package org.argeo.cms.ui.util;
   
   import java.io.IOException;
   import java.io.InputStream;
   import java.net.URL;
   
   import org.argeo.cms.CmsException;
   import org.eclipse.rap.rwt.service.ResourceLoader;
   import org.osgi.framework.Bundle;
  
  /** {@link ResourceLoader} implementation wrapping an {@link Bundle}. */
  public class BundleResourceLoader implements ResourceLoader {
  	private final Bundle bundle;
  
  	public BundleResourceLoader(Bundle bundle) {
  		this.bundle = bundle;
  	}
  
  	@Override
  	public InputStream getResourceAsStream(String resourceName) throws IOException {
  		URL res = bundle.getEntry(resourceName);
  		if (res == null) {
  			res = bundle.getResource(resourceName);
  			if (res == null)
  				throw new CmsException("Resource " + resourceName + " not found in bundle " + bundle.getSymbolicName());
  		}
  		return res.openStream();
  	}
  
  	public Bundle getBundle() {
  		return bundle;
  	}
  
  }