Vaadin GWT Jetty Launcher

DevModeJettyLauncher.java

/*
 * Copyright 2011 Stanley Shyiko
 *
 * 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 com.github.shyiko.gists.vaadin;

import com.google.gwt.core.ext.ServletContainer;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.dev.shell.jetty.JettyLauncher;

import java.io.File;

/**
 * Provides ability to use GWT hosted mode embedded Jetty server during Vaadin widgets development. Thus,
 * frees from the need to run external server instance.
 * <p/>
 * The name of this class should be specified as an argument to the com.google.gwt.dev.DevMode -server parameter.
 * Also JVM argument -Ddev.mode.app.root should point to web application root directory. That is, if -war parameter
 * points to "WebContent/VAADIN/widgetsets" then -Ddev.mode.app.root should be equal to "WebContent".
 *
 * @author <a href="mailto:stanley.shyiko@gmail.com">shyiko</a>
 * @since 25.06.2011
 */
public class DevModeJettyLauncher extends JettyLauncher {

    @Override
    public ServletContainer start(TreeLogger logger, int port, File appRootDir) throws Exception {
        String devModeAppRoot = System.getProperty("dev.mode.app.root");
        return super.start(logger, port, devModeAppRoot != null ? new File(devModeAppRoot) : appRootDir);
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.github.shyiko.gists</groupId>
    <artifactId>vaadin-gwt-jetty-launcher</artifactId>
    <version>1.0</version>

    <dependencies>
        <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-dev</artifactId>
            <version>2.3.0</version>
        </dependency>
    </dependencies>
</project>