bundles/org.simantics.ui/src/org/simantics/ui/dnd/MultiTransferable.java

   1 package org.simantics.ui.dnd;\r
   2 \r
   3 import java.awt.datatransfer.Clipboard;\r
   4 import java.awt.datatransfer.ClipboardOwner;\r
   5 import java.awt.datatransfer.DataFlavor;\r
   6 import java.awt.datatransfer.Transferable;\r
   7 import java.awt.datatransfer.UnsupportedFlavorException;\r
   8 import java.io.IOException;\r
   9 import java.util.HashMap;\r
  10 import java.util.Map;\r
  11 \r
  12 public class MultiTransferable implements Transferable, ClipboardOwner {\r
  13         \r
  14         Map<DataFlavor, Transferable> transferables = new HashMap<>();\r
  15         \r
  16         public MultiTransferable(Transferable ... tr) {\r
  17                 for(Transferable t : tr) {\r
  18                         for(DataFlavor f : t.getTransferDataFlavors()) {\r
  19                                 transferables.put(f, t);\r
  20                         }\r
  21                 }\r
  22         }\r
  23 \r
  24         @Override\r
  25         public void lostOwnership(Clipboard arg0, Transferable arg1) {\r
  26                 for(Transferable t : transferables.values())\r
  27                         if(t instanceof ClipboardOwner) ((ClipboardOwner) t).lostOwnership(arg0, arg1);\r
  28         }\r
  29 \r
  30         @Override\r
  31         public Object getTransferData(DataFlavor arg0) throws UnsupportedFlavorException, IOException {\r
  32                 Transferable t = transferables.get(arg0);\r
  33                 if(t == null) return t;\r
  34                 return t.getTransferData(arg0);\r
  35         }\r
  36 \r
  37         @Override\r
  38         public DataFlavor[] getTransferDataFlavors() {\r
  39                 return transferables.keySet().toArray(new DataFlavor[transferables.size()]);\r
  40         }\r
  41 \r
  42         @Override\r
  43         public boolean isDataFlavorSupported(DataFlavor arg0) {\r
  44                 return transferables.containsKey(arg0);\r
  45         }\r
  46 \r
  47 }\r