Java tutorial
/*! * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software * Foundation. * * You should have received a copy of the GNU Lesser General Public License along with this * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html * or from the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * 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. * * Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved. */ package org.pentaho.mantle.client.admin; import org.pentaho.gwt.widgets.client.dialogs.MessageDialogBox; import org.pentaho.gwt.widgets.client.utils.string.StringUtils; import org.pentaho.mantle.client.messages.Messages; import org.pentaho.ui.xul.gwt.tags.GwtDialog; import org.pentaho.ui.xul.gwt.tags.GwtMessageBox; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.KeyUpEvent; import com.google.gwt.event.dom.client.KeyUpHandler; import com.google.gwt.http.client.Request; import com.google.gwt.http.client.RequestBuilder; import com.google.gwt.http.client.RequestCallback; import com.google.gwt.http.client.RequestException; import com.google.gwt.http.client.Response; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.Panel; import com.google.gwt.user.client.ui.PasswordTextBox; import com.google.gwt.user.client.ui.SimplePanel; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.VerticalPanel; public class UserDialog extends GwtDialog { private UserRolesAdminPanelController controller; private TextBox nameTextBox; private PasswordTextBox passwordTextBox; private PasswordTextBox reTypePasswordTextBox; private Button acceptBtn = new Button(Messages.getString("ok")); private Button cancelBtn = new Button(Messages.getString("cancel")); public UserDialog(UserRolesAdminPanelController controller) { setWidth(260); setHeight(220); getButtonPanel(); setTitle(Messages.getString("newUser")); acceptBtn.setEnabled(false); nameTextBox = new TextBox(); nameTextBox.setWidth("240px"); passwordTextBox = new PasswordTextBox(); passwordTextBox.setWidth("240px"); reTypePasswordTextBox = new PasswordTextBox(); reTypePasswordTextBox.setWidth("240px"); TextBoxValueChangeHandler textBoxChangeHandler = new TextBoxValueChangeHandler(); nameTextBox.addKeyUpHandler(textBoxChangeHandler); passwordTextBox.addKeyUpHandler(textBoxChangeHandler); reTypePasswordTextBox.addKeyUpHandler(textBoxChangeHandler); acceptBtn.setStylePrimaryName("pentaho-button"); acceptBtn.addClickHandler(new AcceptListener()); cancelBtn.setStylePrimaryName("pentaho-button"); cancelBtn.addClickHandler(new CancelListener()); this.controller = controller; } public Panel getButtonPanel() { HorizontalPanel hp = new HorizontalPanel(); hp.add(acceptBtn); hp.setCellWidth(acceptBtn, "100%"); hp.setCellHorizontalAlignment(acceptBtn, HorizontalPanel.ALIGN_RIGHT); hp.add(cancelBtn); return hp; } public Panel getDialogContents() { HorizontalPanel hp = new HorizontalPanel(); SimplePanel hspacer = new SimplePanel(); hspacer.setWidth("10px"); hp.add(hspacer); VerticalPanel vp = new VerticalPanel(); hp.add(vp); SimplePanel vspacer = new SimplePanel(); vspacer.setHeight("10px"); vp.add(vspacer); Label nameLabel = new Label(Messages.getString("userName") + ":"); vp.add(nameLabel); vp.add(nameTextBox); Label passwordLabel = new Label(Messages.getString("password") + ":"); vp.add(passwordLabel); vp.add(passwordTextBox); Label reTypePasswordLabel = new Label(Messages.getString("retypePassword") + ":"); vp.add(reTypePasswordLabel); vp.add(reTypePasswordTextBox); return hp; } private boolean isValidName(String name, String reservedSymbols) { return !StringUtils.containsAnyChars(name, reservedSymbols); } private void showErrorMessage(String userName, String reservedCharacters) { GwtMessageBox messageBox = new GwtMessageBox(); messageBox.setTitle(Messages.getString("error")); messageBox.setMessage(Messages.getString("prohibitedNameSymbols", userName, reservedCharacters)); messageBox.setButtons(new Object[GwtMessageBox.ACCEPT]); messageBox.setWidth(300); messageBox.show(); } private void performSave() throws RequestException { String url = GWT.getHostPageBaseURL() + "api/repo/files/reservedCharacters"; RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.GET, url); requestBuilder.sendRequest("", new RequestCallback() { @Override public void onResponseReceived(Request request, Response response) { String userName = nameTextBox.getText(); String password = passwordTextBox.getText(); String reservedCharacters = response.getText(); if (isValidName(userName, reservedCharacters)) { controller.saveUser(userName, password); hide(); } else { showErrorMessage(userName, reservedCharacters); } } @Override public void onError(Request request, Throwable exception) { hide(); } }); } class AcceptListener implements ClickHandler { public void onClick(ClickEvent event) { try { performSave(); } catch (RequestException e) { MessageDialogBox dialogBox = new MessageDialogBox(Messages.getString("error"), e.toString(), //$NON-NLS-1$ false, false, true); dialogBox.center(); } } } class CancelListener implements ClickHandler { public void onClick(ClickEvent event) { hide(); } } class TextBoxValueChangeHandler implements KeyUpHandler { public void onKeyUp(KeyUpEvent evt) { String name = nameTextBox.getText(); String password = passwordTextBox.getText(); String reTypePassword = reTypePasswordTextBox.getText(); boolean isEnabled = !StringUtils.isEmpty(name) && !StringUtils.isEmpty(password) && password.equals(reTypePassword); acceptBtn.setEnabled(isEnabled); } } }