Refactored to follow windows architecture.

ComposeWindow.java

@@ -0,0 +1,28 @@
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+class
+ComposeWindow extends JFrame {
+
+    private ComposeComponent
+    display;
+
+//  ---%-@-%---
+
+//  ---%-@-%---
+
+    ComposeWindow()
+    {
+        display = new ComposeComponent();
+        setContentPane(display);
+    }
+
+}
+
+
+
+class
+ComposeComponent extends JPanel {
+
+}

JKomasto.java

@@ -1,35 +1,59 @@
 
 import javax.swing.JFrame;
 import javax.swing.JPanel;
+import javax.swing.JComponent;
 import java.awt.Dimension;
-import java.awt.GridLayout;
+import java.awt.BorderLayout;
 
 class
-JKomasto extends JPanel {
+JKomasto {
+
+    public void
+    openTimelineWindow() {
+
+    }
+
+    public void
+    openPostWindow() {
+
+    }
+
+    public void
+    openComposeWindow() {
+
+    }
+
+//  ---%-@-%---
 
     public static void
     main(String... args)
     {
-        JFrame mainframe = new JFrame("JKomasto");
-        mainframe.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
-        mainframe.setLocationByPlatform(true);
-
         JKomasto instance = new JKomasto();
-        mainframe.add(instance);
-        mainframe.pack();
-
-        mainframe.setVisible(true);
-        new PostWindow().setVisible(true);
     }
 
 //  ---%-@-%---
 
     JKomasto()
     {
-        setPreferredSize(new Dimension(360, 270));
 
-        setLayout(new GridLayout());
-        add(new PreviewComponent());
+    }
+
+//   -  -%-  -
+
+    private static void
+    test(JComponent component, int width, int height)
+    {
+        JFrame frame = new JFrame();
+        frame.setTitle(component.getClass().getName());
+        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+        frame.setLocationByPlatform(true);
+
+        JPanel panel = new JPanel();
+        panel.setPreferredSize(new Dimension(width, height));
+        panel.add(component);
+        frame.setContentPane(panel);
+
+        frame.setVisible(true);
     }
 
 }

PostComponent.java

@@ -1,55 +0,0 @@
-
-import javax.swing.JPanel;
-import java.awt.Graphics;
-
-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 = 24;
-
-        g.drawString(author, 0, lineHeight);
-
-        g.drawString(text, 0, 2 * lineHeight);
-    }
-
-//  ---%-@-%---
-
-    PostComponent()
-    {
-        author = "Author";
-        time = "Time";
-        text = "This is a soft post..";
-    }
-
-}

PostWindow.java

@@ -1,8 +1,18 @@
 
 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 {
@@ -38,3 +48,120 @@ PostWindow extends JFrame {
     }
 
 }
+
+
+
+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 = 24;
+
+        g.drawString(author, 0, lineHeight);
+
+        g.drawString(text, 0, 2 * lineHeight);
+    }
+
+//  ---%-@-%---
+
+    PostComponent()
+    {
+        author = "Author";
+        time = "Time";
+        text = "This is a soft post..";
+    }
+
+}
+
+
+
+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(pageLabel);
+        bottom.add(nextPage);
+
+        JPanel centre = new JPanel();
+        centre.setLayout(new GridLayout(0, 1, 0, 2));
+        for (int n = 8; n > 0; --n) {
+            String label = "Eggplant -%- A short reply..";
+            JButton reply = new JButton(label);
+            // We likely need a custom class..
+            centre.add(reply);
+        }
+
+        setLayout(new BorderLayout(4, 4));
+        add(centre, BorderLayout.CENTER);
+        add(bottom, BorderLayout.SOUTH);
+
+        setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
+    }
+
+}

RepliesComponent.java

@@ -1,71 +0,0 @@
-
-import javax.swing.JPanel;
-import javax.swing.JButton;
-import javax.swing.JLabel;
-import javax.swing.Box;
-import javax.swing.BorderFactory;
-import java.awt.BorderLayout;
-import java.awt.GridLayout;
-import java.util.List;
-import java.util.ArrayList;
-
-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(pageLabel);
-        bottom.add(nextPage);
-
-        JPanel centre = new JPanel();
-        centre.setLayout(new GridLayout(0, 1, 0, 2));
-        for (int n = 8; n > 0; --n) {
-            String label = "Eggplant -%- A short reply..";
-            JButton reply = new JButton(label);
-            // We likely need a custom class..
-            centre.add(reply);
-        }
-
-        setLayout(new BorderLayout(4, 4));
-        add(centre, BorderLayout.CENTER);
-        add(bottom, BorderLayout.SOUTH);
-
-        setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
-    }
-
-}

TimelineWindow.java

@@ -1,10 +1,44 @@
 
+import javax.swing.JFrame;
+import javax.swing.JPanel;
 import javax.swing.JComponent;
 import javax.swing.JLabel;
 import javax.swing.Box;
 import java.awt.BorderLayout;
 import java.awt.Font;
 
+class
+TimelineWindow extends JFrame {
+
+    private TimelineComponent
+    display;
+
+//  ---%-@-%---
+
+//  ---%-@-%---
+
+    TimelineWindow()
+    {
+        setContentPane(display);
+    }
+
+}
+
+
+
+class
+TimelineComponent extends JPanel {
+
+    TimelineComponent()
+    {
+        setLayout(new BorderLayout());
+        add(new PreviewComponent());
+    }
+
+}
+
+
+
 class
 PreviewComponent extends JComponent {