content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.gwt.client.ui.input;
  
  import com.google.gwt.event.dom.client.KeyUpEvent;
  import com.google.gwt.event.dom.client.KeyUpHandler;
  import com.google.gwt.event.logical.shared.ValueChangeEvent;
  import com.google.gwt.user.client.ui.TextBox;
  
  /**
   * A simple text box firing change events whenever a key is pressed and the value has changed.<p>
   */
  public class CmsSimpleTextBox extends TextBox {
  
      /** The previous value. */
      private String m_previousValue;
  
      /**
       * Constructor.<p>
       */
      public CmsSimpleTextBox() {
  
          super();
          addDomHandler(new KeyUpHandler() {
  
              public void onKeyUp(KeyUpEvent event) {
  
                  fireChange();
              }
          }, KeyUpEvent.getType());
      }
  
      /**
       * @see com.google.gwt.user.client.ui.ValueBoxBase#setValue(java.lang.Object, boolean)
       */
      @Override
      public void setValue(String value, boolean fireEvents) {
  
          m_previousValue = value;
          super.setValue(value, fireEvents);
      }
  
      /**
       * Triggered on key press to fire event if the value changed.<p>
       */
      void fireChange() {
  
          ValueChangeEvent.fireIfNotEqual(this, m_previousValue, getValue());
          m_previousValue = getValue();
      }
  }
  