// fcp.Calendar - simple Calendar control for Javascript.
// Copyright (C) 2006 Felix Plesoianu
// This file is distributed under the MIT license.
// TO DO: option to put Sunday first, US style.
// Last change (2006-09-06): current date can be highlighted.

var estat_dia = new Object();
var i;

for(i=1;i<=31;i++)
	estat_dia["2008,0,"+i] = "tancat";
for(i=1;i<=29;i++)
	estat_dia["2008,1,"+i] = "tancat";
for(i=1;i<8;i++)
	estat_dia["2008,2,"+i] = "tancat";
	
for(i=1;i<=31;i++)
	estat_dia["2008,4,"+i] = "mitja";	
for(i=1;i<=31;i++)
	estat_dia["2008,5,"+i] = "mitja";
	
for(i=0;i<=31;i++) 
	estat_dia["2008,6,"+i] = "alta"; //juliol
for(i=0;i<=31;i++)
	estat_dia["2008,7,"+i] = "alta"; //agost
	
for(i=1;i<28;i++)
	estat_dia["2008,8,"+i] = "mitja";
	
for(i=28;i<=31;i++)
	estat_dia["2008,8,"+i] = "tancat";
for(i=1;i<=31;i++)
	estat_dia["2008,9,"+i] = "tancat";
for(i=1;i<=31;i++)
	estat_dia["2008,10,"+i] = "tancat";
for(i=1;i<=31;i++)
	estat_dia["2008,11,"+i] = "tancat";
	
// any 2009
for(i=1;i<=31;i++)
	estat_dia["2009,0,"+i] = "tancat";
	
//estat_dia["2008,4,5"] = "tancat";

if (!fcp)
	var fcp = new Object();
if (!fcp.msg)
	fcp.msg = new Object();

var idioma;

fcp.Calendar = function(lang,element, show_clock) {
	idioma = lang;
	if (!element.childNodes)
		throw "HTML element expected";
	this.carrega_etiquetes();
	this.element = element;
	this.selection = new Date();
	this.show_clock = show_clock;
	this.selected_cell = undefined;
	this.generate_month();
	this.render_calendar();
}

fcp.Calendar.prototype.carrega_etiquetes = function () {
	switch(idioma)
	{
		case "ca": 
					fcp.week_days = ["Dill", "Dmt", "Dmc", "Dij", "Div", "Dis", "Diu"];
					fcp.months = ["Gener", "Febrer", "Mar\u00E7", "Abril", "Maig", "Juny", "Juliol", "Agost", "Setembre", "Octubre", "Novembre", "Desembre"];
					fcp.msg.prev_year = "Any anterior";
					fcp.msg.prev_month = "Mes anterior";
					fcp.msg.next_month = "Mes seg\u00FCent";
					fcp.msg.next_year = "Any seg\u00FCent";
					break;
		case "es": 
					fcp.week_days = ["Lu","Ma", "Mi", "Ju", "Vi", "Sa", "Do"];
					fcp.months = ["Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Septiembre", "Octubre", "Noviembre", "Diciembre"];
					fcp.msg.prev_year = "A\u00F1o anterior";
					fcp.msg.prev_month = "Mes anterior";
					fcp.msg.next_month = "Mes siguiente";
					fcp.msg.next_year = "A\u00F1o siguiente";
					break;
		case "fr":
					fcp.week_days = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]; // Falten els dies en frances
					fcp.months = ["Janvier", "F\u00E9vrier", "Mars", "Avril", "Mai", "Juin", "Juillet", "Août", "Septembre", "Octobre", "Novembre", "D\u00E9cembre"];
					fcp.msg.prev_year = "Ann\u00E9e pr\u00E9c\u00E9dente";
					fcp.msg.prev_month = "Mois pr\u00E9c\u00E9dent";
					fcp.msg.next_month = "Le mois prochain";
					fcp.msg.next_year = "L'ann\u00E9e prochaine";
					break; 
		case "du":
					fcp.week_days = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]; // Falten els dies en aleman
					fcp.months = ["Januar", "Februar", "M\u00E4rz", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember"];
					fcp.msg.prev_year = "Vorjahres";
					fcp.msg.prev_month = "Fr\u00FCherer Monat";
					fcp.msg.next_month = "Folgender Monat";
					fcp.msg.next_year = "N\u00E4chste Jahr";
					break; 
		default:
					fcp.week_days = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"];
					fcp.months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
					fcp.msg.prev_year = "Previous year";
					fcp.msg.prev_month = "Previous month";
					fcp.msg.next_month = "Next month";
					fcp.msg.next_year = "Next year";
					break; 
	}
}

fcp.Calendar.prototype.set_date_time = function (date_time) {
	if (date_time.constructor == Date) {
		this.selection = date_time;
		this.generate_month();
		this.render_calendar();
	} else {
		throw "Date object expected (in fcp.Calendar.set_date_time)";
	}
}

fcp.Calendar.prototype.next_month = function () {
	var month = this.selection.getMonth();
	if (month == 11) {
		this.selection.setMonth(0);
		this.selection.setYear(this.selection.getFullYear() + 1);
	} else {
		this.selection.setMonth(month + 1);
	}
	this.generate_month();
	this.render_calendar();
}

fcp.Calendar.prototype.prev_month = function () {
	var month = this.selection.getMonth();
	if (month == 0) {
		this.selection.setMonth(11);
		this.selection.setYear(this.selection.getFullYear() - 1);
	} else {
		this.selection.setMonth(month - 1);
	}
	this.generate_month();
	this.render_calendar();
}

fcp.Calendar.prototype.next_year = function () {
	var is_feb29 = (this.selection.getMonth() == 1)
		&& (this.selection.getDate() == 29);
	if (is_feb29) {
		this.selection.setDate(1);
		this.selection.setMonth(2); // March
	}
	this.selection.setFullYear(this.selection.getFullYear() + 1);
	this.generate_month();
	this.render_calendar();
}

fcp.Calendar.prototype.prev_year = function () {
	var is_feb29 = (this.selection.getMonth() == 1)
		&& (this.selection.getDate() == 29);
	if (is_feb29) {
		this.selection.setDate(1);
		this.selection.setMonth(2); // March
	}
	this.selection.setFullYear(this.selection.getFullYear() - 1);
	this.generate_month();
	this.render_calendar();
}

fcp.Calendar.prototype.generate_month = function () {
	this.raw_data = new Array();
	var week = 0;
	this.raw_data[week] = new Array(7);
	
	var first_of_month = fcp.Calendar.clone_date(this.selection);
	first_of_month.setDate(1);
	var first_weekday = first_of_month.getDay();
	// Move Sunday last were it belongs, he he.
	first_weekday = (first_weekday == 0) ? 6 : first_weekday - 1;
	// Fill in the last days from the previous month.
	for (var i = 0; i < first_weekday; i++) {
		this.raw_data[week][i] = 0;
	}
	
	var last_of_month = fcp.Calendar.days_in_month(
		this.selection.getYear(),
		this.selection.getMonth());
	
	var weekday = first_weekday;
	
	for (var i = 1; i <= last_of_month; i++) {
		this.raw_data[week][weekday] = i;		
		weekday++;
		if (weekday > 6) {
			weekday = 0;
			week++;
			this.raw_data[week] = new Array(7);
		}
	}

	// Fill in the first days from the next month.
	for (var i = weekday; i < 7; i++) {
		this.raw_data[week][i] = 0;
	}
}

fcp.Calendar.prototype.render_calendar = function () {
	this.element.selected_cell = undefined;
	this.element.innerHTML = "";
	this.element.appendChild(this.render_month());
}

fcp.Calendar.prototype.render_heading = function () {
	var heading = document.createElement("caption");
	
	var prev_year = document.createElement("a");
	prev_year.href = "#";
	prev_year.calendar = this;
	prev_year.onclick = function() {
		this.calendar.prev_year();
		return false;
	};
	prev_year.innerHTML = "&lt;&lt;";
	prev_year.title = fcp.msg.prev_year;
	
	var prev_month = document.createElement("a");
	prev_month.href = "#";
	prev_month.calendar = this;
	prev_month.onclick = function() {
		this.calendar.prev_month();
		return false;
	};
	prev_month.innerHTML = "&lt;";
	prev_month.title = fcp.msg.prev_month;
	
	var month_year = document.createTextNode(
		"\u00a0\u00a0" + fcp.months[this.selection.getMonth()]
		+ " " + this.selection.getFullYear() + "\u00a0\u00a0");
		
	var next_month = document.createElement("a");
	next_month.href = "#";
	next_month.calendar = this;
	next_month.onclick = function() {
		this.calendar.next_month();
		return false;
	};
	next_month.innerHTML = "&gt;";
	next_month.title = fcp.msg.next_month;
	
	var next_year = document.createElement("a");
	next_year.href = "#";
	next_year.calendar = this;
	next_year.onclick = function() {
		this.calendar.next_year();
		return false;
	};
	next_year.innerHTML = "&gt;&gt;";
	next_year.title = fcp.msg.next_year;

	heading.appendChild(prev_year);
	heading.appendChild(document.createTextNode("\u00a0\u00a0"));
	heading.appendChild(prev_month);
	heading.appendChild(month_year);
	heading.appendChild(next_month);
	heading.appendChild(document.createTextNode("\u00a0\u00a0"));
	heading.appendChild(next_year);
	return heading;
}

fcp.Calendar.prototype.render_month = function() {
	var html_month = document.createElement("table");
	html_month.className = "calendar";
	html_month.appendChild(this.render_heading());
	
	var thead = document.createElement("thead");
	var tr = document.createElement("tr");
	for (var i = 0; i < fcp.week_days.length; i++) {
		var th = document.createElement("th");
		th.innerHTML =  fcp.week_days[i];
		tr.appendChild(th);
	}
	thead.appendChild(tr);
	html_month.appendChild(thead);
	
	var tbody = document.createElement("tbody");
	for (var i = 0; i < this.raw_data.length; i++) {
		tbody.appendChild(this.render_week(this.raw_data[i]));
	}
	html_month.appendChild(tbody);
	return html_month;
}

fcp.Calendar.prototype.render_week = function (day_numbers) {
	var html_week = document.createElement("tr");
	html_week.align = "right";
	for (var i = 0; i < 7; i++) {
		html_week.appendChild(this.render_day(day_numbers[i]));
	}
	return html_week;
}

fcp.Calendar.prototype.render_day = function (day_number) {
	var td = document.createElement("td");
	
	var mes = this.selection.getMonth();
	var any = this.selection.getFullYear();
	//alert(day_number+"-"+mes+"-"+any);
	
	if (day_number >= 1 && day_number <= 31) {
		var anchor = document.createElement("a");
		anchor.href = "#";
		anchor.innerHTML = day_number;
		anchor.calendar = this;
		anchor.date = day_number;
		anchor.onclick = fcp.Calendar.handle_select;
		td.appendChild(anchor);
		var avui = new Date();
		/*if (day_number == this.selection.getDate() ) {
			this.selected_cell = td;
			td.className = "in_month selected";
		} else {*/
			var estat = estat_dia[any+","+mes+","+day_number];
			if(estat=="" | estat==undefined)
				td.className = "in_month";
			else
				td.className = estat;
		//}
	}
	return td;
}

// Do nothing by default.
fcp.Calendar.prototype.onselect = function () {}

fcp.Calendar.clone_date = function (date_obj) {
	if (date_obj.constructor != Date)
		throw "Date object expected (in fcp.Calendar.clone_date)";
	else
		return new Date(
			date_obj.getFullYear(),
			date_obj.getMonth(),
			date_obj.getDate(),
			date_obj.getHours(),
			date_obj.getMinutes(),
			date_obj.getSeconds());	
}

fcp.Calendar.days_in_month = function (year, month) {
	if (month < 0 || month > 11)
		throw "Month must be between 0 and 11";
	var day_count = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
	if (month != 1) {
		return day_count[month];
	} else if ((year % 4) != 0) {
		return 28;
	} else if ((year % 400) == 0) {
		return 29;
	} else if ((year % 100) == 0) {
		return 28;
	} else {
		return 29;
	}
}

fcp.Calendar.handle_select = function () {
	/*if (this.calendar.selected_cell)
		this.calendar.selected_cell.className = "in_month";
	this.calendar.selected_cell = this.parentNode;
	this.parentNode.className = "in_month selected"; 
	*/
	this.calendar.selection.setDate(this.date);
	this.calendar.onselect(this.calendar.selection.getDate()+"/"+this.calendar.selection.getMonth()+"/"+this.calendar.selection.getFullYear()); //this.calendar.selection (retornaria tots els parametres)
	return false;
}