Swing/Preferences のバックアップ(No.7)

Terai Atsuhiro 2021-08-20 (金) 13:59:29

public abstract class AbstractHogePanel extends JPanel{
  final private Point     pos = new Point(0, 0);
  final private Dimension dim = new Dimension(900, 800);
  private JFrame frame;
  
  public AbstractHogePanel(){
    super();
    frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
    frame.addWindowListener(new java.awt.event.WindowAdapter(){
      public void windowClosing(WindowEvent e){
        exitActionPerformed(null);
      }
    });
    frame.addComponentListener(new ComponentAdapter(){
      public void componentMoved(ComponentEvent e){
        JFrame frm = (JFrame)e.getSource();
        if(frm.getExtendedState()==JFrame.NORMAL){
          try{
            pos.setLocation(frm.getLocationOnScreen());
          }catch(IllegalComponentStateException icse){}
        }
      }
      public void componentResized(ComponentEvent e){
        JFrame frm = (JFrame)e.getSource();
        if(frm.getExtendedState()==JFrame.NORMAL){
          dim.setSize(getSize());
        }
      }
      //void componentHidden(ComponentEvent e){}
      //void componentShown(ComponentEvent e)
    });
  }
  
  private String prefix = "";
  protected void setPrefix(String str){
    str = str.toLowerCase().trim();
    if(str!=null && str.length()>0){
      prefix = str+"_";
    }
  }
  protected void initLocation(Preferences lprefs){
    int xpos = lprefs.getInt(prefix+"locx", pos.x);
    int ypos = lprefs.getInt(prefix+"locy", pos.y);
    pos.setLocation(xpos,ypos);
    getFrame().setLocation(pos.x, pos.y);
    int wdim = lprefs.getInt(prefix+"dimw", dim.width);
    int hdim = lprefs.getInt(prefix+"dimh", dim.height);
    dim.setSize(wdim, hdim);
    this.setPreferredSize(dim);
  }
  protected void saveLocation(Preferences lprefs){
    lprefs.putInt(prefix+"locx", pos.x);
    lprefs.putInt(prefix+"locy", pos.y);
    lprefs.putInt(prefix+"dimw", dim.width);
    lprefs.putInt(prefix+"dimh", dim.height);
    try{
      lprefs.flush();
    }catch(java.util.prefs.BackingStoreException e){



    }
  }
  public JFrame getFrame(){
    return frame;
  }
  
  public void showPanel(){
    if(getFrame()!=null){
      JFrame f = getFrame();
      f.setExtendedState(JFrame.NORMAL);
      f.getContentPane().add(this, BorderLayout.CENTER);
      f.pack();
      f.show();
    }
  }
  
  protected class ExitAction extends AbstractAction{
    public ExitAction(){
      super("exit");
    }
    public void actionPerformed(ActionEvent evt){
      exitActionPerformed(evt);
    }
  }
  abstract public void exitActionPerformed(ActionEvent e);
}

public void exitActionPerformed(ActionEvent e){
  Preferences prefs = Preferences.userNodeForPackage(getClass());
  //Preferences prefs = getPreferences();
  //prefs.putBoolean("file_flag", xmlCheck.isSelected());
  saveLocation(prefs);
  JFrame frm = getFrame();
  frm.setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE);
  frm.dispose();
}