//*******************************************************************
//* Nombre:
//*    checkForm.js
//*
//* Descripcion:
//*    Esta funci\363n valida los campos de un formulario
//*    desde una plantilla html se definen campos obligatorios 
//*    como campos "hidden". Nombre de estos campos tiene que ser contruido
//*    por un prefijo
//*    Donde  los prefijos posibles son:
//*     r_   - valida campos alfanumericos
//*     i_   - valida campos enteros
//*     e_   - valida campos enteros
//*     d_   - valida campos de fecha de formato definido por un expresion regular: \\d{4}/\\d{2}/\\d{2}
//*     c_   - valida campos de correo electronico
//*     v_   - valida campos de versiones formato definido por una expresion regualr: \\d+\.\\d+  e.g.:(2.0, 3.1)
//*         
//*    
//* Parametros:
//*    Objeto Formulario que se quiere validar
//*    Su Numero de elementos
//*
//* Valor de retorno:
//*    true  -> Si la varidacion ha sido correcta se envia formulario
//*    false -> Si algun valor introducido por el usuario era 
//*             incorrecto : correspondiente mensaje de error
//*******************************************************************/

var new_fieldname = ""
var validar_form_e1 = "" ;
var validar_form_e21 = "Casilla" ;
var validar_form_e22 = "es obligatoria" ;
var validar_form_e32 = "es incorrecta" ;
var validar_form_e42 = "no puede contener espacios en blanco" ;
var validar_form_e43 = "Tiene que introducir una cuenta de correo v\341lida " ;
var validar_form_e43_en = "Invalid E-mail address " ;

var validar_form_e52 = "no puede seleccionar la opcion vac\355a" ;
var validar_form_e62 = "debe ser un n\372mero entero" ;
var validar_form_e72 = "debe ser un n\372mero entero" ;
var validar_form_e82 = "debe ser num\351rico" ;
var validar_form_e114 = "Reduzca el texto del campo" ;
var validar_form_e115 = "caracteres" ;
var validar_form_e92 = "debe estar comprendido entre " ;
var validar_form_e93 = "y" ;
var validar_form_e102 = "debe ser mayor que " ;
var validar_form_e112 = "debe ser menor que " ;
var validar_form_e120 = "Tiene que introducir una version valida, e.g 2.0 " ;


function check(form,x) {
	var ok = true;
	var message = "";
	var more_message = "";
	var showmsg = "no";
	x = x-1;
	for (var i=0; i<= x; i++) {

		var messenger = form.elements[i].name;
		messenger = messenger.substring(0, 2);
		var fieldname = form.elements[i].name;
		fieldname = fieldname.substring(2);

		if (messenger == "r_") {
			more_message = r_check(form,x,fieldname,i);
		} else if (messenger == "i_") {
			more_message = i_check(form,x,fieldname,i);
		} else if (messenger == "e_") {
			more_message = e_check(form,x,fieldname,i);
		} else if (messenger == "d_") {
			more_message = d_check(form,x,fieldname,i);
		} else if (messenger == "c_") {
			more_message = c_check(form,x,fieldname,i);
		} else if (messenger == "x_") {
			more_message = x_check(form,x,fieldname,i);
		}else if (messenger == "v_") {
			more_message = v_check(form,x,fieldname,i);
		}
		if (more_message != "") {
			if (message == "") {
				message = more_message;
				more_message="";
			} else {
		       		message = message + "\n" + more_message;
				more_message = "";
				ok = false;
			}
	        }
		if (message > "") {
			showmsg = "si";
			ok = false;
		}
	}

	if (showmsg == "si") {
		more_message = validar_form_e1 + "\n";
		//alert(" Campos incorrectos o incompletos:\n\n" + message );
		alert(more_message + message );
		ok = false;
	}
	return ok;
}

function r_check(form,x,fieldname,i) {
	var msg_addition = "";
	new_fieldname = fieldname;
	for (var y = 0; y <= x; y++) {
            if ((form.elements[y].type == "radio" || form.elements[y].type == "checkbox") && form.elements[y].name == new_fieldname && form.elements[y].checked == true) {
    		msg_addition = "";
		break;
            } else if ((form.elements[y].type == "radio" || form.elements[y].type == "checkbox") && form.elements[y].name == new_fieldname && form.elements[y].checked == false) {
		msg_addition = form.elements[i].value;

	    } else if (form.elements[y].type == "select-one") {
			var l = form.elements[y].selectedIndex;
			if (form.elements[y].name == fieldname && form.elements[y].options[l].value != "") {
				msg_addition = "";
				break;
			} else if (form.elements[y].name == fieldname && form.elements[y].options[l].value == "") {
				msg_addition = form.elements[i].value;
			}
            } else if (form.elements[y].name == fieldname && form.elements[y].value == "" && form.elements[y].type != "radio" && form.elements[y].type != "checkbox" && form.elements[y].type != "select-one") {
			msg_addition  =  form.elements[i].value;
			break;

            } else if (form.elements[y].name == fieldname && form.elements[y].value != "" && form.elements[y].type != "radio" && form.elements[y].type != "checkbox" && form.elements[y].type != "select-one") {
		msg_addition = "";
            }
	}
	return(msg_addition);
}


function c_check(form,x,fieldname,i) {
	var msg_addition = "";
	for (var y = 0; y <= x; y++) {
		var valor= form.elements[y].value;
		if (form.elements[y].name == fieldname ){
			if( valor == "" ){
				msg_addition = form.elements[i].value;
			} else if( valor.indexOf("@") == -1 || valor.indexOf("@") == 0 || valor.indexOf("@") == valor.length - 1) {
				msg_addition +=  validar_form_e43 + "\n";
				break;
			}
		}
	}
	return(msg_addition);
}

function x_check(form,x,fieldname,i) {
	var msg_addition = "";
	for (var y = 0; y <= x; y++) {
		var valor= form.elements[y].value;
		if (form.elements[y].name == fieldname ){
			if( valor == "" ){
				msg_addition = form.elements[i].value;
			} else if( valor.indexOf("@") == -1 || valor.indexOf("@") == 0 || valor.indexOf("@") == valor.length - 1) {
				msg_addition +=  validar_form_e43_en + "\n";
				break;
			}
		}
	}
	return(msg_addition);
}

function i_check(form,x,fieldname,i) {

	var msg_addition = "";
	for (var y = 0; y <= x; y++) {
		if (form.elements[y].name == fieldname) break;
	}
	inputStr = form.elements[y].value.toString();
	if (inputStr == "") {
			msg_addition = form.elements[i].value;
	} else {
		for (var c = 0; c < inputStr.length; c++) {
			var oneChar = inputStr.charAt(c);
			if (c == 0 && oneChar == "-") {
				continue
			}
			if (oneChar < "0" || oneChar > "9") {
					msg_addition = form.elements[i].value
			}
		}
	}
	return(msg_addition);
}

//Valida enteros
function e_check(form,x,fieldname,i) {

	var msg_addition = "";
	for (var y = 0; y <= x; y++) {
		if (form.elements[y].name == fieldname) break;
	}
	inputStr = form.elements[y].value.toString();
	if (inputStr != "") {
		for (var c = 0; c < inputStr.length; c++) {
			var oneChar = inputStr.charAt(c);
			if (c == 0 && oneChar == "-") {
				continue
			}
			if (oneChar < "0" || oneChar > "9") {
				msg_addition = form.elements[i].value
			}
		}
	}
	return(msg_addition);
}

function d_check(form,x,fieldname,i) {
	for (var y=0; y <= x; y++) {
		if (form.elements[y].name == fieldname) break;
	}
	var msg_addition = ""
	var pattern = new RegExp("\\d{4}/\\d{2}/\\d{2}","g") ;
	var sDate = form.elements[y].value ;
	var OK = pattern.test(sDate) ;
	if ( ! OK ) {
		msg_addition = form.elements[i].value
	}
	return (msg_addition) ;

}

function v_check(form,x,fieldname,i) {
	for (var y=0; y <= x; y++) {
		if (form.elements[y].name == fieldname) break;
	}


    var msg_addition = ""
	var pattern = new RegExp("^\\d+\.\\d+\\w*$") ;
	var sDate = form.elements[y].value ;
	var OK = pattern.test(sDate) ;
	if ( ! OK ) {
	    //msg_addition +=  validar_form_e1120 + "\n";
		msg_addition += form.elements[i].value
	}
	return (msg_addition) ;

}

function isInteger(sDate) {
	var new_msg = "true";
	inputStr = sDate.toString();

	for (var i = 0; i < inputStr.length; i++) {
			var oneChar = inputStr.charAt(i);
			if ((oneChar < "0" || oneChar > "9") && oneChar != "/") {
						new_msg = "false";
			}
	}
	return (new_msg);
}

function asc(each_char) {
	var n = 0;
	var char_str = charSetStr();
	for (i = 0; i < char_str.length; i++) {
		if (each_char == char_str.substring(i, i+1)) {
			break;
		}
	}
	return i + 32;
}

function charSetStr() {
	var str = ' !"#$%&' + "'" + '()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~';
	return str;
}