AttachmentTransferable


1   package net.suberic.pooka.gui.dnd;
2   
3   import net.suberic.pooka.*;
4   import net.suberic.pooka.gui.*;
5   
6   import java.awt.datatransfer.*;
7   import java.io.IOException  ;
8   import java.io.File  ;
9   
10  public class AttachmentTransferable implements Transferable {
11    
12    Attachment mAttachment = null;
13    MessageProxy mMessageProxy = null;
14    File   mTmpFile = null;
15    boolean mFileWritten = false;
16  
17    public AttachmentTransferable(Attachment pAttachment, MessageProxy pMessageProxy) throws java.io.IOException   {
18      setAttachment(pAttachment);
19      setMessageProxy(pMessageProxy);
20      // create a temp file in the tmp directory.
21  
22      String   filename = pAttachment.getName();
23      if (filename == null || filename.length() == 0) {
24        filename = "Attachment";
25      }
26      mTmpFile = DndUtils.createTemporaryFile(filename);
27    }
28  
29    public DataFlavor[] getTransferDataFlavors() {
30      return new DataFlavor[] {
31        DataFlavor.javaFileListFlavor
32      };
33    }
34  
35    public boolean isDataFlavorSupported(DataFlavor flavor) {
36      if (flavor == DataFlavor.javaFileListFlavor)
37        return true;
38      else 
39        return false;
40    }
41  
42    public Object   getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException   {
43      if (isDataFlavorSupported(flavor)) {
44        
45        java.util.LinkedList   list = new java.util.LinkedList  ();
46  
47        list.add(mTmpFile);
48  
49        if (! mFileWritten) {
50      writeFile();
51      mFileWritten = true;
52        }
53        return list;
54      } else {
55        throw new UnsupportedFlavorException(flavor);
56      }
57    }
58  
59    /**
60     * Writes the File object for this attachment.
61     */
62    public void writeFile() {
63      AttachmentHandler handler = new AttachmentHandler(mMessageProxy);
64      try {
65        handler.saveFileAs(mAttachment, mTmpFile);
66      } catch (IOException   exc) {
67        handler.showError(Pooka.getProperty("error.SaveFile", "Error saving file") + ":\n", Pooka.getProperty("error.SaveFile", "Error saving file"), exc);
68      }
69    }
70  
71    /**
72     * Returns the Attachment.
73     */
74    public Attachment getAttachment() {
75      return mAttachment;
76    }
77   
78    /**
79     * Sets the Attachment.
80     */
81    public void setAttachment(Attachment pAttachment) {
82      mAttachment = pAttachment;
83    }
84  
85    /**
86     * Returns the MessageProxy.
87     */
88    public MessageProxy getMessageProxy() {
89      return mMessageProxy;
90    }
91    
92    /**
93     * Sets the MessageProxy.
94     */
95    public void setMessageProxy(MessageProxy pMessageProxy) {
96      mMessageProxy = pMessageProxy;
97    }
98    
99    
100 }
101
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