Java tutorial
/* * Copyright 2007 Google Inc. * Copyright (c) 2009 Regents of the University of California, Stanford University, and others * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package org.otalo.ao.client; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.KeyCodes; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.DialogBox; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.VerticalPanel; /** * A simple example of an 'about' dialog box. */ public class AboutDialog extends DialogBox { public AboutDialog() { // Use this opportunity to set the dialog's caption. setText("About the AO admin console"); // Create a VerticalPanel to contain the 'about' label and the 'OK' button. VerticalPanel outer = new VerticalPanel(); // Create the 'about' text and set a style name so we can style it with CSS. HTML text = new HTML("TODO"); text.setStyleName("mail-AboutText"); outer.add(text); // Create the 'OK' button, along with a handler that hides the dialog // when the button is clicked. outer.add(new Button("Close", new ClickHandler() { public void onClick(ClickEvent event) { hide(); } })); setWidget(outer); } @Override public boolean onKeyDownPreview(char key, int modifiers) { // Use the popup's key preview hooks to close the dialog when either // enter or escape is pressed. switch (key) { case KeyCodes.KEY_ENTER: case KeyCodes.KEY_ESCAPE: hide(); break; } return true; } }