var monthNames = ["Janvier", "Février", "Mars", "Avril", 
									"Mai", "Juin", "Juillet", "Août", 
									"Septembre", "Octobre", "Novembre", "Décembre"];
var monthNbDays = [31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
var weekDaysAbrev = "LMMJVSD";
var Calendar_dateFormat = "dd/MM/yyyy";
var Calendar_dateFormatMonth = "MM/yyyy";

//var Calendar_dateFormatWeek = "ww/yyyy";


var titleText = "Choisissez une date";
var todayText = "Aujourd'hui:";

var mimsCalendar;

/**
 * Affiche un calendrier dans une fenêtre popup.
 * @param targetObject l'objet dans lequel affecter la date sélectionnée.
 * @param anchorName l'ancre qui servira de référence pour le positionnement de la fenêtre popup.
 * @param inTypeCalendar  : 0 -> calendrier jour
 *                        1 -> calendrier semaine
 *                        2 -> calendrier mois
 */
// PUBLIC
function MimsCalendarPopup(targetObject, anchorName, inTypeCalendar)
{
	var typeCalendar;
	
	if(typeof inTypeCalendar == 'boolean' || typeof inTypeCalendar == 'Boolean'){
		if(inTypeCalendar)
			typeCalendar = 2;
		else
			typeCalendar = 0;
	}
	else
			typeCalendar= inTypeCalendar;

  mimsCalendar = new PopupWindow();
  mimsCalendar.setSize(250, typeCalendar == 2 ? 60 : 191);
  mimsCalendar.offsetX = 0;
  mimsCalendar.offsetY = 0;
  mimsCalendar.autoHide();

  // Method mappings
  mimsCalendar.hideCalendar = Calendar_closeCalendar;
  mimsCalendar.refreshCalendar = Calendar_refreshCalendar;
  mimsCalendar.getCalendar = Calendar_getCalendarHtmlCode;
  mimsCalendar.createCalendar = Calendar_createCalendar;
  mimsCalendar.selectDate = Calendar_selectDate;

  window.Calendar_targetInput = null;
	
	var today = new Date();
	mimsCalendar.year = today.getFullYear();
	mimsCalendar.month = today.getMonth() + 1;
	mimsCalendar.typeCalendar = typeCalendar;
	
	// Affiche le calendrier.
	mimsCalendar.createCalendar(targetObject, anchorName);
}	

/**
 * Ferme la popup du calendrier.
 * @param index l'index de la fenêtre popup contenant le calendrier.
 */
// PRIVATE
function Calendar_closeCalendar() 
{
	this.hidePopup();
}

/**
 * Rafraichit le calendrier avec l'année et le mois spécifié.
 * @param year l'année à sélectionner.
 * @param month le mois à sélectionner.
 */
// PRIVATE
function Calendar_refreshCalendar(year, month) 
{
	this.month = month;
	this.year = year;
	this.populate(this.getCalendar());
	this.refresh();
}

/**
 * Crée et affiche le calendrier.
 * @param targetObject l'objet dans lequel affecter la date sélectionnée.
 * @param anchorName l'ancre qui servira de référence pour le positionnement de la fenêtre popup.
 */
// PRIVATE
function Calendar_createCalendar(targetObject, anchorName)
{
	var date;

	// Vérifie que le script date.js est accessible.
	if (!window.getDateFromFormat)
	{
		alert("calendar.select: To use this method you must also include 'date.js' for date formatting");
		return;
	}

	// Vérifie le type de la variable qui contiendra le résultat du choix de la date.
	if (targetObject.type != "text" && targetObject.type != "hidden" && targetObject.type != "textarea" && targetObject.type != "button")
	{ 
		alert("calendar.select: Input object passed is not a valid form input object"); 
		window.Calendar_targetInput = null;
		return;
	}
	if (targetObject.disabled) 
	{ 
		return; 
	} 

	window.Calendar_targetInput = targetObject;
	
	if (targetObject.value != "")
	{
		if(this.typeCalendar == 1){
			date = new Date();
		}
		else if(this.typeCalendar == 2)
			date = new Date(getDateFromFormat(targetObject.value, Calendar_dateFormat));
		else
			date = new Date(getDateFromFormat(targetObject.value, Calendar_dateFormatMonth));
	
		if (targetObject.value != "" && date.getFullYear() != 1970 && date.getMonth() != 0 && date.getDate() != (this.typeCalendar == 2 ? 0 : 1))
	  { 
			this.month = date.getMonth() + 1;
			this.year = date.getFullYear();
	  }
	}

	this.populate(this.getCalendar());
	this.showPopup(anchorName);
}
	
/**
 * Crée et renvoit le code html contenant le calendrier.
 * @param aYear l'année de départ.
 */
// PRIVATE
function Calendar_getCalendarHtmlCode()
{
	var aMonth = this.month;
	var aYear = this.year;
	var oD = new Date(aYear, aMonth - 1, 1);
	
	oD.od = oD.getDay();
	
	//Si le premier jour du mois est un dimanche alors commencer en 7 positions (au lieu de 0)
	if(oD.od == 0)
		oD.od = 7;

	var today = new Date()
	var scanfortoday = (aYear == today.getFullYear() && aMonth == today.getMonth() + 1) ? today.getDate() : 0;

	monthNbDays[1] = (((oD.getFullYear() % 100 != 0) && (oD.getFullYear() %4 == 0)) || (oD.getFullYear() % 400 == 0)) ? 29 : 28;

	var html = "<html><head><title>" + titleText + "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"; 
	html += "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</title>";
	html+= "<LINK rel = 'stylesheet' type = 'text/css' HREF = '/StyleServlet?cle=CALENDAR'> ";


	html += "</head><body>";
	
	
	html += "<table class = \"calendar-main\" cols = \"7\" cellpadding = \"0\" border = \"1\" cellspacing = \"0\">";

	// Ligne contenant l'année.
	html += "<tr align=\"center\">";
	if(this.typeCalendar == 1)
		html += "<td align = \"center\" class = \"calendar-daysofweek\">&nbsp;</td>";
	
	if(aYear > 1909)
	{
		html += "<td align = \"center\" class = \"calendar-year\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + (aYear - 10) + ", " + aMonth + ");\"" + 
		        ">&lt;&lt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-year\">&nbsp;</td>";
	if(aYear > 1900)
	{
		html += "<td align = \"center\" class = \"calendar-year-pt\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + (aYear - 1) + ", " + aMonth + ");\"" + 
		        ">&lt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-year\">&nbsp;</td>";
	html += "<td colspan = \"3\" align = \"center\" class = \"calendar-month\">" + aYear + "</td>";
	if(aYear < 2100)
	{
		html += "<td align = \"center\" class = \"calendar-year-pt\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + (aYear + 1) + ", " + aMonth + ");\"" + 
		        ">&gt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-year\">&nbsp;</td>";
	if(aYear < 2091)
	{
		html += "<td align = \"center\" class = \"calendar-year-pt\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + (aYear + 10) + ", " + aMonth + ");\"" + 
		        ">&gt;&gt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-year\">&nbsp;</td>";
	html += "</tr>";

	// Ligne contenant le mois.
	html += "<tr align=\"center\">";
	if(this.typeCalendar == 1)
		html += "<td align = \"center\" class = \"calendar-daysofweek\">&nbsp;</td>";
	
	if(aMonth > 1)
	{
		html += "<td align = \"center\" class = \"calendar-month-pt\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + aYear + ", 1);\"" + 
		        ">&lt;&lt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-month\">&nbsp;</td>";

	if(aMonth > 1)
	{
		html += "<td align = \"center\" class = \"calendar-month-pt\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + aYear + ", " + (aMonth - 1) + ");\"" + 
		        ">&lt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-month\">&nbsp;</td>";
  
  if(this.typeCalendar == 2){
		html += "<td colspan = \"3\" align = \"center\" class = \"calendar-month\" onmouseover = \"className='calendar-month-select';\" ";
 		html += "onmouseout = \"className='calendar-month';\" onclick = \"window.opener.mimsCalendar.selectDate(" + aYear + "," + aMonth + ");\">";
 		html += monthNames[aMonth - 1] + "</td>";
 	}
  else
		html += "<td colspan = \"3\" align = \"center\" class = \"calendar-month\">" + monthNames[aMonth - 1] + "</td>";

	if(aMonth < 12)
	{
		html += "<td align = \"center\" class = \"calendar-month-pt\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + aYear + ", " + (aMonth + 1) + ");\"" + 
		        ">&gt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-month\">&nbsp;</td>";
	if(aMonth < 12)
	{
		html += "<td align = \"center\" class = \"calendar-month-pt\" " +
						" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + aYear + ", 12);\"" + 
		        ">&gt;&gt;</td>";
	}
	else
		html += "<td align = \"center\" class = \"calendar-month\">&nbsp;</td>";
	html += "</tr>";
	
	if(this.typeCalendar != 2)
	{
		// Ligne contenant les jours de semaine.
		html += "<tr align = \"center\">";
		if(this.typeCalendar == 1)
			html += "<td class = \"calendar-daysofweek\">&nbsp;</td>";
		for(s = 0; s < 7; s++)
		  html += "<td class = \"calendar-daysofweek\">" + weekDaysAbrev.substr(s, 1) + "</td>";
		html += "</tr>";
	
		// Lignes contenants les jours.
		var newWeek = true;
		var lastDate = null;
		var addLinkOnWeek = false;
		for(i = 1; i <= 42; i++)
		{
			var x = ((i - oD.od >= 0) && (i - oD.od < monthNbDays[aMonth - 1])) ? i - oD.od + 1 : 0;
	    var aDate = "";
			var classDay = "calendar-days";
			
			if (x == scanfortoday)
			{
				classDay  = "calendar-today";
			}
			else if(this.typeCalendar == 1)
			{
				classDay  = "calendar-daysForWeek";
			}
			
			var style = "\" onmouseover = \"className='calendar-daysover';\" onmouseout = \"className='" + classDay + "';\""; 
			
	
			var tmp = new Date(aYear, aMonth - 1, x);
			aDate = (tmp.getDate() < 10 ? "0" : "") + tmp.getDate() + "/" + ((tmp.getMonth() + 1) < 10 ? "0" : "") + (tmp.getMonth() + 1) + "/" + tmp.getFullYear();
	
			if(newWeek && lastDate < tmp && this.typeCalendar == 1)
				html += "<tr align=\"center\" " + (this.typeCalendar == 1 ? style + " class=\"calendar-days\" " : "") + ">";	
			else if(newWeek)
				html += "<tr align=\"center\">";
	
			//Affiche le numéro de la semaine
			if(newWeek && this.typeCalendar == 1){
				var newNumWeek = tmp.getWeek();
				if(lastDate == null || lastDate < tmp){
					html += "<td class = \"calendar-daysofweek\" ";
					html += "onclick = \"javascript:window.opener.mimsCalendar.selectDate(" + aYear + "," + aMonth + "," + x + ");\">" + tmp.getWeek() +"</td>";
					addLinkOnWeek = true;
				}
				else{
					html += "<td class = \"calendar-daysofweek\">&nbsp;</td>";
					addLinkOnWeek = false;
				}
			}
	
			if(x == 0 && addLinkOnWeek)
			{
				html += "<td class = \"calendar-noDay\" onclick = \"javascript:window.opener.mimsCalendar.selectDate(" + aYear + "," + aMonth + "," + x + ");\">&nbsp;</td>";
			}
			else if(x == 0)
			{
				html += "<td class = \"calendar-noDay\">&nbsp;</td>";
			}
			else
			{
				html += "<td " + (this.typeCalendar == 1 ? "" : style) + " class = \"" + classDay + "\" " + 
				        " onclick = \"javascript:window.opener.mimsCalendar.selectDate(" + aYear + "," + aMonth + "," + x + ");\">" + x + "</td>";
			}
			
			if(((i) % 7 == 0) && ( i < 36)){
				newWeek = true;
			  html += "</tr>";
			}
			else 
				newWeek = false;
				
			lastDate = tmp;
		}
		html += "</tr>";
	}

	// Ligne contenant le bouton Today.
  var todayAsString = ""
  if(this.typeCalendar != 2)
	  todayAsString = (today.getDate() < 10 ? "0" : "") + today.getDate()  + " ";
  
  todayAsString += monthNames[today.getMonth()] + " " +
  								today.getFullYear();
	
	var nbrCols = (this.typeCalendar == 1 ? 8 : 7);
	html += "<tr>" + 
		      " <td colspan = \"" + nbrCols + "\" align = \"center\" onclick = \"javascript:window.opener.mimsCalendar.refreshCalendar(" + today.getFullYear() + ", " + (today.getMonth() + 1) + ");\">" +
			      	todayText +
			      	"<span class = \"calendar-today2\" onmouseover = \"className = 'calendar-today2over';\" onmouseout = \"className = 'calendar-today2';\">" + todayAsString + "</span>" +
		      	"</td>" +
		      "</tr>";

	html += "</table>";
	html += "</body></html>";
	return html;
}

/**
 * Initialise le champ de retour avec la date sélectionnée.
 */
// PRIVATE
function Calendar_selectDate(year, month, day) 
{ 
	if (window.Calendar_targetInput != null) 
	{
		if(this.typeCalendar == 1){
			var dt = new Date(year, month-1, day);
			window.Calendar_targetInput.value = dt.getWeek() +"/" + dt.getYearWeek() ;
		}
		else if(this.typeCalendar == 2)
		{
			var dt = new Date(year, month-1, 1);
			window.Calendar_targetInput.value = formatDate(dt, Calendar_dateFormatMonth);
		}
		else
		{
			var dt = new Date(year, month-1, day);
			window.Calendar_targetInput.value = formatDate(dt, Calendar_dateFormat);
		}
	}
	else 
	{
		alert('Use setReturnFunction() to define which function will get the clicked results!'); 
	}
	this.hideCalendar();
}