| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.forms.event.impl; |
| |
| import org.apache.avalon.framework.context.Context; |
| import org.apache.avalon.framework.context.ContextException; |
| import org.apache.avalon.framework.context.Contextualizable; |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| import org.apache.cocoon.forms.event.ActionListener; |
| import org.apache.cocoon.forms.event.CreateListener; |
| import org.apache.cocoon.forms.event.ProcessingPhaseListener; |
| import org.apache.cocoon.forms.event.RepeaterListener; |
| import org.apache.cocoon.forms.event.ValueChangedListener; |
| import org.apache.cocoon.forms.event.WidgetListener; |
| import org.apache.cocoon.forms.event.WidgetListenerBuilder; |
| import org.apache.cocoon.forms.formmodel.tree.TreeSelectionListener; |
| import org.apache.cocoon.forms.util.JavaScriptHelper; |
| import org.mozilla.javascript.Function; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Builds a {@link WidgetListener} based on a JavaScript snippet. |
| * <p> |
| * The syntax for this listener is as follows : |
| * <pre> |
| * <fd:javascript> |
| * var widget = event.sourceWidget; |
| * sourceWidget.setValue("Yeah"); |
| * </fd:javascript> |
| * </pre> |
| * As shown above, the event that fired this listener is published as the <code>event</code> |
| * variable. |
| * |
| * @version $Id$ |
| */ |
| public class JavaScriptWidgetListenerBuilder implements WidgetListenerBuilder, ThreadSafe, Contextualizable { |
| |
| private Context context; |
| |
| public void contextualize(Context context) throws ContextException { |
| this.context = context; |
| } |
| |
| public WidgetListener buildListener(Element element, Class listenerClass) throws Exception { |
| |
| Function func = JavaScriptHelper.buildFunction(element, "handleEvent", new String[]{"widget", "event"}); |
| |
| if (listenerClass == ActionListener.class) { |
| return new JavaScriptWidgetListener.JSActionListener(func, context); |
| } else if (listenerClass == CreateListener.class) { |
| return new JavaScriptWidgetListener.JSCreateListener(func, context); |
| } else if (listenerClass == ValueChangedListener.class) { |
| return new JavaScriptWidgetListener.JSValueChangedListener(func, context); |
| } else if (listenerClass == TreeSelectionListener.class) { |
| return new JavaScriptWidgetListener.JSTreeSelectionListener(func, context); |
| } else if (listenerClass == ProcessingPhaseListener.class) { |
| return new JavaScriptWidgetListener.JSProcessingPhaseListener(func, context); |
| } else if (listenerClass == RepeaterListener.class) { |
| return new JavaScriptWidgetListener.JSRepeaterListener(func, context); |
| } else { |
| throw new Exception("Unkonwn event class: " + listenerClass); |
| } |
| } |
| } |