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[simantics/platform.git] / bundles / org.simantics.browsing.ui.graph.impl / src / org / simantics / browsing / ui / graph / impl / GraphInputSources.java
1 /*******************************************************************************\r
2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
3  * in Industry THTH ry.\r
4  * All rights reserved. This program and the accompanying materials\r
5  * are made available under the terms of the Eclipse Public License v1.0\r
6  * which accompanies this distribution, and is available at\r
7  * http://www.eclipse.org/legal/epl-v10.html\r
8  *\r
9  * Contributors:\r
10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.browsing.ui.graph.impl;\r
13 \r
14 import org.eclipse.ui.IWorkbenchPart;\r
15 import org.simantics.Simantics;\r
16 import org.simantics.browsing.ui.GraphExplorer;\r
17 import org.simantics.db.Resource;\r
18 import org.simantics.db.management.ISessionContext;\r
19 \r
20 /**\r
21  * @author Antti Villberg\r
22  */\r
23 public class GraphInputSources {\r
24 \r
25     public static SessionContextInputSource uriSource(String uri) {\r
26         return new URIResourceInputSource(uri);\r
27     }\r
28 \r
29     public static SessionContextInputSource projectSource() {\r
30         return new SessionContextInputSource() {\r
31             @Override\r
32             public Object get(ISessionContext ctx) {\r
33                 Resource project = Simantics.peekProjectResource();\r
34                 return project != null ? project : GraphExplorer.EMPTY_INPUT;\r
35             }\r
36             @Override\r
37             public IWorkbenchPart getProvider() {\r
38                 return null;\r
39             }\r
40         };\r
41     }\r
42 \r
43     public static SessionContextInputSource constant(final Object input) {\r
44         if (input == null)\r
45             throw new NullPointerException("null input");\r
46         return new SessionContextInputSource() {\r
47             @Override\r
48             public Object get(ISessionContext ctx) {\r
49                 return input;\r
50             }\r
51             @Override\r
52             public IWorkbenchPart getProvider() {\r
53                 return null;\r
54             }\r
55         };\r
56     }\r
57 \r
58     public static SessionContextInputSource workbenchSelection() {\r
59         return new WorkbenchSelectionInputSource();\r
60     }\r
61 \r
62 }\r