DigitsOnlyListener.java

/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.gwt.widgets.client.text;

import com.google.gwt.user.client.ui.KeyboardListenerAdapter;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;

/**
 * @author wseyler
 * 
 */
@SuppressWarnings( "deprecation" )
public class DigitsOnlyListener extends KeyboardListenerAdapter {
  public void onKeyPress( Widget sender, char keyCode, int modifiers ) {
    if ( ( !Character.isDigit( keyCode ) ) && ( keyCode != (char) KEY_TAB ) && ( keyCode != (char) KEY_BACKSPACE )
        && ( keyCode != (char) KEY_DELETE ) && ( keyCode != (char) KEY_ENTER ) && ( keyCode != (char) KEY_HOME )
        && ( keyCode != (char) KEY_END ) && ( keyCode != (char) KEY_LEFT ) && ( keyCode != (char) KEY_UP )
        && ( keyCode != (char) KEY_RIGHT ) && ( keyCode != (char) KEY_DOWN ) ) {
      // TextBox.cancelKey() suppresses the current keyboard event.
      ( (TextBox) sender ).cancelKey();
    }
  }
}