messagepanel.java

一个用java写的mail.里面的代码值得我们去研究！学习。

      MainFrame.getInstance().resetCursor();

      if ( newSelRow != -1 ) {
        messageTable_.setRowSelectionInterval( newSelRow, newSelRow );

        showTableRow( newSelRow );
      }
    }
  }

  private int[]
  getSelectedRows() {
    int[] rows = messageTable_.getSelectedRows();
    return rows;
  }

  private Message[]
  getSelectedMessages() {
    int[] rows = getSelectedRows();

    if ( rows.length < 1 )
      return new Message[0];

    Message[] msgs = new Message[ rows.length ];
    for ( int idx = 0 ; idx < rows.length ; ++idx ) {
      msgs[ idx ] = model_.getMessage( rows[ idx ] );
    }

    return msgs;
  }

// used by FolderTreePanel.java
  public void
  copySelectedMessages( Folder destFolder, boolean deleteMsgs ) {
    boolean closeDest = false;

    if ( folder_ == null || destFolder == null )
      return;
    
    synchronized( model_ ) {
      MainFrame.getInstance().setWaitCursor();

      Message[] msgs = getSelectedMessages();
      if ( msgs.length < 1 )
        return;


      Object[] xargs = new Object[1];
      xargs[0] = destFolder.getName();
      if ( deleteMsgs ) {
        statusBar_.showStatusMessage(
            ICEMail.getBundle().getFormatString( "MessagePanel.Moving", xargs ) );
      } else {
        statusBar_.showStatusMessage( 
          ICEMail.getBundle().getFormatString ( "MessagePanel.Copying", xargs ) );
      }

      try {
        MailUtilities.setFolderOpenAndReady( folder_, Folder.READ_WRITE );

        folder_.copyMessages( msgs, destFolder );
      } catch ( MessagingException ex ) {
        xargs[0] = ex.getMessage();
        ComponentFactory.showDialog( ICEMail.getBundle(), "MessagePanel.CopyingError",
                                     0, JOptionPane.ERROR_MESSAGE, xargs );

        deleteMsgs = false;
      }

      MainFrame.getInstance().resetCursor();

      try {
        if ( deleteMsgs ) {
          folder_.setFlags( msgs, new Flags(Flags.Flag.DELETED), true );

          int[] rows = getSelectedRows();
          
          model_.flushCache( rows );

          model_.fireRowsUpdated( rows );

          if ( rows.length == 1 ) {
            int newSelRow = rows[0] + 1;
            int numRows = messageTable_.getRowCount();

            if ( newSelRow >= numRows )
              newSelRow = numRows - 1;

            messageTable_.setRowSelectionInterval( newSelRow, newSelRow );
            
            showTableRow( newSelRow );
          }
        }
      } catch ( MessagingException ex ) {
        xargs[0] = ex.getMessage();
        ComponentFactory.showDialog( ICEMail.getBundle(), "MessagePanel.MarkingError",
                                     0, JOptionPane.ERROR_MESSAGE, xargs );
      }

      xargs[0] = destFolder.getName();
      if ( deleteMsgs ) {
        statusBar_.showStatusMessage( 
          ICEMail.getBundle().getFormatString ( "MessagePanel.Moved", xargs ) );
      } else {
        statusBar_.showStatusMessage( 
          ICEMail.getBundle().getFormatString ( "MessagePanel.Copied", xargs ) );
      }
    }
  }

  private void
  printSelectedMessages() {
    if ( folder_ == null )
      return;
    
    MainFrame.getInstance().setWaitCursor();

    Message[] msgs = getSelectedMessages();
    if ( msgs.length < 1 ) {
      return;
    }

    PrintMessageThread pThread =
      new PrintMessageThread( (Frame)getTopLevelAncestor(), msgs );

    pThread.start();

    MainFrame.getInstance().resetCursor();
  }

  private void
  dumpSelectedMessages() {
    if ( folder_ == null )
      return;
    
    MainFrame.getInstance().setWaitCursor();

    Message[] msgs = getSelectedMessages();
    if ( msgs.length < 1 )
      return;

    MainFrame.getInstance().resetCursor();

    int skipCount = 0;
    for ( int i = 0 ; i < msgs.length ; ++i ) {
      String title = ICEMail.getBundle().getString( "MessagePanel.Exporting.title" );

      FileDialog dlg =
        new FileDialog( (Frame)getTopLevelAncestor(), title, FileDialog.SAVE );

      dlg.show();
      String filename = dlg.getFile();
      String dirname = dlg.getDirectory();
      if ( filename == null || dirname == null ) {
        break;
      }

      try {
        Message msg = msgs[i];

        if ( msg instanceof MimeMessage ) {
          MimeMessage mimeMsg = (MimeMessage) msg;

          FileOutputStream out =
            new FileOutputStream( dirname + 
                ( dirname.endsWith(File.separator) ? "" : File.separator ) + filename );

          mimeMsg.writeTo( out );

          out.close();
        } else {
          ++skipCount;
        }
      } catch ( Exception ex ) {
        Object[] xargs = new Object[1];
        xargs[0] = ex.getMessage();
        ComponentFactory.showDialog( ICEMail.getBundle(), "MessagePanel.ExportError",
                                     0, JOptionPane.ERROR_MESSAGE, xargs );
      }
    }

    if ( skipCount > 0 ) {
      Object[] xargs = new Object[1];
      xargs[0] = String.valueOf( skipCount );
      ComponentFactory.showDialog( ICEMail.getBundle(), "MessagePanel.SkippedMsg",
                                   0, JOptionPane.INFORMATION_MESSAGE, xargs );
    }
  }

  private void
  showMessageProperties() {
    if ( folder_ == null )
      return;
    
    MainFrame.getInstance().setWaitCursor();

    Message[] msgs = getSelectedMessages();
    if ( msgs.length < 1 )
      return;

    MainFrame.getInstance().resetCursor();

    try {
      JDialog dlg = new PropertiesDialog( null, msgs[0], true );
      dlg.show();
    } catch ( Exception ex ) {
      Object[] xargs = new Object[1];
      xargs[0] = ex.getMessage();
      ComponentFactory.showDialog( ICEMail.getBundle(), "MessagePanel.PropError",
                                   0, JOptionPane.ERROR_MESSAGE, xargs );
    }
  }

  private void
  establishContents() {
  // create our folder model
    model_ = new FolderTableModel( colFields_ );

  //  TableSorter sorter = new TableSorter( model_ ); 

  // setup our container and components
    setLayout( new BorderLayout() );

    messageTable_ = new JTable( model_ );

    JTableHeader tblHdr = messageTable_.getTableHeader(); 
    tblHdr.addMouseListener( new IMouseAdapter() ); 

    configureMessageTable( messageTable_ );

  // find out what is pressed
    messageTable_.getSelectionModel().addListSelectionListener( new IListSelectionListener() );

    messageTable_.setDefaultRenderer( Date.class, new ITableCellRenderer() );
    messageTable_.setDefaultRenderer( String.class, new ITableCellRenderer() );
    messageTable_.setDefaultRenderer( JLabel.class, new ITableCellRenderer() );

    this.tblScroller = new JScrollPane( messageTable_ );
    
    this.tblScroller.setVerticalScrollBarPolicy(
        ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED );

    this.tblScroller.setHorizontalScrollBarPolicy(
        ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED );

    this.tblScroller.setMinimumSize( new Dimension(50, 50) );
    this.tblScroller.setPreferredSize( new Dimension(600, 125) );

    this.splitPane = new JSplitPane( JSplitPane.VERTICAL_SPLIT,
                                     this.tblScroller, viewer_ );
    
    this.splitPane.setContinuousLayout( true );
    this.splitPane.setDividerSize( 3 );

    add( this.splitPane, BorderLayout.CENTER );
  }

  private void
  configureMessageTable( JTable table ) {
    String resizePolicy = UserProperties.getProperty( "msgTbl.resizePolicy", "OFF" );

    if ( resizePolicy.equalsIgnoreCase( "OFF" ) ) {
      table.setAutoResizeMode( JTable.AUTO_RESIZE_OFF );
    } else if ( resizePolicy.equalsIgnoreCase( "ALL" ) ) {
      table.setAutoResizeMode( JTable.AUTO_RESIZE_ALL_COLUMNS );
    } else if ( resizePolicy.equalsIgnoreCase( "LAST" ) ) {
      table.setAutoResizeMode( JTable.AUTO_RESIZE_LAST_COLUMN );
    }

    boolean showGrid = UserProperties.getProperty( "msgTbl.showGrid", false );
    table.setShowGrid( showGrid );

    boolean showHGrid = UserProperties.getProperty( "msgTbl.showHorizGrid", false );
    table.setShowHorizontalLines( showHGrid );

    boolean showVGrid = UserProperties.getProperty( "msgTbl.showVertGrid", false );
    table.setShowVerticalLines( showVGrid );

    table.setColumnSelectionAllowed( false );
    table.setRowSelectionAllowed( true );

    Enumeration xenum = table.getColumnModel().getColumns();
    int xindex = 0;
    while ( xenum.hasMoreElements() ) {
      TableColumn tblColumn = (TableColumn)xenum.nextElement();
      tblColumn.setMinWidth(5);
      tblColumn.setMaxWidth(2048);
      tblColumn.setPreferredWidth( colWidths_[xindex] );
      tblColumn.setIdentifier( colFields_[xindex] );
      xindex++;
    }
  }

  private void
  loadTableColumns() {
    Vector fields = new Vector();

    for ( int i = 1 ; ; ++i ) {
      String field = UserProperties.getProperty( "msgTbl.column." + i, null );
      if ( field == null )
        break;
      fields.addElement( field );
    }

    colFields_ = new String[ fields.size() ];
    colWidths_ = new int[ fields.size() ];

    for ( int i = 0, c = 1 ; i < fields.size() ; ++i, ++c ) {
      colFields_[i] = (String) fields.elementAt(i);

      colWidths_[i] = UserProperties.getProperty( "msgTbl.column." + c + ".width", 50 );
    }
  }

  private void
  saveTableColumns() {
    Configuration config = Configuration.getInstance();

    Enumeration xenum = messageTable_.getColumnModel().getColumns();
    int xindex = 1;
    while ( xenum.hasMoreElements() ) {
      TableColumn xcolumn = (TableColumn)xenum.nextElement();

    // save column fields
      config.setProperty( "msgTbl.column." + xindex, xcolumn.getIdentifier().toString() );

    // save column widths
      config.setProperty( "msgTbl.column." + xindex + ".width", xcolumn.getWidth() );
      xindex++;
    }
  }

  /**
   * Get new mail for the selected folder.
   */
  private void
  getNewMail() {
    if ( folder_ != null ) {
      MainFrame.getInstance().setWaitCursor();
      MailEventThread.getInstance().notifyIncomingMail( folder_, false );

      Object[] xargs = new Object[1];
      xargs[0] = folder_.getName();
      String msg = ICEMail.getBundle().getFormatString( "MessagePanel.Retrieving", xargs );

      DialogRunner runner = new DialogRunner( new INewMailRunner(),
                                             (Frame)getTopLevelAncestor(),
                            ICEMail.getBundle().getString( "MessagePanel.Retrieving.title" ),
                                              msg );

      runner.start();
      MainFrame.getInstance().resetCursor();
    }
  }

  private void
  composeMessage( String command ) {
    MainFrame.getInstance().setWaitCursor();

    ListSelectionModel lm = messageTable_.getSelectionModel();

    int idx = lm.getMaxSelectionIndex();

    if ( command.startsWith( "COMPOSE" ) ||
         ( idx != -1 &&
           idx < messageTable_.getRowCount() &&
           messageTable_.isRowSelected( idx ) ) ) {
      int xstate = ComposeFrame.CREATING;
      if ( command.startsWith( "REPLY" ) ) {
        if ( command.endsWith( "ALL" ) ) {
          xstate = ComposeFrame.REPLYINGTOALL;
        } else {
          xstate = ComposeFrame.REPLYING;
        }
      } else if ( command.startsWith( "FORWARD" ) ) {
        xstate = ComposeFrame.FORWARDING;
      } else if ( command.startsWith( "EDIT" ) ) {