import java.awt.*;
/**
* Prints (by appending) a list of Integers onto a TextArea AWT object.
* It does not clear the text area before writing to it.
* Returns null always.
*/
public class TextAreaPrint implements FLVisitor_I {
	private TextArea pad;

  public TextAreaPrint(TextArea p) {
    pad = p;
	}

  public Object forEmpty(Empty host) {
    return null;   // Nothing to print here.
  }

  public Object forCons(Cons host) {
    // appends the integer value of the data as a new line onto the TextArea:
    pad.append(host.first().toString() +'\n');     // modifies pad !!!
    return host.rest().execute(this);  // recur on the rest of the list.
  }
}