content: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.workingsets;
  
  import org.eclipse.core.resources.IProject;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.wst.jsdt.core.IJavaScriptModel;
  import org.eclipse.wst.jsdt.core.IPackageFragment;
  import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
  import org.eclipse.wst.jsdt.core.JavaScriptModelException;
  import org.eclipse.wst.jsdt.ui.StandardJavaScriptElementContentProvider;
  
  class JavaWorkingSetPageContentProvider extends StandardJavaScriptElementContentProvider {
  	
  	public boolean hasChildren(Object element) {
  
  		if (element instanceof IProject && !((IProject)element).isAccessible())
  			return false;
  
  		if (element instanceof IPackageFragment) {
  			IPackageFragment pkg= (IPackageFragment)element;
  			try {
  				if (pkg.getKind() == IPackageFragmentRoot.K_BINARY)
  					return pkg.getChildren().length > 0;
  			} catch (JavaScriptModelException ex) {
  				// use super behavior
  			}
  		}
  		return super.hasChildren(element);
  	}
  
  	public Object[] getChildren(Object parentElement) {
  		try {
  			if (parentElement instanceof IJavaScriptModel) 
  				return concatenate(super.getChildren(parentElement), getNonJavaProjects((IJavaScriptModel)parentElement));
  			
  			if (parentElement instanceof IProject) 
  				return ((IProject)parentElement).members();
  
  			return super.getChildren(parentElement);
  		} catch (CoreException e) {
  			return NO_CHILDREN;
  		}
  	}
  
  	private Object[] getNonJavaProjects(IJavaScriptModel model) throws JavaScriptModelException {
  		return model.getNonJavaScriptResources();
  	}
  }
  