// Filename: calendar1.js
//
// Modul: Tigra Calendar, JavaScript-Funktionen
//
// Autoren: Firma Softcomplex:  http://www.softcomplex.com/products/tigra_calendar/
//
// Zweck: Beinhaltet JavaScript Funktionen um Kalenderdarstellung zu erstellen.
//        Europaeisches Datumsformat. Siehe auch die Datei calendar.php

//
// Sicherheitsstatus:        *** ADMIN ***
//
// CVS-Version / Datum: $Id: calendar1.js,v 1.8 2009/07/07 14:04:15 fontajos Exp $
//
// Bemerkungen:
// - 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: calendar1.js and calendar.php
// - PhPepperShop note: Englische Texte uebersetzt, Delimiter und calendar.html -> .php
//
// -----------------------------------------------------------------------
//
// Lizenz
// ======
// Tigra Calender, (C) Softcomplex, http://www.softcomplex.com/products/tigra_calendar/
// PhPepperShop Shopsystem Copyright (C)2001-2005 Glarotech GmbH, Reto Glanzmann, Jose Fontanil
//
// -----------------------------------------------------------------------

// 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 = false;
// Datum Delimiterzeichen, default = -
var DATUM_DELIMITER = ".";
// Zeit Delimiterzeichen, default = :
var ZEIT_DELIMITER = ":";
// Falls die Zeit nicht definiert ist, wird folgende Zeitangabe verwendet
var ZEIT_NOT_GIVEN_REPLACEMENT = "00:00:00";
// Falls calendar.php nicht aus dem Admin-Verzeichnis aufgerufen wird, default = ''
var SCRIPT_WEB_PFAD = '';

var calendars = [];
var RE_NUM = /^\-?\d+$/;

// read page charset
var page_charset = 'undefined';
if (document.characterSet && document.characterSet != '') {
    page_charset = document.characterSet.toLowerCase();
}
else if (document.charset && document.charset != '') {
    page_charset = document.charset.toLowerCase();
}
if (page_charset == 'undefined') {
    page_charset == '';
}

function calendar1(obj_target) {

        // assigning methods
        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;
        this.datum_delimiter = DATUM_DELIMITER;
        this.zeit_delimiter = ZEIT_DELIMITER;
        this.zeit_not_given_replacement = ZEIT_NOT_GIVEN_REPLACEMENT;
        this.script_web_pfad = SCRIPT_WEB_PFAD;

        // 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);
        if (!this.dt_current) return;

        var obj_calwindow = window.open(
                this.script_web_pfad + 'calendar.php?page_charset=' + page_charset + '&datetime=' + this.dt_current.valueOf()+ '&id=' + this.id,
                'Calendar', 'width=200,height='+(this.time_comp ? 215 : 190)+
                ',status=no,resizable=no,top=200,left=200,dependent=yes,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) {
        return (
                (dt_datetime.getDate() < 10 ? '0' : '') + dt_datetime.getDate() + this.datum_delimiter
                + (dt_datetime.getMonth() < 9 ? '0' : '') + (dt_datetime.getMonth() + 1) + this.datum_delimiter
                + dt_datetime.getFullYear()
        );
}
// time generating function
function cal_gen_time1 (dt_datetime) {
        return (
                (dt_datetime.getHours() < 10 ? '0' : '') + dt_datetime.getHours() + this.zeit_delimiter
                + (dt_datetime.getMinutes() < 10 ? '0' : '') + (dt_datetime.getMinutes()) + this.zeit_delimiter
                + (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 (!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(' ');

        // Falls keine Zeit angegeben wird, erstellen wir eine Fakezeit
        if (arr_datetime[1] == null) arr_datetime[1] = this.zeit_not_given_replacement;

        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.datum_delimiter);
        var date_error_part1 = "Ungültiges Datumsformat: '";

        if (arr_date.length != 3) return cal_error (date_error_part1 + str_date + "'.\nAkzeptiertes Format ist tt" + this.datum_delimiter + "mm" + this.datum_delimiter + "jjjj.");
        if (!arr_date[0]) return cal_error (date_error_part1 + str_date + "'.\nKein Tag im Monat Wert wurde gefunden.");
        if (!RE_NUM.exec(arr_date[0])) return cal_error ("Ungültiger Tag des Monats: '" + arr_date[0] + "'.\nErlaubte Werte sind Ganzzahlen.");
        if (!arr_date[1]) return cal_error (date_error_part1 + str_date + "'.\nKein Monatswert wurde gefunden.");
        if (!RE_NUM.exec(arr_date[1])) return cal_error ("Ungültiger Monatswert: '" + arr_date[1] + "'.\nErlaubte Werte sind Ganzzahlen.");
        if (!arr_date[2]) return cal_error (date_error_part1 + str_date + "'.\nNo year value can be found.");
        if (!RE_NUM.exec(arr_date[2])) return cal_error ("Ungültiger Jahreswert: '" + arr_date[2] + "'.\nErlaubte Werte sind Ganzzahlen.");

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

        if (arr_date[1] < 1 || arr_date[1] > 12) return cal_error ("Ungültiger Monatswert: '" + arr_date[1] + "'.\nErlaubtes Intervall ist 01-12.");
        dt_date.setMonth(arr_date[1]-1);

        if (arr_date[2] < 100) arr_date[2] = Number(arr_date[2]) + (arr_date[2] < NUM_CENTYEAR ? 2000 : 1900);
        dt_date.setFullYear(arr_date[2]);

        var dt_numdays = new Date(arr_date[2], arr_date[1], 0);
        dt_date.setDate(arr_date[0]);
        if (dt_date.getMonth() != (arr_date[1]-1)) return cal_error ("Ungültiger Tag im Monat Wert: '" + arr_date[0] + "'.\nErlaubte Werte sind 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(this.zeit_delimiter);

        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 ("Ungültiger Stundenwert: '" + arr_time[0] + "'.\nErlaubte Werte sind 00-23.");
        else return cal_error ("Ungültiger Stundenwert: '" + arr_time[0] + "'.\nErlaubt sind nur Ganzzahlen.");

        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 ("Ungültiger Minutenwert: '" + arr_time[1] + "'.\nErlaubte Werte sind 00-59.");
        else return cal_error ("Ungültiger Minutenwert: '" + arr_time[1] + "'.\nErlaubt sind nur Ganzzahlen.");

        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 ("Ungültiger Sekundenwert: '" + arr_time[2] + "'.\nErlaubte Werte sind 00-59.");
        else return cal_error ("Ungültiger Sekundenwert: '" + arr_time[2] + "'.\nErlaubt sind nur Ganzzahlen.");

        dt_date.setMilliseconds(0);
        return dt_date;
}

// show error message
function cal_error (str_message) {
        alert (str_message);
        return null;
}