MailsListPane.java
package com.nilhcem.fakesmtp.gui.tab;
import com.nilhcem.fakesmtp.core.ArgsHandler;
import com.nilhcem.fakesmtp.core.Configuration;
import com.nilhcem.fakesmtp.core.I18n;
import com.nilhcem.fakesmtp.gui.info.ClearAllButton;
import com.nilhcem.fakesmtp.model.EmailModel;
import com.nilhcem.fakesmtp.model.UIModel;
import com.nilhcem.fakesmtp.server.MailSaver;
import jakarta.mail.internet.MimeUtility;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import java.awt.Desktop;
import java.awt.Rectangle;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Observable;
import java.util.Observer;
/**
* Scrolled table where will be displayed every received email (one line for each email).
* <p>
* The user can double-click on any row to see the selected email.
* </p>
*
* @author Nilhcem
* @since 1.0
*/
public final class MailsListPane implements Observer {
private int nbElements = 0;
private Desktop desktop = null;
private static final Logger LOGGER = LoggerFactory.getLogger(MailsListPane.class);
private final I18n i18n = I18n.INSTANCE;
private final JScrollPane mailsListPane = new JScrollPane();
private final SimpleDateFormat dateFormat = new SimpleDateFormat("hh:mm:ss a");
private final int[] widths = new int[] {85, 140, 140}; // widths of columns in tab
/**
* Table with non-editable cells.
*/
private final JTable table = new JTable() {
private static final long serialVersionUID = 6332956458868628779L;
@Override
public boolean isCellEditable(int row, int column) {
return false;
}
};
/**
* Table model with non-editable cells.
*/
private final DefaultTableModel model = new DefaultTableModel() {
private static final long serialVersionUID = -6716294637919469299L;
public boolean isCellEditable(int rowIndex, int mColIndex) {
return false;
}
};
/**
* Creates the table and sets its cells as non editable.
* <p>
* Adds some mouse events on the table, to display emails, when a user clicks on
* a specific row.<br>
* If the email can't be found, an error message will be displayed.<br>
* The table will reset the size of its column every time the size of the table changed
* (for example when the user maximizes the window).
* </p>
*/
public MailsListPane() {
// Init desktop (Java 6 Desktop API)
if (Desktop.isDesktopSupported()) {
desktop = Desktop.getDesktop();
}
if (!ArgsHandler.INSTANCE.memoryModeEnabled()) {
table.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
}
@Override
public void mousePressed(MouseEvent e) {
}
@Override
public void mouseExited(MouseEvent e) {
}
@Override
public void mouseEntered(MouseEvent e) {
}
@Override
public void mouseClicked(MouseEvent e) {
String emlViewer = ArgsHandler.INSTANCE.getEmlViewer();
if (e.getClickCount() == 2 && (emlViewer != null || desktop != null)) {
File file = null;
JTable target = (JTable) e.getSource();
String fileName = UIModel.INSTANCE.getListMailsMap().get(target.getSelectedRow());
if (fileName == null) {
LOGGER.error("Can't find any associated email for row #{}", target.getSelectedRow());
} else {
file = new File(fileName);
}
if (file != null && file.exists()) {
try {
if (emlViewer != null) {
Runtime.getRuntime().exec(emlViewer + " " + file.getAbsolutePath());
} else {
desktop.open(file);
}
} catch (IOException ioe) {
LOGGER.error("", ioe);
displayError(String.format(i18n.get("mailslist.err.open"), file.getAbsolutePath()));
}
} else {
displayError(String.format(i18n.get("mailslist.err.find"), file.getAbsolutePath()));
}
}
}
});
}
// Auto scroll tab to bottom when a new element is inserted
table.addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent e) {
table.scrollRectToVisible(new Rectangle(table.getCellRect(nbElements, 0, true)));
}
});
model.addColumn(i18n.get("mailslist.col.received"));
model.addColumn(i18n.get("mailslist.col.from"));
model.addColumn(i18n.get("mailslist.col.to"));
model.addColumn(i18n.get("mailslist.col.subject"));
table.setModel(model);
mailsListPane.addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent e) {
// When the width of a column is changed, only the columns to the left and right of the margin change
table.setAutoResizeMode(JTable.AUTO_RESIZE_NEXT_COLUMN);
// Set width for each column
int total = 0;
int length = widths.length;
for (int i = 0; i < length; i++) {
table.getColumnModel().getColumn(i).setPreferredWidth(widths[i]);
total += widths[i];
}
table.getColumnModel().getColumn(length).setPreferredWidth(table.getWidth() - total);
}
});
mailsListPane.getViewport().add(table, null);
}
/**
* Returns the JScrollPane object.
*
* @return the JScrollPane object.
*/
public JScrollPane get() {
return mailsListPane;
}
/**
* Updates the content of the table.
* <p>
* This method will be called by an observable element.
* </p>
* <ul>
* <li>If the observable is a {@link MailSaver} object, a new row will be added
* to the table, and the {@link UIModel} will be updated;</li>
* <li>If the observable is a {@link ClearAllButton} object, all the cells
* of the table will be removed, and the {@link UIModel} will be updated.</li>
* </ul>
*
* @param o the observable element which will notify this class.
* @param arg optional parameters (an {@code EmailModel} object, for the case of
* a {@code MailSaver} observable) containing all the information about the email.
*/
@Override
public void update(Observable o, Object arg) {
if (o instanceof MailSaver) {
EmailModel email = (EmailModel) arg;
String subject;
try {
subject = MimeUtility.decodeText(email.getSubject());
} catch (UnsupportedEncodingException e) {
LOGGER.error("", e);
subject = email.getSubject();
}
model.addRow(new Object[] {dateFormat.format(email.getReceivedDate()), email.getFrom(), email.getTo(), subject});
UIModel.INSTANCE.getListMailsMap().put(nbElements++, email.getFilePath());
} else if (o instanceof ClearAllButton) {
// Delete information from the map
UIModel.INSTANCE.getListMailsMap().clear();
// Remove elements from the list
try {
while (nbElements > 0) {
model.removeRow(--nbElements);
}
} catch (ArrayIndexOutOfBoundsException e) {
LOGGER.error("", e);
}
}
}
/**
* Displays a message dialog containing the error specified in parameter.
*
* @param error a String representing an error message to display.
*/
private void displayError(String error) {
JOptionPane.showMessageDialog(mailsListPane.getParent(), error,
String.format(i18n.get("mailslist.err.title"), Configuration.INSTANCE.get("application.name")),
JOptionPane.ERROR_MESSAGE);
}
}