src/jalview/gui/APQHandlers.java

   1 /*
   2  * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
   3  * Copyright (C) $$Year-Rel$$ The Jalview Authors
   4  *
   5  * This file is part of Jalview.
   6  *
   7  * Jalview is free software: you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation, either version 3
  10  * of the License, or (at your option) any later version.
  11  *
  12  * Jalview is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty
  14  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  15  * PURPOSE.  See the GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
  19  * The Jalview Authors are detailed in the 'AUTHORS' file.
  20  */
  21 package jalview.gui;
  22
  23 import jalview.bin.Cache;
  24 import jalview.util.MessageManager;
  25 import jalview.util.Platform;
  26
  27 import java.awt.Desktop;
  28 import java.awt.desktop.AboutEvent;
  29 import java.awt.desktop.AboutHandler;
  30 import java.awt.desktop.PreferencesEvent;
  31 import java.awt.desktop.PreferencesHandler;
  32 import java.awt.desktop.QuitEvent;
  33 import java.awt.desktop.QuitHandler;
  34 import java.awt.desktop.QuitResponse;
  35 import java.awt.desktop.QuitStrategy;
  36
  37 import javax.swing.JOptionPane;
  38
  39 public class APQHandlers
  40 {
  41   private static boolean setAPQHandlers = false;
  42
  43   public APQHandlers() {
  44   }
  45
  46   protected static boolean setAPQHandlers(jalview.gui.Desktop jalviewDesktop)
  47   {
  48     // flagging this test to avoid unnecessary reflection
  49     if (!setAPQHandlers)
  50     {
  51       // see if the Quit, About and Preferences handlers are available
  52       Class desktopClass = Desktop.class;
  53       Desktop hdesktop = Desktop.getDesktop();
  54
  55       try
  56       {
  57         Float specversion = Float.parseFloat(
  58                 System.getProperty("java.specification.version"));
  59
  60         if (specversion >= 9)
  61         {
  62           if (Platform.isAMacAndNotJS())
  63           {
  64             if (desktopClass.getDeclaredMethod("setAboutHandler",
  65                     new Class[]
  66                     { AboutHandler.class }) != null)
  67             {
  68
  69               hdesktop.setAboutHandler(new AboutHandler()
  70               {
  71                 @Override
  72                 public void handleAbout(AboutEvent e)
  73                 {
  74                   jalviewDesktop.aboutMenuItem_actionPerformed(null);
  75                 }
  76               });
  77
  78             }
  79
  80             if (desktopClass.getDeclaredMethod("setPreferencesHandler",
  81                     new Class[]
  82                     { PreferencesHandler.class }) != null)
  83             {
  84
  85               hdesktop.setPreferencesHandler(
  86                       new PreferencesHandler()
  87               {
  88                         @Override
  89                         public void handlePreferences(
  90                                 PreferencesEvent e)
  91                         {
  92                           jalviewDesktop.preferences_actionPerformed(null);
  93                         }
  94                       });
  95
  96             }
  97
  98             if (desktopClass.getDeclaredMethod("setQuitHandler",
  99                     new Class[]
 100                     { QuitHandler.class }) != null)
 101             {
 102
 103               hdesktop.setQuitHandler(new QuitHandler()
 104               {
 105                 @Override
 106                 public void handleQuitRequestWith(
 107                         QuitEvent e, QuitResponse r)
 108                 {
 109                   boolean confirmQuit = Cache
 110                           .getDefault(
 111                                   jalview.gui.Desktop.CONFIRM_KEYBOARD_QUIT,
 112                                   true);
 113                   int n;
 114                   if (confirmQuit)
 115                   {
 116                     n = JOptionPane.showConfirmDialog(null,
 117                             MessageManager.getString("label.quit_jalview"),
 118                             MessageManager.getString("action.quit"),
 119                             JOptionPane.OK_CANCEL_OPTION,
 120                             JOptionPane.PLAIN_MESSAGE, null);
 121                   }
 122                   else
 123                   {
 124                     n = JOptionPane.OK_OPTION;
 125                   }
 126                   if (n == JOptionPane.OK_OPTION)
 127                   {
 128                     System.out.println("Shortcut Quit confirmed by user");
 129                     jalviewDesktop.quit();
 130                     r.performQuit(); // probably won't reach this line, but just
 131                                      // in
 132                                      // case
 133                   }
 134                   else
 135                   {
 136                     r.cancelQuit();
 137                     System.out.println("Shortcut Quit cancelled by user");
 138                   }
 139                 }
 140               });
 141               hdesktop.setQuitStrategy(
 142                       QuitStrategy.CLOSE_ALL_WINDOWS);
 143
 144             }
 145           }
 146           setAPQHandlers = true;
 147         }
 148         else
 149         {
 150           System.out.println(
 151                   "Not going to try setting APQ Handlers as java.spec.version is "
 152                           + specversion);
 153         }
 154
 155       } catch (Exception e)
 156       {
 157         System.out.println(
 158                 "Exception when looking for About, Preferences, Quit Handlers");
 159         // e.printStackTrace();
 160       } catch (Throwable t)
 161       {
 162         System.out.println(
 163                 "Throwable when looking for About, Preferences, Quit Handlers");
 164         // t.printStackTrace();
 165       }
 166
 167     }
 168
 169     return setAPQHandlers;
 170   }
 171
 172 }