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/*
* Copyright 2011 Vaadin 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 com.vaadin.server;
import java.io.InputStream;
import java.net.URL;
import javax.servlet.ServletContext;
import com.vaadin.Application;
import com.vaadin.external.json.JSONException;
import com.vaadin.ui.UI;
/**
* Application manager processes changes and paints for single application
* instance.
*
* This class handles applications running as servlets.
*
* @see AbstractCommunicationManager
*
* @author Vaadin Ltd.
* @since 5.0
*/
@SuppressWarnings("serial")
public class CommunicationManager extends AbstractCommunicationManager {
/**
* @deprecated use {@link #CommunicationManager(Application)} instead
* @param application
* @param applicationServlet
*/
@Deprecated
public CommunicationManager(Application application,
AbstractApplicationServlet applicationServlet) {
super(application);
}
/**
* TODO New constructor - document me!
*
* @param application
*/
public CommunicationManager(Application application) {
super(application);
}
@Override
protected BootstrapHandler createBootstrapHandler() {
return new BootstrapHandler() {
@Override
protected String getApplicationId(BootstrapContext context) {
String appUrl = getAppUri(context);
String appId = appUrl;
if ("".equals(appUrl)) {
appId = "ROOT";
}
appId = appId.replaceAll("[^a-zA-Z0-9]", "");
// Add hashCode to the end, so that it is still (sort of)
// predictable, but indicates that it should not be used in CSS
// and
// such:
int hashCode = appId.hashCode();
if (hashCode < 0) {
hashCode = -hashCode;
}
appId = appId + "-" + hashCode;
return appId;
}
@Override
protected String getAppUri(BootstrapContext context) {
/* Fetch relative url to application */
// don't use server and port in uri. It may cause problems with
// some
// virtual server configurations which lose the server name
Application application = context.getApplication();
URL url = application.getURL();
String appUrl = url.getPath();
if (appUrl.endsWith("/")) {
appUrl = appUrl.substring(0, appUrl.length() - 1);
}
return appUrl;
}
@Override
public String getThemeName(BootstrapContext context) {
String themeName = context.getRequest().getParameter(
AbstractApplicationServlet.URL_PARAMETER_THEME);
if (themeName == null) {
themeName = super.getThemeName(context);
}
return themeName;
}
@Override
protected String getInitialUIDL(WrappedRequest request, UI uI)
throws PaintException, JSONException {
return CommunicationManager.this.getInitialUIDL(request, uI);
}
};
}
@Override
protected InputStream getThemeResourceAsStream(UI uI, String themeName,
String resource) {
WebApplicationContext context = (WebApplicationContext) uI
.getApplication().getContext();
ServletContext servletContext = context.getHttpSession()
.getServletContext();
return servletContext.getResourceAsStream("/"
+ AbstractApplicationServlet.THEME_DIRECTORY_PATH + themeName
+ "/" + resource);
}
}
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