src/ExternalPanel.java

@@ -0,0 +1,90 @@
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+
+/**
+ * ExternalPanel.java
+ * 
+ * Created on 13.08.2009
+ */
+
+
+/**
+ * The class ExternalPanel. A panel with which some other component can be shown in an external window.
+ * 
+ * @version V0.0 13.08.2009
+ * @author Clemens Koza
+ */
+public class ExternalPanel extends JPanel {
+
+	private static final long serialVersionUID = 9098962430872706173L;
+	private Component child, head;
+    private JFrame    frame;
+    
+    public ExternalPanel(Component child) {
+        this(child, BorderLayout.EAST);
+    }
+    
+    public ExternalPanel(Component child, String side) {
+        super(new BorderLayout());
+        add(this.child = child);
+        JButton b = new JButton();
+        b.setPreferredSize(new Dimension(6, 6));
+        b.setToolTipText("Click to move component into an extra Window");
+        b.addActionListener(new ExternListener());
+        head = b;
+        setHeadSide(side);
+    }
+    
+    public void setHeadSide(String side) {
+        remove(head);
+        add(head, side);
+    }
+    
+    @Override
+    protected void addImpl(Component comp, Object constraints, int index) {
+        if(comp != child && comp != head) throw new IllegalArgumentException();
+        super.addImpl(comp, constraints, index);
+    }
+    
+    private final class ExternListener extends WindowAdapter implements ActionListener {
+        private void bringOut() {
+            frame = new JFrame();
+            frame.addWindowListener(this);
+            frame.addWindowStateListener(this);
+            frame.add(child);
+            frame.getRootPane().setPreferredSize(child.getSize());
+            frame.pack();
+            frame.setVisible(true);
+            validate();
+            repaint();
+        }
+        
+        private void bringIn() {
+            add(child);
+            frame.dispose();
+            frame = null;
+            validate();
+            repaint();
+        }
+        
+        public void actionPerformed(ActionEvent e) {
+            if(frame == null) bringOut();
+            else bringIn();
+        }
+        
+        @Override
+        public void windowClosing(WindowEvent e) {
+            bringIn();
+        }
+    }
+}