FolderModel.java Source code

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Here is the source code for FolderModel.java

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/*
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import javax.mail.*;
import java.util.Date;
import javax.swing.table.AbstractTableModel;

/**
 * Maps the messages in a Folder to the Swing's Table Model
 *
 * @author   Christopher Cotton
 * @author   Bill Shannon
 */

public class FolderModel extends AbstractTableModel {

    Folder folder;
    Message[] messages;

    String[] columnNames = { "Date", "From", "Subject" };
    Class[] columnTypes = { String.class, String.class, String.class };

    public void setFolder(Folder what) throws MessagingException {
        if (what != null) {

            // opened if needed
            if (!what.isOpen()) {
                what.open(Folder.READ_WRITE);
            }

            // get the messages
            messages = what.getMessages();
            cached = new String[messages.length][];
        } else {
            messages = null;
            cached = null;
        }
        // close previous folder and switch to new folder
        if (folder != null)
            folder.close(true);
        folder = what;
        fireTableDataChanged();
    }

    public Message getMessage(int which) {
        return messages[which];
    }

    //---------------------
    // Implementation of the TableModel methods
    //---------------------

    public String getColumnName(int column) {
        return columnNames[column];
    }

    public Class getColumnClass(int column) {
        return columnTypes[column];
    }

    public int getColumnCount() {
        return columnNames.length;
    }

    public int getRowCount() {
        if (messages == null)
            return 0;

        return messages.length;
    }

    public Object getValueAt(int aRow, int aColumn) {
        switch (aColumn) {
        case 0: // date
        case 1: // From      String[] what = getCachedData(aRow);
        case 2: // Subject
            String[] what = getCachedData(aRow);
            if (what != null) {
                return what[aColumn];
            } else {
                return "";
            }

        default:
            return "";
        }
    }

    protected static String[][] cached;

    protected String[] getCachedData(int row) {
        if (cached[row] == null) {
            try {
                Message m = messages[row];

                String[] theData = new String[4];

                // Date
                Date date = m.getSentDate();
                if (date == null) {
                    theData[0] = "Unknown";
                } else {
                    theData[0] = date.toString();
                }

                // From
                Address[] adds = m.getFrom();
                if (adds != null && adds.length != 0) {
                    theData[1] = adds[0].toString();
                } else {
                    theData[1] = "";
                }

                // Subject
                String subject = m.getSubject();
                if (subject != null) {
                    theData[2] = subject;
                } else {
                    theData[2] = "(No Subject)";
                }

                cached[row] = theData;
            } catch (MessagingException e) {
                e.printStackTrace();
            }
        }

        return cached[row];
    }
}