// Title: Tigra Calendar
// URL: http://www.softcomplex.com/products/tigra_calendar/
// Version: 3.2 (European date format)
// Date: 10/14/2002 (mm/dd/yyyy)
// Note: Permission given to use this script in ANY kind of applications if
//    header lines are left unchanged.
// Note: Script consists of two files: calendar?.js and calendar.html

// Modified 27-04-2005 for xpyth, Torben Wilhelmsen:
// calendar1.js and calendar2.js are merged into one by adding this.format

// if two digit year input dates after this year considered 20 century.
var NUM_CENTYEAR = 30;
// is time input control required by default
var BUL_TIMECOMPONENT = false;
// are year scrolling buttons required by default
var BUL_YEARSCROLL = true;

var calendars = [];
var RE_NUM = /^\-?\d+$/;
var cal = new Array();

var formats = new Array(3);
formats['europa'] = new Array('-',0,1,2,'eu');
formats['europa/'] = new Array('/',0,1,2,'eu');
formats['us'] = new Array('/',1,0,2,'us');
formats['sql'] = new Array('',2,1,0,'pg');
formats['yyyy-mm-dd'] = new Array('-',2,1,0,'yyyy-mm-dd');

function calendar1() {
	args = calendar1.arguments;
	obj_target = args[0];
	if (args.length == 2) format = formats[args[1]];
	else format = format['europa'];
	// assing methods
	this.format   = format;
	this.gen_date = cal_gen_date1;
	this.gen_time = cal_gen_time1;
	this.gen_tsmp = cal_gen_tsmp1;
	this.prs_date = cal_prs_date1;
	this.prs_time = cal_prs_time1;
	this.prs_tsmp = cal_prs_tsmp1;
	this.popup    = cal_popup1;

	// validate input parameters
	if (!obj_target)
		return cal_error("Error calling the calendar: no target control specified");
	if (obj_target.value == null)
		return cal_error("Error calling the calendar: parameter specified is not valid target control");
	this.target = obj_target;
	this.time_comp = BUL_TIMECOMPONENT;
	this.year_scroll = BUL_YEARSCROLL;
	
	// register in global collections
	this.id = calendars.length;
	calendars[this.id] = this;
}

function cal_popup1 (str_datetime) {
	this.dt_current = this.prs_tsmp(str_datetime ? str_datetime : this.target.value);
	this.dt_selected = this.prs_tsmp(this.target.value);
	if (!this.dt_current) return;
	var obj_calwindow = window.open(
		this.popuppath + '/-/datetime-' + this.dt_current.valueOf()+ '/id-' + this.id + '/language-' + this.language + '/current-' + this.dt_selected.valueOf() + '/cellwidth-' + this.width,
		'Calendar', 'width='+(8*this.width)+',height='+(this.time_comp ? 215 : 164)+
		',status=no,resizable=no,top=200,left=200,dependent=yes,scrollbars=no,alwaysRaised=yes'
	);
	obj_calwindow.opener = window;
	obj_calwindow.focus();
}

// timestamp generating function
function cal_gen_tsmp1 (dt_datetime) {
	return(this.gen_date(dt_datetime) + ' ' + this.gen_time(dt_datetime));
}

// date generating function
function cal_gen_date1 (dt_datetime) {
	datevals = new Array(((dt_datetime.getDate() < 10 ? '0' : '') + dt_datetime.getDate()),((dt_datetime.getMonth() < 9 ? '0' : '') + (dt_datetime.getMonth() + 1)),dt_datetime.getFullYear());
	return datevals[this.format[1]] + this.format[0] + datevals[this.format[2]] + this.format[0] + datevals[this.format[3]];
}

// time generating function
function cal_gen_time1 (dt_datetime) {
	return (
		(dt_datetime.getHours() < 10 ? '0' : '') + dt_datetime.getHours() + ":"
		+ (dt_datetime.getMinutes() < 10 ? '0' : '') + (dt_datetime.getMinutes()) + ":"
		+ (dt_datetime.getSeconds() < 10 ? '0' : '') + (dt_datetime.getSeconds())
	);
}

// timestamp parsing function
function cal_prs_tsmp1 (str_datetime) {
	// if no parameter specified return current timestamp
	if ((this.format[4] == 'pg')&&(str_datetime!='')&&(typeof(str_datetime)!='number')) {
		str_datetime = str_datetime.substring(0,4) + '-' + str_datetime.substring(4,6) + '-' + str_datetime.substring(6,8);
		}
	
	if (!str_datetime)
		return (new Date());

	// if positive integer treat as milliseconds from epoch
	if (RE_NUM.exec(str_datetime))
		return new Date(str_datetime);
		
	// else treat as date in string format
	var arr_datetime = str_datetime.split(' ');
	return this.prs_time(arr_datetime[1], this.prs_date(arr_datetime[0]));
}

// date parsing function
function cal_prs_date1 (str_date) {
	var arr_date = str_date.split(this.format[0]);
	if (this.format[4] == 'pg') {
		var arr_date = str_date.split('-');
		}
	if (arr_date.length != 3) return cal_error ("Invalid date format: '" + str_date + "'.\nFormat accepted is dd" + this.format[0] + "mm" + this.format[0] + "yyyy.");
	if (!arr_date[this.format[1]]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo day of month value can be found.");
	if (!RE_NUM.exec(arr_date[this.format[1]])) return cal_error ("Invalid day of month value: '" + arr_date[this.format[1]] + "'.\nAllowed values are unsigned integers.");
	if (!arr_date[this.format[2]]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo month value can be found.");
	if (!RE_NUM.exec(arr_date[this.format[2]])) return cal_error ("Invalid month value: '" + arr_date[this.format[2]] + "'.\nAllowed values are unsigned integers.");
	if (!arr_date[this.format[3]]) return cal_error ("Invalid date format: '" + str_date + "'.\nNo year value can be found.");
	if (!RE_NUM.exec(arr_date[this.format[3]])) return cal_error ("Invalid year value: '" + arr_date[this.format[3]] + "'.\nAllowed values are unsigned integers.");

	var dt_date = new Date();
	dt_date.setDate(1);

	if (arr_date[this.format[2]] < 1 || arr_date[this.format[2]] > 12) return cal_error ("Invalid month value: '" + arr_date[this.format[2]] + "'.\nAllowed range is 01-12.");
	dt_date.setMonth(arr_date[this.format[2]]-1);

	if (arr_date[this.format[3]] < 100) arr_date[this.format[3]] = Number(arr_date[this.format[3]]) + (arr_date[this.format[3]] < NUM_CENTYEAR ? 2000 : 1900);
	dt_date.setFullYear(arr_date[this.format[3]]);
	
	var dt_numdays = new Date(arr_date[this.format[3]], arr_date[this.format[2]], 0);
	dt_date.setDate(arr_date[this.format[1]]);
	if (dt_date.getMonth() != (arr_date[this.format[2]]-1)) return cal_error ("Invalid day of month value: '" + arr_date[this.format[1]] + "'.\nAllowed range is 01-"+dt_numdays.getDate()+".");
	return (dt_date)
}

// time parsing function
function cal_prs_time1 (str_time, dt_date) {

	if (!dt_date) return null;
	var arr_time = String(str_time ? str_time : '').split(':');

	if (!arr_time[0]) dt_date.setHours(0);
	else if (RE_NUM.exec(arr_time[0])) 
		if (arr_time[0] < 24) dt_date.setHours(arr_time[0]);
		else return cal_error ("Invalid hours value: '" + arr_time[0] + "'.\nAllowed range is 00-23.");
	else return cal_error ("Invalid hours value: '" + arr_time[0] + "'.\nAllowed values are unsigned integers.");
	
	if (!arr_time[1]) dt_date.setMinutes(0);
	else if (RE_NUM.exec(arr_time[1]))
		if (arr_time[1] < 60) dt_date.setMinutes(arr_time[1]);
		else return cal_error ("Invalid minutes value: '" + arr_time[1] + "'.\nAllowed range is 00-59.");
	else return cal_error ("Invalid minutes value: '" + arr_time[1] + "'.\nAllowed values are unsigned integers.");

	if (!arr_time[2]) dt_date.setSeconds(0);
	else if (RE_NUM.exec(arr_time[2]))
		if (arr_time[2] < 60) dt_date.setSeconds(arr_time[2]);
		else return cal_error ("Invalid seconds value: '" + arr_time[2] + "'.\nAllowed range is 00-59.");
	else return cal_error ("Invalid seconds value: '" + arr_time[2] + "'.\nAllowed values are unsigned integers.");

	dt_date.setMilliseconds(0);
	return dt_date;
}

function cal_error (str_message) {
	alert (str_message);
	return null;
}

function set_datetime(n_datetime, b_close) {
	if (!obj_caller) return;

	var dt_datetime = obj_caller.prs_time(
		(document.cal ? document.cal.time.value : ''),
		new Date(n_datetime)
	);

	if (!dt_datetime) return;
	if (b_close) {
		this.close();
		obj_caller.target.value = (document.cal
			? obj_caller.gen_tsmp(dt_datetime)
			: obj_caller.gen_date(dt_datetime)
		);
	}
	else obj_caller.popup(dt_datetime.valueOf());
}