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.Collection;\r
  10 import java.util.HashMap;\r
  11 import java.util.Map;\r
  12 \r
  13 public class MultiTransferable implements Transferable, ClipboardOwner {\r
  14         \r
  15         Map<DataFlavor, Transferable> transferables = new HashMap<>();\r
  16         \r
  17         public MultiTransferable(Transferable ... tr) {\r
  18                 for(Transferable t : tr) {\r
  19                         for(DataFlavor f : t.getTransferDataFlavors()) {\r
  20                                 transferables.put(f, t);\r
  21                         }\r
  22                 }\r
  23         }\r
  24 \r
  25         public MultiTransferable(Collection<Transferable> tr) {\r
  26                 for(Transferable t : tr) {\r
  27                         for(DataFlavor f : t.getTransferDataFlavors()) {\r
  28                                 transferables.put(f, t);\r
  29                         }\r
  30                 }\r
  31         }\r
  32 \r
  33         @Override\r
  34         public void lostOwnership(Clipboard arg0, Transferable arg1) {\r
  35                 for(Transferable t : transferables.values())\r
  36                         if(t instanceof ClipboardOwner) ((ClipboardOwner) t).lostOwnership(arg0, arg1);\r
  37         }\r
  38 \r
  39         @Override\r
  40         public Object getTransferData(DataFlavor arg0) throws UnsupportedFlavorException, IOException {\r
  41                 Transferable t = transferables.get(arg0);\r
  42                 if(t == null) return t;\r
  43                 return t.getTransferData(arg0);\r
  44         }\r
  45 \r
  46         @Override\r
  47         public DataFlavor[] getTransferDataFlavors() {\r
  48                 return transferables.keySet().toArray(new DataFlavor[transferables.size()]);\r
  49         }\r
  50 \r
  51         @Override\r
  52         public boolean isDataFlavorSupported(DataFlavor arg0) {\r
  53                 return transferables.containsKey(arg0);\r
  54         }\r
  55 \r
  56         @Override\r
  57         public String toString() {\r
  58                 return "MultiTransferable " + transferables.toString();\r
  59         }\r
  60 \r
  61 }\r