composeframe.java

一个用java写的mail.里面的代码值得我们去研究！学习。

            String ad = (String) descV.elementAt(ai);
            attachComboBox_.addItem( ad );
          }
        }

        headers_ = MessageUtilities.getHeaders( xnew );
        headers_.removeHeader( "from" );
        headers_.removeHeader( "to" );
        headers_.removeHeader( "cc" );
        headers_.removeHeader( "bcc" );
        headers_.removeHeader( "subject" );
        headers_.removeHeader( "content-type" );

      // apply any adornments
        if ( xprefix != null ) {
          prefixMessageText( xprefix );
        }

        if ( xenclosure != null ) {
          encloseMessageText( xenclosure );
        }

        if ( MessageUtilities.isHighPriority( originalMessage_ ) ) {
          priorityButton_.rotate( 1 );
        } else if ( MessageUtilities.isLowPriority( originalMessage_ ) ) {
          priorityButton_.rotate( 3 );
        }
      } else {
      // no supplied message, just provide a
      // from address to start with
        fromText_.setText( MessageUtilities.getDefaultFromString() );
      }

    // add the custom headers ( X-Mailer, Organization... )
      String orgStr = UserProperties.getProperty( Configuration.P_ORGANIZATION, null );

      String mailerStr =
        "ICEMail (rel " + ICEMail.getVersionString() + ") <http://www.icemail.org/>";

      headers_.setHeader( "X-Mailer", mailerStr );

      if ( orgStr != null && orgStr.length() > 0 ) {
        headers_.setHeader( "Organization", orgStr );
      }
    } catch ( MessagingException xex ) {
      System.out.println( "ComposeFrame.setMessage() failed: " + xex.toString() );
    }
  }

  private String
  getReplyPrefix( Message msg ) {
    String xresult =
      UserProperties.getProperty( Configuration.P_COMPOSE_REPLY_PREFIX, null );

    if ( xresult != null && xresult.length() > 0 ) {
    // FIXME
    // additional parameter replacements could be performed on the string
    } else {
      xresult = null;
    }
    return xresult;
  }

  private String
  getReplyEnclosure( Message msg ) {
    String xresult =
      UserProperties.getProperty( Configuration.P_COMPOSE_REPLY_ENCLOSURE, null );

    if ( xresult != null && xresult.length() > 0 ) {
    // FIXME additional parameter replacements
    //        could be performed on the string
    } else {
      xresult = null;
    }
    return xresult;
  }

  private String
  getForwardPrefix( Message msg ) {
    String xresult =
      UserProperties.getProperty( Configuration.P_COMPOSE_FORWARD_PREFIX, null );

    if ( xresult != null && xresult.length() > 0 ) {
    // FIXME
    // additional parameter replacements
    // could be performed on the string
    } else {
      xresult = null;
    }
    return xresult;
  }

  private String
  getForwardEnclosure( Message msg ) {
    String xresult =
      UserProperties.getProperty( Configuration.P_COMPOSE_FORWARD_ENCLOSURE, null );

    if ( xresult != null && xresult.length() > 0 ) {
    // FIXME
    // additional parameter replacements could be performed on the string
    } else {
      xresult = null;
    }
    return xresult;
  }

// FIXME
// I want to be able to use variables like {From} and {To}
// and {Date} to insert header values into this string...
  private void
  prefixMessageText( String prefix ) {
    String xcontents = messageText_.getText();

    if ( xcontents == null || xcontents.length() == 0 )
      return;

    try {
      BufferedReader xreader =
        new BufferedReader( new StringReader( xcontents ) );
      StringBuffer xnew = new StringBuffer( xcontents.length() );

      for ( String xline = null; ( xline = xreader.readLine() ) != null ; ) {
        xnew.append( prefix + xline + '\n' );
      }
      messageText_.setText( xnew.toString() );
    } catch( IOException xex ) { }
  }

  // FIXME
  // I want to be able to use variables like {From} and {To}
  // and {Date} to insert header values into this string...
  private void
  encloseMessageText( String enclosure ) {
    String xreplacement = '\n' + enclosure + "\n\n";

  // prefix the message with the enclosure
    messageText_.setCaretPosition( 0 );
    messageText_.moveCaretPosition( 0 );
    messageText_.replaceSelection( xreplacement );

  // postfix the message with the enclosure
    int end = messageText_.getDocument().getEndPosition().getOffset();
    messageText_.setCaretPosition( end - 1 );
    messageText_.moveCaretPosition( end - 1 );
    messageText_.replaceSelection( xreplacement );
  }

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

  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 ) {
    // FIXME determine which commands need to call the following:
    // getInputContext().endComposition();

      String command = event.getActionCommand();

      if ( command.equals( "CLOSE" ) ) {
        closeWindow();
      } else if ( command.equals( sendButton_.getActionCommand() ) ) {
        sendMessage();
      } else if ( command.equals( printButton_.getActionCommand() ) ) {
        printMessage();
      } else if ( command.startsWith( "ADDR:" ) ) {
        String addrStr = null;
        String addrName = command.substring( 5 );

        addrStr = UserProperties.getProperty( ("address." + addrName), null );

        if ( addrStr != null ) {
          pasteAddress( addrStr );
        }
      } else if ( command.startsWith( "SIGN:" ) ) {
        String sigStr = null;
        String sigName = command.substring( 5 );

        if ( sigName.equals( "DEFAULT" ) ) {
          sigStr = UserProperties.getProperty( "signature.default", null );
        } else if ( sigName.equals( "NONE" ) ) {
          sigStr = "";
        } else {
          sigStr = UserProperties.getProperty( ("signature." + sigName), null );
        }

        if ( sigStr != null ) {
          setSignature( sigStr );
        }
      } else if ( command.equals( "HEADERS" ) ) {
        editHeaders();
      } else if ( command.equals( attachButton_.getActionCommand() ) ) {
        String text = messageText_.getSelectedText();
        if ( text != null && text.length() > 0 ) {
          attachSelection( text );
        } else {
          attachFile();
        }
      } else if ( command.equals( "PREFIX" ) ) {
        prefixSelection();
      } else if ( command.equals( detachButton_.getActionCommand() ) ) {
        detachFile();
      } else if ( command.equals( "CUT" ) ) {
        if ( currentFocus_ != null ) {
          currentFocus_.cut();
        }
      } else if ( command.equals( "COPY" ) ) {
        if ( currentFocus_ != null ) {
          currentFocus_.copy();
        }
      } else if ( command.equals( "PASTE" ) ) {
        if ( currentFocus_ != null ) {
          currentFocus_.paste();
        }
      } else if ( command.equals( "PASTEFILE" ) ) {
        if ( messageText_ != null ) {
          pasteFile();
        }
      } else if ( command.equals( "UNDO" ) ) {
        if ( messageUndo_ != null && messageUndo_.canUndoOrRedo() ) {
          messageUndo_.undoOrRedo();
        }
      } else if ( command.equals( "CHARSET" ) ) {
        int xitem = charsets_.indexOf( charsetLbl_.getText() ) + 1;

        if ( xitem >= charsets_.size() ) {
          xitem = 0;
        }
        charsetLbl_.setText( (String)charsets_.elementAt( xitem ) );
      } else if ( command.equals( "SIGNON" ) ) {
      } else if ( command.equals( "SIGNCLEAR" ) ) {
      } else if ( command.equals( "SIGNOFF" ) ) {
      } else if ( command.equals( "ENCRYPTON" ) ) {
      } else if ( command.equals( "ENCRYPTOFF" ) ) {
      } else if ( command.equals( "HIGHPRIORITY" ) ) {
        headers_.setHeader( "X-Priority", "1" );
        headers_.setHeader( "Importance", "high" );
      } else if ( command.equals( "NORMALPRIORITY" ) ) {
        headers_.removeHeader( "X-Priority" );
        headers_.removeHeader( "Importance" );
      } else if ( command.equals( "LOWPRIORITY" ) ) {
        headers_.setHeader( "Importance", "low" );
        headers_.setHeader( "X-Priority", "5" );
      } else {
        System.err.println( "ComposeFrame.actionPerformed() - unknown command '" +
                            command + "'" );
      }
    }
  }

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

    private class IWindowDisposer
      implements Runnable
    {
      public void run() {
        setVisible( false );
        setEnabled( false );
      }
    }

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

    private class IWindowAdapter
      extends WindowAdapter
    {
      public void
      windowClosing( WindowEvent e )
      {
        //System.out.println( "windowClosing(e)" );
        closeWindow();
      }
    }

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

    private class IFocusListener
      implements FocusListener
    {
      /**
       * <p>
       * Implementation of java.awt.event.FocusListener.focusLost()
       */
      public void
      focusLost( FocusEvent event ) { }

      /**
       * <p>
       * Implementation of java.awt.event.FocusListener.focusGained()
       */
      public void
      focusGained( FocusEvent event ) {
        Object comp = event.getSource();

        if ( comp instanceof JTextField || comp instanceof JTextPane ) {
          currentFocus_ = (JTextComponent)event.getSource();
        } else {
          currentFocus_ = null;
        }
      }
    }

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

    private class IUndoableEditListener
      implements UndoableEditListener
    {
      public void
      undoableEditHappened( UndoableEditEvent event ) {
        modified_ = true;
      }
    }

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

    private class IMouseAdapter
      extends MouseAdapter
    {
      private boolean       isPopupClick = false;
      private JPopupMenu    popup = null;

      public
      IMouseAdapter( JPopupMenu popup ) {
        super();
        this.popup = popup;
      }

      public void
      mousePressed( MouseEvent event ) {
        this.isPopupClick = false;

        if ( event.isPopupTrigger() ) {
          this.isPopupClick = true;
          Point pt =
            JFCUtilities.computePopupLocation( event, charsetLbl_, popup );
          this.popup.show( charsetLbl_, pt.x, pt.y );
        }
      }

      public void
      mouseReleased( MouseEvent event ) {
        if ( this.isPopupClick ) return;

        if ( event.isPopupTrigger() ) {
          this.isPopupClick = true;
          Point pt =
            JFCUtilities.computePopupLocation( event, charsetLbl_, popup );
          this.popup.show( charsetLbl_, pt.x, pt.y );
        }
      }

      public void
      mouseClicked( MouseEvent event ) {
        if ( this.isPopupClick ) {
          this.isPopupClick = false;
          return;
        }
        if ( event.getClickCount() == 2 ) {
          processDoubleClick();
        }
      }

      private void
      processDoubleClick() { }
    }

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

    private class IAbstractAction
    extends AbstractAction
    {
      private String charset_;

      public
      IAbstractAction( String charset ) {
        super( charset );
        charset_ = charset;
      }

      public void
      actionPerformed( ActionEvent  evt ) {
        int xitem = charsets_.indexOf( charset_ ) + 1;
        if ( xitem >= charsets_.size() )
          xitem = 0;
        charsetLbl_.setText( charset_ );
      }
    }
}