TransferHandler to dnd files from OS desktop to JTable

[Yahya Elyasse]

Hi guys,
I'm looking after some java code to implement dragging files from mac os x desktop and dropping them to a JTable in my java application. i tried some code but it works on windows but fails on mac os .i don't know what's the problem . here is my TransferHandler which doesn't work on mac :

 public class FileTableTransferHandler extends TransferHandler {
MainPanel up;
 
public FileTableTransferHandler(MainPanel up) {
super();
this.up = up;

}
 
public boolean canImport(JComponent comp, DataFlavor[] flavors) {
for (int j = 0; j < flavors.length; j++) {
if (FileBrowserTransferHandler.fileFlavor.equals(flavors[j])
||FileBrowserTransferHandler.listFlavor.equals(flavors[j])
|| DataFlavor.javaFileListFlavor.equals(flavors[j])
|| DataFlavor.stringFlavor.equals(flavors[j]) ) {
return true;
}
}
return false;
}

public boolean importData(JComponent comp, Transferable t) {

boolean canimport=canImport(comp, t.getTransferDataFlavors());
System.out.println("can import ? " +canimport);
System.out.println("javaFileListFlavor supported ? "+t.isDataFlavorSupported(DataFlavor.javaFileListFlavor));
if (canimport) {
File[] xferData = null;
DataFlavor[] f=t.getTransferDataFlavors();
System.out.println("data flavors array lenght: " +f.length);
for(int i=0;i<f.length;i++){
System.out.println("dataflavor "+i+" ->"+f[i]);
System.out.println(f[i]+" is supported ? "+t.isDataFlavorSupported(f[i]));
}
for(int i=0;i<f.length;i++){
try {
Object data = t.getTransferData(f[i]);
//System.out.println("dataflavor "+i+" ->"+f[i]);
if (data instanceof File[]) {
xferData = (File[]) t
.getTransferData(FileBrowserTransferHandler.fileFlavor);
up.addFiles(xferData);
return true;
}
 if(data instanceof List) {
List fileList = (List) t
.getTransferData(DataFlavor.javaFileListFlavor);
System.out.println("debug file drop ->files list :"+fileList);
up.addFiles((File[]) fileList.toArray(new File[fileList
.size()]));
return true;
} if(data instanceof String) {
String path = (String) t.getTransferData(DataFlavor.stringFlavor);
path=format(path);
if (path!=null) {
File file = new File(path);
File[] thefiles=addDirectoryFiles(file);
up.addFiles(thefiles);
return true; 

}
}

} catch (UnsupportedFlavorException ufe) {
ufe.printStackTrace();
return false;
} catch (IOException ioe) {
ioe.printStackTrace();
return false;
}
 
//up.addFiles(xferData);
//return true;
}
}
return false;
}
 
// Take selection's first file and put off the \n
private String format(String path) {
if (path.startsWith("file://")) {
return path.substring(7, path.indexOf("\n")-1);
}
return null;
} 
public File[] addDirectoryFiles(File f) {
Vector files=new Vector(); 
if (!f.isDirectory()) {

files.add(f);
} else {
File[] dirFiles = f.listFiles();
for (int i = 0; i < dirFiles.length; i++) {
if (dirFiles[i].isDirectory()) {
addDirectoryFiles(dirFiles[i]);
} else {
files.add(dirFiles[i]);
}
}
}
System.out.println("debug info :"+files);
return (File[]) files.toArray(new File[files.size()]);
}
protected Transferable createTransferable(JComponent c) {
JTable table = (JTable) c;
int[] selection = table.getSelectedRows();
table.getModel();
Vector selectedRows = new Vector();
for (int j = 0; j < selection.length; j++) {
File f = ((UploadPanelDataModel) table.getModel())
.getFileAt(selection[j]);
selectedRows.add(f);
}
return new ListTransferable(selectedRows);
 
}
 

public int getSourceActions(JComponent c) {
return COPY_OR_MOVE;
}
}   

any hint ,links or sample source code is greatly welcomed.

thanks much