PortNumberValidator class

PortNumberValidator extends TranslatedValidator to validate if a string represents a valid port number.

This validator checks if the port number is an integer within the specified range (0 to 65535 by default).

Parameters:

  • min The minimum allowable port number. Defaults to 0.
  • max The maximum allowable port number. Defaults to 65535.
  • errorText The error message returned if the validation fails.
  • checkNullOrEmpty Whether to check if the value is null or empty.
Inheritance

Constructors

PortNumberValidator({int min = 0, int max = 65535, String? errorText, bool checkNullOrEmpty = true})
Constructor for the port number validator.

Properties

checkNullOrEmpty → bool
Whether to check if the value is null or empty.
finalinherited
errorText → String
The error message returned if the value is invalid.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
max → int
The maximum allowable port number.
final
min → int
The minimum allowable port number.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
translatedErrorText → String
The translated error message returned if the value is invalid.
no setteroverride

Methods

isNullOrEmpty(String? valueCandidate) → bool
Checks if the value is null or empty. Returns true if the value is null or empty, otherwise false. The value is considered empty if it is a String, Iterable, or Map and it is empty or contains only whitespace characters. If the value is not a String, Iterable, or Map, it is considered empty if it is null.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited
validate(String? valueCandidate) → String?
Validates the value and checks if it is null or empty.
inherited
validateValue(String valueCandidate) → String?
Validates the value. Returns null if the value is valid, otherwise an error message. Call validate() instead of this method when using the validator.
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited