Method _processCharacterDeletion

src/AutoNumeric.js:9127–9163

* Process the deletion of characters. * Returns `true` if the deletion is allowed (within the min and max range, according to the `overrideMinMaxLimits` option), `false` otherwise. * * @param {Event} e * @returns {boolean}

(e)

     * @returns {boolean}
     */
    _processCharacterDeletion(e) {
        let left;
        let right;

        if (!this.selection.length) {
            [left, right] = this._getUnformattedLeftAndRightPartAroundTheSelection();
            if (left === '' && right === '') {
                this.throwInput = false;
            }

            if (this.isTrailingNegative && AutoNumericHelper.isNegative(AutoNumericHelper.getElementValue(this.domElement), this.settings.negativeSignCharacter)) {
                [left, right] = this._processCharacterDeletionIfTrailingNegativeSign([left, right]);
            } else {
                if (this.eventKey === AutoNumericEnum.keyName.Backspace) {
                    left = left.substring(0, left.length - 1);
                } else {
                    right = right.substring(1, right.length);
                }
            }
        } else {
            this._expandSelectionOnSign();
            [left, right] = this._getUnformattedLeftAndRightPartAroundTheSelection();
        }

        if (!this.constructor._isWithinRangeWithOverrideOption(`${left}${right}`, this.settings)) {
            // If the result with the deletion would be out of the range, we prevent it
            return false;
        }
        if (AutoNumericHelper.getElementValue(e.target) === this.settings.currencySymbol) {
            return false;
        }

        this._setValueParts(left, right);

        this.throwInput = true;  // fix #582: this.throwInput can be false (e.g.: by putting an invalid character previously) and we must enable this flag to ensure that input event is sent and double character is not removed, see also _onKeydown
        return true;
    }

    /**
     * Return `true` if a decimal character is allowed to be typed.