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Java > Open Source Codes > org > eclipse > jdt > internal > ui > jarpackager > ContainerFilter


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.jarpackager;
12
13 import org.eclipse.core.resources.IContainer;
14
15 import org.eclipse.jface.viewers.Viewer;
16 import org.eclipse.jface.viewers.ViewerFilter;
17
18 import org.eclipse.jdt.core.IJavaElement;
19
20 /**
21  * Filters out all packages and folders
22  */

23 class ContainerFilter extends ViewerFilter {
24     
25     private boolean fFilterContainers;
26     
27     public static boolean FILTER_CONTAINERS= true;
28     public static boolean FILTER_NON_CONTAINERS= false;
29
30     public ContainerFilter(boolean filterContainers) {
31         fFilterContainers= filterContainers;
32     }
33     
34     /* (non-Javadoc)
35      * @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
36      */

37     public boolean select(Viewer viewer, Object JavaDoc parent, Object JavaDoc element) {
38         boolean isContainer= element instanceof IContainer;
39         if (!isContainer && element instanceof IJavaElement) {
40             int type= ((IJavaElement)element).getElementType();
41             isContainer= type == IJavaElement.JAVA_MODEL
42                         || type == IJavaElement.JAVA_PROJECT
43                         || type == IJavaElement.PACKAGE_FRAGMENT
44                         || type ==IJavaElement.PACKAGE_FRAGMENT_ROOT;
45         }
46         return (fFilterContainers && !isContainer) || (!fFilterContainers && isContainer);
47     }
48 }
49
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