biskuteri-cafe-JKomasto2/PostWindow.java

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.Box;
import javax.swing.BorderFactory;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.util.List;
import java.util.ArrayList;

class
PostWindow extends JFrame {

    private Post
    post;

//   -  -%-  -

    private PostComponent
    postDisplay;

    private RepliesComponent
    repliesDisplay;

//  ---%-@-%---

    PostWindow()
    {
        getContentPane().setPreferredSize(new Dimension(360, 270));
        pack();
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        setLocationByPlatform(true);

        postDisplay = new PostComponent();
        postDisplay.setAuthor("杉原宇砂鷲");
        postDisplay.setTime("いつ");
        //postDisplay.setText("これはふさわしいですね。");
        postDisplay.setText(
            "While it is true that a formal science process is "
            + "not involved (recall that not just scientists, "
            + "but also psychologists, etc. follow it), "
            + "individuals' solutions can be trusted to be "
            + "the most focused on their unique needs. "
            + "If successful, the individual's solution can "
            + "be a formidable alternative to employing "
            + "assistance by professionals. Purportedly."
        );
        // (Don't take that seriously, I just wrote down
        // random topical text)

        repliesDisplay = new RepliesComponent();

        JMenu postMenu = new JMenu("Post");
        postMenu.add("Favourite");
        postMenu.add("Reply");
        JMenu displayMenu = new JMenu("Display");
        displayMenu.add("Post");
        displayMenu.add("Replies");
        JMenuBar menuBar = new JMenuBar();
        menuBar.add(postMenu);
        menuBar.add(displayMenu);
        setJMenuBar(menuBar);

        //setContentPane(postDisplay);
        setContentPane(repliesDisplay);
    }

}



class
PostComponent extends JPanel {

    private String
    author, time, text;

//  ---%-@-%---

    public void
    setAuthor(String author)
    {
        assert author != null;
        this.author = author;
    }

    public void
    setTime(String time)
    {
        assert time != null;
        this.time = time;
    }

    public void
    setText(String text)
    {
        assert text != null;
        this.text = text;
    }

//   -  -%-  -

    protected void
    paintComponent(Graphics g)
    {
        int lineHeight = 20;
        g.drawString(author, 0, lineHeight);

        int y = lineHeight;
        for (String line: split(text, 48)) {
            y += lineHeight;
            g.drawString(line, 0, y);
        }
    }

    private List<String>
    split(String string, int lineLength)
    {
        List<String> returnee = new ArrayList<>();

        int start, max = string.length();
        for (start = 0; start < max; start += lineLength) {
            returnee.add(string.substring(
                start,
                Math.min(max, start + lineLength)
            ));
        }

        return returnee;
    }

//  ---%-@-%---

    PostComponent()
    {
        author = time = text = "";

        setFont(getFont().deriveFont(14f));
    }

}



class
RepliesComponent extends JPanel {

    private List<String>
    authors, texts;

    private JButton
    prevPage, nextPage;

    private JLabel
    pageLabel;

//  ---%-@-%---

    public void
    setReplies(List<String> authors, List<String> texts)
    {
        this.authors.clear();
        this.authors.addAll(authors);
        this.texts.clear();
        this.texts.addAll(texts);
    }

//  ---%-@-%---

    RepliesComponent()
    {
        authors = new ArrayList<>();
        texts = new ArrayList<>();

        prevPage = new JButton("<");
        nextPage = new JButton(">");
        prevPage.setEnabled(false);
        nextPage.setEnabled(false);

        pageLabel = new JLabel("0 / 0");

        Box bottom = Box.createHorizontalBox();
        bottom.add(Box.createGlue());
        bottom.add(prevPage);
        bottom.add(Box.createHorizontalStrut(8));
        bottom.add(pageLabel);
        bottom.add(Box.createHorizontalStrut(8));
        bottom.add(nextPage);

        JPanel centre = new JPanel();
        centre.setOpaque(false);
        centre.setLayout(new GridLayout(0, 1, 0, 2));
        for (int n = 8; n > 0; --n) {
            ReplyPreviewComponent reply = new ReplyPreviewComponent();
            reply.setAuthor("Eggplant");
            reply.setText("bobofish..");
            centre.add(reply);
        }

        setLayout(new BorderLayout(0, 8));
        add(centre, BorderLayout.CENTER);
        add(bottom, BorderLayout.SOUTH);

        setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
    }

}



class
ReplyPreviewComponent extends JButton {

    private String
    author;

    private String
    text;

//  ---%-@-%---

    @Override
    public void
    setText(String text)
    {
        assert text != null;
        this.text = text;
        setText();
    }

    public void
    setAuthor(String author)
    {
        assert author != null;
        this.author = author;
        setText();
    }

//   -  -%-  -

    private void
    setText()
    {
        StringBuilder text = new StringBuilder();
        text.append(this.author);
        text.append(" @ ");
        text.append(this.text);
        super.setText(text.toString());
    }

    protected void
    paintComponent(Graphics g)
    {
        g.drawString(getText(), 8, 2 * getHeight() / 3);
    }

//  ---%-@-%---

    ReplyPreviewComponent() { }

}