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Message:

Clipboard

Posted by Eduardo on January 03, 2002 at 8:26 PM

I've just implemented a cut and paste in a program that take some circles from a canvas (swing) and paste it in another application. But the problem is that it doesn't delete the circles in the old canvas... working as a copy and not a cut. The circles are actually vectors and below you will find the code for this part. My question is: how to delete those circles from the old canvas?

class VectorSelection implements Transferable, ClipboardOwner {
public static DataFlavor vectorFlavor;
private DataFlavor [] supportedFlavors = {vectorFlavor};
private Vector shapes;

public VectorSelection (Vector parShape)
{
shapes = parShape;
try {
vectorFlavor = new DataFlavor (Class.forName ("java.util.Vector"), "Vector");
}
catch (ClassNotFoundException e) {
e.printStackTrace ();
}
}

public synchronized DataFlavor [] getTransferDataFlavors () {
return (supportedFlavors);
}

public boolean isDataFlavorSupported (DataFlavor parFlavor) {
return (parFlavor.equals (vectorFlavor));
}

public synchronized Object getTransferData (DataFlavor parFlavor)
throws UnsupportedFlavorException {
if (parFlavor.equals (vectorFlavor))
return ( shapes );
else
throw new UnsupportedFlavorException (vectorFlavor);
}

public void lostOwnership (Clipboard parClipboard, Transferable parTransferable) {

System.out.println ("Lost ownership");
}
}

• removing the circle vijay January 07, 2002 at 7:10 AM (1)
  • Thanks! Eduardo January 09, 2002 at 7:22 AM (0)