package org.kuali.student.common.ui.client.widgets;

 import com.google.gwt.event.dom.client.HasKeyUpHandlers;

 import com.google.gwt.event.dom.client.KeyUpEvent;

 import com.google.gwt.event.dom.client.KeyUpHandler;

 import com.google.gwt.user.client.ui.HasText;

 /**

  * TextLinkageHelper is used to link two text fields. As you type in one field the text 

  * appears on the linked field.

  * 

  * */

 public class TextLinkageHelper {

     static String masterString;

     public static void link(final HasText master, final HasText slave) {

         masterString = master.getText();

         if (master instanceof HasKeyUpHandlers) {

               HasKeyUpHandlers masterTextBox = (HasKeyUpHandlers) master;

               masterTextBox.addKeyUpHandler(new KeyUpHandler() {

                 @Override

                 public void onKeyUp(KeyUpEvent event) {

                       if(masterString.equals(slave.getText()) 

                               ||"".equals(slave.getText()) ){

                           masterString = master.getText();

                           slave.setText(masterString);

                       }

                 }

               });

           }

       } 

 }