tempmanagerdialog.java

来自「一个用java写的mail.里面的代码值得我们去研究！学习。」· Java 代码 · 共 233 行

/*
** $Id: TempManagerDialog.java,v 1.5 2001/05/07 12:37:22 kunugi Exp $
**
** Copyright (c) 2000-2001 Jeff Gay
** on behalf of ICEMail.org <http://www.icemail.org>
** Copyright (c) 1998-2000 by Timothy Gerard Endres
** 
** This program is free software.
** 
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE. 
*/

package org.icemail.mail;

import java.awt.Container;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Frame;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import java.io.File;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

import javax.swing.border.EmptyBorder; 

import org.icemail.util.AWTUtilities; 
import org.icemail.util.ComponentFactory; 
import org.icemail.util.JFCUtilities; 
import org.icemail.util.UserProperties; 


/**
 * A dialog which allows the temporary file directory options to be configured.
 * The options are stored as part of the configuration properties.
 *
 * @see Configuration
 */
public class TempManagerDialog
  extends JDialog
{
  private JTextField pathField_;


  /**
   * Construct a dialog for configuring temporary file directory options.
   *
   * @param parent parent frame to return to after disposed
   */
  public
  TempManagerDialog( Frame parent ) {
    super( parent, true );

    establishContents();
    pack();

    Dimension sz = getSize();
    int w = UserProperties.getProperty( "tempManagerDialog.width", sz.width );
    int h = UserProperties.getProperty( "tempManagerDialog.height", sz.height );
    setSize( w, h );

    setLocation( AWTUtilities.computeDialogLocation( this ) );

    addWindowListener( new IWindowAdapter() );
  }

//............................................................

  private boolean
  savePath() {
    String xdirectory = pathField_.getText();

    if ( xdirectory != null && xdirectory.length() > 0 ) {
      File    xfile = new File( xdirectory );
      int     xoption = JOptionPane.YES_OPTION;

      if ( ! xfile.exists() ) {
        Object[] xargs = new Object[1];
        xargs[0] = xdirectory;

        xoption =
            ComponentFactory.showDialog( ICEMail.getBundle(), "TempManager.CreateDir",
                                         0, JOptionPane.INFORMATION_MESSAGE, xargs );

        if ( xoption == JOptionPane.YES_OPTION ) {
        // make the directory
          xfile.mkdirs();
        } else {
        // xoption is set to something other than YES
        }
      }

    // save the configured directory if necessary
      if ( xoption == JOptionPane.YES_OPTION ) {
        ICEMail.getTempFileManager().setDirectory( xdirectory );

        Configuration.getInstance().setProperty( Configuration.P_TEMP_DIR, xdirectory );

        Configuration.getInstance().saveProperties();

        return true;
      }
    }
    return false;
  }

  private void
  establishContents() {
    setTitle( ICEMail.getBundle().getString( "TempManager.Title" ) );

    Container cont = getContentPane();
    cont.setLayout( new GridBagLayout() );

    ActionListener xlistener = new IActionListener();

    int row = 0;

    JPanel namePan = new JPanel();
    namePan.setLayout( new GridBagLayout() );
    namePan.setBorder( new EmptyBorder( 4, 4, 4, 4 ) );
    AWTUtilities.constrain( cont, namePan, GridBagConstraints.HORIZONTAL,
                            GridBagConstraints.CENTER, 0, row++, 2, 1, 1.0, 0.0 );

    JLabel  lbl;
    lbl = ComponentFactory.getLabel( ICEMail.getBundle(), "TempManager.Directory" );
    lbl.setHorizontalAlignment( JLabel.RIGHT );
    AWTUtilities.constrain( namePan, lbl, GridBagConstraints.NONE,
                            GridBagConstraints.WEST, 0, 0, 1, 1, 0.0, 0.0 );

    pathField_ =
      ComponentFactory.getTextField( ICEMail.getBundle(), "TempManager.Directory", null );
    AWTUtilities.constrain( namePan, pathField_, GridBagConstraints.HORIZONTAL,
                            GridBagConstraints.WEST, 1, 0, 1, 1, 1.0, 0.0 );

    String path = UserProperties.getProperty( Configuration.P_TEMP_DIR, null );
    if ( path == null ) {
      path = UserProperties.getProperty( Configuration.P_TEMP_DIR_GUESS, "" );
    }
    pathField_.setText( path );

    JPanel btnPan = new JPanel();
    btnPan.setLayout( new GridBagLayout() );
    btnPan.setBorder( JFCUtilities.StandardBorder );
    AWTUtilities.constrain( cont, btnPan, GridBagConstraints.HORIZONTAL,
                            GridBagConstraints.CENTER, 0, row++, 2, 1, 1.0, 0.0 );

    JButton btn;
    btn = ComponentFactory.getButton( ICEMail.getBundle(), "TempManager.Save",
                                      xlistener, null );
    AWTUtilities.constrain( btnPan, btn, GridBagConstraints.HORIZONTAL,
                            GridBagConstraints.CENTER, 0, 0, 1, 1, 1.0, 0.0 );

    btn = ComponentFactory.getButton( ICEMail.getBundle(), "TempManager.Cancel",
                                      xlistener, null );
    AWTUtilities.constrain( btnPan, btn, GridBagConstraints.HORIZONTAL,
                            GridBagConstraints.CENTER, 1, 0, 1, 1, 1.0, 0.0 );
  }

//............................................................

  private class IActionListener
    implements ActionListener
  {
    /**
     * Invoked when an action occurs.
     * <p>
     * Implementation of java.awt.event.ActionListener.actionPerformed()
     *
     * @param event the action event that occured
     */
    public void
    actionPerformed( ActionEvent event ) {
      boolean xdisposeIt = false;
      String  xcommand = event.getActionCommand();

      if ( xcommand.equals( "SAVE" ) ) {
        xdisposeIt = savePath();
      } else if ( xcommand.equals( "CANCEL" ) ) {
        xdisposeIt = true;
      }

      if ( xdisposeIt )
        dispose();
    }
  }

//............................................................

  /**
   * A internal class to handle the closing of window by the window manager,
   * i.e. disposing of the window properly.
   */
  private class IWindowAdapter
    extends WindowAdapter
  {
    public void
    windowClosing( WindowEvent event ) {
      event.getWindow().dispose();
    }

    public void
    windowActivated( WindowEvent event ) {
      if ( pathField_ != null ) {
        pathField_.requestFocus();
        pathField_.selectAll();
      }
    }
  }

}