Sync git svn branch with SVN repository r33269.

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / diagram / participant / ElementTransferableProvider.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/participant/ElementTransferableProvider.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/participant/ElementTransferableProvider.java
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+/*******************************************************************************\r
+ * Copyright (c) 2016 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     Semantum Oy - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.diagram.participant;\r
+\r
+import java.awt.datatransfer.Transferable;\r
+\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.scenegraph.g2d.nodes.TransferableProvider;\r
+import org.simantics.ui.dnd.PlaintextTransfer;\r
+\r
+/**\r
+ * @author Antti Villberg, Tuukka Lehtonen\r
+ */\r
+public class ElementTransferableProvider implements TransferableProvider {\r
+\r
+       final private ICanvasContext context;\r
+       final private IElement element;\r
+       \r
+       public ElementTransferableProvider(ICanvasContext context, IElement element) {\r
+               this.context = context;\r
+               this.element = element;\r
+       }\r
+       \r
+       @Override\r
+       public Transferable create() {\r
+               ElementJSON converter = context.getAtMostOneItemOfClass(ElementJSON.class);\r
+               if (converter == null)\r
+                       return null;\r
+               return converter.getJSON(element).map(PlaintextTransfer::new).orElse(null);\r
+       }\r
+\r
+}\r