UsernamePatternValidator.java

package fr.openwide.core.basicapp.web.application.common.validator;

import java.util.Collections;
import java.util.regex.Pattern;

import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.IValidationError;
import org.apache.wicket.validation.ValidationError;
import org.apache.wicket.validation.validator.PatternValidator;

public class UsernamePatternValidator extends PatternValidator {

	private static final long serialVersionUID = 1303632566302541081L;
	
	private static final String REGEX = "[A-Za-z0-9\\-\\_@.]+";
	
	private static final Pattern PATTERN = Pattern.compile(REGEX);
	
	private static final UsernamePatternValidator INSTANCE = new UsernamePatternValidator();
	
	public UsernamePatternValidator() {
		super(PATTERN);
	}

	@Override
	protected IValidationError decorate(IValidationError error, IValidatable<String> validatable) {
		super.decorate(error, validatable);
		
		((ValidationError) error).setKeys(Collections.singletonList("common.validator.username.pattern"));
		return error;
	}
	
	public static UsernamePatternValidator get() {
		return INSTANCE;
	}
}