/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.as.quickstarts.numberguess;
import java.io.Serializable;
import javax.annotation.PostConstruct;
import javax.enterprise.context.SessionScoped;
import javax.enterprise.inject.Instance;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.inject.Inject;
import javax.inject.Named;
/**
* <p>
* {@link Game} contains all the business logic for the application, and also serves as the controller for the JSF view.
* </p>
* <p>
* It contains properties for the <code>number</code> to be guessed, the current <code>guess</code>, the <code>smallest</code>
* and <code>biggest</code> numbers guessed so far (as this is a higher/lower game we can prevent them entering numbers that
* they should know are wrong), and the number of <code>remainingGuesses</code>.
* </p>
* <p>
* The {@link #check()} method, and {@link #reset()} methods provide the business logic whilst the
* {@link #validateNumberRange(FacesContext, UIComponent, Object)} method provides feedback to the user.
* </p>
*
* @author Pete Muir
*
*/
@SuppressWarnings("serial")
@Named
@SessionScoped
public class Game implements Serializable {
/**
* The number that the user needs to guess
*/
private int number;
/**
* The users latest guess
*/
private int guess;
/**
* The smallest number guessed so far (so we can track the valid guess range).
*/
private int smallest;
/**
* The largest number guessed so far
*/
private int biggest;
/**
* The number of guesses remaining
*/
private int remainingGuesses;
/**
* The maximum number we should ask them to guess
*/
@Inject
@MaxNumber
private int maxNumber;
/**
* The random number to guess
*/
@Inject
@Random
Instance<Integer> randomNumber;
public Game() {
}
public int getNumber() {
return number;
}
public int getGuess() {
return guess;
}
public void setGuess(int guess) {
this.guess = guess;
}
public int getSmallest() {
return smallest;
}
public int getBiggest() {
return biggest;
}
public int getRemainingGuesses() {
return remainingGuesses;
}
/**
* Check whether the current guess is correct, and update the biggest/smallest guesses as needed. Give feedback to the user
* if they are correct.
*/
public void check() {
if (guess > number) {
biggest = guess - 1;
} else if (guess < number) {
smallest = guess + 1;
} else if (guess == number) {
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("Correct!"));
}
remainingGuesses--;
}
/**
* Reset the game, by putting all values back to their defaults, and getting a new random number. We also call this method
* when the user starts playing for the first time using {@linkplain PostConstruct @PostConstruct} to set the initial
* values.
*/
@PostConstruct
public void reset() {
this.smallest = 0;
this.guess = 0;
this.remainingGuesses = 10;
this.biggest = maxNumber;
this.number = randomNumber.get();
}
/**
* A JSF validation method which checks whether the guess is valid. It might not be valid because there are no guesses left,
* or because the guess is not in range.
*
*/
public void validateNumberRange(FacesContext context, UIComponent toValidate, Object value) {
if (remainingGuesses <= 0) {
FacesMessage message = new FacesMessage("No guesses left!");
context.addMessage(toValidate.getClientId(context), message);
((UIInput) toValidate).setValid(false);
return;
}
int input = (Integer) value;
if (input < smallest || input > biggest) {
((UIInput) toValidate).setValid(false);
FacesMessage message = new FacesMessage("Invalid guess");
context.addMessage(toValidate.getClientId(context), message);
}
}
}