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Java > Open Source Codes > org > eclipse > ui > internal > dialogs > WizardActivityFilter


1 /*******************************************************************************
2  * Copyright (c) 2004, 2006 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.ui.internal.dialogs;
12
13 import org.eclipse.jface.viewers.AbstractTreeViewer;
14 import org.eclipse.jface.viewers.ITreeContentProvider;
15 import org.eclipse.jface.viewers.Viewer;
16 import org.eclipse.jface.viewers.ViewerFilter;
17 import org.eclipse.ui.activities.WorkbenchActivityHelper;
18 import org.eclipse.ui.model.AdaptableList;
19
20 /**
21  * Viewer filter designed to work with the new wizard page (and its input/content provider).
22  * This will filter all non-primary wizards that are not enabled by activity.
23  *
24  * @since 3.0
25  */
26 public class WizardActivityFilter extends ViewerFilter {
27
28     /* (non-Javadoc)
29      * @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
30      */
31     public boolean select(Viewer viewer, Object JavaDoc parentElement, Object JavaDoc element) {
32         Object JavaDoc[] children = ((ITreeContentProvider) ((AbstractTreeViewer) viewer)
33                 .getContentProvider()).getChildren(element);
34         if (children.length > 0) {
35             return filter(viewer, element, children).length > 0;
36         }
37
38         if (parentElement.getClass().equals(AdaptableList.class)) {
39             return true; //top-level ("primary") wizards should always be returned
40 }
41
42         if (WorkbenchActivityHelper.filterItem(element)) {
43             return false;
44         }
45
46         return true;
47     }
48 }
49
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