org.eclipse.osbp.utils/src/org/eclipse/osbp/utils/session/UriPath.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * All rights reserved. This program and the accompanying materials           
 * are made available under the terms of the Eclipse Public License 2.0        
 * which accompanies this distribution, and is available at                  
 * https://www.eclipse.org/legal/epl-2.0/                                 
 *                                 
 * SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 * Contributors:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.utils.session;

import java.net.URI;

import org.osgi.framework.FrameworkUtil;

import com.vaadin.server.Page;
import com.vaadin.server.VaadinService;

public class UriPath {

	/**
	 * @return the theme name of the current vaadin application, which can be used inside a uri
	 */
	public static String getThemeName() {
		try {
			return VaadinService.getCurrent().getConfiguredTheme(VaadinService.getCurrentRequest());
		}
		catch (Exception e) {
			return null;
		}
	}

	/**
	 * @return [<code>protocol</code>]<code>://</code>[<code>host</code>](<code>:</code>[<code>port</code>])
	 */
	public static String getProtocolHostPort() {
		URI location = Page.getCurrent().getLocation();
		String retcode = location.getScheme() + "://" +location.getHost();
		if	(location.getPort() > 0) {
			retcode += ":"+location.getPort();
		}
		return retcode;
	}
	
	/**
	 * see also {@link #getAbsoluteBasicResourceUri(String)
	 * @param classInBundle a class residing in the bundle 
	 * @return the absolute basic resource uri, which can be used by a browser <b><u>without</u> the protocol, host and port</b>
	 */
	public static String getAbsoluteBasicResourceUri(Class<?> classInBundle) {
		try {
			return getAbsoluteBasicResourceUri(FrameworkUtil.getBundle(classInBundle).getSymbolicName());
		}
		catch (Exception e) {
			return null;
		}
	}
	
	/**
	 * see also {@link #getAbsoluteBasicResourceUri(String, Class)<br>
	 * The absolute basic uri defined by the bundle given will be generated!
	 * @param symbolicBundleName the symbolic bundle name, where the requested resource should reside 
	 * @return the absolute uri, which can be used by a browser
	 */
	public static String getAbsoluteBasicResourceUri(String symbolicBundleName) {
		try {
			return
				getProtocolHostPort() +
				VaadinService.getCurrentRequest().getContextPath() +
				"/VAADIN/themes/" +
				getThemeName() +
				"/plugin/" +
				symbolicBundleName +
				"/";
		}
		catch (Exception e) {
			return null;
		}
	}
}