/*******************************************************************************
* Copyright (c) 2010 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.views;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.mylyn.internal.tasks.core.Category;
/**
* @author Robert Elves
*/
public class EmptyCategoriesFilter extends ViewerFilter {
private final TaskRepositoriesContentProvider provider;
public EmptyCategoriesFilter(TaskRepositoriesContentProvider provider) {
this.provider = provider;
}
@Override
public boolean select(Viewer viewer, Object parentElement, Object element) {
if (element instanceof Category) {
return provider.getChildren(element).length > 0;
}
return true;
}
}