Swing を MVC パターンで設計する流れの確認。

MainView.java

import static javax.swing.SpringLayout.*;

import java.awt.BorderLayout;
import java.awt.Dimension;

import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.Spring;
import javax.swing.SpringLayout;


public class MainView {
    public final JTable table = new JTable(0, 3);
    public final JScrollPane tableScroll = new JScrollPane(table);
    
    public final JLabel dateLabel = new JLabel("Date");
    public final JTextField dateField = new JTextField("2012-01-01");
    
    public final JLabel itemLabel = new JLabel("Item");
    public final JTextField itemField = new JTextField("Item");
    
    public final JLabel expenseLabel = new JLabel("Expense");
    public final JTextField expenseField = new JTextField("0");
    
    public final JPanel detailsPanel =
            craeteDetailsPanel(dateLabel, dateField, itemLabel, itemField, expenseLabel, expenseField);
    
    public final JPanel contentPane = createContentPane(detailsPanel, tableScroll);
    
    public JPanel getContentPane() {
        return contentPane;
    }
    
    JPanel craeteDetailsPanel(
            JLabel dateLabel, JTextField dateField, JLabel itemLabel, JTextField itemField,
            JLabel expenseLabel, JTextField expenseField) {
        SpringLayout layout = new SpringLayout();
        JPanel detailsPanel = new JPanel(layout);
        
        detailsPanel.add(dateLabel);
        layout.putConstraint(WEST, dateLabel, 0, WEST, detailsPanel);
        layout.putConstraint(NORTH, dateLabel, 0, NORTH, detailsPanel);
        
        detailsPanel.add(dateField);
        layout.putConstraint(WEST, dateField, 0, WEST, detailsPanel);
        layout.putConstraint(NORTH, dateField, 2, SOUTH, dateLabel);
        layout.getConstraints(dateField).setWidth(Spring.constant(120));
        
        detailsPanel.add(itemLabel);
        layout.putConstraint(WEST, itemLabel, 8, EAST, dateField);
        layout.putConstraint(BASELINE, itemLabel, 0, BASELINE, dateLabel);
        
        detailsPanel.add(itemField);
        layout.putConstraint(WEST, itemField, 8, EAST, dateField);
        layout.putConstraint(BASELINE, itemField, 0, BASELINE, dateField);
        
        detailsPanel.add(expenseLabel);
        layout.putConstraint(WEST, expenseLabel, 8, EAST, itemField);
        layout.putConstraint(BASELINE, expenseLabel, 0, BASELINE, dateLabel);
        
        detailsPanel.add(expenseField);
        layout.putConstraint(EAST, expenseField, 0, EAST, detailsPanel);
        layout.putConstraint(BASELINE, expenseField, 0, BASELINE, dateField);
        layout.putConstraint(EAST, itemField, -8, WEST, expenseField);
        
        layout.getConstraints(expenseField).setWidth(Spring.constant(120));
        
        layout.getConstraints(detailsPanel).setHeight(
                layout.getConstraint(SOUTH, expenseField));
        
        return detailsPanel;
    }
    
    JPanel createContentPane(JPanel detailsPanel, JScrollPane tablePane) {
        JPanel contentPane = new JPanel(new BorderLayout());
        contentPane.setPreferredSize(new Dimension(640, 480));
        
        detailsPanel.setBorder(BorderFactory.createEmptyBorder(6, 12, 6, 12));
        contentPane.add(detailsPanel, "South");
        contentPane.add(tablePane, "Center");
        
        return contentPane;
    }
}

MainViewTest.java

import java.awt.EventQueue;

import javax.swing.JFrame;


public class MainViewTest {
    public static void main(String[] args) {
        
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame("MainViewTest");
                
                MainView mainView = new MainView();
                frame.setContentPane(mainView.getContentPane());
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }
}

SwingMVCTest.java

import java.awt.EventQueue;

import javax.swing.JFrame;

public class SwingMVCTest {
    public void launch() {
        JFrame frame = createMainFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    JFrame createMainFrame() {
        JFrame frame = new JFrame("Swing MVC Test");
        
        MainView mainView = new MainView();
        frame.setContentPane(mainView.getContentPane());
        
        return frame;
    }
    
    public static void main(String[] args) {
        final SwingMVCTest test = new SwingMVCTest();
        
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                test.launch();
            }
        });
    }
}