GPComboBox.java

/**
 *
 *    geo-platform
 *    Rich webgis framework
 *    http://geo-platform.org
 *   ====================================================================
 *
 *   Copyright (C) 2008-2017 geoSDI Group (CNR IMAA - Potenza - ITALY).
 *
 *   This program is free software: you can redistribute it and/or modify it
 *   under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version. 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 General Public License
 *   for more details. You should have received a copy of the GNU General
 *   Public License along with this program. If not, see http://www.gnu.org/licenses/
 *
 *   ====================================================================
 *
 *   Linking this library statically or dynamically with other modules is
 *   making a combined work based on this library. Thus, the terms and
 *   conditions of the GNU General Public License cover the whole combination.
 *
 *   As a special exception, the copyright holders of this library give you permission
 *   to link this library with independent modules to produce an executable, regardless
 *   of the license terms of these independent modules, and to copy and distribute
 *   the resulting executable under terms of your choice, provided that you also meet,
 *   for each linked independent module, the terms and conditions of the license of
 *   that module. An independent module is a module which is not derived from or
 *   based on this library. If you modify this library, you may extend this exception
 *   to your version of the library, but you are not obligated to do so. If you do not
 *   wish to do so, delete this exception statement from your version.
 */
package org.geosdi.geoplatform.gui.client.widget.search.routing;

import org.geosdi.geoplatform.gui.model.GeoPlatformBeanModel;
import org.geosdi.geoplatform.gui.puregwt.routing.RoutingHandlerManager;
import org.geosdi.geoplatform.gui.puregwt.routing.event.CleanComboEvent;

import com.extjs.gxt.ui.client.event.FieldEvent;
import com.extjs.gxt.ui.client.widget.form.ComboBox;
import com.google.gwt.event.dom.client.KeyCodes;

/**
 * @author Giuseppe La Scaleia - CNR IMAA geoSDI Group
 * @email giuseppe.lascaleia@geosdi.org
 * 
 */
public class GPComboBox<T extends GeoPlatformBeanModel> extends ComboBox<T> {

    /**
     * This Method must be override to prevente any errors on Widget
     *
     * Clear Component Status for Widget :
     * <ul>
     * <li>Clear Store</li>
     * <li>Collapse ComboBox</li>
     * <li>Remove Marker on the Map</li>
     * </ul>
     *
     */
    @Override
    protected void onKeyUp(FieldEvent fe) {
        if (((fe.getKeyCode() == KeyCodes.KEY_BACKSPACE)
                || (fe.getKeyCode() == KeyCodes.KEY_DELETE))
                && (getRawValue().equals(""))) {
            RoutingHandlerManager.fireEventFromSource(new CleanComboEvent(),
                    this);
        }
    }
}