/*******************************************************************************
* Copyright (c) 2016 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.navigator;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jdt.internal.ui.packageview.PackageFragmentRootContainer;
/**
* 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.
*/
public class NonEssentialEmptyLibraryContainerFilter extends NonEssentialElementsFilter {
public NonEssentialEmptyLibraryContainerFilter() {
super(null);
}
@Override
protected boolean doSelect(Viewer viewer, Object parent, Object element) {
if (element instanceof PackageFragmentRootContainer) {
if (isApplicable() && viewer instanceof StructuredViewer) {
PackageFragmentRootContainer rootContainer= (PackageFragmentRootContainer) element;
return rootContainer.getChildren().length > 0 ? hasFilteredChildren((StructuredViewer) viewer, rootContainer) : false;
}
}
return true;
}
}