Inputmask/lib/extensions/inputmask.numeric.extensions.js

/*
 Input Mask plugin extensions
 http://github.com/RobinHerbots/inputmask
 Copyright (c) Robin Herbots
 Licensed under the MIT license
 */
import escapeRegex from "../escapeRegex";
import Inputmask from "../inputmask";
import { keys } from "../keycode";
import { seekNext } from "../positioning";

const $ = Inputmask.dependencyLib;

function autoEscape(txt, opts) {
  let escapedTxt = "";
  for (let i = 0; i < txt.length; i++) {
    if (
      Inputmask.prototype.definitions[txt.charAt(i)] ||
      opts.definitions[txt.charAt(i)] ||
      opts.optionalmarker[0] === txt.charAt(i) ||
      opts.optionalmarker[1] === txt.charAt(i) ||
      opts.quantifiermarker[0] === txt.charAt(i) ||
      opts.quantifiermarker[1] === txt.charAt(i) ||
      opts.groupmarker[0] === txt.charAt(i) ||
      opts.groupmarker[1] === txt.charAt(i) ||
      opts.alternatormarker === txt.charAt(i)
    ) {
      escapedTxt += "\\" + txt.charAt(i);
    } else {
      escapedTxt += txt.charAt(i);
    }
  }
  return escapedTxt;
}

function alignDigits(buffer, digits, opts, force) {
  if (buffer.length > 0 && digits > 0 && (!opts.digitsOptional || force)) {
    var radixPosition = buffer.indexOf(opts.radixPoint),
      negationBack = false;
    if (opts.negationSymbol.back === buffer[buffer.length - 1]) {
      negationBack = true;
      buffer.length--;
    }

    if (radixPosition === -1) {
      buffer.push(opts.radixPoint);
      radixPosition = buffer.length - 1;
    }
    for (let i = 1; i <= digits; i++) {
      if (!isFinite(buffer[radixPosition + i])) {
        buffer[radixPosition + i] = "0";
      }
    }
  }

  if (negationBack) buffer.push(opts.negationSymbol.back);
  return buffer;
}

function findValidator(symbol, maskset) {
  let posNdx = 0;
  if (symbol === "+") {
    posNdx = seekNext.call(this, maskset.validPositions.length - 1);
  }
  for (let tstNdx in maskset.tests) {
    tstNdx = parseInt(tstNdx);
    if (tstNdx >= posNdx) {
      for (
        let ndx = 0, ndxl = maskset.tests[tstNdx].length;
        ndx < ndxl;
        ndx++
      ) {
        if (
          (maskset.validPositions[tstNdx] === undefined || symbol === "-") &&
          maskset.tests[tstNdx][ndx].match.def === symbol
        ) {
          return (
            tstNdx +
            (maskset.validPositions[tstNdx] !== undefined && symbol !== "-"
              ? 1
              : 0)
          );
        }
      }
    }
  }
  return posNdx;
}

function findValid(symbol, maskset) {
  let ret = -1;
  for (let ndx = 0, vpl = maskset.validPositions.length; ndx < vpl; ndx++) {
    const tst = maskset.validPositions[ndx];
    if (tst && tst.match.def === symbol) {
      ret = ndx;
      break;
    }
  }
  return ret;
}

function parseMinMaxOptions(opts) {
  if (opts.parseMinMaxOptions === undefined) {
    // convert min and max options
    if (opts.min !== null) {
      opts.min = opts.min
        .toString()
        .replace(new RegExp(escapeRegex(opts.groupSeparator), "g"), "");
      if (opts.radixPoint === ",")
        opts.min = opts.min.replace(opts.radixPoint, ".");
      opts.min = isFinite(opts.min) ? parseFloat(opts.min) : NaN;
      if (isNaN(opts.min)) opts.min = Number.MIN_VALUE;
    }
    if (opts.max !== null) {
      opts.max = opts.max
        .toString()
        .replace(new RegExp(escapeRegex(opts.groupSeparator), "g"), "");
      if (opts.radixPoint === ",")
        opts.max = opts.max.replace(opts.radixPoint, ".");
      opts.max = isFinite(opts.max) ? parseFloat(opts.max) : NaN;
      if (isNaN(opts.max)) opts.max = Number.MAX_VALUE;
    }
    opts.parseMinMaxOptions = "done";
  }
}

function genMask(opts) {
  opts.repeat = 0;
  // treat equal separator and radixpoint
  if (
    opts.groupSeparator === opts.radixPoint &&
    opts.digits &&
    opts.digits !== "0"
  ) {
    if (opts.radixPoint === ".") {
      opts.groupSeparator = ",";
    } else if (opts.radixPoint === ",") {
      opts.groupSeparator = ".";
    } else {
      opts.groupSeparator = "";
    }
  }
  // prevent conflict with default skipOptionalPartCharacter
  if (opts.groupSeparator === " ") {
    opts.skipOptionalPartCharacter = undefined;
  }

  // enforce placeholder to single
  if (opts.placeholder.length > 1) {
    opts.placeholder = opts.placeholder.charAt(0);
  }
  // only allow radixfocus when placeholder = 0
  if (opts.positionCaretOnClick === "radixFocus" && opts.placeholder === "") {
    opts.positionCaretOnClick = "lvp";
  }

  let decimalDef = "0",
    radixPointDef = opts.radixPoint;
  if (opts.numericInput === true && opts.__financeInput === undefined) {
    // finance people input style
    decimalDef = "1";
    opts.positionCaretOnClick =
      opts.positionCaretOnClick === "radixFocus"
        ? "lvp"
        : opts.positionCaretOnClick;
    opts.digitsOptional = false;
    if (isNaN(opts.digits)) opts.digits = 2;
    opts._radixDance = false;
    radixPointDef = opts.radixPoint === "," ? "?" : "!";
    if (
      opts.radixPoint !== "" &&
      opts.definitions[radixPointDef] === undefined
    ) {
      // update separator definition
      opts.definitions[radixPointDef] = {};
      opts.definitions[radixPointDef].validator = "[" + opts.radixPoint + "]";
      opts.definitions[radixPointDef].placeholder = opts.radixPoint;
      opts.definitions[radixPointDef].static = true;
      opts.definitions[radixPointDef].generated = true; // forced marker as generated input
    }
  } else {
    opts.__financeInput = false; // needed to keep original selection when remasking
    opts.numericInput = true;
  }

  let mask = "[+]",
    altMask;
  mask += autoEscape(opts.prefix, opts);
  if (opts.groupSeparator !== "") {
    if (opts.definitions[opts.groupSeparator] === undefined) {
      // update separator definition
      opts.definitions[opts.groupSeparator] = {};
      opts.definitions[opts.groupSeparator].validator =
        "[" + opts.groupSeparator + "]";
      opts.definitions[opts.groupSeparator].placeholder = opts.groupSeparator;
      opts.definitions[opts.groupSeparator].static = true;
      opts.definitions[opts.groupSeparator].generated = true; // forced marker as generated input
    }
    mask += opts._mask(opts);
  } else {
    mask += "9{+}";
  }
  if (opts.digits !== undefined && opts.digits !== 0) {
    const dq = opts.digits.toString().split(",");
    if (isFinite(dq[0]) && dq[1] && isFinite(dq[1])) {
      mask += radixPointDef + decimalDef + "{" + opts.digits + "}";
    } else if (isNaN(opts.digits) || parseInt(opts.digits) > 0) {
      if (opts.digitsOptional || opts.jitMasking) {
        altMask = mask + radixPointDef + decimalDef + "{0," + opts.digits + "}";
        // mask += "[" + opts.radixPoint + "]";
        opts.keepStatic = true;
      } else {
        mask += radixPointDef + decimalDef + "{" + opts.digits + "}";
      }
    }
  } else {
    opts.inputmode = "numeric";
  }
  mask += autoEscape(opts.suffix, opts);
  mask += "[-]";

  if (altMask) {
    mask = [altMask + autoEscape(opts.suffix, opts) + "[-]", mask];
  }

  opts.greedy = false; // enforce greedy false

  parseMinMaxOptions(opts);
  if (opts.radixPoint !== "" && opts.substituteRadixPoint)
    opts.substitutes[opts.radixPoint == "." ? "," : "."] = opts.radixPoint;
  // console.log(mask);
  return mask;
}

function hanndleRadixDance(pos, c, radixPos, maskset, opts) {
  if (opts._radixDance && opts.numericInput && c !== opts.negationSymbol.back) {
    if (
      pos <= radixPos &&
      (radixPos > 0 || c == opts.radixPoint) &&
      (maskset.validPositions[pos - 1] === undefined ||
        maskset.validPositions[pos - 1].input !== opts.negationSymbol.back)
    ) {
      pos -= 1;
    }
  }
  return pos;
}

function decimalValidator(chrs, maskset, pos, strict, opts) {
  const radixPos = maskset.buffer
      ? maskset.buffer.indexOf(opts.radixPoint)
      : -1,
    result =
      (radixPos !== -1 || (strict && opts.jitMasking)) &&
      new RegExp(opts.definitions["9"].validator).test(chrs);
  if (
    !strict &&
    opts._radixDance &&
    radixPos !== -1 &&
    result &&
    maskset.validPositions[radixPos] == undefined
  ) {
    return {
      insert: {
        pos: radixPos === pos ? radixPos + 1 : radixPos,
        c: opts.radixPoint
      },
      pos
    };
  }

  return result;
}

function checkForLeadingZeroes(buffer, opts) {
  // check leading zeros
  let numberMatches = new RegExp(
      "(^" +
        (opts.negationSymbol.front !== ""
          ? escapeRegex(opts.negationSymbol.front) + "?"
          : "") +
        escapeRegex(opts.prefix) +
        ")(.*)(" +
        escapeRegex(opts.suffix) +
        (opts.negationSymbol.back != ""
          ? escapeRegex(opts.negationSymbol.back) + "?"
          : "") +
        "$)"
    ).exec(buffer.slice().reverse().join("")),
    number = numberMatches ? numberMatches[2] : "",
    leadingzeroes = false;
  if (number) {
    number = number.split(opts.radixPoint.charAt(0))[0];
    leadingzeroes = new RegExp("^[0" + opts.groupSeparator + "]*").exec(number);
  }
  return leadingzeroes &&
    (leadingzeroes[0].length > 1 ||
      (leadingzeroes[0].length > 0 && leadingzeroes[0].length < number.length))
    ? leadingzeroes
    : false;
}

// number aliases
Inputmask.extendAliases({
  numeric: {
    mask: genMask,
    _mask: function (opts) {
      return "(" + opts.groupSeparator + "999){+|1}";
    },
    digits: "*", // number of fractionalDigits
    digitsOptional: true,
    enforceDigitsOnBlur: false,
    radixPoint: ".",
    positionCaretOnClick: "radixFocus",
    _radixDance: true,
    groupSeparator: "",
    allowMinus: true,
    negationSymbol: {
      front: "-", // "("
      back: "" // ")"
    },
    prefix: "",
    suffix: "",
    min: null, // minimum value
    max: null, // maximum value
    SetMaxOnOverflow: false,
    step: 1,
    inputType: "text", // number ~ specify that values which are set are in textform (radix point  is same as in the options) or in numberform (radixpoint = .)
    unmaskAsNumber: false,
    roundingFN: Math.round, // Math.floor ,  fn(x)
    inputmode: "decimal",
    shortcuts: { k: "1000", m: "1000000" },
    // global options
    placeholder: "0",
    greedy: false,
    rightAlign: true,
    insertMode: true,
    autoUnmask: false,
    skipOptionalPartCharacter: "",
    usePrototypeDefinitions: false,
    stripLeadingZeroes: true,
    substituteRadixPoint: true,
    definitions: {
      0: {
        validator: decimalValidator
      },
      1: {
        validator: decimalValidator,
        definitionSymbol: "9"
      },
      9: {
        // \uFF11-\uFF19 #1606
        validator: "[0-9\uFF10-\uFF19\u0660-\u0669\u06F0-\u06F9]",
        definitionSymbol: "*"
      },
      "+": {
        validator: function (chrs, maskset, pos, strict, opts) {
          return (
            opts.allowMinus &&
            (chrs === "-" || chrs === opts.negationSymbol.front)
          );
        }
      },
      "-": {
        validator: function (chrs, maskset, pos, strict, opts) {
          return opts.allowMinus && chrs === opts.negationSymbol.back;
        }
      }
    },
    preValidation: function (
      buffer,
      pos,
      c,
      isSelection,
      opts,
      maskset,
      caretPos,
      strict
    ) {
      const inputmask = this;

      if (opts.__financeInput !== false && c === opts.radixPoint) return false;
      const radixPos = buffer.indexOf(opts.radixPoint),
        initPos = pos;
      pos = hanndleRadixDance(pos, c, radixPos, maskset, opts);
      if (c === "-" || c === opts.negationSymbol.front) {
        if (opts.allowMinus !== true) return false;
        let isNegative = false,
          front = findValid("+", maskset),
          back = findValid("-", maskset);
        if (front !== -1) {
          isNegative = [front, back];
        }

        return isNegative !== false
          ? {
              remove: isNegative,
              caret: initPos - opts.negationSymbol.back.length
            }
          : {
              insert: [
                {
                  pos: findValidator.call(inputmask, "+", maskset),
                  c: opts.negationSymbol.front,
                  fromIsValid: true
                },
                {
                  pos: findValidator.call(inputmask, "-", maskset),
                  c: opts.negationSymbol.back,
                  fromIsValid: undefined
                }
              ],
              caret: initPos + opts.negationSymbol.back.length
            };
      }

      if (c === opts.groupSeparator) {
        return { caret: initPos };
      }

      if (strict) return true;
      if (
        radixPos !== -1 &&
        opts._radixDance === true &&
        isSelection === false &&
        c === opts.radixPoint &&
        opts.digits !== undefined &&
        (isNaN(opts.digits) || parseInt(opts.digits) > 0) &&
        radixPos !== pos
      ) {
        const radixValidatorPos = findValidator.call(
          inputmask,
          opts.radixPoint,
          maskset
        );
        if (maskset.validPositions[radixValidatorPos]) {
          maskset.validPositions[radixValidatorPos].generatedInput =
            maskset.validPositions[radixValidatorPos].generated || false;
        }
        return {
          caret:
            opts._radixDance && pos === radixPos - 1 ? radixPos + 1 : radixPos
        };
      }
      if (opts.__financeInput === false) {
        if (isSelection) {
          if (opts.digitsOptional) {
            return { rewritePosition: caretPos.end };
          } else if (!opts.digitsOptional) {
            if (caretPos.begin > radixPos && caretPos.end <= radixPos) {
              if (c === opts.radixPoint) {
                return {
                  insert: { pos: radixPos + 1, c: "0", fromIsValid: true },
                  rewritePosition: radixPos
                };
              } else {
                return { rewritePosition: radixPos + 1 };
              }
            } else if (caretPos.begin < radixPos) {
              return { rewritePosition: caretPos.begin - 1 };
            }
          }
        } else if (
          !opts.showMaskOnHover &&
          !opts.showMaskOnFocus &&
          !opts.digitsOptional &&
          opts.digits > 0 &&
          this.__valueGet.call(this.el) === ""
        ) {
          return { rewritePosition: radixPos };
        }
      }
      return { rewritePosition: pos };
    },
    postValidation: function (
      buffer,
      pos,
      c,
      currentResult,
      opts,
      maskset,
      strict
    ) {
      if (currentResult === false) return currentResult;
      if (strict) return true;
      if (opts.min !== null || opts.max !== null) {
        const unmasked = opts.onUnMask(
          buffer.slice().reverse().join(""),
          undefined,
          $.extend({}, opts, {
            unmaskAsNumber: true
          })
        );
        if (
          opts.min !== null &&
          unmasked < opts.min &&
          (unmasked.toString().length > opts.min.toString().length ||
            unmasked < 0)
        ) {
          return false;
          // return {
          // 	refreshFromBuffer: true,
          // 	buffer: alignDigits(opts.min.toString().replace(".", opts.radixPoint).split(""), opts.digits, opts).reverse()
          // };
        }

        if (opts.max !== null && unmasked > opts.max) {
          return opts.SetMaxOnOverflow
            ? {
                refreshFromBuffer: true,
                buffer: alignDigits(
                  opts.max.toString().replace(".", opts.radixPoint).split(""),
                  opts.digits,
                  opts
                ).reverse()
              }
            : false;
        }
      }

      return currentResult;
    },
    onUnMask: function (maskedValue, unmaskedValue, opts) {
      if (unmaskedValue === "" && opts.nullable === true) {
        return unmaskedValue;
      }
      let processValue = maskedValue.replace(opts.prefix, "");
      processValue = processValue.replace(opts.suffix, "");
      processValue = processValue.replace(
        new RegExp(escapeRegex(opts.groupSeparator), "g"),
        ""
      );
      if (opts.placeholder.charAt(0) !== "") {
        processValue = processValue.replace(
          new RegExp(opts.placeholder.charAt(0), "g"),
          "0"
        );
      }
      if (opts.unmaskAsNumber) {
        if (
          opts.radixPoint !== "" &&
          processValue.indexOf(opts.radixPoint) !== -1
        )
          processValue = processValue.replace(
            escapeRegex.call(this, opts.radixPoint),
            "."
          );
        processValue = processValue.replace(
          new RegExp("^" + escapeRegex(opts.negationSymbol.front)),
          "-"
        );
        processValue = processValue.replace(
          new RegExp(escapeRegex(opts.negationSymbol.back) + "$"),
          ""
        );
        return Number(processValue);
      }
      return processValue;
    },
    isComplete: function (buffer, opts) {
      let maskedValue = (
        opts.numericInput ? buffer.slice().reverse() : buffer
      ).join("");
      maskedValue = maskedValue.replace(
        new RegExp("^" + escapeRegex(opts.negationSymbol.front)),
        "-"
      );
      maskedValue = maskedValue.replace(
        new RegExp(escapeRegex(opts.negationSymbol.back) + "$"),
        ""
      );
      maskedValue = maskedValue.replace(opts.prefix, "");
      maskedValue = maskedValue.replace(opts.suffix, "");
      maskedValue = maskedValue.replace(
        new RegExp(escapeRegex(opts.groupSeparator) + "([0-9]{3})", "g"),
        "$1"
      );
      if (opts.radixPoint === ",")
        maskedValue = maskedValue.replace(escapeRegex(opts.radixPoint), ".");
      return isFinite(maskedValue);
    },
    onBeforeMask: function (initialValue, opts) {
      initialValue = initialValue ?? "";
      const radixPoint = opts.radixPoint || ",";
      if (isFinite(opts.digits)) opts.digits = parseInt(opts.digits);

      if (
        (typeof initialValue === "number" || opts.inputType === "number") &&
        radixPoint !== ""
      ) {
        initialValue = initialValue.toString().replace(".", radixPoint);
      }
      const isNegative =
          initialValue.charAt(0) === "-" ||
          initialValue.charAt(0) === opts.negationSymbol.front,
        valueParts = initialValue.split(radixPoint),
        integerPart = valueParts[0].replace(/[^\-0-9]/g, ""),
        decimalPart =
          valueParts.length > 1 ? valueParts[1].replace(/[^0-9]/g, "") : "",
        forceDigits = valueParts.length > 1;

      initialValue =
        integerPart +
        (decimalPart !== "" ? radixPoint + decimalPart : decimalPart);

      let digits = 0;
      if (radixPoint !== "") {
        digits = !opts.digitsOptional
          ? opts.digits
          : opts.digits < decimalPart.length
          ? opts.digits
          : decimalPart.length;
        if (decimalPart !== "" || !opts.digitsOptional) {
          const digitsFactor = Math.pow(10, digits || 1);

          // make the initialValue a valid javascript number for the parsefloat
          initialValue = initialValue.replace(escapeRegex(radixPoint), ".");
          if (!isNaN(parseFloat(initialValue))) {
            initialValue = (
              opts.roundingFN(parseFloat(initialValue) * digitsFactor) /
              digitsFactor
            ).toFixed(digits);
          }
          initialValue = initialValue.toString().replace(".", radixPoint);
        }
      }
      // this needs to be in a separate part and not directly in decimalPart to allow rounding
      if (opts.digits === 0 && initialValue.indexOf(radixPoint) !== -1) {
        initialValue = initialValue.substring(
          0,
          initialValue.indexOf(radixPoint)
        );
      }

      if (opts.min !== null || opts.max !== null) {
        const numberValue = initialValue.toString().replace(radixPoint, ".");
        if (opts.min !== null && numberValue < opts.min) {
          initialValue = opts.min.toString().replace(".", radixPoint);
        } else if (opts.max !== null && numberValue > opts.max) {
          initialValue = opts.max.toString().replace(".", radixPoint);
        }
      }

      if (isNegative && initialValue.charAt(0) !== "-") {
        initialValue = "-" + initialValue;
      }
      return alignDigits(
        initialValue.toString().split(""),
        digits,
        opts,
        forceDigits
      ).join("");
    },
    onBeforeWrite: function (e, buffer, caretPos, opts) {
      function stripBuffer(buffer, stripRadix) {
        if (opts.__financeInput !== false || stripRadix) {
          var position = buffer.indexOf(opts.radixPoint);
          if (position !== -1) {
            buffer.splice(position, 1);
          }
        }
        if (opts.groupSeparator !== "") {
          while ((position = buffer.indexOf(opts.groupSeparator)) !== -1) {
            buffer.splice(position, 1);
          }
        }

        return buffer;
      }

      let result, leadingzeroes;
      if (
        opts.stripLeadingZeroes &&
        (leadingzeroes = checkForLeadingZeroes(buffer, opts))
      ) {
        const caretNdx =
            buffer
              .join("")
              .lastIndexOf(leadingzeroes[0].split("").reverse().join("")) -
            (leadingzeroes[0] == leadingzeroes.input ? 0 : 1),
          offset = leadingzeroes[0] == leadingzeroes.input ? 1 : 0;
        for (let i = leadingzeroes[0].length - offset; i > 0; i--) {
          this.maskset.validPositions.splice(caretNdx + i, 1);
          delete buffer[caretNdx + i];
        }
      }

      if (e) {
        switch (e.type) {
          case "blur":
          case "checkval":
            if (opts.min !== null) {
              const unmasked = opts.onUnMask(
                buffer.slice().reverse().join(""),
                undefined,
                $.extend({}, opts, {
                  unmaskAsNumber: true
                })
              );
              if (opts.min !== null && unmasked < opts.min) {
                return {
                  refreshFromBuffer: true,
                  buffer: alignDigits(
                    opts.min.toString().replace(".", opts.radixPoint).split(""),
                    opts.digits,
                    opts
                  ).reverse()
                };
              }
            }
            if (buffer[buffer.length - 1] === opts.negationSymbol.front) {
              // strip negation symbol on blur when value is 0
              const nmbrMtchs = new RegExp(
                  "(^" +
                    (opts.negationSymbol.front != ""
                      ? escapeRegex(opts.negationSymbol.front) + "?"
                      : "") +
                    escapeRegex(opts.prefix) +
                    ")(.*)(" +
                    escapeRegex(opts.suffix) +
                    (opts.negationSymbol.back != ""
                      ? escapeRegex(opts.negationSymbol.back) + "?"
                      : "") +
                    "$)"
                ).exec(stripBuffer(buffer.slice(), true).reverse().join("")),
                number = nmbrMtchs ? nmbrMtchs[2] : "";
              if (number == 0) {
                result = { refreshFromBuffer: true, buffer: [0] };
              }
            } else if (opts.radixPoint !== "") {
              // strip radixpoint on blur when it is the latest char
              const radixNDX = buffer.indexOf(opts.radixPoint);
              if (radixNDX === opts.suffix.length) {
                if (result && result.buffer) {
                  result.buffer.splice(0, 1 + opts.suffix.length);
                } else {
                  buffer.splice(0, 1 + opts.suffix.length);
                  result = {
                    refreshFromBuffer: true,
                    buffer: stripBuffer(buffer)
                  };
                }
              }
            }

            if (opts.enforceDigitsOnBlur) {
              result = result || {};
              const bffr =
                (result && result.buffer) || buffer.slice().reverse();
              result.refreshFromBuffer = true;
              result.buffer = alignDigits(
                bffr,
                opts.digits,
                opts,
                true
              ).reverse();
            }
        }
      }

      return result;
    },
    onKeyDown: function (e, buffer, caretPos, opts) {
      let $input = $(this),
        bffr;
      if (e.location != 3) {
        let pattern,
          c = e.key;
        if ((pattern = opts.shortcuts && opts.shortcuts[c])) {
          if (pattern.length > 1) {
            this.inputmask.__valueSet.call(
              this,
              parseFloat(this.inputmask.unmaskedvalue()) * parseInt(pattern)
            );
            $input.trigger("setvalue");
            return false;
          }
        }
      }
      if (e.ctrlKey) {
        switch (e.key) {
          case keys.ArrowUp:
            this.inputmask.__valueSet.call(
              this,
              parseFloat(this.inputmask.unmaskedvalue()) + parseInt(opts.step)
            );
            $input.trigger("setvalue");
            return false;
          case keys.ArrowDown:
            this.inputmask.__valueSet.call(
              this,
              parseFloat(this.inputmask.unmaskedvalue()) - parseInt(opts.step)
            );
            $input.trigger("setvalue");
            return false;
        }
      }
      if (
        !e.shiftKey &&
        (e.key === keys.Delete ||
          e.key === keys.Backspace ||
          e.key === keys.BACKSPACE_SAFARI) &&
        caretPos.begin !== buffer.length
      ) {
        if (
          buffer[e.key === keys.Delete ? caretPos.begin - 1 : caretPos.end] ===
          opts.negationSymbol.front
        ) {
          bffr = buffer.slice().reverse();
          if (opts.negationSymbol.front !== "") bffr.shift();
          if (opts.negationSymbol.back !== "") bffr.pop();
          $input.trigger("setvalue", [bffr.join(""), caretPos.begin]);
          return false;
        } else if (opts._radixDance === true) {
          const radixPos = buffer.indexOf(opts.radixPoint);
          if (!opts.digitsOptional) {
            if (
              radixPos !== -1 &&
              (caretPos.begin < radixPos ||
                caretPos.end < radixPos ||
                (e.key === keys.Delete &&
                  (caretPos.begin === radixPos ||
                    caretPos.begin - 1 === radixPos)))
            ) {
              let restoreCaretPos;
              if (caretPos.begin === caretPos.end) {
                // only adjust when not a selection
                if (e.key === keys.Backspace || e.key === keys.BACKSPACE_SAFARI)
                  caretPos.begin++;
                else if (
                  e.key === keys.Delete &&
                  caretPos.begin - 1 === radixPos
                ) {
                  restoreCaretPos = $.extend({}, caretPos);
                  caretPos.begin--;
                  caretPos.end--;
                }
              }
              bffr = buffer.slice().reverse();
              bffr.splice(
                bffr.length - caretPos.begin,
                caretPos.begin - caretPos.end + 1
              );
              // console.log(caretPos);
              bffr = alignDigits(bffr, opts.digits, opts).join("");
              if (restoreCaretPos) {
                caretPos = restoreCaretPos;
              }
              $input.trigger("setvalue", [
                bffr,
                caretPos.begin >= bffr.length ? radixPos + 1 : caretPos.begin
              ]);
              return false;
            }
          } else if (radixPos === 0) {
            bffr = buffer.slice().reverse();
            bffr.pop();
            $input.trigger("setvalue", [
              bffr.join(""),
              caretPos.begin >= bffr.length ? bffr.length : caretPos.begin
            ]);
            return false;
          }
        }
      }
    }
  },
  currency: {
    prefix: "", // "$ ",
    groupSeparator: ",",
    alias: "numeric",
    digits: 2,
    digitsOptional: false
  },
  decimal: {
    alias: "numeric"
  },
  integer: {
    alias: "numeric",
    inputmode: "numeric",
    digits: 0
  },
  percentage: {
    alias: "numeric",
    min: 0,
    max: 100,
    suffix: " %",
    digits: 0,
    allowMinus: false
  },
  indianns: {
    // indian numbering system
    alias: "numeric",
    _mask: function (opts) {
      return (
        "(" +
        opts.groupSeparator +
        "99){*|1}(" +
        opts.groupSeparator +
        "999){1|1}"
      );
    },
    groupSeparator: ",",
    radixPoint: ".",
    placeholder: "0",
    digits: 2,
    digitsOptional: false
  }
});