SealPackagesFilter


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 java.util.List  ;
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   * Only selects packages (i.e. IPackageFragments) which are in
22   * the initial packages list and parent types (i.e. package fragment
23   * root, Java project and Java model)
24   */
25  class SealPackagesFilter  extends ViewerFilter {
26  
27      private List   fAllowedPackages;  
28  
29      public SealPackagesFilter(List   packages) {
30          fAllowedPackages= packages;
31      }
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   parent, Object   element) {
38          if (element instanceof IJavaElement) {
39              int type= ((IJavaElement)element).getElementType();
40              if (type == IJavaElement.JAVA_MODEL || type == IJavaElement.JAVA_PROJECT || type ==IJavaElement.PACKAGE_FRAGMENT_ROOT)
41                  return true;
42              return (type == IJavaElement.PACKAGE_FRAGMENT && fAllowedPackages.contains(element));
43              
44          }
45          else
46              return false;
47      }
48  }
49
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