Java tutorial
/** * DataCleaner (community edition) * Copyright (C) 2014 Neopost - Customer Information Management * * This copyrighted material is made available to anyone wishing to use, modify, * copy, or redistribute it subject to the terms and conditions of the GNU * Lesser General Public License, as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License * for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this distribution; if not, write to: * Free Software Foundation, Inc. * 51 Franklin Street, Fifth Floor * Boston, MA 02110-1301 USA */ package org.eobjects.datacleaner.windows; import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.InputStream; import java.util.Map; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JOptionPane; import javax.swing.JPasswordField; import javax.swing.border.EmptyBorder; import javax.swing.event.DocumentEvent; import org.apache.http.HttpResponse; import org.apache.http.StatusLine; import org.apache.http.client.methods.HttpGet; import org.apache.metamodel.util.FileHelper; import org.eobjects.analyzer.util.StringUtils; import org.eobjects.datacleaner.bootstrap.DCWindowContext; import org.eobjects.datacleaner.bootstrap.WindowContext; import org.eobjects.datacleaner.panels.DCPanel; import org.eobjects.datacleaner.user.MonitorConnection; import org.eobjects.datacleaner.user.UserPreferences; import org.eobjects.datacleaner.user.UserPreferencesImpl; import org.eobjects.datacleaner.util.DCDocumentListener; import org.eobjects.datacleaner.util.ImageManager; import org.eobjects.datacleaner.util.LookAndFeelManager; import org.eobjects.datacleaner.util.MonitorHttpClient; import org.eobjects.datacleaner.util.NumberDocument; import org.eobjects.datacleaner.util.SecurityUtils; import org.eobjects.datacleaner.util.WidgetFactory; import org.eobjects.datacleaner.util.WidgetUtils; import org.eobjects.datacleaner.widgets.DCCheckBox; import org.eobjects.datacleaner.widgets.DCCheckBox.Listener; import org.eobjects.datacleaner.widgets.DCLabel; import org.eobjects.datacleaner.widgets.DescriptionLabel; import org.jdesktop.swingx.JXTextField; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.fasterxml.jackson.databind.ObjectMapper; import com.google.inject.Inject; /** * Dialog for setting up the users connection to the DataCleaner monitor webapp. */ public class MonitorConnectionDialog extends AbstractDialog { private static final long serialVersionUID = 1L; private static final Logger logger = LoggerFactory.getLogger(MonitorConnectionDialog.class); private static final ImageManager imageManager = ImageManager.get(); private final UserPreferences _userPreferences; private final DCCheckBox<Void> _httpsCheckBox; private final JXTextField _hostnameTextField; private final JXTextField _portTextField; private final JXTextField _contextPathTextField; private final JXTextField _tenantTextField; private final DCCheckBox<Void> _authenticationCheckBox; private final JXTextField _usernameTextField; private final JPasswordField _passwordTextField; private final DCLabel _urlLabel; @Inject public MonitorConnectionDialog(WindowContext windowContext, UserPreferences userPreferences) { super(windowContext, imageManager.getImage("images/window/banner-dq-monitor.png")); _userPreferences = userPreferences; final MonitorConnection monitorConnection = _userPreferences.getMonitorConnection(); _urlLabel = DCLabel.bright(""); _urlLabel.setForeground(WidgetUtils.BG_COLOR_LESS_BRIGHT); _urlLabel.setBorder(new EmptyBorder(0, 0, 25, 0)); _httpsCheckBox = new DCCheckBox<Void>("Use HTTPS?", false); if (monitorConnection != null && monitorConnection.isHttps()) { _httpsCheckBox.setSelected(true); } _httpsCheckBox.setBorderPainted(false); _httpsCheckBox.setOpaque(false); _httpsCheckBox.setForeground(WidgetUtils.BG_COLOR_BRIGHTEST); _httpsCheckBox.addListener(new Listener<Void>() { @Override public void onItemSelected(Void item, boolean selected) { updateUrlLabel(); } }); _hostnameTextField = WidgetFactory.createTextField("Hostname"); if (monitorConnection != null && monitorConnection.getHostname() != null) { _hostnameTextField.setText(monitorConnection.getHostname()); } else { _hostnameTextField.setText("localhost"); } _hostnameTextField.getDocument().addDocumentListener(new DCDocumentListener() { @Override protected void onChange(DocumentEvent event) { updateUrlLabel(); } }); _portTextField = WidgetFactory.createTextField("Port"); _portTextField.setDocument(new NumberDocument(false)); if (monitorConnection != null) { _portTextField.setText(monitorConnection.getPort() + ""); } else { _portTextField.setText("8080"); } _portTextField.getDocument().addDocumentListener(new DCDocumentListener() { @Override protected void onChange(DocumentEvent event) { updateUrlLabel(); } }); _contextPathTextField = WidgetFactory.createTextField("Context path"); if (monitorConnection != null) { _contextPathTextField.setText(monitorConnection.getContextPath()); } else { _contextPathTextField.setText("DataCleaner-monitor"); } _contextPathTextField.getDocument().addDocumentListener(new DCDocumentListener() { @Override protected void onChange(DocumentEvent event) { updateUrlLabel(); } }); _tenantTextField = WidgetFactory.createTextField("Tenant ID"); if (monitorConnection != null) { _tenantTextField.setText(monitorConnection.getTenantId()); } else { _tenantTextField.setText("DC"); } _tenantTextField.getDocument().addDocumentListener(new DCDocumentListener() { @Override protected void onChange(DocumentEvent event) { updateUrlLabel(); } }); _usernameTextField = WidgetFactory.createTextField("Username"); _passwordTextField = WidgetFactory.createPasswordField(); _authenticationCheckBox = new DCCheckBox<Void>("Use authentication?", true); _authenticationCheckBox.setBorderPainted(false); _authenticationCheckBox.setOpaque(false); _authenticationCheckBox.setForeground(WidgetUtils.BG_COLOR_BRIGHTEST); _authenticationCheckBox.addListener(new Listener<Void>() { @Override public void onItemSelected(Void item, boolean selected) { _usernameTextField.setEnabled(selected); _passwordTextField.setEnabled(selected); } }); if (monitorConnection != null && monitorConnection.isAuthenticationEnabled()) { _authenticationCheckBox.setSelected(true); final String username = monitorConnection.getUsername(); _usernameTextField.setText(username); final String decodedPassword = SecurityUtils.decodePassword(monitorConnection.getEncodedPassword()); _passwordTextField.setText(decodedPassword); } else { _authenticationCheckBox.setSelected(false); } updateUrlLabel(); } public MonitorConnection createMonitorConnection() { int port = 8080; try { port = Integer.parseInt(_portTextField.getText()); } catch (NumberFormatException e) { // do nothing, fall back to 8080. } final String username; final char[] password; if (_authenticationCheckBox.isSelected()) { username = _usernameTextField.getText(); password = _passwordTextField.getPassword(); } else { username = null; password = null; } return new MonitorConnection(_userPreferences, _hostnameTextField.getText(), port, _contextPathTextField.getText(), _httpsCheckBox.isSelected(), _tenantTextField.getText(), username, password); } private void updateUrlLabel() { final MonitorConnection monitorConnection = createMonitorConnection(); _urlLabel.setText("Repository url: " + monitorConnection.getRepositoryUrl()); } @Override public String getWindowTitle() { return "DataCleaner monitor connection"; } @Override protected String getBannerTitle() { return "DataCleaner monitor\nSet up connection"; } @Override protected int getDialogWidth() { return 500; } @Override public boolean isResizable() { return true; } @Override protected JComponent getDialogContent() { final DCPanel formPanel = new DCPanel(); int row = 0; WidgetUtils.addToGridBag(DCLabel.bright("Hostname:"), formPanel, 0, row); WidgetUtils.addToGridBag(_hostnameTextField, formPanel, 1, row); row++; WidgetUtils.addToGridBag(DCLabel.bright("Port:"), formPanel, 0, row); WidgetUtils.addToGridBag(_portTextField, formPanel, 1, row); row++; WidgetUtils.addToGridBag(DCLabel.bright("Context path:"), formPanel, 0, row); WidgetUtils.addToGridBag(_contextPathTextField, formPanel, 1, row); row++; WidgetUtils.addToGridBag(_httpsCheckBox, formPanel, 1, row); row++; WidgetUtils.addToGridBag(DCLabel.bright("Tenant ID:"), formPanel, 0, row); WidgetUtils.addToGridBag(_tenantTextField, formPanel, 1, row); row++; WidgetUtils.addToGridBag(_urlLabel, formPanel, 0, row, 2, 1); row++; WidgetUtils.addToGridBag(_authenticationCheckBox, formPanel, 1, row); row++; WidgetUtils.addToGridBag(DCLabel.bright("Username:"), formPanel, 0, row); WidgetUtils.addToGridBag(_usernameTextField, formPanel, 1, row); row++; WidgetUtils.addToGridBag(DCLabel.bright("Password:"), formPanel, 0, row); WidgetUtils.addToGridBag(_passwordTextField, formPanel, 1, row); formPanel.setBorder(WidgetUtils.BORDER_EMPTY); final JButton testButton = WidgetFactory.createButton("Test connection", "images/actions/refresh.png"); testButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent event) { final MonitorConnection connection = createMonitorConnection(); final String pingUrl = connection.getRepositoryUrl() + "/ping"; final HttpGet request = new HttpGet(pingUrl); try (final MonitorHttpClient monitorHttpClient = connection.getHttpClient()) { final HttpResponse response = monitorHttpClient.execute(request); final StatusLine statusLine = response.getStatusLine(); if (statusLine.getStatusCode() == 200 || statusLine.getStatusCode() == 201) { // read response as JSON. final InputStream content = response.getEntity().getContent(); final Map<?, ?> map; try { map = new ObjectMapper().readValue(content, Map.class); } finally { FileHelper.safeClose(content); } logger.info("Ping request responded: {}", map); JOptionPane.showMessageDialog(MonitorConnectionDialog.this, "Connection successful!"); } else { final String reasonPhrase = statusLine.getReasonPhrase(); WidgetUtils.showErrorMessage("Server reported error", "Server replied with status " + statusLine.getStatusCode() + ":\n" + reasonPhrase); } } catch (Exception e) { // TODO: This dialog is shown behind the modal dialog WidgetUtils.showErrorMessage("Connection failed", "Connecting to DataCleaner monitor failed. Did you remember to fill in all the nescesary fields?", e); } } }); final JButton saveButton = WidgetFactory.createButton("Save connection", "images/actions/save.png"); saveButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { final MonitorConnection monitorConnection = createMonitorConnection(); _userPreferences.setMonitorConnection(monitorConnection); MonitorConnectionDialog.this.close(); } }); final DCPanel buttonPanel = new DCPanel(); buttonPanel.setBorder(WidgetUtils.BORDER_EMPTY); buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT, 4, 0)); buttonPanel.add(testButton); buttonPanel.add(saveButton); final DescriptionLabel descriptionLabel = new DescriptionLabel(); descriptionLabel.setText( "The DataCleaner monitor is a separate web application that is part of the DataCleaner eco-system. " + "In this dialog you can configure your connection to it. " + "With the monitor you can create, share, monitor and govern current and historic data quality metrics. " + "You can also set up alerts to react when certain metrics are out of their expected ranges."); final DCPanel panel = new DCPanel(); panel.setLayout(new BorderLayout()); panel.add(descriptionLabel, BorderLayout.NORTH); panel.add(formPanel, BorderLayout.CENTER); panel.add(buttonPanel, BorderLayout.SOUTH); panel.setPreferredSize(getDialogWidth(), 400); return panel; } @Override protected void initialize() { super.initialize(); // set focus to password field if username field is already filled if (!StringUtils.isNullOrEmpty(_usernameTextField.getText())) { _passwordTextField.setBorder(WidgetUtils.BORDER_EMPHASIZE_FIELD); boolean focused = _passwordTextField.requestFocusInWindow(); assert focused; } } public static void main(String[] args) { LookAndFeelManager.get().init(); UserPreferences userPreferences = new UserPreferencesImpl(null); WindowContext windowContext = new DCWindowContext(null, userPreferences, null); MonitorConnectionDialog dialog = new MonitorConnectionDialog(windowContext, userPreferences); dialog.open(); } /** * Shows a dialog in blocking mode. Only to be used for very * important/blocking behaviour. * * Note that this way of displaying a dialog is not preferred since * unexpected exceptions cannot be caught for modal dialogs. */ public void openBlocking() { // show modal dialog, this will block until // closed. setModal(true); setAlwaysOnTop(true); open(); } }