Java tutorial
/** * Warlock, the open-source cross-platform game client * * Copyright 2008, Warlock LLC, and individual contributors as indicated * by the @authors tag. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software 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 software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package cc.warlock.rcp.stormfront.ui.prefs; import java.io.IOException; import java.util.List; import java.util.Map; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.resource.JFaceColors; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import cc.warlock.core.stormfront.network.ISGEConnectionListener; import cc.warlock.core.stormfront.network.ISGEGame; import cc.warlock.core.stormfront.network.SGEConnection; import cc.warlock.rcp.stormfront.ui.util.LoginUtil; import cc.warlock.rcp.ui.TextField; public class AccountEditDialog extends Dialog { private static int TEST_ACCOUNT = 3; private String username, password; private TextField usernameField; private TextField passwordField; private Label statusLabel; public AccountEditDialog(Shell parentShell) { super(parentShell); } public AccountEditDialog(Shell parentShell, String username, String password) { this(parentShell); this.username = username; this.password = password; } @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); if (username == null) newShell.setText("Add a new account"); else newShell.setText("Update an existing account"); } @Override protected Control createDialogArea(Composite parent) { Composite main = new Composite(parent, SWT.NONE); main.setLayout(new GridLayout(2, false)); main.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); Label banner = new Label(main, SWT.NONE); GridData data = new GridData(SWT.FILL, SWT.FILL, true, false); data.horizontalSpan = 2; banner.setLayoutData(data); if (username == null) { banner.setText("Add a new account"); } else { banner.setText("Update an existing account"); } banner.setFont(JFaceResources.getHeaderFont()); new Label(main, SWT.NONE).setText("Username:"); usernameField = new TextField(main, SWT.BORDER); usernameField.getTextControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); ModifyListener listener = new ModifyListener() { public void modifyText(ModifyEvent e) { if (getButton(OK) != null) { getButton(OK).setEnabled(false); statusLabel.setText(""); } } }; usernameField.getTextControl().addModifyListener(listener); if (username != null) usernameField.getTextControl().setText(username); new Label(main, SWT.NONE).setText("Password:"); passwordField = new TextField(main, SWT.BORDER); passwordField.getTextControl().setEchoChar('*'); passwordField.getTextControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); passwordField.getTextControl().addModifyListener(listener); if (password != null) passwordField.getTextControl().setText(password); statusLabel = new Label(main, SWT.NONE); data = new GridData(SWT.FILL, SWT.FILL, true, false); data.horizontalSpan = 2; statusLabel.setLayoutData(data); // statusLabel.setFont(JFaceResources.getBannerFont()); return main; } @Override protected void createButtonsForButtonBar(Composite parent) { createButton(parent, TEST_ACCOUNT, "Test Account", true); createButton(parent, OK, "OK", false); createButton(parent, CANCEL, "Cancel", false); if (username == null) getButton(OK).setEnabled(false); } protected static class AccountVerifier implements ISGEConnectionListener { private String username, password; private boolean verified, verifying; private int errorCode; public AccountVerifier(String username, String password) { this.username = username; this.password = password; verified = false; verifying = true; SGEConnection connection = new SGEConnection(); connection.setRetrieveGameInfo(false); connection.addSGEConnectionListener(this); connection.connect(); } @Override public void loginReady(SGEConnection connection) { connection.login(username, password); } @Override public void sgeError(SGEConnection connection, int errorCode) { this.errorCode = errorCode; verified = false; verifying = false; try { connection.disconnect(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public void loginFinished(SGEConnection connection) { verified = true; verifying = false; try { connection.disconnect(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public boolean verify() { while (verifying) { try { Thread.sleep((long) 300); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return verified; } public int getErrorCode() { return errorCode; } @Override public void gamesReady(SGEConnection connection, List<? extends ISGEGame> games) { // TODO Auto-generated method stub } @Override public void charactersReady(SGEConnection connection, Map<String, String> characters) { // TODO Auto-generated method stub } @Override public void readyToPlay(SGEConnection connection, Map<String, String> loginProperties) { // TODO Auto-generated method stub } } @Override protected void buttonPressed(int buttonId) { if (buttonId == TEST_ACCOUNT) { AccountVerifier verifier = new AccountVerifier(usernameField.getText(), passwordField.getText()); boolean verified = verifier.verify(); if (!verified) { statusLabel.setBackground(JFaceColors.getErrorBackground(getShell().getDisplay())); statusLabel.setForeground(JFaceColors.getErrorText(getShell().getDisplay())); String loginError = LoginUtil.getAuthenticationError(verifier.getErrorCode()); statusLabel.setText(loginError); getButton(OK).setEnabled(false); } else { statusLabel.setBackground(getShell().getBackground()); statusLabel.setForeground(new Color(getShell().getDisplay(), 0, 128, 0)); statusLabel.setText("Succesfully logged in to the server"); getButton(OK).setEnabled(true); } } else { super.buttonPressed(buttonId); } } public String getUsername() { return usernameField.getText(); } public String getPassword() { return passwordField.getText(); } }