/*ver. 0.2
24-04-2015 gestione campo indietro
10-03-2014 checkNumber: intercettatto il punto e sostituito con virgola
24-09-2009 prima versione. tolto formatNumber e strintToNumber da function.js

*/

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function formatNumber(num,decimalNum,bolLeadingZero,bolParens,bolCommas)
/**********************************************************************
	IN:
		NUM - the number to format
		decimalNum - the number of decimal places to format the number to
		bolLeadingZero - true / false - display a leading zero for
										numbers between -1 and 1
		bolParens - true / false - use parenthesis around negative numbers
		bolCommas - put commas as number separators.
 
	RETVAL:
		The formatted number!
 **********************************************************************/
{ 
/*
LOCALE IT --> SEPARATORE DECIMALE , SEPARATORE MIGLIAIA .
LOCALE EN --> SEPARATORE DECIMALE . SEPARATORE MIGLIAIA ,
//da gestire

*/

	var sepD=",";
	var sepM=".";
	
    if (isNaN(parseInt(num))) return "NaN";

	var tmpNum = num;
	var iSign = num < 0 ? -1 : 1;		// Get sign of number
	
	// Adjust number so only the specified number of numbers after
	// the decimal point are shown.
	tmpNum *= Math.pow(10,decimalNum);
	tmpNum = Math.round(Math.abs(tmpNum))
	tmpNum /= Math.pow(10,decimalNum);
	tmpNum *= iSign;					// Readjust for sign
	
	
	// Create a string object to do our formatting on
	var tmpNumStr = new String(tmpNum);
	//alert(tmpNumStr);
	//se locale=IT sostituisco i . con le ,
	tmpNumStr=tmpNumStr.replace('.',',');

	// See if we need to strip out the leading zero or not.
	if (!bolLeadingZero && num < 1 && num > -1 && num != 0)
		if (num > 0)
			tmpNumStr = tmpNumStr.substring(1,tmpNumStr.length);
		else
			tmpNumStr = "-" + tmpNumStr.substring(2,tmpNumStr.length);
		
	// See if we need to put in the commas
	if (bolCommas && (num >= 1000 || num <= -1000)) {
		var iStart = tmpNumStr.indexOf(sepD);
		if (iStart < 0)
			iStart = tmpNumStr.length;

		iStart -= 3;
		while (iStart >= 1) {
			tmpNumStr = tmpNumStr.substring(0,iStart) + sepM + tmpNumStr.substring(iStart,tmpNumStr.length)
			iStart -= 3;
		}		
	}

	// See if we need to use parenthesis
	if (bolParens && num < 0)
		tmpNumStr = "(" + tmpNumStr.substring(1,tmpNumStr.length) + ")";

	return tmpNumStr;		// Return our formatted string!
}

function formatNumb(num,decimalNum)
{
	// versione semplificata
	return formatNumber(num,decimalNum,true,false,false);
}

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function checkNumber(i, delKey,direction) {		
// utilizzare sui fild numerici
//onkeydown="checkNumber(this, event.keyCode,'down')" onkeyup="checkNumber(this, event.keyCode,'up');refreshResto()"
  
  
  if (i.value.length < 10) {
  	if (delKey!=9) { //tab
	  	if(delKey!=8 && delKey!=46 && delKey!=16 &&  !(delKey>36 && delKey<41)){ 
			//if the delete, backspace, shift, are not the keys that caused the keyup event.
  			if ((delKey >= 48 && delKey <= 57) || (delKey >= 96 && delKey <=105) || (delKey==188) || (delKey==112)) {
   				//tutto ok....
				//190 -->, 110 -->.
			} else if(delKey==190 || delKey==110) {
				i.value = i.value.substring(0,i.value.length-1);
				
				//alert(i.value.indexOf(","));
					
				if (i.value.indexOf(",")==-1) {
					i.value += ",";
				} 
			} else {
			    if (direction == "up") {
     				if (i.value.length == 0) {
      					i.value = "";
	     			} else {
		      			i.value = i.value.substring(0,i.value.length-1);
	   				}
    			}
	 		}
  			i.focus();
	  	}
 	} else {
 		if (direction == "down") {
			return checkNumber(i)
  		}
  	}
 }
}

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function stringToNumber(val)
{
		//levo ,00 eventuale
	var v00=val.indexOf(',00');
	if(v00!=-1)
		val=val.substr(0,v00);
	//levo il , finale eventuale
	var virg=val.indexOf(',');
	if(virg!=-1 &&virg==val.length-1 )
		val=val.substr(0,virg);
	
	
		//aggiustamenti punti
		val=val.replace(/[.]/,'');
		val=val.replace(/[.]/,'');
		val=val.replace(/[.]/,'');
		val=val.replace(/[.]/,'');
		val=val.replace(',','.');
		//tolgo gli zeri finali
		var dotIdx=val.indexOf('.');
		//alert("dotidx0"+dotIdx);
		if(dotIdx!=-1)
		{
			var j=val.length-1;
		/*	while(val.charAt(i)!='.' && val.charAt(i)=='0' ) NON FUNZIONA.. forse perche' usavo i invece di j!!*/
			while(val.charAt(j)!='.' )
			{
			//alert("j="+j+" val charat(j):"+val.charAt(j));
				if(val.charAt(j)=='0')
				{
					val=val.substr(0,j);
					j--;
				}
				else j=dotIdx;
			}
			if(val.charAt(val.length-1)=='.')
				val=val.substr(0,val.length-1);
		}
		
		num = parseFloat(val);
		return num;

	
}