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Copy pathMenu.java
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187 lines (120 loc) · 4.29 KB
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/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package menumaker;
import java.util.ArrayList;
/**
* This class displays a Menu of your choice.
* You need to add the options that the menu will have.
*
* @author leandroestevez
*/
public class Menu {
private final ArrayList<String> options;
private int optionCounter;
/**
* Default constructor that will give a default value to 4 options.
*/
public Menu() {
options = new ArrayList<>();
options.add("1) Add an option");
options.add("2) Add an option");
options.add("3) Add an option");
optionCounter = 0;
}
/**
* Adds an option to the bottom of the menu.
* @param option a string representing the option added to the menu.
*/
public void addOption(String option) {
if(optionCounter == 0) {
options.clear();
}
options.add(option);
optionCounter++;
}
/**
* Adds an option to a specific position.
* @param option a string representing the option added to the menu.
* @param index position of the new option.
*/
public void addOption(String option, int index) throws IllegalArgumentException {
if(index <= 0 || index > options.size()) {
throw new IllegalArgumentException("invalid index");
} else {
if(optionCounter == 0) {
options.clear();
}
options.add(index - 1, option);
optionCounter++;
}
}
/**
* Adds options to the menu.
* @param optionsArr a string representing the option added to the menu.
*/
public void addArrOptions(String[] optionsArr) {
if(optionCounter == 0) {
options.clear();
}
for (String optionsArr1 : optionsArr) {
options.add(optionsArr1);
optionCounter++;
}
}
/**
* Deletes an option of the menu.
* @param index position of the option to be deleted
*/
public void deleteOption(int index) throws IllegalArgumentException {
if(index <= 0 || index > options.size()) {
throw new IllegalArgumentException("invalid index");
} else if(optionCounter == 0) {
System.out.println("Menu is empty");
} else {
options.remove(index - 1);
optionCounter--;
if(optionCounter == 0) {
options.add("1) Add an option");
options.add("2) Add an option");
options.add("3) Add an option");
}
}
}
/**
* Deletes last option added of the menu.
*/
public void deleteOption() {
if(optionCounter == 0) {
System.out.println("Menu is empty");
} else {
options.remove(options.size() - 1);
optionCounter--;
if(optionCounter == 0) {
options.add("1) Add an option");
options.add("2) Add an option");
options.add("3) Add an option");
}
}
}
/**
* Deletes all options of the menu.
*/
public void clearMenu() {
options.clear();
options.add("1) Add an option");
options.add("2) Add an option");
options.add("3) Add an option");
optionCounter = 0;
}
/**
* Displays the menu with the present options.
*/
public void displayMenu() {
for(int i = 0; i < options.size(); i++) {
System.out.println((i + 1) + ") " + options.get(i));
}
}
}