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