/*
 *
 * Copyright (c) 2004-2005 by Zapatec, Inc.
 * http://www.zapatec.com
 * 1700 MLK Way, Berkeley, California,
 * 94709, U.S.A.
 * All rights reserved.
 *
 *
 */

Zapatec.Setup=function(){};
Zapatec.Setup.test=true;
Zapatec.Calendar.setup=function(params)
{
	function param_default(pname,def)
	{
		if(typeof params[pname]=="undefined")
		{
			params[pname]=def;
		}
	};
	var d = new Date();
	param_default("inputField",null);
	param_default("displayArea",null);
	param_default("button",null);
	param_default("eventName","click");
	param_default("ifFormat","%Y/%m/%d");
	param_default("daFormat","%Y/%m/%d");
	param_default("singleClick",true);
	param_default("disableFunc",null);
	param_default("dateStatusFunc",params["disableFunc"]);
	param_default("dateText",null);
	param_default("firstDay",null);
	param_default("align","Br");
	
	//to enable the calendar to look into the next year - use param w/ +1 var//
	//param_default("range",[d.getFullYear(),d.getFullYear()+1]);
	param_default("range",[d.getFullYear(),d.getFullYear()]);
	
	param_default("weekNumbers",true);
	param_default("flat",null);
	param_default("flatCallback",null);
	param_default("onSelect",null);
	param_default("onClose",null);
	param_default("onUpdate",null);
	param_default("date",null);
	param_default("showsTime",false);
	param_default("sortOrder","asc");
	param_default("timeFormat","24");
	param_default("timeInterval",null);
	param_default("electric",true);
	param_default("step",2);
	param_default("position",null);
	param_default("cache",false);
	param_default("showOthers",false);
	param_default("multiple",null);
	param_default("saveDate",null);
	param_default("fdowClick",false);
	param_default("titleHtml",null);
	if(	(params.numberMonths>12)	||	(params.numberMonths<1)	)
	{
		params.numberMonths=1;
	}
	else
	{
		param_default("numberMonths",1);
	}
	if(	params.numberMonths>1 )
	{
		params.showOthers=false;
	}
	params.numberMonths=parseInt(params.numberMonths,10);
	if(	(params.controlMonth>params.numberMonths)	||	(params.controlMonth<1)	)
	{
		params.controlMonth=1;
	}
	else
	{
		param_default("controlMonth",1);
	}
	params.controlMonth=parseInt(params.controlMonth,10);
	param_default("vertical",false);
	if(params.monthsInRow>params.numberMonths)
	{
		params.monthsInRow=params.numberMonths;
	}
	param_default("monthsInRow",params.numberMonths);
	params.monthsInRow=parseInt(params.monthsInRow,10);
	if(params.multiple)
	{
		params.singleClick=false;
	}
	var tmp=["inputField","displayArea","button"];
	for(var i in tmp)
	{
		if(typeof params[tmp[i]]=="string")
		{
			params[tmp[i]]=document.getElementById(params[tmp[i]]);
		}
	}
	if(	!(params.flat	||	params.multiple	||	params.inputField	||	params.displayArea	||	params.button)	)
	{
		alert("Calendar.setup:\n  Nothing to setup (no fields found).  Please check your code");
		return false;
	}
	if(		(		params.timeInterval  && 
														 (	(params.timeInterval!==Math.floor(params.timeInterval))		||		(60%params.timeInterval!==0&&params.timeInterval%60!==0)	)
			)
			
			||	(params.timeInterval>360)
	  )
	 {
	 alert("timeInterval option can only have the following number of minutes:\n1, 2, 3, 4, 5, 6, 10, 15, 30,  60, 120, 180, 240, 300, 360 ");
	 params.timeInterval=null;
	 }
	if(	params.date 	&&	!Date.parse(params.date) )
	{
		alert("Start Date Invalid: "+params.date+".\nSee date option. \nDefaulting to today.");
		params.date=null;
	}
	if(params.saveDate)
	{
		param_default("cookiePrefix",window.location.href+params.inputField);
		var cookieName=params.cookiePrefix;
		var newdate=Zapatec.Utils.getCookie(cookieName);
		if(newdate!=null)
		{
			document.getElementById(params.inputField.id).value=newdate;
		}
	}
	function onSelect(cal)
	{
		var p=cal.params;
		var update=(cal.dateClicked||p.electric);
		if	(	update	&&	p.flat)
		{
			if(	typeof p.flatCallback=="function"	)
			{
				if(!p.multiple)
				p.flatCallback(cal);
			}
			else
				alert("No flatCallback given -- doing nothing.");
			
			return false;
		}
		if	(	update	&&	p.inputField	)
		{
			p.inputField.value=cal.currentDate.print(p.ifFormat);
			if	(	typeof p.inputField.onchange=="function"	)
				p.inputField.onchange();
		}
		if	(	update	&&	p.displayArea	)
			p.displayArea.innerHTML=cal.currentDate.print(p.daFormat);
		if	(	update	&&	p.singleClick	&&	cal.dateClicked	)
			cal.callCloseHandler();
		if	(	update	&&	typeof p.onUpdate=="function"	)
			p.onUpdate(cal);
		if	(	p.saveDate	)
		{
			var cookieName=p.cookiePrefix;
			Zapatec.Utils.writeCookie(cookieName,p.inputField.value,null,'/',p.saveDate);
		}
	};
	
	if	(	params.flat!=null	)
	{
		if(typeof params.flat=="string")
			params.flat=document.getElementById(params.flat);
		if(!params.flat)
		{
			alert("Calendar.setup:\n  Flat specified but can't find parent.");
			return false;
		}
		var cal=new 	Zapatec.Calendar(params.firstDay,params.date,params.onSelect||onSelect);
		cal.showsOtherMonths=params.showOthers;
		cal.showsTime=params.showsTime;
		cal.time24=(params.timeFormat=="24");
		cal.timeInterval=params.timeInterval;
		cal.params=params;
		cal.weekNumbers=params.weekNumbers;
		cal.sortOrder=params.sortOrder.toLowerCase();
		cal.setRange(params.range[0],params.range[1]);
		cal.setDateStatusHandler(params.dateStatusFunc);
		cal.getDateText=params.dateText;
		cal.numberMonths=params.numberMonths;
		cal.controlMonth=params.controlMonth;
		cal.vertical=params.vertical;
		cal.yearStep=params.step;
		cal.monthsInRow=params.monthsInRow;
		if(params.ifFormat)
		{	
			cal.setDateFormat(params.ifFormat);
		}
		if	(	params.inputField	&&	params.inputField.type=="text"	&&	typeof params.inputField.value=="string"	)
		{
			cal.parseDate(params.inputField.value);
		}
		if(params.multiple)
		{
			cal.setMultipleDates(params.multiple);
		}
		cal.create(params.flat);
		cal.show();
		return cal;
	}
	var triggerEl	=	params.button	||	params.displayArea	||	params.inputField;
	triggerEl["on"+params.eventName]=function()
	{
		var dateEl	=	params.inputField	||	params.displayArea;
		if(triggerEl.blur)
		{
			triggerEl.blur();
		}
		var dateFmt	=	params.inputField	?	params.ifFormat	:	params.daFormat;
		var mustCreate	=	false;
		var cal=window.calendar;
		if(	!(cal	&&	params.cache)	)
		{
			window.calendar=cal=new Zapatec.Calendar(
				params.firstDay,
				params.date,
				params.onSelect||onSelect,
				params.onClose||function(cal)
				{
					if(params.cache)
						cal.hide();
					else
						cal.destroy();
				}
			);
			cal.showsTime=params.showsTime;
			cal.time24=(params.timeFormat=="24");
			cal.timeInterval=params.timeInterval;
			cal.weekNumbers=params.weekNumbers;
			cal.numberMonths=params.numberMonths;
			cal.controlMonth=params.controlMonth;
			cal.vertical=params.vertical;
			cal.monthsInRow=params.monthsInRow;
			cal.historyDateFormat=params.ifFormat||params.daFormat;
			mustCreate=true;
		}
		else
		{
			if(params.date)
				cal.setDate(params.date);
			cal.hide();
		}
		if(params.multiple)
		{
			cal.setMultipleDates(params.multiple);
		}
		cal.showsOtherMonths=params.showOthers;
		cal.yearStep=params.step;
		cal.setRange(params.range[0],params.range[1]);
		cal.params=params;
		cal.setDateStatusHandler(params.dateStatusFunc);
		cal.getDateText=params.dateText;
		cal.setDateFormat(dateFmt);
		if(mustCreate)
			cal.create();
		if(dateEl)
		{
			var dateValue;
			if(dateEl.value)
			{
				dateValue=dateEl.value;
			}
			else
			{
				dateValue=dateEl.innerHTML;
			}
			if(dateValue!="")
			{
				var parsedDate=Date.parseDate(dateEl.value||dateEl.innerHTML,dateFmt);
				if(parsedDate!=null)
				{
					cal.setDate(parsedDate);
					
				}
			}
		}
		if(!params.position)
			cal.showAtElement(	params.button	||	params.displayArea	||	params.inputField	,	params.align	);
		else
			cal.showAt(params.position[0],params.position[1]);
		
		return false;
	};
	if(params.closeEventName)
	{
		triggerEl["on"+params.closeEventName]=function()
		{
			if(window.calendar)
				window.calendar.callCloseHandler();
		};
	}
	
	return cal;
};