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  • /* ShortCut.java
     *
     * This file is part of Artemis
     *
     * Copyright(C) 2011  Genome Research Limited
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License
     * as published by the Free Software Foundation; either version 2
     * of the License, or(at your option) any later version.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
     *
     */
    package uk.ac.sanger.artemis.components;
    
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.ObjectInputStream;
    import java.io.ObjectOutputStream;
    import java.io.Serializable;
    
    import javax.swing.JMenuItem;
    import javax.swing.KeyStroke;
    
    import uk.ac.sanger.artemis.Options;
    import uk.ac.sanger.artemis.components.database.DatabaseJPanel;
    
    /**
     * Used to cache shortcut keystroke between sessions
     */
    class ShortCut implements Serializable
    {
      private static final long serialVersionUID = 1L;
      private String shortCutName;
      private String menuName;
      private KeyStroke ks;
      private static org.apache.log4j.Logger logger4j = 
          org.apache.log4j.Logger.getLogger(DatabaseJPanel.class);
      private static String SHORTCUT_CACHE_PATH = Options.CACHE_PATH + File.separatorChar + "MenuShortCuts";
      private static String REGEXP_REPLACE = "[ /]";
        
      ShortCut(final String menuName, final String shortCutName, final KeyStroke ks)
      {
        this.menuName = menuName;
        this.shortCutName = shortCutName;
        this.ks = ks;
        writeCache();
      }
        
      private void writeCache()
      {
        try
        {
          File dir = new File(SHORTCUT_CACHE_PATH);
          if(!dir.exists())
            dir.mkdirs();
          FileOutputStream fos = new FileOutputStream(SHORTCUT_CACHE_PATH +
              File.separatorChar + menuName + ":" + shortCutName.replaceAll(REGEXP_REPLACE, "_"));
          ObjectOutputStream out = new ObjectOutputStream(fos);
          out.writeObject(ShortCut.this);
          out.close();
        }
        catch(Exception ex)
        {
          ex.getMessage();
        }
      }
      
      /**
       * Return true if shortcut_cache flag is set.
       * @return
       */
      protected static boolean usingCache()
      {
        return Options.getOptions().getPropertyTruthValue("shortcut_cache");
      }
      
      private static File[] getCachedShortCuts()
      {
        File cacheDir = new File(SHORTCUT_CACHE_PATH);
        if(cacheDir.exists())
          return cacheDir.listFiles();
        return null;
      }
    
      protected static void applyShortCutFromCache(final String menuName, final JMenuItem menuItem)
      {
        File[] shorts = getCachedShortCuts();
        if(shorts != null)
        {
          String shortCutName = menuItem.getText();
          for(int i=0; i<shorts.length; i++)
          {
            if(shorts[i].getName().equals(menuName + ":" + shortCutName.replaceAll(REGEXP_REPLACE, "_")))
            {
              try
              {
                FileInputStream fis = new FileInputStream(shorts[i]);
                ObjectInputStream in = new ObjectInputStream(fis);
                ShortCut sc = (ShortCut) in.readObject();
                in.close();
                menuItem.setAccelerator(sc.ks);
                
                logger4j.debug("USING CACHED SHORTCUT ("+menuItem.getText()+
                    ") FROM: "+shorts[i].getAbsolutePath());
              }
              catch (FileNotFoundException e)
              {
                System.err.println(e.getMessage());
              }
              catch (IOException e)
              {
                System.err.println(e.getMessage());
              }
              catch (ClassNotFoundException e)
              {
                System.err.println(e.getMessage());
              }
            }
          }
        }
      }
    }