/*
* jQuery timepicker addon
* By: Trent Richardson [http://trentrichardson.com]
* Version 0.3
* Last Modified: 5/7/2010
* Modified by : RWA
* 
* Copyright 2010 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 dl{ text-align: left; }
* #ui-timepicker-div dl dt{ height: 25px; }
* #ui-timepicker-div dl dd{ margin: -25px 0 10px 65px; }
*/
(function ($) {
	function Timepicker() { }

	Timepicker.prototype = {
		$input: null,
		$timeObj: null,
		inst: null,
		hour_slider: null,
		minute_slider: null,
		second_slider: null,
		hour: 0,
		minute: 0,
		second: 0,
		ampm: '',
		formattedDate: '',
		formattedTime: '',
		formattedDateTime: '',
		defaults: {
			holdDatepickerOpen: true,
			showButtonPanel: true,
			timeOnly: false,
			showHour: true,
			showMinute: true,
			showSecond: false,
			stepHour: .05,
			stepMinute: .05,
			stepSecond: .05,
			ampm: false,
			hour: 0,
			minute: 0,
			second: 0,
			timeFormat: 'hh:mm tt',
            // localization
            locChoose: 'Choose Time',
            locTime: 'Time',
            locHour: 'Hour',
            locMinute: 'Minute',
            locSecond: 'Second'
		},

		//########################################################################
		// add our sliders to the calendar
		//########################################################################
		addTimePicker: function (dp_inst) {
			var tp_inst = this;
			var currDT = this.$input.val();
			var regstr = this.defaults.timeFormat.toString()
							.replace(/h{1,2}/ig, '(\\d?\\d)')
							.replace(/m{1,2}/ig, '(\\d?\\d)')
							.replace(/s{1,2}/ig, '(\\d?\\d)')
							.replace(/t{1,2}/ig, '(am|pm|a|p)?')
							.replace(/\s/g, '\\s?') + '$';
			
			var order = this.getFormatPositions();
			var treg = currDT.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 = treg[order.h];
				}
				
				if (order.m !== -1)
					this.minute = treg[order.m];
				
				if (order.s !== -1)
					this.second = treg[order.s];
			}
			
			// wait for datepicker to create itself.. 60% of the time it works every time..
			setTimeout(function () {
				tp_inst.injectTimePicker(dp_inst, tp_inst);
			}, 10);
		},

		//########################################################################
		// 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})/g);
			var orders = { h: -1, m: -1, s: -1, t: -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 (dp_inst, tp_inst) {
			var $dp = $('#' + $.datepicker._mainDivId);
			
			// Prevent displaying twice
			if ($dp.find("div#ui-timepicker-div").length == 0) {
				var html = '<div id="ui-timepicker-div">' +
						'<dl>' +
							'<dt id="ui_tpicker_time_label">'+tp_inst.defaults.locTime+'</dt>' +
							'<dd id="ui_tpicker_time"></dd>' +
							'<dt id="ui_tpicker_hour_label"' + ((tp_inst.defaults.showHour) ? '' : ' style="display:none;"') + '>'+tp_inst.defaults.locHour+'</dt>' +
							'<dd id="ui_tpicker_hour"' + ((tp_inst.defaults.showHour) ? '' : ' style="display:none;"') + '></dd>' +
							'<dt id="ui_tpicker_minute_label"' + ((tp_inst.defaults.showMinute) ? '' : ' style="display:none;"') + '>'+tp_inst.defaults.locMinute+'</dt>' +
							'<dd id="ui_tpicker_minute"' + ((tp_inst.defaults.showMinute) ? '' : ' style="display:none;"') + '></dd>' +
							'<dt id="ui_tpicker_second_label"' + ((tp_inst.defaults.showSecond) ? '' : ' style="display:none;"') + '>'+tp_inst.defaults.locSecond+'</dt>' +
							'<dd id="ui_tpicker_second"' + ((tp_inst.defaults.showSecond) ? '' : ' style="display:none;"') + '></dd>' +
						'</dl>' +
					'</div>';
				
				$tp = $(html);
				
				if (tp_inst.defaults.timeOnly == true) { // if we only want time picker
					$tp.prepend('<div class="ui-widget-header ui-helper-clearfix ui-corner-all"><div class="ui-datepicker-title">'+tp_inst.defaults.locChoose+'</div></div>');
					$dp.find('.ui-datepicker-header, .ui-datepicker-calendar, .ui-datepicker-current').hide();
				}
				
				tp_inst.hour_slider = $tp.find('#ui_tpicker_hour').slider({ orientation: "horizontal", value: tp_inst.hour, max: 23, step: tp_inst.defaults.stepHour, slide: function () { tp_inst.onTimeChange(dp_inst, tp_inst); } });
				tp_inst.minute_slider = $tp.find('#ui_tpicker_minute').slider({ orientation: "horizontal", value: tp_inst.minute, max: 59, step: tp_inst.defaults.stepMinute, slide: function () { tp_inst.onTimeChange(dp_inst, tp_inst); } });
				tp_inst.second_slider = $tp.find('#ui_tpicker_second').slider({ orientation: "horizontal", value: tp_inst.second, max: 59, step: tp_inst.defaults.stepSecond, slide: function () { tp_inst.onTimeChange(dp_inst, tp_inst); } });
				
				$dp.find('.ui-datepicker-calendar').after($tp);
				tp_inst.$timeObj = $('#ui_tpicker_time');
				
				if (dp_inst != null) {
					tp_inst.onTimeChange(dp_inst, tp_inst);
				}
			}
		},

		//########################################################################
		// when a slider moves..
		// on time change is also called when the time is updated in the text field
		//########################################################################
		onTimeChange: function (dp_inst, tp_inst) {
			var hour = tp_inst.hour_slider.slider('value');
			var minute = tp_inst.minute_slider.slider('value');
			var second = tp_inst.second_slider.slider('value');
			var ampm = (tp_inst.hour < 12) ? 'AM' : 'PM';
			
			var hasChanged = false;
			
			// if the update was done in the input field, this field should not be updated
			// if the update was done using the sliders, update the input field
			if (tp_inst.hour != hour || tp_inst.minute != minute || tp_inst.second != second || (tp_inst.ampm.length > 0 && tp_inst.ampm != ampm))
			hasChanged = true;
			
			tp_inst.hour = parseFloat(hour).toFixed(0);
			tp_inst.minute = parseFloat(minute).toFixed(0);
			tp_inst.second = parseFloat(second).toFixed(0);
			tp_inst.ampm = ampm;
			
			tp_inst.formatTime(tp_inst);
			
			tp_inst.$timeObj.text(tp_inst.formattedTime);
			
			// Update the time in the textbox if it was changed
			if (hasChanged)
				tp_inst.updateDateTime(dp_inst, tp_inst);
		},

		//########################################################################
		// format the time all pretty...
		//########################################################################
		formatTime: function (inst) {
			var tmptime = inst.defaults.timeFormat.toString();
			var hour12 = ((inst.ampm == 'AM') ? (inst.hour) : (inst.hour % 12));
			hour12 = (hour12 == 0) ? 12 : hour12;
			
			if (inst.defaults.ampm == true) {
				tmptime = tmptime.toString()
					.replace(/hh/g, ((hour12 < 10) ? '0' : '') + hour12)
					.replace(/h/g, hour12)
					.replace(/mm/g, ((inst.minute < 10) ? '0' : '') + inst.minute)
					.replace(/m/g, inst.minute)
					.replace(/ss/g, ((inst.second < 10) ? '0' : '') + inst.second)
					.replace(/s/g, inst.second)
					.replace(/TT/g, inst.ampm.toUpperCase())
					.replace(/tt/g, inst.ampm.toLowerCase())
					.replace(/T/g, inst.ampm.charAt(0).toUpperCase())
					.replace(/t/g, inst.ampm.charAt(0).toLowerCase());
			}
			else {
				tmptime = tmptime.toString()
					.replace(/hh/g, ((inst.hour < 10) ? '0' : '') + inst.hour)
					.replace(/h/g, inst.hour)
					.replace(/mm/g, ((inst.minute < 10) ? '0' : '') + inst.minute)
					.replace(/m/g, inst.minute)
					.replace(/ss/g, ((inst.second < 10) ? '0' : '') + inst.second)
					.replace(/s/g, inst.second);
				tmptime = $.trim(tmptime.replace(/t/gi, ''));
			}
			
			inst.formattedTime = tmptime;
			return inst.formattedTime;
		},

		//########################################################################
		// update our input with the new date time..
		//########################################################################
		updateDateTime: function (dp_inst, tp_inst) {
			var dt = this.$input.datepicker('getDate');
			
			if (dt == null)
				this.formattedDate = $.datepicker.formatDate($.datepicker._get(dp_inst, 'dateFormat'), new Date(), $.datepicker._getFormatConfig(dp_inst));
			else this.formattedDate = $.datepicker.formatDate($.datepicker._get(dp_inst, 'dateFormat'), dt, $.datepicker._getFormatConfig(dp_inst));
			
			this.formattedDateTime = this.formattedDate + ' ' + this.formattedTime;
			
			if (this.defaults.timeOnly == true)
				this.$input.val(this.formattedTime);
			else this.$input.val(this.formattedDateTime);
		}
	};

	//########################################################################
	// extend timepicker to datepicker
	//########################################################################		
	jQuery.fn.datetimepicker = function (o) {
		var tp = new Timepicker();
		
		if (o == undefined)
			o = {};
		
		tp.defaults = $.extend({}, tp.defaults, o);
		
		tp.defaults = $.extend({}, tp.defaults, {
			beforeShow: function (input, inst) {
				tp.hour = tp.defaults.hour;
				tp.minute = tp.defaults.minute;
				tp.second = tp.defaults.second;
				tp.ampm = '';
				tp.$input = $(input);
				tp.inst = inst;
				
				tp.addTimePicker(inst);
			
				if ($.isFunction(o['beforeShow'])) o.beforeShow(input, inst);
			},
			onChangeMonthYear: function (year, month, inst) {
				tp.addTimePicker(inst);
				// Update the time as well : this prevents the time from disappearing from the input field.
				tp.updateDateTime(inst, tp);
			
				if ($.isFunction(o['onChangeMonthYear'])) o.onChangeMonthYear(year, month, inst);
			},
			onClose: function (dateText, inst) {
				tp.updateDateTime(inst, tp);
			
				if ($.isFunction(o['onClose'])) o.onClose(dateText, inst);
			}
		});
		
		$(this).datepicker(tp.defaults);
	};

	//########################################################################
	// shorthand just to use timepicker..
	//########################################################################
	jQuery.fn.timepicker = function (o) {
		o = $.extend(o, { timeOnly: true });
	
		$(this).datetimepicker(o);
	};

	//########################################################################
	// the bad hack :/ override datepicker so it doesnt close on select
	//########################################################################
	$.datepicker._selectDate = function (id, dateStr) {
		var target = $(id);
		var inst = this._getInst(target[0]);
		var holdDatepickerOpen = (this._get(inst, 'holdDatepickerOpen') === true) ? true : false; // this line for timepicker..
		dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
		
		if (inst.input)
			inst.input.val(dateStr);
		this._updateAlternate(inst);
		var onSelect = this._get(inst, 'onSelect');
		if (onSelect)
			onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
		else if (inst.input)
			inst.input.trigger('change'); // fire the change event
		if (inst.inline)
			this._updateDatepicker(inst);
		else if (holdDatepickerOpen) { } // this line for timepicker..
		else {
			this._hideDatepicker();
			this._lastInput = inst.input[0];
			if (typeof (inst.input[0]) != 'object')
				inst.input.focus(); // restore focus
			this._lastInput = null;
		}
		
		this._notifyChange(inst);
	};


	//#############################################################################################
	// second bad hack :/ override datepicker so it triggers an event when changing the input field
	//#############################################################################################
	/* Generate the date picker content. */
	$.datepicker._updateDatepicker = function (inst) {
		var self = this;
		var borders = $.datepicker._getBorders(inst.dpDiv);
		inst.dpDiv.empty().append(this._generateHTML(inst))
			.find('iframe.ui-datepicker-cover') // IE6- only
				.css({ left: -borders[0], top: -borders[1],
					width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()
				})
			.end()
			.find('button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a')
				.bind('mouseout', function () {
					$(this).removeClass('ui-state-hover');
					if (this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
					if (this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
				})
				.bind('mouseover', function () {
					if (!self._isDisabledDatepicker(inst.inline ? inst.dpDiv.parent()[0] : inst.input[0])) {
						$(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
						$(this).addClass('ui-state-hover');
						if (this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
						if (this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
					}
				})
			.end()
			.find('.' + this._dayOverClass + ' a')
				.trigger('mouseover')
			.end();
		var numMonths = this._getNumberOfMonths(inst);
		var cols = numMonths[1];
		var width = 17;
		if (cols > 1)
			inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
		else
			inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
		inst.dpDiv[(numMonths[0] != 1 || numMonths[1] != 1 ? 'add' : 'remove') +
			'Class']('ui-datepicker-multi');
		inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
			'Class']('ui-datepicker-rtl');
		if (inst == $.datepicker._curInst && $.datepicker._datepickerShowing && inst.input &&
				inst.input.is(':visible') && !inst.input.is(':disabled'))
			inst.input.focus();

		// Reload the time control when changing something in the input text field.
		this._beforeShow(inst.input, inst);
	};

	$.datepicker._beforeShow = function (input, inst) {
		var beforeShow = this._get(inst, 'beforeShow');
		if (beforeShow)
			beforeShow.apply((inst.input ? inst.input[0] : null), [inst.input, inst]);
	};

	//#######################################################################################
	// third bad hack :/ override datepicker so it allows spaces and colan in the input field
	//#######################################################################################
	$.datepicker._doKeyPress = function (event) {
		var inst = $.datepicker._getInst(event.target);
		if ($.datepicker._get(inst, 'constrainInput')) {
			var dateChars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
			var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
			// keyCode == 58 => ":"
			// keyCode == 32 => " "
			return event.ctrlKey || (chr < ' ' || !dateChars || dateChars.indexOf(chr) > -1 || event.keyCode == 58 || event.keyCode == 32);
		}    
	};
	
})(jQuery);