// CopyPasteTool.pde
// Marius Watz - http://workshop.evolutionzone.com
//
// Code for transferring strings via the clipboard using copy / paste.
// Useful for simple inter-app communication.
 
// Java classes needed for copy / paste functions.
import java.awt.datatransfer.*;
 
CopyPaste copypaste;
 
void setup() {
  copypaste=new CopyPaste();
}
 
void keyPressed() {
  // If 'c' is pressed the Hex string for the current color is copied
  // to the clipboard.
  if(key=='c') transfer.sendString("Test "+(int)random(1000));
  if(key=='v') println("From the clipboard: '"+transfer.getString()+"'");
}
 
 
// 
// The following code provide for sending and receiving strings 
// via the system clipboard using standard copy / paste. This class 
// can be copied into any Processing sketch, ready for use.
//
// Based on code found at http://www.javapractices.com/Topic82.cjp
 
class CopyPaste implements ClipboardOwner {

  public void sendString(String s) {
    StringSelection stringSelection = new StringSelection( s );
    Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
    clipboard.setContents( stringSelection, this );
  }

  public String getString() {
    String str="";

    Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
    Transferable contents = clipboard.getContents(null);
    boolean hasTransferableText =
      (contents != null) &&
      contents.isDataFlavorSupported(DataFlavor.stringFlavor);
    if(hasTransferableText) {
      try {str=(String)contents.getTransferData(DataFlavor.stringFlavor);
      }
      catch (Exception ex){
        System.out.println("Exception: "+ex.toString());
        ex.printStackTrace();
        str=" ";
      }
    }

    return str;
  }

  // Necessary method, but does nothing
   public void lostOwnership( Clipboard clip, Transferable data) {
     //do nothing
   }
}