Java tutorial
/* * Copyright 2009 IT Mill Ltd. * * 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.pax.vaadin.samples.simple.app; import com.vaadin.Application; import com.vaadin.terminal.Terminal; import com.vaadin.terminal.ThemeResource; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Label; import com.vaadin.ui.Window; import java.util.Date; /** * The Application's "main" class */ @SuppressWarnings("serial") public class MyVaadinApplication extends Application { private Window window; @Override public void init() { window = new Window("My Vaadin Application"); setMainWindow(window); // Click & Fails Me buttons Button clickButton = new Button("Click Me"); Button failsButton = new Button("Fail Me"); // Notification displayed when click button is called final Window.Notification notif = new Window.Notification("The time is " + new Date(), Window.Notification.TYPE_WARNING_MESSAGE); // Notification position. notif.setPosition(Window.Notification.POSITION_CENTERED_BOTTOM); // Add a listener on Click button clickButton.addListener(new Button.ClickListener() { public void buttonClick(ClickEvent event) { window.addComponent(new Label("Thank you for clicking")); window.showNotification(notif); } }); // Add a listener for Fails button failsButton.addListener(new Button.ClickListener() { public void buttonClick(ClickEvent event) { // Throw some exception. throw new RuntimeException("You can't catch this."); } }); window.addComponent(clickButton); window.addComponent(failsButton); } @Override public void terminalError(Terminal.ErrorEvent event) { // Call the default implementation. super.terminalError(event); // Some custom behaviour. if (getMainWindow() != null) { getMainWindow().showNotification("An unchecked exception occured!", event.getThrowable().toString(), Window.Notification.TYPE_ERROR_MESSAGE); } } }