| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cocoon.woody.event.impl; |
| |
| import org.apache.cocoon.woody.event.ActionListener; |
| import org.apache.cocoon.woody.event.ValueChangedListener; |
| import org.apache.cocoon.woody.event.WidgetListener; |
| import org.apache.cocoon.woody.event.WidgetListenerBuilder; |
| import org.apache.cocoon.woody.util.JavaScriptHelper; |
| import org.mozilla.javascript.Script; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Builds a {@link WidgetListener} based on a JavaScript snippet. |
| * <p> |
| * The syntax for this listener is as follows : |
| * <pre> |
| * <javascript> |
| * var widget = event.sourceWidget; |
| * sourceWidget.setValue("Yeah"); |
| * </javascript> |
| * </pre> |
| * As shown above, the event that fired this listener is published as the <code>event</code> |
| * variable. |
| * |
| * @author <a href="http://www.apache.org/~sylvain/">Sylvain Wallez</a> |
| * @version CVS $Id: JavaScriptWidgetListenerBuilder.java,v 1.6 2004/03/05 13:02:31 bdelacretaz Exp $ |
| */ |
| public class JavaScriptWidgetListenerBuilder implements WidgetListenerBuilder { |
| |
| public static final JavaScriptWidgetListenerBuilder INSTANCE = new JavaScriptWidgetListenerBuilder(); |
| |
| public WidgetListener buildListener(Element element, Class listenerClass) throws Exception { |
| |
| Script script = JavaScriptHelper.buildScript(element); |
| |
| if (listenerClass == ActionListener.class) { |
| return new JavaScriptWidgetListener.JSActionListener(script); |
| } else if (listenerClass == ValueChangedListener.class) { |
| return new JavaScriptWidgetListener.JSValueChangedListener(script); |
| } else { |
| throw new Exception("Unkonwn event class: " + listenerClass); |
| } |
| } |
| } |