Using explicit JavaImporter constructor to make namespace for swing and using it later with the "with" statement to get access to Java classes.

In this way the example can be used in an application that does not use ImporterTopLevel.

js/rhino/examples/SwingApplication.js

@@ -5,66 +5,73 @@
  * @author Roger E Critchlow, Jr.
  */
 
-importPackage(Packages.javax.swing);
-importPackage(Packages.java.awt);
-importPackage(Packages.java.awt.event);
+var swingNames = JavaImporter();
 
-function createComponents() {
-    var labelPrefix = "Number of button clicks: ";
-    var numClicks = 0;
-    var label = new JLabel(labelPrefix + numClicks);
-    var button = new JButton("I'm a Swing button!");
-    button.mnemonic = KeyEvent.VK_I;
-    // Since Rhino 1.5R5 JS functions can be passed to Java method if
-    // corresponding argument type is Java interface with single method
-    // or all its methods have the same number of arguments and the
-    // corresponding arguments has the same type. See also comments for
-    // frame.addWindowListener bellow
-    button.addActionListener(function() {
-	numClicks += 1;
-	label.setText(labelPrefix + numClicks);
-    });
-    label.setLabelFor(button);
+swingNames.importPackage(Packages.javax.swing);
+swingNames.importPackage(Packages.java.awt);
+swingNames.importPackage(Packages.java.awt.event);
 
-    /*
-     * An easy way to put space between a top-level container
-     * and its contents is to put the contents in a JPanel
-     * that has an "empty" border.
-     */
-    var pane = new JPanel();
-    pane.border = BorderFactory.createEmptyBorder(30, //top
-                                                  30, //left
-                                                  10, //bottom
-                                                  30); //right
-    pane.setLayout(new GridLayout(0, 1));
-    pane.add(button);
-    pane.add(label);
+function createComponents() 
+{
+    with (swingNames) {
+        var labelPrefix = "Number of button clicks: ";
+        var numClicks = 0;
+        var label = new JLabel(labelPrefix + numClicks);
+        var button = new JButton("I'm a Swing button!");
+        button.mnemonic = KeyEvent.VK_I;
+        // Since Rhino 1.5R5 JS functions can be passed to Java method if
+        // corresponding argument type is Java interface with single method
+        // or all its methods have the same number of arguments and the
+        // corresponding arguments has the same type. See also comments for
+        // frame.addWindowListener bellow
+        button.addActionListener(function() {
+            numClicks += 1;
+            label.setText(labelPrefix + numClicks);
+        });
+        label.setLabelFor(button);
 
-    return pane;
+        /*
+         * An easy way to put space between a top-level container
+         * and its contents is to put the contents in a JPanel
+         * that has an "empty" border.
+         */
+        var pane = new JPanel();
+        pane.border = BorderFactory.createEmptyBorder(30, //top
+                                                      30, //left
+                                                      10, //bottom
+                                                      30); //right
+        pane.setLayout(new GridLayout(0, 1));
+        pane.add(button);
+        pane.add(label);
+
+        return pane;
+    }
 }
 
-try {
-    UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
-} catch (e) { }
+with (swingNames) {
+    try {
+	UIManager.
+            setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
+    } catch (e) { }
 
-//Create the top-level container and add contents to it.
-var frame = new JFrame("SwingApplication");
-frame.getContentPane().add(createComponents(), BorderLayout.CENTER);
+    //Create the top-level container and add contents to it.
+    var frame = new swingNames.JFrame("SwingApplication");
+    frame.getContentPane().add(createComponents(), BorderLayout.CENTER);
 
-// Pass JS function as implementation of WindowListener. It is allowed since 
-// all methods in WindowListener have the same signature. To distinguish 
-// between methods Rhino passes to JS function the name of corresponding 
-// method as the last argument  
-frame.addWindowListener(function(event, methodName) {
-print(event + " "+methodName);
-    if (methodName == "windowClosing") {     
-        java.lang.System.exit(0);
-    }
-});
+    // Pass JS function as implementation of WindowListener. It is allowed since 
+    // all methods in WindowListener have the same signature. To distinguish 
+    // between methods Rhino passes to JS function the name of corresponding 
+    // method as the last argument  
+    frame.addWindowListener(function(event, methodName) {
+	if (methodName == "windowClosing") {     
+            java.lang.System.exit(0);
+	}
+    });
 
-//Finish setting up the frame, and show it.
-frame.pack();
-frame.setVisible(true);
+    //Finish setting up the frame, and show it.
+    frame.pack();
+    frame.setVisible(true);
+}