configuration.java

一个用java写的mail.里面的代码值得我们去研究！学习。

/*
** $Id: Configuration.java,v 1.9 2001/05/07 12:37:21 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.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import java.awt.FileDialog;
import java.awt.Rectangle;

import java.util.Enumeration;
import java.util.Properties;
import java.util.Vector;

import javax.mail.Session;

import javax.activation.CommandMap;
import javax.activation.FileTypeMap;
import javax.activation.MailcapCommandMap;
import javax.activation.MimetypesFileTypeMap;

import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;

import org.icemail.Package;

import org.icemail.util.ComponentFactory;
import org.icemail.util.ResourceUtilities;
import org.icemail.util.UserProperties;


/**
 * Class Configuration
 */
public class Configuration
{
  private static final int Debug_ = Package.DEBUG ? Package.getLevel( "Configuration" ) : 0;

  public static final String  DP_MAIN = "MAIN";

  public static final String  P_TRANSPORT_PROTO = ".mail.transport.protocol";
  public static final String  P_STORE_PROTO = ".mail.store.protocol";
  public static final String  P_SMTP_HOSTNAME = ".mail.smtp.host";

  public static final String  P_COMPOSE_REPLY_PREFIX = "composeReplyPrefix";
  public static final String  P_COMPOSE_REPLY_ENCLOSURE = "composeReplyEnclosure";
  public static final String  P_COMPOSE_FORWARD_PREFIX = "composeForwardPrefix";
  public static final String  P_COMPOSE_FORWARD_ENCLOSURE = "composeForwardEnclosure";
  public static final String  P_COMPOSE_FORWARD_ATTACHMENTS = "composeForwardAttachments";

  public static final String  P_STORE_LIST = "rootStoreList";
  public static final String  PP_STORE_URL = "storeURL.";
  public static final String  PP_STORE_NMSPC = "storeNameSpace.";

  public static final String  P_SIG_LIST = "signatureList";
  public static final String  PP_SIGNATURE = "signature.";
  public static final String  P_SIG_DEFAULT = PP_SIGNATURE + "default";

  public static final String  P_TEMP_DIR = "tempDirectory";
  public static final String  P_TEMP_DIR_GUESS = "tempDirGuess";

  public static final String  P_FROM_ADDRESS = "fromAddress";
  public static final String  P_FROM_PERSONAL = "fromPersonal";
  public static final String  P_REPLYTO_ADDRESS = "replyToAddress";
  public static final String  P_REPLYTO_PERSONAL = "replyToPersonal";
  public static final String  P_ORGANIZATION = "organization";

  public static final String  P_MAIN_WINDOW = "mainWindow";
  public static final String  P_MAIN_PANEL = P_MAIN_WINDOW + ".mainPanel";
  public static final String  P_MAIN_PANEL_DIVIDER = P_MAIN_PANEL + ".divider";

  public static final String  P_MSG_PANEL = P_MAIN_PANEL + ".msgPanel";
  public static final String  P_MSG_PANEL_DIVIDER = P_MSG_PANEL + ".divider";

  public static final String  P_MSG_VIEWER = P_MSG_PANEL + ".msgViewer";
  public static final String  P_MSG_VIEWER_HDR_DIVIDER = P_MSG_VIEWER + ".hdr.divider";
  public static final String  P_MSG_VIEWER_BODY_DIVIDER = P_MSG_VIEWER + ".body.divider";

  public static final String  P_ATTACH_WINDOW = "attachWindow";
  public static final String  PP_ATTACH_WINDOW = "attachWindow.";

  public static final String  P_HOTJAVA_BROWSER = "hotJavaBrowser";

  public static final String  P_LOCAL_MANUAL_URL = "localManual.path";

  public static final String  P_INCOMING_SOUND_FLAG = "media.incomingMail.sound.flag";
  public static final String  P_INCOMING_SOUND_URL = "media.incomingMail.sound.url";
  public static final String  P_INCOMING_SOUND_BUILTIN = "media.incomingMail.sound.builtin";
  
  private static Configuration Instance_ = null;

  private String            name_ = null;

  private boolean           haveWarned = true;

  private String            mimeFileName = null;
  private String            mailcapFileName = null;

  private File              homeDir = null;
  private Vector            mailcapTypes = new Vector();
  private TempFileManager   tempFileManager_ = null;

  /**
   * Create a configuration with the given name.
   * This method is private to limit the number of instantiations
   * to a single instance, which is accessed through getInstance().
   */
  private
  Configuration() {
    name_ = Configuration.DP_MAIN;
    determineHomeDirectory();
  }

  /**
   * Get the SINGLE instance of the configuration, creating it if necessary.
   *
   * @return the SINGLE instance of the configuration
   */
  static public synchronized Configuration
  getInstance() {
    if ( Configuration.Instance_ == null ) {
      Configuration.Instance_ = new Configuration();
    }
    return Configuration.Instance_;
  }

//............................................................
// Methods for manipulating specific configuration values

  /**
   */
  static public Vector
  getCharsets() {
    Vector xdefaults = new Vector();
    xdefaults.addElement( new String( "UTF-8" ) );

    return UserProperties.getStringVector( "charsetList", xdefaults );
  }

  /**
   * Get the last character set chosen by the user.
   */
  static public String
  getCharset() {
    return UserProperties.getProperty( "composeCharset", "UTF-8" );
  }
  /**
   * Set the last character set chosen by the user.
   */
  static public void
  setCharset( String value ) {
    UserProperties.setDynamicProperty( Configuration.DP_MAIN, "composeCharset", value );
  }

//............................................................
// Methods for manually manipulating specific configuration values

  static public Rectangle
  getBounds( String propName, Rectangle defBounds ) {
    defBounds.x = UserProperties.getProperty( propName + ".x", defBounds.x );
    defBounds.y = UserProperties.getProperty( propName + ".y", defBounds.y );
    defBounds.width = UserProperties.getProperty( propName + ".width", defBounds.width );
    defBounds.height = UserProperties.getProperty( propName + ".height", defBounds.height );

    return defBounds;
  }

  static public void
  saveBounds( String propName, Rectangle bounds ) {
    Properties xproperties = new Properties();

    xproperties.put( propName + ".x", String.valueOf( bounds.x ) );
    xproperties.put( propName + ".y", String.valueOf( bounds.y ) );
    xproperties.put( propName + ".width", String.valueOf( bounds.width ) );
    xproperties.put( propName + ".height", String.valueOf( bounds.height ) );

    UserProperties.setDynamicProperties( Configuration.DP_MAIN, xproperties );
  }

  static public int
  getDividerLocation( String propName, int defval ) {
    return UserProperties.getProperty( propName + ".location", defval );
  }

  static public void
  saveDividerLocation( String propName, int loc ) {
    UserProperties.setDynamicProperty( Configuration.DP_MAIN, propName + ".location",
                                       String.valueOf( loc ) );
  }

//............................................................
// Accessors

// used by ICEMail
  public File
  getHomeDirectory() {
    return this.homeDir;
  }

  public Enumeration
  getMailcapTypes() {
    return mailcapTypes.elements();
  }

//............................................................
// Mutators

// used by ICEMail
  public void
  setMimeFileName( String fileName ) {
    this.mimeFileName = fileName;
  }

// used by ICEMail
  public void
  setMailcapFileName( String fileName ) {
    this.mailcapFileName = fileName;
  }

//............................................................
// Helpers

  public void
  setProperty( String propName, boolean value ) {
    UserProperties.setDynamicProperty( name_, propName, ( value ? "true" : "false" ) );
  }

  public void
  setProperty( String propName, int value ) {
    UserProperties.setDynamicProperty( name_, propName, ""+value );
  }

  public void
  setProperty( String propName, String value ) {
    UserProperties.setDynamicProperty( name_, propName, value );
  }

  public void
  setStringArray( String propName, String[] strArray ) {
    StringBuffer buf = new StringBuffer();
    for ( int idx = 0 ; idx < strArray.length ; ++idx ) {
      buf.append( strArray[idx] );
      if ( idx < (strArray.length - 1) ) {
        buf.append( ":" );
      }
    }
    UserProperties.setDynamicProperty( name_, propName, buf.toString() );
  }

  public void
  setStringArray( String propName, Vector strArray ) {
    int size = strArray.size();
    StringBuffer buf = new StringBuffer();
    for ( int idx = 0 ; idx < size ; ++idx ) {
      buf.append( (String) strArray.elementAt(idx) );
      if ( idx < (size - 1) ) {
        buf.append( ":" );
      }
    }
    UserProperties.setDynamicProperty( name_, propName, buf.toString() );
  }

  public void