ExplorerApplicationServlet.java example

Explorer
jenkow-plugin-master
/* 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.activiti.explorer.servlet;

import java.io.BufferedWriter;
import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;

import org.activiti.explorer.ExplorerApp;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import com.vaadin.Application;
import com.vaadin.terminal.gwt.server.AbstractApplicationServlet;
import com.vaadin.ui.Window;

/**
 * Servlet providing Activiti and Spring integration with Vaadin
 * 
 * @author Patrick Oberg
 * @author Joram Barrez
 */
public class ExplorerApplicationServlet extends AbstractApplicationServlet {

  private static final long serialVersionUID = 1L;
  
  protected WebApplicationContext applicationContext;

  @Override
  public void init(ServletConfig servletConfig) throws ServletException {
    super.init(servletConfig);
    applicationContext = WebApplicationContextUtils.getWebApplicationContext(servletConfig.getServletContext());
  }

  @Override
  protected Class< ? extends Application> getApplicationClass() throws ClassNotFoundException {
    return ExplorerApp.class;
  }

  @Override
  protected Application getNewApplication(HttpServletRequest request) {
    return (Application) applicationContext.getBean(ExplorerApp.class);
  }
  
  @Override
  protected void writeAjaxPageHtmlVaadinScripts(Window window, String themeName, Application application, BufferedWriter page, String appUrl, String themeUri,
          String appId, HttpServletRequest request) throws ServletException, IOException {
    super.writeAjaxPageHtmlVaadinScripts(window, themeName, application, page, appUrl, themeUri, appId, request);
    
    // Add static JS files
    String scrollJs = themeUri + "/js/vscrollarea.js";
    page.write("<script type=\"text/javascript\" src=\"" + scrollJs + "\" />");
    
    String browserDependentCss = "<script type=\"text/javascript\">//<![CDATA[" +
      "var mobi = ['opera', 'iemobile', 'webos', 'android', 'blackberry', 'ipad', 'safari'];" +
      "var midp = ['blackberry', 'symbian'];" +
      "var ua = navigator.userAgent.toLowerCase();" +
      "if ((ua.indexOf('midp') != -1) || (ua.indexOf('mobi') != -1) || ((ua.indexOf('ppc') != -1) && (ua.indexOf('mac') == -1)) || (ua.indexOf('webos') != -1)) {" +
      "  document.write('<link rel=\"stylesheet\" href=\"" + themeUri +"/allmobile.css\" type=\"text/css\" media=\"all\"/>');" +
      "  if (ua.indexOf('midp') != -1) {" +
      "    for (var i = 0; i < midp.length; i++) {" +
      "      if (ua.indexOf(midp[i]) != -1) {" +
      "        document.write('<link rel=\"stylesheet\" href=\"" + themeUri +"' + midp[i] + '.css\" type=\"text/css\"/>');" +
      "      }" +
      "    }"+
      "  }" +
     "   else {"+
     "     if ((ua.indexOf('mobi') != -1) || (ua.indexOf('ppc') != -1) || (ua.indexOf('webos') != -1)) {" +
     "       for (var i = 0; i < mobi.length; i++) {" +
     "         if (ua.indexOf(mobi[i]) != -1) {" +
     "           if ((mobi[i].indexOf('blackberry') != -1) && (ua.indexOf('6.0') != -1)) {" +
     "             document.write('<link rel=\"stylesheet\" href=\"" + themeUri + "' + mobi[i] + '6.0.css\" type=\"text/css\"/>');" +
     "           }" +
     "           else {" +
     "             document.write('<link rel=\"stylesheet\" href=\"" + themeUri + "' + mobi[i] + '.css\" type=\"text/css\"/>');" +
     "           }" +
     "          break;" +
     "         }" +
     "       }" +
     "     }" +
     "   }" +
     " }" +
     "if ((navigator.userAgent.indexOf('iPhone') != -1) || (navigator.userAgent.indexOf('iPad') != -1)) {" +
     " document.write('<meta name=\"viewport\" content=\"width=device-width\" />');" +
    "}" +
    "  //]]>" +
    "</script>" +
    "<!--[if lt IE 7]><link rel=\"stylesheet\" type=\"text/css\" href=\"" + themeUri + "/lt7.css\" /><![endif]-->";
    
    page.write(browserDependentCss);
  }
}