Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.ui / src / org / simantics / ui / dnd / ResourceTransferUtils.java

diff --git a/bundles/org.simantics.ui/src/org/simantics/ui/dnd/ResourceTransferUtils.java b/bundles/org.simantics.ui/src/org/simantics/ui/dnd/ResourceTransferUtils.java
new file mode 100644 (file)
index 0000000..96444af
--- /dev/null
+++ b/bundles/org.simantics.ui/src/org/simantics/ui/dnd/ResourceTransferUtils.java
@@ -0,0 +1,106 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 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
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.ui.dnd;\r
+\r
+import java.awt.datatransfer.DataFlavor;\r
+import java.awt.datatransfer.StringSelection;\r
+import java.awt.datatransfer.Transferable;\r
+import java.awt.datatransfer.UnsupportedFlavorException;\r
+import java.io.IOException;\r
+\r
+import org.eclipse.swt.dnd.TextTransfer;\r
+import org.eclipse.swt.dnd.TransferData;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.common.ResourceArray;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.service.SerialisationSupport;\r
+import org.simantics.utils.ui.workbench.StringMemento;\r
+\r
+/**\r
+ * @author Toni Kalajainen\r
+ */\r
+public class ResourceTransferUtils {\r
+\r
+    public static String createStringTransferable(Session s, ResourceArray resources[])\r
+    throws DatabaseException\r
+    {\r
+        return createStringTransferable(s, resources, null);\r
+    }\r
+\r
+    public static String createStringTransferable(Session s, ResourceArray resources[], String purpose)\r
+    throws DatabaseException\r
+    {\r
+        SerialisationSupport support = s.getService(SerialisationSupport.class);\r
+        StringMemento memento = new StringMemento();\r
+        ResourceTransferData transferData = new ResourceTransferData(s, resources);\r
+        transferData.setPurpose(purpose);\r
+        transferData.writeToMemento(support, memento);\r
+        String strData = memento.toString();\r
+        return strData;\r
+    }\r
+\r
+    public static String createStringTransferable(SerialisationSupport serializer, ResourceTransferData transferData)\r
+    throws DatabaseException\r
+    {\r
+        StringMemento memento = new StringMemento();\r
+        transferData.writeToMemento(serializer, memento);\r
+        String strData = memento.toString();\r
+        return strData;\r
+    }\r
+\r
+    public static Transferable createAwtTransferable(SerialisationSupport serializer, ResourceTransferData transferData)\r
+    throws DatabaseException\r
+    {\r
+        String strData = createStringTransferable(serializer, transferData);\r
+        return new StringSelection(strData);\r
+    }\r
+\r
+    public static TransferData createSwtTextTransferData(SerialisationSupport serializer, ResourceTransferData transferable)\r
+    throws DatabaseException\r
+    {\r
+        String strData = createStringTransferable(serializer, transferable);\r
+        TransferData transferData = new TransferData();\r
+        TextTransfer.getInstance().javaToNative(strData, transferData);\r
+        return transferData;\r
+    }\r
+\r
+    public static ResourceTransferData readStringTransferable(SerialisationSupport serializer, String strData)\r
+    throws IllegalArgumentException, DatabaseException\r
+    {\r
+        StringMemento sm = new StringMemento(strData);\r
+        ResourceTransferData result = new ResourceTransferData();\r
+        result.readFromMemento(serializer, sm);\r
+        return result;\r
+    }\r
+\r
+    public static ResourceTransferData readAwtTransferable(SerialisationSupport serializer, Transferable transferable)\r
+    throws UnsupportedFlavorException, IOException, IllegalArgumentException, DatabaseException\r
+    {\r
+        if (!transferable.isDataFlavorSupported(DataFlavor.stringFlavor))\r
+            throw new UnsupportedFlavorException(DataFlavor.stringFlavor);\r
+\r
+        String dropData = (String) transferable.getTransferData(DataFlavor.stringFlavor);\r
+        ResourceTransferData result = readStringTransferable(serializer, dropData);\r
+        return result;\r
+    }\r
+\r
+    public static ResourceTransferData readSwtTextTransferable(SerialisationSupport serializer, TransferData transferData)\r
+    throws IOException, IllegalArgumentException, DatabaseException\r
+    {\r
+        if (!TextTransfer.getInstance().isSupportedType(transferData))\r
+            throw new IllegalArgumentException("argument is not text transfer");\r
+        String dropData = TextTransfer.getInstance().nativeToJava(transferData).toString();\r
+        ResourceTransferData result = readStringTransferable(serializer, dropData);\r
+        return result;\r
+    }\r
+\r
+}\r