ch.bfh.ti.soed.hs16.srs.purple.controller.ValidationController.java Source code

Introduction

Here is the source code for ch.bfh.ti.soed.hs16.srs.purple.controller.ValidationController.java

Source

/*
 * Copyright (c) 2016 Berner Fachhochschule, Switzerland.
 *
 * Project Smart Reservation System.
 *
 * Distributable under GPL license. See terms of license at gnu.org.
 */
package ch.bfh.ti.soed.hs16.srs.purple.controller;

import java.util.List;

import com.vaadin.data.Validator;
import com.vaadin.data.Validator.InvalidValueException;
import com.vaadin.data.validator.EmailValidator;
import com.vaadin.ui.PasswordField;
import com.vaadin.ui.TextField;

import ch.bfh.ti.soed.hs16.srs.purple.controller.DBController.Table_User;
import ch.bfh.ti.soed.hs16.srs.purple.model.User;

public class ValidationController {

    /**
     * Function checks if the value of a textfield is empty or not.
     *
     * @param textfield - The textfield to be checked.
     */
    public static void setTextFieldRequired(TextField textfield) {
        textfield.setRequired(true);
        textfield.setRequiredError("Das Feld '" + textfield.getCaption() + "' darf nicht leer sein!");
    }

    /**
     * Function checks if the value of a passwordfield is empty or not.
     *
     * @param passwordField - The passwordfield to be checked
     */
    public static void setPasswordFielRequired(PasswordField passwordField) {
        passwordField.setRequired(true);
        passwordField.setRequiredError("Das Feld '" + passwordField.getCaption() + "' darf nicht leer sein!");
    }

    /**
     * Function checks if the value of the textfield is an email address
     *
     * @param textfield - The textfield to be checked
     */
    public static void checkIfEmail(TextField textfield) {
        textfield.addValidator(new EmailValidator("Ungltige E-Mail Adresse"));
    }

    /**
     * Function checks if the password is equal with the replied password.
     *
     * @param passwordField - The passwordfield to be checked
     * @param repliedPasswordField - The replied password
     */
    public static void checkIfPasswordIsEqualWithRepliedPassword(PasswordField passwordField,
            PasswordField repliedPasswordField) throws InvalidValueException {

        repliedPasswordField.addValidator(new Validator() {

            @Override
            public void validate(Object value) throws InvalidValueException {
                if (!value.equals(passwordField.getValue())) {
                    throw new InvalidValueException("Passwort stimmt nicht berein!");
                }
            }
        });
    }

    /**
     * Function checks in the database if the username is already used.
     *
     * @param username - The "username"-textfield
     * @param dbController - Instance of DBController
     */
    public static void checkIfUserAlredyExist(TextField username, DBController dbController)
            throws InvalidValueException {
        username.addValidator(new Validator() {

            @Override
            public void validate(Object value) throws InvalidValueException {
                List<User> users = dbController.selectUserBy(Table_User.COLUMN_USERNAME, username.getValue());

                if (users.size() > 0) {
                    throw new InvalidValueException("Username ist bereits vergeben!");
                }
            }
        });
    }
}