Java tutorial
/** * VibrateSettings.java (Vibrate) * * Copyright 2013 Vaadin Ltd, Sami Viitanen <alump@vaadin.org> * * 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.vaadin.alump.vibrate.demo; import com.vaadin.server.BootstrapFragmentResponse; import com.vaadin.server.BootstrapListener; import com.vaadin.server.BootstrapPageResponse; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; /** * BootstrapListener that injects required parts to HTML document given to client */ public class VibrateSettings implements BootstrapListener { @Override public void modifyBootstrapFragment(BootstrapFragmentResponse response) { // nada } @Override public void modifyBootstrapPage(BootstrapPageResponse response) { Document doc = response.getDocument(); Element head = doc.getElementsByTag("head").get(0); // Inject viewport meta tag Element element = doc.createElement("meta"); element.attr("name", "viewport"); element.attr("content", "width=320, user-scalable=no"); head.appendChild(element); } }