Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 com.mcparland.john; /* * #%L * Chapter 2: Navigator * %% * Copyright (C) 2014 John McParland * %% * 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. * #L% */ import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent; import com.vaadin.ui.Label; import com.vaadin.ui.VerticalLayout; /** * View to display orders. * * @author John McParland * */ @SuppressWarnings("serial") public class OrdersView extends VerticalLayout implements View { /** * Name of this view. */ public static final String VIEW_NAME = "orders"; /** * Create a OrdersView. * */ public OrdersView() { addComponent(new Label("Orders: ")); } /* * (non-Javadoc) * * @see * com.vaadin.navigator.View#enter(com.vaadin.navigator.ViewChangeListener * .ViewChangeEvent) */ @Override public void enter(ViewChangeEvent event) { // If you need to connect to db or otherwise customise upon navigation, // do it here rather than in the constructor. // Do fun stuff with parameters String params = event.getParameters(); addComponent(new Label("Params: " + params)); } }