// JavaScript Document
// Être compatible avec MSIE...
if ('undefined' == typeof Node)
    Node = { ELEMENT_NODE: 1, TEXT_NODE: 3 };

if(locale=='fre')
{
MSG_BLANK = ' est vide.';
MSG_NOT_A_MAIL = ' n\'est pas un mail valide.';
MSG_NOT_A_DATE = ' n\'est pas une date.';
MSG_NOT_A_DOUBLE = ' n\'est pas un nombre.';
MSG_NOT_AN_INTEGER = ' n\'est pas un nombre entier.';
MSG_TOO_LOW = ' est trop petit(e).';
MSG_TOO_HIGH = ' est trop grand(e).';
}else{
MSG_BLANK = ' is empty.';
MSG_NOT_A_MAIL = ' is not a valid email.';
MSG_NOT_A_DATE = ' is not a valid date.';
MSG_NOT_A_DOUBLE = ' is not a number.';
MSG_NOT_AN_INTEGER = ' is not a integer number.';
MSG_TOO_LOW = ' is too small.';
MSG_TOO_HIGH = 'is too big.';	
	
}

REGEX_AUTO_FIELD = /^[^_]+(_Req)?(_(Int|Dbl|Date|Mail)(_[0-9.]+){0,2})?$/;
REGEX_BLANK = /^\s*$/;
REGEX_DAY = /^(0?[1-9]|[1-2][0-9]|3[01])$/;
REGEX_MONTH = /^(0?[1-9]|1[0-2])$/;
REGEX_MAIL = /^([a-zA-Z0-9_-])+([.]?[a-zA-Z0-9_-]{1,})*@([a-zA-Z0-9-_]{2,}[.])+[a-zA-Z]{2,4}$/;
// Les multiples groupes vont nous découper l'ID tout seuls...
REGEX_TYPED_FIELD = /_(Int|Dbl|Date|Mail)(_([0-9.]+))?(_([0-9.]+))?$/;
REGEX_YEAR = /^[0-9]{2,4}$/;

FAULTY = null;

function addListener(element, baseName, handler) {
    if (element.addEventListener)
        element.addEventListener(baseName, handler, false);
    else if (element.attachEvent)
        element.attachEvent('on' + baseName, handler);
} // addListener

function addFormChecks() {

    var forms = document.forms;
		
    for (var index = 0; index < forms.length; ++index) {
        var form = forms.item(index);
        addListener(form, 'submit', checkForm);
    }
} // addFormChecks

function checkForm(e) {
			
    // Compatibilité MSIE / les autres...
    e = e || window.event;
    var form = e.target || e.srcElement;
    var errors = '';
    var faulty = null;
    for (var index = 0; index < form.elements.length; ++index) {
        var field = form.elements.item(index);
		//alert(field.name);
        // Vérification de syntaxe
        if (!field.id.match(REGEX_AUTO_FIELD))
            continue;
        var value = getFieldValue(field);
        // Champ requis ?
        if (field.id.match(/_Req/) && value.match(REGEX_BLANK)) {
			
            errors += getFieldName(field) + MSG_BLANK + '\n';
            faulty = faulty || field;
            continue;
        }
		
	// Champ typé ?
	var match = field.id.match(REGEX_TYPED_FIELD);
	if (match) {
	    var type = match[1];
	    var min = match[3];
	    var max = match[5];
	    var error = checkTypedField(value, type, min, max);
	    if (error) {
		errors += getFieldName(field) + error + '\n';
		faulty = faulty || field;
	    }
	}
    }
    if (!faulty){
		//alert('ok');
		FAULTY = false;
        return;
	}
    stopEvent(e);
    alert(errors);
    faulty.focus();
} // checkForm

function checkTypedField(value, type, min, max) {
    // Valeurs par défaut pour les bornes
    min = min || Number.NEGATIVE_INFINITY;
    max = max || Number.POSITIVE_INFINITY;
    var val;
    if ('Int' == type) {
        try {
            val = parseInt(value, 10);
	    if (String(val) != value)
	    	throw val;
        } catch (e) {
            return MSG_NOT_AN_INTEGER;
        }
    }
	if ('Mail' == type) {
        if (!value.match(REGEX_MAIL))
			return MSG_NOT_A_MAIL;        
    }
    if ('Dbl' == type) {
        try {
            val = parseFloat(value);
	    if (String(val) != value)
	    	throw val;
        } catch (e) {
            return MSG_NOT_A_DOUBLE;
        }
    }
    if ('Int' == type || 'Dbl' == type) {
        if (val < min)
            return MSG_TOO_LOW;
        if (val > max)
            return MSG_TOO_HIGH;
    }
    if ('Date' == type) {
        var comps = value.split('/');
        if (3 != comps.length || !comps[0].match(REGEX_DAY) ||
            !comps[1].match(REGEX_MONTH) ||
            !comps[2].match(REGEX_YEAR))
            return MSG_NOT_A_DATE;
    }
    return null;
} // checkTypedField

function getFieldName(field) {
    var label = getLabelFor(field);
    if (!label)
        return field.name;
    var text = '';
    var node = label.firstChild;
	
    // Parcours en profondeur, dérécursifié, du fragment sous le libellé
    while (true) {
        if (Node.ELEMENT_NODE == node.nodeType && node.hasChildNodes()){
            node = node.firstChild;
			text += node.nodeValue;
		}else if (Node.TEXT_NODE == node.nodeType){
            text += node.nodeValue;
		}if (node.nextSibling){
            node = node.nextSibling;
			//text += node.nodeValue;
		}else {
            node = node.parentNode;
            if (node == label)
                break;
            node = node.nextSibling;
        }
    }
    return text;
} // getFieldName

function getFieldValue(field) {
	//alert(field.tagName);
	//alert(field.name);
	if ('TEXTAREA' == field.tagName)
        return field.value;
    if ('INPUT' == field.tagName)
        return field.value;
    if ('SELECT' == field.tagName) {
		//alert(field.tagName);
        var value = '';
       /* if (-1 < field.selectedIndex) {*/
	    if (0 < field.selectedIndex){
            var opt = field.options[field.selectedIndex];
            value = opt.value;
            if (!value && !('value' in opt))
                value = opt.text;
        }
        return value;
    }
    return '';
} // getFieldValue

function getLabelFor(field) {
    var labels = document.getElementsByTagName('label');
    for (var index = 0; index < labels.length; ++index) {
        var label = labels.item(index);
        if (label.htmlFor == field.id)
            return label;
    }
    return null;
} // getLabelFor

function stopEvent(e) {
    if (e.stopPropagation) {
        e.stopPropagation();
        e.preventDefault();
    } else {
        e.cancelBubble = true;
        e.returnValue = false;
    }
} // stopEvent

addListener(window, 'load', addFormChecks);