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Fixed all line endings of the repository
[simantics/platform.git] / bundles / org.simantics.browsing.ui.swt / src / org / simantics / browsing / ui / swt / ResourceSelectionFilter.java
1 /*******************************************************************************
2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management
3  * in Industry THTH ry.
4  * All rights reserved. This program and the accompanying materials
5  * are made available under the terms of the Eclipse Public License v1.0
6  * which accompanies this distribution, and is available at
7  * http://www.eclipse.org/legal/epl-v10.html
8  *
9  * Contributors:
10  *     VTT Technical Research Centre of Finland - initial API and implementation
11  *******************************************************************************/
12 package org.simantics.browsing.ui.swt;
13
14 import org.eclipse.jface.viewers.ISelection;
15 import org.eclipse.jface.viewers.IStructuredSelection;
16 import org.eclipse.ui.IWorkbenchPart;
17 import org.simantics.db.Resource;
18 import org.simantics.ui.utils.ResourceAdaptionUtils;
19
20 /**
21  * @author Tuukka Lehtonen
22  *
23  */
24 public class ResourceSelectionFilter implements WorkbenchSelectionFilter {
25
26     public static final ResourceSelectionFilter FILTER = new ResourceSelectionFilter();
27
28     @Override
29     public ISelection filterSelection(IWorkbenchPart part, ISelection s) {
30         // Nevermind the part, just check that the selection contains nothing
31         // but resources.
32         if (s instanceof IStructuredSelection) {
33             IStructuredSelection ss = (IStructuredSelection) s;
34             if (ss.isEmpty())
35                 return null;
36
37             Resource[] resources = ResourceAdaptionUtils.toResources(ss);
38             if (resources.length == ss.size()) {
39                 return s;
40             }
41         }
42
43         // Not worth passing.
44         return null;
45     }
46
47 }