/*
//------ Extensions of Object object -------

Object.prototype.clone = function() {
  return eval(uneval(this));
}

*/
//------ Extensions of Date object ------

Date.prototype.add = function(addtype, amount) {
  var aDate = this.clone();
  if (addtype == "y") aDate.setFullYear(aDate.getFullYear() + amount);
  else if (addtype == "M") aDate.setMonth(aDate.getMonth() + amount);
  else if (addtype == "d") aDate.setDate(aDate.getDate() + amount);
  else if (addtype == "H") aDate.setHours(aDate.getHours() + amount);
  else if (addtype == "m") aDate.setMinutes(aDate.getMinutes() + amount);
  else if (addtype == "s") aDate.setSeconds(aDate.getSeconds() + amount);
  return aDate;
}
Date.prototype.addYears = function(amount) { return this.add("y", amount); }
Date.prototype.addMonths = function(amount) { return this.add("M", amount); }
Date.prototype.addDays = function(amount) { return this.add("d", amount); }
Date.prototype.addHours = function(amount) { return this.add("H", amount); }
Date.prototype.addMinutes = function(amount) { return this.add("m", amount); }
Date.prototype.addSeconds = function(amount) { return this.add("s", amount); }
Date.prototype.clone = function() {
  var aDate = new Date(this.getFullYear(), this.getMonth(), this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds());
  return aDate;
}
Date.prototype.monthName = function() {
  var amonth = this.getMonth();
  if (amonth == 0) return translate("Januari");
  else if (amonth == 1) return translate("Februari");
  else if (amonth == 2) return translate("Mars");
  else if (amonth == 3) return translate("April");
  else if (amonth == 4) return translate("Maj");
  else if (amonth == 5) return translate("Juni");
  else if (amonth == 6) return translate("Juli");
  else if (amonth == 7) return translate("Augusti");
  else if (amonth == 8) return translate("September");
  else if (amonth == 9) return translate("Oktober");
  else if (amonth == 10) return translate("November");
  else if (amonth == 11) return translate("December");
  else return "";
}
Date.prototype.dayName = function() {
  var aday = this.getDay();
  if (aday == 0) return translate("Söndag");
  else if (aday == 1) return translate("Måndag");
  else if (aday == 2) return translate("Tisdag");
  else if (aday == 3) return translate("Onsdag");
  else if (aday == 4) return translate("Torsdag");
  else if (aday == 5) return translate("Fredag");
  else if (aday == 6) return translate("Lördag");
  else return "";
}
Date.prototype.dayEquals = function(adate) {
  return this.getFullYear() == adate.getFullYear() && this.getMonth() == adate.getMonth() && this.getDate() == adate.getDate();
}
Date.prototype.dateString = function() {
  var m = (this.getMonth() < 9 ? "0" : "") + String(this.getMonth() + 1);
  var d = (this.getDate() < 10 ? "0" : "") + String(this.getDate());
  return this.getFullYear() + "-" + m + "-" + d;
}
Date.prototype.dateTimeString = function() {
  var h = (this.getHours() < 10 ? "0" : "") + String(this.getHours());
  var m = (this.getMinutes() < 10 ? "0" : "") + String(this.getMinutes());
  var s = (this.getSeconds() < 10 ? "0" : "") + String(this.getSeconds());
  return this.dateString + " " + h + ":" + m + ":" + s;
}
Date.parse = function(datestr) {
  try {
    var adate = new Date();
    var dt = datestr.split(' ');
    var date = dt[0].split('-');
    adate.setFullYear(parseInt(date[0]));
    adate.setMonth(parseInt(date[1])-1);
    adate.setDate(parseInt(date[2]));
    if (adate.getFullYear() != parseInt(date[0]) || adate.getMonth() != parseInt(date[1])-1 || adate.getDate() != parseInt(date[2]))
      return null;
    if (dt.length > 1 && dt[1].length > 0) {
      var time = dt[1].split(':');
      adate.setHours(parseInt(time[0]));
      if (adate.getHours() != parseInt(time[0])) return null;
      if (time.length > 1) {
        adate.setMinutes(parseInt(time[1]));
        if (adate.getMinutes() != parseInt(time[1])) return null;
      }
      if (time.length > 2) {
        adate.setSeconds(parseInt(time[2]));
        if (adate.getSeconds() != parseInt(time[2])) return null;
      }
    }
    if (adate == "Invalid Date") return null;
    return adate;
  }
  catch(e) { return null; }
}




//------ Extensions of Number object ------

Number.formatFunctions = {count:0};
Number.prototype.NaN         = 'NaN';
Number.prototype.posInfinity = 'Infinity';
Number.prototype.negInfinity = '-Infinity';

Number.prototype.numberFormat = function(format, context) {
  if (isNaN(this) ) return Number.prototype.NaNstring;
  else if (this == +Infinity ) return Number.prototype.posInfinity;
  else if ( this == -Infinity) return Number.prototype.negInfinity;
  else if (Number.formatFunctions[format] == null) Number.createNewFormat(format);
  return this[Number.formatFunctions[format]](context);
}

Number.createNewFormat = function(format) {
  var funcName = "format" + Number.formatFunctions.count++;
  Number.formatFunctions[format] = funcName;
  var code = "Number.prototype." + funcName + " = function(context){\n";

  var formats = format.split(";");
  switch (formats.length) {
    case 1:
      code += Number.createTerminalFormat(format);
      break;
    case 2:
      code += "return (this < 0) ? this.numberFormat(\""
        + String.escape(formats[1])
        + "\", 1) : this.numberFormat(\""
        + String.escape(formats[0])
        + "\", 2);";
      break;
    case 3:
      code += "return (this < 0) ? this.numberFormat(\""
        + String.escape(formats[1])
        + "\", 1) : ((this == 0) ? this.numberFormat(\""
        + String.escape(formats[2])
        + "\", 2) : this.numberFormat(\""
        + String.escape(formats[0])
        + "\", 3));";
      break;
    default:
      code += "throw 'Too many semicolons in format string';";
      break;
  }
  eval(code + "}");
}

Number.createTerminalFormat = function(format) {
  // If there is no work to do, just return the literal value
  if (format.length > 0 && format.search(/[0#?]/) == -1)
    return "return '" + String.escape(format) + "';\n";

  // Negative values are always displayed without a minus sign when section separators are used.
  var code = "var val = (context == null) ? new Number(this) : Math.abs(this);\n";
  var thousands = false;
  var lodp = format;
  var rodp = "";
  var ldigits = 0;
  var rdigits = 0;
  var scidigits = 0;
  var scishowsign = false;
  var sciletter = "";
  // Look for (and remove) scientific notation instructions, which can be anywhere
  m = format.match(/\..*(e)([+-]?)(0+)/i);
  if (m) {
    sciletter = m[1];
    scishowsign = (m[2] == "+");
    scidigits = m[3].length;
    format = format.replace(/(e)([+-]?)(0+)/i, "");
  }
  // Split around the decimal point
  var m = format.match(/^([^.]*)\.(.*)$/);
  if (m) {
    lodp = m[1].replace(/\./g, "");
    rodp = m[2].replace(/\./g, "");
  }
  // Look for %
  if (format.indexOf('%') >= 0) code += "val *= 100;\n";
  // Look for comma-scaling to the left of the decimal point
  m = lodp.match(/(,+)(?:$|[^0#?,])/);
  if (m) code += "val /= " + Math.pow(1000, m[1].length) + "\n;";
  // Look for comma-separators
  if (lodp.search(/[0#?],[0#?]/) >= 0) thousands = true;
  // Nuke any extraneous commas
  if ((m) || thousands) lodp = lodp.replace(/,/g, "");
  // Figure out how many digits to the l/r of the decimal place
  m = lodp.match(/0[0#?]*/);
  if (m) ldigits = m[0].length;
  m = rodp.match(/[0#?]*/);
  if (m) rdigits = m[0].length;
  // Scientific notation takes precedence over rounding etc
  if (scidigits > 0) {
    code += "var sci = Number.toScientific(val,"
      + ldigits + ", " + rdigits + ", " + scidigits + ", " + scishowsign + ");\n"
      + "var arr = [sci.l, sci.r];\n";
  }
  else {
    // If there is no decimal point, round to nearest integer, AWAY from zero
    if (format.indexOf('.') < 0)
      code += "val = (val > 0) ? Math.ceil(val) : Math.floor(val);\n";
    // Numbers are rounded to the correct number of digits to the right of the decimal
    code += "var arr = val.round(" + rdigits + ").toFixed(" + rdigits + ").split('.');\n";
    // There are at least "ldigits" digits to the left of the decimal, so add zeros if needed.
    code += "arr[0] = (val < 0 ? '-' : '') + String.leftPad((val < 0 ? arr[0].substring(1) : arr[0]), "
        + ldigits + ", '0');\n";
  }
  // Add thousands separators
  if (thousands) code += "arr[0] = Number.addSeparators(arr[0]);\n";
  // Insert the digits into the formatting string.  On the LHS, extra digits are copied
  // into the result.  On the RHS, rounding has chopped them off.
  code += "arr[0] = Number.injectIntoFormat(arr[0].reverse(), '" + String.escape(lodp.reverse()) + "', true).reverse();\n";
  if (rdigits > 0) code += "arr[1] = Number.injectIntoFormat(arr[1], '" + String.escape(rodp) + "', false);\n";
  if (scidigits > 0) code += "arr[1] = arr[1].replace(/(\\d{" + rdigits + "})/, '$1" + sciletter + "' + sci.s);\n";
  return code + "return arr.join('.');\n";
}

Number.toScientific = function(val, ldigits, rdigits, scidigits, showsign) {
  var result = {l:"", r:"", s:""};
  var ex = "";
  // Make ldigits + rdigits significant figures
  var before = Math.abs(val).toFixed(ldigits + rdigits + 1).trim('0');
  // Move the decimal point to the right of all digits we want to keep,
  // and round the resulting value off
  var after = Math.round(new Number(before.replace(".", "").replace(new RegExp("(\\d{" + (ldigits + rdigits) + "})(.*)"), "$1.$2"))).toFixed(0);
  // Place the decimal point in the new string
  if (after.length >= ldigits)
    after = after.substring(0, ldigits) + "." + after.substring(ldigits);
  else
    after += '.';
  // Find how much the decimal point moved.  This is #places to LODP in the original
  // number, minus the #places in the new number.  There are no left-padded zeroes in
  // the new number, so the calculation for it is simpler than for the old number.
  result.s = (before.indexOf(".") - before.search(/[1-9]/)) - after.indexOf(".");
  // The exponent is off by 1 when it gets moved to the left.
  if (result.s < 0) result.s++;
  // Split the value around the decimal point and pad the parts appropriately.
  result.l = (val < 0 ? '-' : '') + String.leftPad(after.substring(0, after.indexOf(".")), ldigits, "0");
  result.r = after.substring(after.indexOf(".") + 1);
  if (result.s < 0) ex = "-";
  else if (showsign) ex = "+";
  result.s = ex + String.leftPad(Math.abs(result.s).toFixed(0), scidigits, "0");
  return result;
}

Number.prototype.round = function(decimals) {
  if (decimals > 0) {
    var m = this.toFixed(decimals + 1).match(new RegExp("(-?\\d*)\.(\\d{" + decimals + "})(\\d)\\d*$"));
    if (m && m.length)
      return new Number(m[1] + "." + String.leftPad(Math.round(m[2] + "." + m[3]), decimals, "0"));
  }
  return this;
}

Number.injectIntoFormat = function(val, format, stuffExtras) {
  var i = 0;
  var j = 0;
  var result = "";
  var revneg = val.charAt(val.length - 1) == '-';

  if ( revneg ) val = val.substring(0, val.length - 1);
  while (i < format.length && j < val.length && format.substring(i).search(/[0#?]/) >= 0) {
    if (format.charAt(i).match(/[0#?]/)) {
      // It's a formatting character; copy the corresponding character
      // in the value to the result
      if (val.charAt(j) != '-') result += val.charAt(j);
      else result += "0";
      j++;
    }
    else
      result += format.charAt(i);
    ++i;
  }
  if ( revneg && j == val.length )
    result += '-';
  if (j < val.length) {
    if (stuffExtras) result += val.substring(j);
    if ( revneg ) result += '-';
  }
  if (i < format.length) result += format.substring(i);
  return result.replace(/#/g, "").replace(/\?/g, " ");
}

Number.addSeparators = function(val) {
//  return val.reverse().replace(/(\d{3})/g, "$1,").reverse().replace(/^(-)?,/, "$1");
  return val.reverse().replace(/(\d{3})/g, "$1 ").reverse().replace(/^(-)?,/, "$1");
}




//-------- Extensions of String object ----------


String.prototype.reverse = function() {
  var res = "";
  for (var i = this.length; i > 0; --i) {
    res += this.charAt(i - 1);
  }
  return res;
}

String.prototype.trim = function(ch) {
  if (!ch) ch = ' ';
  return this.replace(new RegExp("^" + ch + "+|" + ch + "+$", "g"), "");
}

String.leftPad = function (val, size, ch) {
  var result = new String(val);
  if (ch == null) {
    ch = " ";
  }
  while (result.length < size) {
    result = ch + result;
  }
  return result;
}

String.escape = function(s) {
  return s.replace(/('|\\)/g, "\\$1");
}