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Java > Open Source Codes > org > eclipse > jdt > internal > ui > filters > EmptyInnerPackageFilter


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jdt.internal.ui.filters;
12
13
14 import org.eclipse.jface.viewers.Viewer;
15 import org.eclipse.jface.viewers.ViewerFilter;
16
17 import org.eclipse.jdt.core.IPackageFragment;
18 import org.eclipse.jdt.core.JavaModelException;
19
20
21 /**
22  * Filters empty non-leaf package fragments
23  */
24 public class EmptyInnerPackageFilter extends ViewerFilter {
25
26     /*
27      * @see ViewerFilter
28      */
29     public boolean select(Viewer viewer, Object JavaDoc parent, Object JavaDoc element) {
30         if (element instanceof IPackageFragment) {
31             IPackageFragment pkg= (IPackageFragment)element;
32             try {
33                 if (pkg.isDefaultPackage())
34                     return pkg.hasChildren();
35                 return !pkg.hasSubpackages() || pkg.hasChildren() || (pkg.getNonJavaResources().length > 0);
36             } catch (JavaModelException e) {
37                 return false;
38             }
39         }
40
41         return true;
42     }
43 }
44
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