Make the main window a singleton to permit to query it from other views and update...

[Persons_Comparator.git] / src / MainWindowsView.java

import javax.swing.*;
import javax.swing.text.DefaultEditorKit;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.util.ArrayList;

public class MainWindowsView extends JFrame {
    private static MainWindowsView ourInstance = new MainWindowsView();
    private PersonView currentPersonView;

    private MainWindowsView() {
    }

    public void setMainWindowsView(String title, PersonView personView) {
        this.currentPersonView = personView;
        Container panel = getContentPane();
        //Create and set up the window.
        setTitle(title);
        setSize(getCurrentPersonView().getDimension());
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Create menu
        JMenuBar menuBar = createMenuBar();
        setJMenuBar(menuBar);

        //Get all Swing/AWT JPanel in the views and add them to the main panel.
        ArrayList<Component> components = new ArrayList<>();
        for (int i = 0; i < panel.getComponentCount(); i++) {
            components.add(panel.getComponent(i));
        }
        for (Component component : components) {
            panel.add(component);
        }

        panel.add(getCurrentPersonView().getNorthPanel(), BorderLayout.NORTH);
        panel.add(getCurrentPersonView().getSouthPanel(), BorderLayout.SOUTH);
        panel.add(getCurrentPersonView().getEastPanel(), BorderLayout.EAST);
        panel.add(getCurrentPersonView().getWestPanel(), BorderLayout.WEST);
        panel.add(getCurrentPersonView().getPersonPanel(), BorderLayout.CENTER);
    }

    public static MainWindowsView getInstance() {
        return ourInstance;
    }

    public PersonView getCurrentPersonView() {
        return currentPersonView;
    }

    /**
     * Create menu that support cut/copy/paste.
     */
    private JMenuBar createMenuBar() {
        JMenuItem menuItem;
        JMenuBar menuBar = new JMenuBar();

        JMenu fileMenu = new JMenu("File");

        menuItem = new JMenuItem("Exit");
        menuItem.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });
        fileMenu.add(menuItem);

        JMenu editMenu = new JMenu("Edit");
        editMenu.setMnemonic(KeyEvent.VK_E);

        menuItem = new JMenuItem(new DefaultEditorKit.CutAction());
        menuItem.setText("Cut");
        menuItem.setMnemonic(KeyEvent.VK_T);
        editMenu.add(menuItem);

        menuItem = new JMenuItem(new DefaultEditorKit.CopyAction());
        menuItem.setText("Copy");
        menuItem.setMnemonic(KeyEvent.VK_C);
        editMenu.add(menuItem);

        menuItem = new JMenuItem(new DefaultEditorKit.PasteAction());
        menuItem.setText("Paste");
        menuItem.setMnemonic(KeyEvent.VK_P);
        editMenu.add(menuItem);

        menuBar.add(fileMenu);
        menuBar.add(editMenu);
        return menuBar;
    }

    /**
     * Show the GUI. For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    public void showGUI() {
        System.out.println("Created GUI on EDT? " +
                SwingUtilities.isEventDispatchThread());
        //Display the window.
        this.pack();
        this.setVisible(true);
    }
}