/*
* jQuery timepicker addon
* By: Trent Richardson [http://trentrichardson.com]
* Version 0.9.4-dev
* Last Modified: 03/02/2011
* 
* Copyright 2011 Trent Richardson
* Dual licensed under the MIT and GPL licenses.
* http://trentrichardson.com/Impromptu/GPL-LICENSE.txt
* http://trentrichardson.com/Impromptu/MIT-LICENSE.txt
* 
* HERES THE CSS:
* .ui-timepicker-div .ui-widget-header{ margin-bottom: 8px; }
* .ui-timepicker-div dl{ text-align: left; }
* .ui-timepicker-div dl dt{ height: 25px; }
* .ui-timepicker-div dl dd{ margin: -25px 0 10px 65px; }
* .ui-timepicker-div td { font-size: 90%; }
*/

(function($) {

$.extend($.ui, { timepicker: { version: "0.9.4" } });

/* Time picker manager.
   Use the singleton instance of this class, $.timepicker, to interact with the time picker.
   Settings for (groups of) time pickers are maintained in an instance object,
   allowing multiple different settings on the same page. */

function Timepicker() {
	this.regional = []; // Available regional settings, indexed by language code
	this.regional[''] = { // Default regional settings
		currentText: 'Now',
		closeText: 'Done',
		ampm: false,
		timeFormat: 'hh:mm tt',
		timeOnlyTitle: 'Choose Time',
		timeText: 'Time',
		hourText: 'Hour',
		minuteText: 'Minute',
		secondText: 'Second',
		timezoneText: 'Time Zone'
	};
	this._defaults = { // Global defaults for all the datetime picker instances
		showButtonPanel: true,
		timeOnly: false,
		showHour: true,
		showMinute: true,
		showSecond: false,
		showTimezone: false,
		showTime: true,
		stepHour: 0.05,
		stepMinute: 0.05,
		stepSecond: 0.05,
		hour: 0,
		minute: 0,
		second: 0,
		timezone: '+0000',
		hourMin: 0,
		minuteMin: 0,
		secondMin: 0,
		hourMax: 23,
		minuteMax: 59,
		secondMax: 59,
		minDateTime: null,
		maxDateTime: null,
		hourGrid: 0,
		minuteGrid: 0,
		secondGrid: 0,
		alwaysSetTime: true,
		separator: ' ',
		altFieldTimeOnly: true,
		showTimepicker: true,
		timezoneList: ["-1100", "-1000", "-0900", "-0800", "-0700", "-0600",
			       "-0500", "-0400", "-0300", "-0200", "-0100", "+0000",
			       "+0100", "+0200", "+0300", "+0400", "+0500", "+0600",
			       "+0700", "+0800", "+0900", "+1000", "+1100", "+1200"]
	};
	$.extend(this._defaults, this.regional['']);
}

$.extend(Timepicker.prototype, {
	$input: null,
	$altInput: null,
	$timeObj: null,
	inst: null,
	hour_slider: null,
	minute_slider: null,
	second_slider: null,
	timezone_select: null,
	hour: 0,
	minute: 0,
	second: 0,
	timezone: '+0000',
	hourMinOriginal: null,
	minuteMinOriginal: null,
	secondMinOriginal: null,
	hourMaxOriginal: null,
	minuteMaxOriginal: null,
	secondMaxOriginal: null,
	ampm: '',
	formattedDate: '',
	formattedTime: '',
	formattedDateTime: '',
	timezoneList: ["-1100", "-1000", "-0900", "-0800", "-0700", "-0600",
			"-0500", "-0400", "-0300", "-0200", "-0100", "+0000",
			"+0100", "+0200", "+0300", "+0400", "+0500", "+0600",
			"+0700", "+0800", "+0900", "+1000", "+1100", "+1200"],

	/* Override the default settings for all instances of the time 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;
	},

	//########################################################################
	// Create a new Timepicker instance
	//########################################################################
	_newInst: function($input, o) {
		var tp_inst = new Timepicker(),
			inlineSettings = {};
			
		for (var attrName in this._defaults) {
			var attrValue = $input.attr('time:' + attrName);
			if (attrValue) {
				try {
					inlineSettings[attrName] = eval(attrValue);
				} catch (err) {
					inlineSettings[attrName] = attrValue;
				}
			}
		}
		tp_inst._defaults = $.extend({}, this._defaults, inlineSettings, o, {
			beforeShow: function(input, dp_inst) {
				if ($.isFunction(o.beforeShow))
					o.beforeShow(input, dp_inst, tp_inst);
			},
			onChangeMonthYear: function(year, month, dp_inst) {
				// Update the time as well : this prevents the time from disappearing from the $input field.
				tp_inst._updateDateTime(dp_inst);
				if ($.isFunction(o.onChangeMonthYear))
					o.onChangeMonthYear.call($input[0], year, month, dp_inst, tp_inst);
			},
			onClose: function(dateText, dp_inst) {
				if (tp_inst.timeDefined === true && $input.val() != '')
					tp_inst._updateDateTime(dp_inst);
				if ($.isFunction(o.onClose))
					o.onClose.call($input[0], dateText, dp_inst, tp_inst);
			},
			timepicker: tp_inst // add timepicker as a property of datepicker: $.datepicker._get(dp_inst, 'timepicker');
		});

		tp_inst.hour = tp_inst._defaults.hour;
		tp_inst.minute = tp_inst._defaults.minute;
		tp_inst.second = tp_inst._defaults.second;
		tp_inst.ampm = '';
		tp_inst.$input = $input;

		if (o.altField)
			tp_inst.$altInput = $(o.altField)
				.css({ cursor: 'pointer' })
				.focus(function(){ $input.trigger("focus"); });
						
		// datepicker needs minDate/maxDate, timepicker needs minDateTime/maxDateTime..
		if(tp_inst._defaults.minDate !== undefined && tp_inst._defaults.minDate instanceof Date)
			tp_inst._defaults.minDateTime = new Date(tp_inst._defaults.minDate.getTime());
		if(tp_inst._defaults.minDateTime !== undefined && tp_inst._defaults.minDateTime instanceof Date)
			tp_inst._defaults.minDate = new Date(tp_inst._defaults.minDateTime.getTime());
		if(tp_inst._defaults.maxDate !== undefined && tp_inst._defaults.maxDate instanceof Date)
			tp_inst._defaults.maxDateTime = new Date(tp_inst._defaults.maxDate.getTime());
		if(tp_inst._defaults.maxDateTime !== undefined && tp_inst._defaults.maxDateTime instanceof Date)
			tp_inst._defaults.maxDate = new Date(tp_inst._defaults.maxDateTime.getTime());
			
		return tp_inst;
	},

	//########################################################################
	// add our sliders to the calendar
	//########################################################################
	_addTimePicker: function(dp_inst) {
		var currDT = (this.$altInput && this._defaults.altFieldTimeOnly) ?
				this.$input.val() + ' ' + this.$altInput.val() : 
				this.$input.val();

		this.timeDefined = this._parseTime(currDT);
		this._limitMinMaxDateTime(dp_inst, false);
		this._injectTimePicker();
	},

	//########################################################################
	// parse the time string from input value or _setTime
	//########################################################################
	_parseTime: function(timeString, withDate) {
		var regstr = this._defaults.timeFormat.toString()
				.replace(/h{1,2}/ig, '(\\d?\\d)')
				.replace(/m{1,2}/ig, '(\\d?\\d)')
				.replace(/s{1,2}/ig, '(\\d?\\d)')
				.replace(/t{1,2}/ig, '(am|pm|a|p)?')
				.replace(/z{1}/ig, '((\\+|-)\\d\\d\\d\\d)?')
				.replace(/\s/g, '\\s?') + '$',
			order = this._getFormatPositions(),
			treg;

		if (!this.inst) this.inst = $.datepicker._getInst(this.$input[0]);

		if (withDate || !this._defaults.timeOnly) {
			// the time should come after x number of characters and a space.
			// x = at least the length of text specified by the date format
			var dp_dateFormat = $.datepicker._get(this.inst, 'dateFormat');
			// escape special regex characters in the seperator
			var specials = new RegExp("[.*+?|()\\[\\]{}\\\\]", "g");
			regstr = '.{' + dp_dateFormat.length + ',}' + this._defaults.separator.replace(specials, "\\$&") + regstr;
		}
		
		treg = timeString.match(new RegExp(regstr, 'i'));

		if (treg) {
			if (order.t !== -1)
				this.ampm = ((treg[order.t] === undefined || treg[order.t].length === 0) ?
					'' :
					(treg[order.t].charAt(0).toUpperCase() == 'A') ? 'AM' : 'PM').toUpperCase();

			if (order.h !== -1) {
				if (this.ampm == 'AM' && treg[order.h] == '12') 
					this.hour = 0; // 12am = 0 hour
				else if (this.ampm == 'PM' && treg[order.h] != '12') 
					this.hour = (parseFloat(treg[order.h]) + 12).toFixed(0); // 12pm = 12 hour, any other pm = hour + 12
				else this.hour = Number(treg[order.h]);
			}

			if (order.m !== -1) this.minute = Number(treg[order.m]);
			if (order.s !== -1) this.second = Number(treg[order.s]);
			if (order.z !== -1) this.timezone = treg[order.z];
			
			return true;

		}
		return false;
	},

	//########################################################################
	// figure out position of time elements.. cause js cant do named captures
	//########################################################################
	_getFormatPositions: function() {
		var finds = this._defaults.timeFormat.toLowerCase().match(/(h{1,2}|m{1,2}|s{1,2}|t{1,2}|z)/g),
			orders = { h: -1, m: -1, s: -1, t: -1, z: -1 };

		if (finds)
			for (var i = 0; i < finds.length; i++)
				if (orders[finds[i].toString().charAt(0)] == -1)
					orders[finds[i].toString().charAt(0)] = i + 1;

		return orders;
	},

	//########################################################################
	// generate and inject html for timepicker into ui datepicker
	//########################################################################
	_injectTimePicker: function() {
		var $dp = this.inst.dpDiv,
			o = this._defaults,
			tp_inst = this,
			// Added by Peter Medeiros:
			// - Figure out what the hour/minute/second max should be based on the step values.
			// - Example: if stepMinute is 15, then minMax is 45.
			hourMax = (o.hourMax - (o.hourMax % o.stepHour)).toFixed(0),
			minMax  = (o.minuteMax - (o.minuteMax % o.stepMinute)).toFixed(0),
			secMax  = (o.secondMax - (o.secondMax % o.stepSecond)).toFixed(0),
			dp_id = this.inst.id.toString().replace(/([^A-Za-z0-9_])/g, '');

		// Prevent displaying twice
		//if ($dp.find("div#ui-timepicker-div-"+ dp_id).length === 0) {
		if ($dp.find("div#ui-timepicker-div-"+ dp_id).length === 0 && o.showTimepicker) {
			var noDisplay = ' style="display:none;"',
				html =	'<div class="ui-timepicker-div" id="ui-timepicker-div-' + dp_id + '"><dl>' +
						'<dt class="ui_tpicker_time_label" id="ui_tpicker_time_label_' + dp_id + '"' +
						((o.showTime) ? '' : noDisplay) + '>' + o.timeText + '</dt>' +
						'<dd class="ui_tpicker_time" id="ui_tpicker_time_' + dp_id + '"' +
						((o.showTime) ? '' : noDisplay) + '></dd>' +
						'<dt class="ui_tpicker_hour_label" id="ui_tpicker_hour_label_' + dp_id + '"' +
						((o.showHour) ? '' : noDisplay) + '>' + o.hourText + '</dt>',
				hourGridSize = 0,
				minuteGridSize = 0,
				secondGridSize = 0,
				size;
 
			if (o.showHour && o.hourGrid > 0) {
				html += '<dd class="ui_tpicker_hour">' +
						'<div id="ui_tpicker_hour_' + dp_id + '"' + ((o.showHour)   ? '' : noDisplay) + '></div>' +
						'<div style="padding-left: 1px"><table><tr>';

				for (var h = o.hourMin; h < hourMax; h += o.hourGrid) {
					hourGridSize++;
					var tmph = (o.ampm && h > 12) ? h-12 : h;
					if (tmph < 10) tmph = '0' + tmph;
					if (o.ampm) {
						if (h == 0) tmph = 12 +'a';
						else if (h < 12) tmph += 'a';
						else tmph += 'p';
					}
					html += '<td>' + tmph + '</td>';
				}

				html += '</tr></table></div>' +
						'</dd>';
			} else html += '<dd class="ui_tpicker_hour" id="ui_tpicker_hour_' + dp_id + '"' +
							((o.showHour) ? '' : noDisplay) + '></dd>';

			html += '<dt class="ui_tpicker_minute_label" id="ui_tpicker_minute_label_' + dp_id + '"' +
					((o.showMinute) ? '' : noDisplay) + '>' + o.minuteText + '</dt>';

			if (o.showMinute && o.minuteGrid > 0) {
				html += '<dd class="ui_tpicker_minute ui_tpicker_minute_' + o.minuteGrid + '">' +
						'<div id="ui_tpicker_minute_' + dp_id + '"' +
						((o.showMinute) ? '' : noDisplay) + '></div>' +
						'<div style="padding-left: 1px"><table><tr>';

				for (var m = o.minuteMin; m < minMax; m += o.minuteGrid) {
					minuteGridSize++;
					html += '<td>' + ((m < 10) ? '0' : '') + m + '</td>';
				}

				html += '</tr></table></div>' +
						'</dd>';
			} else html += '<dd class="ui_tpicker_minute" id="ui_tpicker_minute_' + dp_id + '"' +
							((o.showMinute) ? '' : noDisplay) + '></dd>';

			html += '<dt class="ui_tpicker_second_label" id="ui_tpicker_second_label_' + dp_id + '"' +
					((o.showSecond) ? '' : noDisplay) + '>' + o.secondText + '</dt>';

			if (o.showSecond && o.secondGrid > 0) {
				html += '<dd class="ui_tpicker_second ui_tpicker_second_' + o.secondGrid + '">' +
						'<div id="ui_tpicker_second_' + dp_id + '"' +
						((o.showSecond) ? '' : noDisplay) + '></div>' +
						'<div style="padding-left: 1px"><table><tr>';

				for (var s = o.secondMin; s < secMax; s += o.secondGrid) {
					secondGridSize++;
					html += '<td>' + ((s < 10) ? '0' : '') + s + '</td>';
				}

				html += '</tr></table></div>' +
						'</dd>';
			} else html += '<dd class="ui_tpicker_second" id="ui_tpicker_second_' + dp_id + '"'	+
							((o.showSecond) ? '' : noDisplay) + '></dd>';
							
			html += '<dt class="ui_tpicker_timezone_label" id="ui_tpicker_timezone_label_' + dp_id + '"' +
					((o.showTimezone) ? '' : noDisplay) + '>' + o.timezoneText + '</dt>';
			html += '<dd class="ui_tpicker_timezone" id="ui_tpicker_timezone_' + dp_id + '"'	+
							((o.showTimezone) ? '' : noDisplay) + '></dd>';

			html += '</dl></div>';
			$tp = $(html);

				// if we only want time picker...
			if (o.timeOnly === true) {
				$tp.prepend(
					'<div class="ui-widget-header ui-helper-clearfix ui-corner-all">' +
						'<div class="ui-datepicker-title">' + o.timeOnlyTitle + '</div>' +
					'</div>');
				$dp.find('.ui-datepicker-header, .ui-datepicker-calendar').hide();
			}

			this.hour_slider = $tp.find('#ui_tpicker_hour_'+ dp_id).slider({
				orientation: "horizontal",
				value: this.hour,
				min: o.hourMin,
				max: hourMax,
				step: o.stepHour,
				slide: function(event, ui) {
					tp_inst.hour_slider.slider( "option", "value", ui.value);
					tp_inst._onTimeChange();
				}
			});

			// Updated by Peter Medeiros:
			// - Pass in Event and UI instance into slide function
			this.minute_slider = $tp.find('#ui_tpicker_minute_'+ dp_id).slider({
				orientation: "horizontal",
				value: this.minute,
				min: o.minuteMin,
				max: minMax,
				step: o.stepMinute,
				slide: function(event, ui) {
					// update the global minute slider instance value with the current slider value
					tp_inst.minute_slider.slider( "option", "value", ui.value);
					tp_inst._onTimeChange();
				}
			});

			this.second_slider = $tp.find('#ui_tpicker_second_'+ dp_id).slider({
				orientation: "horizontal",
				value: this.second,
				min: o.secondMin,
				max: secMax,
				step: o.stepSecond,
				slide: function(event, ui) {
					tp_inst.second_slider.slider( "option", "value", ui.value);
					tp_inst._onTimeChange();
				}
			});
			
			
			this.timezone_select = $tp.find('#ui_tpicker_timezone_'+ dp_id).append('<select></select>').find("select");
			$.fn.append.apply(this.timezone_select,
				$.map(o.timezoneList, function(val, idx) {
					return $("<option />")
						.val(typeof val == "object" ? val.value : val)
						.text(typeof val == "object" ? val.label : val);
				})
			);
			this.timezone_select.val((typeof this.timezone != "undefined" && this.timezone != null && this.timezone != "") ? this.timezone : o.timezone);
			this.timezone_select.change(function() {
				tp_inst._onTimeChange();
			});

			// Add grid functionality
			if (o.showHour && o.hourGrid > 0) {
				size = 100 * hourGridSize * o.hourGrid / (hourMax - o.hourMin);

				$tp.find(".ui_tpicker_hour table").css({
					width: size + "%",
					marginLeft: (size / (-2 * hourGridSize)) + "%",
					borderCollapse: 'collapse'
				}).find("td").each( function(index) {
					$(this).click(function() {
						var h = $(this).html();
						if(o.ampm)	{
							var ap = h.substring(2).toLowerCase(),
								aph = parseInt(h.substring(0,2));
							if (ap == 'a') {
								if (aph == 12) h = 0;
								else h = aph;
							} else if (aph == 12) h = 12;
							else h = aph + 12;
						}
						tp_inst.hour_slider.slider("option", "value", h);
						tp_inst._onTimeChange();
						tp_inst._onSelectHandler();
					}).css({
						cursor: 'pointer',
						width: (100 / hourGridSize) + '%',
						textAlign: 'center',
						overflow: 'hidden'
					});
				});
			}

			if (o.showMinute && o.minuteGrid > 0) {
				size = 100 * minuteGridSize * o.minuteGrid / (minMax - o.minuteMin);
				$tp.find(".ui_tpicker_minute table").css({
					width: size + "%",
					marginLeft: (size / (-2 * minuteGridSize)) + "%",
					borderCollapse: 'collapse'
				}).find("td").each(function(index) {
					$(this).click(function() {
						tp_inst.minute_slider.slider("option", "value", $(this).html());
						tp_inst._onTimeChange();
						tp_inst._onSelectHandler();
					}).css({
						cursor: 'pointer',
						width: (100 / minuteGridSize) + '%',
						textAlign: 'center',
						overflow: 'hidden'
					});
				});
			}

			if (o.showSecond && o.secondGrid > 0) {
				$tp.find(".ui_tpicker_second table").css({
					width: size + "%",
					marginLeft: (size / (-2 * secondGridSize)) + "%",
					borderCollapse: 'collapse'
				}).find("td").each(function(index) {
					$(this).click(function() {
						tp_inst.second_slider.slider("option", "value", $(this).html());
						tp_inst._onTimeChange();
						tp_inst._onSelectHandler();
					}).css({
						cursor: 'pointer',
						width: (100 / secondGridSize) + '%',
						textAlign: 'center',
						overflow: 'hidden'
					});
				});
			}

			var $buttonPanel = $dp.find('.ui-datepicker-buttonpane');
			if ($buttonPanel.length) $buttonPanel.before($tp);
			else $dp.append($tp);

			this.$timeObj = $tp.find('#ui_tpicker_time_'+ dp_id);

			if (this.inst !== null) {
				var timeDefined = this.timeDefined;
				this._onTimeChange();
				this.timeDefined = timeDefined;
			}

			//Emulate datepicker onSelect behavior. Call on slidestop.
			var onSelectDelegate = function() {
				tp_inst._onSelectHandler();
			}
			this.hour_slider.bind('slidestop',onSelectDelegate);
			this.minute_slider.bind('slidestop',onSelectDelegate);
			this.second_slider.bind('slidestop',onSelectDelegate);
		}
	},

	//########################################################################
	// This function tries to limit the ability to go outside the 
	// min/max date range
	//########################################################################
	_limitMinMaxDateTime: function(dp_inst, adjustSliders){
		var o = this._defaults,
			dp_date = new Date(dp_inst.selectedYear, dp_inst.selectedMonth, dp_inst.selectedDay);

		if(!this._defaults.showTimepicker) return; // No time so nothing to check here

		if(this._defaults.minDateTime !== null && dp_date){
			var minDateTime = this._defaults.minDateTime,
				minDateTimeDate = new Date(minDateTime.getFullYear(), minDateTime.getMonth(), minDateTime.getDate(), 0, 0, 0, 0);

			if(this.hourMinOriginal === null || this.minuteMinOriginal === null || this.secondMinOriginal === null){
				this.hourMinOriginal = o.hourMin;
				this.minuteMinOriginal = o.minuteMin;
				this.secondMinOriginal = o.secondMin;
			}

			if(dp_inst.settings.timeOnly || minDateTimeDate.getTime() == dp_date.getTime()) {
				this._defaults.hourMin = minDateTime.getHours();
				if (this.hour <= this._defaults.hourMin) {
					this.hour = this._defaults.hourMin;
					this._defaults.minuteMin = minDateTime.getMinutes();
					if (this.minute <= this._defaults.minuteMin) {
						this.minute = this._defaults.minuteMin;
						this._defaults.secondMin = minDateTime.getSeconds();
					} else {
						if(this.second < this._defaults.secondMin) this.second = this._defaults.secondMin;
						this._defaults.secondMin = this.secondMinOriginal;
					}
				} else {
					this._defaults.minuteMin = this.minuteMinOriginal;
					this._defaults.secondMin = this.secondMinOriginal;
				}
			}else{
				this._defaults.hourMin = this.hourMinOriginal;
				this._defaults.minuteMin = this.minuteMinOriginal;
				this._defaults.secondMin = this.secondMinOriginal;
			}
		}

		if(this._defaults.maxDateTime !== null && dp_date){
			var maxDateTime = this._defaults.maxDateTime,
				maxDateTimeDate = new Date(maxDateTime.getFullYear(), maxDateTime.getMonth(), maxDateTime.getDate(), 0, 0, 0, 0);
	
			if(this.hourMaxOriginal === null || this.minuteMaxOriginal === null || this.secondMaxOriginal === null){
				this.hourMaxOriginal = o.hourMax;
				this.minuteMaxOriginal = o.minuteMax;
				this.secondMaxOriginal = o.secondMax;
			}

			if(dp_inst.settings.timeOnly || maxDateTimeDate.getTime() == dp_date.getTime()){
				this._defaults.hourMax = maxDateTime.getHours();
				if (this.hour >= this._defaults.hourMax) {
					this.hour = this._defaults.hourMax;
					this._defaults.minuteMax = maxDateTime.getMinutes();
					if (this.minute >= this._defaults.minuteMax) {
						this.minute = this._defaults.minuteMax;
						this._defaults.secondMin = maxDateTime.getSeconds();
					} else {
						if(this.second > this._defaults.secondMax) this.second = this._defaults.secondMax;
						this._defaults.secondMax = this.secondMaxOriginal;
					}
				} else {
					this._defaults.minuteMax = this.minuteMaxOriginal;
					this._defaults.secondMax = this.secondMaxOriginal;
				}
			}else{
				this._defaults.hourMax = this.hourMaxOriginal;
				this._defaults.minuteMax = this.minuteMaxOriginal;
				this._defaults.secondMax = this.secondMaxOriginal;
			}
		}

		if(adjustSliders !== undefined && adjustSliders === true){
			this.hour_slider.slider("option", { min: this._defaults.hourMin, max: this._defaults.hourMax }).slider('value', this.hour);
			this.minute_slider.slider("option", { min: this._defaults.minuteMin, max: this._defaults.minuteMax }).slider('value', this.minute);
			this.second_slider.slider("option", { min: this._defaults.secondMin, max: this._defaults.secondMax }).slider('value', this.second);
		}

	},

	
	//########################################################################
	// when a slider moves, set the internal time...
	// on time change is also called when the time is updated in the text field
	//########################################################################
	_onTimeChange: function() {
		var hour   = (this.hour_slider) ? this.hour_slider.slider('value') : false,
			minute = (this.minute_slider) ? this.minute_slider.slider('value') : false,
			second = (this.second_slider) ? this.second_slider.slider('value') : false,
			timezone = (this.timezone_select) ? this.timezone_select.val() : false
		
		if (hour !== false) hour = parseInt(hour,10);
		if (minute !== false) minute = parseInt(minute,10);
		if (second !== false) second = parseInt(second,10);

		var ampm = (hour < 12) ? 'AM' : 'PM';
			
		// If the update was done in the input field, the input field should not be updated.
		// If the update was done using the sliders, update the input field.
		var hasChanged = (hour != this.hour || minute != this.minute || second != this.second || (this.ampm.length > 0 && this.ampm != ampm) || timezone != this.timezone);
		
		if (hasChanged) {

			if (hour !== false)this.hour = hour;
			if (minute !== false) this.minute = minute;
			if (second !== false) this.second = second;
			if (timezone !== false) this.timezone = timezone;
			this._limitMinMaxDateTime(this.inst, true);
		}
		if (this._defaults.ampm) this.ampm = ampm;
		
		this._formatTime();
		if (this.$timeObj) this.$timeObj.text(this.formattedTime);
		this.timeDefined = true;
		if (hasChanged) this._updateDateTime();
	},
    
	//########################################################################
	// call custom onSelect. 
	// bind to sliders slidestop, and grid click.
	//########################################################################
	_onSelectHandler: function() {
		var onSelect = this._defaults['onSelect'];
		var inputEl = this.$input ? this.$input[0] : null;
		if (onSelect && inputEl) {
			onSelect.apply(inputEl, [this.formattedDateTime, this]);
		}
	},

	//########################################################################
	// format the time all pretty...
	//########################################################################
	_formatTime: function(time, format, ampm) {
		if (ampm == undefined) ampm = this._defaults.ampm;
		time = time || { hour: this.hour, minute: this.minute, second: this.second, ampm: this.ampm, timezone: this.timezone };
		var tmptime = format || this._defaults.timeFormat.toString();

		if (ampm) {
			var hour12 = ((time.ampm == 'AM') ? (time.hour) : (time.hour % 12));
			hour12 = (Number(hour12) === 0) ? 12 : hour12;
			tmptime = tmptime.toString()
				.replace(/hh/g, ((hour12 < 10) ? '0' : '') + hour12)
				.replace(/h/g, hour12)
				.replace(/mm/g, ((time.minute < 10) ? '0' : '') + time.minute)
				.replace(/m/g, time.minute)
				.replace(/ss/g, ((time.second < 10) ? '0' : '') + time.second)
				.replace(/s/g, time.second)
				.replace(/TT/g, time.ampm.toUpperCase())
				.replace(/tt/g, time.ampm.toLowerCase())
				.replace(/T/g, time.ampm.charAt(0).toUpperCase())
				.replace(/t/g, time.ampm.charAt(0).toLowerCase())
				.replace(/z/g, time.timezone);
		} else {
			tmptime = tmptime.toString()
				.replace(/hh/g, ((time.hour < 10) ? '0' : '') + time.hour)
				.replace(/h/g, time.hour)
				.replace(/mm/g, ((time.minute < 10) ? '0' : '') + time.minute)
				.replace(/m/g, time.minute)
				.replace(/ss/g, ((time.second < 10) ? '0' : '') + time.second)
				.replace(/s/g, time.second)
				.replace(/z/g, time.timezone);
			tmptime = $.trim(tmptime.replace(/t/gi, ''));
		}

		if (arguments.length) return tmptime;
		else this.formattedTime = tmptime;
	},

	//########################################################################
	// update our input with the new date time..
	//########################################################################
	_updateDateTime: function(dp_inst) {
		dp_inst = this.inst || dp_inst,
			dt = new Date(dp_inst.selectedYear, dp_inst.selectedMonth, dp_inst.selectedDay),
			dateFmt = $.datepicker._get(dp_inst, 'dateFormat'),
			formatCfg = $.datepicker._getFormatConfig(dp_inst),
			timeAvailable = dt !== null && this.timeDefined;
		this.formattedDate = $.datepicker.formatDate(dateFmt, (dt === null ? new Date() : dt), formatCfg);
		var formattedDateTime = this.formattedDate;
		if (dp_inst.lastVal !== undefined && (dp_inst.lastVal.length > 0 && this.$input.val().length === 0))
			return;

		if (this._defaults.timeOnly === true) {
			formattedDateTime = this.formattedTime;
		} else if (this._defaults.timeOnly !== true && (this._defaults.alwaysSetTime || timeAvailable)) {
			formattedDateTime += this._defaults.separator + this.formattedTime;
		}

		this.formattedDateTime = formattedDateTime;

		if(!this._defaults.showTimepicker) {
			this.$input.val(this.formattedDate);
		} else if (this.$altInput && this._defaults.altFieldTimeOnly === true) {
			this.$altInput.val(this.formattedTime);
			this.$input.val(this.formattedDate);
		} else if(this.$altInput) {
			this.$altInput.val(formattedDateTime);
			this.$input.val(formattedDateTime);
		} else {
			this.$input.val(formattedDateTime);
		}
		
		this.$input.trigger("change");
	}

});

$.fn.extend({
	//########################################################################
	// shorthand just to use timepicker..
	//########################################################################
	timepicker: function(o) {
		o = o || {};
		var tmp_args = arguments;

		if (typeof o == 'object') tmp_args[0] = $.extend(o, { timeOnly: true });

		return $(this).each(function() {
			$.fn.datetimepicker.apply($(this), tmp_args);
		});
	},

	//########################################################################
	// extend timepicker to datepicker
	//########################################################################
	datetimepicker: function(o) {
		o = o || {};
		var $input = this,
		tmp_args = arguments;

		if (typeof(o) == 'string'){
			if(o == 'getDate') 
				return $.fn.datepicker.apply($(this[0]), tmp_args);
			else 
				return this.each(function() {
					var $t = $(this);
					$t.datepicker.apply($t, tmp_args);
				});
		}
		else
			return this.each(function() {
				var $t = $(this);
				$t.datepicker($.timepicker._newInst($t, o)._defaults);
			});
	}
});

//########################################################################
// the bad hack :/ override datepicker so it doesnt close on select
// inspired: http://stackoverflow.com/questions/1252512/jquery-datepicker-prevent-closing-picker-when-clicking-a-date/1762378#1762378
//########################################################################
$.datepicker._base_selectDate = $.datepicker._selectDate;
$.datepicker._selectDate = function (id, dateStr) {
	var inst = this._getInst($(id)[0]),
		tp_inst = this._get(inst, 'timepicker');

	if (tp_inst) {
		tp_inst._limitMinMaxDateTime(inst, true);
		inst.inline = inst.stay_open = true;
		//This way the onSelect handler called from calendarpicker get the full dateTime
		this._base_selectDate(id, dateStr + tp_inst._defaults.separator + tp_inst.formattedTime);
		inst.inline = inst.stay_open = false;
		this._notifyChange(inst);
		this._updateDatepicker(inst);
	}
	else this._base_selectDate(id, dateStr);
};

//#############################################################################################
// second bad hack :/ override datepicker so it triggers an event when changing the input field
// and does not redraw the datepicker on every selectDate event
//#############################################################################################
$.datepicker._base_updateDatepicker = $.datepicker._updateDatepicker;
$.datepicker._updateDatepicker = function(inst) {
	if (typeof(inst.stay_open) !== 'boolean' || inst.stay_open === false) {
				
		this._base_updateDatepicker(inst);
		
		// Reload the time control when changing something in the input text field.
		var tp_inst = this._get(inst, 'timepicker');
		if(tp_inst) tp_inst._addTimePicker(inst);
	}
};

//#######################################################################################
// third bad hack :/ override datepicker so it allows spaces and colan in the input field
//#######################################################################################
$.datepicker._base_doKeyPress = $.datepicker._doKeyPress;
$.datepicker._doKeyPress = function(event) {
	var inst = $.datepicker._getInst(event.target),
		tp_inst = $.datepicker._get(inst, 'timepicker');

	if (tp_inst) {
		if ($.datepicker._get(inst, 'constrainInput')) {
			var ampm = tp_inst._defaults.ampm,
				datetimeChars = tp_inst._defaults.timeFormat.toString()
								.replace(/[hms]/g, '')
								.replace(/TT/g, ampm ? 'APM' : '')
								.replace(/T/g, ampm ? 'AP' : '')
								.replace(/tt/g, ampm ? 'apm' : '')
								.replace(/t/g, ampm ? 'ap' : '') +
								" " +
								tp_inst._defaults.separator +
								$.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat')),
				chr = String.fromCharCode(event.charCode === undefined ? event.keyCode : event.charCode);
			return event.ctrlKey || (chr < ' ' || !datetimeChars || datetimeChars.indexOf(chr) > -1);
		}
	}
	
	return $.datepicker._base_doKeyPress(event);
};

//#######################################################################################
// Override key up event to sync manual input changes.
//#######################################################################################
$.datepicker._base_doKeyUp = $.datepicker._doKeyUp;
$.datepicker._doKeyUp = function (event) {
	var inst = $.datepicker._getInst(event.target),
		tp_inst = $.datepicker._get(inst, 'timepicker');

	if (tp_inst) {
		if (tp_inst._defaults.timeOnly && (inst.input.val() != inst.lastVal)) {
			try {
				$.datepicker._updateDatepicker(inst);
			}
			catch (err) {
				$.datepicker.log(err);
			}
		}
	}

	return $.datepicker._base_doKeyUp(event);
};

//#######################################################################################
// override "Today" button to also grab the time.
//#######################################################################################
$.datepicker._base_gotoToday = $.datepicker._gotoToday;
$.datepicker._gotoToday = function(id) {
	this._base_gotoToday(id);
	this._setTime(this._getInst($(id)[0]), new Date());
};

//#######################################################################################
// Disable & enable the Time in the datetimepicker
//#######################################################################################
$.datepicker._disableTimepickerDatepicker = function(target, date, withDate) {
	var inst = this._getInst(target),
	tp_inst = this._get(inst, 'timepicker');
	$(target).datepicker('getDate'); // Init selected[Year|Month|Day]
	if (tp_inst) {
		tp_inst._defaults.showTimepicker = false;
		tp_inst._updateDateTime(inst);
	}
};

$.datepicker._enableTimepickerDatepicker = function(target, date, withDate) {
	var inst = this._getInst(target),
	tp_inst = this._get(inst, 'timepicker');
	$(target).datepicker('getDate'); // Init selected[Year|Month|Day]
	if (tp_inst) {
		tp_inst._defaults.showTimepicker = true;
		tp_inst._addTimePicker(inst); // Could be disabled on page load
		tp_inst._updateDateTime(inst);
	}
};

//#######################################################################################
// Create our own set time function
//#######################################################################################
$.datepicker._setTime = function(inst, date) {
	var tp_inst = this._get(inst, 'timepicker');
	if (tp_inst) {
		var defaults = tp_inst._defaults,
			// calling _setTime with no date sets time to defaults
			hour = date ? date.getHours() : defaults.hour,
			minute = date ? date.getMinutes() : defaults.minute,
			second = date ? date.getSeconds() : defaults.second;

		//check if within min/max times..
		if ((hour < defaults.hourMin || hour > defaults.hourMax) || (minute < defaults.minuteMin || minute > defaults.minuteMax) || (second < defaults.secondMin || second > defaults.secondMax)) {
			hour = defaults.hourMin;
			minute = defaults.minuteMin;
			second = defaults.secondMin;
		}

		if (tp_inst.hour_slider) tp_inst.hour_slider.slider('value', hour);
		else tp_inst.hour = hour;
		if (tp_inst.minute_slider) tp_inst.minute_slider.slider('value', minute);
		else tp_inst.minute = minute;
		if (tp_inst.second_slider) tp_inst.second_slider.slider('value', second);
		else tp_inst.second = second;

		tp_inst._onTimeChange();
		tp_inst._updateDateTime(inst);
	}
};

//#######################################################################################
// Create new public method to set only time, callable as $().datepicker('setTime', date)
//#######################################################################################
$.datepicker._setTimeDatepicker = function(target, date, withDate) {
	var inst = this._getInst(target),
		tp_inst = this._get(inst, 'timepicker');

	if (tp_inst) {
		this._setDateFromField(inst);
		var tp_date;
		if (date) {
			if (typeof date == "string") {
				tp_inst._parseTime(date, withDate);
				tp_date = new Date();
				tp_date.setHours(tp_inst.hour, tp_inst.minute, tp_inst.second);
			}
			else tp_date = new Date(date.getTime());
			if (tp_date.toString() == 'Invalid Date') tp_date = undefined;
			this._setTime(inst, tp_date);
		}
	}

};

//#######################################################################################
// override setDate() to allow setting time too within Date object
//#######################################################################################
$.datepicker._base_setDateDatepicker = $.datepicker._setDateDatepicker;
$.datepicker._setDateDatepicker = function(target, date) {
	var inst = this._getInst(target),
	tp_date = (date instanceof Date) ? new Date(date.getTime()) : date;

	this._updateDatepicker(inst);
	this._base_setDateDatepicker.apply(this, arguments);
	this._setTimeDatepicker(target, tp_date, true);
};

//#######################################################################################
// override getDate() to allow getting time too within Date object
//#######################################################################################
$.datepicker._base_getDateDatepicker = $.datepicker._getDateDatepicker;
$.datepicker._getDateDatepicker = function(target, noDefault) {
	var inst = this._getInst(target),
		tp_inst = this._get(inst, 'timepicker');

	if (tp_inst) {
		this._setDateFromField(inst, noDefault);
		var date = this._getDate(inst);
		if (date && tp_inst._parseTime($(target).val(), true)) date.setHours(tp_inst.hour, tp_inst.minute, tp_inst.second);
		return date;
	}
	return this._base_getDateDatepicker(target, noDefault);
};

//#######################################################################################
// jQuery extend now ignores nulls!
//#######################################################################################
function extendRemove(target, props) {
	$.extend(target, props);
	for (var name in props)
		if (props[name] === null || props[name] === undefined)
			target[name] = props[name];
	return target;
}

$.timepicker = new Timepicker(); // singleton instance
$.timepicker.version = "0.9.4";

})(jQuery);
