bundles/org.simantics.diagram/src/org/simantics/diagram/ui/ElementClassTransferable.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 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.diagram.ui;
  13
  14 import java.awt.datatransfer.Clipboard;
  15 import java.awt.datatransfer.ClipboardOwner;
  16 import java.awt.datatransfer.DataFlavor;
  17 import java.awt.datatransfer.Transferable;
  18 import java.awt.datatransfer.UnsupportedFlavorException;
  19 import java.io.IOException;
  20 import java.io.Serializable;
  21
  22 public class ElementClassTransferable implements Transferable, ClipboardOwner {
  23
  24         public static final DataFlavor FLAVOR = new DataFlavor( ResourceElementClassTransferData.class, "Element Class" );
  25
  26         public static class ResourceElementClassTransferData implements Serializable {
  27                 private static final long serialVersionUID = -4990050837054070697L;
  28                 public String elementClassResourceRandomAccessReference[];
  29         }
  30
  31         private ResourceElementClassTransferData data;
  32
  33         /**
  34          * Creates a <code>Transferable</code> capable of transferring the specified
  35          * <code>String</code>.
  36          */
  37         public ElementClassTransferable(ResourceElementClassTransferData data) {
  38                 this.data = data;
  39         }
  40
  41         /**
  42          * Returns an array of flavors in which this <code>Transferable</code> can
  43          * provide the data. <code>DataFlavor.stringFlavor</code> is properly
  44          * supported. Support for <code>DataFlavor.plainTextFlavor</code> is
  45          * <b>deprecated</b>.
  46          *
  47          * @return an array of length two, whose elements are <code>DataFlavor.
  48          *         stringFlavor</code> and <code>DataFlavor.plainTextFlavor</code>
  49          */
  50         public DataFlavor[] getTransferDataFlavors() {
  51                 return new DataFlavor[] { FLAVOR };
  52         }
  53
  54         public boolean isDataFlavorSupported(DataFlavor flavor) {
  55                 return flavor.equals(FLAVOR);
  56         }
  57
  58         public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
  59                 if (flavor.equals(FLAVOR))
  60                         return (ResourceElementClassTransferData) data;
  61                 throw new UnsupportedFlavorException(flavor);
  62         }
  63
  64         public void lostOwnership(Clipboard clipboard, Transferable contents) {
  65         }
  66
  67 }