src/jalview/gui/APQHandlers.java

   1 package jalview.gui;
   2
   3 import jalview.util.MessageManager;
   4 import jalview.util.Platform;
   5
   6 import java.awt.Desktop;
   7 import java.awt.desktop.AboutEvent;
   8 import java.awt.desktop.AboutHandler;
   9 import java.awt.desktop.PreferencesEvent;
  10 import java.awt.desktop.PreferencesHandler;
  11 import java.awt.desktop.QuitEvent;
  12 import java.awt.desktop.QuitHandler;
  13 import java.awt.desktop.QuitResponse;
  14 import java.awt.desktop.QuitStrategy;
  15
  16 import javax.swing.JOptionPane;
  17
  18 public class APQHandlers
  19 {
  20   private static boolean setAPQHandlers = false;
  21
  22   public APQHandlers() {
  23   }
  24
  25   protected static boolean setAPQHandlers(jalview.gui.Desktop jalviewDesktop)
  26   {
  27     // flagging this test to avoid unnecessary reflection
  28     if (!setAPQHandlers)
  29     {
  30       // see if the Quit, About and Preferences handlers are available
  31       Class desktopClass = Desktop.class;
  32       Desktop hdesktop = Desktop.getDesktop();
  33
  34       try
  35       {
  36         Float specversion = Float.parseFloat(
  37                 System.getProperty("java.specification.version"));
  38
  39         if (specversion >= 9)
  40         {
  41           if (Platform.isAMac())
  42           {
  43             if (desktopClass.getDeclaredMethod("setAboutHandler",
  44                     new Class[]
  45                     { AboutHandler.class }) != null)
  46             {
  47
  48               hdesktop.setAboutHandler(new AboutHandler()
  49               {
  50                 @Override
  51                 public void handleAbout(AboutEvent e)
  52                 {
  53                   jalviewDesktop.aboutMenuItem_actionPerformed(null);
  54                 }
  55               });
  56
  57             }
  58
  59             if (desktopClass.getDeclaredMethod("setPreferencesHandler",
  60                     new Class[]
  61                     { PreferencesHandler.class }) != null)
  62             {
  63
  64               hdesktop.setPreferencesHandler(
  65                       new PreferencesHandler()
  66               {
  67                         @Override
  68                         public void handlePreferences(
  69                                 PreferencesEvent e)
  70                         {
  71                           jalviewDesktop.preferences_actionPerformed(null);
  72                         }
  73                       });
  74
  75             }
  76
  77             if (desktopClass.getDeclaredMethod("setQuitHandler",
  78                     new Class[]
  79                     { QuitHandler.class }) != null)
  80             {
  81
  82               hdesktop.setQuitHandler(new QuitHandler()
  83               {
  84                 @Override
  85                 public void handleQuitRequestWith(
  86                         QuitEvent e, QuitResponse r)
  87                 {
  88                   boolean confirmQuit = jalview.bin.Cache
  89                           .getDefault(
  90                                   jalview.gui.Desktop.CONFIRM_KEYBOARD_QUIT,
  91                                   true);
  92                   int n;
  93                   if (confirmQuit)
  94                   {
  95                     n = JOptionPane.showConfirmDialog(null,
  96                             MessageManager.getString("label.quit_jalview"),
  97                             MessageManager.getString("action.quit"),
  98                             JOptionPane.OK_CANCEL_OPTION,
  99                             JOptionPane.PLAIN_MESSAGE, null);
 100                   }
 101                   else
 102                   {
 103                     n = JOptionPane.OK_OPTION;
 104                   }
 105                   if (n == JOptionPane.OK_OPTION)
 106                   {
 107                     System.out.println("Shortcut Quit confirmed by user");
 108                     jalviewDesktop.quit();
 109                     r.performQuit(); // probably won't reach this line, but just
 110                                      // in
 111                                      // case
 112                   }
 113                   else
 114                   {
 115                     r.cancelQuit();
 116                     System.out.println("Shortcut Quit cancelled by user");
 117                   }
 118                 }
 119               });
 120               hdesktop.setQuitStrategy(
 121                       QuitStrategy.CLOSE_ALL_WINDOWS);
 122
 123             }
 124           }
 125           setAPQHandlers = true;
 126         }
 127         else
 128         {
 129           System.out.println(
 130                   "Not going to try setting APQ Handlers as java.spec.version is "
 131                           + specversion);
 132         }
 133
 134       } catch (Exception e)
 135       {
 136         System.out.println(
 137                 "Exception when looking for About, Preferences, Quit Handlers");
 138         // e.printStackTrace();
 139       } catch (Throwable t)
 140       {
 141         System.out.println(
 142                 "Throwable when looking for About, Preferences, Quit Handlers");
 143         // t.printStackTrace();
 144       }
 145
 146     }
 147
 148     return setAPQHandlers;
 149   }
 150
 151 }