/*******************************************************************************
* Copyright (c) 2000, 2017 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
*
*******************************************************************************/
package org.eclipse.dltk.internal.ui.filters;
import org.eclipse.dltk.core.IScriptFolder;
import org.eclipse.dltk.core.ModelException;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
/**
* filters out all empty package fragments.
*/
public class EmptyPackageFilter extends ViewerFilter {
/**
* Returns the result of this filter, when applied to the
* given inputs.
*
* @return Returns true if element should be included in filtered set
*/
@Override
public boolean select(Viewer viewer, Object parent, Object element) {
if (element instanceof IScriptFolder) {
IScriptFolder pkg= (IScriptFolder)element;
try {
Object[] foreignResources = pkg.getForeignResources();
boolean hasForeign = false;
if( foreignResources != null ) {
hasForeign = foreignResources.length > 0;
}
return pkg.hasChildren() || hasForeign;
} catch (ModelException e) {
return false;
}
}
return true;
}
}