/*******************************************************************************
* Copyright (c) 2008, 2011 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.jdt.internal.ui.filters;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jdt.internal.ui.packageview.PackageFragmentRootContainer;
import org.eclipse.jdt.internal.ui.viewsupport.ProblemTreeViewer;
/**
* The library container filter is a filter used to determine whether
* library containers are shown that are empty or have all children filtered out by other filters.
* The filter is only applicable on a {@link ProblemTreeViewer}
*/
public class EmptyLibraryContainerFilter extends ViewerFilter {
/* (non-Javadoc)
* Method declared on ViewerFilter.
*/
@Override
public boolean select(Viewer viewer, Object parentElement, Object element) {
if (element instanceof PackageFragmentRootContainer && viewer instanceof ProblemTreeViewer) {
return ((ProblemTreeViewer) viewer).hasFilteredChildren(element);
}
return true;
}
}