LibraryFilter.java

/**
 * Copyright (c) 2008 Aptana, Inc.
 *
 * 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. If redistributing this code,
 * this entire header must remain intact.
 *
 * This file is based on a JDT equivalent:
 ********************************************************************************
 * Copyright (c) 2000, 2005 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.rubypeople.rdt.internal.ui.filters;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.rubypeople.rdt.core.ISourceFolderRoot;
import org.rubypeople.rdt.internal.ui.packageview.LoadPathContainer;


/**
 * The LibraryFilter is a filter used to determine whether
 * a Ruby library is shown
 */
public class LibraryFilter extends ViewerFilter {
	
	/* (non-Javadoc)
	 * Method declared on ViewerFilter.
	 */
	public boolean select(Viewer viewer, Object parentElement, Object element) {
		if (element instanceof LoadPathContainer)
			return false;
		if (element instanceof ISourceFolderRoot) {
			ISourceFolderRoot root= (ISourceFolderRoot)element;
			if (root.isExternal()) {
				return false;
			}
		}
		return true;
	}
}