Validator

Kind of class: public class
Package:
Inherits from:
  • none
Classpath: org.asaplibrary.util.validation.Validator
File last modified: Friday, 13 May 2011, 22:20:36
Class for validation of user input values in UI components. UI components must implement IValidatable, and be added for validation through implementations of IValidationRule.
Example
  • In a form, suppose two objects of type InputField are defined: tName & tEmail. The class InputField implements Ivalidatable. Add the following code to allow validation on those objects. 
    mValidator = new Validator();
mValidator.addValidationRule(new EmptyStringValidationRule(tName));
mValidator.addValidationRule(new EmailValidationRule(tEmail));
    This code sets a validation rule on tName to check for an empty string, and on tEmail to check for a valid email address. To perform the actual validation, use this: var errors:Array = mValidator.validate(); If either of the validation rules returns false, it will be added to the list of errors. This list will have a length of 0 if no errors were found. Run through the list of errors to get the rule(s) that returned false. The UI component itself can then be accessed through the getTarget() function of IValidatable.

Summary

Instance methods

Instance methods

addValidationRule

function addValidationRule(inRule:IValidationRule) : void

Add a validation rule

clear

function clear() : void

Empty the list of validation rules

getTargets

function getTargets() : Array
Returns
  • all targets for validation, objects of type IValidatable

toString

function toString() : String

validate

function validate() : Array

Check validity of all added validation rules

Returns
  • a list of all validation rules that did not validate; objects of type IValidationRule