Custom MacOSX Frame with specific Menu

git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@348 3d1905a2-6b24-0410-a738-b14d5a86fcbd

src/java/davmail/tray/DavGatewayTray.java

@@ -1,6 +1,7 @@
 package davmail.tray;
 
 import davmail.Settings;
+import davmail.ui.OSXFrameGatewayTray;
 import davmail.exchange.NetworkDownException;
 import org.apache.log4j.Logger;
 import org.apache.log4j.Priority;
@@ -140,7 +141,12 @@ public class DavGatewayTray {
                 }
             }
             if (davGatewayTray == null) {
+                if (System.getProperty("os.name").toLowerCase().startsWith("mac os x")) {
+                    // MacOS
+                    davGatewayTray = new OSXFrameGatewayTray();
+                } else {
                     davGatewayTray = new FrameGatewayTray();
+                }
                 davGatewayTray.init();
             }
         }

src/java/davmail/tray/FrameGatewayTray.java

@@ -21,7 +21,9 @@ public class FrameGatewayTray implements DavGatewayTrayInterface {
     protected FrameGatewayTray() {
     }
 
-    private static JFrame mainFrame = null;
+    protected static JFrame mainFrame = null;
+    protected static AboutFrame aboutFrame;
+    protected static SettingsFrame settingsFrame;
     private static JEditorPane errorArea = null;
     private static JLabel errorLabel = null;
     private static JEditorPane messageArea = null;
@@ -89,6 +91,39 @@ public class FrameGatewayTray implements DavGatewayTrayInterface {
         });
     }
 
+    public void about() {
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                aboutFrame.update();
+                aboutFrame.setVisible(true);
+            }
+        });
+    }
+
+    public void preferences() {
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                settingsFrame.reload();
+                settingsFrame.setVisible(true);
+            }
+        });
+    }
+
+    public void showLogs() {
+        Logger rootLogger = Logger.getRootLogger();
+        LF5Appender lf5Appender = (LF5Appender) rootLogger.getAppender("LF5Appender");
+        if (lf5Appender == null) {
+            lf5Appender = new LF5Appender(new LogBrokerMonitor(LogLevel.getLog4JLevels()) {
+                protected void closeAfterConfirm() {
+                    hide();
+                }
+            });
+            lf5Appender.setName("LF5Appender");
+            rootLogger.addAppender(lf5Appender);
+        }
+        lf5Appender.getLogBrokerMonitor().show();
+    }
+
     public void init() {
         SwingUtilities.invokeLater(new Runnable() {
             public void run() {
@@ -97,6 +132,56 @@ public class FrameGatewayTray implements DavGatewayTrayInterface {
         });
     }
 
+    protected void buildMenu() {
+        // create a popup menu
+        JMenu menu = new JMenu("DavMail");
+        JMenuBar menuBar = new JMenuBar();
+        menuBar.add(menu);
+        mainFrame.setJMenuBar(menuBar);
+
+        // create an action settingsListener to listen for settings action executed on the tray icon
+        ActionListener aboutListener = new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                about();
+            }
+        };
+        // create menu item for the default action
+        JMenuItem aboutItem = new JMenuItem("About...");
+        aboutItem.addActionListener(aboutListener);
+        menu.add(aboutItem);
+
+
+        // create an action settingsListener to listen for settings action executed on the tray icon
+        ActionListener settingsListener = new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                preferences();
+            }
+        };
+        // create menu item for the default action
+        JMenuItem defaultItem = new JMenuItem("Settings...");
+        defaultItem.addActionListener(settingsListener);
+        menu.add(defaultItem);
+
+        JMenuItem logItem = new JMenuItem("Show logs...");
+        logItem.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                showLogs();
+            }
+        });
+        menu.add(logItem);
+
+        // create an action exitListener to listen for exit action executed on the tray icon
+        ActionListener exitListener = new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                //noinspection CallToSystemExit
+                System.exit(0);
+            }
+        };
+        // create menu item for the exit action
+        JMenuItem exitItem = new JMenuItem("Quit");
+        exitItem.addActionListener(exitListener);
+        menu.add(exitItem);
+    }
 
     protected void createAndShowGUI() {
         // set native look and feel
@@ -105,11 +190,6 @@ public class FrameGatewayTray implements DavGatewayTrayInterface {
         } catch (Exception e) {
             DavGatewayTray.warn("Unable to set system look and feel", e);
         }
-        // MacOS
-        if (System.getProperty("mrj.version") != null) {
-            System.setProperty("apple.laf.useScreenMenuBar", "true");
-        }
-
 
         image = DavGatewayTray.loadImage("tray.png");
         image2 = DavGatewayTray.loadImage("tray2.png");
@@ -120,12 +200,6 @@ public class FrameGatewayTray implements DavGatewayTrayInterface {
         mainFrame.setTitle("DavMail Gateway");
         mainFrame.setIconImage(image);
 
-        // create a popup menu
-        JMenu menu = new JMenu("DavMail");
-        JMenuBar menuBar = new JMenuBar();
-        menuBar.add(menu);
-        mainFrame.setJMenuBar(menuBar);
-
         JPanel errorPanel = new JPanel();
         errorPanel.setBorder(BorderFactory.createTitledBorder("Last message"));
         errorPanel.setLayout(new BoxLayout(errorPanel, BoxLayout.X_AXIS));
@@ -152,62 +226,9 @@ public class FrameGatewayTray implements DavGatewayTrayInterface {
         mainPanel.add(messagePanel);
         mainFrame.add(mainPanel);
 
-        final AboutFrame aboutFrame = new AboutFrame();
-        // create an action settingsListener to listen for settings action executed on the tray icon
-        ActionListener aboutListener = new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
-                aboutFrame.update();
-                aboutFrame.setVisible(true);
-            }
-        };
-        // create menu item for the default action
-        JMenuItem aboutItem = new JMenuItem("About...");
-        aboutItem.addActionListener(aboutListener);
-        menu.add(aboutItem);
-
-        final SettingsFrame settingsFrame = new SettingsFrame();
-        // create an action settingsListener to listen for settings action executed on the tray icon
-        ActionListener settingsListener = new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
-                settingsFrame.reload();
-                settingsFrame.setVisible(true);
-            }
-        };
-        // create menu item for the default action
-        JMenuItem defaultItem = new JMenuItem("Settings...");
-        defaultItem.addActionListener(settingsListener);
-        menu.add(defaultItem);
-
-        JMenuItem logItem = new JMenuItem("Show logs...");
-        logItem.addActionListener(new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
-                Logger rootLogger = Logger.getRootLogger();
-                LF5Appender lf5Appender = (LF5Appender) rootLogger.getAppender("LF5Appender");
-                if (lf5Appender == null) {
-                    lf5Appender = new LF5Appender(new LogBrokerMonitor(LogLevel.getLog4JLevels()) {
-                        protected void closeAfterConfirm() {
-                            hide();
-                        }
-                    });
-                    lf5Appender.setName("LF5Appender");
-                    rootLogger.addAppender(lf5Appender);
-                }
-                lf5Appender.getLogBrokerMonitor().show();
-            }
-        });
-        menu.add(logItem);
-
-        // create an action exitListener to listen for exit action executed on the tray icon
-        ActionListener exitListener = new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
-                //noinspection CallToSystemExit
-                System.exit(0);
-            }
-        };
-        // create menu item for the exit action
-        JMenuItem exitItem = new JMenuItem("Exit");
-        exitItem.addActionListener(exitListener);
-        menu.add(exitItem);
+        aboutFrame = new AboutFrame();
+        settingsFrame = new SettingsFrame();
+        buildMenu();
 
         mainFrame.setMinimumSize(new Dimension(400, 180));
         mainFrame.pack();

src/java/davmail/ui/OSXAdapter.java

@@ -0,0 +1,124 @@
+package davmail.ui;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Proxy;
+
+/**
+ * Reflection based MacOS handler
+ */
+public class OSXAdapter implements InvocationHandler {
+
+    protected Object targetObject;
+    protected Method targetMethod;
+    protected String proxySignature;
+
+    static Object macOSXApplication;
+
+    // Pass this method an Object and Method equipped to perform application shutdown logic
+    // The method passed should return a boolean stating whether or not the quit should occur
+    public static void setQuitHandler(Object target, Method quitHandler) throws InvocationTargetException, ClassNotFoundException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+        setHandler(new OSXAdapter("handleQuit", target, quitHandler));
+    }
+
+    // Pass this method an Object and Method equipped to display application info
+    // They will be called when the About menu item is selected from the application menu
+    public static void setAboutHandler(Object target, Method aboutHandler) throws InvocationTargetException, IllegalAccessException, NoSuchMethodException, ClassNotFoundException, InstantiationException {
+        boolean enableAboutMenu = (target != null && aboutHandler != null);
+        if (enableAboutMenu) {
+            setHandler(new OSXAdapter("handleAbout", target, aboutHandler));
+        }
+        Method enableAboutMethod = macOSXApplication.getClass().getDeclaredMethod("setEnabledAboutMenu", new Class[]{boolean.class});
+        enableAboutMethod.invoke(macOSXApplication, enableAboutMenu);
+    }
+
+    // Pass this method an Object and a Method equipped to display application options
+    // They will be called when the Preferences menu item is selected from the application menu
+    public static void setPreferencesHandler(Object target, Method prefsHandler) throws InvocationTargetException, IllegalAccessException, NoSuchMethodException, ClassNotFoundException, InstantiationException {
+        boolean enablePrefsMenu = (target != null && prefsHandler != null);
+        if (enablePrefsMenu) {
+            setHandler(new OSXAdapter("handlePreferences", target, prefsHandler));
+        }
+        Method enablePrefsMethod = macOSXApplication.getClass().getDeclaredMethod("setEnabledPreferencesMenu", new Class[]{boolean.class});
+        enablePrefsMethod.invoke(macOSXApplication, enablePrefsMenu);
+    }
+
+    // Pass this method an Object and a Method equipped to handle document events from the Finder
+    // Documents are registered with the Finder via the CFBundleDocumentTypes dictionary in the
+    // application bundle's Info.plist
+    public static void setFileHandler(Object target, Method fileHandler) throws InvocationTargetException, ClassNotFoundException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+        setHandler(new OSXAdapter("handleOpenFile", target, fileHandler) {
+            // Override OSXAdapter.callTarget to send information on the
+            // file to be opened
+            public boolean callTarget(Object appleEvent) {
+                if (appleEvent != null) {
+                    try {
+                        Method getFilenameMethod = appleEvent.getClass().getDeclaredMethod("getFilename", (Class[]) null);
+                        String filename = (String) getFilenameMethod.invoke(appleEvent, (Object[]) null);
+                        this.targetMethod.invoke(this.targetObject, filename);
+                    } catch (Exception ex) {
+                        throw new RuntimeException(ex);
+                    }
+                }
+                return true;
+            }
+        });
+    }
+
+    // setHandler creates a Proxy object from the passed OSXAdapter and adds it as an ApplicationListener
+    public static void setHandler(OSXAdapter adapter) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException, InstantiationException {
+        Class applicationClass = Class.forName("com.apple.eawt.Application");
+        if (macOSXApplication == null) {
+            macOSXApplication = applicationClass.getConstructor((Class[]) null).newInstance((Object[]) null);
+        }
+        Class applicationListenerClass = Class.forName("com.apple.eawt.ApplicationListener");
+        Method addListenerMethod = applicationClass.getDeclaredMethod("addApplicationListener", new Class[]{applicationListenerClass});
+        // Create a proxy object around this handler that can be reflectively added as an Apple ApplicationListener
+        Object osxAdapterProxy = Proxy.newProxyInstance(OSXAdapter.class.getClassLoader(), new Class[]{applicationListenerClass}, adapter);
+        addListenerMethod.invoke(macOSXApplication, osxAdapterProxy);
+    }
+
+    // Each OSXAdapter has the name of the EAWT method it intends to listen for (handleAbout, for example),
+    // the Object that will ultimately perform the task, and the Method to be called on that Object
+    protected OSXAdapter(String proxySignature, Object target, Method handler) {
+        this.proxySignature = proxySignature;
+        this.targetObject = target;
+        this.targetMethod = handler;
+    }
+
+    // Override this method to perform any operations on the event
+    // that comes with the various callbacks
+    // See setFileHandler above for an example
+    public boolean callTarget(Object appleEvent) throws InvocationTargetException, IllegalAccessException {
+        Object result = targetMethod.invoke(targetObject, (Object[]) null);
+        return result == null || Boolean.valueOf(result.toString());
+    }
+
+    // InvocationHandler implementation
+    // This is the entry point for our proxy object; it is called every time an ApplicationListener method is invoked
+    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+        if (isCorrectMethod(method, args)) {
+            boolean handled = callTarget(args[0]);
+            setApplicationEventHandled(args[0], handled);
+        }
+        // All of the ApplicationListener methods are void; return null regardless of what happens
+        return null;
+    }
+
+    // Compare the method that was called to the intended method when the OSXAdapter instance was created
+    // (e.g. handleAbout, handleQuit, handleOpenFile, etc.)
+    protected boolean isCorrectMethod(Method method, Object[] args) {
+        return (targetMethod != null && proxySignature.equals(method.getName()) && args.length == 1);
+    }
+
+    // It is important to mark the ApplicationEvent as handled and cancel the default behavior
+    // This method checks for a boolean result from the proxy method and sets the event accordingly
+    protected void setApplicationEventHandled(Object event, boolean handled) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+        if (event != null) {
+            Method setHandledMethod = event.getClass().getDeclaredMethod("setHandled", new Class[]{boolean.class});
+            // If the target method returns a boolean, use that as a hint
+            setHandledMethod.invoke(event, handled);
+        }
+    }
+}

src/java/davmail/ui/OSXFrameGatewayTray.java

@@ -0,0 +1,46 @@
+package davmail.ui;
+
+import davmail.tray.DavGatewayTray;
+import davmail.tray.FrameGatewayTray;
+
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+/**
+ * MacOSX specific frame to handle menu
+ */
+public class OSXFrameGatewayTray extends FrameGatewayTray {
+
+    public boolean quit() {
+        return true;
+    }
+
+    protected void buildMenu() {
+        // create a popup menu
+        JMenu menu = new JMenu("Logs");
+        JMenuBar menuBar = new JMenuBar();
+        menuBar.add(menu);
+        mainFrame.setJMenuBar(menuBar);
+
+        JMenuItem logItem = new JMenuItem("Show logs...");
+        logItem.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                showLogs();
+            }
+        });
+        menu.add(logItem);
+    }
+
+
+    protected void createAndShowGUI() {
+        System.setProperty("apple.laf.useScreenMenuBar", "true");
+        super.createAndShowGUI();
+        try {
+            OSXAdapter.setAboutHandler(this, FrameGatewayTray.class.getDeclaredMethod("about", (Class[]) null));
+            OSXAdapter.setPreferencesHandler(this, FrameGatewayTray.class.getDeclaredMethod("preferences", (Class[]) null));
+        } catch (Exception e) {
+            DavGatewayTray.error("Error while loading the OSXAdapter", e);
+        }
+    }
+}