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Java > Open Source Codes > net > suberic > pooka > gui > dnd > AttachmentTransferHandler


1 package net.suberic.pooka.gui.dnd;
2
3 import javax.swing.*;
4 import java.io.*;
5 import java.util.*;
6 import java.awt.*;
7 import java.awt.datatransfer.*;
8 import java.awt.event.*;
9
10 import net.suberic.pooka.*;
11 import net.suberic.pooka.gui.*;
12
13 /**
14  * A TransferHandler for an attachment window. This is for ReadMessages,
15  * so all that's really supported is exporting the attachment(s).
16  */
17 public class AttachmentTransferHandler extends TransferHandler {
18
19   protected Transferable createTransferable(JComponent c) {
20     Attachment attachment = null;
21     MessageProxy proxy = null;
22     if (c instanceof net.suberic.pooka.gui.AttachmentPane) {
23       attachment = ((AttachmentPane) c).getSelectedAttachment();
24       proxy = ((AttachmentPane) c).getMessageProxy();
25     } else if (c instanceof JTable) {
26       try {
27     Object JavaDoc o = SwingUtilities.getAncestorOfClass(Class.forName("net.suberic.pooka.gui.AttachmentPane"), c);
28     if (o != null ) {
29       attachment = ((AttachmentPane) o).getSelectedAttachment();
30       proxy = ((AttachmentPane) o).getMessageProxy();
31     } else {
32       return null;
33     }
34       } catch ( Exception JavaDoc e) {
35     return null;
36       }
37     }
38     
39     if (attachment != null && proxy != null) {
40       try {
41     return new AttachmentTransferable(attachment, proxy);
42       } catch (java.io.IOException JavaDoc ioe) {
43     return null;
44       }
45     } else {
46       return null;
47     }
48     
49   }
50
51   public int getSourceActions(JComponent c) {
52     return COPY;
53   }
54
55   public boolean canImport(JComponent c, DataFlavor[] flavors) {
56     return false;
57   }
58
59   protected void exportDone(JComponent source, Transferable data, int action) {
60     /*
61     if (data instanceof AttachmentTransferable) {
62       ((AttachmentTransferable) data).completeWrite();
63     }
64     */
65   }
66   
67 }
68
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