define([
	"dojo/date", // date date.compare
	"dojo/date/locale", // locale.regexp
	"dojo/date/stamp", // stamp.fromISOString stamp.toISOString
	"dojo/_base/declare", // declare
	"dojo/_base/lang", // lang.getObject
	"./RangeBoundTextBox",
	"../_HasDropDown",
	"dojo/text!./templates/DropDownBox.html"
], function(date, locale, stamp, declare, lang, RangeBoundTextBox, _HasDropDown, template){

	// module:
	//		dijit/form/_DateTimeTextBox

	new Date("X"); // workaround for #11279, new Date("") == NaN

	var _DateTimeTextBox = declare("dijit.form._DateTimeTextBox", [RangeBoundTextBox, _HasDropDown], {
		// summary:
		//		Base class for validating, serializable, range-bound date or time text box.

		templateString: template,

		// hasDownArrow: [const] Boolean
		//		Set this textbox to display a down arrow button, to open the drop down list.
		hasDownArrow: true,

		// Set classes like dijitDownArrowButtonHover depending on mouse action over button node
		cssStateNodes: {
			"_buttonNode": "dijitDownArrowButton"
		},

		/*=====
		// constraints: _DateTimeTextBox.__Constraints
		//		Despite the name, this parameter specifies both constraints on the input
		//		(including starting/ending dates/times allowed) as well as
		//		formatting options like whether the date is displayed in long (ex: December 25, 2005)
		//		or short (ex: 12/25/2005) format.  See `dijit/form/_DateTimeTextBox.__Constraints` for details.
		constraints: {},
		======*/

		// The constraints without the min/max properties. Used by the compare() method
		_unboundedConstraints: {},

		// Override ValidationTextBox.pattern.... we use a reg-ex generating function rather
		// than a straight regexp to deal with locale  (plus formatting options too?)
		pattern: locale.regexp,

		// datePackage: String
		//		JavaScript namespace to find calendar routines.	 If unspecified, uses Gregorian calendar routines
		//		at dojo/date and dojo/date/locale.
		datePackage: "",
		//		TODO: for 2.0, replace datePackage with dateModule and dateLocalModule attributes specifying MIDs,
		//		or alternately just get rid of this completely and tell user to use module ID remapping
		//		via require

		postMixInProperties: function(){
			this.inherited(arguments);
			this._set("type", "text"); // in case type="date"|"time" was specified which messes up parse/format
		},

		// Override _FormWidget.compare() to work for dates/times
		compare: function(/*Date*/ val1, /*Date*/ val2){
			var isInvalid1 = this._isInvalidDate(val1);
			var isInvalid2 = this._isInvalidDate(val2);
			if (isInvalid1 || isInvalid2){
				return (isInvalid1 && isInvalid2) ? 0 : (!isInvalid1 ? 1 : -1);
			}
			// Format and parse the values before comparing them to make sure that only the parts of the
			// date that will make the "round trip" get compared.
			var fval1 = this.format(val1, this._unboundedConstraints),
				fval2 = this.format(val2, this._unboundedConstraints),
				pval1 = this.parse(fval1, this._unboundedConstraints),
				pval2 = this.parse(fval2, this._unboundedConstraints);

			return fval1 == fval2 ? 0 : date.compare(pval1, pval2, this._selector);
		},

		// flag to _HasDropDown to make drop down Calendar width == <input> width
		autoWidth: true,

		format: function(/*Date*/ value, /*locale.__FormatOptions*/ constraints){
			// summary:
			//		Formats the value as a Date, according to specified locale (second argument)
			// tags:
			//		protected
			if(!value){ return ''; }
			return this.dateLocaleModule.format(value, constraints);
		},

		"parse": function(/*String*/ value, /*locale.__FormatOptions*/ constraints){
			// summary:
			//		Parses as string as a Date, according to constraints
			// tags:
			//		protected

			return this.dateLocaleModule.parse(value, constraints) || (this._isEmpty(value) ? null : undefined);	 // Date
		},

		// Overrides ValidationTextBox.serialize() to serialize a date in canonical ISO format.
		serialize: function(/*anything*/ val, /*Object?*/ options){
			if(val.toGregorian){
				val = val.toGregorian();
			}
			return stamp.toISOString(val, options);
		},

		// dropDownDefaultValue: Date
		//		The default value to focus in the popupClass widget when the textbox value is empty.
		dropDownDefaultValue : new Date(),

		// value: Date
		//		The value of this widget as a JavaScript Date object.  Use get("value") / set("value", val) to manipulate.
		//		When passed to the parser in markup, must be specified according to `dojo/date/stamp.fromISOString()`
		value: new Date(""),	// value.toString()="NaN"

		_blankValue: null,	// used by filter() when the textbox is blank

		// popupClass: [protected extension] String
		//		Name of the popup widget class used to select a date/time.
		//		Subclasses should specify this.
		popupClass: "", // default is no popup = text only


		// _selector: [protected extension] String
		//		Specifies constraints.selector passed to dojo.date functions, should be either
		//		"date" or "time".
		//		Subclass must specify this.
		_selector: "",

		constructor: function(params /*===== , srcNodeRef =====*/){
			// summary:
			//		Create the widget.
			// params: Object|null
			//		Hash of initialization parameters for widget, including scalar values (like title, duration etc.)
			//		and functions, typically callbacks like onClick.
			//		The hash can contain any of the widget's properties, excluding read-only properties.
			// srcNodeRef: DOMNode|String?
			//		If a srcNodeRef (DOM node) is specified, replace srcNodeRef with my generated DOM tree

			params = params || {};
			this.dateModule = params.datePackage ? lang.getObject(params.datePackage, false) : date;
			this.dateClassObj = this.dateModule.Date || Date;
			this.dateLocaleModule = params.datePackage ? lang.getObject(params.datePackage+".locale", false) : locale;
			this._set('pattern', this.dateLocaleModule.regexp);
			this._invalidDate = this.constructor.prototype.value.toString();
		},

		buildRendering: function(){
			this.inherited(arguments);

			if(!this.hasDownArrow){
				this._buttonNode.style.display = "none";
			}

			// If hasDownArrow is false, we basically just want to treat the whole widget as the
			// button.
			if(!this.hasDownArrow){
				this._buttonNode = this.domNode;
				this.baseClass += " dijitComboBoxOpenOnClick";
			}
		},

		_setConstraintsAttr: function(/*Object*/ constraints){
			constraints.selector = this._selector;
			constraints.fullYear = true; // see #5465 - always format with 4-digit years
			var fromISO = stamp.fromISOString;
			if(typeof constraints.min == "string"){ constraints.min = fromISO(constraints.min); }
			if(typeof constraints.max == "string"){ constraints.max = fromISO(constraints.max); }
			this.inherited(arguments);
			this._unboundedConstraints = lang.mixin({}, this.constraints, {min: null, max: null});
		},

		_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|String*/ value, /*Boolean?*/ priorityChange, /*String?*/ formattedValue){
			// summary:
			//		Sets the date on this textbox. Note: value can be a JavaScript Date literal or a string to be parsed.
			if(value !== undefined){
				if(typeof value == "string"){
					value = stamp.fromISOString(value);
				}
				if(this._isInvalidDate(value)){
					value = null;
				}
				if(value instanceof Date && !(this.dateClassObj instanceof Date)){
					value = new this.dateClassObj(value);
				}
			}
			this.inherited(arguments);
			if(this.value instanceof Date){
				this.filterString = "";
			}
			if(this.dropDown){
				this.dropDown.set('value', value, false);
			}
		},

		_set: function(attr, value){
			// Avoid spurious watch() notifications when value is changed to new Date object w/the same value
			var oldValue = this._get("value");
			if(attr == "value" && oldValue instanceof Date && this.compare(value, oldValue) == 0){
				return;
			}
			this.inherited(arguments);
		},

		_setDropDownDefaultValueAttr: function(/*Date*/ val){
			if(this._isInvalidDate(val)){
				// convert null setting into today's date, since there needs to be *some* default at all times.
				 val = new this.dateClassObj();
			}
			this._set("dropDownDefaultValue", val);
		},

		openDropDown: function(/*Function*/ callback){
			// rebuild drop down every time, so that constraints get copied (#6002)
			if(this.dropDown){
				this.dropDown.destroy();
			}
			var PopupProto = lang.isString(this.popupClass) ? lang.getObject(this.popupClass, false) : this.popupClass,
				textBox = this,
				value = this.get("value");
			this.dropDown = new PopupProto({
				onChange: function(value){
					// this will cause InlineEditBox and other handlers to do stuff so make sure it's last
					textBox.set('value', value, true);
				},
				id: this.id + "_popup",
				dir: textBox.dir,
				lang: textBox.lang,
				value: value,
				textDir: textBox.textDir,
				currentFocus: !this._isInvalidDate(value) ? value : this.dropDownDefaultValue,
				constraints: textBox.constraints,
				filterString: textBox.filterString, // for TimeTextBox, to filter times shown
				datePackage: textBox.datePackage,
				isDisabledDate: function(/*Date*/ date){
					// summary:
					//		disables dates outside of the min/max of the _DateTimeTextBox
					return !textBox.rangeCheck(date, textBox.constraints);
				}
			});

			this.inherited(arguments);
		},

		_getDisplayedValueAttr: function(){
			return this.textbox.value;
		},

		_setDisplayedValueAttr: function(/*String*/ value, /*Boolean?*/ priorityChange){
			this._setValueAttr(this.parse(value, this.constraints), priorityChange, value);
		}
	});


	/*=====
	 _DateTimeTextBox.__Constraints = declare([RangeBoundTextBox.__Constraints, locale.__FormatOptions], {
		 // summary:
		 //		Specifies both the rules on valid/invalid values (first/last date/time allowed),
		 //		and also formatting options for how the date/time is displayed.
		 // example:
		 //		To restrict to dates within 2004, displayed in a long format like "December 25, 2005":
		 //	|		{min:'2004-01-01',max:'2004-12-31', formatLength:'long'}
	 });
	 =====*/

	return _DateTimeTextBox;
});
