Separate Actions from Components

[1chooo]

uml-editor/src/Components/MenuBar.java

Line 39 in dfbd793

addActionListener(new MenuItemAction());

Currently, we need to use 'if' statements to perform Actions. In the future, we should be able to separate Actions from Components, and also provide enum Actions for direct use, similar to the concept of STATUS_CODE.

Current Action Class:

package src.Actions;

import javax.swing.*;
import java.awt.event.*;
import src.Utils.StatusCode;

public class MenuItemAction extends JMenu implements ActionListener {
    public MenuItemAction() { }

    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("About XML Editor")) {
            aboutAction(e);
        } else if (e.getActionCommand().equals("Quit (Control + Q)")) {
            exitAction(e);
        }
    }

    private void aboutAction(ActionEvent e) {
        String message = "Hello World! This is a simple XML Editor.";
        JOptionPane.showMessageDialog(null, message);
    }

    private void exitAction(ActionEvent e) {
        System.exit(StatusCode.EXIT);
    }
}