Sync git svn branch with SVN repository r33269.
[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / diagram / participant / ElementTransferableProvider.java
1 /*******************************************************************************\r
2  * Copyright (c) 2016 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  *     Semantum Oy - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.g2d.diagram.participant;\r
13 \r
14 import java.awt.datatransfer.Transferable;\r
15 \r
16 import org.simantics.g2d.canvas.ICanvasContext;\r
17 import org.simantics.g2d.element.IElement;\r
18 import org.simantics.scenegraph.g2d.nodes.TransferableProvider;\r
19 import org.simantics.ui.dnd.PlaintextTransfer;\r
20 \r
21 /**\r
22  * @author Antti Villberg, Tuukka Lehtonen\r
23  */\r
24 public class ElementTransferableProvider implements TransferableProvider {\r
25 \r
26         final private ICanvasContext context;\r
27         final private IElement element;\r
28         \r
29         public ElementTransferableProvider(ICanvasContext context, IElement element) {\r
30                 this.context = context;\r
31                 this.element = element;\r
32         }\r
33         \r
34         @Override\r
35         public Transferable create() {\r
36                 ElementJSON converter = context.getAtMostOneItemOfClass(ElementJSON.class);\r
37                 if (converter == null)\r
38                         return null;\r
39                 return converter.getJSON(element).map(PlaintextTransfer::new).orElse(null);\r
40         }\r
41 \r
42 }\r