dojo.provide("dojox.widget.Calendar");
dojo.experimental("dojox.widget.Calendar");

dojo.require("dijit.Calendar");
dojo.require("dijit._Container");

dojo.declare("dojox.widget._CalendarBase", [dijit._Widget, dijit._Templated, dijit._Container], {
	// summary:
	//		The Root class for all _Calendar extensions

	// templateString: String
	//		The template to be used to construct the widget.
	templateString: dojo.cache("dojox.widget","Calendar/Calendar.html"),

	// _views: Array
	//		The list of mixin views available on this calendar.
	_views: null,

	// useFx: Boolean
	//		Specifies if visual effects should be applied to the widget.
	//		The default behavior of the widget does not contain any effects.
	//		The dojox.widget.CalendarFx package is needed for these.
	useFx: true,

	// widgetsInTemplate: Boolean
	//		This widget is a container of other widgets, so this is true.
	widgetsInTemplate: true,

	// value: Date
	//		The currently selected Date
	value: new Date(),

	constraints: null,

	// footerFormat: String
	//		The date format of the date displayed in the footer.	Can be
	//		'short', 'medium', and 'long'
	footerFormat: "medium",

	constructor: function(){
		this._views = [];
		this.value = new Date();
	},

	postMixInProperties: function(){
		var c = this.constraints;
		if(c){
			var fromISO = dojo.date.stamp.fromISOString;
			if(typeof c.min == "string"){
				c.min = fromISO(c.min);
			}
			if(typeof c.max == "string"){
				c.max = fromISO(c.max);
			}
		}
		this.value = this.parseInitialValue(this.value);
	},

	parseInitialValue: function(value){
		if (!value || value === -1){
			return new Date();
		}else if(value.getFullYear){
			return value;
		}else if (!isNaN(value)) {
			if (typeof this.value == "string") {
				value = parseInt(value);
			}
			value = this._makeDate(value);
		}
		return value;
	},

	_makeDate: function(value){
		return value;//new Date(value);
	},

	postCreate: function(){
		// summary:
		//		Instantiates the mixin views

		this.displayMonth = new Date(this.get('value'));

		if(this._isInvalidDate(this.displayMonth)){
			this.displayMonth = new Date();
		}

		var mixin = {
			parent: this,
			_getValueAttr: dojo.hitch(this, function(){return new Date(this._internalValue || this.value);}),
			_getDisplayMonthAttr: dojo.hitch(this, function(){return new Date(this.displayMonth);}),
			_getConstraintsAttr: dojo.hitch(this, function(){return this.constraints;}),
			getLang: dojo.hitch(this, function(){return this.lang;}),
			isDisabledDate: dojo.hitch(this, this.isDisabledDate),
			getClassForDate: dojo.hitch(this, this.getClassForDate),
			addFx: this.useFx ? dojo.hitch(this, this.addFx) : function(){}
		};

		//Add the mixed in views.
		dojo.forEach(this._views, function(widgetType){
			var widget = new widgetType(mixin, dojo.create('div'));
			this.addChild(widget);

			var header = widget.getHeader();
			if(header){
			//place the views's header node in the header of the main widget
				this.header.appendChild(header);

				//hide the header node of the widget
				dojo.style(header, "display", "none");
			}
			//Hide all views
			dojo.style(widget.domNode, "visibility", "hidden");

			//Listen for the values in a view to be selected
			dojo.connect(widget, "onValueSelected", this, "_onDateSelected");
			widget.set("value", this.get('value'));
		}, this);

		if(this._views.length < 2){
			dojo.style(this.header, "cursor", "auto");
		}

		this.inherited(arguments);

		// Cache the list of children widgets.
		this._children = this.getChildren();

		this._currentChild = 0;

		//Populate the footer with today's date.
		var today = new Date();

		this.footer.innerHTML = "Today: "
			+ dojo.date.locale.format(today, {
				formatLength:this.footerFormat,
				selector:'date',
				locale:this.lang});

		dojo.connect(this.footer, "onclick", this, "goToToday");

		var first = this._children[0];

		dojo.style(first.domNode, "top", "0px");
		dojo.style(first.domNode, "visibility", "visible");

		var header = first.getHeader();
		if(header){
			dojo.style(first.getHeader(), "display", "");
		}

		dojo[first.useHeader ? "removeClass" : "addClass"](this.container, "no-header");

		first.onDisplay();

		var _this = this;

		var typematic = function(nodeProp, dateProp, adj){
			dijit.typematic.addMouseListener(_this[nodeProp], _this, function(count){
				if(count >= 0){	_this._adjustDisplay(dateProp, adj);}
			}, 0.8, 500);
		};
		typematic("incrementMonth", "month", 1);
		typematic("decrementMonth", "month", -1);
		this._updateTitleStyle();
	},

	addFx: function(query, fromNode){
		// Stub function than can be overridden to add effects.
	},

	_isInvalidDate: function(/*Date*/ value){
		// summary:
		//		Runs various tests on the value, checking for invalid conditions
		// tags:
		//		private
		return !value || isNaN(value) || typeof value != "object" || value.toString() == this._invalidDate;
	},

	_setValueAttr: function(/*Date*/ value){
		// summary:
		//		Set the current date and update the UI.	If the date is disabled, the selection will
		//		not change, but the display will change to the corresponding month.
		if(!value){
			value = new Date();
		}
		if(!value["getFullYear"]){
			value = dojo.date.stamp.fromISOString(value + "");
		}
		if(this._isInvalidDate(value)){
			return false;
		}
		if(!this.value || dojo.date.compare(value, this.value)){
			value = new Date(value);
			this.displayMonth = new Date(value);
			this._internalValue = value;
			if(!this.isDisabledDate(value, this.lang) && this._currentChild == 0){
				this.value = value;
				this.onChange(value);
			}
			if (this._children && this._children.length > 0) {
				this._children[this._currentChild].set("value", this.value);
			}
			return true;
		}
		return false;
	},

	isDisabledDate: function(/*Date*/date, /*String?*/locale){
		// summary:
		//		May be overridden to disable certain dates in the calendar e.g. `isDisabledDate=dojo.date.locale.isWeekend`
		var c = this.constraints;
		var compare = dojo.date.compare;
		return c && (c.min && (compare(c.min, date, "date") > 0) ||
							(c.max && compare(c.max, date, "date") < 0));
	},

	onValueSelected: function(/*Date*/date){
		// summary:
		//		A date cell was selected. It may be the same as the previous value.
	},

	_onDateSelected: function(date, formattedValue, force){
		this.displayMonth = date;

		this.set("value", date)
		//Only change the selected value if it was chosen from the
		//first child.
		if(!this._transitionVert(-1)){
			if(!formattedValue && formattedValue !== 0){
				formattedValue = this.get('value');
			}
			this.onValueSelected(formattedValue);
		}

	},

	onChange: function(/*Date*/date){
		// summary:
		//		Called only when the selected date has changed
	},

	onHeaderClick: function(e){
		// summary:
		//	Transitions to the next view.
		this._transitionVert(1);
	},

	goToToday: function(){
		this.set("value", new Date());
		this.onValueSelected(this.get('value'));
	},

	_transitionVert: function(/*Number*/direction){
		// summary:
		//		Animates the views to show one and hide another, in a
		//		vertical direction.
		//		If 'direction' is 1, then the views slide upwards.
		//		If 'direction' is -1, the views slide downwards.
		var curWidget = this._children[this._currentChild];
		var nextWidget = this._children[this._currentChild + direction];
		if(!nextWidget){return false;}

		dojo.style(nextWidget.domNode, "visibility", "visible");

		var height = dojo.style(this.containerNode, "height");
		nextWidget.set("value", this.displayMonth);

		if(curWidget.header){
			dojo.style(curWidget.header, "display", "none");
		}
		if(nextWidget.header){
			dojo.style(nextWidget.header, "display", "");
		}
		dojo.style(nextWidget.domNode, "top", (height * -1) + "px");
		dojo.style(nextWidget.domNode, "visibility", "visible");

		this._currentChild += direction;

		var height1 = height * direction;
		var height2 = 0;
		dojo.style(nextWidget.domNode, "top", (height1 * -1) + "px");

		// summary: Slides two nodes vertically.
		var anim1 = dojo.animateProperty({
			node: curWidget.domNode,
			properties: {top: height1},
			onEnd: function(){
				dojo.style(curWidget.domNode, "visibility", "hidden");
			}
		});
		var anim2 = dojo.animateProperty({
			node: nextWidget.domNode,
			properties: {top: height2},
			onEnd: function(){
				nextWidget.onDisplay();
			}
		});

		dojo[nextWidget.useHeader ? "removeClass" : "addClass"](this.container, "no-header");

		anim1.play();
		anim2.play();
		curWidget.onBeforeUnDisplay()
		nextWidget.onBeforeDisplay();

		this._updateTitleStyle();
		return true;
	},

	_updateTitleStyle: function(){
		dojo[this._currentChild < this._children.length -1 ? "addClass" : "removeClass"](this.header, "navToPanel");
	},

	_slideTable: function(/*String*/widget, /*Number*/direction, /*Function*/callback){
		// summary:
		//		Animates the horizontal sliding of a table.
		var table = widget.domNode;

		//Clone the existing table
		var newTable = table.cloneNode(true);
		var left = dojo.style(table, "width");

		table.parentNode.appendChild(newTable);

		//Place the existing node either to the left or the right of the new node,
		//depending on which direction it is to slide.
		dojo.style(table, "left", (left * direction) + "px");

		//Call the function that generally populates the new cloned node with new data.
		//It may also attach event listeners.
		callback();

		//Animate the two nodes.
		var anim1 = dojo.animateProperty({node: newTable, properties:{left: left * direction * -1}, duration: 500, onEnd: function(){
			newTable.parentNode.removeChild(newTable);
		}});
		var anim2 = dojo.animateProperty({node: table, properties:{left: 0}, duration: 500});

		anim1.play();
		anim2.play();
	},

	_addView: function(view){
		//Insert the view at the start of the array.
		this._views.push(view);
	},

	getClassForDate: function(/*Date*/dateObject, /*String?*/locale){
		// summary:
		//		May be overridden to return CSS classes to associate with the date entry for the given dateObject,
		//		for example to indicate a holiday in specified locale.

/*=====
		return ""; // String
=====*/
	},

	_adjustDisplay: function(/*String*/part, /*int*/amount, noSlide){
		// summary:
		//		This function overrides the base function defined in dijit.Calendar.
		//		It changes the displayed years, months and days depending on the inputs.
		var child = this._children[this._currentChild];

		var month = this.displayMonth = child.adjustDate(this.displayMonth, amount);

		this._slideTable(child, amount, function(){
			child.set("value", month);
		});
	}
});

dojo.declare("dojox.widget._CalendarView", dijit._Widget, {
	// summary:
	//		Base implementation for all view mixins.
	//		All calendar views should extend this widget.
	headerClass: "",

	useHeader: true,

	cloneClass: function(clazz, n, before){
		// summary:
		//		Clones all nodes with the class 'clazz' in a widget
		var template = dojo.query(clazz, this.domNode)[0];
		var i;
		if(!before){
			for(i = 0; i < n; i++){
				template.parentNode.appendChild(template.cloneNode(true));
			}
		}else{
			var bNode = dojo.query(clazz, this.domNode)[0];
			for(i = 0; i < n; i++){
				template.parentNode.insertBefore(template.cloneNode(true), bNode);
			}
		}
	},

	_setText: function(node, text){
		// summary:
		//		Sets the text inside a node
		if(node.innerHTML != text){
			dojo.empty(node);
			node.appendChild(dojo.doc.createTextNode(text));
		}
	},

	getHeader: function(){
		// summary:
		//		Returns the header node of a view. If none exists,
		//		an empty DIV is created and returned.
		return this.header || (this.header = this.header = dojo.create("span", { "class":this.headerClass }));
	},

	onValueSelected: function(date){
		//Stub function called when a date is selected
	},

	adjustDate: function(date, amount){
		// summary:
		//		Adds or subtracts values from a date.
		//		The unit, e.g. "day", "month" or "year", is
		//		specified in the "datePart" property of the
		//		calendar view mixin.
		return dojo.date.add(date, this.datePart, amount);
	},

	onDisplay: function(){
		// summary:
		//		Stub function that can be used to tell a view when it is shown.
	},

	onBeforeDisplay: function(){
		// summary:
		//		Stub function that can be used to tell a view it is about to be shown.
	},

	onBeforeUnDisplay: function(){
		// summary:
		//		Stub function that can be used to tell
		//		a view when it is no longer shown.
	}
});

dojo.declare("dojox.widget._CalendarDay", null, {
	// summary:
	//		Mixin for the dojox.widget.Calendar which provides
	//		the standard day-view. A single month is shown at a time.
	parent: null,

	constructor: function(){
		this._addView(dojox.widget._CalendarDayView);
	}
});

dojo.declare("dojox.widget._CalendarDayView", [dojox.widget._CalendarView, dijit._Templated], {
	// summary: View class for the dojox.widget.Calendar.
	//		Adds a view showing every day of a single month to the calendar.
	//		This should not be mixed in directly with dojox.widget._CalendarBase.
	//		Instead, use dojox.widget._CalendarDay

	// templateString: String
	//		The template to be used to construct the widget.
	templateString: dojo.cache("dojox.widget","Calendar/CalendarDay.html"),

	// datePart: String
	//		Specifies how much to increment the displayed date when the user
	//		clicks the array button to increment of decrement the view.
	datePart: "month",

	// dayWidth: String
	//		Specifies the type of day name to display.	"narrow" causes just one letter to be shown.
	dayWidth: "narrow",

	postCreate: function(){
		// summary:
		//		Constructs the calendar view.
		this.cloneClass(".dijitCalendarDayLabelTemplate", 6);
		this.cloneClass(".dijitCalendarDateTemplate", 6);

		// now make 6 week rows
		this.cloneClass(".dijitCalendarWeekTemplate", 5);

		// insert localized day names in the header
		var dayNames = dojo.date.locale.getNames('days', this.dayWidth, 'standAlone', this.getLang());
		var dayOffset = dojo.cldr.supplemental.getFirstDayOfWeek(this.getLang());

		// Set the text of the day labels.
		dojo.query(".dijitCalendarDayLabel", this.domNode).forEach(function(label, i){
			this._setText(label, dayNames[(i + dayOffset) % 7]);
		}, this);
	},

	onDisplay: function(){
		if(!this._addedFx){
		// Add visual effects to the view, if any has been specified.
			this._addedFx = true;
			this.addFx(".dijitCalendarDateTemplate div", this.domNode);
		}
	},

	_onDayClick: function(e){
		// summary:
		//		Executed when a day value is clicked.

		// If the user somehow clicked the TR, rather than a
		// cell, ignore it.
		if(typeof(e.target._date) == "undefined"){return;}

		var date = new Date(this.get("displayMonth"));

		var p = e.target.parentNode;
		var c = "dijitCalendar";
		var d = dojo.hasClass(p, c + "PreviousMonth") ? -1 :
							(dojo.hasClass(p, c + "NextMonth") ? 1 : 0);
		if(d){date = dojo.date.add(date, "month", d)}
		date.setDate(e.target._date);

		// If the day is disabled, ignore it
		if(this.isDisabledDate(date)){
			dojo.stopEvent(e);
			return;
		}
		this.parent._onDateSelected(date);
	},

	_setValueAttr: function(value){
		//Change the day values
		this._populateDays();
	},

	_populateDays: function(){
		// summary:
		//		Fills the days of the current month.

		var currentDate = new Date(this.get("displayMonth"));
		currentDate.setDate(1);
		var firstDay = currentDate.getDay();
		var daysInMonth = dojo.date.getDaysInMonth(currentDate);
		var daysInPreviousMonth = dojo.date.getDaysInMonth(dojo.date.add(currentDate, "month", -1));
		var today = new Date();
		var selected = this.get('value');

		var dayOffset = dojo.cldr.supplemental.getFirstDayOfWeek(this.getLang());
		if(dayOffset > firstDay){ dayOffset -= 7; }

		var compareDate = dojo.date.compare;
		var templateCls = ".dijitCalendarDateTemplate";
		var selectedCls = "dijitCalendarSelectedDate";

		var oldDate = this._lastDate;
		var redrawRequired = oldDate == null
				|| oldDate.getMonth() != currentDate.getMonth()
				|| oldDate.getFullYear() != currentDate.getFullYear();
		this._lastDate = currentDate;

		// If still showing the same month, it's much faster to not redraw,
		// and just change the selected date.
		if(!redrawRequired){
			dojo.query(templateCls, this.domNode)
					.removeClass(selectedCls)
					.filter(function(node){
						return node.className.indexOf("dijitCalendarCurrent") > -1
									&& node._date == selected.getDate();
					})
					.addClass(selectedCls);
			return;
		}

		// Iterate through dates in the calendar and fill in date numbers and style info
		dojo.query(templateCls, this.domNode).forEach(function(template, i){
			i += dayOffset;
			var date = new Date(currentDate);
			var number, clazz = "dijitCalendar", adj = 0;

			if(i < firstDay){
				number = daysInPreviousMonth - firstDay + i + 1;
				adj = -1;
				clazz += "Previous";
			}else if(i >= (firstDay + daysInMonth)){
				number = i - firstDay - daysInMonth + 1;
				adj = 1;
				clazz += "Next";
			}else{
				number = i - firstDay + 1;
				clazz += "Current";
			}

			if(adj){
				date = dojo.date.add(date, "month", adj);
			}
			date.setDate(number);

			if(!compareDate(date, today, "date")){
				clazz = "dijitCalendarCurrentDate " + clazz;
			}

			if(!compareDate(date, selected, "date")
					&& !compareDate(date, selected, "month")
					&& !compareDate(date, selected, "year") ){
				clazz = selectedCls + " " + clazz;
			}

			if(this.isDisabledDate(date, this.getLang())){
				clazz = " dijitCalendarDisabledDate " + clazz;
			}

			var clazz2 = this.getClassForDate(date, this.getLang());
			if(clazz2){
				clazz = clazz2 + " " + clazz;
			}

			template.className = clazz + "Month dijitCalendarDateTemplate";
			template.dijitDateValue = date.valueOf();
			var label = dojo.query(".dijitCalendarDateLabel", template)[0];

			this._setText(label, date.getDate());

			label._date = label.parentNode._date = date.getDate();
		}, this);

		// Fill in localized month name
		var monthNames = dojo.date.locale.getNames('months', 'wide', 'standAlone', this.getLang());
		this._setText(this.monthLabelNode, monthNames[currentDate.getMonth()]);
		this._setText(this.yearLabelNode, currentDate.getFullYear());
	}
});


dojo.declare("dojox.widget._CalendarMonthYear", null, {
	// summary:
	//		Mixin class for adding a view listing all 12
	//		months of the year to the dojox.widget._CalendarBase

	constructor: function(){
		// summary:
		//		Adds a dojox.widget._CalendarMonthView view to the calendar widget.
		this._addView(dojox.widget._CalendarMonthYearView);
	}
});

dojo.declare("dojox.widget._CalendarMonthYearView", [dojox.widget._CalendarView, dijit._Templated], {
	// summary:
	//		A Calendar view listing the 12 months of the year

	// templateString: String
	//		The template to be used to construct the widget.
	templateString: dojo.cache("dojox.widget","Calendar/CalendarMonthYear.html"),

	// datePart: String
	//		Specifies how much to increment the displayed date when the user
	//		clicks the array button to increment of decrement the view.
	datePart: "year",

	// displayedYears: Number
	//		The number of years to display at once.
	displayedYears: 10,

	useHeader: false,

	postCreate: function(){
		this.cloneClass(".dojoxCal-MY-G-Template", 5, ".dojoxCal-MY-btns");
		this.monthContainer = this.yearContainer = this.myContainer;

		var yClass = "dojoxCalendarYearLabel";
		var dClass = "dojoxCalendarDecrease";
		var iClass = "dojoxCalendarIncrease";

		dojo.query("." + yClass, this.myContainer).forEach(function(node, idx){
			var clazz = iClass;
			switch(idx){
				case 0:
					clazz = dClass;
				case 1:
					dojo.removeClass(node, yClass);
					dojo.addClass(node, clazz);
					break;
			}
		});
		// Get the year increment and decrement buttons.
		this._decBtn = dojo.query('.' + dClass, this.myContainer)[0];
		this._incBtn = dojo.query('.' + iClass, this.myContainer)[0];

		dojo.query(".dojoxCal-MY-M-Template", this.domNode)
			.filter(function(item){
				return item.cellIndex == 1;
			})
			.addClass("dojoxCal-MY-M-last");

		dojo.connect(this, "onBeforeDisplay", dojo.hitch(this, function(){
			this._cachedDate = new Date(this.get("value").getTime());
			this._populateYears(this._cachedDate.getFullYear());
			this._populateMonths();
			this._updateSelectedMonth();
			this._updateSelectedYear();
		}));

		dojo.connect(this, "_populateYears", dojo.hitch(this, function(){
			this._updateSelectedYear();
		}));
		dojo.connect(this, "_populateMonths", dojo.hitch(this, function(){
			this._updateSelectedMonth();
		}));

		this._cachedDate = this.get("value");

		this._populateYears();
		this._populateMonths();

		// Add visual effects to the view, if any have been mixed in
		this.addFx(".dojoxCalendarMonthLabel,.dojoxCalendarYearLabel ", this.myContainer);
	},

	_setValueAttr: function(value){
		if (value && value.getFullYear()) {
			this._populateYears(value.getFullYear());
		}
	},

	getHeader: function(){
		return null;
	},

	_getMonthNames: function(format){
		// summary:
		//		Returns localized month names
		this._monthNames	= this._monthNames || dojo.date.locale.getNames('months', format, 'standAlone', this.getLang());
		return this._monthNames;
	},

	_populateMonths: function(){
		// summary:
		//		Populate the month names using the localized values.
		var monthNames = this._getMonthNames('abbr');
		dojo.query(".dojoxCalendarMonthLabel", this.monthContainer).forEach(dojo.hitch(this, function(node, cnt){
			this._setText(node, monthNames[cnt]);
		}));
		var constraints = this.get('constraints');

		if(constraints){
			var date = new Date();
			date.setFullYear(this._year);
			var min = -1, max = 12;
			if(constraints.min){
				var minY = constraints.min.getFullYear();
				if(minY > this._year){
					min = 12;
				}else if(minY == this._year){
					min = constraints.min.getMonth();
				}
			}
			if(constraints.max){
				var maxY = constraints.max.getFullYear();
				if(maxY < this._year){
					max = -1;
				}else if(maxY == this._year){
					max = constraints.max.getMonth();
				}
			}

			dojo.query(".dojoxCalendarMonthLabel", this.monthContainer)
				.forEach(dojo.hitch(this, function(node, cnt){
					dojo[(cnt < min || cnt > max) ? "addClass" : "removeClass"]
						(node, 'dijitCalendarDisabledDate');
			}));
		}

		var h = this.getHeader();
		if(h){
			this._setText(this.getHeader(), this.get("value").getFullYear());
		}
	},

	_populateYears: function(year){
		// summary:
		//		Fills the list of years with a range of 12 numbers, with the current year
		//		being the 6th number.
		var constraints = this.get('constraints');
		var dispYear = year || this.get("value").getFullYear();
		var firstYear = dispYear - Math.floor(this.displayedYears/2);
		var min = constraints && constraints.min ? constraints.min.getFullYear() : firstYear -10000;
		firstYear = Math.max(min, firstYear);

		// summary: Writes the years to display to the view
		this._displayedYear = dispYear;

		var yearLabels = dojo.query(".dojoxCalendarYearLabel", this.yearContainer);

		var max = constraints && constraints.max ? constraints.max.getFullYear() - firstYear :	yearLabels.length;
		var disabledClass = 'dijitCalendarDisabledDate';

		yearLabels.forEach(dojo.hitch(this, function(node, cnt){
			if(cnt <= max){
				this._setText(node, firstYear + cnt);
				dojo.removeClass(node, disabledClass);
			}else{
				dojo.addClass(node, disabledClass);
			}
		}));

		if(this._incBtn){
			dojo[max < yearLabels.length ? "addClass" : "removeClass"](this._incBtn, disabledClass);
		}
		if(this._decBtn){
			dojo[min >= firstYear ? "addClass" : "removeClass"](this._decBtn, disabledClass);
		}

		var h = this.getHeader();
		if(h){
			this._setText(this.getHeader(), firstYear + " - " + (firstYear + 11));
		}
	},

	_updateSelectedYear: function(){
		this._year = String((this._cachedDate || this.get("value")).getFullYear());
		this._updateSelectedNode(".dojoxCalendarYearLabel", dojo.hitch(this, function(node, idx){
			return this._year !== null && node.innerHTML == this._year;
		}));
	},

	_updateSelectedMonth: function(){
		var month = (this._cachedDate || this.get("value")).getMonth();
		this._month = month;
		this._updateSelectedNode(".dojoxCalendarMonthLabel", function(node, idx){
			return idx == month;
		});
	},

	_updateSelectedNode: function(query, filter){
		var sel = "dijitCalendarSelectedDate";
		dojo.query(query, this.domNode)
			.forEach(function(node, idx, array){
				dojo[filter(node, idx, array) ? "addClass" : "removeClass"](node.parentNode, sel);
		});
		var selMonth = dojo.query('.dojoxCal-MY-M-Template div', this.myContainer)
			.filter(function(node){
				return dojo.hasClass(node.parentNode, sel);
		})[0];
		if(!selMonth){return;}
		var disabled = dojo.hasClass(selMonth, 'dijitCalendarDisabledDate');

		dojo[disabled ? 'addClass' : 'removeClass'](this.okBtn, "dijitDisabled");
	},

	onClick: function(evt){
		// summary:
		//		Handles clicks on month names
		var clazz;
		var _this = this;
		var sel = "dijitCalendarSelectedDate";
		function hc(c){
			return dojo.hasClass(evt.target, c);
		}

		if(hc('dijitCalendarDisabledDate')){
			dojo.stopEvent(evt);
			return false;
		}

		if(hc("dojoxCalendarMonthLabel")){
			clazz = "dojoxCal-MY-M-Template";
			this._month = evt.target.parentNode.cellIndex + (evt.target.parentNode.parentNode.rowIndex * 2);
			this._cachedDate.setMonth(this._month);
			this._updateSelectedMonth();
		}else if(hc( "dojoxCalendarYearLabel")){
			clazz = "dojoxCal-MY-Y-Template";
			this._year = Number(evt.target.innerHTML);
			this._cachedDate.setYear(this._year);
			this._populateMonths();
			this._updateSelectedYear();
		}else if(hc("dojoxCalendarDecrease")){
			this._populateYears(this._displayedYear - 10);
			return true;
		}else if(hc("dojoxCalendarIncrease")){
			this._populateYears(this._displayedYear + 10);
			return true;
		}else{
			return true;
		}
		dojo.stopEvent(evt);
		return false;
	},

	onOk: function(evt){
		dojo.stopEvent(evt);
		if(dojo.hasClass(this.okBtn, "dijitDisabled")){
			return false;
		}
		this.onValueSelected(this._cachedDate);
		return false;
	},

	onCancel: function(evt){
		dojo.stopEvent(evt);
		this.onValueSelected(this.get("value"));
		return false;
	}
});

dojo.declare("dojox.widget.Calendar2Pane",
	[dojox.widget._CalendarBase,
	 dojox.widget._CalendarDay,
	 dojox.widget._CalendarMonthYear], {
	 	// summary: A Calendar withtwo panes, the second one
		//		 containing both month and year
	 }
);

dojo.declare("dojox.widget.Calendar",
	[dojox.widget._CalendarBase,
	 dojox.widget._CalendarDay,
	 dojox.widget._CalendarMonthYear], {
	 	// summary: The standard Calendar. It includes day and month/year views.
		//	No visual effects are included.
	 }
);

dojo.declare("dojox.widget.DailyCalendar",
	[dojox.widget._CalendarBase,
	 dojox.widget._CalendarDay], {
	 	// summary: A calendar withonly a daily view.
		_makeDate: function(value){
			var now = new Date();
			now.setDate(value);
			return now;
		}
	 }

);

dojo.declare("dojox.widget.MonthAndYearlyCalendar",
	[dojox.widget._CalendarBase,
	 dojox.widget._CalendarMonthYear], {
	 	// summary: A calendar withonly a daily view.
	 }
);
