = 0; i < this._disabledInputs.length; i++) {
402
			if (this._disabledInputs[i] == target)
403
				return true;
404
		}
405
		return false;
406
	},
407
 
408
	/* Retrieve the instance data for the target control.
409
	   @param  target  element - the target input field or division or span
410
	   @return  object - the associated instance data
411
	   @throws  error if a jQuery problem getting data */
412
	_getInst: function(target) {
413
		try {
414
			return $.data(target, PROP_NAME);
415
		}
416
		catch (err) {
417
			throw 'Missing instance data for this datepicker';
418
		}
419
	},
420
 
421
	/* Update or retrieve the settings for a date picker attached to an input field or division.
422
	   @param  target  element - the target input field or division or span
423
	   @param  name    object - the new settings to update or
424
	                   string - the name of the setting to change or retrieve,
425
	                   when retrieving also 'all' for all instance settings or
426
	                   'defaults' for all global defaults
427
	   @param  value   any - the new value for the setting
428
	                   (omit if above is an object or to retrieve a value) */
429
	_optionDatepicker: function(target, name, value) {
430
		var inst = this._getInst(target);
431
		if (arguments.length == 2 && typeof name == 'string') {
432
			return (name == 'defaults' ? $.extend({}, $.datepicker._defaults) :
433
				(inst ? (name == 'all' ? $.extend({}, inst.settings) :
434
				this._get(inst, name)) : null));
435
		}
436
		var settings = name || {};
437
		if (typeof name == 'string') {
438
			settings = {};
439
			settings[name] = value;
440
		}
441
		if (inst) {
442
			if (this._curInst == inst) {
443
				this._hideDatepicker();
444
			}
445
			var date = this._getDateDatepicker(target, true);
446
			extendRemove(inst.settings, settings);
447
			this._attachments($(target), inst);
448
			this._autoSize(inst);
449
			this._setDateDatepicker(target, date);
450
			this._updateDatepicker(inst);
451
		}
452
	},
453
 
454
	// change method deprecated
455
	_changeDatepicker: function(target, name, value) {
456
		this._optionDatepicker(target, name, value);
457
	},
458
 
459
	/* Redraw the date picker attached to an input field or division.
460
	   @param  target  element - the target input field or division or span */
461
	_refreshDatepicker: function(target) {
462
		var inst = this._getInst(target);
463
		if (inst) {
464
			this._updateDatepicker(inst);
465
		}
466
	},
467
 
468
	/* Set the dates for a jQuery selection.
469
	   @param  target   element - the target input field or division or span
470
	   @param  date     Date - the new date */
471
	_setDateDatepicker: function(target, date) {
472
		var inst = this._getInst(target);
473
		if (inst) {
474
			this._setDate(inst, date);
475
			this._updateDatepicker(inst);
476
			this._updateAlternate(inst);
477
		}
478
	},
479
 
480
	/* Get the date(s) for the first entry in a jQuery selection.
481
	   @param  target     element - the target input field or division or span
482
	   @param  noDefault  boolean - true if no default date is to be used
483
	   @return Date - the current date */
484
	_getDateDatepicker: function(target, noDefault) {
485
		var inst = this._getInst(target);
486
		if (inst && !inst.inline)
487
			this._setDateFromField(inst, noDefault);
488
		return (inst ? this._getDate(inst) : null);
489
	},
490
 
491
	/* Handle keystrokes. */
492
	_doKeyDown: function(event) {
493
		var inst = $.datepicker._getInst(event.target);
494
		var handled = true;
495
		var isRTL = inst.dpDiv.is('.ui-datepicker-rtl');
496
		inst._keyEvent = true;
497
		if ($.datepicker._datepickerShowing)
498
			switch (event.keyCode) {
499
				case 9: $.datepicker._hideDatepicker();
500
						handled = false;
501
						break; // hide on tab out
502
				case 13: var sel = $('td.' + $.datepicker._dayOverClass, inst.dpDiv).
503
							add($('td.' + $.datepicker._currentClass, inst.dpDiv));
504
						if (sel[0])
505
							$.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
506
						else
507
							$.datepicker._hideDatepicker();
508
						return false; // don't submit the form
509
						break; // select the value on enter
510
				case 27: $.datepicker._hideDatepicker();
511
						break; // hide on escape
512
				case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
513
							-$.datepicker._get(inst, 'stepBigMonths') :
514
							-$.datepicker._get(inst, 'stepMonths')), 'M');
515
						break; // previous month/year on page up/+ ctrl
516
				case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
517
							+$.datepicker._get(inst, 'stepBigMonths') :
518
							+$.datepicker._get(inst, 'stepMonths')), 'M');
519
						break; // next month/year on page down/+ ctrl
520
				case 35: if (event.ctrlKey || event.metaKey) $.datepicker._clearDate(event.target);
521
						handled = event.ctrlKey || event.metaKey;
522
						break; // clear on ctrl or command +end
523
				case 36: if (event.ctrlKey || event.metaKey) $.datepicker._gotoToday(event.target);
524
						handled = event.ctrlKey || event.metaKey;
525
						break; // current on ctrl or command +home
526
				case 37: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
527
						handled = event.ctrlKey || event.metaKey;
528
						// -1 day on ctrl or command +left
529
						if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
530
									-$.datepicker._get(inst, 'stepBigMonths') :
531
									-$.datepicker._get(inst, 'stepMonths')), 'M');
532
						// next month/year on alt +left on Mac
533
						break;
534
				case 38: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, -7, 'D');
535
						handled = event.ctrlKey || event.metaKey;
536
						break; // -1 week on ctrl or command +up
537
				case 39: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), 'D');
538
						handled = event.ctrlKey || event.metaKey;
539
						// +1 day on ctrl or command +right
540
						if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
541
									+$.datepicker._get(inst, 'stepBigMonths') :
542
									+$.datepicker._get(inst, 'stepMonths')), 'M');
543
						// next month/year on alt +right
544
						break;
545
				case 40: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, +7, 'D');
546
						handled = event.ctrlKey || event.metaKey;
547
						break; // +1 week on ctrl or command +down
548
				default: handled = false;
549
			}
550
		else if (event.keyCode == 36 && event.ctrlKey) // display the date picker on ctrl+home
551
			$.datepicker._showDatepicker(this);
552
		else {
553
			handled = false;
554
		}
555
		if (handled) {
556
			event.preventDefault();
557
			event.stopPropagation();
558
		}
559
	},
560
 
561
	/* Filter entered characters - based on date format. */
562
	_doKeyPress: function(event) {
563
		var inst = $.datepicker._getInst(event.target);
564
		if ($.datepicker._get(inst, 'constrainInput')) {
565
			var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
566
			var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
567
			return event.ctrlKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
568
		}
569
	},
570
 
571
	/* Synchronise manual entry and field/alternate field. */
572
	_doKeyUp: function(event) {
573
		var inst = $.datepicker._getInst(event.target);
574
		if (inst.input.val() != inst.lastVal) {
575
			try {
576
				var date = $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
577
					(inst.input ? inst.input.val() : null),
578
					$.datepicker._getFormatConfig(inst));
579
				if (date) { // only if valid
580
					$.datepicker._setDateFromField(inst);
581
					$.datepicker._updateAlternate(inst);
582
					$.datepicker._updateDatepicker(inst);
583
				}
584
			}
585
			catch (event) {
586
				$.datepicker.log(event);
587
			}
588
		}
589
		return true;
590
	},
591
 
592
	/* Pop-up the date picker for a given input field.
593
	   @param  input  element - the input field attached to the date picker or
594
	                  event - if triggered by focus */
595
	_showDatepicker: function(input) {
596
		input = input.target || input;
597
		if (input.nodeName.toLowerCase() != 'input') // find from button/image trigger
598
			input = $('input', input.parentNode)[0];
599
		if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput == input) // already here
600
			return;
601
		var inst = $.datepicker._getInst(input);
602
		if ($.datepicker._curInst && $.datepicker._curInst != inst) {
603
			$.datepicker._curInst.dpDiv.stop(true, true);
604
		}
605
		var beforeShow = $.datepicker._get(inst, 'beforeShow');
606
		extendRemove(inst.settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
607
		inst.lastVal = null;
608
		$.datepicker._lastInput = input;
609
		$.datepicker._setDateFromField(inst);
610
		if ($.datepicker._inDialog) // hide cursor
611
			input.value = '';
612
		if (!$.datepicker._pos) { // position below input
613
			$.datepicker._pos = $.datepicker._findPos(input);
614
			$.datepicker._pos[1] += input.offsetHeight; // add the height
615
		}
616
		var isFixed = false;
617
		$(input).parents().each(function() {
618
			isFixed |= $(this).css('position') == 'fixed';
619
			return !isFixed;
620
		});
621
		if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
622
			$.datepicker._pos[0] -= document.documentElement.scrollLeft;
623
			$.datepicker._pos[1] -= document.documentElement.scrollTop;
624
		}
625
		var offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
626
		$.datepicker._pos = null;
627
		// determine sizing offscreen
628
		inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
629
		$.datepicker._updateDatepicker(inst);
630
		// fix width for dynamic number of date pickers
631
		// and adjust position before showing
632
		offset = $.datepicker._checkOffset(inst, offset, isFixed);
633
		inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
634
			'static' : (isFixed ? 'fixed' : 'absolute')), display: 'none',
635
			left: offset.left + 'px', top: offset.top + 'px'});
636
		if (!inst.inline) {
637
			var showAnim = $.datepicker._get(inst, 'showAnim');
638
			var duration = $.datepicker._get(inst, 'duration');
639
			var postProcess = function() {
640
				$.datepicker._datepickerShowing = true;
641
				var borders = $.datepicker._getBorders(inst.dpDiv);
642
				inst.dpDiv.find('iframe.ui-datepicker-cover'). // IE6- only
643
					css({left: -borders[0], top: -borders[1],
644
						width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()});
645
			};
646
			inst.dpDiv.zIndex($(input).zIndex()+1);
647
			if ($.effects && $.effects[showAnim])
648
				inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
649
			else
650
				inst.dpDiv[showAnim || 'show']((showAnim ? duration : null), postProcess);
651
			if (!showAnim || !duration)
652
				postProcess();
653
			if (inst.input.is(':visible') && !inst.input.is(':disabled'))
654
				inst.input.focus();
655
			$.datepicker._curInst = inst;
656
		}
657
	},
658
 
659
	/* Generate the date picker content. */
660
	_updateDatepicker: function(inst) {
661
		var self = this;
662
		var borders = $.datepicker._getBorders(inst.dpDiv);
663
		inst.dpDiv.empty().append(this._generateHTML(inst))
664
			.find('iframe.ui-datepicker-cover') // IE6- only
665
				.css({left: -borders[0], top: -borders[1],
666
					width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()})
667
			.end()
668
			.find('button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a')
669
				.bind('mouseout', function(){
670
					$(this).removeClass('ui-state-hover');
671
					if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
672
					if(this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
673
				})
674
				.bind('mouseover', function(){
675
					if (!self._isDisabledDatepicker( inst.inline ? inst.dpDiv.parent()[0] : inst.input[0])) {
676
						$(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
677
						$(this).addClass('ui-state-hover');
678
						if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
679
						if(this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
680
					}
681
				})
682
			.end()
683
			.find('.' + this._dayOverClass + ' a')
684
				.trigger('mouseover')
685
			.end();
686
		var numMonths = this._getNumberOfMonths(inst);
687
		var cols = numMonths[1];
688
		var width = 17;
689
		if (cols > 1)
690
			inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
691
		else
692
			inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
693
		inst.dpDiv[(numMonths[0] != 1 || numMonths[1] != 1 ? 'add' : 'remove') +
694
			'Class']('ui-datepicker-multi');
695
		inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
696
			'Class']('ui-datepicker-rtl');
697
		if (inst == $.datepicker._curInst && $.datepicker._datepickerShowing && inst.input &&
698
				inst.input.is(':visible') && !inst.input.is(':disabled'))
699
			inst.input.focus();
700
	},
701
 
702
	/* Retrieve the size of left and top borders for an element.
703
	   @param  elem  (jQuery object) the element of interest
704
	   @return  (number[2]) the left and top borders */
705
	_getBorders: function(elem) {
706
		var convert = function(value) {
707
			return {thin: 1, medium: 2, thick: 3}[value] || value;
708
		};
709
		return [parseFloat(convert(elem.css('border-left-width'))),
710
			parseFloat(convert(elem.css('border-top-width')))];
711
	},
712
 
713
	/* Check positioning to remain on screen. */
714
	_checkOffset: function(inst, offset, isFixed) {
715
		var dpWidth = inst.dpDiv.outerWidth();
716
		var dpHeight = inst.dpDiv.outerHeight();
717
		var inputWidth = inst.input ? inst.input.outerWidth() : 0;
718
		var inputHeight = inst.input ? inst.input.outerHeight() : 0;
719
		var viewWidth = document.documentElement.clientWidth + $(document).scrollLeft();
720
		var viewHeight = document.documentElement.clientHeight + $(document).scrollTop();
721
 
722
		offset.left -= (this._get(inst, 'isRTL') ? (dpWidth - inputWidth) : 0);
723
		offset.left -= (isFixed && offset.left == inst.input.offset().left) ? $(document).scrollLeft() : 0;
724
		offset.top -= (isFixed && offset.top == (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;
725
 
726
		// now check if datepicker is showing outside window viewport - move to a better place if so.
727
		offset.left -= Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ?
728
			Math.abs(offset.left + dpWidth - viewWidth) : 0);
729
		offset.top -= Math.min(offset.top, (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ?
730
			Math.abs(dpHeight + inputHeight) : 0);
731
 
732
		return offset;
733
	},
734
 
735
	/* Find an object's position on the screen. */
736
	_findPos: function(obj) {
737
		var inst = this._getInst(obj);
738
		var isRTL = this._get(inst, 'isRTL');
739
        while (obj && (obj.type == 'hidden' || obj.nodeType != 1)) {
740
            obj = obj[isRTL ? 'previousSibling' : 'nextSibling'];
741
        }
742
        var position = $(obj).offset();
743
	    return [position.left, position.top];
744
	},
745
 
746
	/* Hide the date picker from view.
747
	   @param  input  element - the input field attached to the date picker */
748
	_hideDatepicker: function(input) {
749
		var inst = this._curInst;
750
		if (!inst || (input && inst != $.data(input, PROP_NAME)))
751
			return;
752
		if (this._datepickerShowing) {
753
			var showAnim = this._get(inst, 'showAnim');
754
			var duration = this._get(inst, 'duration');
755
			var postProcess = function() {
756
				$.datepicker._tidyDialog(inst);
757
				this._curInst = null;
758
			};
759
			if ($.effects && $.effects[showAnim])
760
				inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
761
			else
762
				inst.dpDiv[(showAnim == 'slideDown' ? 'slideUp' :
763
					(showAnim == 'fadeIn' ? 'fadeOut' : 'hide'))]((showAnim ? duration : null), postProcess);
764
			if (!showAnim)
765
				postProcess();
766
			var onClose = this._get(inst, 'onClose');
767
			if (onClose)
768
				onClose.apply((inst.input ? inst.input[0] : null),
769
					[(inst.input ? inst.input.val() : ''), inst]);  // trigger custom callback
770
			this._datepickerShowing = false;
771
			this._lastInput = null;
772
			if (this._inDialog) {
773
				this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
774
				if ($.blockUI) {
775
					$.unblockUI();
776
					$('body').append(this.dpDiv);
777
				}
778
			}
779
			this._inDialog = false;
780
		}
781
	},
782
 
783
	/* Tidy up after a dialog display. */
784
	_tidyDialog: function(inst) {
785
		inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker-calendar');
786
	},
787
 
788
	/* Close date picker if clicked elsewhere. */
789
	_checkExternalClick: function(event) {
790
		if (!$.datepicker._curInst)
791
			return;
792
		var $target = $(event.target);
793
		if ($target[0].id != $.datepicker._mainDivId &&
794
				$target.parents('#' + $.datepicker._mainDivId).length == 0 &&
795
				!$target.hasClass($.datepicker.markerClassName) &&
796
				!$target.hasClass($.datepicker._triggerClass) &&
797
				$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))
798
			$.datepicker._hideDatepicker();
799
	},
800
 
801
	/* Adjust one of the date sub-fields. */
802
	_adjustDate: function(id, offset, period) {
803
		var target = $(id);
804
		var inst = this._getInst(target[0]);
805
		if (this._isDisabledDatepicker(target[0])) {
806
			return;
807
		}
808
		this._adjustInstDate(inst, offset +
809
			(period == 'M' ? this._get(inst, 'showCurrentAtPos') : 0), // undo positioning
810
			period);
811
		this._updateDatepicker(inst);
812
	},
813
 
814
	/* Action for current link. */
815
	_gotoToday: function(id) {
816
		var target = $(id);
817
		var inst = this._getInst(target[0]);
818
		if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
819
			inst.selectedDay = inst.currentDay;
820
			inst.drawMonth = inst.selectedMonth = inst.currentMonth;
821
			inst.drawYear = inst.selectedYear = inst.currentYear;
822
		}
823
		else {
824
			var date = new Date();
825
			inst.selectedDay = date.getDate();
826
			inst.drawMonth = inst.selectedMonth = date.getMonth();
827
			inst.drawYear = inst.selectedYear = date.getFullYear();
828
		}
829
		this._notifyChange(inst);
830
		this._adjustDate(target);
831
	},
832
 
833
	/* Action for selecting a new month/year. */
834
	_selectMonthYear: function(id, select, period) {
835
		var target = $(id);
836
		var inst = this._getInst(target[0]);
837
		inst._selectingMonthYear = false;
838
		inst['selected' + (period == 'M' ? 'Month' : 'Year')] =
839
		inst['draw' + (period == 'M' ? 'Month' : 'Year')] =
840
			parseInt(select.options[select.selectedIndex].value,10);
841
		this._notifyChange(inst);
842
		this._adjustDate(target);
843
	},
844
 
845
	/* Restore input focus after not changing month/year. */
846
	_clickMonthYear: function(id) {
847
		var target = $(id);
848
		var inst = this._getInst(target[0]);
849
		if (inst.input && inst._selectingMonthYear) {
850
			setTimeout(function() {
851
				inst.input.focus();
852
			}, 0);
853
		}
854
		inst._selectingMonthYear = !inst._selectingMonthYear;
855
	},
856
 
857
	/* Action for selecting a day. */
858
	_selectDay: function(id, month, year, td) {
859
		var target = $(id);
860
		if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
861
			return;
862
		}
863
		var inst = this._getInst(target[0]);
864
		inst.selectedDay = inst.currentDay = $('a', td).html();
865
		inst.selectedMonth = inst.currentMonth = month;
866
		inst.selectedYear = inst.currentYear = year;
867
		this._selectDate(id, this._formatDate(inst,
868
			inst.currentDay, inst.currentMonth, inst.currentYear));
869
	},
870
 
871
	/* Erase the input field and hide the date picker. */
872
	_clearDate: function(id) {
873
		var target = $(id);
874
		var inst = this._getInst(target[0]);
875
		this._selectDate(target, '');
876
	},
877
 
878
	/* Update the input field with the selected date. */
879
	_selectDate: function(id, dateStr) {
880
		var target = $(id);
881
		var inst = this._getInst(target[0]);
882
		dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
883
		if (inst.input)
884
			inst.input.val(dateStr);
885
		this._updateAlternate(inst);
886
		var onSelect = this._get(inst, 'onSelect');
887
		if (onSelect)
888
			onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
889
		else if (inst.input)
890
			inst.input.trigger('change'); // fire the change event
891
		if (inst.inline)
892
			this._updateDatepicker(inst);
893
		else {
894
			this._hideDatepicker();
895
			this._lastInput = inst.input[0];
896
			if (typeof(inst.input[0]) != 'object')
897
				inst.input.focus(); // restore focus
898
			this._lastInput = null;
899
		}
900
	},
901
 
902
	/* Update any alternate field to synchronise with the main field. */
903
	_updateAlternate: function(inst) {
904
		var altField = this._get(inst, 'altField');
905
		if (altField) { // update alternate field too
906
			var altFormat = this._get(inst, 'altFormat') || this._get(inst, 'dateFormat');
907
			var date = this._getDate(inst);
908
			var dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
909
			$(altField).each(function() { $(this).val(dateStr); });
910
		}
911
	},
912
 
913
	/* Set as beforeShowDay function to prevent selection of weekends.
914
	   @param  date  Date - the date to customise
915
	   @return [boolean, string] - is this date selectable?, what is its CSS class? */
916
	noWeekends: function(date) {
917
		var day = date.getDay();
918
		return [(day > 0 && day < 6), ''];
919
	},
920
 
921
	/* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
922
	   @param  date  Date - the date to get the week for
923
	   @return  number - the number of the week within the year that contains this date */
924
	iso8601Week: function(date) {
925
		var checkDate = new Date(date.getTime());
926
		// Find Thursday of this week starting on Monday
927
		checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));
928
		var time = checkDate.getTime();
929
		checkDate.setMonth(0); // Compare with Jan 1
930
		checkDate.setDate(1);
931
		return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
932
	},
933
 
934
	/* Parse a string value into a date object.
935
	   See formatDate below for the possible formats.
936
 
937
	   @param  format    string - the expected format of the date
938
	   @param  value     string - the date in the above format
939
	   @param  settings  Object - attributes include:
940
	                     shortYearCutoff  number - the cutoff year for determining the century (optional)
941
	                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
942
	                     dayNames         string[7] - names of the days from Sunday (optional)
943
	                     monthNamesShort  string[12] - abbreviated names of the months (optional)
944
	                     monthNames       string[12] - names of the months (optional)
945
	   @return  Date - the extracted date value or null if value is blank */
946
	parseDate: function (format, value, settings) {
947
		if (format == null || value == null)
948
			throw 'Invalid arguments';
949
		value = (typeof value == 'object' ? value.toString() : value + '');
950
		if (value == '')
951
			return null;
952
		var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
953
		var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
954
		var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
955
		var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
956
		var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
957
		var year = -1;
958
		var month = -1;
959
		var day = -1;
960
		var doy = -1;
961
		var literal = false;
962
		// Check whether a format character is doubled
963
		var lookAhead = function(match) {
964
			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
965
			if (matches)
966
				iFormat++;
967
			return matches;
968
		};
969
		// Extract a number from the string value
970
		var getNumber = function(match) {
971
			lookAhead(match);
972
			var size = (match == '@' ? 14 : (match == '!' ? 20 :
973
				(match == 'y' ? 4 : (match == 'o' ? 3 : 2))));
974
			var digits = new RegExp('^\\d{1,' + size + '}');
975
			var num = value.substring(iValue).match(digits);
976
			if (!num)
977
				throw 'Missing number at position ' + iValue;
978
			iValue += num[0].length;
979
			return parseInt(num[0], 10);
980
		};
981
		// Extract a name from the string value and convert to an index
982
		var getName = function(match, shortNames, longNames) {
983
			var names = (lookAhead(match) ? longNames : shortNames);
984
			for (var i = 0; i < names.length; i++) {
985
				if (value.substr(iValue, names[i].length).toLowerCase() == names[i].toLowerCase()) {
986
					iValue += names[i].length;
987
					return i + 1;
988
				}
989
			}
990
			throw 'Unknown name at position ' + iValue;
991
		};
992
		// Confirm that a literal character matches the string value
993
		var checkLiteral = function() {
994
			if (value.charAt(iValue) != format.charAt(iFormat))
995
				throw 'Unexpected literal at position ' + iValue;
996
			iValue++;
997
		};
998
		var iValue = 0;
999
		for (var iFormat = 0; iFormat < format.length; iFormat++) {
1000
			if (literal)
1001
				if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1002
					literal = false;
1003
				else
1004
					checkLiteral();
1005
			else
1006
				switch (format.charAt(iFormat)) {
1007
					case 'd':
1008
						day = getNumber('d');
1009
						break;
1010
					case 'D':
1011
						getName('D', dayNamesShort, dayNames);
1012
						break;
1013
					case 'o':
1014
						doy = getNumber('o');
1015
						break;
1016
					case 'm':
1017
						month = getNumber('m');
1018
						break;
1019
					case 'M':
1020
						month = getName('M', monthNamesShort, monthNames);
1021
						break;
1022
					case 'y':
1023
						year = getNumber('y');
1024
						break;
1025
					case '@':
1026
						var date = new Date(getNumber('@'));
1027
						year = date.getFullYear();
1028
						month = date.getMonth() + 1;
1029
						day = date.getDate();
1030
						break;
1031
					case '!':
1032
						var date = new Date((getNumber('!') - this._ticksTo1970) / 10000);
1033
						year = date.getFullYear();
1034
						month = date.getMonth() + 1;
1035
						day = date.getDate();
1036
						break;
1037
					case "'":
1038
						if (lookAhead("'"))
1039
							checkLiteral();
1040
						else
1041
							literal = true;
1042
						break;
1043
					default:
1044
						checkLiteral();
1045
				}
1046
		}
1047
		if (year == -1)
1048
			year = new Date().getFullYear();
1049
		else if (year < 100)
1050
			year += new Date().getFullYear() - new Date().getFullYear() % 100 +
1051
				(year <= shortYearCutoff ? 0 : -100);
1052
		if (doy > -1) {
1053
			month = 1;
1054
			day = doy;
1055
			do {
1056
				var dim = this._getDaysInMonth(year, month - 1);
1057
				if (day <= dim)
1058
					break;
1059
				month++;
1060
				day -= dim;
1061
			} while (true);
1062
		}
1063
		var date = this._daylightSavingAdjust(new Date(year, month - 1, day));
1064
		if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day)
1065
			throw 'Invalid date'; // E.g. 31/02/*
1066
		return date;
1067
	},
1068
 
1069
	/* Standard date formats. */
1070
	ATOM: 'yy-mm-dd', // RFC 3339 (ISO 8601)
1071
	COOKIE: 'D, dd M yy',
1072
	ISO_8601: 'yy-mm-dd',
1073
	RFC_822: 'D, d M y',
1074
	RFC_850: 'DD, dd-M-y',
1075
	RFC_1036: 'D, d M y',
1076
	RFC_1123: 'D, d M yy',
1077
	RFC_2822: 'D, d M yy',
1078
	RSS: 'D, d M y', // RFC 822
1079
	TICKS: '!',
1080
	TIMESTAMP: '@',
1081
	W3C: 'yy-mm-dd', // ISO 8601
1082
 
1083
	_ticksTo1970: (((1970 - 1) * 365 + Math.floor(1970 / 4) - Math.floor(1970 / 100) +
1084
		Math.floor(1970 / 400)) * 24 * 60 * 60 * 10000000),
1085
 
1086
	/* Format a date object into a string value.
1087
	   The format can be combinations of the following:
1088
	   d  - day of month (no leading zero)
1089
	   dd - day of month (two digit)
1090
	   o  - day of year (no leading zeros)
1091
	   oo - day of year (three digit)
1092
	   D  - day name short
1093
	   DD - day name long
1094
	   m  - month of year (no leading zero)
1095
	   mm - month of year (two digit)
1096
	   M  - month name short
1097
	   MM - month name long
1098
	   y  - year (two digit)
1099
	   yy - year (four digit)
1100
	   @ - Unix timestamp (ms since 01/01/1970)
1101
	   ! - Windows ticks (100ns since 01/01/0001)
1102
	   '...' - literal text
1103
	   '' - single quote
1104
 
1105
	   @param  format    string - the desired format of the date
1106
	   @param  date      Date - the date value to format
1107
	   @param  settings  Object - attributes include:
1108
	                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
1109
	                     dayNames         string[7] - names of the days from Sunday (optional)
1110
	                     monthNamesShort  string[12] - abbreviated names of the months (optional)
1111
	                     monthNames       string[12] - names of the months (optional)
1112
	   @return  string - the date in the above format */
1113
	formatDate: function (format, date, settings) {
1114
		if (!date)
1115
			return '';
1116
		var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
1117
		var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
1118
		var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
1119
		var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
1120
		// Check whether a format character is doubled
1121
		var lookAhead = function(match) {
1122
			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1123
			if (matches)
1124
				iFormat++;
1125
			return matches;
1126
		};
1127
		// Format a number, with leading zero if necessary
1128
		var formatNumber = function(match, value, len) {
1129
			var num = '' + value;
1130
			if (lookAhead(match))
1131
				while (num.length < len)
1132
					num = '0' + num;
1133
			return num;
1134
		};
1135
		// Format a name, short or long as requested
1136
		var formatName = function(match, value, shortNames, longNames) {
1137
			return (lookAhead(match) ? longNames[value] : shortNames[value]);
1138
		};
1139
		var output = '';
1140
		var literal = false;
1141
		if (date)
1142
			for (var iFormat = 0; iFormat < format.length; iFormat++) {
1143
				if (literal)
1144
					if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1145
						literal = false;
1146
					else
1147
						output += format.charAt(iFormat);
1148
				else
1149
					switch (format.charAt(iFormat)) {
1150
						case 'd':
1151
							output += formatNumber('d', date.getDate(), 2);
1152
							break;
1153
						case 'D':
1154
							output += formatName('D', date.getDay(), dayNamesShort, dayNames);
1155
							break;
1156
						case 'o':
1157
							output += formatNumber('o',
1158
								(date.getTime() - new Date(date.getFullYear(), 0, 0).getTime()) / 86400000, 3);
1159
							break;
1160
						case 'm':
1161
							output += formatNumber('m', date.getMonth() + 1, 2);
1162
							break;
1163
						case 'M':
1164
							output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
1165
							break;
1166
						case 'y':
1167
							output += (lookAhead('y') ? date.getFullYear() :
1168
								(date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
1169
							break;
1170
						case '@':
1171
							output += date.getTime();
1172
							break;
1173
						case '!':
1174
							output += date.getTime() * 10000 + this._ticksTo1970;
1175
							break;
1176
						case "'":
1177
							if (lookAhead("'"))
1178
								output += "'";
1179
							else
1180
								literal = true;
1181
							break;
1182
						default:
1183
							output += format.charAt(iFormat);
1184
					}
1185
			}
1186
		return output;
1187
	},
1188
 
1189
	/* Extract all possible characters from the date format. */
1190
	_possibleChars: function (format) {
1191
		var chars = '';
1192
		var literal = false;
1193
		// Check whether a format character is doubled
1194
		var lookAhead = function(match) {
1195
			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1196
			if (matches)
1197
				iFormat++;
1198
			return matches;
1199
		};
1200
		for (var iFormat = 0; iFormat < format.length; iFormat++)
1201
			if (literal)
1202
				if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1203
					literal = false;
1204
				else
1205
					chars += format.charAt(iFormat);
1206
			else
1207
				switch (format.charAt(iFormat)) {
1208
					case 'd': case 'm': case 'y': case '@':
1209
						chars += '0123456789';
1210
						break;
1211
					case 'D': case 'M':
1212
						return null; // Accept anything
1213
					case "'":
1214
						if (lookAhead("'"))
1215
							chars += "'";
1216
						else
1217
							literal = true;
1218
						break;
1219
					default:
1220
						chars += format.charAt(iFormat);
1221
				}
1222
		return chars;
1223
	},
1224
 
1225
	/* Get a setting value, defaulting if necessary. */
1226
	_get: function(inst, name) {
1227
		return inst.settings[name] !== undefined ?
1228
			inst.settings[name] : this._defaults[name];
1229
	},
1230
 
1231
	/* Parse existing date and initialise date picker. */
1232
	_setDateFromField: function(inst, noDefault) {
1233
		if (inst.input.val() == inst.lastVal) {
1234
			return;
1235
		}
1236
		var dateFormat = this._get(inst, 'dateFormat');
1237
		var dates = inst.lastVal = inst.input ? inst.input.val() : null;
1238
		var date, defaultDate;
1239
		date = defaultDate = this._getDefaultDate(inst);
1240
		var settings = this._getFormatConfig(inst);
1241
		try {
1242
			date = this.parseDate(dateFormat, dates, settings) || defaultDate;
1243
		} catch (event) {
1244
			this.log(event);
1245
			dates = (noDefault ? '' : dates);
1246
		}
1247
		inst.selectedDay = date.getDate();
1248
		inst.drawMonth = inst.selectedMonth = date.getMonth();
1249
		inst.drawYear = inst.selectedYear = date.getFullYear();
1250
		inst.currentDay = (dates ? date.getDate() : 0);
1251
		inst.currentMonth = (dates ? date.getMonth() : 0);
1252
		inst.currentYear = (dates ? date.getFullYear() : 0);
1253
		this._adjustInstDate(inst);
1254
	},
1255
 
1256
	/* Retrieve the default date shown on opening. */
1257
	_getDefaultDate: function(inst) {
1258
		return this._restrictMinMax(inst,
1259
			this._determineDate(inst, this._get(inst, 'defaultDate'), new Date()));
1260
	},
1261
 
1262
	/* A date may be specified as an exact value or a relative one. */
1263
	_determineDate: function(inst, date, defaultDate) {
1264
		var offsetNumeric = function(offset) {
1265
			var date = new Date();
1266
			date.setDate(date.getDate() + offset);
1267
			return date;
1268
		};
1269
		var offsetString = function(offset) {
1270
			try {
1271
				return $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
1272
					offset, $.datepicker._getFormatConfig(inst));
1273
			}
1274
			catch (e) {
1275
				// Ignore
1276
			}
1277
			var date = (offset.toLowerCase().match(/^c/) ?
1278
				$.datepicker._getDate(inst) : null) || new Date();
1279
			var year = date.getFullYear();
1280
			var month = date.getMonth();
1281
			var day = date.getDate();
1282
			var pattern = /([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g;
1283
			var matches = pattern.exec(offset);
1284
			while (matches) {
1285
				switch (matches[2] || 'd') {
1286
					case 'd' : case 'D' :
1287
						day += parseInt(matches[1],10); break;
1288
					case 'w' : case 'W' :
1289
						day += parseInt(matches[1],10) * 7; break;
1290
					case 'm' : case 'M' :
1291
						month += parseInt(matches[1],10);
1292
						day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
1293
						break;
1294
					case 'y': case 'Y' :
1295
						year += parseInt(matches[1],10);
1296
						day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
1297
						break;
1298
				}
1299
				matches = pattern.exec(offset);
1300
			}
1301
			return new Date(year, month, day);
1302
		};
1303
		date = (date == null ? defaultDate : (typeof date == 'string' ? offsetString(date) :
1304
			(typeof date == 'number' ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : date)));
1305
		date = (date && date.toString() == 'Invalid Date' ? defaultDate : date);
1306
		if (date) {
1307
			date.setHours(0);
1308
			date.setMinutes(0);
1309
			date.setSeconds(0);
1310
			date.setMilliseconds(0);
1311
		}
1312
		return this._daylightSavingAdjust(date);
1313
	},
1314
 
1315
	/* Handle switch to/from daylight saving.
1316
	   Hours may be non-zero on daylight saving cut-over:
1317
	   > 12 when midnight changeover, but then cannot generate
1318
	   midnight datetime, so jump to 1AM, otherwise reset.
1319
	   @param  date  (Date) the date to check
1320
	   @return  (Date) the corrected date */
1321
	_daylightSavingAdjust: function(date) {
1322
		if (!date) return null;
1323
		date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
1324
		return date;
1325
	},
1326
 
1327
	/* Set the date(s) directly. */
1328
	_setDate: function(inst, date, noChange) {
1329
		var clear = !(date);
1330
		var origMonth = inst.selectedMonth;
1331
		var origYear = inst.selectedYear;
1332
		date = this._restrictMinMax(inst, this._determineDate(inst, date, new Date()));
1333
		inst.selectedDay = inst.currentDay = date.getDate();
1334
		inst.drawMonth = inst.selectedMonth = inst.currentMonth = date.getMonth();
1335
		inst.drawYear = inst.selectedYear = inst.currentYear = date.getFullYear();
1336
		if ((origMonth != inst.selectedMonth || origYear != inst.selectedYear) && !noChange)
1337
			this._notifyChange(inst);
1338
		this._adjustInstDate(inst);
1339
		if (inst.input) {
1340
			inst.input.val(clear ? '' : this._formatDate(inst));
1341
		}
1342
	},
1343
 
1344
	/* Retrieve the date(s) directly. */
1345
	_getDate: function(inst) {
1346
		var startDate = (!inst.currentYear || (inst.input && inst.input.val() == '') ? null :
1347
			this._daylightSavingAdjust(new Date(
1348
			inst.currentYear, inst.currentMonth, inst.currentDay)));
1349
			return startDate;
1350
	},
1351
 
1352
	/* Generate the HTML for the current state of the date picker. */
1353
	_generateHTML: function(inst) {
1354
		var today = new Date();
1355
		today = this._daylightSavingAdjust(
1356
			new Date(today.getFullYear(), today.getMonth(), today.getDate())); // clear time
1357
		var isRTL = this._get(inst, 'isRTL');
1358
		var showButtonPanel = this._get(inst, 'showButtonPanel');
1359
		var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
1360
		var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
1361
		var numMonths = this._getNumberOfMonths(inst);
1362
		var showCurrentAtPos = this._get(inst, 'showCurrentAtPos');
1363
		var stepMonths = this._get(inst, 'stepMonths');
1364
		var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
1365
		var currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
1366
			new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1367
		var minDate = this._getMinMaxDate(inst, 'min');
1368
		var maxDate = this._getMinMaxDate(inst, 'max');
1369
		var drawMonth = inst.drawMonth - showCurrentAtPos;
1370
		var drawYear = inst.drawYear;
1371
		if (drawMonth < 0) {
1372
			drawMonth += 12;
1373
			drawYear--;
1374
		}
1375
		if (maxDate) {
1376
			var maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
1377
				maxDate.getMonth() - (numMonths[0] * numMonths[1]) + 1, maxDate.getDate()));
1378
			maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
1379
			while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
1380
				drawMonth--;
1381
				if (drawMonth < 0) {
1382
					drawMonth = 11;
1383
					drawYear--;
1384
				}
1385
			}
1386
		}
1387
		inst.drawMonth = drawMonth;
1388
		inst.drawYear = drawYear;
1389
		var prevText = this._get(inst, 'prevText');
1390
		prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
1391
			this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
1392
			this._getFormatConfig(inst)));
1393
		var prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
1394
			'<a class="ui-datepicker-prev ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1395
			'.datepicker._adjustDate(\'#' + inst.id + '\', -' + stepMonths + ', \'M\');"' +
1396
			' title="' + prevText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>' :
1397
			(hideIfNoPrevNext ? '' : '<a class="ui-datepicker-prev ui-corner-all ui-state-disabled" title="'+ prevText +'"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>'));
1398
		var nextText = this._get(inst, 'nextText');
1399
		nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
1400
			this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
1401
			this._getFormatConfig(inst)));
1402
		var next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
1403
			'<a class="ui-datepicker-next ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1404
			'.datepicker._adjustDate(\'#' + inst.id + '\', +' + stepMonths + ', \'M\');"' +
1405
			' title="' + nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>' :
1406
			(hideIfNoPrevNext ? '' : '<a class="ui-datepicker-next ui-corner-all ui-state-disabled" title="'+ nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>'));
1407
		var currentText = this._get(inst, 'currentText');
1408
		var gotoDate = (this._get(inst, 'gotoCurrent') && inst.currentDay ? currentDate : today);
1409
		currentText = (!navigationAsDateFormat ? currentText :
1410
			this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));
1411
		var controls = (!inst.inline ? '<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1412
			'.datepicker._hideDatepicker();">' + this._get(inst, 'closeText') + '</button>' : '');
1413
		var buttonPanel = (showButtonPanel) ? '<div class="ui-datepicker-buttonpane ui-widget-content">' + (isRTL ? controls : '') +
1414
			(this._isInRange(inst, gotoDate) ? '<button type="button" class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1415
			'.datepicker._gotoToday(\'#' + inst.id + '\');"' +
1416
			'>' + currentText + '</button>' : '') + (isRTL ? '' : controls) + '</div>' : '';
1417
		var firstDay = parseInt(this._get(inst, 'firstDay'),10);
1418
		firstDay = (isNaN(firstDay) ? 0 : firstDay);
1419
		var showWeek = this._get(inst, 'showWeek');
1420
		var dayNames = this._get(inst, 'dayNames');
1421
		var dayNamesShort = this._get(inst, 'dayNamesShort');
1422
		var dayNamesMin = this._get(inst, 'dayNamesMin');
1423
		var monthNames = this._get(inst, 'monthNames');
1424
		var monthNamesShort = this._get(inst, 'monthNamesShort');
1425
		var beforeShowDay = this._get(inst, 'beforeShowDay');
1426
		var showOtherMonths = this._get(inst, 'showOtherMonths');
1427
		var selectOtherMonths = this._get(inst, 'selectOtherMonths');
1428
		var calculateWeek = this._get(inst, 'calculateWeek') || this.iso8601Week;
1429
		var defaultDate = this._getDefaultDate(inst);
1430
		var html = '';
1431
		for (var row = 0; row < numMonths[0]; row++) {
1432
			var group = '';
1433
			for (var col = 0; col < numMonths[1]; col++) {
1434
				var selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
1435
				var cornerClass = ' ui-corner-all';
1436
				var calender = '';
1437
				if (isMultiMonth) {
1438
					calender += '<div class="ui-datepicker-group';
1439
					if (numMonths[1] > 1)
1440
						switch (col) {
1441
							case 0: calender += ' ui-datepicker-group-first';
1442
								cornerClass = ' ui-corner-' + (isRTL ? 'right' : 'left'); break;
1443
							case numMonths[1]-1: calender += ' ui-datepicker-group-last';
1444
								cornerClass = ' ui-corner-' + (isRTL ? 'left' : 'right'); break;
1445
							default: calender += ' ui-datepicker-group-middle'; cornerClass = ''; break;
1446
						}
1447
					calender += '">';
1448
				}
1449
				calender += '<div class="ui-datepicker-header ui-widget-header ui-helper-clearfix' + cornerClass + '">' +
1450
					(/all|left/.test(cornerClass) && row == 0 ? (isRTL ? next : prev) : '') +
1451
					(/all|right/.test(cornerClass) && row == 0 ? (isRTL ? prev : next) : '') +
1452
					this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
1453
					row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
1454
					'</div><table class="ui-datepicker-calendar"><thead>' +
1455
					'<tr>';
1456
				var thead = (showWeek ? '<th class="ui-datepicker-week-col">' + this._get(inst, 'weekHeader') + '</th>' : '');
1457
				for (var dow = 0; dow < 7; dow++) { // days of the week
1458
					var day = (dow + firstDay) % 7;
1459
					thead += '<th' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end"' : '') + '>' +
1460
						'<span title="' + dayNames[day] + '">' + dayNamesMin[day] + '</span></th>';
1461
				}
1462
				calender += thead + '</tr></thead><tbody>';
1463
				var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
1464
				if (drawYear == inst.selectedYear && drawMonth == inst.selectedMonth)
1465
					inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
1466
				var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
1467
				var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
1468
				var printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
1469
				for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
1470
					calender += '<tr>';
1471
					var tbody = (!showWeek ? '' : '<td class="ui-datepicker-week-col">' +
1472
						this._get(inst, 'calculateWeek')(printDate) + '</td>');
1473
					for (var dow = 0; dow < 7; dow++) { // create date picker days
1474
						var daySettings = (beforeShowDay ?
1475
							beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, '']);
1476
						var otherMonth = (printDate.getMonth() != drawMonth);
1477
						var unselectable = (otherMonth && !selectOtherMonths) || !daySettings[0] ||
1478
							(minDate && printDate < minDate) || (maxDate && printDate > maxDate);
1479
						tbody += '<td class="' +
1480
							((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end' : '') + // highlight weekends
1481
							(otherMonth ? ' ui-datepicker-other-month' : '') + // highlight days from other months
1482
							((printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth && inst._keyEvent) || // user pressed key
1483
							(defaultDate.getTime() == printDate.getTime() && defaultDate.getTime() == selectedDate.getTime()) ?
1484
							// or defaultDate is current printedDate and defaultDate is selectedDate
1485
							' ' + this._dayOverClass : '') + // highlight selected day
1486
							(unselectable ? ' ' + this._unselectableClass + ' ui-state-disabled': '') +  // highlight unselectable days
1487
							(otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
1488
							(printDate.getTime() == currentDate.getTime() ? ' ' + this._currentClass : '') + // highlight selected day
1489
							(printDate.getTime() == today.getTime() ? ' ui-datepicker-today' : '')) + '"' + // highlight today (if different)
1490
							((!otherMonth || showOtherMonths) && daySettings[2] ? ' title="' + daySettings[2] + '"' : '') + // cell title
1491
							(unselectable ? '' : ' onclick="DP_jQuery_' + dpuuid + '.datepicker._selectDay(\'#' +
1492
							inst.id + '\',' + printDate.getMonth() + ',' + printDate.getFullYear() + ', this);return false;"') + '>' + // actions
1493
							(otherMonth && !showOtherMonths ? '&#xa0;' : // display for other months
1494
							(unselectable ? '<span class="ui-state-default">' + printDate.getDate() + '</span>' : '<a class="ui-state-default' +
1495
							(printDate.getTime() == today.getTime() ? ' ui-state-highlight' : '') +
1496
							(printDate.getTime() == selectedDate.getTime() ? ' ui-state-active' : '') + // highlight selected day
1497
							(otherMonth ? ' ui-priority-secondary' : '') + // distinguish dates from other months
1498
							'" href="#">' + printDate.getDate() + '</a>')) + '</td>'; // display selectable date
1499
						printDate.setDate(printDate.getDate() + 1);
1500
						printDate = this._daylightSavingAdjust(printDate);
1501
					}
1502
					calender += tbody + '</tr>';
1503
				}
1504
				drawMonth++;
1505
				if (drawMonth > 11) {
1506
					drawMonth = 0;
1507
					drawYear++;
1508
				}
1509
				calender += '</tbody></table>' + (isMultiMonth ? '</div>' +
1510
							((numMonths[0] > 0 && col == numMonths[1]-1) ? '<div class="ui-datepicker-row-break"></div>' : '') : '');
1511
				group += calender;
1512
			}
1513
			html += group;
1514
		}
1515
		html += buttonPanel + ($.browser.msie && parseInt($.browser.version,10) < 7 && !inst.inline ?
1516
			'<iframe src="javascript:false;" class="ui-datepicker-cover" frameborder="0"></iframe>' : '');
1517
		inst._keyEvent = false;
1518
		return html;
1519
	},
1520
 
1521
	/* Generate the month and year header. */
1522
	_generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
1523
			secondary, monthNames, monthNamesShort) {
1524
		var changeMonth = this._get(inst, 'changeMonth');
1525
		var changeYear = this._get(inst, 'changeYear');
1526
		var showMonthAfterYear = this._get(inst, 'showMonthAfterYear');
1527
		var html = '<div class="ui-datepicker-title">';
1528
		var monthHtml = '';
1529
		// month selection
1530
		if (secondary || !changeMonth)
1531
			monthHtml += '<span class="ui-datepicker-month">' + monthNames[drawMonth] + '</span>';
1532
		else {
1533
			var inMinYear = (minDate && minDate.getFullYear() == drawYear);
1534
			var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
1535
			monthHtml += '<select class="ui-datepicker-month" ' +
1536
				'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'M\');" ' +
1537
				'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1538
			 	'>';
1539
			for (var month = 0; month < 12; month++) {
1540
				if ((!inMinYear || month >= minDate.getMonth()) &&
1541
						(!inMaxYear || month <= maxDate.getMonth()))
1542
					monthHtml += '<option value="' + month + '"' +
1543
						(month == drawMonth ? ' selected="selected"' : '') +
1544
						'>' + monthNamesShort[month] + '</option>';
1545
			}
1546
			monthHtml += '</select>';
1547
		}
1548
		if (!showMonthAfterYear)
1549
			html += monthHtml + (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '');
1550
		// year selection
1551
		if (secondary || !changeYear)
1552
			html += '<span class="ui-datepicker-year">' + drawYear + '</span>';
1553
		else {
1554
			// determine range of years to display
1555
			var years = this._get(inst, 'yearRange').split(':');
1556
			var thisYear = new Date().getFullYear();
1557
			var determineYear = function(value) {
1558
				var year = (value.match(/c[+-].*/) ? drawYear + parseInt(value.substring(1), 10) :
1559
					(value.match(/[+-].*/) ? thisYear + parseInt(value, 10) :
1560
					parseInt(value, 10)));
1561
				return (isNaN(year) ? thisYear : year);
1562
			};
1563
			var year = determineYear(years[0]);
1564
			var endYear = Math.max(year, determineYear(years[1] || ''));
1565
			year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
1566
			endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
1567
			html += '<select class="ui-datepicker-year" ' +
1568
				'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'Y\');" ' +
1569
				'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1570
				'>';
1571
			for (; year <= endYear; year++) {
1572
				html += '<option value="' + year + '"' +
1573
					(year == drawYear ? ' selected="selected"' : '') +
1574
					'>' + year + '</option>';
1575
			}
1576
			html += '</select>';
1577
		}
1578
		html += this._get(inst, 'yearSuffix');
1579
		if (showMonthAfterYear)
1580
			html += (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '') + monthHtml;
1581
		html += '</div>'; // Close datepicker_header
1582
		return html;
1583
	},
1584
 
1585
	/* Adjust one of the date sub-fields. */
1586
	_adjustInstDate: function(inst, offset, period) {
1587
		var year = inst.drawYear + (period == 'Y' ? offset : 0);
1588
		var month = inst.drawMonth + (period == 'M' ? offset : 0);
1589
		var day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) +
1590
			(period == 'D' ? offset : 0);
1591
		var date = this._restrictMinMax(inst,
1592
			this._daylightSavingAdjust(new Date(year, month, day)));
1593
		inst.selectedDay = date.getDate();
1594
		inst.drawMonth = inst.selectedMonth = date.getMonth();
1595
		inst.drawYear = inst.selectedYear = date.getFullYear();
1596
		if (period == 'M' || period == 'Y')
1597
			this._notifyChange(inst);
1598
	},
1599
 
1600
	/* Ensure a date is within any min/max bounds. */
1601
	_restrictMinMax: function(inst, date) {
1602
		var minDate = this._getMinMaxDate(inst, 'min');
1603
		var maxDate = this._getMinMaxDate(inst, 'max');
1604
		date = (minDate && date < minDate ? minDate : date);
1605
		date = (maxDate && date > maxDate ? maxDate : date);
1606
		return date;
1607
	},
1608
 
1609
	/* Notify change of month/year. */
1610
	_notifyChange: function(inst) {
1611
		var onChange = this._get(inst, 'onChangeMonthYear');
1612
		if (onChange)
1613
			onChange.apply((inst.input ? inst.input[0] : null),
1614
				[inst.selectedYear, inst.selectedMonth + 1, inst]);
1615
	},
1616
 
1617
	/* Determine the number of months to show. */
1618
	_getNumberOfMonths: function(inst) {
1619
		var numMonths = this._get(inst, 'numberOfMonths');
1620
		return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
1621
	},
1622
 
1623
	/* Determine the current maximum date - ensure no time components are set. */
1624
	_getMinMaxDate: function(inst, minMax) {
1625
		return this._determineDate(inst, this._get(inst, minMax + 'Date'), null);
1626
	},
1627
 
1628
	/* Find the number of days in a given month. */
1629
	_getDaysInMonth: function(year, month) {
1630
		return 32 - new Date(year, month, 32).getDate();
1631
	},
1632
 
1633
	/* Find the day of the week of the first of a month. */
1634
	_getFirstDayOfMonth: function(year, month) {
1635
		return new Date(year, month, 1).getDay();
1636
	},
1637
 
1638
	/* Determines if we should allow a "next/prev" month display change. */
1639
	_canAdjustMonth: function(inst, offset, curYear, curMonth) {
1640
		var numMonths = this._getNumberOfMonths(inst);
1641
		var date = this._daylightSavingAdjust(new Date(curYear,
1642
			curMonth + (offset < 0 ? offset : numMonths[0] * numMonths[1]), 1));
1643
		if (offset < 0)
1644
			date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
1645
		return this._isInRange(inst, date);
1646
	},
1647
 
1648
	/* Is the given date in the accepted range? */
1649
	_isInRange: function(inst, date) {
1650
		var minDate = this._getMinMaxDate(inst, 'min');
1651
		var maxDate = this._getMinMaxDate(inst, 'max');
1652
		return ((!minDate || date.getTime() >= minDate.getTime()) &&
1653
			(!maxDate || date.getTime() <= maxDate.getTime()));
1654
	},
1655
 
1656
	/* Provide the configuration settings for formatting/parsing. */
1657
	_getFormatConfig: function(inst) {
1658
		var shortYearCutoff = this._get(inst, 'shortYearCutoff');
1659
		shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
1660
			new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
1661
		return {shortYearCutoff: shortYearCutoff,
1662
			dayNamesShort: this._get(inst, 'dayNamesShort'), dayNames: this._get(inst, 'dayNames'),
1663
			monthNamesShort: this._get(inst, 'monthNamesShort'), monthNames: this._get(inst, 'monthNames')};
1664
	},
1665
 
1666
	/* Format the given date for display. */
1667
	_formatDate: function(inst, day, month, year) {
1668
		if (!day) {
1669
			inst.currentDay = inst.selectedDay;
1670
			inst.currentMonth = inst.selectedMonth;
1671
			inst.currentYear = inst.selectedYear;
1672
		}
1673
		var date = (day ? (typeof day == 'object' ? day :
1674
			this._daylightSavingAdjust(new Date(year, month, day))) :
1675
			this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1676
		return this.formatDate(this._get(inst, 'dateFormat'), date, this._getFormatConfig(inst));
1677
	}
1678
});
1679
 
1680
/* jQuery extend now ignores nulls! */
1681
function extendRemove(target, props) {
1682
	$.extend(target, props);
1683
	for (var name in props)
1684
		if (props[name] == null || props[name] == undefined)
1685
			target[name] = props[name];
1686
	return target;
1687
};
1688
 
1689
/* Determine whether an object is an array. */
1690
function isArray(a) {
1691
	return (a && (($.browser.safari && typeof a == 'object' && a.length) ||
1692
		(a.constructor && a.constructor.toString().match(/\Array\(\)/))));
1693
};
1694
 
1695
/* Invoke the datepicker functionality.
1696
   @param  options  string - a command, optionally followed by additional parameters or
1697
                    Object - settings for attaching new datepicker functionality
1698
   @return  jQuery object */
1699
$.fn.datepicker = function(options){
1700
 
1701
	/* Initialise the date picker. */
1702
	if (!$.datepicker.initialized) {
1703
		$(document).mousedown($.datepicker._checkExternalClick).
1704
			find('body').append($.datepicker.dpDiv);
1705
		$.datepicker.initialized = true;
1706
	}
1707
 
1708
	var otherArgs = Array.prototype.slice.call(arguments, 1);
1709
	if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate' || options == 'widget'))
1710
		return $.datepicker['_' + options + 'Datepicker'].
1711
			apply($.datepicker, [this[0]].concat(otherArgs));
1712
	if (options == 'option' && arguments.length == 2 && typeof arguments[1] == 'string')
1713
		return $.datepicker['_' + options + 'Datepicker'].
1714
			apply($.datepicker, [this[0]].concat(otherArgs));
1715
	return this.each(function() {
1716
		typeof options == 'string' ?
1717
			$.datepicker['_' + options + 'Datepicker'].
1718
				apply($.datepicker, [this].concat(otherArgs)) :
1719
			$.datepicker._attachDatepicker(this, options);
1720
	});
1721
};
1722
 
1723
$.datepicker = new Datepicker(); // singleton instance
1724
$.datepicker.initialized = false;
1725
$.datepicker.uuid = new Date().getTime();
1726
$.datepicker.version = "1.8.5";
1727
 
1728
// Workaround for #4055
1729
// Add another global to avoid noConflict issues with inline event handlers
1730
window['DP_jQuery_' + dpuuid] = $;
1731
 
1732
})(jQuery);