001/*
002 * This library is part of OpenCms -
003 * the Open Source Content Management System
004 *
005 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * For further information about Alkacon Software, please see the
018 * company website: http://www.alkacon.com
019 *
020 * For further information about OpenCms, please see the
021 * project website: http://www.opencms.org
022 *
023 * You should have received a copy of the GNU Lesser General Public
024 * License along with this library; if not, write to the Free Software
025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
026 */
027
028package org.opencms.ade.contenteditor.widgetregistry.client;
029
030import com.google.gwt.event.dom.client.FocusEvent;
031import com.google.gwt.event.dom.client.FocusHandler;
032import com.google.gwt.event.logical.shared.ValueChangeEvent;
033import com.google.gwt.event.logical.shared.ValueChangeHandler;
034
035/**
036 * Handler to delegate events to a native java script connector.<p>
037 */
038public class NativeEventHandler implements ValueChangeHandler<String>, FocusHandler {
039
040    /** The native connector. */
041    NativeEditWidget m_connector;
042
043    /**
044     * Constructor.<p>
045     *
046     * @param connector the native connector object that needs to provide an onChange method
047     */
048    public NativeEventHandler(NativeEditWidget connector) {
049
050        m_connector = connector;
051    }
052
053    /**
054     * @see com.google.gwt.event.logical.shared.ValueChangeHandler#onValueChange(com.google.gwt.event.logical.shared.ValueChangeEvent)
055     */
056    public native void onValueChange(ValueChangeEvent<String> event) /*-{
057                                                                     var connector = this.@org.opencms.ade.contenteditor.widgetregistry.client.NativeEventHandler::m_connector;
058                                                                     if (connector.onChange != null) {
059                                                                     connector.onChange();
060                                                                     }
061                                                                     }-*/;
062
063    /**
064     * @see com.google.gwt.event.dom.client.FocusHandler#onFocus(com.google.gwt.event.dom.client.FocusEvent)
065     */
066    public native void onFocus(FocusEvent event) /*-{
067
068                                                 var connector = this.@org.opencms.ade.contenteditor.widgetregistry.client.NativeEventHandler::m_connector;
069                                                 if (connector.onFocus != null) {
070                                                 connector.onFocus();
071                                                 }
072                                                 }-*/;
073}