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.util.MessageManager;
  24 import jalview.util.Platform;
  25
  26 import java.awt.Desktop;
  27 import java.awt.desktop.AboutEvent;
  28 import java.awt.desktop.AboutHandler;
  29 import java.awt.desktop.PreferencesEvent;
  30 import java.awt.desktop.PreferencesHandler;
  31 import java.awt.desktop.QuitEvent;
  32 import java.awt.desktop.QuitHandler;
  33 import java.awt.desktop.QuitResponse;
  34 import java.awt.desktop.QuitStrategy;
  35
  36 import javax.swing.JOptionPane;
  37
  38 public class APQHandlers
  39 {
  40   private static boolean setAPQHandlers = false;
  41
  42   public APQHandlers() {
  43   }
  44
  45   protected static boolean setAPQHandlers(jalview.gui.Desktop jalviewDesktop)
  46   {
  47     // flagging this test to avoid unnecessary reflection
  48     if (!setAPQHandlers)
  49     {
  50       // see if the Quit, About and Preferences handlers are available
  51       Class desktopClass = Desktop.class;
  52       Desktop hdesktop = Desktop.getDesktop();
  53
  54       try
  55       {
  56         Float specversion = Float.parseFloat(
  57                 System.getProperty("java.specification.version"));
  58
  59         if (specversion >= 9)
  60         {
  61           if (Platform.isAMacAndNotJS())
  62           {
  63             if (desktopClass.getDeclaredMethod("setAboutHandler",
  64                     new Class[]
  65                     { AboutHandler.class }) != null)
  66             {
  67
  68               hdesktop.setAboutHandler(new AboutHandler()
  69               {
  70                 @Override
  71                 public void handleAbout(AboutEvent e)
  72                 {
  73                   jalviewDesktop.aboutMenuItem_actionPerformed(null);
  74                 }
  75               });
  76
  77             }
  78
  79             if (desktopClass.getDeclaredMethod("setPreferencesHandler",
  80                     new Class[]
  81                     { PreferencesHandler.class }) != null)
  82             {
  83
  84               hdesktop.setPreferencesHandler(
  85                       new PreferencesHandler()
  86               {
  87                         @Override
  88                         public void handlePreferences(
  89                                 PreferencesEvent e)
  90                         {
  91                           jalviewDesktop.preferences_actionPerformed(null);
  92                         }
  93                       });
  94
  95             }
  96
  97             if (desktopClass.getDeclaredMethod("setQuitHandler",
  98                     new Class[]
  99                     { QuitHandler.class }) != null)
 100             {
 101
 102               hdesktop.setQuitHandler(new QuitHandler()
 103               {
 104                 @Override
 105                 public void handleQuitRequestWith(
 106                         QuitEvent e, QuitResponse r)
 107                 {
 108                   boolean confirmQuit = jalview.bin.Cache
 109                           .getDefault(
 110                                   jalview.gui.Desktop.CONFIRM_KEYBOARD_QUIT,
 111                                   true);
 112                   int n;
 113                   if (confirmQuit)
 114                   {
 115                     n = JOptionPane.showConfirmDialog(null,
 116                             MessageManager.getString("label.quit_jalview"),
 117                             MessageManager.getString("action.quit"),
 118                             JOptionPane.OK_CANCEL_OPTION,
 119                             JOptionPane.PLAIN_MESSAGE, null);
 120                   }
 121                   else
 122                   {
 123                     n = JOptionPane.OK_OPTION;
 124                   }
 125                   if (n == JOptionPane.OK_OPTION)
 126                   {
 127                     System.out.println("Shortcut Quit confirmed by user");
 128                     jalviewDesktop.quit();
 129                     r.performQuit(); // probably won't reach this line, but just
 130                                      // in
 131                                      // case
 132                   }
 133                   else
 134                   {
 135                     r.cancelQuit();
 136                     System.out.println("Shortcut Quit cancelled by user");
 137                   }
 138                 }
 139               });
 140               hdesktop.setQuitStrategy(
 141                       QuitStrategy.CLOSE_ALL_WINDOWS);
 142
 143             }
 144           }
 145           setAPQHandlers = true;
 146         }
 147         else
 148         {
 149           System.out.println(
 150                   "Not going to try setting APQ Handlers as java.spec.version is "
 151                           + specversion);
 152         }
 153
 154       } catch (Exception e)
 155       {
 156         System.out.println(
 157                 "Exception when looking for About, Preferences, Quit Handlers");
 158         // e.printStackTrace();
 159       } catch (Throwable t)
 160       {
 161         System.out.println(
 162                 "Throwable when looking for About, Preferences, Quit Handlers");
 163         // t.printStackTrace();
 164       }
 165
 166     }
 167
 168     return setAPQHandlers;
 169   }
 170
 171 }