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Java > Open Source Codes > org > eclipse > ant > internal > ui > model > InternalTargetFilter


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
12 package org.eclipse.ant.internal.ui.model;
13
14 import org.apache.tools.ant.Target;
15 import org.eclipse.jface.viewers.CheckboxTableViewer;
16 import org.eclipse.jface.viewers.Viewer;
17 import org.eclipse.jface.viewers.ViewerFilter;
18
19
20 public class InternalTargetFilter extends ViewerFilter {
21     
22     private int fFiltered= 0;
23     /**
24      * Returns whether the given target is an internal target. Internal
25      * targets are targets which have no description. The default target
26      * is never considered internal.
27      */

28     public boolean select(Viewer viewer, Object JavaDoc parentElement, Object JavaDoc element) {
29         boolean result= true;
30         if (viewer instanceof CheckboxTableViewer) {
31             if (((CheckboxTableViewer)viewer).getChecked(element)) {
32                 //do not filter out (selected) checked items
33
return true;
34             }
35         }
36         if (element instanceof AntTargetNode) {
37             Target target= ((AntTargetNode)element).getTarget();
38             result= target.getDescription() != null || ((AntTargetNode)element).isDefaultTarget();
39         }
40         if (!result) {
41             fFiltered++;
42         }
43         return result;
44     }
45     /* (non-Javadoc)
46      * @see org.eclipse.jface.viewers.ViewerFilter#filter(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object[])
47      */

48     public Object JavaDoc[] filter(Viewer viewer, Object JavaDoc parent, Object JavaDoc[] elements) {
49         fFiltered= 0;
50         return super.filter(viewer, parent, elements);
51     }
52     
53     public int getNumberOfTargetsFiltered() {
54         return fFiltered;
55     }
56 }
57
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