Stefanius67 / Formgenerator

function FormDataValidator(aMand, aDate, aTime, aInt, aCur)

{

    this.aMand = aMand;

    this.aDate = aDate;

    this.aTime = aTime;

    this.aInt = aInt;

    this.aCur = aCur;

    this.focusItem = null;

    this.focusTabIndex = null;

    this.errors = 0;

}

FormDataValidator.prototype.validate = function()

{

    var i;

    // check mandatory fields

        for (i = 0; i < this.aMand.length; i++) {

            this.checkMandatory(document.getElementById(this.aMand[i]));

        }

    }

    // validate date input

        for (i = 0; i < this.aDate.length; i++) {

            this.checkDate(document.getElementById(this.aDate[i]));

        }

    }

    // validate time input

        for (i = 0; i < this.aTime.length; i++) {

            this.checkTime(document.getElementById(this.aTime[i]));

        }

    }

    // validate integer input

        for (i = 0; i < this.aInt.length; i++) {

            this.checkInteger(document.getElementById(this.aInt[i]));

        }

    }

    // validate currency/float input

        for (i = 0; i < this.aCur.length; i++) {

            this.checkCurrency(document.getElementById(this.aCur[i]));

        }

    }

    // if errors found, dispplay message and set focus to last input

    if (this.errors > 0) {

        var strMsg;

        // TODO: language

            strMsg = unescape("Das rot gekennzeichnete Feld wurde nicht korrekt ausgef%FCllt\n\n");

        } else {

            strMsg = unescape("Die rot gekennzeichneten Felder wurden nicht korrekt ausgef%FCllt\n\n");

        }

        strMsg += unescape("Korrigieren oder vervollst%E4ndigen Sie bitte Ihre Angaben.");

            this.focusItem.focus();

        }

        return false;

    }

    return true;

}

FormDataValidator.prototype.checkMandatory = function(item)

{

        this.setError((item.value == '' || item.value == 'null'), item);

    }

}

FormDataValidator.prototype.checkDate = function(item)

{

        var date = this.isValidDate(item.value);

        if (date !== false) {

            item.value = date;

            this.setError(false, item);

        } else {

            this.setError(true, item);

        }

    }

}

FormDataValidator.prototype.checkTime = function(item)

{

        var time = this.isValidTime(item.value); 

        if (time !== false) {

            item.value = time;

            this.setError(false, item);

        } else {

            this.setError(true, item);

        }

    }

}

FormDataValidator.prototype.checkInteger = function(item)

{

        var integer = this.isValidInteger(item.value);

        if (integer !== false) {

            item.value = integer;

            this.setError(false, item);

        } else {

            this.setError(true, item);

        }

    }

}

FormDataValidator.prototype.checkCurrency = function(item)

{

        var currency = this.isValidCurrency(item.value);

        if (currency !== false) {

            item.value = currency;

            this.setError(false, item);

        } else {

            this.setError(true, item);

        }

    }

}

FormDataValidator.prototype.setError = function(set, item)

{

    if (set) {

        item.className = item.className.replace( /Mand/, 'MError' );

        item.className = item.className.replace( /OK/, 'Error' );

        this.setFocusItem(item);

        this.errors++;

    } else {

        item.className = item.className.replace( /MError/, 'Mand' );

        item.className = item.className.replace( /Error/, 'OK' );

    }

}

FormDataValidator.prototype.setFocusItem = function(item)

{

    if (!this.focusTabIndex || this.focusTabIndex > item.tabIndex) {

        this.focusTabIndex = item.tabIndex;

        this.focusItem = item;

    }

}

FormDataValidator.prototype.isValidDate = function(strDate)

{

    // remove all whitespace

    strDate = strDate.toString().trim();

    // ',' is replaced with '.' (fast input through num-pad...)

    strDate = strDate.replace(/,/g, ".");

    // we only accept sequence D.M.Y

    var aSplit = strDate.split(".");

    // First there must be three parts

    if (aSplit.length != 3) {

        return false;

    }

    // Caution: remove leading '0' otherwise parseInt treats values as octal and return '0' in case of '08' and '09' !!!!

    var iD = parseInt(aSplit[0].replace(/^0+/,""));

    var iM = parseInt(aSplit[1].replace(/^0+/,""));

    var iY = parseInt(aSplit[2].replace(/^0+/,""));

        return false;

    }

    // values < 25 are 21'st century and 25...99 20'st Century!

    if (iY < 100) {

        if (iY < 33) {

            iY += 2000;

        } else {

            iY += 1900;

        }

    }

    if (iY < 1900) {

        return false;

    }

    iM--;

    // initializte Date-Object

    var date = new Date(iY, iM, iD);

    // and compare all parts

    var iD2 = date.getDate();

    var iM2 = date.getMonth();

    var iY2 = date.getFullYear();

    if (iD != iD2 || iM != iM2 || iY != iY2) {

        // alert( 'In: ' + iD + '.' + iM + '.' + iY + '\nOut: ' + iD2 + '.' + iM2 + '.' + iY2 );

        return false;

    }

    var strDate = '';

    if (iD < 10) {

        strDate = '0';

    }

    strDate += iD + '.';

    if (iM < 10) {

        strDate += '0';

    }

    strDate += iM + '.' + iY;

    return strDate;

}

FormDataValidator.prototype.isValidTime = function(strTime)

{

    // remove all whitespace

    strTime = strTime.toString().trim();

    // we only accept ':' as Delimiter and expect sequence H:i[:s]

    var aSplit = strTime.split(":");

    switch (aSplit.length) {

        case 1: // no separator - interpret as minutes

            if (aSplit[0] != '0' && aSplit[0] != '00') {

                iM = parseInt(aSplit[0].replace(/^0+/,""));

            }

            break;

        case 2: // hour:minutes specified

        case 3: // hour:minutes:seconds

            // only handle h:m

            if (aSplit[0] != '0' && aSplit[0] != '00') {

                iH = parseInt(aSplit[0].replace(/^0+/,""));

            }

            if (aSplit[1] != '0' && aSplit[1] != '00') {

                iM = parseInt(aSplit[1].replace(/^0+/,""));

            }

            break;

        default:

            // all other combinations are invalid

            return false;

    }

        return false;

    }

    if (iM > 59) {

        // javascript down know an operator like DIV (integer division)

        iH += (iM - (iM % 60)) / 60;

        iM = iM % 60;

    }

    // ... 23:59 is the end

    if (iH > 23) {

        return false;

    }

    // initializte Date-Object

    var date = new Date(0, 0, 0, iH, iM, iS);

    // and compare relevant parts

    var iH2 = date.getHours();

    var iM2 = date.getMinutes();

    if (iH != iH2 || iM != iM2) {

        return false;

    }

    strTime = '';

    if (iH < 10) {

        strTime = '0';

    }

    strTime += iH + ':';

    if (iM < 10) {

        strTime += '0';

    }

    strTime += iM; // + ':00';

    return strTime;

}

FormDataValidator.prototype.isValidInteger = function(strInt)

{

    // remove all whitespace

    strInt = strInt.toString().trim();

    if (isNaN(strInt) || strInt.indexOf('.') !== -1) {

        return false;

    }

    if (strInt == '') {

        strInt = '0';

    }

    return strInt;

}

FormDataValidator.prototype.isValidCurrency = function(strCur)

{

    // remove all whitespace

    strCur = strCur.toString().trim();

    // remove thousands separator and replace comma to point

    strCur = strCur.replace( ".", "" );

    strCur = strCur.replace( ",", "." );

    if (isNaN(strCur)) {

        return false;

    }

    if (strCur == '') {

        strCur = '0';

    }

    strCur = Number.parseFloat(strCur).toFixed(2);

    strCur = strCur.replace( ".", "," );

    strCur = strCur.replace(/\B(?=(\d{3})+(?!\d))/g, ".");        

    return strCur;

}